diff options
Diffstat (limited to 'OvmfPkg/Sec/AmdSev.h')
| -rw-r--r-- | OvmfPkg/Sec/AmdSev.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/OvmfPkg/Sec/AmdSev.h b/OvmfPkg/Sec/AmdSev.h index f75877096e..c5ab0d5a0b 100644 --- a/OvmfPkg/Sec/AmdSev.h +++ b/OvmfPkg/Sec/AmdSev.h @@ -91,4 +91,18 @@ SevSnpIsEnabled ( VOID
);
+/**
+ Map MMIO regions unencrypted if SEV-ES is active.
+
+ During early booting, page table entries default to having the encryption bit
+ set for SEV-ES/SEV-SNP guests. In cases where there is MMIO to an address, the
+ encryption bit should be cleared. Clear it here for any known MMIO accesses
+ during SEC, which is currently just the APIC base address.
+
+**/
+VOID
+SecMapApicBaseUnencrypted (
+ VOID
+ );
+
#endif
|