X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=README;h=8047c778887051693fda45a41be5c6b63b433aad;hb=4713010adf5beda87410d637ebfc58db0db9a9db;hp=90714727cde2d714643b2ac11d246bf41ec74627;hpb=4fb799aeafa71c4e6caacd3acdc4a4547cfbd5d4;p=u-boot diff --git a/README b/README index 90714727cd..8047c77888 100644 --- a/README +++ b/README @@ -1,5 +1,5 @@ # -# (C) Copyright 2000 - 2008 +# (C) Copyright 2000 - 2009 # Wolfgang Denk, DENX Software Engineering, wd@denx.de. # # See file CREDITS for list of people who contributed to this @@ -138,6 +138,7 @@ U-Boot will always have a patchlevel of "0". Directory Hierarchy: ==================== +- api Machine/arch independent API for external apps - board Board dependent files - common Misc architecture independent functions - cpu CPU specific files @@ -178,8 +179,8 @@ Directory Hierarchy: - disk Code for disk drive partition handling - doc Documentation (don't expect too much) - drivers Commonly used device drivers -- dtt Digital Thermometer and Thermostat drivers - examples Example code for standalone applications, etc. +- fs Filesystem code (cramfs, ext2, jffs2, etc.) - include Header Files - lib_arm Files generic to ARM architecture - lib_avr32 Files generic to AVR32 architecture @@ -187,9 +188,12 @@ Directory Hierarchy: - lib_generic Files generic to all architectures - lib_i386 Files generic to i386 architecture - lib_m68k Files generic to m68k architecture +- lib_microblaze Files generic to microblaze architecture - lib_mips Files generic to MIPS architecture - lib_nios Files generic to NIOS architecture +- lib_nios2 Files generic to NIOS2 architecture - lib_ppc Files generic to PowerPC architecture +- lib_sh Files generic to SH architecture - lib_sparc Files generic to SPARC architecture - libfdt Library files to support flattened device trees - net Networking code @@ -368,8 +372,10 @@ The following options need to be configured: * Adds the "fdt" command * The bootm command automatically updates the fdt - OF_CPU - The proper name of the cpus node. - OF_SOC - The proper name of the soc node. + OF_CPU - The proper name of the cpus node (only required for + MPC512X and MPC5xxx based boards). + OF_SOC - The proper name of the soc node (only required for + MPC512X and MPC5xxx based boards). OF_TBCLK - The timebase frequency. OF_STDOUT_PATH - The path to the console device @@ -386,6 +392,15 @@ The following options need to be configured: This define fills in the correct boot CPU in the boot param header, the default value is zero if undefined. + CONFIG_OF_IDE_FIXUP + + U-Boot can detect if an IDE device is present or not. + If not, and this new config option is activated, U-Boot + removes the ATA node from the DTS before booting Linux, + so the Linux IDE driver does not probe the device and + crash. This is needed for buggy hardware (uc101) where + no pull down resistor is connected to the signal IDE5V_DD7. + - vxWorks boot parameters: bootvx constructs a valid bootline using the following @@ -609,6 +624,7 @@ The following options need to be configured: CONFIG_CMD_DS4510_RST * ds4510 I2C rst command CONFIG_CMD_DTT * Digital Therm and Thermostat CONFIG_CMD_ECHO echo arguments + CONFIG_CMD_EDITENV edit env variable CONFIG_CMD_EEPROM * EEPROM read/write support CONFIG_CMD_ELF * bootelf, bootvx CONFIG_CMD_SAVEENV saveenv @@ -629,6 +645,8 @@ The following options need to be configured: CONFIG_CMD_KGDB * kgdb CONFIG_CMD_LOADB loadb CONFIG_CMD_LOADS loads + CONFIG_CMD_MD5SUM print md5 message digest + (requires CONFIG_CMD_MEMORY and CONFIG_MD5) CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, loop, loopw, mtest CONFIG_CMD_MISC Misc functions like sleep etc @@ -652,6 +670,8 @@ The following options need to be configured: (requires CONFIG_CMD_I2C) CONFIG_CMD_SETGETDCR Support for DCR Register access (4xx only) + CONFIG_CMD_SHA1 print sha1 memory digest + (requires CONFIG_CMD_MEMORY) CONFIG_CMD_SOURCE "source" command Support CONFIG_CMD_SPI * SPI serial bus support CONFIG_CMD_USB * USB support @@ -854,9 +874,13 @@ The following options need to be configured: MPC5200 USB requires additional defines: CONFIG_USB_CLOCK for 528 MHz Clock: 0x0001bbbb + CONFIG_PSC3_USB + for USB on PSC3 CONFIG_USB_CONFIG for differential drivers: 0x00001000 for single ended drivers: 0x00005000 + for differential drivers on PSC3: 0x00000100 + for single ended drivers on PSC3: 0x00004100 CONFIG_SYS_USB_EVENT_POLL May be defined to allow interrupt polling instead of using asynchronous interrupts @@ -1358,6 +1382,13 @@ The following options need to be configured: therefore be cleared to 0 (See, eg, MPC823e User's Manual p.16-473). So, set CONFIG_SYS_I2C_SLAVE to 0. + CONFIG_SYS_I2C_INIT_MPC5XXX + + When a board is reset during an i2c bus transfer + chips might think that the current transfer is still + in progress. Reset the slave devices by sending start + commands until the slave device responds. + That's all that's required for CONFIG_HARD_I2C. If you use the software i2c interface (CONFIG_SOFT_I2C) @@ -1862,25 +1893,6 @@ The following options need to be configured: example, some LED's) on your board. At the moment, the following checkpoints are implemented: -- Automatic software updates via TFTP server - CONFIG_UPDATE_TFTP - CONFIG_UPDATE_TFTP_CNT_MAX - CONFIG_UPDATE_TFTP_MSEC_MAX - - These options enable and control the auto-update feature; - for a more detailed description refer to doc/README.update. - -- MTD Support (mtdparts command, UBI support) - CONFIG_MTD_DEVICE - - Adds the MTD device infrastructure from the Linux kernel. - Needed for mtdparts command support. - - CONFIG_MTD_PARTITIONS - - Adds the MTD partitioning infrastructure from the Linux - kernel. Needed for UBI support. - Legacy uImage format: Arg Where When @@ -2034,6 +2046,25 @@ FIT uImage format: -150 common/cmd_nand.c Incorrect FIT image format 151 common/cmd_nand.c FIT image format OK +- Automatic software updates via TFTP server + CONFIG_UPDATE_TFTP + CONFIG_UPDATE_TFTP_CNT_MAX + CONFIG_UPDATE_TFTP_MSEC_MAX + + These options enable and control the auto-update feature; + for a more detailed description refer to doc/README.update. + +- MTD Support (mtdparts command, UBI support) + CONFIG_MTD_DEVICE + + Adds the MTD device infrastructure from the Linux kernel. + Needed for mtdparts command support. + + CONFIG_MTD_PARTITIONS + + Adds the MTD partitioning infrastructure from the Linux + kernel. Needed for UBI support. + Modem Support: -------------- @@ -2993,14 +3024,6 @@ Some configuration options can be set using Environment Variables: configuration from the BOOTP server, but not try to load any image using TFTP - autoscript - if set to "yes" commands like "loadb", "loady", - "bootp", "tftpb", "rarpboot" and "nfs" will attempt - to automatically run script images (by internally - calling "source"). - - autoscript_uname - if script image is in a format (FIT) this - variable is used to get script subimage unit name. - autostart - if set to "yes", an image loaded using the "bootp", "rarpboot", "tftpboot" or "diskboot" commands will be automatically started (by internally calling @@ -3904,10 +3927,10 @@ For PowerPC, the following registers have specific use: average for all boards 752 bytes for the whole U-Boot image, 624 text + 127 data). -On Blackfin, the normal C ABI (except for P5) is followed as documented here: +On Blackfin, the normal C ABI (except for P3) is followed as documented here: http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface - ==> U-Boot will use P5 to hold a pointer to the global data + ==> U-Boot will use P3 to hold a pointer to the global data On ARM, the following registers are used: