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x86: Add documentation on the samus flashmap

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There are quite a few variables which control where things appear in the
final ROM image. Add a flashmap in the documentation to make this easier
to figure out.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: squashed "x86: Update the memory map a little" in]
[bmeng: fixed typo of 'documentation' in the commit title]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2019-05-02 10:52:16 -06:00 committed by Bin Meng
parent 6c456516e2
commit d4d2521c06
1 changed files with 16 additions and 0 deletions
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doc/README.x86
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@ -185,6 +185,22 @@ If you are using em100, then this command will flash write -Boot:
em100 -s -d filename.rom -c W25Q64CV -r
Flash map for samus / broadwell:
fffff800 SYS_X86_START16
ffff0000 RESET_SEG_START
fffd8000 TPL_TEXT_BASE
fffa0000 X86_MRC_ADDR
fff90000 VGA_BIOS_ADDR
ffed0000 SYS_TEXT_BASE
ffea0000 X86_REFCODE_ADDR
ffe70000 SPL_TEXT_BASE
ffbf8000 CONFIG_ENV_OFFSET (environemnt offset)
ffbe0000 rw-mrc-cache (Memory-reference-code cache)
ffa00000 <spare>
ff801000 intel-me (address set by descriptor.bin)
ff800000 intel-descriptor
---
Intel Crown Bay specific instructions for bare mode: