diff options
| -rw-r--r-- | IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c index 6c2688b4a4..5575d2ec8e 100644 --- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c +++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c @@ -1613,6 +1613,12 @@ EfiMemoryTypeToE820Type ( case EfiBootServicesCode:
case EfiBootServicesData:
case EfiConventionalMemory:
+ //
+ // The memory of EfiRuntimeServicesCode and EfiRuntimeServicesData are
+ // usable memory for legacy OS.
+ // In ACPI specification, EfiRuntimeServiceCode and EfiRuntimeServiceData
+ // should be mapped to AddressRangeReserved. This statement is for UEFI OS, not for legacy OS.
+ //
case EfiRuntimeServicesCode:
case EfiRuntimeServicesData:
return EfiAcpiAddressRangeMemory;
|