From: Bartlomiej Sieka Date: Fri, 24 Feb 2006 08:37:22 +0000 (+0100) Subject: Merge with /home/wd/git/u-boot/testing-NAND/ to add new NAND handling. X-Git-Tag: LABEL_2006_03_12_0025~27^2 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=038ccac511214b062c56f22b9413f784b86bcd87;p=u-boot Merge with /home/wd/git/u-boot/testing-NAND/ to add new NAND handling. --- 038ccac511214b062c56f22b9413f784b86bcd87 diff --cc CHANGELOG index 5a84431c4e,07ed5247e8..5d32bcec48 --- a/CHANGELOG +++ b/CHANGELOG @@@ -1,602 -1,10 +1,607 @@@ ====================================================================== -Changes for U-Boot 1.1.4: +Changes since U-Boot 1.1.4: ====================================================================== -* Rewrite of NAND code based on what is in 2.6.12 Linux kernel ++* Merge the new NAND code (testing-NAND brach) ++ ++ Rewrite of NAND code based on what is in 2.6.12 Linux kernel + Patch by Ladislav Michl, 29 Jun 2005 + +* Update default environment for INKA4x00 board. + +* Cleanup U-Boot boot messages on ARM. + + To match the U-Boot user interface on ARM platforms to the U-Boot + standard (as on PPC platforms), some messages with debug character + are removed from the default U-Boot build. + Enable DEBUG for lib_arm/board.c to enable debug messages. + New CONFIG_DISPLAY_CPUINFO and CONFIG_DISPLAY_BOARDINFO options. + Patch by Stefan Roese, 24 Jan 2006 + +* Fix various compiler warnings on ppc4xx builds (ELDK 4.0) + Patch by Stefan Roese, 18 Jan 2006 + +* Add VGA support (CT69000) to CPCI750 board. + Insert missing __le32_to_cpu() for filesize in ext2fs_read_file(). + Patch by Reinhard Arlt, 30 Dec 2005 + +* PMC405 and CPCI405: Moved configuration of pci resources + into config file. + PMC405 and CPCI2DP: Added firmware download and booting via pci. + Patch by Matthias Fuchs, 20 Dec 2005 + +* Fix 28F256J3A support on PM520 board + (without bank-switching only 32 MB can be accessed) + +* Fix mkimage bug with multifile images created on 64 bit systems. + +* Add support for 28F256J3A flash (=> 64 MB) on PM520 board + +* Fix compiler problem with at91rm9200dk board. + Patch by Eugen Bigz, 19 Dec 2005 + +====================================================================== +Changes for U-Boot 1.1.4: +====================================================================== + +* Changes to Yellowstone & Yosemite 440EP/GR eval boards: + - Changed GPIO setup to enable another address line in order to + address 64M of FLASH. + - Added function sdram_tr1_set to auto calculate the tr1 value for + the DDR. + Patch by Steven Blakeslee, 12 Dec 2005 + +* MPC5200: Set PCI retry counter to 0 = infinite retry; + The default of 255 is too short for slow devices. + Patch by Martin Nykodym, 12 Dec 2005 + +* Change port configuration for O2DNT (CODEC1 on PSC1). + +* Fix register for PCI async mode on PPC440EP + Patch by Youngchul Bang, 08 Dec 2005 + +* Fix U-Boot linking problems (add .eh_frame segment to linker script) + This segment may be required by some libgcc.a functions + (like _udivdi3). + +* Fix DPRAM offset/size for MPC8541/8555. + Simplify TQM85xx Makefile handling. + +* Fix data overflow (typo?) in rtc/ds1302.c + +* Fix U-Boot compilation for MIPS boards using ELDK 4.0 + +* Add support for TQM8541/8555 boards, TQM85xx support reworked: + - Support for TQM8541/8555 boards added. + - Complete rework of TQM8540/8560 support. + - Common TQM85xx code now supports all current TQM85xx platforms + (TQM8540/8541/8555/8560). + - DDR SDRAM size detection added. + - CAS latency default values can be overwritten by setting "serial#" + to e.g. "ABC0001 casl=25" -> CAS latency 2.5 will be used. + If problems are detected with this non default CAS latency, + the default values will be used instead. + - Flash size detection added. + - Moved FCC ethernet driver initialization behind TSEC driver init + -> TSEC is first device. + Patch by Stefan Roese, 30 Nov 2005 + +* Add support for AMCC 440SP, add support for AMCC Luan 440SP eval board. + Patch by John Otken, 23 Nov 2005 + +* Changed PPC44x startup message (cpu info, speed...) to common style: + On PPC44x platforms, the startup message generated in "cpu.c" only + comprised the ppc type and revision but not additional information + like speed etc. Those speed infos where printed in the board specific + code. This new implementation now prints all CPU infos in the common + cpu specific code. No board specific code is needed anymore and + therefore removed from all current 44x implementations. + Patch by Stefan Roese, 27 Nov 2005 + +* Adjust TQM834x PHY addresses for latest hardware revision. + +* Increase malloc arena on TQM5200 board to 256 kB. + With 64 kb uniform flash sector size the old value of 128 kB was + too small. + +* Fix miiphy global data initialization (problem on 4xx boards when + no ethaddr is assigned). Initialization moved from + miiphy_register() to eth_initialize(). + + Based on initial patch for 4xx platform by Matthias Fuchs. + +* Remove unnnecessary #include from include/asm-*/u-boot.h + +* Allow use of include/image.h and include/asm-*/u-boot.h in proprietary code. + The COPYING file was extended to make clear that these files can be + used in non-GPL code, too. + Also, a corresponding note was placed in the headers of the affected files. + +* Add support for Prodrive P3P440 board: + - Added onboard PPC440 DDR autodetection in cpu/ppc/sdram.c + - CFG_FLASH_QUIET_TEST added to use the common CFI driver + for bank autodetection + Patch by Stefan Roese, 22 Nov 2005 + +* Change all '$(...)' variable references into '${...}' + which makes the environment compatible with the hush shell. + WARNING: Support for the old '$(...)' syntax will be + discontinued in a later version. + +* Minor changes to init flags in TQM834x PCI. + +* Fix Bamboo DDR SDRAM initialization (problem with onboard SDRAM) + Patch by Stefan Roese, 15 Nov 2005 + +* New PPC 405EP board added: CMS700 + Added CONFIG_NET_MULTI for VOM405 board. + Added reset_phy() for VOM405 board. + Patch by Matthias Fuchs, 09 Nov 2005 + +* Updated PCI mapping for esd CPCI2DP board. + Add support for error LED. + Patch by Matthias Fuchs, 07 Nov 2005 + +* Fix MPC85xx PCI support (pci_register_hose() before pci config access) + Patch by Stefan Roese, 07 Nov 2005 + +* Correct PPC Timebase register definitions (SPRN_TBRL...) + Patch by Stefan Roese, 07 Nov 2005 + +* Adjust bd->bi_flashstart on Yellowstone & Yosemite to correct size + Patch by Stefan Roese, 05 Nov 2005 + +* Additional fix for external IRQ config on Yellowstone & Yosemite + Patch by Stefan Roese, 03 Nov 2005 + +* Add support for Ocotea pass 3 with 440GX Rev. F + Patch by Stefan Roese, 01 Nov 2005 + +* Fix external IRQ configuration on Yellowstone & Yosemite + Patch by Stefan Roese, 28 Oct 2005 + +* Add support for multiple PHYs. + Tested on the following boards: + cmcpu2 (at91rm9200/ether.c) + PPChameleon (ppc4xx/4xx_enet.c) + yukon (mpc8220/fec.c) + uc100 (mpc8xx/fec.c) + tqm834x (mpc834x/tsec.c) with EEPRO100 + lite5200 (mpc5xxx/fec.c) with EEPRO100 card (drivers/eepro100.c) + Main changes include: + common/miiphyutil.c + - miiphy_register routine was added to allow multiple PHYs to be registered + - miiphy_read and miiphy_write are now defined in this file, and + require additional argument (char *devname) + - other miiphy_* routines also require additional device name argument + ../lib_i386/board.c + ../lib_ppc/board.c + Calling reset_phy() was moved to be executed *after* eth_initialize(). + This is necessary as now some of the implementations of reset_phy() + may need to use miiphy_reset() which is not allowed before eth_initialize() + as eth_initialize registers all required miiphy_* routines. + Tested on IP860 and PHY initializes properly after this change. + +* Correct includes for flat tree builder. + +* Fix conflicting types (flash_write()) in trab auto_update.c. + +* Add PCI support for the TQM834x board. + +* Add missing 4xx board to MAKEALL + Patch by Stefan Roese, 20 Oct 2005 + +* Fix conflicting types (flash_write()) in esd auto_update.c + Patch by Stefan Roese, 20 Oct 2005 + +* Fix problem with sleep in NetConsole (use get_timer()) + Patch by Stefan Roese, 20 Oct 2005 + +* Add NetConsole Support for AMCC eval boards + Patch by Stefan Roese, 20 Oct 2005 + +* Fix NetConsole support on 4xx (only print eth link on 1st transfer) + Patch by Stefan Roese, 18 Oct 2005 + +* Add fat & ext2 support to AMCC 440EP boards Yosemite & Bamboo. + Fix identation on ext2ls help entry. + Patch by Stefan Roese, 14 Oct 2005 + +* Add support for TQM834x boards. + Cleanup. + +* Cleanup for GCC-4.x + +* Add documentation for Open Firmware Flat Tree and usage. + Patch by Pantelis Antoniou, 13 Oct 2005 + +* Add missing files for Pantelis Antoniou's patch + Patch by Pantelis Antoniou, 04 Sep 2005 + +* Fix problem in ppc4xx eth-driver without ethaddr (only without + CONFIG_NET_MULTI set) + Patch by Stefan Roese, 10 Oct 2005 + +* Fix gzip bmp support (test if malloc fails, warning when truncated). + Increase CFG_VIDEO_LOGO_MAX_SIZE on HH405 board. + Patch by Stefan Roese, 07 Oct 2005 + +* Add support for OF flat tree for the STXtc board. + Patch by Pantelis Antoniou, 04 Sep 2005 + +* Support passing of OF flat trees to the kernel. + Patch by Pantelis Antoniou, 04 Sep 2005 + +* Cleanup + +* Add support for NetSilicon NS7520 processor. + Patch by Art Shipkowski, 12 May 2005 + +* Add support for AP1000 board. + Patch by James MacAulay, 07 Oct 2005 + +* Eliminate hard-coded address of Ethernet transfer buffer on at91rm9200 + Patch by Anders Larsen, 07 Oct 2005 + + The Atmel errata #11 states that the transfer buffer descriptor + table must be aligned on a 16-word boundary. As it turned out, this + is insufficient - it seems the table must be aligned on a boundary + at least as large as the table itself (in Linux this is not an + issue - the table is aligned on a PAGE_SIZE (4096) boundary). + +* Fixed compilation for ARM when using a (standard) hard-FP toolchain + Patch by Anders Larsen, 07 Oct 2005 + +* Cleanup warnings for cpu/arm720t & cpu/arm1136 files. + sed the linker scripts, rather than pre-process them. + Patch by Peter Pearse, 07 Oct 2005 + +* Update make target for ARM supported boards. + Use lowlevel_init() instead of platformsetup() [rename]. + Patch by Peter Pearse, 06 Oct 2005 + +* Fix booting from serial dataflash on AT91RM9200 + Patch by Peter Menzebach, 29 Aug 2005 + +* Add JFFS2 support for TRAB board + Patch by Martin Krause, 25 Aug 2005 + +* Remove unnecessary dependency of netconsole on CONFIG_NET_MULTI + Patch by Marcus Hall, 24 Aug 2005 + +* Fix the machine-id of the Cogent csb637 board + Patch by Anders Larsen, 05 Oct 2005 + +* Complete support for the KwikByte KB920x boards + Patch by Anders Larsen, 05 Oct 2005 + +* Set the AT91RM9200 clock to asynchronous mode + Patch by Anders Larsen, 03 May 2005 + +* Set the AT91RM9200 clock to synchronous mode + Patch by Anders Larsen, 29 Apr 2005 + +* Add support for Cogent csb637 + Patch by Anders Larsen, 29 Apr 2005 + +* Fix dm9161.c initialization + Patch by Anders Larsen, 29 Apr 2005 + +* Fix problems introduced by Patch by Steven Scholz, 02 Mar 2005 + (8e2be51de8dd03c1ce4d06cbb18ad06133d47cd5) + +* Move dm9161.c and lxt972.c into cpu/arm920t/at91rm9200 + Patch by Anders Larsen, 29 Apr 2005 + +* Fix device partition intialization for SystemACE disks. + Patch by Stephen Williams, 28 Apr 2005 + +* Added support for KwikByte KB920x boards (based on AT91RM9200) + Patch by Matt ?? , 27 Apr 2005 + +* Add support for S29GL064M-R3 flash chip on xsengine board + Patch by Kurt Stremerch, 18 Apr 2005 + +* E500 update: repoint IVPR to RAM when code is relocated + Patch by Kylo Ginsberg, 13 Apr 2005 + +* Fix loop end test in lib_generic/string.c:strswab() + Patch by Andrew Dyer, October 10, 2005 + Signed-off-by: Andrew Dyer + +* Cleanup + +* Update ARM Integrator boards: + Correct addessing errors in platform files. + Split off common core module data from Integrator header files to + include/armcoremodule.h. + Patch by Peter Pearse, 04 Oct 2005 + +* Make sure only supported compiler options are used + Import "cc-option" shell function from kernel and + use it to get the correct ARM GCC options for individual CPUs + Patch by Peter Pearse, 30 Jun 2005 + +* Fix 440GR to print correct cpu revision + Patch by Stefan Roese, 04 Oct 2005 + +* Change board message on AMCC Yosemite & Yellowstone to common style + Patch by Stefan Roese, 03 Oct 2005 + +* Fix compiler warning + +* Fix FEC PHY addresses for TQM85xx boards + +* Fix uninitialized variable problem in hush shell + Patch by Lars Rostock, 26 Sep 2005 + +* Undo change of f6e20fc6ca... to include/configs/trab.h + (Must have been an accident?) + +* Add support for AT91RM9200 OHCI Controller. + Patch by Eric Benard, 07 Apr 2005 + +* Update ARM mach-types.h + Patch by Eric Benard, 07 Apr 2005 + +* Add support for MP2USB board. + Patch by Eric Benard, 07 Apr 2005 + +* Add board support for armadillo HT1070 + Patch by Rowel Atienza, 06 Apr 2005 + +* Second Ethernet address enabled for MPC885ADS and MPC8272ADS. + Patch by Vitaly Bordug, 30 Mar 2005 + +* Add iopset command on mpc8xx + Patch by Daniel Eisenhut, 25 Mar 2005 + +* Add support for MII in eepro100 driver. + Patch by Gleb Natapov, 21 Mar 2005 + +* Fixes to the Lubbock (PXA 25x) support: + - Resolve the FIXME with respect to saving the u-boot environment. + - Make the default load address land in real memory. + - Fix lan91c96 SMC_{in,out}{b,w,l}() macros + Patch by David Brownell, 10 Mar 2005 + +* Add Barco Streaming Video Card (SVC) and Sample Compress Network (SCN) board + Patch by Marc Leeman, 04 Mar 2005 + +* OMAP242x H4 board update + - fix for ES2 differences. + - switch to using the cfi_flash driver. + - fix SRAM build address. + - fix for GP device operation. + - unlock SRAM for GP devices. + - display more device information. + - fix potential deadlock in omap24xx_i2c driver. + - fix DLL load values to match dpllout*1 operation. + - fix 2nd chip select init for combo DDR device. + - add support for CFI Intel 28F256L18 on H4 board. + Patch by Richard Woodruff, 03 Mar 2005 + +* Fix formating in include/asm-arm/arch-at91rm9200/AT91RM9200.h + Patch by Steven Scholz, 02 Mar 2005 + +* Fix typo in eth.c + Patch by Ara Avanesyan, 24 Feb 2005 + +* Remove unneeded #include + Patch by Ladislav Michl, 22 Feb 2005 + +* Add cramfs support for m68k + Patch by Zachary Landau, 21 Feb 2005 + +* Update ep8260: Fix flash timeouts; improve clock resolution for faster UARTs + Patch by Jeff Angielski, 21 Feb 2005 + +* Fix au1x00_serial baud rate calculation: + remove hardcoded cpu clock divisor and use register instead; + round up instead of truncate + Patch by Andrew Dyer, 15 Feb 2005 + +* Add Xilinx Spartan3 family FPGA support + Patch by Kurt Stremerch, 14 Feb 2005 + +* Fix drivers/cfi_flash.c: use info->reset_cmd instead of FLASH_CMD_RESET + Patch by Zachary Landau, 11 Feb 2005 + +* Fix VOH405 Support + Patch by Matthias Fuchs, 25 Sep 2005 + +* Added support for PCI bridge on MPC8272ADS + Patch by Vitaly Bordug, Feb 09 2005 + +* Update multicore CM9XX support for Integrator AP to allow booting from flash + Patch by Jean-Paul Saman, 8 Feb 2005 + +* Fix strswab() to reliably find end of string + Patch by Andrew Dyer, 08 Feb 2005 + +* Fix typos in include/ppc440.h + Patch by Andrew E Mileski, 04 Feb 2005 + +* Add Vibren (was Accelent) PXA255 IDP Support + Patch by Cliff Brake, 04 Feb 2005 + +* Fix tools/bmp_logo.c using incorrect offset to pixel data + Patch by Andrew Dyer, 31 Jan 2005 + +* Add ARM946E cpu and core module targets; remap memory to 0x00000000 + Patch by Peter Pearse, 2 Feb 2005 + +* Fix error handling in tools/env/fw_env.c + Patch by Ara Avanesyan, 01 Feb 2005 + +* Fix MGT5100 PSC baudrate calculation + Patch by Sebastian Schau, 27 Jan 2005 + +* OMAP242x fix for GP device booting + - Add SRAM unlock for GP devices. + - Change DDR DLL unlock value to allow DPLLout*1 operation. + Patches by Richard Woodruff, 21 Jan 2005: + +* Add support for AMD's Pb1x00 eval board; + add MII routines to the au1x00 ethernet driver; + add USB ohci driver (work in progress) + Patch by Thomas Sailer, 20 Jan 2005 + +* Update omap5912osk board + Use drivers/cfi_flash.c instead of private flash driver; + Remove hardcoded personalized settings from omap5912osk.h; + Fix spacing with (RO) marks in 'flinfo' output. + Patch by Michael Bendzick, 14 Jan 2005 + +* Fix warnings for PCI code on ixp + Patch by Joe , 13 Jan 2005 + +* virtex2 fix for bogus download error messages + The virtex2 FPGA download code watches for init going active during + a download of config data as an error condition. init also goes + active after a configuration is finished in concert with the done + signal. So far, the code does not check for done active until all + of the configuration data is sent. If configuration data has a few + extra pad bytes at the end, this would cause an error message even + though the download had suceeded. + NOTE: virtex2 slave serial and spartan2 versions may still have the + same problem. + Patch by Andrew Dyer, 12 Jan 2005 + +* Optimize flash_make_cmd in drivers/cfi_flash.c for little endian + Fix "WARNING: flash_make_cmd: unsuppported LittleEndian mode" + message when probing for nonexistent flash in little endian mode. + As a side effect more efficient and smaller code is generated, + which is always a Good Thing (TM). + Patch by Ladislav Michl, 24 Sep 2005 + +* Update for TFTP using a fixed UDP port + Use the approved environment variable names. Added "tftpdstp" to + allow ports other than 69 per Tolunay Orkun's recommendation. + Patch by Jerry Van Baren, 12 Jan 2005 + +* Allow to force TFTP to use a fixed UDP port + (Add a configuration option CONFIG_TFTP_PORT and optional env + variable tftpport) + Patch by Jerry Van Baren, 10 Jan 2005 + +* Fix ethernet timeouts on dbau1550 and other au1x00 systems + Patch by Leif Lindholm, 29 Dec 2004 + +* Cleanup: fix broken builds + +* Fix PHY address argument passing with mii info command + Patch by Andrew Dyer, 28 Dec 2004 + +* Cleanup (PPC4xx is AMCC now) + +* esd CPCI2DP board added + Patch by Matthias Fuchs, 22 Sep 2005 + +* esd PMC405 board updated + Patch by Matthias Fuchs, 22 Sep 2005 + +* Add SM501 support to HH405 board. + Add support for gzip compressed bmp's (CONFIG_VIDEO_BMP_GZIP). + Add support for eeprom write-enable (CFG_EEPROM_WREN). + Patch by Stefan Roese, 22 Sep 2005 + +* Fix autonegotiation in tsec ethernet driver + Patch by Stefan Roese, 21 Sep 2005 + +* Fix bug in auto_update (trab board) + Patch by Martin Krause, 16 Sep 2005 + +* Fix computation of framebuffer palette for 8bpp LCD bitmaps + Patch by Francesco Mandracci, 16 Sep 2005 + +* Update configuration for INKA4x0 board + +* Update configuration for PM854 board + Based on patch by R. Loeffl, 20 Jul 2005 + +* Add PCI support to TQM8540 and TQM8560 boards + Patch by Stefan Roese, 15 Sep 2005 + +* Update AMCC Yosemite to get a consistent setup for all AMCC eval + boards (baudrate, environment...). Flash driver fixed. + Patch by Stefan Roese, 15 Sep 2005 + +* Fix problem in 440GP ethernet driver (ebony). Add support for 2nd + ethernet port on ebony. + Patch by Stefan Roese, 7 Sep 2005 + +* Added support for mtddevnum and mtddevname variables (mtdparts command) + +* Change default console baud rate for stxxtc board + +* Add I2C support to TQM8540 and TQM8560 boards (EEPROM, RTC, LM75-DTT). + Patch by Stefan Roese, 31 Aug 2005 + +* Fix default command set (don't include CFG_CMD_DISPLAY command) + Patch by Pantelis Antoniou, 02 Sep 2005 + +* Cleanup + +* Enable SM712 driver support for HMI1001 board. + +* Fix problems with ld version 2.16 (dot outside sections problem) + Pointed out by Gerhard Jaeger, 31 Aug 2005; + cf. http://sourceware.org/ml/binutils/2005-08/msg00412.html + +* Prepare U-Boot for gcc-4.x: fix global data pointer initialization + +* Adjust CS3 timings on HMI1001 board for dot matrix display under Linux + +* Add keyboard and dot matrix display support for HMI1001 board. + +* Prepare U-Boot for gcc-4.x + +* Fixed Bamboo port to enable running without DDR-DIMM + (Bamboo has also 64MB onboard DDR) + Patch by Stefan Roese, 24 Aug 2005 + +* Merged 405gp_enet.c and 440gx_enet.c to generic 4xx_enet.c + now handling all 4xx cpu's + Patch by Stefan Roese, 16 Aug 2005 + +* Fix make dependencies for at91rm9200 and ks8695 cpus + Patch by Steven Scholz, 23 Aug 2005 + +* Add JFFS2 support for TQM5200 board + +* Add esd cpci5200 and pf5200 boards + Patch by Reinhard Arlt, 22 Aug 2005 + +* Fix sysclock for TQM8540 and TQM8560 boards + Patch by Martin Krause, 25 Jul 2005 + +* Initialize serial# and ethaddr from manufacturer data in EEPROM on CMC-PU2 + Patch by Martin Krause, 08 Jun 2005 + +* Add new board specific commands for TQM5200/STK52XX + - Sound commands (beep, wav, sound) + - Test commands (led, can, backlight, rs232) + Patch by Martin Krause, 02 May 2005 + +* Change main clock on CMC-PU2 board from 207 MHz to 179 MHz + because of a bug in the AT91RM9200 CPU PLL + Patch by Martin Krause, 22 Apr 2005 + +* Add automatic HW detection for another CMC_PU2 variant + Patch by Martin Krause, 20 Apr 2005 + +* Remove CONFIG_AT91RM9200DK in CMC-PU2 configuration + Patch by Martin Krause, 19 Apr 2005 + +* Fix initialization problem on TQM5200 without SM501 + Patch by Martin Krause, 08 Apr 2005 + +* Add RTC support for STK52XX.200 + Patch by Martin Krause, 07 Apr 2005 + +* Add support for IFM o2dnt board + * Enable PCI on hmi1001 board * Fix return values of the jffs2 commands ls/fsload/fsinfo, diff --cc Makefile index 9305cab38b,c15efd9c8a..5e0df98c98 --- a/Makefile +++ b/Makefile @@@ -121,6 -121,7 +121,7 @@@ LIBS += drivers/libdrivers. LIBS += drivers/sk98lin/libsk98lin.a LIBS += post/libpost.a post/cpu/libcpu.a LIBS += common/libcommon.a ++LIBS += $(BOARDLIBS) .PHONY : $(LIBS) # Add GCC lib diff --cc board/dave/PPChameleonEVB/Makefile index 39d2feceb4,39d2feceb4..581a5802b4 --- a/board/dave/PPChameleonEVB/Makefile +++ b/board/dave/PPChameleonEVB/Makefile @@@ -25,7 -25,7 +25,7 @@@ include $(TOPDIR)/config.m LIB = lib$(BOARD).a --OBJS = $(BOARD).o flash.o ++OBJS = $(BOARD).o flash.o nand.o $(LIB): $(OBJS) $(SOBJS) $(AR) crv $@ $^ diff --cc board/dave/PPChameleonEVB/PPChameleonEVB.c index 5f2c705f12,1f6512d0ea..52055b85b3 --- a/board/dave/PPChameleonEVB/PPChameleonEVB.c +++ b/board/dave/PPChameleonEVB/PPChameleonEVB.c @@@ -238,33 -238,33 +238,6 @@@ int testdram (void /* ------------------------------------------------------------------------- */ --#if (CONFIG_COMMANDS & CFG_CMD_NAND) --extern ulong --nand_probe(ulong physadr); -- --void --nand_init(void) --{ -- ulong totlen = 0; -- --/* -- The HI model is equipped with a large block NAND chip not supported yet -- by U-Boot -- (CONFIG_PPCHAMELEON_MODULE_MODEL == CONFIG_PPCHAMELEON_MODULE_HI) --*/ -- --#if (CONFIG_PPCHAMELEON_MODULE_MODEL == CONFIG_PPCHAMELEON_MODULE_ME) -- debug ("Probing at 0x%.8x\n", CFG_NAND0_BASE); -- totlen += nand_probe (CFG_NAND0_BASE); --#endif /* CONFIG_PPCHAMELEON_MODULE_ME, CONFIG_PPCHAMELEON_MODULE_HI */ -- -- debug ("Probing at 0x%.8x\n", CFG_NAND1_BASE); -- totlen += nand_probe (CFG_NAND1_BASE); -- -- printf ("%3lu MB\n", totlen >>20); --} --#endif -- #ifdef CONFIG_CFB_CONSOLE # ifdef CONFIG_CONSOLE_EXTRA_INFO # include diff --cc board/dave/PPChameleonEVB/config.mk index 5856aec0ce,5856aec0ce..6e03b72b66 --- a/board/dave/PPChameleonEVB/config.mk +++ b/board/dave/PPChameleonEVB/config.mk @@@ -1,5 -1,5 +1,5 @@@ # --# (C) Copyright 2000 ++# (C) Copyright 2000, 2006 # Wolfgang Denk, DENX Software Engineering, wd@denx.de. # # See file CREDITS for list of people who contributed to this @@@ -22,7 -22,7 +22,10 @@@ # # Reserve 256 kB for Monitor --TEXT_BASE = 0xFFFC0000 ++#TEXT_BASE = 0xFFFC0000 # Reserve 320 kB for Monitor --#TEXT_BASE = 0xFFFB0000 ++TEXT_BASE = 0xFFFB0000 ++ ++# Compile the new NAND code (needed iff #ifdef CONFIG_NEW_NAND_CODE) ++BOARDLIBS = drivers/nand/libnand.a diff --cc board/dave/PPChameleonEVB/nand.c index 0000000000,0000000000..16c67cd972 new file mode 100644 --- /dev/null +++ b/board/dave/PPChameleonEVB/nand.c @@@ -1,0 -1,0 +1,147 @@@ ++/* ++ * (C) Copyright 2006 DENX Software Engineering ++ * ++ * See file CREDITS for list of people who contributed to this ++ * project. ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License as ++ * published by the Free Software Foundation; either version 2 of ++ * the License, or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, ++ * MA 02111-1307 USA ++ */ ++ ++#include ++ ++#if (CONFIG_COMMANDS & CFG_CMD_NAND) ++#ifdef CONFIG_NEW_NAND_CODE ++/* new NAND handling */ ++ ++#include ++ ++/* ++ * hardware specific access to control-lines ++ * function borrowed from Linux 2.6 (drivers/mtd/nand/ppchameleonevb.c) ++ */ ++static void ppchameleonevb_hwcontrol(struct mtd_info *mtdinfo, int cmd) ++{ ++ struct nand_chip *this = mtdinfo->priv; ++ ulong base = (ulong) this->IO_ADDR_W; ++ ++ switch(cmd) { ++ case NAND_CTL_SETCLE: ++ MACRO_NAND_CTL_SETCLE((unsigned long)base); ++ break; ++ case NAND_CTL_CLRCLE: ++ MACRO_NAND_CTL_CLRCLE((unsigned long)base); ++ break; ++ case NAND_CTL_SETALE: ++ MACRO_NAND_CTL_SETALE((unsigned long)base); ++ break; ++ case NAND_CTL_CLRALE: ++ MACRO_NAND_CTL_CLRALE((unsigned long)base); ++ break; ++ case NAND_CTL_SETNCE: ++ MACRO_NAND_ENABLE_CE((unsigned long)base); ++ break; ++ case NAND_CTL_CLRNCE: ++ MACRO_NAND_DISABLE_CE((unsigned long)base); ++ break; ++ } ++} ++ ++ ++/* ++ * read device ready pin ++ * function +/- borrowed from Linux 2.6 (drivers/mtd/nand/ppchameleonevb.c) ++ */ ++static int ppchameleonevb_device_ready(struct mtd_info *mtdinfo) ++{ ++ struct nand_chip *this = mtdinfo->priv; ++ ulong rb_gpio_pin; ++ ++ /* use the base addr to find out which chip are we dealing with */ ++ switch((ulong) this->IO_ADDR_W) { ++ case CFG_NAND0_BASE: ++ rb_gpio_pin = CFG_NAND0_RDY; ++ break; ++ case CFG_NAND1_BASE: ++ rb_gpio_pin = CFG_NAND1_RDY; ++ break; ++ default: /* this should never happen */ ++ return 0; ++ break; ++ } ++ ++ if (in32(GPIO0_IR) & rb_gpio_pin) ++ return 1; ++ return 0; ++} ++ ++ ++/* ++ * Board-specific NAND initialization. The following members of the ++ * argument are board-specific (per include/linux/mtd/nand_new.h): ++ * - IO_ADDR_R?: address to read the 8 I/O lines of the flash device ++ * - IO_ADDR_W?: address to write the 8 I/O lines of the flash device ++ * - hwcontrol: hardwarespecific function for accesing control-lines ++ * - dev_ready: hardwarespecific function for accesing device ready/busy line ++ * - enable_hwecc?: function to enable (reset) hardware ecc generator. Must ++ * only be provided if a hardware ECC is available ++ * - eccmode: mode of ecc, see defines ++ * - chip_delay: chip dependent delay for transfering data from array to ++ * read regs (tR) ++ * - options: various chip options. They can partly be set to inform ++ * nand_scan about special functionality. See the defines for further ++ * explanation ++ * Members with a "?" were not set in the merged testing-NAND branch, ++ * so they are not set here either. ++ */ ++void board_nand_init(struct nand_chip *nand) ++{ ++ ++ nand->hwcontrol = ppchameleonevb_hwcontrol; ++ nand->dev_ready = ppchameleonevb_device_ready; ++ nand->eccmode = NAND_ECC_SOFT; ++ nand->chip_delay = NAND_BIG_DELAY_US; ++ nand->options = NAND_SAMSUNG_LP_OPTIONS; ++} ++ ++#else ++ ++/* old NAND handling */ ++extern ulong ++nand_probe(ulong physadr); ++ ++void ++nand_init(void) ++{ ++ ulong totlen = 0; ++ ++/* ++ The HI model is equipped with a large block NAND chip not supported yet ++ by U-Boot ++ (CONFIG_PPCHAMELEON_MODULE_MODEL == CONFIG_PPCHAMELEON_MODULE_HI) ++*/ ++ ++#if (CONFIG_PPCHAMELEON_MODULE_MODEL == CONFIG_PPCHAMELEON_MODULE_ME) ++ debug ("Probing at 0x%.8x\n", CFG_NAND0_BASE); ++ totlen += nand_probe (CFG_NAND0_BASE); ++#endif /* CONFIG_PPCHAMELEON_MODULE_ME, CONFIG_PPCHAMELEON_MODULE_HI */ ++ ++ debug ("Probing at 0x%.8x\n", CFG_NAND1_BASE); ++ totlen += nand_probe (CFG_NAND1_BASE); ++ ++ printf ("%3lu MB\n", totlen >>20); ++} ++#endif ++#endif diff --cc board/netstar/config.mk index 0000000000,8b73e97598..57a34c4957 mode 000000,100644..100644 --- a/board/netstar/config.mk +++ b/board/netstar/config.mk @@@ -1,0 -1,11 +1,15 @@@ + # + # Linux-Kernel is expected to be at 1000'8000, + # entry 1000'8000 (mem base + reserved) + # + # We load ourself to internal RAM at 2001'2000 + # Check map file when changing TEXT_BASE. + # Everything has fit into 192kB internal SRAM! + # + + # XXX TEXT_BASE = 0x20012000 + TEXT_BASE = 0x13FC0000 ++ ++# Compile the new NAND code (needed iff #ifdef CONFIG_NEW_NAND_CODE) ++BOARDLIBS = drivers/nand/libnand.a ++ diff --cc board/netstar/crcek index 0000000000,0000000000..9593f893c8 new file mode 100755 Binary files differ diff --cc board/netstar/crcit index 0000000000,0000000000..98ae42e03b new file mode 100755 Binary files differ diff --cc board/netstar/eeprom index 0000000000,0000000000..c30c98b72c new file mode 100755 Binary files differ diff --cc common/Makefile index 7dbf84a555,9bfc11ab50..7e45a7c716 --- a/common/Makefile +++ b/common/Makefile @@@ -37,19 -37,16 +37,19 @@@ COBJS = main.o ACEX1K.o altera.o bedbug cmd_i2c.o cmd_ide.o cmd_immap.o cmd_itest.o cmd_jffs2.o \ cmd_load.o cmd_log.o \ cmd_mem.o cmd_mii.o cmd_misc.o cmd_mmc.o \ - cmd_nand.o cmd_net.o cmd_nvedit.o \ + cmd_nand.o cmd_nand_new.o cmd_net.o cmd_nvedit.o \ cmd_pci.o cmd_pcmcia.o cmd_portio.o \ - cmd_reginfo.o cmd_reiser.o cmd_scsi.o cmd_spi.o cmd_universe.o cmd_usb.o cmd_vfd.o \ + cmd_reginfo.o cmd_reiser.o cmd_scsi.o cmd_spi.o cmd_universe.o \ + cmd_usb.o cmd_vfd.o \ command.o console.o devices.o dlmalloc.o docecc.o \ environment.o env_common.o \ - env_nand.o env_dataflash.o env_flash.o env_eeprom.o env_nvram.o env_nowhere.o exports.o \ - flash.o fpga.o \ + env_nand.o env_dataflash.o env_flash.o env_eeprom.o \ + env_nvram.o env_nowhere.o \ + exports.o \ + flash.o fpga.o ft_build.o \ hush.o kgdb.o lcd.o lists.o lynxkdi.o \ memsize.o miiphybb.o miiphyutil.o \ - s_record.o serial.o soft_i2c.o soft_spi.o spartan2.o \ + s_record.o serial.o soft_i2c.o soft_spi.o spartan2.o spartan3.o \ usb.o usb_kbd.o usb_storage.o \ virtex2.o xilinx.o diff --cc common/cmd_jffs2.c index 34920b1abd,bc63f0c492..ecadb79634 --- a/common/cmd_jffs2.c +++ b/common/cmd_jffs2.c @@@ -99,11 -99,15 +99,15 @@@ #include + #ifdef CONFIG_NEW_NAND_CODE + #include + #endif + /* enable/disable debugging messages */ --#define DEBUG --#undef DEBUG ++#define DEBUG_JFFS ++#undef DEBUG_JFFS --#ifdef DEBUG ++#ifdef DEBUG_JFFS # define DEBUGF(fmt, args...) printf(fmt ,##args) #else # define DEBUGF(fmt, args...) @@@ -123,7 -127,7 +127,7 @@@ /* this flag needs to be set in part_info struct mask_flags * field for read-only partitions */ --#define MTD_WRITEABLE 1 ++#define MTD_WRITEABLE_CMD 1 #ifdef CONFIG_JFFS2_CMDLINE /* default values for mtdids and mtdparts variables */ @@@ -646,7 -600,7 +653,7 @@@ static int part_parse(const char *cons /* test for options */ mask_flags = 0; if (strncmp(p, "ro", 2) == 0) { -- mask_flags |= MTD_WRITEABLE; ++ mask_flags |= MTD_WRITEABLE_CMD; p += 2; } @@@ -711,8 -665,9 +718,9 @@@ static int device_validate(u8 type, u8 if (type == MTD_DEV_TYPE_NOR) { #if (CONFIG_COMMANDS & CFG_CMD_FLASH) if (num < CFG_MAX_FLASH_BANKS) { - extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; + extern flash_info_t flash_info[]; *size = flash_info[num].size; + return 0; } @@@ -1169,7 -1120,7 +1181,7 @@@ static int generate_mtdparts(char *buf } /* ro mask flag */ -- if (part->mask_flags && MTD_WRITEABLE) { ++ if (part->mask_flags && MTD_WRITEABLE_CMD) { len = 2; if (len > maxlen) goto cleanup; diff --cc common/cmd_nand.c index b0c01d1205,0c05255855..152873f1ae --- a/common/cmd_nand.c +++ b/common/cmd_nand.c @@@ -21,7 -21,7 +21,7 @@@ # define SHOW_BOOT_PROGRESS(arg) #endif - #if (CONFIG_COMMANDS & CFG_CMD_NAND) -#if (CONFIG_COMMANDS & CFG_CMD_NAND) && !defined CONFIG_NEW_NAND_CODE ++#if (CONFIG_COMMANDS & CFG_CMD_NAND) && !defined(CONFIG_NEW_NAND_CODE) #include #include diff --cc drivers/nand/diskonchip.c index 0000000000,b421d4c1c3..07e2549352 mode 000000,100644..100644 --- a/drivers/nand/diskonchip.c +++ b/drivers/nand/diskonchip.c @@@ -1,0 -1,1782 +1,1785 @@@ + /* + * drivers/mtd/nand/diskonchip.c + * + * (C) 2003 Red Hat, Inc. + * (C) 2004 Dan Brown + * (C) 2004 Kalev Lember + * + * Author: David Woodhouse + * Additional Diskonchip 2000 and Millennium support by Dan Brown + * Diskonchip Millennium Plus support by Kalev Lember + * + * Error correction code lifted from the old docecc code + * Author: Fabrice Bellard (fabrice.bellard@netgem.com) + * Copyright (C) 2000 Netgem S.A. + * converted to the generic Reed-Solomon library by Thomas Gleixner + * + * Interface to generic NAND code for M-Systems DiskOnChip devices + * + * $Id: diskonchip.c,v 1.45 2005/01/05 18:05:14 dwmw2 Exp $ + */ + ++#include ++#ifdef CONFIG_NEW_NAND_CODE + #include + #include + #include + #include + #include + #include + #include + + #include + #include + #include + #include + #include + #include + + /* Where to look for the devices? */ + #ifndef CONFIG_MTD_DISKONCHIP_PROBE_ADDRESS + #define CONFIG_MTD_DISKONCHIP_PROBE_ADDRESS 0 + #endif + + static unsigned long __initdata doc_locations[] = { + #if defined (__alpha__) || defined(__i386__) || defined(__x86_64__) + #ifdef CONFIG_MTD_DISKONCHIP_PROBE_HIGH + 0xfffc8000, 0xfffca000, 0xfffcc000, 0xfffce000, + 0xfffd0000, 0xfffd2000, 0xfffd4000, 0xfffd6000, + 0xfffd8000, 0xfffda000, 0xfffdc000, 0xfffde000, + 0xfffe0000, 0xfffe2000, 0xfffe4000, 0xfffe6000, + 0xfffe8000, 0xfffea000, 0xfffec000, 0xfffee000, + #else /* CONFIG_MTD_DOCPROBE_HIGH */ + 0xc8000, 0xca000, 0xcc000, 0xce000, + 0xd0000, 0xd2000, 0xd4000, 0xd6000, + 0xd8000, 0xda000, 0xdc000, 0xde000, + 0xe0000, 0xe2000, 0xe4000, 0xe6000, + 0xe8000, 0xea000, 0xec000, 0xee000, + #endif /* CONFIG_MTD_DOCPROBE_HIGH */ + #elif defined(__PPC__) + 0xe4000000, + #elif defined(CONFIG_MOMENCO_OCELOT) + 0x2f000000, + 0xff000000, + #elif defined(CONFIG_MOMENCO_OCELOT_G) || defined (CONFIG_MOMENCO_OCELOT_C) + 0xff000000, + ##else + #warning Unknown architecture for DiskOnChip. No default probe locations defined + #endif + 0xffffffff }; + + static struct mtd_info *doclist = NULL; + + struct doc_priv { + void __iomem *virtadr; + unsigned long physadr; + u_char ChipID; + u_char CDSNControl; + int chips_per_floor; /* The number of chips detected on each floor */ + int curfloor; + int curchip; + int mh0_page; + int mh1_page; + struct mtd_info *nextdoc; + }; + + /* Max number of eraseblocks to scan (from start of device) for the (I)NFTL + MediaHeader. The spec says to just keep going, I think, but that's just + silly. */ + #define MAX_MEDIAHEADER_SCAN 8 + + /* This is the syndrome computed by the HW ecc generator upon reading an empty + page, one with all 0xff for data and stored ecc code. */ + static u_char empty_read_syndrome[6] = { 0x26, 0xff, 0x6d, 0x47, 0x73, 0x7a }; + /* This is the ecc value computed by the HW ecc generator upon writing an empty + page, one with all 0xff for data. */ + static u_char empty_write_ecc[6] = { 0x4b, 0x00, 0xe2, 0x0e, 0x93, 0xf7 }; + + #define INFTL_BBT_RESERVED_BLOCKS 4 + + #define DoC_is_MillenniumPlus(doc) ((doc)->ChipID == DOC_ChipID_DocMilPlus16 || (doc)->ChipID == DOC_ChipID_DocMilPlus32) + #define DoC_is_Millennium(doc) ((doc)->ChipID == DOC_ChipID_DocMil) + #define DoC_is_2000(doc) ((doc)->ChipID == DOC_ChipID_Doc2k) + + static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd); + static void doc200x_select_chip(struct mtd_info *mtd, int chip); + + static int debug=0; + module_param(debug, int, 0); + + static int try_dword=1; + module_param(try_dword, int, 0); + + static int no_ecc_failures=0; + module_param(no_ecc_failures, int, 0); + + #ifdef CONFIG_MTD_PARTITIONS + static int no_autopart=0; + module_param(no_autopart, int, 0); + #endif + + #ifdef MTD_NAND_DISKONCHIP_BBTWRITE + static int inftl_bbt_write=1; + #else + static int inftl_bbt_write=0; + #endif + module_param(inftl_bbt_write, int, 0); + + static unsigned long doc_config_location = CONFIG_MTD_DISKONCHIP_PROBE_ADDRESS; + module_param(doc_config_location, ulong, 0); + MODULE_PARM_DESC(doc_config_location, "Physical memory address at which to probe for DiskOnChip"); + + + /* Sector size for HW ECC */ + #define SECTOR_SIZE 512 + /* The sector bytes are packed into NB_DATA 10 bit words */ + #define NB_DATA (((SECTOR_SIZE + 1) * 8 + 6) / 10) + /* Number of roots */ + #define NROOTS 4 + /* First consective root */ + #define FCR 510 + /* Number of symbols */ + #define NN 1023 + + /* the Reed Solomon control structure */ + static struct rs_control *rs_decoder; + + /* + * The HW decoder in the DoC ASIC's provides us a error syndrome, + * which we must convert to a standard syndrom usable by the generic + * Reed-Solomon library code. + * + * Fabrice Bellard figured this out in the old docecc code. I added + * some comments, improved a minor bit and converted it to make use + * of the generic Reed-Solomon libary. tglx + */ + static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) + { + int i, j, nerr, errpos[8]; + uint8_t parity; + uint16_t ds[4], s[5], tmp, errval[8], syn[4]; + + /* Convert the ecc bytes into words */ + ds[0] = ((ecc[4] & 0xff) >> 0) | ((ecc[5] & 0x03) << 8); + ds[1] = ((ecc[5] & 0xfc) >> 2) | ((ecc[2] & 0x0f) << 6); + ds[2] = ((ecc[2] & 0xf0) >> 4) | ((ecc[3] & 0x3f) << 4); + ds[3] = ((ecc[3] & 0xc0) >> 6) | ((ecc[0] & 0xff) << 2); + parity = ecc[1]; + + /* Initialize the syndrom buffer */ + for (i = 0; i < NROOTS; i++) + s[i] = ds[0]; + /* + * Evaluate + * s[i] = ds[3]x^3 + ds[2]x^2 + ds[1]x^1 + ds[0] + * where x = alpha^(FCR + i) + */ + for(j = 1; j < NROOTS; j++) { + if(ds[j] == 0) + continue; + tmp = rs->index_of[ds[j]]; + for(i = 0; i < NROOTS; i++) + s[i] ^= rs->alpha_to[rs_modnn(rs, tmp + (FCR + i) * j)]; + } + + /* Calc s[i] = s[i] / alpha^(v + i) */ + for (i = 0; i < NROOTS; i++) { + if (syn[i]) + syn[i] = rs_modnn(rs, rs->index_of[s[i]] + (NN - FCR - i)); + } + /* Call the decoder library */ + nerr = decode_rs16(rs, NULL, NULL, 1019, syn, 0, errpos, 0, errval); + + /* Incorrectable errors ? */ + if (nerr < 0) + return nerr; + + /* + * Correct the errors. The bitpositions are a bit of magic, + * but they are given by the design of the de/encoder circuit + * in the DoC ASIC's. + */ + for(i = 0;i < nerr; i++) { + int index, bitpos, pos = 1015 - errpos[i]; + uint8_t val; + if (pos >= NB_DATA && pos < 1019) + continue; + if (pos < NB_DATA) { + /* extract bit position (MSB first) */ + pos = 10 * (NB_DATA - 1 - pos) - 6; + /* now correct the following 10 bits. At most two bytes + can be modified since pos is even */ + index = (pos >> 3) ^ 1; + bitpos = pos & 7; + if ((index >= 0 && index < SECTOR_SIZE) || + index == (SECTOR_SIZE + 1)) { + val = (uint8_t) (errval[i] >> (2 + bitpos)); + parity ^= val; + if (index < SECTOR_SIZE) + data[index] ^= val; + } + index = ((pos >> 3) + 1) ^ 1; + bitpos = (bitpos + 10) & 7; + if (bitpos == 0) + bitpos = 8; + if ((index >= 0 && index < SECTOR_SIZE) || + index == (SECTOR_SIZE + 1)) { + val = (uint8_t)(errval[i] << (8 - bitpos)); + parity ^= val; + if (index < SECTOR_SIZE) + data[index] ^= val; + } + } + } + /* If the parity is wrong, no rescue possible */ + return parity ? -1 : nerr; + } + + static void DoC_Delay(struct doc_priv *doc, unsigned short cycles) + { + volatile char dummy; + int i; + + for (i = 0; i < cycles; i++) { + if (DoC_is_Millennium(doc)) + dummy = ReadDOC(doc->virtadr, NOP); + else if (DoC_is_MillenniumPlus(doc)) + dummy = ReadDOC(doc->virtadr, Mplus_NOP); + else + dummy = ReadDOC(doc->virtadr, DOCStatus); + } + + } + + #define CDSN_CTRL_FR_B_MASK (CDSN_CTRL_FR_B0 | CDSN_CTRL_FR_B1) + + /* DOC_WaitReady: Wait for RDY line to be asserted by the flash chip */ + static int _DoC_WaitReady(struct doc_priv *doc) + { + void __iomem *docptr = doc->virtadr; + unsigned long timeo = jiffies + (HZ * 10); + + if(debug) printk("_DoC_WaitReady...\n"); + /* Out-of-line routine to wait for chip response */ + if (DoC_is_MillenniumPlus(doc)) { + while ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) { + if (time_after(jiffies, timeo)) { + printk("_DoC_WaitReady timed out.\n"); + return -EIO; + } + udelay(1); + cond_resched(); + } + } else { + while (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) { + if (time_after(jiffies, timeo)) { + printk("_DoC_WaitReady timed out.\n"); + return -EIO; + } + udelay(1); + cond_resched(); + } + } + + return 0; + } + + static inline int DoC_WaitReady(struct doc_priv *doc) + { + void __iomem *docptr = doc->virtadr; + int ret = 0; + + if (DoC_is_MillenniumPlus(doc)) { + DoC_Delay(doc, 4); + + if ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) + /* Call the out-of-line routine to wait */ + ret = _DoC_WaitReady(doc); + } else { + DoC_Delay(doc, 4); + + if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) + /* Call the out-of-line routine to wait */ + ret = _DoC_WaitReady(doc); + DoC_Delay(doc, 2); + } + + if(debug) printk("DoC_WaitReady OK\n"); + return ret; + } + + static void doc2000_write_byte(struct mtd_info *mtd, u_char datum) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + + if(debug)printk("write_byte %02x\n", datum); + WriteDOC(datum, docptr, CDSNSlowIO); + WriteDOC(datum, docptr, 2k_CDSN_IO); + } + + static u_char doc2000_read_byte(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + u_char ret; + + ReadDOC(docptr, CDSNSlowIO); + DoC_Delay(doc, 2); + ret = ReadDOC(docptr, 2k_CDSN_IO); + if (debug) printk("read_byte returns %02x\n", ret); + return ret; + } + + static void doc2000_writebuf(struct mtd_info *mtd, + const u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + if (debug)printk("writebuf of %d bytes: ", len); + for (i=0; i < len; i++) { + WriteDOC_(buf[i], docptr, DoC_2k_CDSN_IO + i); + if (debug && i < 16) + printk("%02x ", buf[i]); + } + if (debug) printk("\n"); + } + + static void doc2000_readbuf(struct mtd_info *mtd, + u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + + if (debug)printk("readbuf of %d bytes: ", len); + + for (i=0; i < len; i++) { + buf[i] = ReadDOC(docptr, 2k_CDSN_IO + i); + } + } + + static void doc2000_readbuf_dword(struct mtd_info *mtd, + u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + + if (debug) printk("readbuf_dword of %d bytes: ", len); + + if (unlikely((((unsigned long)buf)|len) & 3)) { + for (i=0; i < len; i++) { + *(uint8_t *)(&buf[i]) = ReadDOC(docptr, 2k_CDSN_IO + i); + } + } else { + for (i=0; i < len; i+=4) { + *(uint32_t*)(&buf[i]) = readl(docptr + DoC_2k_CDSN_IO + i); + } + } + } + + static int doc2000_verifybuf(struct mtd_info *mtd, + const u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + + for (i=0; i < len; i++) + if (buf[i] != ReadDOC(docptr, 2k_CDSN_IO)) + return -EFAULT; + return 0; + } + + static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + uint16_t ret; + + doc200x_select_chip(mtd, nr); + doc200x_hwcontrol(mtd, NAND_CTL_SETCLE); + this->write_byte(mtd, NAND_CMD_READID); + doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE); + doc200x_hwcontrol(mtd, NAND_CTL_SETALE); + this->write_byte(mtd, 0); + doc200x_hwcontrol(mtd, NAND_CTL_CLRALE); + + ret = this->read_byte(mtd) << 8; + ret |= this->read_byte(mtd); + + if (doc->ChipID == DOC_ChipID_Doc2k && try_dword && !nr) { + /* First chip probe. See if we get same results by 32-bit access */ + union { + uint32_t dword; + uint8_t byte[4]; + } ident; + void __iomem *docptr = doc->virtadr; + + doc200x_hwcontrol(mtd, NAND_CTL_SETCLE); + doc2000_write_byte(mtd, NAND_CMD_READID); + doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE); + doc200x_hwcontrol(mtd, NAND_CTL_SETALE); + doc2000_write_byte(mtd, 0); + doc200x_hwcontrol(mtd, NAND_CTL_CLRALE); + + ident.dword = readl(docptr + DoC_2k_CDSN_IO); + if (((ident.byte[0] << 8) | ident.byte[1]) == ret) { + printk(KERN_INFO "DiskOnChip 2000 responds to DWORD access\n"); + this->read_buf = &doc2000_readbuf_dword; + } + } + + return ret; + } + + static void __init doc2000_count_chips(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + uint16_t mfrid; + int i; + + /* Max 4 chips per floor on DiskOnChip 2000 */ + doc->chips_per_floor = 4; + + /* Find out what the first chip is */ + mfrid = doc200x_ident_chip(mtd, 0); + + /* Find how many chips in each floor. */ + for (i = 1; i < 4; i++) { + if (doc200x_ident_chip(mtd, i) != mfrid) + break; + } + doc->chips_per_floor = i; + printk(KERN_DEBUG "Detected %d chips per floor.\n", i); + } + + static int doc200x_wait(struct mtd_info *mtd, struct nand_chip *this, int state) + { + struct doc_priv *doc = this->priv; + + int status; + + DoC_WaitReady(doc); + this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); + DoC_WaitReady(doc); + status = (int)this->read_byte(mtd); + + return status; + } + + static void doc2001_write_byte(struct mtd_info *mtd, u_char datum) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + + WriteDOC(datum, docptr, CDSNSlowIO); + WriteDOC(datum, docptr, Mil_CDSN_IO); + WriteDOC(datum, docptr, WritePipeTerm); + } + + static u_char doc2001_read_byte(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + + /*ReadDOC(docptr, CDSNSlowIO); */ + /* 11.4.5 -- delay twice to allow extended length cycle */ + DoC_Delay(doc, 2); + ReadDOC(docptr, ReadPipeInit); + /*return ReadDOC(docptr, Mil_CDSN_IO); */ + return ReadDOC(docptr, LastDataRead); + } + + static void doc2001_writebuf(struct mtd_info *mtd, + const u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + + for (i=0; i < len; i++) + WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i); + /* Terminate write pipeline */ + WriteDOC(0x00, docptr, WritePipeTerm); + } + + static void doc2001_readbuf(struct mtd_info *mtd, + u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + + /* Start read pipeline */ + ReadDOC(docptr, ReadPipeInit); + + for (i=0; i < len-1; i++) + buf[i] = ReadDOC(docptr, Mil_CDSN_IO + (i & 0xff)); + + /* Terminate read pipeline */ + buf[i] = ReadDOC(docptr, LastDataRead); + } + + static int doc2001_verifybuf(struct mtd_info *mtd, + const u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + + /* Start read pipeline */ + ReadDOC(docptr, ReadPipeInit); + + for (i=0; i < len-1; i++) + if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) { + ReadDOC(docptr, LastDataRead); + return i; + } + if (buf[i] != ReadDOC(docptr, LastDataRead)) + return i; + return 0; + } + + static u_char doc2001plus_read_byte(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + u_char ret; + + ReadDOC(docptr, Mplus_ReadPipeInit); + ReadDOC(docptr, Mplus_ReadPipeInit); + ret = ReadDOC(docptr, Mplus_LastDataRead); + if (debug) printk("read_byte returns %02x\n", ret); + return ret; + } + + static void doc2001plus_writebuf(struct mtd_info *mtd, + const u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + + if (debug)printk("writebuf of %d bytes: ", len); + for (i=0; i < len; i++) { + WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i); + if (debug && i < 16) + printk("%02x ", buf[i]); + } + if (debug) printk("\n"); + } + + static void doc2001plus_readbuf(struct mtd_info *mtd, + u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + + if (debug)printk("readbuf of %d bytes: ", len); + + /* Start read pipeline */ + ReadDOC(docptr, Mplus_ReadPipeInit); + ReadDOC(docptr, Mplus_ReadPipeInit); + + for (i=0; i < len-2; i++) { + buf[i] = ReadDOC(docptr, Mil_CDSN_IO); + if (debug && i < 16) + printk("%02x ", buf[i]); + } + + /* Terminate read pipeline */ + buf[len-2] = ReadDOC(docptr, Mplus_LastDataRead); + if (debug && i < 16) + printk("%02x ", buf[len-2]); + buf[len-1] = ReadDOC(docptr, Mplus_LastDataRead); + if (debug && i < 16) + printk("%02x ", buf[len-1]); + if (debug) printk("\n"); + } + + static int doc2001plus_verifybuf(struct mtd_info *mtd, + const u_char *buf, int len) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + + if (debug)printk("verifybuf of %d bytes: ", len); + + /* Start read pipeline */ + ReadDOC(docptr, Mplus_ReadPipeInit); + ReadDOC(docptr, Mplus_ReadPipeInit); + + for (i=0; i < len-2; i++) + if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) { + ReadDOC(docptr, Mplus_LastDataRead); + ReadDOC(docptr, Mplus_LastDataRead); + return i; + } + if (buf[len-2] != ReadDOC(docptr, Mplus_LastDataRead)) + return len-2; + if (buf[len-1] != ReadDOC(docptr, Mplus_LastDataRead)) + return len-1; + return 0; + } + + static void doc2001plus_select_chip(struct mtd_info *mtd, int chip) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int floor = 0; + + if(debug)printk("select chip (%d)\n", chip); + + if (chip == -1) { + /* Disable flash internally */ + WriteDOC(0, docptr, Mplus_FlashSelect); + return; + } + + floor = chip / doc->chips_per_floor; + chip -= (floor * doc->chips_per_floor); + + /* Assert ChipEnable and deassert WriteProtect */ + WriteDOC((DOC_FLASH_CE), docptr, Mplus_FlashSelect); + this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); + + doc->curchip = chip; + doc->curfloor = floor; + } + + static void doc200x_select_chip(struct mtd_info *mtd, int chip) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int floor = 0; + + if(debug)printk("select chip (%d)\n", chip); + + if (chip == -1) + return; + + floor = chip / doc->chips_per_floor; + chip -= (floor * doc->chips_per_floor); + + /* 11.4.4 -- deassert CE before changing chip */ + doc200x_hwcontrol(mtd, NAND_CTL_CLRNCE); + + WriteDOC(floor, docptr, FloorSelect); + WriteDOC(chip, docptr, CDSNDeviceSelect); + + doc200x_hwcontrol(mtd, NAND_CTL_SETNCE); + + doc->curchip = chip; + doc->curfloor = floor; + } + + static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + + switch(cmd) { + case NAND_CTL_SETNCE: + doc->CDSNControl |= CDSN_CTRL_CE; + break; + case NAND_CTL_CLRNCE: + doc->CDSNControl &= ~CDSN_CTRL_CE; + break; + case NAND_CTL_SETCLE: + doc->CDSNControl |= CDSN_CTRL_CLE; + break; + case NAND_CTL_CLRCLE: + doc->CDSNControl &= ~CDSN_CTRL_CLE; + break; + case NAND_CTL_SETALE: + doc->CDSNControl |= CDSN_CTRL_ALE; + break; + case NAND_CTL_CLRALE: + doc->CDSNControl &= ~CDSN_CTRL_ALE; + break; + case NAND_CTL_SETWP: + doc->CDSNControl |= CDSN_CTRL_WP; + break; + case NAND_CTL_CLRWP: + doc->CDSNControl &= ~CDSN_CTRL_WP; + break; + } + if (debug)printk("hwcontrol(%d): %02x\n", cmd, doc->CDSNControl); + WriteDOC(doc->CDSNControl, docptr, CDSNControl); + /* 11.4.3 -- 4 NOPs after CSDNControl write */ + DoC_Delay(doc, 4); + } + + static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int column, int page_addr) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + + /* + * Must terminate write pipeline before sending any commands + * to the device. + */ + if (command == NAND_CMD_PAGEPROG) { + WriteDOC(0x00, docptr, Mplus_WritePipeTerm); + WriteDOC(0x00, docptr, Mplus_WritePipeTerm); + } + + /* + * Write out the command to the device. + */ + if (command == NAND_CMD_SEQIN) { + int readcmd; + + if (column >= mtd->oobblock) { + /* OOB area */ + column -= mtd->oobblock; + readcmd = NAND_CMD_READOOB; + } else if (column < 256) { + /* First 256 bytes --> READ0 */ + readcmd = NAND_CMD_READ0; + } else { + column -= 256; + readcmd = NAND_CMD_READ1; + } + WriteDOC(readcmd, docptr, Mplus_FlashCmd); + } + WriteDOC(command, docptr, Mplus_FlashCmd); + WriteDOC(0, docptr, Mplus_WritePipeTerm); + WriteDOC(0, docptr, Mplus_WritePipeTerm); + + if (column != -1 || page_addr != -1) { + /* Serially input address */ + if (column != -1) { + /* Adjust columns for 16 bit buswidth */ + if (this->options & NAND_BUSWIDTH_16) + column >>= 1; + WriteDOC(column, docptr, Mplus_FlashAddress); + } + if (page_addr != -1) { + WriteDOC((unsigned char) (page_addr & 0xff), docptr, Mplus_FlashAddress); + WriteDOC((unsigned char) ((page_addr >> 8) & 0xff), docptr, Mplus_FlashAddress); + /* One more address cycle for higher density devices */ + if (this->chipsize & 0x0c000000) { + WriteDOC((unsigned char) ((page_addr >> 16) & 0x0f), docptr, Mplus_FlashAddress); + printk("high density\n"); + } + } + WriteDOC(0, docptr, Mplus_WritePipeTerm); + WriteDOC(0, docptr, Mplus_WritePipeTerm); + /* deassert ALE */ + if (command == NAND_CMD_READ0 || command == NAND_CMD_READ1 || command == NAND_CMD_READOOB || command == NAND_CMD_READID) + WriteDOC(0, docptr, Mplus_FlashControl); + } + + /* + * program and erase have their own busy handlers + * status and sequential in needs no delay + */ + switch (command) { + + case NAND_CMD_PAGEPROG: + case NAND_CMD_ERASE1: + case NAND_CMD_ERASE2: + case NAND_CMD_SEQIN: + case NAND_CMD_STATUS: + return; + + case NAND_CMD_RESET: + if (this->dev_ready) + break; + udelay(this->chip_delay); + WriteDOC(NAND_CMD_STATUS, docptr, Mplus_FlashCmd); + WriteDOC(0, docptr, Mplus_WritePipeTerm); + WriteDOC(0, docptr, Mplus_WritePipeTerm); + while ( !