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x86: Add ROM image description for minnowmax

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The layout of the ROM is a bit hard to discover by reading the code. Add
a table to make it easier.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2015-07-03 18:28:24 -06:00
parent d5359f2e4d
commit 537ccba2a4
1 changed files with 17 additions and 0 deletions
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doc/README.x86
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@ -164,6 +164,23 @@ Now you can build U-Boot and obtain u-boot.rom
$ make minnowmax_defconfig
$ make all
The ROM image is broken up into these parts:
Offset Description Controlling config
------------------------------------------------------------
000000 descriptor.bin Hard-coded to 0 in ifdtool
001000 me.bin Set by the descriptor
500000 <spare>
700000 u-boot-dtb.bin CONFIG_SYS_TEXT_BASE
790000 vga.bin CONFIG_X86_OPTION_ROM_ADDR
7c0000 fsp.bin CONFIG_FSP_ADDR
7f8000 <spare> (depends on size of fsp.bin)
7fe000 Environment CONFIG_ENV_OFFSET
7ff800 U-Boot 16-bit boot CONFIG_SYS_X86_START16
Overall ROM image size is controlled by CONFIG_ROM_SIZE.
Intel Galileo instructions:
Only one binary blob is needed for Remote Management Unit (RMU) within Intel