X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=README;h=5e2bca41c1acd9b28ee7ded28e85b2b3048192bf;hb=00f0dfaaf9a4f5ff3c7e9503da413bbf936e4ee8;hp=592d1d884208a55dc4a86d3b9f4df463e18f9c2e;hpb=d9a2f416d6ac6058cd7845033ae4dc32ef1c0746;p=u-boot diff --git a/README b/README index 592d1d8842..5e2bca41c1 100644 --- a/README +++ b/README @@ -153,6 +153,8 @@ Directory Hierarchy: - at32ap Files specific to Atmel AVR32 AP CPUs - i386 Files specific to i386 CPUs - ixp Files specific to Intel XScale IXP CPUs + - leon2 Files specific to Gaisler LEON2 SPARC CPU + - leon3 Files specific to Gaisler LEON3 SPARC CPU - mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs - mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs - mcf532x Files specific to Freescale ColdFire MCF5329 CPUs @@ -186,6 +188,7 @@ Directory Hierarchy: - lib_mips Files generic to MIPS architecture - lib_nios Files generic to NIOS architecture - lib_ppc Files generic to PowerPC architecture +- lib_sparc Files generic to SPARC architecture - libfdt Library files to support flattened device trees - net Networking code - post Power On Self Test @@ -372,19 +375,6 @@ The following options need to be configured: boards with QUICC Engines require OF_QE to set UCC mac addresses - CONFIG_OF_HAS_BD_T - - * CONFIG_OF_LIBFDT - enables the "fdt bd_t" command - * CONFIG_OF_FLAT_TREE - The resulting flat device tree - will have a copy of the bd_t. Space should be - pre-allocated in the dts for the bd_t. - - CONFIG_OF_HAS_UBOOT_ENV - - * CONFIG_OF_LIBFDT - enables the "fdt env" command - * CONFIG_OF_FLAT_TREE - The resulting flat device tree - will have a copy of u-boot's environment variables - CONFIG_OF_BOARD_SETUP Board code has addition modification that it wants to make @@ -682,6 +672,7 @@ The following options need to be configured: CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC + CONFIG_RTC_MC13783 - use MC13783 RTC CONFIG_RTC_MC146818 - use MC146818 RTC CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC @@ -751,6 +742,9 @@ The following options need to be configured: CONFIG_E1000 Support for Intel 8254x gigabit chips. + CONFIG_E1000_FALLBACK_MAC + default MAC for empty eeprom after production. + CONFIG_EEPRO100 Support for Intel 82557/82559/82559ER chips. Optional CONFIG_EEPRO100_SROM_WRITE enables eeprom @@ -1421,6 +1415,11 @@ The following options need to be configured: Currently supported on some MPC8xxx processors. For an example, see include/configs/mpc8349emds.h. + CONFIG_MXC_SPI + + Enables the driver for the SPI controllers on i.MX and MXC + SoCs. Currently only i.MX31 is supported. + - FPGA Support: CONFIG_FPGA Enables FPGA subsystem. @@ -1562,6 +1561,10 @@ The following options need to be configured: before giving up the operation. If not defined, a default value of 5 is used. + CONFIG_ARP_TIMEOUT + + Timeout waiting for an ARP reply in milliseconds. + - Command Interpreter: CONFIG_AUTO_COMPLETE @@ -1943,6 +1946,27 @@ Configuration Settings: Scratch address used by the alternate memory test You only need to set this if address zero isn't writeable +- CFG_MEM_TOP_HIDE (PPC only): + If CFG_MEM_TOP_HIDE is defined in the board config header, + this specified memory area will get subtracted from the top + (end) of ram and won't get "touched" at all by U-Boot. By + fixing up gd->ram_size the Linux kernel should gets passed + the now "corrected" memory size and won't touch it either. + This should work for arch/ppc and arch/powerpc. Only Linux + board ports in arch/powerpc with bootwrapper support that + recalculate the memory size from the SDRAM controller setup + will have to get fixed in Linux additionally. + + This option can be used as a workaround for the 440EPx/GRx + CHIP 11 errata where the last 256 bytes in SDRAM shouldn't + be touched. + + WARNING: Please make sure that this value is a multiple of + the Linux page size (normally 4k). If this is not the case, + then the end address of the Linux memory will be located at a + non page size aligned address and this could cause major + problems. + - CFG_TFTP_LOADADDR: Default load address for network file downloads @@ -1983,8 +2007,11 @@ Configuration Settings: - CFG_BOOTMAPSZ: Maximum size of memory mapped by the startup code of the Linux kernel; all data that must be processed by - the Linux kernel (bd_info, boot arguments, eventually - initrd image) must be put below this limit. + the Linux kernel (bd_info, boot arguments, FDT blob if + used) must be put below this limit, unless "bootm_low" + enviroment variable is defined and non-zero. In such case + all data for the Linux kernel must be between "bootm_low" + and "bootm_low" + CFG_BOOTMAPSZ. - CFG_MAX_FLASH_BANKS: Max number of Flash memory banks @@ -2029,6 +2056,13 @@ Configuration Settings: This option also enables the building of the cfi_flash driver in the drivers directory +- CFG_FLASH_USE_BUFFER_WRITE + Use buffered writes to flash. + +- CONFIG_FLASH_SPANSION_S29WS_N + s29ws-n MirrorBit flash has non-standard addresses for buffered + write commands. + - CFG_FLASH_QUIET_TEST If this option is defined, the common CFI flash doesn't print it's warning upon not recognized FLASH banks. This @@ -2722,6 +2756,20 @@ Some configuration options can be set using Environment Variables: bootfile - Name of the image to load with TFTP + bootm_low - Memory range available for image processing in the bootm + command can be restricted. This variable is given as + a hexadecimal number and defines lowest address allowed + for use by the bootm command. See also "bootm_size" + environment variable. Address defined by "bootm_low" is + also the base of the initial memory mapping for the Linux + kernel -- see the descripton of CFG_BOOTMAPSZ. + + bootm_size - Memory range available for image processing in the bootm + command can be restricted. This variable is given as + a hexadecimal number and defines the size of the region + allowed for use by the bootm command. See also "bootm_low" + environment variable. + autoload - if set to "no" (any string beginning with 'n'), "bootp" will just load perform a lookup of the configuration from the BOOTP server, but not try to