(this->read_byte(mtd) & 0x40)); + return; + + /* This applies to read commands */ + default: + /* + * If we don't have access to the busy pin, we apply the given + * command delay + */ + if (!this->dev_ready) { + udelay (this->chip_delay); + return; + } + } + + /* Apply this short delay always to ensure that we do wait tWB in + * any case on any machine. */ + ndelay (100); + /* wait until command is processed */ + while (!this->dev_ready(mtd)); + } + + static int doc200x_dev_ready(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + + if (DoC_is_MillenniumPlus(doc)) { + /* 11.4.2 -- must NOP four times before checking FR/B# */ + DoC_Delay(doc, 4); + if ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) { + if(debug) + printk("not ready\n"); + return 0; + } + if (debug)printk("was ready\n"); + return 1; + } else { + /* 11.4.2 -- must NOP four times before checking FR/B# */ + DoC_Delay(doc, 4); + if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) { + if(debug) + printk("not ready\n"); + return 0; + } + /* 11.4.2 -- Must NOP twice if it's ready */ + DoC_Delay(doc, 2); + if (debug)printk("was ready\n"); + return 1; + } + } + + static int doc200x_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) + { + /* This is our last resort if we couldn't find or create a BBT. Just + pretend all blocks are good. */ + return 0; + } + + static void doc200x_enable_hwecc(struct mtd_info *mtd, int mode) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + + /* Prime the ECC engine */ + switch(mode) { + case NAND_ECC_READ: + WriteDOC(DOC_ECC_RESET, docptr, ECCConf); + WriteDOC(DOC_ECC_EN, docptr, ECCConf); + break; + case NAND_ECC_WRITE: + WriteDOC(DOC_ECC_RESET, docptr, ECCConf); + WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf); + break; + } + } + + static void doc2001plus_enable_hwecc(struct mtd_info *mtd, int mode) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + + /* Prime the ECC engine */ + switch(mode) { + case NAND_ECC_READ: + WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf); + WriteDOC(DOC_ECC_EN, docptr, Mplus_ECCConf); + break; + case NAND_ECC_WRITE: + WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf); + WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, Mplus_ECCConf); + break; + } + } + + /* This code is only called on write */ + static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat, + unsigned char *ecc_code) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + int i; + int emptymatch = 1; + + /* flush the pipeline */ + if (DoC_is_2000(doc)) { + WriteDOC(doc->CDSNControl & ~CDSN_CTRL_FLASH_IO, docptr, CDSNControl); + WriteDOC(0, docptr, 2k_CDSN_IO); + WriteDOC(0, docptr, 2k_CDSN_IO); + WriteDOC(0, docptr, 2k_CDSN_IO); + WriteDOC(doc->CDSNControl, docptr, CDSNControl); + } else if (DoC_is_MillenniumPlus(doc)) { + WriteDOC(0, docptr, Mplus_NOP); + WriteDOC(0, docptr, Mplus_NOP); + WriteDOC(0, docptr, Mplus_NOP); + } else { + WriteDOC(0, docptr, NOP); + WriteDOC(0, docptr, NOP); + WriteDOC(0, docptr, NOP); + } + + for (i = 0; i < 6; i++) { + if (DoC_is_MillenniumPlus(doc)) + ecc_code[i] = ReadDOC_(docptr, DoC_Mplus_ECCSyndrome0 + i); + else + ecc_code[i] = ReadDOC_(docptr, DoC_ECCSyndrome0 + i); + if (ecc_code[i] != empty_write_ecc[i]) + emptymatch = 0; + } + if (DoC_is_MillenniumPlus(doc)) + WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf); + else + WriteDOC(DOC_ECC_DIS, docptr, ECCConf); + #if 0 + /* If emptymatch=1, we might have an all-0xff data buffer. Check. */ + if (emptymatch) { + /* Note: this somewhat expensive test should not be triggered + often. It could be optimized away by examining the data in + the writebuf routine, and remembering the result. */ + for (i = 0; i < 512; i++) { + if (dat[i] == 0xff) continue; + emptymatch = 0; + break; + } + } + /* If emptymatch still =1, we do have an all-0xff data buffer. + Return all-0xff ecc value instead of the computed one, so + it'll look just like a freshly-erased page. */ + if (emptymatch) memset(ecc_code, 0xff, 6); + #endif + return 0; + } + + static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc) + { + int i, ret = 0; + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + void __iomem *docptr = doc->virtadr; + volatile u_char dummy; + int emptymatch = 1; + + /* flush the pipeline */ + if (DoC_is_2000(doc)) { + dummy = ReadDOC(docptr, 2k_ECCStatus); + dummy = ReadDOC(docptr, 2k_ECCStatus); + dummy = ReadDOC(docptr, 2k_ECCStatus); + } else if (DoC_is_MillenniumPlus(doc)) { + dummy = ReadDOC(docptr, Mplus_ECCConf); + dummy = ReadDOC(docptr, Mplus_ECCConf); + dummy = ReadDOC(docptr, Mplus_ECCConf); + } else { + dummy = ReadDOC(docptr, ECCConf); + dummy = ReadDOC(docptr, ECCConf); + dummy = ReadDOC(docptr, ECCConf); + } + + /* Error occured ? */ + if (dummy & 0x80) { + for (i = 0; i < 6; i++) { + if (DoC_is_MillenniumPlus(doc)) + calc_ecc[i] = ReadDOC_(docptr, DoC_Mplus_ECCSyndrome0 + i); + else + calc_ecc[i] = ReadDOC_(docptr, DoC_ECCSyndrome0 + i); + if (calc_ecc[i] != empty_read_syndrome[i]) + emptymatch = 0; + } + /* If emptymatch=1, the read syndrome is consistent with an + all-0xff data and stored ecc block. Check the stored ecc. */ + if (emptymatch) { + for (i = 0; i < 6; i++) { + if (read_ecc[i] == 0xff) continue; + emptymatch = 0; + break; + } + } + /* If emptymatch still =1, check the data block. */ + if (emptymatch) { + /* Note: this somewhat expensive test should not be triggered + often. It could be optimized away by examining the data in + the readbuf routine, and remembering the result. */ + for (i = 0; i < 512; i++) { + if (dat[i] == 0xff) continue; + emptymatch = 0; + break; + } + } + /* If emptymatch still =1, this is almost certainly a freshly- + erased block, in which case the ECC will not come out right. + We'll suppress the error and tell the caller everything's + OK. Because it is. */ + if (!emptymatch) ret = doc_ecc_decode (rs_decoder, dat, calc_ecc); + if (ret > 0) + printk(KERN_ERR "doc200x_correct_data corrected %d errors\n", ret); + } + if (DoC_is_MillenniumPlus(doc)) + WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf); + else + WriteDOC(DOC_ECC_DIS, docptr, ECCConf); + if (no_ecc_failures && (ret == -1)) { + printk(KERN_ERR "suppressing ECC failure\n"); + ret = 0; + } + return ret; + } + + /*u_char mydatabuf[528]; */ + + static struct nand_oobinfo doc200x_oobinfo = { + .useecc = MTD_NANDECC_AUTOPLACE, + .eccbytes = 6, + .eccpos = {0, 1, 2, 3, 4, 5}, + .oobfree = { {8, 8} } + }; + + /* Find the (I)NFTL Media Header, and optionally also the mirror media header. + On sucessful return, buf will contain a copy of the media header for + further processing. id is the string to scan for, and will presumably be + either "ANAND" or "BNAND". If findmirror=1, also look for the mirror media + header. The page #s of the found media headers are placed in mh0_page and + mh1_page in the DOC private structure. */ + static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, + const char *id, int findmirror) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + unsigned offs, end = (MAX_MEDIAHEADER_SCAN << this->phys_erase_shift); + int ret; + size_t retlen; + + end = min(end, mtd->size); /* paranoia */ + for (offs = 0; offs < end; offs += mtd->erasesize) { + ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf); + if (retlen != mtd->oobblock) continue; + if (ret) { + printk(KERN_WARNING "ECC error scanning DOC at 0x%x\n", + offs); + } + if (memcmp(buf, id, 6)) continue; + printk(KERN_INFO "Found DiskOnChip %s Media Header at 0x%x\n", id, offs); + if (doc->mh0_page == -1) { + doc->mh0_page = offs >> this->page_shift; + if (!findmirror) return 1; + continue; + } + doc->mh1_page = offs >> this->page_shift; + return 2; + } + if (doc->mh0_page == -1) { + printk(KERN_WARNING "DiskOnChip %s Media Header not found.\n", id); + return 0; + } + /* Only one mediaheader was found. We want buf to contain a + mediaheader on return, so we'll have to re-read the one we found. */ + offs = doc->mh0_page << this->page_shift; + ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf); + if (retlen != mtd->oobblock) { + /* Insanity. Give up. */ + printk(KERN_ERR "Read DiskOnChip Media Header once, but can't reread it???\n"); + return 0; + } + return 1; + } + + static inline int __init nftl_partscan(struct mtd_info *mtd, + struct mtd_partition *parts) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + int ret = 0; + u_char *buf; + struct NFTLMediaHeader *mh; + const unsigned psize = 1 << this->page_shift; + unsigned blocks, maxblocks; + int offs, numheaders; + + buf = kmalloc(mtd->oobblock, GFP_KERNEL); + if (!buf) { + printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n"); + return 0; + } + if (!(numheaders=find_media_headers(mtd, buf, "ANAND", 1))) goto out; + mh = (struct NFTLMediaHeader *) buf; + + /*#ifdef CONFIG_MTD_DEBUG_VERBOSE */ + /* if (CONFIG_MTD_DEBUG_VERBOSE >= 2) */ + printk(KERN_INFO " DataOrgID = %s\n" + " NumEraseUnits = %d\n" + " FirstPhysicalEUN = %d\n" + " FormattedSize = %d\n" + " UnitSizeFactor = %d\n", + mh->DataOrgID, mh->NumEraseUnits, + mh->FirstPhysicalEUN, mh->FormattedSize, + mh->UnitSizeFactor); + /*#endif */ + + blocks = mtd->size >> this->phys_erase_shift; + maxblocks = min(32768U, mtd->erasesize - psize); + + if (mh->UnitSizeFactor == 0x00) { + /* Auto-determine UnitSizeFactor. The constraints are: + - There can be at most 32768 virtual blocks. + - There can be at most (virtual block size - page size) + virtual blocks (because MediaHeader+BBT must fit in 1). + */ + mh->UnitSizeFactor = 0xff; + while (blocks > maxblocks) { + blocks >>= 1; + maxblocks = min(32768U, (maxblocks << 1) + psize); + mh->UnitSizeFactor--; + } + printk(KERN_WARNING "UnitSizeFactor=0x00 detected. Correct value is assumed to be 0x%02x.\n", mh->UnitSizeFactor); + } + + /* NOTE: The lines below modify internal variables of the NAND and MTD + layers; variables with have already been configured by nand_scan. + Unfortunately, we didn't know before this point what these values + should be. Thus, this code is somewhat dependant on the exact + implementation of the NAND layer. */ + if (mh->UnitSizeFactor != 0xff) { + this->bbt_erase_shift += (0xff - mh->UnitSizeFactor); + mtd->erasesize <<= (0xff - mh->UnitSizeFactor); + printk(KERN_INFO "Setting virtual erase size to %d\n", mtd->erasesize); + blocks = mtd->size >> this->bbt_erase_shift; + maxblocks = min(32768U, mtd->erasesize - psize); + } + + if (blocks > maxblocks) { + printk(KERN_ERR "UnitSizeFactor of 0x%02x is inconsistent with device size. Aborting.\n", mh->UnitSizeFactor); + goto out; + } + + /* Skip past the media headers. */ + offs = max(doc->mh0_page, doc->mh1_page); + offs <<= this->page_shift; + offs += mtd->erasesize; + + /*parts[0].name = " DiskOnChip Boot / Media Header partition"; */ + /*parts[0].offset = 0; */ + /*parts[0].size = offs; */ + + parts[0].name = " DiskOnChip BDTL partition"; + parts[0].offset = offs; + parts[0].size = (mh->NumEraseUnits - numheaders) << this->bbt_erase_shift; + + offs += parts[0].size; + if (offs < mtd->size) { + parts[1].name = " DiskOnChip Remainder partition"; + parts[1].offset = offs; + parts[1].size = mtd->size - offs; + ret = 2; + goto out; + } + ret = 1; + out: + kfree(buf); + return ret; + } + + /* This is a stripped-down copy of the code in inftlmount.c */ + static inline int __init inftl_partscan(struct mtd_info *mtd, + struct mtd_partition *parts) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + int ret = 0; + u_char *buf; + struct INFTLMediaHeader *mh; + struct INFTLPartition *ip; + int numparts = 0; + int blocks; + int vshift, lastvunit = 0; + int i; + int end = mtd->size; + + if (inftl_bbt_write) + end -= (INFTL_BBT_RESERVED_BLOCKS << this->phys_erase_shift); + + buf = kmalloc(mtd->oobblock, GFP_KERNEL); + if (!buf) { + printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n"); + return 0; + } + + if (!find_media_headers(mtd, buf, "BNAND", 0)) goto out; + doc->mh1_page = doc->mh0_page + (4096 >> this->page_shift); + mh = (struct INFTLMediaHeader *) buf; + + mh->NoOfBootImageBlocks = le32_to_cpu(mh->NoOfBootImageBlocks); + mh->NoOfBinaryPartitions = le32_to_cpu(mh->NoOfBinaryPartitions); + mh->NoOfBDTLPartitions = le32_to_cpu(mh->NoOfBDTLPartitions); + mh->BlockMultiplierBits = le32_to_cpu(mh->BlockMultiplierBits); + mh->FormatFlags = le32_to_cpu(mh->FormatFlags); + mh->PercentUsed = le32_to_cpu(mh->PercentUsed); + + /*#ifdef CONFIG_MTD_DEBUG_VERBOSE */ + /* if (CONFIG_MTD_DEBUG_VERBOSE >= 2) */ + printk(KERN_INFO " bootRecordID = %s\n" + " NoOfBootImageBlocks = %d\n" + " NoOfBinaryPartitions = %d\n" + " NoOfBDTLPartitions = %d\n" + " BlockMultiplerBits = %d\n" + " FormatFlgs = %d\n" + " OsakVersion = %d.%d.%d.%d\n" + " PercentUsed = %d\n", + mh->bootRecordID, mh->NoOfBootImageBlocks, + mh->NoOfBinaryPartitions, + mh->NoOfBDTLPartitions, + mh->BlockMultiplierBits, mh->FormatFlags, + ((unsigned char *) &mh->OsakVersion)[0] & 0xf, + ((unsigned char *) &mh->OsakVersion)[1] & 0xf, + ((unsigned char *) &mh->OsakVersion)[2] & 0xf, + ((unsigned char *) &mh->OsakVersion)[3] & 0xf, + mh->PercentUsed); + /*#endif */ + + vshift = this->phys_erase_shift + mh->BlockMultiplierBits; + + blocks = mtd->size >> vshift; + if (blocks > 32768) { + printk(KERN_ERR "BlockMultiplierBits=%d is inconsistent with device size. Aborting.\n", mh->BlockMultiplierBits); + goto out; + } + + blocks = doc->chips_per_floor << (this->chip_shift - this->phys_erase_shift); + if (inftl_bbt_write && (blocks > mtd->erasesize)) { + printk(KERN_ERR "Writeable BBTs spanning more than one erase block are not yet supported. FIX ME!\n"); + goto out; + } + + /* Scan the partitions */ + for (i = 0; (i < 4); i++) { + ip = &(mh->Partitions[i]); + ip->virtualUnits = le32_to_cpu(ip->virtualUnits); + ip->firstUnit = le32_to_cpu(ip->firstUnit); + ip->lastUnit = le32_to_cpu(ip->lastUnit); + ip->flags = le32_to_cpu(ip->flags); + ip->spareUnits = le32_to_cpu(ip->spareUnits); + ip->Reserved0 = le32_to_cpu(ip->Reserved0); + + /*#ifdef CONFIG_MTD_DEBUG_VERBOSE */ + /* if (CONFIG_MTD_DEBUG_VERBOSE >= 2) */ + printk(KERN_INFO " PARTITION[%d] ->\n" + " virtualUnits = %d\n" + " firstUnit = %d\n" + " lastUnit = %d\n" + " flags = 0x%x\n" + " spareUnits = %d\n", + i, ip->virtualUnits, ip->firstUnit, + ip->lastUnit, ip->flags, + ip->spareUnits); + /*#endif */ + + /* + if ((i == 0) && (ip->firstUnit > 0)) { + parts[0].name = " DiskOnChip IPL / Media Header partition"; + parts[0].offset = 0; + parts[0].size = mtd->erasesize * ip->firstUnit; + numparts = 1; + } + */ + + if (ip->flags & INFTL_BINARY) + parts[numparts].name = " DiskOnChip BDK partition"; + else + parts[numparts].name = " DiskOnChip BDTL partition"; + parts[numparts].offset = ip->firstUnit << vshift; + parts[numparts].size = (1 + ip->lastUnit - ip->firstUnit) << vshift; + numparts++; + if (ip->lastUnit > lastvunit) lastvunit = ip->lastUnit; + if (ip->flags & INFTL_LAST) break; + } + lastvunit++; + if ((lastvunit << vshift) < end) { + parts[numparts].name = " DiskOnChip Remainder partition"; + parts[numparts].offset = lastvunit << vshift; + parts[numparts].size = end - parts[numparts].offset; + numparts++; + } + ret = numparts; + out: + kfree(buf); + return ret; + } + + static int __init nftl_scan_bbt(struct mtd_info *mtd) + { + int ret, numparts; + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + struct mtd_partition parts[2]; + + memset((char *) parts, 0, sizeof(parts)); + /* On NFTL, we have to find the media headers before we can read the + BBTs, since they're stored in the media header eraseblocks. */ + numparts = nftl_partscan(mtd, parts); + if (!numparts) return -EIO; + this->bbt_td->options = NAND_BBT_ABSPAGE | NAND_BBT_8BIT | + NAND_BBT_SAVECONTENT | NAND_BBT_WRITE | + NAND_BBT_VERSION; + this->bbt_td->veroffs = 7; + this->bbt_td->pages[0] = doc->mh0_page + 1; + if (doc->mh1_page != -1) { + this->bbt_md->options = NAND_BBT_ABSPAGE | NAND_BBT_8BIT | + NAND_BBT_SAVECONTENT | NAND_BBT_WRITE | + NAND_BBT_VERSION; + this->bbt_md->veroffs = 7; + this->bbt_md->pages[0] = doc->mh1_page + 1; + } else { + this->bbt_md = NULL; + } + + /* It's safe to set bd=NULL below because NAND_BBT_CREATE is not set. + At least as nand_bbt.c is currently written. */ + if ((ret = nand_scan_bbt(mtd, NULL))) + return ret; + add_mtd_device(mtd); + #ifdef CONFIG_MTD_PARTITIONS + if (!no_autopart) + add_mtd_partitions(mtd, parts, numparts); + #endif + return 0; + } + + static int __init inftl_scan_bbt(struct mtd_info *mtd) + { + int ret, numparts; + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + struct mtd_partition parts[5]; + + if (this->numchips > doc->chips_per_floor) { + printk(KERN_ERR "Multi-floor INFTL devices not yet supported.\n"); + return -EIO; + } + + if (DoC_is_MillenniumPlus(doc)) { + this->bbt_td->options = NAND_BBT_2BIT | NAND_BBT_ABSPAGE; + if (inftl_bbt_write) + this->bbt_td->options |= NAND_BBT_WRITE; + this->bbt_td->pages[0] = 2; + this->bbt_md = NULL; + } else { + this->bbt_td->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | + NAND_BBT_VERSION; + if (inftl_bbt_write) + this->bbt_td->options |= NAND_BBT_WRITE; + this->bbt_td->offs = 8; + this->bbt_td->len = 8; + this->bbt_td->veroffs = 7; + this->bbt_td->maxblocks = INFTL_BBT_RESERVED_BLOCKS; + this->bbt_td->reserved_block_code = 0x01; + this->bbt_td->pattern = "MSYS_BBT"; + + this->bbt_md->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | + NAND_BBT_VERSION; + if (inftl_bbt_write) + this->bbt_md->options |= NAND_BBT_WRITE; + this->bbt_md->offs = 8; + this->bbt_md->len = 8; + this->bbt_md->veroffs = 7; + this->bbt_md->maxblocks = INFTL_BBT_RESERVED_BLOCKS; + this->bbt_md->reserved_block_code = 0x01; + this->bbt_md->pattern = "TBB_SYSM"; + } + + /* It's safe to set bd=NULL below because NAND_BBT_CREATE is not set. + At least as nand_bbt.c is currently written. */ + if ((ret = nand_scan_bbt(mtd, NULL))) + return ret; + memset((char *) parts, 0, sizeof(parts)); + numparts = inftl_partscan(mtd, parts); + /* At least for now, require the INFTL Media Header. We could probably + do without it for non-INFTL use, since all it gives us is + autopartitioning, but I want to give it more thought. */ + if (!numparts) return -EIO; + add_mtd_device(mtd); + #ifdef CONFIG_MTD_PARTITIONS + if (!no_autopart) + add_mtd_partitions(mtd, parts, numparts); + #endif + return 0; + } + + static inline int __init doc2000_init(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + + this->write_byte = doc2000_write_byte; + this->read_byte = doc2000_read_byte; + this->write_buf = doc2000_writebuf; + this->read_buf = doc2000_readbuf; + this->verify_buf = doc2000_verifybuf; + this->scan_bbt = nftl_scan_bbt; + + doc->CDSNControl = CDSN_CTRL_FLASH_IO | CDSN_CTRL_ECC_IO; + doc2000_count_chips(mtd); + mtd->name = "DiskOnChip 2000 (NFTL Model)"; + return (4 * doc->chips_per_floor); + } + + static inline int __init doc2001_init(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + + this->write_byte = doc2001_write_byte; + this->read_byte = doc2001_read_byte; + this->write_buf = doc2001_writebuf; + this->read_buf = doc2001_readbuf; + this->verify_buf = doc2001_verifybuf; + + ReadDOC(doc->virtadr, ChipID); + ReadDOC(doc->virtadr, ChipID); + ReadDOC(doc->virtadr, ChipID); + if (ReadDOC(doc->virtadr, ChipID) != DOC_ChipID_DocMil) { + /* It's not a Millennium; it's one of the newer + DiskOnChip 2000 units with a similar ASIC. + Treat it like a Millennium, except that it + can have multiple chips. */ + doc2000_count_chips(mtd); + mtd->name = "DiskOnChip 2000 (INFTL Model)"; + this->scan_bbt = inftl_scan_bbt; + return (4 * doc->chips_per_floor); + } else { + /* Bog-standard Millennium */ + doc->chips_per_floor = 1; + mtd->name = "DiskOnChip Millennium"; + this->scan_bbt = nftl_scan_bbt; + return 1; + } + } + + static inline int __init doc2001plus_init(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + struct doc_priv *doc = this->priv; + + this->write_byte = NULL; + this->read_byte = doc2001plus_read_byte; + this->write_buf = doc2001plus_writebuf; + this->read_buf = doc2001plus_readbuf; + this->verify_buf = doc2001plus_verifybuf; + this->scan_bbt = inftl_scan_bbt; + this->hwcontrol = NULL; + this->select_chip = doc2001plus_select_chip; + this->cmdfunc = doc2001plus_command; + this->enable_hwecc = doc2001plus_enable_hwecc; + + doc->chips_per_floor = 1; + mtd->name = "DiskOnChip Millennium Plus"; + + return 1; + } + + static inline int __init doc_probe(unsigned long physadr) + { + unsigned char ChipID; + struct mtd_info *mtd; + struct nand_chip *nand; + struct doc_priv *doc; + void __iomem *virtadr; + unsigned char save_control; + unsigned char tmp, tmpb, tmpc; + int reg, len, numchips; + int ret = 0; + + virtadr = ioremap(physadr, DOC_IOREMAP_LEN); + if (!virtadr) { + printk(KERN_ERR "Diskonchip ioremap failed: 0x%x bytes at 0x%lx\n", DOC_IOREMAP_LEN, physadr); + return -EIO; + } + + /* It's not possible to cleanly detect the DiskOnChip - the + * bootup procedure will put the device into reset mode, and + * it's not possible to talk to it without actually writing + * to the DOCControl register. So we store the current contents + * of the DOCControl register's location, in case we later decide + * that it's not a DiskOnChip, and want to put it back how we + * found it. + */ + save_control = ReadDOC(virtadr, DOCControl); + + /* Reset the DiskOnChip ASIC */ + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, + virtadr, DOCControl); + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, + virtadr, DOCControl); + + /* Enable the DiskOnChip ASIC */ + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, + virtadr, DOCControl); + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, + virtadr, DOCControl); + + ChipID = ReadDOC(virtadr, ChipID); + + switch(ChipID) { + case DOC_ChipID_Doc2k: + reg = DoC_2k_ECCStatus; + break; + case DOC_ChipID_DocMil: + reg = DoC_ECCConf; + break; + case DOC_ChipID_DocMilPlus16: + case DOC_ChipID_DocMilPlus32: + case 0: + /* Possible Millennium Plus, need to do more checks */ + /* Possibly release from power down mode */ + for (tmp = 0; (tmp < 4); tmp++) + ReadDOC(virtadr, Mplus_Power); + + /* Reset the Millennium Plus ASIC */ + tmp = DOC_MODE_RESET | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | + DOC_MODE_BDECT; + WriteDOC(tmp, virtadr, Mplus_DOCControl); + WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm); + + mdelay(1); + /* Enable the Millennium Plus ASIC */ + tmp = DOC_MODE_NORMAL | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | + DOC_MODE_BDECT; + WriteDOC(tmp, virtadr, Mplus_DOCControl); + WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm); + mdelay(1); + + ChipID = ReadDOC(virtadr, ChipID); + + switch (ChipID) { + case DOC_ChipID_DocMilPlus16: + reg = DoC_Mplus_Toggle; + break; + case DOC_ChipID_DocMilPlus32: + printk(KERN_ERR "DiskOnChip Millennium Plus 32MB is not supported, ignoring.\n"); + default: + ret = -ENODEV; + goto notfound; + } + break; + + default: + ret = -ENODEV; + goto notfound; + } + /* Check the TOGGLE bit in the ECC register */ + tmp = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT; + tmpb = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT; + tmpc = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT; + if ((tmp == tmpb) || (tmp != tmpc)) { + printk(KERN_WARNING "Possible DiskOnChip at 0x%lx failed TOGGLE test, dropping.\n", physadr); + ret = -ENODEV; + goto notfound; + } + + for (mtd = doclist; mtd; mtd = doc->nextdoc) { + unsigned char oldval; + unsigned char newval; + nand = mtd->priv; + doc = nand->priv; + /* Use the alias resolution register to determine if this is + in fact the same DOC aliased to a new address. If writes + to one chip's alias resolution register change the value on + the other chip, they're the same chip. */ + if (ChipID == DOC_ChipID_DocMilPlus16) { + oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution); + newval = ReadDOC(virtadr, Mplus_AliasResolution); + } else { + oldval = ReadDOC(doc->virtadr, AliasResolution); + newval = ReadDOC(virtadr, AliasResolution); + } + if (oldval != newval) + continue; + if (ChipID == DOC_ChipID_DocMilPlus16) { + WriteDOC(~newval, virtadr, Mplus_AliasResolution); + oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution); + WriteDOC(newval, virtadr, Mplus_AliasResolution); /* restore it */ + } else { + WriteDOC(~newval, virtadr, AliasResolution); + oldval = ReadDOC(doc->virtadr, AliasResolution); + WriteDOC(newval, virtadr, AliasResolution); /* restore it */ + } + newval = ~newval; + if (oldval == newval) { + printk(KERN_DEBUG "Found alias of DOC at 0x%lx to 0x%lx\n", doc->physadr, physadr); + goto notfound; + } + } + + printk(KERN_NOTICE "DiskOnChip found at 0x%lx\n", physadr); + + len = sizeof(struct mtd_info) + + sizeof(struct nand_chip) + + sizeof(struct doc_priv) + + (2 * sizeof(struct nand_bbt_descr)); + mtd = kmalloc(len, GFP_KERNEL); + if (!mtd) { + printk(KERN_ERR "DiskOnChip kmalloc (%d bytes) failed!\n", len); + ret = -ENOMEM; + goto fail; + } + memset(mtd, 0, len); + + nand = (struct nand_chip *) (mtd + 1); + doc = (struct doc_priv *) (nand + 1); + nand->bbt_td = (struct nand_bbt_descr *) (doc + 1); + nand->bbt_md = nand->bbt_td + 1; + + mtd->priv = nand; + mtd->owner = THIS_MODULE; + + nand->priv = doc; + nand->select_chip = doc200x_select_chip; + nand->hwcontrol = doc200x_hwcontrol; + nand->dev_ready = doc200x_dev_ready; + nand->waitfunc = doc200x_wait; + nand->block_bad = doc200x_block_bad; + nand->enable_hwecc = doc200x_enable_hwecc; + nand->calculate_ecc = doc200x_calculate_ecc; + nand->correct_data = doc200x_correct_data; + + nand->autooob = &doc200x_oobinfo; + nand->eccmode = NAND_ECC_HW6_512; + nand->options = NAND_USE_FLASH_BBT | NAND_HWECC_SYNDROME; + + doc->physadr = physadr; + doc->virtadr = virtadr; + doc->ChipID = ChipID; + doc->curfloor = -1; + doc->curchip = -1; + doc->mh0_page = -1; + doc->mh1_page = -1; + doc->nextdoc = doclist; + + if (ChipID == DOC_ChipID_Doc2k) + numchips = doc2000_init(mtd); + else if (ChipID == DOC_ChipID_DocMilPlus16) + numchips = doc2001plus_init(mtd); + else + numchips = doc2001_init(mtd); + + if ((ret = nand_scan(mtd, numchips))) { + /* DBB note: i believe nand_release is necessary here, as + buffers may have been allocated in nand_base. Check with + Thomas. FIX ME! */ + /* nand_release will call del_mtd_device, but we haven't yet + added it. This is handled without incident by + del_mtd_device, as far as I can tell. */ + nand_release(mtd); + kfree(mtd); + goto fail; + } + + /* Success! */ + doclist = mtd; + return 0; + + notfound: + /* Put back the contents of the DOCControl register, in case it's not + actually a DiskOnChip. */ + WriteDOC(save_control, virtadr, DOCControl); + fail: + iounmap(virtadr); + return ret; + } + + static void release_nanddoc(void) + { + struct mtd_info *mtd, *nextmtd; + struct nand_chip *nand; + struct doc_priv *doc; + + for (mtd = doclist; mtd; mtd = nextmtd) { + nand = mtd->priv; + doc = nand->priv; + + nextmtd = doc->nextdoc; + nand_release(mtd); + iounmap(doc->virtadr); + kfree(mtd); + } + } + + static int __init init_nanddoc(void) + { + int i, ret = 0; + + /* We could create the decoder on demand, if memory is a concern. + * This way we have it handy, if an error happens + * + * Symbolsize is 10 (bits) + * Primitve polynomial is x^10+x^3+1 + * first consecutive root is 510 + * primitve element to generate roots = 1 + * generator polinomial degree = 4 + */ + rs_decoder = init_rs(10, 0x409, FCR, 1, NROOTS); + if (!rs_decoder) { + printk (KERN_ERR "DiskOnChip: Could not create a RS decoder\n"); + return -ENOMEM; + } + + if (doc_config_location) { + printk(KERN_INFO "Using configured DiskOnChip probe address 0x%lx\n", doc_config_location); + ret = doc_probe(doc_config_location); + if (ret < 0) + goto outerr; + } else { + for (i=0; (doc_locations[i] != 0xffffffff); i++) { + doc_probe(doc_locations[i]); + } + } + /* No banner message any more. Print a message if no DiskOnChip + found, so the user knows we at least tried. */ + if (!doclist) { + printk(KERN_INFO "No valid DiskOnChip devices found\n"); + ret = -ENODEV; + goto outerr; + } + return 0; + outerr: + free_rs(rs_decoder); + return ret; + } + + static void __exit cleanup_nanddoc(void) + { + /* Cleanup the nand/DoC resources */ + release_nanddoc(); + + /* Free the reed solomon resources */ + if (rs_decoder) { + free_rs(rs_decoder); + } + } + + module_init(init_nanddoc); + module_exit(cleanup_nanddoc); + + MODULE_LICENSE("GPL"); + MODULE_AUTHOR("David Woodhouse "); + MODULE_DESCRIPTION("M-Systems DiskOnChip 2000, Millennium and Millennium Plus device driver\n"); ++#endif /* CONFIG_NEW_NAND_CODE */ diff --cc drivers/nand/nand.c index 0000000000,d187c89ea1..bc85005b2a mode 000000,100644..100644 --- a/drivers/nand/nand.c +++ b/drivers/nand/nand.c @@@ -1,0 -1,71 +1,76 @@@ + /* + * (C) Copyright 2005 + * 2N Telekomunikace, a.s. + * Ladislav Michl + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + + #include + ++#ifdef CONFIG_NEW_NAND_CODE + #if (CONFIG_COMMANDS & CFG_CMD_NAND) + + #include + + #ifndef CFG_NAND_BASE_LIST + #define CFG_NAND_BASE_LIST { CFG_NAND_BASE } + #endif + + int nand_curr_device = -1; + nand_info_t nand_info[CFG_MAX_NAND_DEVICE]; + + static struct nand_chip nand_chip[CFG_MAX_NAND_DEVICE]; + static ulong base_address[CFG_MAX_NAND_DEVICE] = CFG_NAND_BASE_LIST; + + static const char default_nand_name[] = "nand"; + + extern void board_nand_init(struct nand_chip *nand); + + static void nand_init_chip(struct mtd_info *mtd, struct nand_chip *nand, + ulong base_addr) + { + mtd->priv = nand; + - nand->IO_ADDR_R = nand->IO_ADDR_W = base_addr; ++ nand->IO_ADDR_R = nand->IO_ADDR_W = (void __iomem *)base_addr; + board_nand_init(nand); + + if (nand_scan(mtd, 1) == 0) { + if (!mtd->name) - mtd->name = default_nand_name; ++ mtd->name = (char *)default_nand_name; + } else + mtd->name = NULL; + + } + + void nand_init(void) + { + int i; - ++ unsigned int size = 0; + for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) { + nand_init_chip(&nand_info[i], &nand_chip[i], base_address[i]); ++ size += nand_info[i].size; + if (nand_curr_device == -1) + nand_curr_device = i; - } ++} ++ printf("%lu MiB\n", size / (1024 * 1024)); + } + + #endif ++#endif /* CONFIG_NEW_NAND_CODE */ ++ diff --cc drivers/nand/nand_base.c index 0000000000,9ec5af9d71..b039c3cd8c mode 000000,100644..100644 --- a/drivers/nand/nand_base.c +++ b/drivers/nand/nand_base.c @@@ -1,0 -1,2658 +1,2664 @@@ + /* + * drivers/mtd/nand.c + * + * Overview: + * This is the generic MTD driver for NAND flash devices. It should be + * capable of working with almost all NAND chips currently available. + * Basic support for AG-AND chips is provided. + * + * Additional technical information is available on + * http://www.linux-mtd.infradead.org/tech/nand.html + * + * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) + * 2002 Thomas Gleixner (tglx@linutronix.de) + * + * 02-08-2004 tglx: support for strange chips, which cannot auto increment + * pages on read / read_oob + * + * 03-17-2004 tglx: Check ready before auto increment check. Simon Bayes + * pointed this out, as he marked an auto increment capable chip + * as NOAUTOINCR in the board driver. + * Make reads over block boundaries work too + * + * 04-14-2004 tglx: first working version for 2k page size chips + * + * 05-19-2004 tglx: Basic support for Renesas AG-AND chips + * + * 09-24-2004 tglx: add support for hardware controllers (e.g. ECC) shared + * among multiple independend devices. Suggestions and initial patch + * from Ben Dooks + * + * Credits: + * David Woodhouse for adding multichip support + * + * Aleph One Ltd. and Toby Churchill Ltd. for supporting the + * rework for 2K page size chips + * + * TODO: + * Enable cached programming for 2k page size chips + * Check, if mtd->ecctype should be set to MTD_ECC_HW + * if we have HW ecc support. + * The AG-AND chips have nice features for speed improvement, + * which are not supported yet. Read / program 4 pages in one go. + * + * $Id: nand_base.c,v 1.126 2004/12/13 11:22:25 lavinen Exp $ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + + /* XXX U-BOOT XXX */ + #if 0 + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + + #ifdef CONFIG_MTD_PARTITIONS + #include + #endif + + #endif + + #include ++#ifdef CONFIG_NEW_NAND_CODE + + #if (CONFIG_COMMANDS & CFG_CMD_NAND) + + #include + #include + #include + #include + #include + #include + + #include + #include + + #ifdef CONFIG_JFFS2_NAND + #include + #endif + + /* Define default oob placement schemes for large and small page devices */ + static struct nand_oobinfo nand_oob_8 = { + .useecc = MTD_NANDECC_AUTOPLACE, + .eccbytes = 3, + .eccpos = {0, 1, 2}, + .oobfree = { {3, 2}, {6, 2} } + }; + + static struct nand_oobinfo nand_oob_16 = { + .useecc = MTD_NANDECC_AUTOPLACE, + .eccbytes = 6, + .eccpos = {0, 1, 2, 3, 6, 7}, + .oobfree = { {8, 8} } + }; + + static struct nand_oobinfo nand_oob_64 = { + .useecc = MTD_NANDECC_AUTOPLACE, + .eccbytes = 24, + .eccpos = { + 40, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, + 56, 57, 58, 59, 60, 61, 62, 63}, + .oobfree = { {2, 38} } + }; + + /* This is used for padding purposes in nand_write_oob */ + static u_char ffchars[] = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + }; + + /* + * NAND low-level MTD interface functions + */ + static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len); + static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len); + static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len); + + static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf); + static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, + size_t * retlen, u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel); + static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf); + static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf); + static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, + size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel); + static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char *buf); + /* XXX U-BOOT XXX */ + #if 0 + static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, + unsigned long count, loff_t to, size_t * retlen); + static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, + unsigned long count, loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel); + #endif + static int nand_erase (struct mtd_info *mtd, struct erase_info *instr); + static void nand_sync (struct mtd_info *mtd); + + /* Some internal functions */ + static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, u_char *oob_buf, + struct nand_oobinfo *oobsel, int mode); + #ifdef CONFIG_MTD_NAND_VERIFY_WRITE + static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, + u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode); + #else + #define nand_verify_pages(...) (0) + #endif + + static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state); + + /** + * nand_release_device - [GENERIC] release chip + * @mtd: MTD device structure + * + * Deselect, release chip lock and wake up anyone waiting on the device + */ + /* XXX U-BOOT XXX */ + #if 0 + static void nand_release_device (struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + + /* De-select the NAND device */ + this->select_chip(mtd, -1); + /* Do we have a hardware controller ? */ + if (this->controller) { + spin_lock(&this->controller->lock); + this->controller->active = NULL; + spin_unlock(&this->controller->lock); + } + /* Release the chip */ + spin_lock (&this->chip_lock); + this->state = FL_READY; + wake_up (&this->wq); + spin_unlock (&this->chip_lock); + } + #else + static void nand_release_device (struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + this->select_chip(mtd, -1); /* De-select the NAND device */ + } + #endif + + /** + * nand_read_byte - [DEFAULT] read one byte from the chip + * @mtd: MTD device structure + * + * Default read function for 8bit buswith + */ + static u_char nand_read_byte(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + return readb(this->IO_ADDR_R); + } + + /** + * nand_write_byte - [DEFAULT] write one byte to the chip + * @mtd: MTD device structure + * @byte: pointer to data byte to write + * + * Default write function for 8it buswith + */ + static void nand_write_byte(struct mtd_info *mtd, u_char byte) + { + struct nand_chip *this = mtd->priv; + writeb(byte, this->IO_ADDR_W); + } + + /** + * nand_read_byte16 - [DEFAULT] read one byte endianess aware from the chip + * @mtd: MTD device structure + * + * Default read function for 16bit buswith with + * endianess conversion + */ + static u_char nand_read_byte16(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + return (u_char) cpu_to_le16(readw(this->IO_ADDR_R)); + } + + /** + * nand_write_byte16 - [DEFAULT] write one byte endianess aware to the chip + * @mtd: MTD device structure + * @byte: pointer to data byte to write + * + * Default write function for 16bit buswith with + * endianess conversion + */ + static void nand_write_byte16(struct mtd_info *mtd, u_char byte) + { + struct nand_chip *this = mtd->priv; + writew(le16_to_cpu((u16) byte), this->IO_ADDR_W); + } + + /** + * nand_read_word - [DEFAULT] read one word from the chip + * @mtd: MTD device structure + * + * Default read function for 16bit buswith without + * endianess conversion + */ + static u16 nand_read_word(struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + return readw(this->IO_ADDR_R); + } + + /** + * nand_write_word - [DEFAULT] write one word to the chip + * @mtd: MTD device structure + * @word: data word to write + * + * Default write function for 16bit buswith without + * endianess conversion + */ + static void nand_write_word(struct mtd_info *mtd, u16 word) + { + struct nand_chip *this = mtd->priv; + writew(word, this->IO_ADDR_W); + } + + /** + * nand_select_chip - [DEFAULT] control CE line + * @mtd: MTD device structure + * @chip: chipnumber to select, -1 for deselect + * + * Default select function for 1 chip devices. + */ + static void nand_select_chip(struct mtd_info *mtd, int chip) + { + struct nand_chip *this = mtd->priv; + switch(chip) { + case -1: + this->hwcontrol(mtd, NAND_CTL_CLRNCE); + break; + case 0: + this->hwcontrol(mtd, NAND_CTL_SETNCE); + break; + + default: + BUG(); + } + } + + /** + * nand_write_buf - [DEFAULT] write buffer to chip + * @mtd: MTD device structure + * @buf: data buffer + * @len: number of bytes to write + * + * Default write function for 8bit buswith + */ + static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len) + { + int i; + struct nand_chip *this = mtd->priv; + + for (i=0; iIO_ADDR_W); + } + + /** + * nand_read_buf - [DEFAULT] read chip data into buffer + * @mtd: MTD device structure + * @buf: buffer to store date + * @len: number of bytes to read + * + * Default read function for 8bit buswith + */ + static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len) + { + int i; + struct nand_chip *this = mtd->priv; + + for (i=0; iIO_ADDR_R); + } + + /** + * nand_verify_buf - [DEFAULT] Verify chip data against buffer + * @mtd: MTD device structure + * @buf: buffer containing the data to compare + * @len: number of bytes to compare + * + * Default verify function for 8bit buswith + */ + static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) + { + int i; + struct nand_chip *this = mtd->priv; + + for (i=0; iIO_ADDR_R)) + return -EFAULT; + + return 0; + } + + /** + * nand_write_buf16 - [DEFAULT] write buffer to chip + * @mtd: MTD device structure + * @buf: data buffer + * @len: number of bytes to write + * + * Default write function for 16bit buswith + */ + static void nand_write_buf16(struct mtd_info *mtd, const u_char *buf, int len) + { + int i; + struct nand_chip *this = mtd->priv; + u16 *p = (u16 *) buf; + len >>= 1; + + for (i=0; iIO_ADDR_W); + + } + + /** + * nand_read_buf16 - [DEFAULT] read chip data into buffer + * @mtd: MTD device structure + * @buf: buffer to store date + * @len: number of bytes to read + * + * Default read function for 16bit buswith + */ + static void nand_read_buf16(struct mtd_info *mtd, u_char *buf, int len) + { + int i; + struct nand_chip *this = mtd->priv; + u16 *p = (u16 *) buf; + len >>= 1; + + for (i=0; iIO_ADDR_R); + } + + /** + * nand_verify_buf16 - [DEFAULT] Verify chip data against buffer + * @mtd: MTD device structure + * @buf: buffer containing the data to compare + * @len: number of bytes to compare + * + * Default verify function for 16bit buswith + */ + static int nand_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len) + { + int i; + struct nand_chip *this = mtd->priv; + u16 *p = (u16 *) buf; + len >>= 1; + + for (i=0; iIO_ADDR_R)) + return -EFAULT; + + return 0; + } + + /** + * nand_block_bad - [DEFAULT] Read bad block marker from the chip + * @mtd: MTD device structure + * @ofs: offset from device start + * @getchip: 0, if the chip is already selected + * + * Check, if the block is bad. + */ + static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) + { + int page, chipnr, res = 0; + struct nand_chip *this = mtd->priv; + u16 bad; + + if (getchip) { + page = (int)(ofs >> this->page_shift); + chipnr = (int)(ofs >> this->chip_shift); + + /* Grab the lock and see if the device is available */ + nand_get_device (this, mtd, FL_READING); + + /* Select the NAND device */ + this->select_chip(mtd, chipnr); + } else + page = (int) ofs; + + if (this->options & NAND_BUSWIDTH_16) { + this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page & this->pagemask); + bad = cpu_to_le16(this->read_word(mtd)); + if (this->badblockpos & 0x1) + bad >>= 1; + if ((bad & 0xFF) != 0xff) + res = 1; + } else { + this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos, page & this->pagemask); + if (this->read_byte(mtd) != 0xff) + res = 1; + } + + if (getchip) { + /* Deselect and wake up anyone waiting on the device */ + nand_release_device(mtd); + } + + return res; + } + + /** + * nand_default_block_markbad - [DEFAULT] mark a block bad + * @mtd: MTD device structure + * @ofs: offset from device start + * + * This is the default implementation, which can be overridden by + * a hardware specific driver. + */ + static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) + { + struct nand_chip *this = mtd->priv; + u_char buf[2] = {0, 0}; + size_t retlen; + int block; + + /* Get block number */ + block = ((int) ofs) >> this->bbt_erase_shift; + this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); + + /* Do we have a flash based bad block table ? */ + if (this->options & NAND_USE_FLASH_BBT) + return nand_update_bbt (mtd, ofs); + + /* We write two bytes, so we dont have to mess with 16 bit access */ + ofs += mtd->oobsize + (this->badblockpos & ~0x01); + return nand_write_oob (mtd, ofs , 2, &retlen, buf); + } + + /** + * nand_check_wp - [GENERIC] check if the chip is write protected + * @mtd: MTD device structure + * Check, if the device is write protected + * + * The function expects, that the device is already selected + */ + static int nand_check_wp (struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + /* Check the WP bit */ + this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1); + return (this->read_byte(mtd) & 0x80) ? 0 : 1; + } + + /** + * nand_block_checkbad - [GENERIC] Check if a block is marked bad + * @mtd: MTD device structure + * @ofs: offset from device start + * @getchip: 0, if the chip is already selected + * @allowbbt: 1, if its allowed to access the bbt area + * + * Check, if the block is bad. Either by reading the bad block table or + * calling of the scan function. + */ + static int nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt) + { + struct nand_chip *this = mtd->priv; + + if (!this->bbt) + return this->block_bad(mtd, ofs, getchip); + + /* Return info from the table */ + return nand_isbad_bbt (mtd, ofs, allowbbt); + } + + /** + * nand_command - [DEFAULT] Send command to NAND device + * @mtd: MTD device structure + * @command: the command to be sent + * @column: the column address for this command, -1 if none + * @page_addr: the page address for this command, -1 if none + * + * Send command to NAND device. This function is used for small page + * devices (256/512 Bytes per page) + */ + static void nand_command (struct mtd_info *mtd, unsigned command, int column, int page_addr) + { + register struct nand_chip *this = mtd->priv; + + /* Begin command latch cycle */ + this->hwcontrol(mtd, NAND_CTL_SETCLE); + /* + * Write out the command to the device. + */ + if (command == NAND_CMD_SEQIN) { + int readcmd; + + if (column >= mtd->oobblock) { + /* OOB area */ + column -= mtd->oobblock; + readcmd = NAND_CMD_READOOB; + } else if (column < 256) { + /* First 256 bytes --> READ0 */ + readcmd = NAND_CMD_READ0; + } else { + column -= 256; + readcmd = NAND_CMD_READ1; + } + this->write_byte(mtd, readcmd); + } + this->write_byte(mtd, command); + + /* Set ALE and clear CLE to start address cycle */ + this->hwcontrol(mtd, NAND_CTL_CLRCLE); + + if (column != -1 || page_addr != -1) { + this->hwcontrol(mtd, NAND_CTL_SETALE); + + /* Serially input address */ + if (column != -1) { + /* Adjust columns for 16 bit buswidth */ + if (this->options & NAND_BUSWIDTH_16) + column >>= 1; + this->write_byte(mtd, column); + } + if (page_addr != -1) { + this->write_byte(mtd, (unsigned char) (page_addr & 0xff)); + this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff)); + /* One more address cycle for devices > 32MiB */ + if (this->chipsize > (32 << 20)) + this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0x0f)); + } + /* Latch in address */ + this->hwcontrol(mtd, NAND_CTL_CLRALE); + } + + /* + * program and erase have their own busy handlers + * status and sequential in needs no delay + */ + switch (command) { + + case NAND_CMD_PAGEPROG: + case NAND_CMD_ERASE1: + case NAND_CMD_ERASE2: + case NAND_CMD_SEQIN: + case NAND_CMD_STATUS: + return; + + case NAND_CMD_RESET: + if (this->dev_ready) + break; + udelay(this->chip_delay); + this->hwcontrol(mtd, NAND_CTL_SETCLE); + this->write_byte(mtd, NAND_CMD_STATUS); + this->hwcontrol(mtd, NAND_CTL_CLRCLE); + while ( !(this->read_byte(mtd) & 0x40)); + return; + + /* This applies to read commands */ + default: + /* + * If we don't have access to the busy pin, we apply the given + * command delay + */ + if (!this->dev_ready) { + udelay (this->chip_delay); + return; + } + } + + /* Apply this short delay always to ensure that we do wait tWB in + * any case on any machine. */ + ndelay (100); + /* wait until command is processed */ + while (!this->dev_ready(mtd)); + } + + /** + * nand_command_lp - [DEFAULT] Send command to NAND large page device + * @mtd: MTD device structure + * @command: the command to be sent + * @column: the column address for this command, -1 if none + * @page_addr: the page address for this command, -1 if none + * + * Send command to NAND device. This is the version for the new large page devices + * We dont have the seperate regions as we have in the small page devices. + * We must emulate NAND_CMD_READOOB to keep the code compatible. + * + */ + static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, int page_addr) + { + register struct nand_chip *this = mtd->priv; + + /* Emulate NAND_CMD_READOOB */ + if (command == NAND_CMD_READOOB) { + column += mtd->oobblock; + command = NAND_CMD_READ0; + } + + + /* Begin command latch cycle */ + this->hwcontrol(mtd, NAND_CTL_SETCLE); + /* Write out the command to the device. */ + this->write_byte(mtd, command); + /* End command latch cycle */ + this->hwcontrol(mtd, NAND_CTL_CLRCLE); + + if (column != -1 || page_addr != -1) { + this->hwcontrol(mtd, NAND_CTL_SETALE); + + /* Serially input address */ + if (column != -1) { + /* Adjust columns for 16 bit buswidth */ + if (this->options & NAND_BUSWIDTH_16) + column >>= 1; + this->write_byte(mtd, column & 0xff); + this->write_byte(mtd, column >> 8); + } + if (page_addr != -1) { + this->write_byte(mtd, (unsigned char) (page_addr & 0xff)); + this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff)); + /* One more address cycle for devices > 128MiB */ + if (this->chipsize > (128 << 20)) + this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0xff)); + } + /* Latch in address */ + this->hwcontrol(mtd, NAND_CTL_CLRALE); + } + + /* + * program and erase have their own busy handlers + * status and sequential in needs no delay + */ + switch (command) { + + case NAND_CMD_CACHEDPROG: + case NAND_CMD_PAGEPROG: + case NAND_CMD_ERASE1: + case NAND_CMD_ERASE2: + case NAND_CMD_SEQIN: + case NAND_CMD_STATUS: + return; + + + case NAND_CMD_RESET: + if (this->dev_ready) + break; + udelay(this->chip_delay); + this->hwcontrol(mtd, NAND_CTL_SETCLE); + this->write_byte(mtd, NAND_CMD_STATUS); + this->hwcontrol(mtd, NAND_CTL_CLRCLE); + while ( !(this->read_byte(mtd) & 0x40)); + return; + + case NAND_CMD_READ0: + /* Begin command latch cycle */ + this->hwcontrol(mtd, NAND_CTL_SETCLE); + /* Write out the start read command */ + this->write_byte(mtd, NAND_CMD_READSTART); + /* End command latch cycle */ + this->hwcontrol(mtd, NAND_CTL_CLRCLE); + /* Fall through into ready check */ + + /* This applies to read commands */ + default: + /* + * If we don't have access to the busy pin, we apply the given + * command delay + */ + if (!this->dev_ready) { + udelay (this->chip_delay); + return; + } + } + + /* Apply this short delay always to ensure that we do wait tWB in + * any case on any machine. */ + ndelay (100); + /* wait until command is processed */ + while (!this->dev_ready(mtd)); + } + + /** + * nand_get_device - [GENERIC] Get chip for selected access + * @this: the nand chip descriptor + * @mtd: MTD device structure + * @new_state: the state which is requested + * + * Get the device and lock it for exclusive access + */ + /* XXX U-BOOT XXX */ + #if 0 + static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state) + { + struct nand_chip *active = this; + + DECLARE_WAITQUEUE (wait, current); + + /* + * Grab the lock and see if the device is available + */ + retry: + /* Hardware controller shared among independend devices */ + if (this->controller) { + spin_lock (&this->controller->lock); + if (this->controller->active) + active = this->controller->active; + else + this->controller->active = this; + spin_unlock (&this->controller->lock); + } + + if (active == this) { + spin_lock (&this->chip_lock); + if (this->state == FL_READY) { + this->state = new_state; + spin_unlock (&this->chip_lock); + return; + } + } + set_current_state (TASK_UNINTERRUPTIBLE); + add_wait_queue (&active->wq, &wait); + spin_unlock (&active->chip_lock); + schedule (); + remove_wait_queue (&active->wq, &wait); + goto retry; + } + #else + static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state) {} + #endif + + /** + * nand_wait - [DEFAULT] wait until the command is done + * @mtd: MTD device structure + * @this: NAND chip structure + * @state: state to select the max. timeout value + * + * Wait for command done. This applies to erase and program only + * Erase can take up to 400ms and program up to 20ms according to + * general NAND and SmartMedia specs + * + */ + /* XXX U-BOOT XXX */ + #if 0 + static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) + { + unsigned long timeo = jiffies; + int status; + + if (state == FL_ERASING) + timeo += (HZ * 400) / 1000; + else + timeo += (HZ * 20) / 1000; + + /* Apply this short delay always to ensure that we do wait tWB in + * any case on any machine. */ + ndelay (100); + + if ((state == FL_ERASING) && (this->options & NAND_IS_AND)) + this->cmdfunc (mtd, NAND_CMD_STATUS_MULTI, -1, -1); + else + this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1); + + while (time_before(jiffies, timeo)) { + /* Check, if we were interrupted */ + if (this->state != state) + return 0; + + if (this->dev_ready) { + if (this->dev_ready(mtd)) + break; + } else { + if (this->read_byte(mtd) & NAND_STATUS_READY) + break; + } + yield (); + } + status = (int) this->read_byte(mtd); + return status; + + return 0; + } + #else + static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) + { + unsigned long timeo; + + if (state == FL_ERASING) + timeo = CFG_HZ * 400; + else + timeo = CFG_HZ * 20; + + if ((state == FL_ERASING) && (this->options & NAND_IS_AND)) + this->cmdfunc(mtd, NAND_CMD_STATUS_MULTI, -1, -1); + else + this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); + - reset_timer_masked(); ++ reset_timer(); + + while (1) { - if (get_timer_masked() > timeo) ++ if (get_timer(0) > timeo) { ++ printf("Timeout!"); + return 0; ++ } + + if (this->dev_ready) { + if (this->dev_ready(mtd)) + break; + } else { + if (this->read_byte(mtd) & NAND_STATUS_READY) + break; + } + } + ++ /* XXX nand device 1 on dave (PPChameleonEVB) needs more time */ ++ reset_timer(); ++ while (get_timer(0) < 10); ++ + return this->read_byte(mtd); + } + #endif + + /** + * nand_write_page - [GENERIC] write one page + * @mtd: MTD device structure + * @this: NAND chip structure + * @page: startpage inside the chip, must be called with (page & this->pagemask) + * @oob_buf: out of band data buffer + * @oobsel: out of band selecttion structre + * @cached: 1 = enable cached programming if supported by chip + * + * Nand_page_program function is used for write and writev ! + * This function will always program a full page of data + * If you call it with a non page aligned buffer, you're lost :) + * + * Cached programming is not supported yet. + */ + static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, + u_char *oob_buf, struct nand_oobinfo *oobsel, int cached) + { + int i, status; + u_char ecc_code[32]; + int eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE; + int *oob_config = oobsel->eccpos; + int datidx = 0, eccidx = 0, eccsteps = this->eccsteps; + int eccbytes = 0; + + /* FIXME: Enable cached programming */ + cached = 0; + + /* Send command to begin auto page programming */ + this->cmdfunc (mtd, NAND_CMD_SEQIN, 0x00, page); + + /* Write out complete page of data, take care of eccmode */ + switch (eccmode) { + /* No ecc, write all */ + case NAND_ECC_NONE: + printk (KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n"); + this->write_buf(mtd, this->data_poi, mtd->oobblock); + break; + + /* Software ecc 3/256, write all */ + case NAND_ECC_SOFT: + for (; eccsteps; eccsteps--) { + this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code); + for (i = 0; i < 3; i++, eccidx++) + oob_buf[oob_config[eccidx]] = ecc_code[i]; + datidx += this->eccsize; + } + this->write_buf(mtd, this->data_poi, mtd->oobblock); + break; + default: + eccbytes = this->eccbytes; + for (; eccsteps; eccsteps--) { + /* enable hardware ecc logic for write */ + this->enable_hwecc(mtd, NAND_ECC_WRITE); + this->write_buf(mtd, &this->data_poi[datidx], this->eccsize); + this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code); + for (i = 0; i < eccbytes; i++, eccidx++) + oob_buf[oob_config[eccidx]] = ecc_code[i]; + /* If the hardware ecc provides syndromes then + * the ecc code must be written immidiately after + * the data bytes (words) */ + if (this->options & NAND_HWECC_SYNDROME) + this->write_buf(mtd, ecc_code, eccbytes); + datidx += this->eccsize; + } + break; + } + + /* Write out OOB data */ + if (this->options & NAND_HWECC_SYNDROME) + this->write_buf(mtd, &oob_buf[oobsel->eccbytes], mtd->oobsize - oobsel->eccbytes); + else + this->write_buf(mtd, oob_buf, mtd->oobsize); + + /* Send command to actually program the data */ + this->cmdfunc (mtd, cached ? NAND_CMD_CACHEDPROG : NAND_CMD_PAGEPROG, -1, -1); + + if (!cached) { + /* call wait ready function */ + status = this->waitfunc (mtd, this, FL_WRITING); + /* See if device thinks it succeeded */ + if (status & 0x01) { + DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write, page 0x%08x, ", __FUNCTION__, page); + return -EIO; + } + } else { + /* FIXME: Implement cached programming ! */ + /* wait until cache is ready*/ + /* status = this->waitfunc (mtd, this, FL_CACHEDRPG); */ + } + return 0; + } + + #ifdef CONFIG_MTD_NAND_VERIFY_WRITE + /** + * nand_verify_pages - [GENERIC] verify the chip contents after a write + * @mtd: MTD device structure + * @this: NAND chip structure + * @page: startpage inside the chip, must be called with (page & this->pagemask) + * @numpages: number of pages to verify + * @oob_buf: out of band data buffer + * @oobsel: out of band selecttion structre + * @chipnr: number of the current chip + * @oobmode: 1 = full buffer verify, 0 = ecc only + * + * The NAND device assumes that it is always writing to a cleanly erased page. + * Hence, it performs its internal write verification only on bits that + * transitioned from 1 to 0. The device does NOT verify the whole page on a + * byte by byte basis. It is possible that the page was not completely erased + * or the page is becoming unusable due to wear. The read with ECC would catch + * the error later when the ECC page check fails, but we would rather catch + * it early in the page write stage. Better to write no data than invalid data. + */ + static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, + u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode) + { + int i, j, datidx = 0, oobofs = 0, res = -EIO; + int eccsteps = this->eccsteps; + int hweccbytes; + u_char oobdata[64]; + + hweccbytes = (this->options & NAND_HWECC_SYNDROME) ? (oobsel->eccbytes / eccsteps) : 0; + + /* Send command to read back the first page */ + this->cmdfunc (mtd, NAND_CMD_READ0, 0, page); + + for(;;) { + for (j = 0; j < eccsteps; j++) { + /* Loop through and verify the data */ + if (this->verify_buf(mtd, &this->data_poi[datidx], mtd->eccsize)) { + DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page); + goto out; + } + datidx += mtd->eccsize; + /* Have we a hw generator layout ? */ + if (!hweccbytes) + continue; + if (this->verify_buf(mtd, &this->oob_buf[oobofs], hweccbytes)) { + DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page); + goto out; + } + oobofs += hweccbytes; + } + + /* check, if we must compare all data or if we just have to + * compare the ecc bytes + */ + if (oobmode) { + if (this->verify_buf(mtd, &oob_buf[oobofs], mtd->oobsize - hweccbytes * eccsteps)) { + DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page); + goto out; + } + } else { + /* Read always, else autoincrement fails */ + this->read_buf(mtd, oobdata, mtd->oobsize - hweccbytes * eccsteps); + + if (oobsel->useecc != MTD_NANDECC_OFF && !hweccbytes) { + int ecccnt = oobsel->eccbytes; + + for (i = 0; i < ecccnt; i++) { + int idx = oobsel->eccpos[i]; + if (oobdata[idx] != oob_buf[oobofs + idx] ) { + DEBUG (MTD_DEBUG_LEVEL0, + "%s: Failed ECC write " + "verify, page 0x%08x, " "%6i bytes were succesful\n", __FUNCTION__, page, i); + goto out; + } + } + } + } + oobofs += mtd->oobsize - hweccbytes * eccsteps; + page++; + numpages--; + + /* Apply delay or wait for ready/busy pin + * Do this before the AUTOINCR check, so no problems + * arise if a chip which does auto increment + * is marked as NOAUTOINCR by the board driver. + * Do this also before returning, so the chip is + * ready for the next command. + */ + if (!this->dev_ready) + udelay (this->chip_delay); + else + while (!this->dev_ready(mtd)); + + /* All done, return happy */ + if (!numpages) + return 0; + + + /* Check, if the chip supports auto page increment */ + if (!NAND_CANAUTOINCR(this)) + this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page); + } + /* + * Terminate the read command. We come here in case of an error + * So we must issue a reset command. + */ + out: + this->cmdfunc (mtd, NAND_CMD_RESET, -1, -1); + return res; + } + #endif + + /** + * nand_read - [MTD Interface] MTD compability function for nand_read_ecc + * @mtd: MTD device structure + * @from: offset to read from + * @len: number of bytes to read + * @retlen: pointer to variable to store the number of read bytes + * @buf: the databuffer to put data + * + * This function simply calls nand_read_ecc with oob buffer and oobsel = NULL + */ + static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf) + { + return nand_read_ecc (mtd, from, len, retlen, buf, NULL, NULL); + } + + + /** + * nand_read_ecc - [MTD Interface] Read data with ECC + * @mtd: MTD device structure + * @from: offset to read from + * @len: number of bytes to read + * @retlen: pointer to variable to store the number of read bytes + * @buf: the databuffer to put data + * @oob_buf: filesystem supplied oob data buffer + * @oobsel: oob selection structure + * + * NAND read with ECC + */ + static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, + size_t * retlen, u_char * buf, u_char * oob_buf, struct nand_oobinfo *oobsel) + { + int i, j, col, realpage, page, end, ecc, chipnr, sndcmd = 1; + int read = 0, oob = 0, ecc_status = 0, ecc_failed = 0; + struct nand_chip *this = mtd->priv; + u_char *data_poi, *oob_data = oob_buf; + u_char ecc_calc[32]; + u_char ecc_code[32]; + int eccmode, eccsteps; + int *oob_config, datidx; + int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; + int eccbytes; + int compareecc = 1; + int oobreadlen; + + + DEBUG (MTD_DEBUG_LEVEL3, "nand_read_ecc: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + + /* Do not allow reads past end of device */ + if ((from + len) > mtd->size) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: Attempt read beyond end of device\n"); + *retlen = 0; + return -EINVAL; + } + + /* Grab the lock and see if the device is available */ + nand_get_device (this, mtd ,FL_READING); + + /* use userspace supplied oobinfo, if zero */ + if (oobsel == NULL) + oobsel = &mtd->oobinfo; + + /* Autoplace of oob data ? Use the default placement scheme */ + if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) + oobsel = this->autooob; + + eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE; + oob_config = oobsel->eccpos; + + /* Select the NAND device */ + chipnr = (int)(from >> this->chip_shift); + this->select_chip(mtd, chipnr); + + /* First we calculate the starting page */ + realpage = (int) (from >> this->page_shift); + page = realpage & this->pagemask; + + /* Get raw starting column */ + col = from & (mtd->oobblock - 1); + + end = mtd->oobblock; + ecc = this->eccsize; + eccbytes = this->eccbytes; + + if ((eccmode == NAND_ECC_NONE) || (this->options & NAND_HWECC_SYNDROME)) + compareecc = 0; + + oobreadlen = mtd->oobsize; + if (this->options & NAND_HWECC_SYNDROME) + oobreadlen -= oobsel->eccbytes; + + /* Loop until all data read */ + while (read < len) { + + int aligned = (!col && (len - read) >= end); + /* + * If the read is not page aligned, we have to read into data buffer + * due to ecc, else we read into return buffer direct + */ + if (aligned) + data_poi = &buf[read]; + else + data_poi = this->data_buf; + + /* Check, if we have this page in the buffer + * + * FIXME: Make it work when we must provide oob data too, + * check the usage of data_buf oob field + */ + if (realpage == this->pagebuf && !oob_buf) { + /* aligned read ? */ + if (aligned) + memcpy (data_poi, this->data_buf, end); + goto readdata; + } + + /* Check, if we must send the read command */ + if (sndcmd) { + this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page); + sndcmd = 0; + } + + /* get oob area, if we have no oob buffer from fs-driver */ + if (!oob_buf || oobsel->useecc == MTD_NANDECC_AUTOPLACE || + oobsel->useecc == MTD_NANDECC_AUTOPL_USR) + oob_data = &this->data_buf[end]; + + eccsteps = this->eccsteps; + + switch (eccmode) { + case NAND_ECC_NONE: { /* No ECC, Read in a page */ + /* XXX U-BOOT XXX */ + #if 0 + static unsigned long lastwhinge = 0; + if ((lastwhinge / HZ) != (jiffies / HZ)) { + printk (KERN_WARNING "Reading data from NAND FLASH without ECC is not recommended\n"); + lastwhinge = jiffies; + } + #else + puts("Reading data from NAND FLASH without ECC is not recommended\n"); + #endif + this->read_buf(mtd, data_poi, end); + break; + } + + case NAND_ECC_SOFT: /* Software ECC 3/256: Read in a page + oob data */ + this->read_buf(mtd, data_poi, end); + for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=3, datidx += ecc) + this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]); + break; + + default: + for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=eccbytes, datidx += ecc) { + this->enable_hwecc(mtd, NAND_ECC_READ); + this->read_buf(mtd, &data_poi[datidx], ecc); + + /* HW ecc with syndrome calculation must read the + * syndrome from flash immidiately after the data */ + if (!compareecc) { + /* Some hw ecc generators need to know when the + * syndrome is read from flash */ + this->enable_hwecc(mtd, NAND_ECC_READSYN); + this->read_buf(mtd, &oob_data[i], eccbytes); + /* We calc error correction directly, it checks the hw + * generator for an error, reads back the syndrome and + * does the error correction on the fly */ + if (this->correct_data(mtd, &data_poi[datidx], &oob_data[i], &ecc_code[i]) == -1) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " + "Failed ECC read, page 0x%08x on chip %d\n", page, chipnr); + ecc_failed++; + } + } else { + this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]); + } + } + break; + } + + /* read oobdata */ + this->read_buf(mtd, &oob_data[mtd->oobsize - oobreadlen], oobreadlen); + + /* Skip ECC check, if not requested (ECC_NONE or HW_ECC with syndromes) */ + if (!compareecc) + goto readoob; + + /* Pick the ECC bytes out of the oob data */ + for (j = 0; j < oobsel->eccbytes; j++) + ecc_code[j] = oob_data[oob_config[j]]; + + /* correct data, if neccecary */ + for (i = 0, j = 0, datidx = 0; i < this->eccsteps; i++, datidx += ecc) { + ecc_status = this->correct_data(mtd, &data_poi[datidx], &ecc_code[j], &ecc_calc[j]); + + /* Get next chunk of ecc bytes */ + j += eccbytes; + + /* Check, if we have a fs supplied oob-buffer, + * This is the legacy mode. Used by YAFFS1 + * Should go away some day + */ + if (oob_buf && oobsel->useecc == MTD_NANDECC_PLACE) { + int *p = (int *)(&oob_data[mtd->oobsize]); + p[i] = ecc_status; + } + + if (ecc_status == -1) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x\n", page); + ecc_failed++; + } + } + + readoob: + /* check, if we have a fs supplied oob-buffer */ + if (oob_buf) { + /* without autoplace. Legacy mode used by YAFFS1 */ + switch(oobsel->useecc) { + case MTD_NANDECC_AUTOPLACE: + case MTD_NANDECC_AUTOPL_USR: + /* Walk through the autoplace chunks */ + for (i = 0, j = 0; j < mtd->oobavail; i++) { + int from = oobsel->oobfree[i][0]; + int num = oobsel->oobfree[i][1]; + memcpy(&oob_buf[oob], &oob_data[from], num); + j+= num; + } + oob += mtd->oobavail; + break; + case MTD_NANDECC_PLACE: + /* YAFFS1 legacy mode */ + oob_data += this->eccsteps * sizeof (int); + default: + oob_data += mtd->oobsize; + } + } + readdata: + /* Partial page read, transfer data into fs buffer */ + if (!aligned) { + for (j = col; j < end && read < len; j++) + buf[read++] = data_poi[j]; + this->pagebuf = realpage; + } else + read += mtd->oobblock; + + /* Apply delay or wait for ready/busy pin + * Do this before the AUTOINCR check, so no problems + * arise if a chip which does auto increment + * is marked as NOAUTOINCR by the board driver. + */ + if (!this->dev_ready) + udelay (this->chip_delay); + else + while (!this->dev_ready(mtd)); + + if (read == len) + break; + + /* For subsequent reads align to page boundary. */ + col = 0; + /* Increment page address */ + realpage++; + + page = realpage & this->pagemask; + /* Check, if we cross a chip boundary */ + if (!page) { + chipnr++; + this->select_chip(mtd, -1); + this->select_chip(mtd, chipnr); + } + /* Check, if the chip supports auto page increment + * or if we have hit a block boundary. + */ + if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) + sndcmd = 1; + } + + /* Deselect and wake up anyone waiting on the device */ + nand_release_device(mtd); + + /* + * Return success, if no ECC failures, else -EBADMSG + * fs driver will take care of that, because + * retlen == desired len and result == -EBADMSG + */ + *retlen = read; + return ecc_failed ? -EBADMSG : 0; + } + + /** + * nand_read_oob - [MTD Interface] NAND read out-of-band + * @mtd: MTD device structure + * @from: offset to read from + * @len: number of bytes to read + * @retlen: pointer to variable to store the number of read bytes + * @buf: the databuffer to put data + * + * NAND read out-of-band data from the spare area + */ + static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf) + { + int i, col, page, chipnr; + struct nand_chip *this = mtd->priv; + int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; + + DEBUG (MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); + + /* Shift to get page */ + page = (int)(from >> this->page_shift); + chipnr = (int)(from >> this->chip_shift); + + /* Mask to get column */ + col = from & (mtd->oobsize - 1); + + /* Initialize return length value */ + *retlen = 0; + + /* Do not allow reads past end of device */ + if ((from + len) > mtd->size) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: Attempt read beyond end of device\n"); + *retlen = 0; + return -EINVAL; + } + + /* Grab the lock and see if the device is available */ + nand_get_device (this, mtd , FL_READING); + + /* Select the NAND device */ + this->select_chip(mtd, chipnr); + + /* Send the read command */ + this->cmdfunc (mtd, NAND_CMD_READOOB, col, page & this->pagemask); + /* + * Read the data, if we read more than one page + * oob data, let the device transfer the data ! + */ + i = 0; + while (i < len) { + int thislen = mtd->oobsize - col; + thislen = min_t(int, thislen, len); + this->read_buf(mtd, &buf[i], thislen); + i += thislen; + + /* Apply delay or wait for ready/busy pin + * Do this before the AUTOINCR check, so no problems + * arise if a chip which does auto increment + * is marked as NOAUTOINCR by the board driver. + */ + if (!this->dev_ready) + udelay (this->chip_delay); + else + while (!this->dev_ready(mtd)); + + /* Read more ? */ + if (i < len) { + page++; + col = 0; + + /* Check, if we cross a chip boundary */ + if (!(page & this->pagemask)) { + chipnr++; + this->select_chip(mtd, -1); + this->select_chip(mtd, chipnr); + } + + /* Check, if the chip supports auto page increment + * or if we have hit a block boundary. + */ + if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) { + /* For subsequent page reads set offset to 0 */ + this->cmdfunc (mtd, NAND_CMD_READOOB, 0x0, page & this->pagemask); + } + } + } + + /* Deselect and wake up anyone waiting on the device */ + nand_release_device(mtd); + + /* Return happy */ + *retlen = len; + return 0; + } + + /** + * nand_read_raw - [GENERIC] Read raw data including oob into buffer + * @mtd: MTD device structure + * @buf: temporary buffer + * @from: offset to read from + * @len: number of bytes to read + * @ooblen: number of oob data bytes to read + * + * Read raw data including oob into buffer + */ + int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen) + { + struct nand_chip *this = mtd->priv; + int page = (int) (from >> this->page_shift); + int chip = (int) (from >> this->chip_shift); + int sndcmd = 1; + int cnt = 0; + int pagesize = mtd->oobblock + mtd->oobsize; + int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; + + /* Do not allow reads past end of device */ + if ((from + len) > mtd->size) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_read_raw: Attempt read beyond end of device\n"); + return -EINVAL; + } + + /* Grab the lock and see if the device is available */ + nand_get_device (this, mtd , FL_READING); + + this->select_chip (mtd, chip); + + /* Add requested oob length */ + len += ooblen; + + while (len) { + if (sndcmd) + this->cmdfunc (mtd, NAND_CMD_READ0, 0, page & this->pagemask); + sndcmd = 0; + + this->read_buf (mtd, &buf[cnt], pagesize); + + len -= pagesize; + cnt += pagesize; + page++; + + if (!this->dev_ready) + udelay (this->chip_delay); + else + while (!this->dev_ready(mtd)); + + /* Check, if the chip supports auto page increment */ + if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) + sndcmd = 1; + } + + /* Deselect and wake up anyone waiting on the device */ + nand_release_device(mtd); + return 0; + } + + + /** + * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer + * @mtd: MTD device structure + * @fsbuf: buffer given by fs driver + * @oobsel: out of band selection structre + * @autoplace: 1 = place given buffer into the oob bytes + * @numpages: number of pages to prepare + * + * Return: + * 1. Filesystem buffer available and autoplacement is off, + * return filesystem buffer + * 2. No filesystem buffer or autoplace is off, return internal + * buffer + * 3. Filesystem buffer is given and autoplace selected + * put data from fs buffer into internal buffer and + * retrun internal buffer + * + * Note: The internal buffer is filled with 0xff. This must + * be done only once, when no autoplacement happens + * Autoplacement sets the buffer dirty flag, which + * forces the 0xff fill before using the buffer again. + * + */ + static u_char * nand_prepare_oobbuf (struct mtd_info *mtd, u_char *fsbuf, struct nand_oobinfo *oobsel, + int autoplace, int numpages) + { + struct nand_chip *this = mtd->priv; + int i, len, ofs; + + /* Zero copy fs supplied buffer */ + if (fsbuf && !autoplace) + return fsbuf; + + /* Check, if the buffer must be filled with ff again */ + if (this->oobdirty) { + memset (this->oob_buf, 0xff, + mtd->oobsize << (this->phys_erase_shift - this->page_shift)); + this->oobdirty = 0; + } + + /* If we have no autoplacement or no fs buffer use the internal one */ + if (!autoplace || !fsbuf) + return this->oob_buf; + + /* Walk through the pages and place the data */ + this->oobdirty = 1; + ofs = 0; + while (numpages--) { + for (i = 0, len = 0; len < mtd->oobavail; i++) { + int to = ofs + oobsel->oobfree[i][0]; + int num = oobsel->oobfree[i][1]; + memcpy (&this->oob_buf[to], fsbuf, num); + len += num; + fsbuf += num; + } + ofs += mtd->oobavail; + } + return this->oob_buf; + } + + #define NOTALIGNED(x) (x & (mtd->oobblock-1)) != 0 + + /** + * nand_write - [MTD Interface] compability function for nand_write_ecc + * @mtd: MTD device structure + * @to: offset to write to + * @len: number of bytes to write + * @retlen: pointer to variable to store the number of written bytes + * @buf: the data to write + * + * This function simply calls nand_write_ecc with oob buffer and oobsel = NULL + * + */ + static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf) + { + return (nand_write_ecc (mtd, to, len, retlen, buf, NULL, NULL)); + } + + /** + * nand_write_ecc - [MTD Interface] NAND write with ECC + * @mtd: MTD device structure + * @to: offset to write to + * @len: number of bytes to write + * @retlen: pointer to variable to store the number of written bytes + * @buf: the data to write + * @eccbuf: filesystem supplied oob data buffer + * @oobsel: oob selection structure + * + * NAND write with ECC + */ + static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, + size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel) + { + int startpage, page, ret = -EIO, oob = 0, written = 0, chipnr; + int autoplace = 0, numpages, totalpages; + struct nand_chip *this = mtd->priv; + u_char *oobbuf, *bufstart; + int ppblock = (1 << (this->phys_erase_shift - this->page_shift)); + + DEBUG (MTD_DEBUG_LEVEL3, "nand_write_ecc: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); + + /* Initialize retlen, in case of early exit */ + *retlen = 0; + + /* Do not allow write past end of device */ + if ((to + len) > mtd->size) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: Attempt to write past end of page\n"); + return -EINVAL; + } + + /* reject writes, which are not page aligned */ + if (NOTALIGNED (to) || NOTALIGNED(len)) { + printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n"); + return -EINVAL; + } + + /* Grab the lock and see if the device is available */ + nand_get_device (this, mtd, FL_WRITING); + + /* Calculate chipnr */ + chipnr = (int)(to >> this->chip_shift); + /* Select the NAND device */ + this->select_chip(mtd, chipnr); + + /* Check, if it is write protected */ + if (nand_check_wp(mtd)) + goto out; + + /* if oobsel is NULL, use chip defaults */ + if (oobsel == NULL) + oobsel = &mtd->oobinfo; + + /* Autoplace of oob data ? Use the default placement scheme */ + if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) { + oobsel = this->autooob; + autoplace = 1; + } + if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR) + autoplace = 1; + + /* Setup variables and oob buffer */ + totalpages = len >> this->page_shift; + page = (int) (to >> this->page_shift); + /* Invalidate the page cache, if we write to the cached page */ + if (page <= this->pagebuf && this->pagebuf < (page + totalpages)) + this->pagebuf = -1; + + /* Set it relative to chip */ + page &= this->pagemask; + startpage = page; + /* Calc number of pages we can write in one go */ + numpages = min (ppblock - (startpage & (ppblock - 1)), totalpages); + oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, autoplace, numpages); + bufstart = (u_char *)buf; + + /* Loop until all data is written */ + while (written < len) { + + this->data_poi = (u_char*) &buf[written]; + /* Write one page. If this is the last page to write + * or the last page in this block, then use the + * real pageprogram command, else select cached programming + * if supported by the chip. + */ + ret = nand_write_page (mtd, this, page, &oobbuf[oob], oobsel, (--numpages > 0)); + if (ret) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: write_page failed %d\n", ret); + goto out; + } + /* Next oob page */ + oob += mtd->oobsize; + /* Update written bytes count */ + written += mtd->oobblock; + if (written == len) + goto cmp; + + /* Increment page address */ + page++; + + /* Have we hit a block boundary ? Then we have to verify and + * if verify is ok, we have to setup the oob buffer for + * the next pages. + */ + if (!(page & (ppblock - 1))){ + int ofs; + this->data_poi = bufstart; + ret = nand_verify_pages (mtd, this, startpage, + page - startpage, + oobbuf, oobsel, chipnr, (eccbuf != NULL)); + if (ret) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); + goto out; + } + *retlen = written; + + ofs = autoplace ? mtd->oobavail : mtd->oobsize; + if (eccbuf) + eccbuf += (page - startpage) * ofs; + totalpages -= page - startpage; + numpages = min (totalpages, ppblock); + page &= this->pagemask; + startpage = page; + oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, + autoplace, numpages); + /* Check, if we cross a chip boundary */ + if (!page) { + chipnr++; + this->select_chip(mtd, -1); + this->select_chip(mtd, chipnr); + } + } + } + /* Verify the remaining pages */ + cmp: + this->data_poi = bufstart; + ret = nand_verify_pages (mtd, this, startpage, totalpages, + oobbuf, oobsel, chipnr, (eccbuf != NULL)); + if (!ret) + *retlen = written; + else + DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); + + out: + /* Deselect and wake up anyone waiting on the device */ + nand_release_device(mtd); + + return ret; + } + + + /** + * nand_write_oob - [MTD Interface] NAND write out-of-band + * @mtd: MTD device structure + * @to: offset to write to + * @len: number of bytes to write + * @retlen: pointer to variable to store the number of written bytes + * @buf: the data to write + * + * NAND write out-of-band + */ + static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf) + { + int column, page, status, ret = -EIO, chipnr; + struct nand_chip *this = mtd->priv; + + DEBUG (MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); + + /* Shift to get page */ + page = (int) (to >> this->page_shift); + chipnr = (int) (to >> this->chip_shift); + + /* Mask to get column */ + column = to & (mtd->oobsize - 1); + + /* Initialize return length value */ + *retlen = 0; + + /* Do not allow write past end of page */ + if ((column + len) > mtd->oobsize) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: Attempt to write past end of page\n"); + return -EINVAL; + } + + /* Grab the lock and see if the device is available */ + nand_get_device (this, mtd, FL_WRITING); + + /* Select the NAND device */ + this->select_chip(mtd, chipnr); + + /* Reset the chip. Some chips (like the Toshiba TC5832DC found + in one of my DiskOnChip 2000 test units) will clear the whole + data page too if we don't do this. I have no clue why, but + I seem to have 'fixed' it in the doc2000 driver in + August 1999. dwmw2. */ + this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1); + + /* Check, if it is write protected */ + if (nand_check_wp(mtd)) + goto out; + + /* Invalidate the page cache, if we write to the cached page */ + if (page == this->pagebuf) + this->pagebuf = -1; + + if (NAND_MUST_PAD(this)) { + /* Write out desired data */ + this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask); + /* prepad 0xff for partial programming */ + this->write_buf(mtd, ffchars, column); + /* write data */ + this->write_buf(mtd, buf, len); + /* postpad 0xff for partial programming */ + this->write_buf(mtd, ffchars, mtd->oobsize - (len+column)); + } else { + /* Write out desired data */ + this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock + column, page & this->pagemask); + /* write data */ + this->write_buf(mtd, buf, len); + } + /* Send command to program the OOB data */ + this->cmdfunc (mtd, NAND_CMD_PAGEPROG, -1, -1); + + status = this->waitfunc (mtd, this, FL_WRITING); + + /* See if device thinks it succeeded */ + if (status & 0x01) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write, page 0x%08x\n", page); + ret = -EIO; + goto out; + } + /* Return happy */ + *retlen = len; + + #ifdef CONFIG_MTD_NAND_VERIFY_WRITE + /* Send command to read back the data */ + this->cmdfunc (mtd, NAND_CMD_READOOB, column, page & this->pagemask); + + if (this->verify_buf(mtd, buf, len)) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: " "Failed write verify, page 0x%08x\n", page); + ret = -EIO; + goto out; + } + #endif + ret = 0; + out: + /* Deselect and wake up anyone waiting on the device */ + nand_release_device(mtd); + + return ret; + } + + /* XXX U-BOOT XXX */ + #if 0 + /** + * nand_writev - [MTD Interface] compabilty function for nand_writev_ecc + * @mtd: MTD device structure + * @vecs: the iovectors to write + * @count: number of vectors + * @to: offset to write to + * @retlen: pointer to variable to store the number of written bytes + * + * NAND write with kvec. This just calls the ecc function + */ + static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, + loff_t to, size_t * retlen) + { + return (nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, NULL)); + } + + /** + * nand_writev_ecc - [MTD Interface] write with iovec with ecc + * @mtd: MTD device structure + * @vecs: the iovectors to write + * @count: number of vectors + * @to: offset to write to + * @retlen: pointer to variable to store the number of written bytes + * @eccbuf: filesystem supplied oob data buffer + * @oobsel: oob selection structure + * + * NAND write with iovec with ecc + */ + static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, + loff_t to, size_t * retlen, u_char *eccbuf, struct nand_oobinfo *oobsel) + { + int i, page, len, total_len, ret = -EIO, written = 0, chipnr; + int oob, numpages, autoplace = 0, startpage; + struct nand_chip *this = mtd->priv; + int ppblock = (1 << (this->phys_erase_shift - this->page_shift)); + u_char *oobbuf, *bufstart; + + /* Preset written len for early exit */ + *retlen = 0; + + /* Calculate total length of data */ + total_len = 0; + for (i = 0; i < count; i++) + total_len += (int) vecs[i].iov_len; + + DEBUG (MTD_DEBUG_LEVEL3, + "nand_writev: to = 0x%08x, len = %i, count = %ld\n", (unsigned int) to, (unsigned int) total_len, count); + + /* Do not allow write past end of page */ + if ((to + total_len) > mtd->size) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_writev: Attempted write past end of device\n"); + return -EINVAL; + } + + /* reject writes, which are not page aligned */ + if (NOTALIGNED (to) || NOTALIGNED(total_len)) { + printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n"); + return -EINVAL; + } + + /* Grab the lock and see if the device is available */ + nand_get_device (this, mtd, FL_WRITING); + + /* Get the current chip-nr */ + chipnr = (int) (to >> this->chip_shift); + /* Select the NAND device */ + this->select_chip(mtd, chipnr); + + /* Check, if it is write protected */ + if (nand_check_wp(mtd)) + goto out; + + /* if oobsel is NULL, use chip defaults */ + if (oobsel == NULL) + oobsel = &mtd->oobinfo; + + /* Autoplace of oob data ? Use the default placement scheme */ + if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) { + oobsel = this->autooob; + autoplace = 1; + } + if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR) + autoplace = 1; + + /* Setup start page */ + page = (int) (to >> this->page_shift); + /* Invalidate the page cache, if we write to the cached page */ + if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift)) + this->pagebuf = -1; + + startpage = page & this->pagemask; + + /* Loop until all kvec' data has been written */ + len = 0; + while (count) { + /* If the given tuple is >= pagesize then + * write it out from the iov + */ + if ((vecs->iov_len - len) >= mtd->oobblock) { + /* Calc number of pages we can write + * out of this iov in one go */ + numpages = (vecs->iov_len - len) >> this->page_shift; + /* Do not cross block boundaries */ + numpages = min (ppblock - (startpage & (ppblock - 1)), numpages); + oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages); + bufstart = (u_char *)vecs->iov_base; + bufstart += len; + this->data_poi = bufstart; + oob = 0; + for (i = 1; i <= numpages; i++) { + /* Write one page. If this is the last page to write + * then use the real pageprogram command, else select + * cached programming if supported by the chip. + */ + ret = nand_write_page (mtd, this, page & this->pagemask, + &oobbuf[oob], oobsel, i != numpages); + if (ret) + goto out; + this->data_poi += mtd->oobblock; + len += mtd->oobblock; + oob += mtd->oobsize; + page++; + } + /* Check, if we have to switch to the next tuple */ + if (len >= (int) vecs->iov_len) { + vecs++; + len = 0; + count--; + } + } else { + /* We must use the internal buffer, read data out of each + * tuple until we have a full page to write + */ + int cnt = 0; + while (cnt < mtd->oobblock) { + if (vecs->iov_base != NULL && vecs->iov_len) + this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++]; + /* Check, if we have to switch to the next tuple */ + if (len >= (int) vecs->iov_len) { + vecs++; + len = 0; + count--; + } + } + this->pagebuf = page; + this->data_poi = this->data_buf; + bufstart = this->data_poi; + numpages = 1; + oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages); + ret = nand_write_page (mtd, this, page & this->pagemask, + oobbuf, oobsel, 0); + if (ret) + goto out; + page++; + } + + this->data_poi = bufstart; + ret = nand_verify_pages (mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0); + if (ret) + goto out; + + written += mtd->oobblock * numpages; + /* All done ? */ + if (!count) + break; + + startpage = page & this->pagemask; + /* Check, if we cross a chip boundary */ + if (!startpage) { + chipnr++; + this->select_chip(mtd, -1); + this->select_chip(mtd, chipnr); + } + } + ret = 0; + out: + /* Deselect and wake up anyone waiting on the device */ + nand_release_device(mtd); + + *retlen = written; + return ret; + } + #endif + + /** + * single_erease_cmd - [GENERIC] NAND standard block erase command function + * @mtd: MTD device structure + * @page: the page address of the block which will be erased + * + * Standard erase command for NAND chips + */ + static void single_erase_cmd (struct mtd_info *mtd, int page) + { + struct nand_chip *this = mtd->priv; + /* Send commands to erase a block */ + this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page); + this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1); + } + + /** + * multi_erease_cmd - [GENERIC] AND specific block erase command function + * @mtd: MTD device structure + * @page: the page address of the block which will be erased + * + * AND multi block erase command function + * Erase 4 consecutive blocks + */ + static void multi_erase_cmd (struct mtd_info *mtd, int page) + { + struct nand_chip *this = mtd->priv; + /* Send commands to erase a block */ + this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++); + this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++); + this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++); + this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page); + this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1); + } + + /** + * nand_erase - [MTD Interface] erase block(s) + * @mtd: MTD device structure + * @instr: erase instruction + * + * Erase one ore more blocks + */ + static int nand_erase (struct mtd_info *mtd, struct erase_info *instr) + { + return nand_erase_nand (mtd, instr, 0); + } + + /** + * nand_erase_intern - [NAND Interface] erase block(s) + * @mtd: MTD device structure + * @instr: erase instruction + * @allowbbt: allow erasing the bbt area + * + * Erase one ore more blocks + */ + int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt) + { + int page, len, status, pages_per_block, ret, chipnr; + struct nand_chip *this = mtd->priv; + + DEBUG (MTD_DEBUG_LEVEL3, + "nand_erase: start = 0x%08x, len = %i\n", (unsigned int) instr->addr, (unsigned int) instr->len); + + /* Start address must align on block boundary */ + if (instr->addr & ((1 << this->phys_erase_shift) - 1)) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Unaligned address\n"); + return -EINVAL; + } + + /* Length must align on block boundary */ + if (instr->len & ((1 << this->phys_erase_shift) - 1)) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Length not block aligned\n"); + return -EINVAL; + } + + /* Do not allow erase past end of device */ + if ((instr->len + instr->addr) > mtd->size) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Erase past end of device\n"); + return -EINVAL; + } + + instr->fail_addr = 0xffffffff; + + /* Grab the lock and see if the device is available */ + nand_get_device (this, mtd, FL_ERASING); + + /* Shift to get first page */ + page = (int) (instr->addr >> this->page_shift); + chipnr = (int) (instr->addr >> this->chip_shift); + + /* Calculate pages in each block */ + pages_per_block = 1 << (this->phys_erase_shift - this->page_shift); + + /* Select the NAND device */ + this->select_chip(mtd, chipnr); + + /* Check the WP bit */ + /* Check, if it is write protected */ + if (nand_check_wp(mtd)) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Device is write protected!!!