diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2020-08-09 14:58:05 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-09-21 08:11:54 +0000 |
| commit | 342d0a8365bc0a61936bfd1deba69dc0d4f68d05 (patch) | |
| tree | d6aaf21446aa3b3f8812c29c5d4cecf700c648f9 /src/include/cpu | |
| parent | d579a502d04c67ea9ead07c0035a18fa7a70dc30 (diff) | |
cpu/x86/smm.h: Add function to return the SMM save state revision
Change-Id: I3e4450088adbb654050e7420956cf58ee1170a98
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44318
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/include/cpu')
| -rw-r--r-- | src/include/cpu/x86/smm.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/include/cpu/x86/smm.h b/src/include/cpu/x86/smm.h index de16a431b3..1073d03e49 100644 --- a/src/include/cpu/x86/smm.h +++ b/src/include/cpu/x86/smm.h @@ -193,4 +193,9 @@ int smm_subregion(int sub, uintptr_t *start, size_t *size); /* Print the SMM memory layout on console. */ void smm_list_regions(void); +#define SMM_REVISION_OFFSET_FROM_TOP (0x8000 - 0x7efc) +/* Return the SMM save state revision. The revision can be fetched from the smm savestate + which is always at the same offset downward from the top of the save state. */ +uint32_t smm_revision(void); + #endif /* CPU_X86_SMM_H */ |