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MdeModulePkg: Add PcdDxeIplBuildPageTables for DxeIpl X64 to optionally not rebuild the page tables.

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signed-off-by: andrewfish
reviewed-by: rsun3



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12016 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
andrewfish
2011-07-14 02:31:02 +00:00
parent c4c085a2a6
commit e47f0da408
3 changed files with 20 additions and 7 deletions
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16
MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c
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@@ -52,18 +52,22 @@ HandOffToDxeCore (
TopOfStack = (VOID *) ((UINTN) BaseOfStack + EFI_SIZE_TO_PAGES (STACK_SIZE) * EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);
TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);
//
// Create page table and save PageMapLevel4 to CR3
//
PageTables = CreateIdentityMappingPageTables ();
if (FeaturePcdGet (PcdDxeIplBuildPageTables)) {
//
// Create page table and save PageMapLevel4 to CR3
//
PageTables = CreateIdentityMappingPageTables ();
}
//
// End of PEI phase signal
//
Status = PeiServicesInstallPpi (&gEndOfPeiSignalPpi);
ASSERT_EFI_ERROR (Status);
AsmWriteCr3 (PageTables);
if (FeaturePcdGet (PcdDxeIplBuildPageTables)) {
AsmWriteCr3 (PageTables);
}
//
// Update the contents of BSP stack HOB to reflect the real stack info passed to DxeCore.