diff options
Diffstat (limited to 'src/cpu/x86/smm/smihandler.c')
| -rw-r--r-- | src/cpu/x86/smm/smihandler.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/cpu/x86/smm/smihandler.c b/src/cpu/x86/smm/smihandler.c index 8fd95bb563..8f7ebfbf66 100644 --- a/src/cpu/x86/smm/smihandler.c +++ b/src/cpu/x86/smm/smihandler.c @@ -120,6 +120,14 @@ static inline void *smm_save_state(uintptr_t base, int arch_offset, int node) return (void *)base; } +/* This returns the SMM revision from the savestate of CPU0, + which is assumed to be the same for all CPU's. See the memory + map in smmhandler.S */ +uint32_t smm_revision(void) +{ + return *(uint32_t *)(SMM_BASE + SMM_ENTRY_OFFSET * 2 - SMM_REVISION_OFFSET_FROM_TOP); +} + bool smm_region_overlaps_handler(const struct region *r) { const struct region r_smm = {SMM_BASE, SMM_DEFAULT_SIZE}; |