\n"); + instr->state = MTD_ERASE_FAILED; + goto erase_exit; + } + + /* Loop through the pages */ + len = instr->len; + + instr->state = MTD_ERASING; + + while (len) { + /* Check if we have a bad block, we do not erase bad blocks ! */ + if (nand_block_checkbad(mtd, ((loff_t) page) << this->page_shift, 0, allowbbt)) { + printk (KERN_WARNING "nand_erase: attempt to erase a bad block at page 0x%08x\n", page); + instr->state = MTD_ERASE_FAILED; + goto erase_exit; + } + + /* Invalidate the page cache, if we erase the block which contains + the current cached page */ + if (page <= this->pagebuf && this->pagebuf < (page + pages_per_block)) + this->pagebuf = -1; + + this->erase_cmd (mtd, page & this->pagemask); + + status = this->waitfunc (mtd, this, FL_ERASING); + + /* See if block erase succeeded */ + if (status & 0x01) { + DEBUG (MTD_DEBUG_LEVEL0, "nand_erase: " "Failed erase, page 0x%08x\n", page); + instr->state = MTD_ERASE_FAILED; + instr->fail_addr = (page << this->page_shift); + goto erase_exit; + } + + /* Increment page address and decrement length */ + len -= (1 << this->phys_erase_shift); + page += pages_per_block; + + /* Check, if we cross a chip boundary */ + if (len && !(page & this->pagemask)) { + chipnr++; + this->select_chip(mtd, -1); + this->select_chip(mtd, chipnr); + } + } + instr->state = MTD_ERASE_DONE; + + erase_exit: + + ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; + /* Do call back function */ + if (!ret) + mtd_erase_callback(instr); + + /* Deselect and wake up anyone waiting on the device */ + nand_release_device(mtd); + + /* Return more or less happy */ + return ret; + } + + /** + * nand_sync - [MTD Interface] sync + * @mtd: MTD device structure + * + * Sync is actually a wait for chip ready function + */ + static void nand_sync (struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + + DEBUG (MTD_DEBUG_LEVEL3, "nand_sync: called\n"); + + /* Grab the lock and see if the device is available */ + nand_get_device (this, mtd, FL_SYNCING); + /* Release it and go back */ + nand_release_device (mtd); + } + + + /** + * nand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad + * @mtd: MTD device structure + * @ofs: offset relative to mtd start + */ + static int nand_block_isbad (struct mtd_info *mtd, loff_t ofs) + { + /* Check for invalid offset */ + if (ofs > mtd->size) + return -EINVAL; + + return nand_block_checkbad (mtd, ofs, 1, 0); + } + + /** + * nand_block_markbad - [MTD Interface] Mark the block at the given offset as bad + * @mtd: MTD device structure + * @ofs: offset relative to mtd start + */ + static int nand_block_markbad (struct mtd_info *mtd, loff_t ofs) + { + struct nand_chip *this = mtd->priv; + int ret; + + if ((ret = nand_block_isbad(mtd, ofs))) { + /* If it was bad already, return success and do nothing. */ + if (ret > 0) + return 0; + return ret; + } + + return this->block_markbad(mtd, ofs); + } + + /** + * nand_scan - [NAND Interface] Scan for the NAND device + * @mtd: MTD device structure + * @maxchips: Number of chips to scan for + * + * This fills out all the not initialized function pointers + * with the defaults. + * The flash ID is read and the mtd/chip structures are + * filled with the appropriate values. Buffers are allocated if + * they are not provided by the board driver + * + */ + int nand_scan (struct mtd_info *mtd, int maxchips) + { + int i, j, nand_maf_id, nand_dev_id, busw; + struct nand_chip *this = mtd->priv; + + /* Get buswidth to select the correct functions*/ + busw = this->options & NAND_BUSWIDTH_16; + + /* check for proper chip_delay setup, set 20us if not */ + if (!this->chip_delay) + this->chip_delay = 20; + + /* check, if a user supplied command function given */ + if (this->cmdfunc == NULL) + this->cmdfunc = nand_command; + + /* check, if a user supplied wait function given */ + if (this->waitfunc == NULL) + this->waitfunc = nand_wait; + + if (!this->select_chip) + this->select_chip = nand_select_chip; + if (!this->write_byte) + this->write_byte = busw ? nand_write_byte16 : nand_write_byte; + if (!this->read_byte) + this->read_byte = busw ? nand_read_byte16 : nand_read_byte; + if (!this->write_word) + this->write_word = nand_write_word; + if (!this->read_word) + this->read_word = nand_read_word; + if (!this->block_bad) + this->block_bad = nand_block_bad; + if (!this->block_markbad) + this->block_markbad = nand_default_block_markbad; + if (!this->write_buf) + this->write_buf = busw ? nand_write_buf16 : nand_write_buf; + if (!this->read_buf) + this->read_buf = busw ? nand_read_buf16 : nand_read_buf; + if (!this->verify_buf) + this->verify_buf = busw ? nand_verify_buf16 : nand_verify_buf; + if (!this->scan_bbt) + this->scan_bbt = nand_default_bbt; + + /* Select the device */ + this->select_chip(mtd, 0); + + /* Send the command for reading device ID */ + this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1); + + /* Read manufacturer and device IDs */ + nand_maf_id = this->read_byte(mtd); + nand_dev_id = this->read_byte(mtd); + + /* Print and store flash device information */ + for (i = 0; nand_flash_ids[i].name != NULL; i++) { + + if (nand_dev_id != nand_flash_ids[i].id) + continue; + + if (!mtd->name) mtd->name = nand_flash_ids[i].name; + this->chipsize = nand_flash_ids[i].chipsize << 20; + + /* New devices have all the information in additional id bytes */ + if (!nand_flash_ids[i].pagesize) { + int extid; + /* The 3rd id byte contains non relevant data ATM */ + extid = this->read_byte(mtd); + /* The 4th id byte is the important one */ + extid = this->read_byte(mtd); + /* Calc pagesize */ + mtd->oobblock = 1024 << (extid & 0x3); + extid >>= 2; + /* Calc oobsize */ + mtd->oobsize = (8 << (extid & 0x03)) * (mtd->oobblock / 512); + extid >>= 2; + /* Calc blocksize. Blocksize is multiples of 64KiB */ + mtd->erasesize = (64 * 1024) << (extid & 0x03); + extid >>= 2; + /* Get buswidth information */ + busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0; + + } else { + /* Old devices have this data hardcoded in the + * device id table */ + mtd->erasesize = nand_flash_ids[i].erasesize; + mtd->oobblock = nand_flash_ids[i].pagesize; + mtd->oobsize = mtd->oobblock / 32; + busw = nand_flash_ids[i].options & NAND_BUSWIDTH_16; + } + + /* Check, if buswidth is correct. Hardware drivers should set + * this correct ! */ + if (busw != (this->options & NAND_BUSWIDTH_16)) { + printk (KERN_INFO "NAND device: Manufacturer ID:" + " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, + nand_manuf_ids[i].name , mtd->name); + printk (KERN_WARNING + "NAND bus width %d instead %d bit\n", + (this->options & NAND_BUSWIDTH_16) ? 16 : 8, + busw ? 16 : 8); + this->select_chip(mtd, -1); + return 1; + } + + /* Calculate the address shift from the page size */ + this->page_shift = ffs(mtd->oobblock) - 1; + this->bbt_erase_shift = this->phys_erase_shift = ffs(mtd->erasesize) - 1; + this->chip_shift = ffs(this->chipsize) - 1; + + /* Set the bad block position */ + this->badblockpos = mtd->oobblock > 512 ? + NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS; + + /* Get chip options, preserve non chip based options */ + this->options &= ~NAND_CHIPOPTIONS_MSK; + this->options |= nand_flash_ids[i].options & NAND_CHIPOPTIONS_MSK; + /* Set this as a default. Board drivers can override it, if neccecary */ + this->options |= NAND_NO_AUTOINCR; + /* Check if this is a not a samsung device. Do not clear the options + * for chips which are not having an extended id. + */ + if (nand_maf_id != NAND_MFR_SAMSUNG && !nand_flash_ids[i].pagesize) + this->options &= ~NAND_SAMSUNG_LP_OPTIONS; + + /* Check for AND chips with 4 page planes */ + if (this->options & NAND_4PAGE_ARRAY) + this->erase_cmd = multi_erase_cmd; + else + this->erase_cmd = single_erase_cmd; + + /* Do not replace user supplied command function ! */ + if (mtd->oobblock > 512 && this->cmdfunc == nand_command) + this->cmdfunc = nand_command_lp; + + /* Try to identify manufacturer */ + for (j = 0; nand_manuf_ids[j].id != 0x0; j++) { + if (nand_manuf_ids[j].id == nand_maf_id) + break; + } - printk (KERN_INFO "NAND device: Manufacturer ID:" - " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, - nand_manuf_ids[j].name , nand_flash_ids[i].name); + break; + } + + if (!nand_flash_ids[i].name) { + printk (KERN_WARNING "No NAND device found!!!\n"); + this->select_chip(mtd, -1); + return 1; + } + + for (i=1; i < maxchips; i++) { + this->select_chip(mtd, i); + + /* Send the command for reading device ID */ + this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1); + + /* Read manufacturer and device IDs */ + if (nand_maf_id != this->read_byte(mtd) || + nand_dev_id != this->read_byte(mtd)) + break; + } + if (i > 1) + printk(KERN_INFO "%d NAND chips detected\n", i); + + /* Allocate buffers, if neccecary */ + if (!this->oob_buf) { + size_t len; + len = mtd->oobsize << (this->phys_erase_shift - this->page_shift); + this->oob_buf = kmalloc (len, GFP_KERNEL); + if (!this->oob_buf) { + printk (KERN_ERR "nand_scan(): Cannot allocate oob_buf\n"); + return -ENOMEM; + } + this->options |= NAND_OOBBUF_ALLOC; + } + + if (!this->data_buf) { + size_t len; + len = mtd->oobblock + mtd->oobsize; + this->data_buf = kmalloc (len, GFP_KERNEL); + if (!this->data_buf) { + if (this->options & NAND_OOBBUF_ALLOC) + kfree (this->oob_buf); + printk (KERN_ERR "nand_scan(): Cannot allocate data_buf\n"); + return -ENOMEM; + } + this->options |= NAND_DATABUF_ALLOC; + } + + /* Store the number of chips and calc total size for mtd */ + this->numchips = i; + mtd->size = i * this->chipsize; + /* Convert chipsize to number of pages per chip -1. */ + this->pagemask = (this->chipsize >> this->page_shift) - 1; + /* Preset the internal oob buffer */ + memset(this->oob_buf, 0xff, mtd->oobsize << (this->phys_erase_shift - this->page_shift)); + + /* If no default placement scheme is given, select an + * appropriate one */ + if (!this->autooob) { + /* Select the appropriate default oob placement scheme for + * placement agnostic filesystems */ + switch (mtd->oobsize) { + case 8: + this->autooob = &nand_oob_8; + break; + case 16: + this->autooob = &nand_oob_16; + break; + case 64: + this->autooob = &nand_oob_64; + break; + default: + printk (KERN_WARNING "No oob scheme defined for oobsize %d\n", + mtd->oobsize); + /* BUG(); */ + } + } + + /* The number of bytes available for the filesystem to place fs dependend + * oob data */ + if (this->options & NAND_BUSWIDTH_16) { + mtd->oobavail = mtd->oobsize - (this->autooob->eccbytes + 2); + if (this->autooob->eccbytes & 0x01) + mtd->oobavail--; + } else + mtd->oobavail = mtd->oobsize - (this->autooob->eccbytes + 1); + + /* + * check ECC mode, default to software + * if 3byte/512byte hardware ECC is selected and we have 256 byte pagesize + * fallback to software ECC + */ + this->eccsize = 256; /* set default eccsize */ + this->eccbytes = 3; + + switch (this->eccmode) { + case NAND_ECC_HW12_2048: + if (mtd->oobblock < 2048) { + printk(KERN_WARNING "2048 byte HW ECC not possible on %d byte page size, fallback to SW ECC\n", + mtd->oobblock); + this->eccmode = NAND_ECC_SOFT; + this->calculate_ecc = nand_calculate_ecc; + this->correct_data = nand_correct_data; + } else + this->eccsize = 2048; + break; + + case NAND_ECC_HW3_512: + case NAND_ECC_HW6_512: + case NAND_ECC_HW8_512: + if (mtd->oobblock == 256) { + printk (KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n"); + this->eccmode = NAND_ECC_SOFT; + this->calculate_ecc = nand_calculate_ecc; + this->correct_data = nand_correct_data; + } else + this->eccsize = 512; /* set eccsize to 512 */ + break; + + case NAND_ECC_HW3_256: + break; + + case NAND_ECC_NONE: + printk (KERN_WARNING "NAND_ECC_NONE selected by board driver. This is not recommended !!\n"); + this->eccmode = NAND_ECC_NONE; + break; + + case NAND_ECC_SOFT: + this->calculate_ecc = nand_calculate_ecc; + this->correct_data = nand_correct_data; + break; + + default: + printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode); + /* BUG(); */ + } + + /* Check hardware ecc function availability and adjust number of ecc bytes per + * calculation step + */ + switch (this->eccmode) { + case NAND_ECC_HW12_2048: + this->eccbytes += 4; + case NAND_ECC_HW8_512: + this->eccbytes += 2; + case NAND_ECC_HW6_512: + this->eccbytes += 3; + case NAND_ECC_HW3_512: + case NAND_ECC_HW3_256: + if (this->calculate_ecc && this->correct_data && this->enable_hwecc) + break; + printk (KERN_WARNING "No ECC functions supplied, Hardware ECC not possible\n"); + /* BUG(); */ + } + + mtd->eccsize = this->eccsize; + + /* Set the number of read / write steps for one page to ensure ECC generation */ + switch (this->eccmode) { + case NAND_ECC_HW12_2048: + this->eccsteps = mtd->oobblock / 2048; + break; + case NAND_ECC_HW3_512: + case NAND_ECC_HW6_512: + case NAND_ECC_HW8_512: + this->eccsteps = mtd->oobblock / 512; + break; + case NAND_ECC_HW3_256: + case NAND_ECC_SOFT: + this->eccsteps = mtd->oobblock / 256; + break; + + case NAND_ECC_NONE: + this->eccsteps = 1; + break; + } + + /* XXX U-BOOT XXX */ + #if 0 + /* Initialize state, waitqueue and spinlock */ + this->state = FL_READY; + init_waitqueue_head (&this->wq); + spin_lock_init (&this->chip_lock); + #endif + + /* De-select the device */ + this->select_chip(mtd, -1); + + /* Invalidate the pagebuffer reference */ + this->pagebuf = -1; + + /* Fill in remaining MTD driver data */ + mtd->type = MTD_NANDFLASH; + mtd->flags = MTD_CAP_NANDFLASH | MTD_ECC; + mtd->ecctype = MTD_ECC_SW; + mtd->erase = nand_erase; + mtd->point = NULL; + mtd->unpoint = NULL; + mtd->read = nand_read; + mtd->write = nand_write; + mtd->read_ecc = nand_read_ecc; + mtd->write_ecc = nand_write_ecc; + mtd->read_oob = nand_read_oob; + mtd->write_oob = nand_write_oob; + /* XXX U-BOOT XXX */ + #if 0 + mtd->readv = NULL; + mtd->writev = nand_writev; + mtd->writev_ecc = nand_writev_ecc; + #endif + mtd->sync = nand_sync; + /* XXX U-BOOT XXX */ + #if 0 + mtd->lock = NULL; + mtd->unlock = NULL; + mtd->suspend = NULL; + mtd->resume = NULL; + #endif + mtd->block_isbad = nand_block_isbad; + mtd->block_markbad = nand_block_markbad; + + /* and make the autooob the default one */ + memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo)); + /* XXX U-BOOT XXX */ + #if 0 + mtd->owner = THIS_MODULE; + #endif + /* Build bad block table */ + return this->scan_bbt (mtd); + } + + /** + * nand_release - [NAND Interface] Free resources held by the NAND device + * @mtd: MTD device structure + */ + void nand_release (struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + + #ifdef CONFIG_MTD_PARTITIONS + /* Deregister partitions */ + del_mtd_partitions (mtd); + #endif + /* Deregister the device */ + /* XXX U-BOOT XXX */ + #if 0 + del_mtd_device (mtd); + #endif + /* Free bad block table memory, if allocated */ + if (this->bbt) + kfree (this->bbt); + /* Buffer allocated by nand_scan ? */ + if (this->options & NAND_OOBBUF_ALLOC) + kfree (this->oob_buf); + /* Buffer allocated by nand_scan ? */ + if (this->options & NAND_DATABUF_ALLOC) + kfree (this->data_buf); + } + + #endif ++#endif /* CONFIG_NEW_NAND_CODE */ ++ diff --cc drivers/nand/nand_bbt.c index 0000000000,dfa88a3af6..f4813088b5 mode 000000,100644..100644 --- a/drivers/nand/nand_bbt.c +++ b/drivers/nand/nand_bbt.c @@@ -1,0 -1,1056 +1,1055 @@@ + /* + * drivers/mtd/nand_bbt.c + * + * Overview: + * Bad block table support for the NAND driver + * + * Copyright (C) 2004 Thomas Gleixner (tglx@linutronix.de) + * + * $Id: nand_bbt.c,v 1.28 2004/11/13 10:19:09 gleixner Exp $ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Description: + * + * When nand_scan_bbt is called, then it tries to find the bad block table + * depending on the options in the bbt descriptor(s). If a bbt is found + * then the contents are read and the memory based bbt is created. If a + * mirrored bbt is selected then the mirror is searched too and the + * versions are compared. If the mirror has a greater version number + * than the mirror bbt is used to build the memory based bbt. + * If the tables are not versioned, then we "or" the bad block information. + * If one of the bbt's is out of date or does not exist it is (re)created. + * If no bbt exists at all then the device is scanned for factory marked + * good / bad blocks and the bad block tables are created. + * + * For manufacturer created bbts like the one found on M-SYS DOC devices + * the bbt is searched and read but never created + * + * The autogenerated bad block table is located in the last good blocks + * of the device. The table is mirrored, so it can be updated eventually. + * The table is marked in the oob area with an ident pattern and a version + * number which indicates which of both tables is more up to date. + * + * The table uses 2 bits per block + * 11b: block is good + * 00b: block is factory marked bad + * 01b, 10b: block is marked bad due to wear + * + * The memory bad block table uses the following scheme: + * 00b: block is good + * 01b: block is marked bad due to wear + * 10b: block is reserved (to protect the bbt area) + * 11b: block is factory marked bad + * + * Multichip devices like DOC store the bad block info per floor. + * + * Following assumptions are made: + * - bbts start at a page boundary, if autolocated on a block boundary + * - the space neccecary for a bbt in FLASH does not exceed a block boundary + * + */ + + #include + ++#ifdef CONFIG_NEW_NAND_CODE + #if (CONFIG_COMMANDS & CFG_CMD_NAND) + + #include + #include + #include + #include + + #include + + /** + * check_pattern - [GENERIC] check if a pattern is in the buffer + * @buf: the buffer to search + * @len: the length of buffer to search + * @paglen: the pagelength + * @td: search pattern descriptor + * + * Check for a pattern at the given place. Used to search bad block + * tables and good / bad block identifiers. + * If the SCAN_EMPTY option is set then check, if all bytes except the + * pattern area contain 0xff + * + */ + static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td) + { + int i, end; + uint8_t *p = buf; + + end = paglen + td->offs; + if (td->options & NAND_BBT_SCANEMPTY) { + for (i = 0; i < end; i++) { + if (p[i] != 0xff) + return -1; + } + } + p += end; + + /* Compare the pattern */ + for (i = 0; i < td->len; i++) { + if (p[i] != td->pattern[i]) + return -1; + } + + p += td->len; + end += td->len; + if (td->options & NAND_BBT_SCANEMPTY) { + for (i = end; i < len; i++) { + if (*p++ != 0xff) + return -1; + } + } + return 0; + } + + /** + * read_bbt - [GENERIC] Read the bad block table starting from page + * @mtd: MTD device structure + * @buf: temporary buffer + * @page: the starting page + * @num: the number of bbt descriptors to read + * @bits: number of bits per block + * @offs: offset in the memory table + * @reserved_block_code: Pattern to identify reserved blocks + * + * Read the bad block table starting from page. + * + */ + static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, + int bits, int offs, int reserved_block_code) + { + int res, i, j, act = 0; + struct nand_chip *this = mtd->priv; + size_t retlen, len, totlen; + loff_t from; + uint8_t msk = (uint8_t) ((1 << bits) - 1); + + totlen = (num * bits) >> 3; + from = ((loff_t)page) << this->page_shift; + + while (totlen) { + len = min (totlen, (size_t) (1 << this->bbt_erase_shift)); + res = mtd->read_ecc (mtd, from, len, &retlen, buf, NULL, this->autooob); + if (res < 0) { + if (retlen != len) { + printk (KERN_INFO "nand_bbt: Error reading bad block table\n"); + return res; + } + printk (KERN_WARNING "nand_bbt: ECC error while reading bad block table\n"); + } + + /* Analyse data */ + for (i = 0; i < len; i++) { + uint8_t dat = buf[i]; + for (j = 0; j < 8; j += bits, act += 2) { + uint8_t tmp = (dat >> j) & msk; + if (tmp == msk) + continue; + if (reserved_block_code && + (tmp == reserved_block_code)) { + printk (KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n", + ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); + this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06); + continue; + } + /* Leave it for now, if its matured we can move this + * message to MTD_DEBUG_LEVEL0 */ + printk (KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n", + ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); + /* Factory marked bad or worn out ? */ + if (tmp == 0) + this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06); + else + this->bbt[offs + (act >> 3)] |= 0x1 << (act & 0x06); + } + } + totlen -= len; + from += len; + } + return 0; + } + + /** + * read_abs_bbt - [GENERIC] Read the bad block table starting at a given page + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @chip: read the table for a specific chip, -1 read all chips. + * Applies only if NAND_BBT_PERCHIP option is set + * + * Read the bad block table for all chips starting at a given page + * We assume that the bbt bits are in consecutive order. + */ + static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip) + { + struct nand_chip *this = mtd->priv; + int res = 0, i; + int bits; + + bits = td->options & NAND_BBT_NRBITS_MSK; + if (td->options & NAND_BBT_PERCHIP) { + int offs = 0; + for (i = 0; i < this->numchips; i++) { + if (chip == -1 || chip == i) + res = read_bbt (mtd, buf, td->pages[i], this->chipsize >> this->bbt_erase_shift, bits, offs, td->reserved_block_code); + if (res) + return res; + offs += this->chipsize >> (this->bbt_erase_shift + 2); + } + } else { + res = read_bbt (mtd, buf, td->pages[0], mtd->size >> this->bbt_erase_shift, bits, 0, td->reserved_block_code); + if (res) + return res; + } + return 0; + } + + /** + * read_abs_bbts - [GENERIC] Read the bad block table(s) for all chips starting at a given page + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @md: descriptor for the bad block table mirror + * + * Read the bad block table(s) for all chips starting at a given page + * We assume that the bbt bits are in consecutive order. + * + */ + static int read_abs_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, + struct nand_bbt_descr *md) + { + struct nand_chip *this = mtd->priv; + + /* Read the primary version, if available */ + if (td->options & NAND_BBT_VERSION) { + nand_read_raw (mtd, buf, td->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); + td->version[0] = buf[mtd->oobblock + td->veroffs]; + printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]); + } + + /* Read the mirror version, if available */ + if (md && (md->options & NAND_BBT_VERSION)) { + nand_read_raw (mtd, buf, md->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); + md->version[0] = buf[mtd->oobblock + md->veroffs]; + printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]); + } + + return 1; + } + + /** + * create_bbt - [GENERIC] Create a bad block table by scanning the device + * @mtd: MTD device structure + * @buf: temporary buffer + * @bd: descriptor for the good/bad block search pattern + * @chip: create the table for a specific chip, -1 read all chips. + * Applies only if NAND_BBT_PERCHIP option is set + * + * Create a bad block table by scanning the device + * for the given good/bad block identify pattern + */ + static void create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd, int chip) + { + struct nand_chip *this = mtd->priv; + int i, j, numblocks, len, scanlen; + int startblock; + loff_t from; + size_t readlen, ooblen; + - printk (KERN_INFO "Scanning device for bad blocks\n"); - + if (bd->options & NAND_BBT_SCANALLPAGES) + len = 1 << (this->bbt_erase_shift - this->page_shift); + else { + if (bd->options & NAND_BBT_SCAN2NDPAGE) + len = 2; + else + len = 1; + } + scanlen = mtd->oobblock + mtd->oobsize; + readlen = len * mtd->oobblock; + ooblen = len * mtd->oobsize; + + if (chip == -1) { + /* Note that numblocks is 2 * (real numblocks) here, see i+=2 below as it + * makes shifting and masking less painful */ + numblocks = mtd->size >> (this->bbt_erase_shift - 1); + startblock = 0; + from = 0; + } else { + if (chip >= this->numchips) { + printk (KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n", + chip + 1, this->numchips); + return; + } + numblocks = this->chipsize >> (this->bbt_erase_shift - 1); + startblock = chip * numblocks; + numblocks += startblock; + from = startblock << (this->bbt_erase_shift - 1); + } + + for (i = startblock; i < numblocks;) { + nand_read_raw (mtd, buf, from, readlen, ooblen); + for (j = 0; j < len; j++) { + if (check_pattern (&buf[j * scanlen], scanlen, mtd->oobblock, bd)) { + this->bbt[i >> 3] |= 0x03 << (i & 0x6); - printk (KERN_WARNING "Bad eraseblock %d at 0x%08x\n", - i >> 1, (unsigned int) from); + break; + } + } + i += 2; + from += (1 << this->bbt_erase_shift); + } + } + + /** + * search_bbt - [GENERIC] scan the device for a specific bad block table + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * + * Read the bad block table by searching for a given ident pattern. + * Search is preformed either from the beginning up or from the end of + * the device downwards. The search starts always at the start of a + * block. + * If the option NAND_BBT_PERCHIP is given, each chip is searched + * for a bbt, which contains the bad block information of this chip. + * This is neccecary to provide support for certain DOC devices. + * + * The bbt ident pattern resides in the oob area of the first page + * in a block. + */ + static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td) + { + struct nand_chip *this = mtd->priv; + int i, chips; + int bits, startblock, block, dir; + int scanlen = mtd->oobblock + mtd->oobsize; + int bbtblocks; + + /* Search direction top -> down ? */ + if (td->options & NAND_BBT_LASTBLOCK) { + startblock = (mtd->size >> this->bbt_erase_shift) -1; + dir = -1; + } else { + startblock = 0; + dir = 1; + } + + /* Do we have a bbt per chip ? */ + if (td->options & NAND_BBT_PERCHIP) { + chips = this->numchips; + bbtblocks = this->chipsize >> this->bbt_erase_shift; + startblock &= bbtblocks - 1; + } else { + chips = 1; + bbtblocks = mtd->size >> this->bbt_erase_shift; + } + + /* Number of bits for each erase block in the bbt */ + bits = td->options & NAND_BBT_NRBITS_MSK; + + for (i = 0; i < chips; i++) { + /* Reset version information */ + td->version[i] = 0; + td->pages[i] = -1; + /* Scan the maximum number of blocks */ + for (block = 0; block < td->maxblocks; block++) { + int actblock = startblock + dir * block; + /* Read first page */ + nand_read_raw (mtd, buf, actblock << this->bbt_erase_shift, mtd->oobblock, mtd->oobsize); + if (!check_pattern(buf, scanlen, mtd->oobblock, td)) { + td->pages[i] = actblock << (this->bbt_erase_shift - this->page_shift); + if (td->options & NAND_BBT_VERSION) { + td->version[i] = buf[mtd->oobblock + td->veroffs]; + } + break; + } + } + startblock += this->chipsize >> this->bbt_erase_shift; + } + /* Check, if we found a bbt for each requested chip */ + for (i = 0; i < chips; i++) { + if (td->pages[i] == -1) + printk (KERN_WARNING "Bad block table not found for chip %d\n", i); + else + printk (KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], td->version[i]); + } + return 0; + } + + /** + * search_read_bbts - [GENERIC] scan the device for bad block table(s) + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @md: descriptor for the bad block table mirror + * + * Search and read the bad block table(s) + */ + static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf, + struct nand_bbt_descr *td, struct nand_bbt_descr *md) + { + /* Search the primary table */ + search_bbt (mtd, buf, td); + + /* Search the mirror table */ + if (md) + search_bbt (mtd, buf, md); + + /* Force result check */ + return 1; + } + + + /** + * write_bbt - [GENERIC] (Re)write the bad block table + * + * @mtd: MTD device structure + * @buf: temporary buffer + * @td: descriptor for the bad block table + * @md: descriptor for the bad block table mirror + * @chipsel: selector for a specific chip, -1 for all + * + * (Re)write the bad block table + * + */ + static int write_bbt (struct mtd_info *mtd, uint8_t *buf, + struct nand_bbt_descr *td, struct nand_bbt_descr *md, int chipsel) + { + struct nand_chip *this = mtd->priv; + struct nand_oobinfo oobinfo; + struct erase_info einfo; + int i, j, res, chip = 0; + int bits, startblock, dir, page, offs, numblocks, sft, sftmsk; + int nrchips, bbtoffs, pageoffs; + uint8_t msk[4]; + uint8_t rcode = td->reserved_block_code; + size_t retlen, len = 0; + loff_t to; + + if (!rcode) + rcode = 0xff; + /* Write bad block table per chip rather than per device ? */ + if (td->options & NAND_BBT_PERCHIP) { + numblocks = (int) (this->chipsize >> this->bbt_erase_shift); + /* Full device write or specific chip ? */ + if (chipsel == -1) { + nrchips = this->numchips; + } else { + nrchips = chipsel + 1; + chip = chipsel; + } + } else { + numblocks = (int) (mtd->size >> this->bbt_erase_shift); + nrchips = 1; + } + + /* Loop through the chips */ + for (; chip < nrchips; chip++) { + + /* There was already a version of the table, reuse the page + * This applies for absolute placement too, as we have the + * page nr. in td->pages. + */ + if (td->pages[chip] != -1) { + page = td->pages[chip]; + goto write; + } + + /* Automatic placement of the bad block table */ + /* Search direction top -> down ? */ + if (td->options & NAND_BBT_LASTBLOCK) { + startblock = numblocks * (chip + 1) - 1; + dir = -1; + } else { + startblock = chip * numblocks; + dir = 1; + } + + for (i = 0; i < td->maxblocks; i++) { + int block = startblock + dir * i; + /* Check, if the block is bad */ + switch ((this->bbt[block >> 2] >> (2 * (block & 0x03))) & 0x03) { + case 0x01: + case 0x03: + continue; + } + page = block << (this->bbt_erase_shift - this->page_shift); + /* Check, if the block is used by the mirror table */ + if (!md || md->pages[chip] != page) + goto write; + } + printk (KERN_ERR "No space left to write bad block table\n"); + return -ENOSPC; + write: + + /* Set up shift count and masks for the flash table */ + bits = td->options & NAND_BBT_NRBITS_MSK; + switch (bits) { + case 1: sft = 3; sftmsk = 0x07; msk[0] = 0x00; msk[1] = 0x01; msk[2] = ~rcode; msk[3] = 0x01; break; + case 2: sft = 2; sftmsk = 0x06; msk[0] = 0x00; msk[1] = 0x01; msk[2] = ~rcode; msk[3] = 0x03; break; + case 4: sft = 1; sftmsk = 0x04; msk[0] = 0x00; msk[1] = 0x0C; msk[2] = ~rcode; msk[3] = 0x0f; break; + case 8: sft = 0; sftmsk = 0x00; msk[0] = 0x00; msk[1] = 0x0F; msk[2] = ~rcode; msk[3] = 0xff; break; + default: return -EINVAL; + } + + bbtoffs = chip * (numblocks >> 2); + + to = ((loff_t) page) << this->page_shift; + + memcpy (&oobinfo, this->autooob, sizeof(oobinfo)); + oobinfo.useecc = MTD_NANDECC_PLACEONLY; + + /* Must we save the block contents ? */ + if (td->options & NAND_BBT_SAVECONTENT) { + /* Make it block aligned */ + to &= ~((loff_t) ((1 << this->bbt_erase_shift) - 1)); + len = 1 << this->bbt_erase_shift; + res = mtd->read_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo); + if (res < 0) { + if (retlen != len) { + printk (KERN_INFO "nand_bbt: Error reading block for writing the bad block table\n"); + return res; + } + printk (KERN_WARNING "nand_bbt: ECC error while reading block for writing bad block table\n"); + } + /* Calc the byte offset in the buffer */ + pageoffs = page - (int)(to >> this->page_shift); + offs = pageoffs << this->page_shift; + /* Preset the bbt area with 0xff */ + memset (&buf[offs], 0xff, (size_t)(numblocks >> sft)); + /* Preset the bbt's oob area with 0xff */ + memset (&buf[len + pageoffs * mtd->oobsize], 0xff, + ((len >> this->page_shift) - pageoffs) * mtd->oobsize); + if (td->options & NAND_BBT_VERSION) { + buf[len + (pageoffs * mtd->oobsize) + td->veroffs] = td->version[chip]; + } + } else { + /* Calc length */ + len = (size_t) (numblocks >> sft); + /* Make it page aligned ! */ + len = (len + (mtd->oobblock-1)) & ~(mtd->oobblock-1); + /* Preset the buffer with 0xff */ + memset (buf, 0xff, len + (len >> this->page_shift) * mtd->oobsize); + offs = 0; + /* Pattern is located in oob area of first page */ + memcpy (&buf[len + td->offs], td->pattern, td->len); + if (td->options & NAND_BBT_VERSION) { + buf[len + td->veroffs] = td->version[chip]; + } + } + + /* walk through the memory table */ + for (i = 0; i < numblocks; ) { + uint8_t dat; + dat = this->bbt[bbtoffs + (i >> 2)]; + for (j = 0; j < 4; j++ , i++) { + int sftcnt = (i << (3 - sft)) & sftmsk; + /* Do not store the reserved bbt blocks ! */ + buf[offs + (i >> sft)] &= ~(msk[dat & 0x03] << sftcnt); + dat >>= 2; + } + } + + memset (&einfo, 0, sizeof (einfo)); + einfo.mtd = mtd; + einfo.addr = (unsigned long) to; + einfo.len = 1 << this->bbt_erase_shift; + res = nand_erase_nand (mtd, &einfo, 1); + if (res < 0) { + printk (KERN_WARNING "nand_bbt: Error during block erase: %d\n", res); + return res; + } + + res = mtd->write_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo); + if (res < 0) { + printk (KERN_WARNING "nand_bbt: Error while writing bad block table %d\n", res); + return res; + } + printk (KERN_DEBUG "Bad block table written to 0x%08x, version 0x%02X\n", + (unsigned int) to, td->version[chip]); + + /* Mark it as used */ + td->pages[chip] = page; + } + return 0; + } + + /** + * nand_memory_bbt - [GENERIC] create a memory based bad block table + * @mtd: MTD device structure + * @bd: descriptor for the good/bad block search pattern + * + * The function creates a memory based bbt by scanning the device + * for manufacturer / software marked good / bad blocks + */ + static int nand_memory_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) + { + struct nand_chip *this = mtd->priv; + + /* Ensure that we only scan for the pattern and nothing else */ + bd->options = 0; + create_bbt (mtd, this->data_buf, bd, -1); + return 0; + } + + /** + * check_create - [GENERIC] create and write bbt(s) if neccecary + * @mtd: MTD device structure + * @buf: temporary buffer + * @bd: descriptor for the good/bad block search pattern + * + * The function checks the results of the previous call to read_bbt + * and creates / updates the bbt(s) if neccecary + * Creation is neccecary if no bbt was found for the chip/device + * Update is neccecary if one of the tables is missing or the + * version nr. of one table is less than the other + */ + static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) + { + int i, chips, writeops, chipsel, res; + struct nand_chip *this = mtd->priv; + struct nand_bbt_descr *td = this->bbt_td; + struct nand_bbt_descr *md = this->bbt_md; + struct nand_bbt_descr *rd, *rd2; + + /* Do we have a bbt per chip ? */ + if (td->options & NAND_BBT_PERCHIP) + chips = this->numchips; + else + chips = 1; + + for (i = 0; i < chips; i++) { + writeops = 0; + rd = NULL; + rd2 = NULL; + /* Per chip or per device ? */ + chipsel = (td->options & NAND_BBT_PERCHIP) ? i : -1; + /* Mirrored table avilable ? */ + if (md) { + if (td->pages[i] == -1 && md->pages[i] == -1) { + writeops = 0x03; + goto create; + } + + if (td->pages[i] == -1) { + rd = md; + td->version[i] = md->version[i]; + writeops = 1; + goto writecheck; + } + + if (md->pages[i] == -1) { + rd = td; + md->version[i] = td->version[i]; + writeops = 2; + goto writecheck; + } + + if (td->version[i] == md->version[i]) { + rd = td; + if (!(td->options & NAND_BBT_VERSION)) + rd2 = md; + goto writecheck; + } + + if (((int8_t) (td->version[i] - md->version[i])) > 0) { + rd = td; + md->version[i] = td->version[i]; + writeops = 2; + } else { + rd = md; + td->version[i] = md->version[i]; + writeops = 1; + } + + goto writecheck; + + } else { + if (td->pages[i] == -1) { + writeops = 0x01; + goto create; + } + rd = td; + goto writecheck; + } + create: + /* Create the bad block table by scanning the device ? */ + if (!(td->options & NAND_BBT_CREATE)) + continue; + + /* Create the table in memory by scanning the chip(s) */ + create_bbt (mtd, buf, bd, chipsel); + + td->version[i] = 1; + if (md) + md->version[i] = 1; + writecheck: + /* read back first ? */ + if (rd) + read_abs_bbt (mtd, buf, rd, chipsel); + /* If they weren't versioned, read both. */ + if (rd2) + read_abs_bbt (mtd, buf, rd2, chipsel); + + /* Write the bad block table to the device ? */ + if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { + res = write_bbt (mtd, buf, td, md, chipsel); + if (res < 0) + return res; + } + + /* Write the mirror bad block table to the device ? */ + if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { + res = write_bbt (mtd, buf, md, td, chipsel); + if (res < 0) + return res; + } + } + return 0; + } + + /** + * mark_bbt_regions - [GENERIC] mark the bad block table regions + * @mtd: MTD device structure + * @td: bad block table descriptor + * + * The bad block table regions are marked as "bad" to prevent + * accidental erasures / writes. The regions are identified by + * the mark 0x02. + */ + static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) + { + struct nand_chip *this = mtd->priv; + int i, j, chips, block, nrblocks, update; + uint8_t oldval, newval; + + /* Do we have a bbt per chip ? */ + if (td->options & NAND_BBT_PERCHIP) { + chips = this->numchips; + nrblocks = (int)(this->chipsize >> this->bbt_erase_shift); + } else { + chips = 1; + nrblocks = (int)(mtd->size >> this->bbt_erase_shift); + } + + for (i = 0; i < chips; i++) { + if ((td->options & NAND_BBT_ABSPAGE) || + !(td->options & NAND_BBT_WRITE)) { + if (td->pages[i] == -1) continue; + block = td->pages[i] >> (this->bbt_erase_shift - this->page_shift); + block <<= 1; + oldval = this->bbt[(block >> 3)]; + newval = oldval | (0x2 << (block & 0x06)); + this->bbt[(block >> 3)] = newval; + if ((oldval != newval) && td->reserved_block_code) + nand_update_bbt(mtd, block << (this->bbt_erase_shift - 1)); + continue; + } + update = 0; + if (td->options & NAND_BBT_LASTBLOCK) + block = ((i + 1) * nrblocks) - td->maxblocks; + else + block = i * nrblocks; + block <<= 1; + for (j = 0; j < td->maxblocks; j++) { + oldval = this->bbt[(block >> 3)]; + newval = oldval | (0x2 << (block & 0x06)); + this->bbt[(block >> 3)] = newval; + if (oldval != newval) update = 1; + block += 2; + } + /* If we want reserved blocks to be recorded to flash, and some + new ones have been marked, then we need to update the stored + bbts. This should only happen once. */ + if (update && td->reserved_block_code) + nand_update_bbt(mtd, (block - 2) << (this->bbt_erase_shift - 1)); + } + } + + /** + * nand_scan_bbt - [NAND Interface] scan, find, read and maybe create bad block table(s) + * @mtd: MTD device structure + * @bd: descriptor for the good/bad block search pattern + * + * The function checks, if a bad block table(s) is/are already + * available. If not it scans the device for manufacturer + * marked good / bad blocks and writes the bad block table(s) to + * the selected place. + * + * The bad block table memory is allocated here. It must be freed + * by calling the nand_free_bbt function. + * + */ + int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) + { + struct nand_chip *this = mtd->priv; + int len, res = 0; + uint8_t *buf; + struct nand_bbt_descr *td = this->bbt_td; + struct nand_bbt_descr *md = this->bbt_md; + + len = mtd->size >> (this->bbt_erase_shift + 2); + /* Allocate memory (2bit per block) */ + this->bbt = kmalloc (len, GFP_KERNEL); + if (!this->bbt) { + printk (KERN_ERR "nand_scan_bbt: Out of memory\n"); + return -ENOMEM; + } + /* Clear the memory bad block table */ + memset (this->bbt, 0x00, len); + + /* If no primary table decriptor is given, scan the device + * to build a memory based bad block table + */ + if (!td) + return nand_memory_bbt(mtd, bd); + + /* Allocate a temporary buffer for one eraseblock incl. oob */ + len = (1 << this->bbt_erase_shift); + len += (len >> this->page_shift) * mtd->oobsize; + buf = kmalloc (len, GFP_KERNEL); + if (!buf) { + printk (KERN_ERR "nand_bbt: Out of memory\n"); + kfree (this->bbt); + this->bbt = NULL; + return -ENOMEM; + } + + /* Is the bbt at a given page ? */ + if (td->options & NAND_BBT_ABSPAGE) { + res = read_abs_bbts (mtd, buf, td, md); + } else { + /* Search the bad block table using a pattern in oob */ + res = search_read_bbts (mtd, buf, td, md); + } + + if (res) + res = check_create (mtd, buf, bd); + + /* Prevent the bbt regions from erasing / writing */ + mark_bbt_region (mtd, td); + if (md) + mark_bbt_region (mtd, md); + + kfree (buf); + return res; + } + + + /** + * nand_update_bbt - [NAND Interface] update bad block table(s) + * @mtd: MTD device structure + * @offs: the offset of the newly marked block + * + * The function updates the bad block table(s) + */ + int nand_update_bbt (struct mtd_info *mtd, loff_t offs) + { + struct nand_chip *this = mtd->priv; + int len, res = 0, writeops = 0; + int chip, chipsel; + uint8_t *buf; + struct nand_bbt_descr *td = this->bbt_td; + struct nand_bbt_descr *md = this->bbt_md; + + if (!this->bbt || !td) + return -EINVAL; + + len = mtd->size >> (this->bbt_erase_shift + 2); + /* Allocate a temporary buffer for one eraseblock incl. oob */ + len = (1 << this->bbt_erase_shift); + len += (len >> this->page_shift) * mtd->oobsize; + buf = kmalloc (len, GFP_KERNEL); + if (!buf) { + printk (KERN_ERR "nand_update_bbt: Out of memory\n"); + return -ENOMEM; + } + + writeops = md != NULL ? 0x03 : 0x01; + + /* Do we have a bbt per chip ? */ + if (td->options & NAND_BBT_PERCHIP) { + chip = (int) (offs >> this->chip_shift); + chipsel = chip; + } else { + chip = 0; + chipsel = -1; + } + + td->version[chip]++; + if (md) + md->version[chip]++; + + /* Write the bad block table to the device ? */ + if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { + res = write_bbt (mtd, buf, td, md, chipsel); + if (res < 0) + goto out; + } + /* Write the mirror bad block table to the device ? */ + if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) { + res = write_bbt (mtd, buf, md, td, chipsel); + } + + out: + kfree (buf); + return res; + } + + /* Define some generic bad / good block scan pattern which are used + * while scanning a device for factory marked good / bad blocks + * + * The memory based patterns just + */ + static uint8_t scan_ff_pattern[] = { 0xff, 0xff }; + + static struct nand_bbt_descr smallpage_memorybased = { + .options = 0, + .offs = 5, + .len = 1, + .pattern = scan_ff_pattern + }; + + static struct nand_bbt_descr largepage_memorybased = { + .options = 0, + .offs = 0, + .len = 2, + .pattern = scan_ff_pattern + }; + + static struct nand_bbt_descr smallpage_flashbased = { + .options = NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES, + .offs = 5, + .len = 1, + .pattern = scan_ff_pattern + }; + + static struct nand_bbt_descr largepage_flashbased = { + .options = NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES, + .offs = 0, + .len = 2, + .pattern = scan_ff_pattern + }; + + static uint8_t scan_agand_pattern[] = { 0x1C, 0x71, 0xC7, 0x1C, 0x71, 0xC7 }; + + static struct nand_bbt_descr agand_flashbased = { + .options = NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES, + .offs = 0x20, + .len = 6, + .pattern = scan_agand_pattern + }; + + /* Generic flash bbt decriptors + */ + static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' }; + static uint8_t mirror_pattern[] = {'1', 't', 'b', 'B' }; + + static struct nand_bbt_descr bbt_main_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, + .offs = 8, + .len = 4, + .veroffs = 12, + .maxblocks = 4, + .pattern = bbt_pattern + }; + + static struct nand_bbt_descr bbt_mirror_descr = { + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, + .offs = 8, + .len = 4, + .veroffs = 12, + .maxblocks = 4, + .pattern = mirror_pattern + }; + + /** + * nand_default_bbt - [NAND Interface] Select a default bad block table for the device + * @mtd: MTD device structure + * + * This function selects the default bad block table + * support for the device and calls the nand_scan_bbt function + * + */ + int nand_default_bbt (struct mtd_info *mtd) + { + struct nand_chip *this = mtd->priv; + + /* Default for AG-AND. We must use a flash based + * bad block table as the devices have factory marked + * _good_ blocks. Erasing those blocks leads to loss + * of the good / bad information, so we _must_ store + * this information in a good / bad table during + * startup + */ + if (this->options & NAND_IS_AND) { + /* Use the default pattern descriptors */ + if (!this->bbt_td) { + this->bbt_td = &bbt_main_descr; + this->bbt_md = &bbt_mirror_descr; + } + this->options |= NAND_USE_FLASH_BBT; + return nand_scan_bbt (mtd, &agand_flashbased); + } + + + /* Is a flash based bad block table requested ? */ + if (this->options & NAND_USE_FLASH_BBT) { + /* Use the default pattern descriptors */ + if (!this->bbt_td) { + this->bbt_td = &bbt_main_descr; + this->bbt_md = &bbt_mirror_descr; + } + if (!this->badblock_pattern) { + this->badblock_pattern = (mtd->oobblock > 512) ? + &largepage_flashbased : &smallpage_flashbased; + } + } else { + this->bbt_td = NULL; + this->bbt_md = NULL; + if (!this->badblock_pattern) { + this->badblock_pattern = (mtd->oobblock > 512) ? + &largepage_memorybased : &smallpage_memorybased; + } + } + return nand_scan_bbt (mtd, this->badblock_pattern); + } + + /** + * nand_isbad_bbt - [NAND Interface] Check if a block is bad + * @mtd: MTD device structure + * @offs: offset in the device + * @allowbbt: allow access to bad block table region + * + */ + int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt) + { + struct nand_chip *this = mtd->priv; + int block; + uint8_t res; + + /* Get block number * 2 */ + block = (int) (offs >> (this->bbt_erase_shift - 1)); + res = (this->bbt[block >> 3] >> (block & 0x06)) & 0x03; + + DEBUG (MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n", + (unsigned int)offs, res, block >> 1); + + switch ((int)res) { + case 0x00: return 0; + case 0x01: return 1; + case 0x02: return allowbbt ? 0 : 1; + } + return 1; + } + + #endif ++#endif /* CONFIG_NEW_NAND_CODE */ ++ diff --cc drivers/nand/nand_ecc.c index 0000000000,6e11c22858..4e610c1123 mode 000000,100644..100644 --- a/drivers/nand/nand_ecc.c +++ b/drivers/nand/nand_ecc.c @@@ -1,0 -1,243 +1,247 @@@ + /* + * This file contains an ECC algorithm from Toshiba that detects and + * corrects 1 bit errors in a 256 byte block of data. + * + * drivers/mtd/nand/nand_ecc.c + * + * Copyright (C) 2000-2004 Steven J. Hill (sjhill@realitydiluted.com) + * Toshiba America Electronics Components, Inc. + * + * $Id: nand_ecc.c,v 1.14 2004/06/16 15:34:37 gleixner Exp $ + * + * This file is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 or (at your option) any + * later version. + * + * This file is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this file; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + * + * As a special exception, if other files instantiate templates or use + * macros or inline functions from these files, or you compile these + * files and link them with other works to produce a work based on these + * files, these files do not by themselves cause the resulting work to be + * covered by the GNU General Public License. However the source code for + * these files must still be made available in accordance with section (3) + * of the GNU General Public License. + * + * This exception does not invalidate any other reasons why a work based on + * this file might be covered by the GNU General Public License. + */ + + #include + ++#ifdef CONFIG_NEW_NAND_CODE + #if (CONFIG_COMMANDS & CFG_CMD_NAND) + ++#include + /* + * Pre-calculated 256-way 1 byte column parity + */ + static const u_char nand_ecc_precalc_table[] = { + 0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00, + 0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65, + 0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66, + 0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03, + 0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69, + 0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c, + 0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f, + 0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a, + 0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a, + 0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f, + 0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c, + 0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69, + 0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03, + 0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66, + 0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65, + 0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00 + }; + + + /** + * nand_trans_result - [GENERIC] create non-inverted ECC + * @reg2: line parity reg 2 + * @reg3: line parity reg 3 + * @ecc_code: ecc + * + * Creates non-inverted ECC code from line parity + */ + static void nand_trans_result(u_char reg2, u_char reg3, + u_char *ecc_code) + { + u_char a, b, i, tmp1, tmp2; + + /* Initialize variables */ + a = b = 0x80; + tmp1 = tmp2 = 0; + + /* Calculate first ECC byte */ + for (i = 0; i < 4; i++) { + if (reg3 & a) /* LP15,13,11,9 --> ecc_code[0] */ + tmp1 |= b; + b >>= 1; + if (reg2 & a) /* LP14,12,10,8 --> ecc_code[0] */ + tmp1 |= b; + b >>= 1; + a >>= 1; + } + + /* Calculate second ECC byte */ + b = 0x80; + for (i = 0; i < 4; i++) { + if (reg3 & a) /* LP7,5,3,1 --> ecc_code[1] */ + tmp2 |= b; + b >>= 1; + if (reg2 & a) /* LP6,4,2,0 --> ecc_code[1] */ + tmp2 |= b; + b >>= 1; + a >>= 1; + } + + /* Store two of the ECC bytes */ + ecc_code[0] = tmp1; + ecc_code[1] = tmp2; + } + + /** + * nand_calculate_ecc - [NAND Interface] Calculate 3 byte ECC code for 256 byte block + * @mtd: MTD block structure + * @dat: raw data + * @ecc_code: buffer for ECC + */ + int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code) + { + u_char idx, reg1, reg2, reg3; + int j; + + /* Initialize variables */ + reg1 = reg2 = reg3 = 0; + ecc_code[0] = ecc_code[1] = ecc_code[2] = 0; + + /* Build up column parity */ + for(j = 0; j < 256; j++) { + + /* Get CP0 - CP5 from table */ + idx = nand_ecc_precalc_table[dat[j]]; + reg1 ^= (idx & 0x3f); + + /* All bit XOR = 1 ? */ + if (idx & 0x40) { + reg3 ^= (u_char) j; + reg2 ^= ~((u_char) j); + } + } + + /* Create non-inverted ECC code from line parity */ + nand_trans_result(reg2, reg3, ecc_code); + + /* Calculate final ECC code */ + ecc_code[0] = ~ecc_code[0]; + ecc_code[1] = ~ecc_code[1]; + ecc_code[2] = ((~reg1) << 2) | 0x03; + return 0; + } + + /** + * nand_correct_data - [NAND Interface] Detect and correct bit error(s) + * @mtd: MTD block structure + * @dat: raw data read from the chip + * @read_ecc: ECC from the chip + * @calc_ecc: the ECC calculated from raw data + * + * Detect and correct a 1 bit error for 256 byte block + */ + int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc) + { + u_char a, b, c, d1, d2, d3, add, bit, i; + + /* Do error detection */ + d1 = calc_ecc[0] ^ read_ecc[0]; + d2 = calc_ecc[1] ^ read_ecc[1]; + d3 = calc_ecc[2] ^ read_ecc[2]; + + if ((d1 | d2 | d3) == 0) { + /* No errors */ + return 0; + } + else { + a = (d1 ^ (d1 >> 1)) & 0x55; + b = (d2 ^ (d2 >> 1)) & 0x55; + c = (d3 ^ (d3 >> 1)) & 0x54; + + /* Found and will correct single bit error in the data */ + if ((a == 0x55) && (b == 0x55) && (c == 0x54)) { + c = 0x80; + add = 0; + a = 0x80; + for (i=0; i<4; i++) { + if (d1 & c) + add |= a; + c >>= 2; + a >>= 1; + } + c = 0x80; + for (i=0; i<4; i++) { + if (d2 & c) + add |= a; + c >>= 2; + a >>= 1; + } + bit = 0; + b = 0x04; + c = 0x80; + for (i=0; i<3; i++) { + if (d3 & c) + bit |= b; + c >>= 2; + b >>= 1; + } + b = 0x01; + a = dat[add]; + a ^= (b << bit); + dat[add] = a; + return 1; + } else { + i = 0; + while (d1) { + if (d1 & 0x01) + ++i; + d1 >>= 1; + } + while (d2) { + if (d2 & 0x01) + ++i; + d2 >>= 1; + } + while (d3) { + if (d3 & 0x01) + ++i; + d3 >>= 1; + } + if (i == 1) { + /* ECC Code Error Correction */ + read_ecc[0] = calc_ecc[0]; + read_ecc[1] = calc_ecc[1]; + read_ecc[2] = calc_ecc[2]; + return 2; + } + else { + /* Uncorrectable Error */ + return -1; + } + } + } + + /* Should never happen */ + return -1; + } + + #endif /* CONFIG_COMMANDS & CFG_CMD_NAND */ ++#endif /* CONFIG_NEW_NAND_CODE */ ++ diff --cc drivers/nand/nand_ids.c index 0000000000,39882cc76b..d355326107 mode 000000,100644..100644 --- a/drivers/nand/nand_ids.c +++ b/drivers/nand/nand_ids.c @@@ -1,0 -1,127 +1,131 @@@ + /* + * drivers/mtd/nandids.c + * + * Copyright (C) 2002 Thomas Gleixner (tglx@linutronix.de) + * + * $Id: nand_ids.c,v 1.10 2004/05/26 13:40:12 gleixner Exp $ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ ++ + #include + ++#ifdef CONFIG_NEW_NAND_CODE + #if (CONFIG_COMMANDS & CFG_CMD_NAND) + + #include + + /* + * Chip ID list + * + * Name. ID code, pagesize, chipsize in MegaByte, eraseblock size, + * options + * + * Pagesize; 0, 256, 512 + * 0 get this information from the extended chip ID + + 256 256 Byte page size + * 512 512 Byte page size + */ + struct nand_flash_dev nand_flash_ids[] = { + {"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0}, + {"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, 0}, + {"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, 0}, + {"NAND 1MiB 3,3V 8-bit", 0xe8, 256, 1, 0x1000, 0}, + {"NAND 1MiB 3,3V 8-bit", 0xec, 256, 1, 0x1000, 0}, + {"NAND 2MiB 3,3V 8-bit", 0xea, 256, 2, 0x1000, 0}, + {"NAND 4MiB 3,3V 8-bit", 0xd5, 512, 4, 0x2000, 0}, + {"NAND 4MiB 3,3V 8-bit", 0xe3, 512, 4, 0x2000, 0}, + {"NAND 4MiB 3,3V 8-bit", 0xe5, 512, 4, 0x2000, 0}, + {"NAND 8MiB 3,3V 8-bit", 0xd6, 512, 8, 0x2000, 0}, + + {"NAND 8MiB 1,8V 8-bit", 0x39, 512, 8, 0x2000, 0}, + {"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, 0}, + {"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16}, + {"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16}, + + {"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0}, + {"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0}, + {"NAND 16MiB 1,8V 16-bit", 0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 16MiB 3,3V 16-bit", 0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16}, + + {"NAND 32MiB 1,8V 8-bit", 0x35, 512, 32, 0x4000, 0}, + {"NAND 32MiB 3,3V 8-bit", 0x75, 512, 32, 0x4000, 0}, + {"NAND 32MiB 1,8V 16-bit", 0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 32MiB 3,3V 16-bit", 0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16}, + + {"NAND 64MiB 1,8V 8-bit", 0x36, 512, 64, 0x4000, 0}, + {"NAND 64MiB 3,3V 8-bit", 0x76, 512, 64, 0x4000, 0}, + {"NAND 64MiB 1,8V 16-bit", 0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 64MiB 3,3V 16-bit", 0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16}, + + {"NAND 128MiB 1,8V 8-bit", 0x78, 512, 128, 0x4000, 0}, + {"NAND 128MiB 3,3V 8-bit", 0x79, 512, 128, 0x4000, 0}, + {"NAND 128MiB 1,8V 16-bit", 0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16}, + {"NAND 128MiB 3,3V 16-bit", 0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16}, + + {"NAND 256MiB 3,3V 8-bit", 0x71, 512, 256, 0x4000, 0}, + + {"NAND 512MiB 3,3V 8-bit", 0xDC, 512, 512, 0x4000, 0}, + + /* These are the new chips with large page size. The pagesize + * and the erasesize is determined from the extended id bytes + */ + /* 1 Gigabit */ + {"NAND 128MiB 1,8V 8-bit", 0xA1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 128MiB 3,3V 8-bit", 0xF1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 128MiB 1,8V 16-bit", 0xB1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 128MiB 3,3V 16-bit", 0xC1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + + /* 2 Gigabit */ + {"NAND 256MiB 1,8V 8-bit", 0xAA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 256MiB 3,3V 8-bit", 0xDA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 256MiB 1,8V 16-bit", 0xBA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 256MiB 3,3V 16-bit", 0xCA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + + /* 4 Gigabit */ + {"NAND 512MiB 1,8V 8-bit", 0xAC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 512MiB 3,3V 8-bit", 0xDC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 512MiB 1,8V 16-bit", 0xBC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 512MiB 3,3V 16-bit", 0xCC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + + /* 8 Gigabit */ + {"NAND 1GiB 1,8V 8-bit", 0xA3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 1GiB 3,3V 8-bit", 0xD3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 1GiB 1,8V 16-bit", 0xB3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 1GiB 3,3V 16-bit", 0xC3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + + /* 16 Gigabit */ + {"NAND 2GiB 1,8V 8-bit", 0xA5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 2GiB 3,3V 8-bit", 0xD5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, + {"NAND 2GiB 1,8V 16-bit", 0xB5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + {"NAND 2GiB 3,3V 16-bit", 0xC5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, + + /* Renesas AND 1 Gigabit. Those chips do not support extended id and have a strange page/block layout ! + * The chosen minimum erasesize is 4 * 2 * 2048 = 16384 Byte, as those chips have an array of 4 page planes + * 1 block = 2 pages, but due to plane arrangement the blocks 0-3 consists of page 0 + 4,1 + 5, 2 + 6, 3 + 7 + * Anyway JFFS2 would increase the eraseblock size so we chose a combined one which can be erased in one go + * There are more speed improvements for reads and writes possible, but not implemented now + */ + {"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000, NAND_IS_AND | NAND_NO_AUTOINCR | NAND_4PAGE_ARRAY}, + + {NULL,} + }; + + /* + * Manufacturer ID list + */ + struct nand_manufacturers nand_manuf_ids[] = { + {NAND_MFR_TOSHIBA, "Toshiba"}, + {NAND_MFR_SAMSUNG, "Samsung"}, + {NAND_MFR_FUJITSU, "Fujitsu"}, + {NAND_MFR_NATIONAL, "National"}, + {NAND_MFR_RENESAS, "Renesas"}, + {NAND_MFR_STMICRO, "ST Micro"}, + {0x0, "Unknown"} + }; + #endif ++#endif /* CONFIG_NEW_NAND_CODE */ ++ diff --cc include/configs/PPChameleonEVB.h index 7ca827fa4b,2d89f3ffaf..c406c8f4bc --- a/include/configs/PPChameleonEVB.h +++ b/include/configs/PPChameleonEVB.h @@@ -188,10 -188,10 +188,14 @@@ * NAND-FLASH stuff *----------------------------------------------------------------------- */ ++ ++/* Use the new NAND code. (BOARDLIBS = drivers/nand/libnand.a required) */ ++#define CONFIG_NEW_NAND_CODE #define CFG_NAND0_BASE 0xFF400000 #define CFG_NAND1_BASE 0xFF000000 -- --#define CFG_MAX_NAND_DEVICE 2 /* Max number of NAND devices */ ++#define CFG_NAND_BASE_LIST { CFG_NAND0_BASE, CFG_NAND1_BASE } ++#define NAND_BIG_DELAY_US 25 ++#define CFG_MAX_NAND_DEVICE 2 /* Max number of NAND devices */ #define SECTORSIZE 512 #define NAND_NO_RB @@@ -213,6 -213,6 +217,83 @@@ #define CFG_NAND1_ALE (0x80000000 >> 16) /* our ALE is GPIO16 */ #define CFG_NAND1_RDY (0x80000000 >> 31) /* our RDY is GPIO31 */ ++#ifdef CONFIG_NEW_NAND_CODE ++#define MACRO_NAND_DISABLE_CE(nandptr) do \ ++{ \ ++ switch((unsigned long)nandptr) \ ++ { \ ++ case CFG_NAND0_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) | CFG_NAND0_CE); \ ++ break; \ ++ case CFG_NAND1_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) | CFG_NAND1_CE); \ ++ break; \ ++ } \ ++} while(0) ++ ++#define MACRO_NAND_ENABLE_CE(nandptr) do \ ++{ \ ++ switch((unsigned long)nandptr) \ ++ { \ ++ case CFG_NAND0_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_NAND0_CE); \ ++ break; \ ++ case CFG_NAND1_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_NAND1_CE); \ ++ break; \ ++ } \ ++} while(0) ++ ++#define MACRO_NAND_CTL_CLRALE(nandptr) do \ ++{ \ ++ switch((unsigned long)nandptr) \ ++ { \ ++ case CFG_NAND0_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_NAND0_ALE); \ ++ break; \ ++ case CFG_NAND1_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_NAND1_ALE); \ ++ break; \ ++ } \ ++} while(0) ++ ++#define MACRO_NAND_CTL_SETALE(nandptr) do \ ++{ \ ++ switch((unsigned long)nandptr) \ ++ { \ ++ case CFG_NAND0_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) | CFG_NAND0_ALE); \ ++ break; \ ++ case CFG_NAND1_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) | CFG_NAND1_ALE); \ ++ break; \ ++ } \ ++} while(0) ++ ++#define MACRO_NAND_CTL_CLRCLE(nandptr) do \ ++{ \ ++ switch((unsigned long)nandptr) \ ++ { \ ++ case CFG_NAND0_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_NAND0_CLE); \ ++ break; \ ++ case CFG_NAND1_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_NAND1_CLE); \ ++ break; \ ++ } \ ++} while(0) ++ ++#define MACRO_NAND_CTL_SETCLE(nandptr) do { \ ++ switch((unsigned long)nandptr) { \ ++ case CFG_NAND0_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) | CFG_NAND0_CLE); \ ++ break; \ ++ case CFG_NAND1_BASE: \ ++ out32(GPIO0_OR, in32(GPIO0_OR) | CFG_NAND1_CLE); \ ++ break; \ ++ } \ ++} while(0) ++#else #define NAND_DISABLE_CE(nand) do \ { \ switch((unsigned long)(((struct nand_chip *)nand)->IO_ADDR)) \ @@@ -288,6 -288,6 +369,7 @@@ break; \ } \ } while(0) ++#endif /* !CONFIG_NEW_NAND_CODE */ #ifdef NAND_NO_RB /* constant delay (see also tR in the datasheet) */ @@@ -338,16 -338,16 +420,16 @@@ #define CFG_SDRAM_BASE 0x00000000 /* Reserve 256 kB for Monitor */ ++/* #define CFG_FLASH_BASE 0xFFFC0000 #define CFG_MONITOR_BASE CFG_FLASH_BASE #define CFG_MONITOR_LEN (256 * 1024) ++*/ /* Reserve 320 kB for Monitor */ --/* #define CFG_FLASH_BASE 0xFFFB0000 #define CFG_MONITOR_BASE CFG_FLASH_BASE #define CFG_MONITOR_LEN (320 * 1024) --*/ #define CFG_MALLOC_LEN (256 * 1024) /* Reserve 256 kB for malloc() */ diff --cc include/linux/mtd/nand.h index 5236904959,065e1cb4e4..b0894c5e83 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@@ -36,6 -52,48 +36,9 @@@ #ifndef __LINUX_MTD_NAND_H #define __LINUX_MTD_NAND_H -#include -#include - -struct mtd_info; -/* Scan and identify a NAND device */ -extern int nand_scan (struct mtd_info *mtd, int max_chips); -/* Free resources held by the NAND device */ -extern void nand_release (struct mtd_info *mtd); - -/* Read raw data from the device without ECC */ -extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen); - - -/* The maximum number of NAND chips in an array */ -#define NAND_MAX_CHIPS 8 - -/* This constant declares the max. oobsize / page, which - * is supported now. If you add a chip with bigger oobsize/page - * adjust this accordingly. - */ -#define NAND_MAX_OOBSIZE 64 - -/* - * Constants for hardware specific CLE/ALE/NCE function -*/ -/* Select the chip by setting nCE to low */ -#define NAND_CTL_SETNCE 1 -/* Deselect the chip by setting nCE to high */ -#define NAND_CTL_CLRNCE 2 -/* Select the command latch by setting CLE to high */ -#define NAND_CTL_SETCLE 3 -/* Deselect the command latch by setting CLE to low */ -#define NAND_CTL_CLRCLE 4 -/* Select the address latch by setting ALE to high */ -#define NAND_CTL_SETALE 5 -/* Deselect the address latch by setting ALE to low */ -#define NAND_CTL_CLRALE 6 -/* Set write protection by setting WP to high. Not used! */ -#define NAND_CTL_SETWP 7 -/* Clear write protection by setting WP to low. Not used! */ -#define NAND_CTL_CLRWP 8 - ++#ifdef CONFIG_NEW_NAND_CODE ++#include "nand_new.h" ++#else /* * Standard NAND flash commands */ @@@ -172,29 -387,85 +175,29 @@@ struct nand_flash_dev /* * Constants for oob configuration */ -#define NAND_SMALL_BADBLOCK_POS 5 -#define NAND_LARGE_BADBLOCK_POS 0 - +#define NAND_NOOB_ECCPOS0 0 +#define NAND_NOOB_ECCPOS1 1 +#define NAND_NOOB_ECCPOS2 2 +#define NAND_NOOB_ECCPOS3 3 +#define NAND_NOOB_ECCPOS4 6 +#define NAND_NOOB_ECCPOS5 7 +#define NAND_NOOB_BADBPOS -1 +#define NAND_NOOB_ECCVPOS -1 + +#define NAND_JFFS2_OOB_ECCPOS0 0 +#define NAND_JFFS2_OOB_ECCPOS1 1 +#define NAND_JFFS2_OOB_ECCPOS2 2 +#define NAND_JFFS2_OOB_ECCPOS3 3 +#define NAND_JFFS2_OOB_ECCPOS4 6 +#define NAND_JFFS2_OOB_ECCPOS5 7 +#define NAND_JFFS2_OOB_BADBPOS 5 +#define NAND_JFFS2_OOB_ECCVPOS 4 + +#define NAND_JFFS2_OOB8_FSDAPOS 6 +#define NAND_JFFS2_OOB16_FSDAPOS 8 +#define NAND_JFFS2_OOB8_FSDALEN 2 +#define NAND_JFFS2_OOB16_FSDALEN 8 + +unsigned long nand_probe(unsigned long physadr); - ++#endif /* !CONFIG_NEW_NAND_CODE */ #endif /* __LINUX_MTD_NAND_H */ diff --cc include/linux/mtd/nand_new.h index 0000000000,0000000000..7d4b805b9a new file mode 100644 --- /dev/null +++ b/include/linux/mtd/nand_new.h @@@ -1,0 -1,0 +1,469 @@@ ++/* ++ * linux/include/linux/mtd/nand.h ++ * ++ * Copyright (c) 2000 David Woodhouse ++ * Steven J. Hill ++ * Thomas Gleixner ++ * ++ * $Id: nand.h,v 1.68 2004/11/12 10:40:37 gleixner Exp $ ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ * ++ * Info: ++ * Contains standard defines and IDs for NAND flash devices ++ * ++ * Changelog: ++ * 01-31-2000 DMW Created ++ * 09-18-2000 SJH Moved structure out of the Disk-On-Chip drivers ++ * so it can be used by other NAND flash device ++ * drivers. I also changed the copyright since none ++ * of the original contents of this file are specific ++ * to DoC devices. David can whack me with a baseball ++ * bat later if I did something naughty. ++ * 10-11-2000 SJH Added private NAND flash structure for driver ++ * 10-24-2000 SJH Added prototype for 'nand_scan' function ++ * 10-29-2001 TG changed nand_chip structure to support ++ * hardwarespecific function for accessing control lines ++ * 02-21-2002 TG added support for different read/write adress and ++ * ready/busy line access function ++ * 02-26-2002 TG added chip_delay to nand_chip structure to optimize ++ * command delay times for different chips ++ * 04-28-2002 TG OOB config defines moved from nand.c to avoid duplicate ++ * defines in jffs2/wbuf.c ++ * 08-07-2002 TG forced bad block location to byte 5 of OOB, even if ++ * CONFIG_MTD_NAND_ECC_JFFS2 is not set ++ * 08-10-2002 TG extensions to nand_chip structure to support HW-ECC ++ * ++ * 08-29-2002 tglx nand_chip structure: data_poi for selecting ++ * internal / fs-driver buffer ++ * support for 6byte/512byte hardware ECC ++ * read_ecc, write_ecc extended for different oob-layout ++ * oob layout selections: NAND_NONE_OOB, NAND_JFFS2_OOB, ++ * NAND_YAFFS_OOB ++ * 11-25-2002 tglx Added Manufacturer code FUJITSU, NATIONAL ++ * Split manufacturer and device ID structures ++ * ++ * 02-08-2004 tglx added option field to nand structure for chip anomalities ++ * 05-25-2004 tglx added bad block table support, ST-MICRO manufacturer id ++ * update of nand_chip structure description ++ */ ++#ifndef __LINUX_MTD_NAND_NEW_H ++#define __LINUX_MTD_NAND_NEW_H ++ ++#include ++#include ++ ++struct mtd_info; ++/* Scan and identify a NAND device */ ++extern int nand_scan (struct mtd_info *mtd, int max_chips); ++/* Free resources held by the NAND device */ ++extern void nand_release (struct mtd_info *mtd); ++ ++/* Read raw data from the device without ECC */ ++extern int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen); ++ ++ ++ ++/* This constant declares the max. oobsize / page, which ++ * is supported now. If you add a chip with bigger oobsize/page ++ * adjust this accordingly. ++ */ ++#define NAND_MAX_OOBSIZE 64 ++ ++/* ++ * Constants for hardware specific CLE/ALE/NCE function ++*/ ++/* Select the chip by setting nCE to low */ ++#define NAND_CTL_SETNCE 1 ++/* Deselect the chip by setting nCE to high */ ++#define NAND_CTL_CLRNCE 2 ++/* Select the command latch by setting CLE to high */ ++#define NAND_CTL_SETCLE 3 ++/* Deselect the command latch by setting CLE to low */ ++#define NAND_CTL_CLRCLE 4 ++/* Select the address latch by setting ALE to high */ ++#define NAND_CTL_SETALE 5 ++/* Deselect the address latch by setting ALE to low */ ++#define NAND_CTL_CLRALE 6 ++/* Set write protection by setting WP to high. Not used! */ ++#define NAND_CTL_SETWP 7 ++/* Clear write protection by setting WP to low. Not used! */ ++#define NAND_CTL_CLRWP 8 ++ ++/* ++ * Standard NAND flash commands ++ */ ++#define NAND_CMD_READ0 0 ++#define NAND_CMD_READ1 1 ++#define NAND_CMD_PAGEPROG 0x10 ++#define NAND_CMD_READOOB 0x50 ++#define NAND_CMD_ERASE1 0x60 ++#define NAND_CMD_STATUS 0x70 ++#define NAND_CMD_STATUS_MULTI 0x71 ++#define NAND_CMD_SEQIN 0x80 ++#define NAND_CMD_READID 0x90 ++#define NAND_CMD_ERASE2 0xd0 ++#define NAND_CMD_RESET 0xff ++ ++/* Extended commands for large page devices */ ++#define NAND_CMD_READSTART 0x30 ++#define NAND_CMD_CACHEDPROG 0x15 ++ ++/* Status bits */ ++#define NAND_STATUS_FAIL 0x01 ++#define NAND_STATUS_FAIL_N1 0x02 ++#define NAND_STATUS_TRUE_READY 0x20 ++#define NAND_STATUS_READY 0x40 ++#define NAND_STATUS_WP 0x80 ++ ++/* ++ * Constants for ECC_MODES ++ */ ++ ++/* No ECC. Usage is not recommended ! */ ++#define NAND_ECC_NONE 0 ++/* Software ECC 3 byte ECC per 256 Byte data */ ++#define NAND_ECC_SOFT 1 ++/* Hardware ECC 3 byte ECC per 256 Byte data */ ++#define NAND_ECC_HW3_256 2 ++/* Hardware ECC 3 byte ECC per 512 Byte data */ ++#define NAND_ECC_HW3_512 3 ++/* Hardware ECC 3 byte ECC per 512 Byte data */ ++#define NAND_ECC_HW6_512 4 ++/* Hardware ECC 8 byte ECC per 512 Byte data */ ++#define NAND_ECC_HW8_512 6 ++/* Hardware ECC 12 byte ECC per 2048 Byte data */ ++#define NAND_ECC_HW12_2048 7 ++ ++/* ++ * Constants for Hardware ECC ++*/ ++/* Reset Hardware ECC for read */ ++#define NAND_ECC_READ 0 ++/* Reset Hardware ECC for write */ ++#define NAND_ECC_WRITE 1 ++/* Enable Hardware ECC before syndrom is read back from flash */ ++#define NAND_ECC_READSYN 2 ++ ++/* Option constants for bizarre disfunctionality and real ++* features ++*/ ++/* Chip can not auto increment pages */ ++#define NAND_NO_AUTOINCR 0x00000001 ++/* Buswitdh is 16 bit */ ++#define NAND_BUSWIDTH_16 0x00000002 ++/* Device supports partial programming without padding */ ++#define NAND_NO_PADDING 0x00000004 ++/* Chip has cache program function */ ++#define NAND_CACHEPRG 0x00000008 ++/* Chip has copy back function */ ++#define NAND_COPYBACK 0x00000010 ++/* AND Chip which has 4 banks and a confusing page / block ++ * assignment. See Renesas datasheet for further information */ ++#define NAND_IS_AND 0x00000020 ++/* Chip has a array of 4 pages which can be read without ++ * additional ready /busy waits */ ++#define NAND_4PAGE_ARRAY 0x00000040 ++ ++/* Options valid for Samsung large page devices */ ++#define NAND_SAMSUNG_LP_OPTIONS \ ++ (NAND_NO_PADDING | NAND_CACHEPRG | NAND_COPYBACK) ++ ++/* Macros to identify the above */ ++#define NAND_CANAUTOINCR(chip) (!(chip->options & NAND_NO_AUTOINCR)) ++#define NAND_MUST_PAD(chip) (!(chip->options & NAND_NO_PADDING)) ++#define NAND_HAS_CACHEPROG(chip) ((chip->options & NAND_CACHEPRG)) ++#define NAND_HAS_COPYBACK(chip) ((chip->options & NAND_COPYBACK)) ++ ++/* Mask to zero out the chip options, which come from the id table */ ++#define NAND_CHIPOPTIONS_MSK (0x0000ffff & ~NAND_NO_AUTOINCR) ++ ++/* Non chip related options */ ++/* Use a flash based bad block table. This option is passed to the ++ * default bad block table function. */ ++#define NAND_USE_FLASH_BBT 0x00010000 ++/* The hw ecc generator provides a syndrome instead a ecc value on read ++ * This can only work if we have the ecc bytes directly behind the ++ * data bytes. Applies for DOC and AG-AND Renesas HW Reed Solomon generators */ ++#define NAND_HWECC_SYNDROME 0x00020000 ++ ++ ++/* Options set by nand scan */ ++/* Nand scan has allocated oob_buf */ ++#define NAND_OOBBUF_ALLOC 0x40000000 ++/* Nand scan has allocated data_buf */ ++#define NAND_DATABUF_ALLOC 0x80000000 ++ ++ ++/* ++ * nand_state_t - chip states ++ * Enumeration for NAND flash chip state ++ */ ++typedef enum { ++ FL_READY, ++ FL_READING, ++ FL_WRITING, ++ FL_ERASING, ++ FL_SYNCING, ++ FL_CACHEDPRG, ++} nand_state_t; ++ ++/* Keep gcc happy */ ++struct nand_chip; ++ ++#if 0 ++/** ++ * struct nand_hw_control - Control structure for hardware controller (e.g ECC generator) shared among independend devices ++ * @lock: protection lock ++ * @active: the mtd device which holds the controller currently ++ */ ++struct nand_hw_control { ++ spinlock_t lock; ++ struct nand_chip *active; ++}; ++#endif ++ ++/** ++ * struct nand_chip - NAND Private Flash Chip Data ++ * @IO_ADDR_R: [BOARDSPECIFIC] address to read the 8 I/O lines of the flash device ++ * @IO_ADDR_W: [BOARDSPECIFIC] address to write the 8 I/O lines of the flash device ++ * @read_byte: [REPLACEABLE] read one byte from the chip ++ * @write_byte: [REPLACEABLE] write one byte to the chip ++ * @read_word: [REPLACEABLE] read one word from the chip ++ * @write_word: [REPLACEABLE] write one word to the chip ++ * @write_buf: [REPLACEABLE] write data from the buffer to the chip ++ * @read_buf: [REPLACEABLE] read data from the chip into the buffer ++ * @verify_buf: [REPLACEABLE] verify buffer contents against the chip data ++ * @select_chip: [REPLACEABLE] select chip nr ++ * @block_bad: [REPLACEABLE] check, if the block is bad ++ * @block_markbad: [REPLACEABLE] mark the block bad ++ * @hwcontrol: [BOARDSPECIFIC] hardwarespecific function for accesing control-lines ++ * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accesing device ready/busy line ++ * If set to NULL no access to ready/busy is available and the ready/busy information ++ * is read from the chip status register ++ * @cmdfunc: [REPLACEABLE] hardwarespecific function for writing commands to the chip ++ * @waitfunc: [REPLACEABLE] hardwarespecific function for wait on ready ++ * @calculate_ecc: [REPLACEABLE] function for ecc calculation or readback from ecc hardware ++ * @correct_data: [REPLACEABLE] function for ecc correction, matching to ecc generator (sw/hw) ++ * @enable_hwecc: [BOARDSPECIFIC] function to enable (reset) hardware ecc generator. Must only ++ * be provided if a hardware ECC is available ++ * @erase_cmd: [INTERN] erase command write function, selectable due to AND support ++ * @scan_bbt: [REPLACEABLE] function to scan bad block table ++ * @eccmode: [BOARDSPECIFIC] mode of ecc, see defines ++ * @eccsize: [INTERN] databytes used per ecc-calculation ++ * @eccbytes: [INTERN] number of ecc bytes per ecc-calculation step ++ * @eccsteps: [INTERN] number of ecc calculation steps per page ++ * @chip_delay: [BOARDSPECIFIC] chip dependent delay for transfering data from array to read regs (tR) ++ * @chip_lock: [INTERN] spinlock used to protect access to this structure and the chip ++ * @wq: [INTERN] wait queue to sleep on if a NAND operation is in progress ++ * @state: [INTERN] the current state of the NAND device ++ * @page_shift: [INTERN] number of address bits in a page (column address bits) ++ * @phys_erase_shift: [INTERN] number of address bits in a physical eraseblock ++ * @bbt_erase_shift: [INTERN] number of address bits in a bbt entry ++ * @chip_shift: [INTERN] number of address bits in one chip ++ * @data_buf: [INTERN] internal buffer for one page + oob ++ * @oob_buf: [INTERN] oob buffer for one eraseblock ++ * @oobdirty: [INTERN] indicates that oob_buf must be reinitialized ++ * @data_poi: [INTERN] pointer to a data buffer ++ * @options: [BOARDSPECIFIC] various chip options. They can partly be set to inform nand_scan about ++ * special functionality. See the defines for further explanation ++ * @badblockpos: [INTERN] position of the bad block marker in the oob area ++ * @numchips: [INTERN] number of physical chips ++ * @chipsize: [INTERN] the size of one chip for multichip arrays ++ * @pagemask: [INTERN] page number mask = number of (pages / chip) - 1 ++ * @pagebuf: [INTERN] holds the pagenumber which is currently in data_buf ++ * @autooob: [REPLACEABLE] the default (auto)placement scheme ++ * @bbt: [INTERN] bad block table pointer ++ * @bbt_td: [REPLACEABLE] bad block table descriptor for flash lookup ++ * @bbt_md: [REPLACEABLE] bad block table mirror descriptor ++ * @badblock_pattern: [REPLACEABLE] bad block scan pattern used for initial bad block scan ++ * @controller: [OPTIONAL] a pointer to a hardware controller structure which is shared among multiple independend devices ++ * @priv: [OPTIONAL] pointer to private chip date ++ */ ++ ++struct nand_chip { ++ void __iomem *IO_ADDR_R; ++ void __iomem *IO_ADDR_W; ++ ++ u_char (*read_byte)(struct mtd_info *mtd); ++ void (*write_byte)(struct mtd_info *mtd, u_char byte); ++ u16 (*read_word)(struct mtd_info *mtd); ++ void (*write_word)(struct mtd_info *mtd, u16 word); ++ ++ void (*write_buf)(struct mtd_info *mtd, const u_char *buf, int len); ++ void (*read_buf)(struct mtd_info *mtd, u_char *buf, int len); ++ int (*verify_buf)(struct mtd_info *mtd, const u_char *buf, int len); ++ void (*select_chip)(struct mtd_info *mtd, int chip); ++ int (*block_bad)(struct mtd_info *mtd, loff_t ofs, int getchip); ++ int (*block_markbad)(struct mtd_info *mtd, loff_t ofs); ++ void (*hwcontrol)(struct mtd_info *mtd, int cmd); ++ int (*dev_ready)(struct mtd_info *mtd); ++ void (*cmdfunc)(struct mtd_info *mtd, unsigned command, int column, int page_addr); ++ int (*waitfunc)(struct mtd_info *mtd, struct nand_chip *this, int state); ++ int (*calculate_ecc)(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code); ++ int (*correct_data)(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc); ++ void (*enable_hwecc)(struct mtd_info *mtd, int mode); ++ void (*erase_cmd)(struct mtd_info *mtd, int page); ++ int (*scan_bbt)(struct mtd_info *mtd); ++ int eccmode; ++ int eccsize; ++ int eccbytes; ++ int eccsteps; ++ int chip_delay; ++#if 0 ++ spinlock_t chip_lock; ++ wait_queue_head_t wq; ++ nand_state_t state; ++#endif ++ int page_shift; ++ int phys_erase_shift; ++ int bbt_erase_shift; ++ int chip_shift; ++ u_char *data_buf; ++ u_char *oob_buf; ++ int oobdirty; ++ u_char *data_poi; ++ unsigned int options; ++ int badblockpos; ++ int numchips; ++ unsigned long chipsize; ++ int pagemask; ++ int pagebuf; ++ struct nand_oobinfo *autooob; ++ uint8_t *bbt; ++ struct nand_bbt_descr *bbt_td; ++ struct nand_bbt_descr *bbt_md; ++ struct nand_bbt_descr *badblock_pattern; ++ struct nand_hw_control *controller; ++ void *priv; ++}; ++ ++/* ++ * NAND Flash Manufacturer ID Codes ++ */ ++#define NAND_MFR_TOSHIBA 0x98 ++#define NAND_MFR_SAMSUNG 0xec ++#define NAND_MFR_FUJITSU 0x04 ++#define NAND_MFR_NATIONAL 0x8f ++#define NAND_MFR_RENESAS 0x07 ++#define NAND_MFR_STMICRO 0x20 ++ ++/** ++ * struct nand_flash_dev - NAND Flash Device ID Structure ++ * ++ * @name: Identify the device type ++ * @id: device ID code ++ * @pagesize: Pagesize in bytes. Either 256 or 512 or 0 ++ * If the pagesize is 0, then the real pagesize ++ * and the eraseize are determined from the ++ * extended id bytes in the chip ++ * @erasesize: Size of an erase block in the flash device. ++ * @chipsize: Total chipsize in Mega Bytes ++ * @options: Bitfield to store chip relevant options ++ */ ++struct nand_flash_dev { ++ char *name; ++ int id; ++ unsigned long pagesize; ++ unsigned long chipsize; ++ unsigned long erasesize; ++ unsigned long options; ++}; ++ ++/** ++ * struct nand_manufacturers - NAND Flash Manufacturer ID Structure ++ * @name: Manufacturer name ++ * @id: manufacturer ID code of device. ++*/ ++struct nand_manufacturers { ++ int id; ++ char * name; ++}; ++ ++extern struct nand_flash_dev nand_flash_ids[]; ++extern struct nand_manufacturers nand_manuf_ids[]; ++ ++/** ++ * struct nand_bbt_descr - bad block table descriptor ++ * @options: options for this descriptor ++ * @pages: the page(s) where we find the bbt, used with option BBT_ABSPAGE ++ * when bbt is searched, then we store the found bbts pages here. ++ * Its an array and supports up to 8 chips now ++ * @offs: offset of the pattern in the oob area of the page ++ * @veroffs: offset of the bbt version counter in the oob are of the page ++ * @version: version read from the bbt page during scan ++ * @len: length of the pattern, if 0 no pattern check is performed ++ * @maxblocks: maximum number of blocks to search for a bbt. This number of ++ * blocks is reserved at the end of the device where the tables are ++ * written. ++ * @reserved_block_code: if non-0, this pattern denotes a reserved (rather than ++ * bad) block in the stored bbt ++ * @pattern: pattern to identify bad block table or factory marked good / ++ * bad blocks, can be NULL, if len = 0 ++ * ++ * Descriptor for the bad block table marker and the descriptor for the ++ * pattern which identifies good and bad blocks. The assumption is made ++ * that the pattern and the version count are always located in the oob area ++ * of the first block. ++ */ ++struct nand_bbt_descr { ++ int options; ++ int pages[NAND_MAX_CHIPS]; ++ int offs; ++ int veroffs; ++ uint8_t version[NAND_MAX_CHIPS]; ++ int len; ++ int maxblocks; ++ int reserved_block_code; ++ uint8_t *pattern; ++}; ++ ++/* Options for the bad block table descriptors */ ++ ++/* The number of bits used per block in the bbt on the device */ ++#define NAND_BBT_NRBITS_MSK 0x0000000F ++#define NAND_BBT_1BIT 0x00000001 ++#define NAND_BBT_2BIT 0x00000002 ++#define NAND_BBT_4BIT 0x00000004 ++#define NAND_BBT_8BIT 0x00000008 ++/* The bad block table is in the last good block of the device */ ++#define NAND_BBT_LASTBLOCK 0x00000010 ++/* The bbt is at the given page, else we must scan for the bbt */ ++#define NAND_BBT_ABSPAGE 0x00000020 ++/* The bbt is at the given page, else we must scan for the bbt */ ++#define NAND_BBT_SEARCH 0x00000040 ++/* bbt is stored per chip on multichip devices */ ++#define NAND_BBT_PERCHIP 0x00000080 ++/* bbt has a version counter at offset veroffs */ ++#define NAND_BBT_VERSION 0x00000100 ++/* Create a bbt if none axists */ ++#define NAND_BBT_CREATE 0x00000200 ++/* Search good / bad pattern through all pages of a block */ ++#define NAND_BBT_SCANALLPAGES 0x00000400 ++/* Scan block empty during good / bad block scan */ ++#define NAND_BBT_SCANEMPTY 0x00000800 ++/* Write bbt if neccecary */ ++#define NAND_BBT_WRITE 0x00001000 ++/* Read and write back block contents when writing bbt */ ++#define NAND_BBT_SAVECONTENT 0x00002000 ++/* Search good / bad pattern on the first and the second page */ ++#define NAND_BBT_SCAN2NDPAGE 0x00004000 ++ ++/* The maximum number of blocks to scan for a bbt */ ++#define NAND_BBT_SCAN_MAXBLOCKS 4 ++ ++extern int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd); ++extern int nand_update_bbt (struct mtd_info *mtd, loff_t offs); ++extern int nand_default_bbt (struct mtd_info *mtd); ++extern int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt); ++extern int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt); ++ ++/* ++* Constants for oob configuration ++*/ ++#define NAND_SMALL_BADBLOCK_POS 5 ++#define NAND_LARGE_BADBLOCK_POS 0 ++ ++#endif /* __LINUX_MTD_NAND_NEW_H */ diff --cc include/nand.h index 0000000000,3490347723..905115b3da mode 000000,100644..100644 --- a/include/nand.h +++ b/include/nand.h @@@ -1,0 -1,63 +1,63 @@@ + /* + * (C) Copyright 2005 + * 2N Telekomunikace, a.s. + * Ladislav Michl + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + + #ifndef _NAND_H_ + #define _NAND_H_ + + #include + #include + #include + + typedef struct mtd_info nand_info_t; + + extern int nand_curr_device; + extern nand_info_t nand_info[]; + + static inline int nand_read(nand_info_t *info, ulong ofs, ulong *len, u_char *buf) + { - return info->read(info, ofs, *len, len, buf); ++ return info->read(info, ofs, *len, (size_t *)len, buf); + } + + static inline int nand_write(nand_info_t *info, ulong ofs, ulong *len, u_char *buf) + { - return info->write(info, ofs, *len, len, buf); ++ return info->write(info, ofs, *len, (size_t *)len, buf); + } + + static inline int nand_block_isbad(nand_info_t *info, ulong ofs) + { + return info->block_isbad(info, ofs); + } + + static inline int nand_erase(nand_info_t *info, ulong off, ulong size) + { + struct erase_info instr; + + instr.mtd = info; + instr.addr = off; + instr.len = size; + instr.callback = 0; + + return info->erase(info, &instr); + } + + #endif