X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;ds=inline;f=README;h=51eb71b27c5de9015bd7676f79930b6c16fb2a75;hb=41ef372c1a2d344621c74aa4bce5cdb0970ba5f1;hp=ef8571c8981e0a992d084ec1f4579dc50e363afd;hpb=06fd853890f23491605bfd6c9ab0116b79e15aaa;p=u-boot diff --git a/README b/README index ef8571c898..51eb71b27c 100644 --- a/README +++ b/README @@ -616,6 +616,14 @@ The following options need to be configured: boot loader that has already initialized the UART. Define this variable to flush the UART at init time. + CONFIG_SYS_NS16550_BROKEN_TEMT + + 16550 UART set the Transmitter Empty (TEMT) Bit when all output + has finished and the transmitter is totally empty. U-Boot waits + for this bit to be set to initialize the serial console. On some + broken platforms this bit is not set in SPL making U-Boot to + hang while waiting for TEMT. Define this option to avoid it. + - Console Interface: Depending on board, define exactly one serial port @@ -834,7 +842,8 @@ The following options need to be configured: CONFIG_CMD_I2C * I2C serial bus support CONFIG_CMD_IDE * IDE harddisk support CONFIG_CMD_IMI iminfo - CONFIG_CMD_IMLS List all found images + CONFIG_CMD_IMLS List all images found in NOR flash + CONFIG_CMD_IMLS_NAND List all images found in NAND flash CONFIG_CMD_IMMAP * IMMR dump support CONFIG_CMD_IMPORTENV * import an environment CONFIG_CMD_INI * import data from an ini file into the env @@ -849,6 +858,7 @@ The following options need to be configured: CONFIG_CMD_LOADS loads CONFIG_CMD_MD5SUM print md5 message digest (requires CONFIG_CMD_MEMORY and CONFIG_MD5) + CONFIG_CMD_MEMINFO * Display detailed memory information CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, loop, loopw, mtest CONFIG_CMD_MISC Misc functions like sleep etc @@ -2413,6 +2423,11 @@ CBFS (Coreboot Filesystem) support CONFIG_SF_DEFAULT_MODE (see include/spi.h) CONFIG_SF_DEFAULT_SPEED in Hz + CONFIG_CMD_SF_TEST + + Define this option to include a destructive SPI flash + test ('sf test'). + - SystemACE Support: CONFIG_SYSTEMACE @@ -2700,10 +2715,13 @@ FIT uImage format: CONFIG_FB_ADDR Define CONFIG_FB_ADDR if you want to use specific - address for frame buffer. - Then system will reserve the frame buffer address to - defined address instead of lcd_setmem (this function - grabs the memory for frame buffer by panel's size). + address for frame buffer. This is typically the case + when using a graphics controller has separate video + memory. U-Boot will then place the frame buffer at + the given address instead of dynamically reserving it + in system RAM by calling lcd_setmem(), which grabs + the memory for the frame buffer depending on the + configured panel size. Please see board_init_f function. @@ -2802,6 +2820,12 @@ FIT uImage format: CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME Filename to read to load U-Boot when reading from FAT + CONFIG_SPL_MPC83XX_WAIT_FOR_NAND + Set this for NAND SPL on PPC mpc83xx targets, so that + start.S waits for the rest of the SPL to load before + continuing (the hardware starts execution after just + loading the first page rather than the full 4K). + CONFIG_SPL_NAND_BASE Include nand_base.c in the SPL. Requires CONFIG_SPL_NAND_DRIVERS. @@ -2859,6 +2883,10 @@ FIT uImage format: CONFIG_SPL_LIBGENERIC_SUPPORT Support for lib/libgeneric.o in SPL binary + CONFIG_SPL_PAD_TO + Linker address to which the SPL should be padded before + appending the SPL payload. + CONFIG_SPL_TARGET Final target image containing SPL and payload. Some SPLs use an arch-specific makefile fragment instead, for @@ -3457,6 +3485,16 @@ use the "saveenv" command to store a valid environment. space for already greatly restricted images, including but not limited to NAND_SPL configurations. +- CONFIG_DISPLAY_BOARDINFO + Display information about the board that U-Boot is running on + when U-Boot starts up. The board function checkboard() is called + to do this. + +- CONFIG_DISPLAY_BOARDINFO_LATE + Similar to the previous option, but display this information + later, once stdio is running and output goes to the LCD, if + present. + Low Level (hardware related) configuration options: --------------------------------------------------- @@ -3773,20 +3811,24 @@ Low Level (hardware related) configuration options: that is executed before the actual U-Boot. E.g. when compiling a NAND SPL. +- CONFIG_ARCH_MAP_SYSMEM + Generally U-Boot (and in particular the md command) uses + effective address. It is therefore not necessary to regard + U-Boot address as virtual addresses that need to be translated + to physical addresses. However, sandbox requires this, since + it maintains its own little RAM buffer which contains all + addressable memory. This option causes some memory accesses + to be mapped through map_sysmem() / unmap_sysmem(). + - CONFIG_USE_ARCH_MEMCPY CONFIG_USE_ARCH_MEMSET If these options are used a optimized version of memcpy/memset will be used if available. These functions may be faster under some conditions but may increase the binary size. -- CONFIG_X86_NO_RESET_VECTOR - If defined, the x86 reset vector code is excluded. You will need - to do this when U-Boot is running from Coreboot. - -- CONFIG_X86_NO_REAL_MODE - If defined, x86 real mode code is omitted. This assumes a - 32-bit environment where such code is not needed. You will - need to do this when U-Boot is running from Coreboot. +- CONFIG_X86_RESET_VECTOR + If defined, the x86 reset vector code is included. This is not + needed when U-Boot is running from Coreboot. Freescale QE/FMAN Firmware Support: