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cpu/x86/smm.h: Add function to return the SMM save state revision

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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>
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Arthur Heymans 2020-08-09 14:58:05 +02:00 • committed by Patrick Georgi
commit 342d0a8365
3 changed files with 20 additions and 0 deletions
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src/include/cpu/x86/smm.h
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@ -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 */