x86: Add documentation on the samus flashmap

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>

diff --git a/doc/README.x86 b/doc/README.x86
index fa49cb8b8a2affa03ce4aa42f9ce13fcffb8e5ef..8e0a3f36edfe29e8e956455a5b015b55db9a7242 100644 (file)
--- a/doc/README.x86
+++ b/doc/README.x86
@@ -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: