Revision: 17135
http://sourceforge.net/p/edk2/code/17135
Author: li-elvin
Date: 2015-04-09 07:50:34 +0000 (Thu, 09 Apr 2015)
Log Message:
-----------
IntelFrameworkModulePkg: add comments to clarify runtime memory usage for
legacy OS.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Elvin Li <[email protected]>
Reviewed-by: Star Zeng <[email protected]>
Modified Paths:
--------------
trunk/edk2/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
Modified:
trunk/edk2/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
===================================================================
--- trunk/edk2/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
2015-04-09 03:09:17 UTC (rev 17134)
+++ trunk/edk2/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
2015-04-09 07:50:34 UTC (rev 17135)
@@ -1613,6 +1613,12 @@
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;
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