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ArmPlatformPkg/PrePeiCore: Reverse Stack & PeiTemporary

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To get the global variable at top of the Primary Stack such as in the Pei module.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12421 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin 2011-09-22 23:11:34 +00:00
parent 8fc38a3f50
commit 93d451c67b
3 changed files with 31 additions and 16 deletions
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4
ArmPlatformPkg/PrePeiCore/MainMPCore.c
View File

@ -84,8 +84,8 @@ PrimaryMain (
SecCoreData.TemporaryRamSize = (UINTN)(UINTN)PcdGet32 (PcdCPUCorePrimaryStackSize); SecCoreData.TemporaryRamSize = (UINTN)(UINTN)PcdGet32 (PcdCPUCorePrimaryStackSize);
SecCoreData.PeiTemporaryRamBase = (VOID *)((UINTN)(SecCoreData.TemporaryRamBase) + (SecCoreData.TemporaryRamSize / 2)); SecCoreData.PeiTemporaryRamBase = (VOID *)((UINTN)(SecCoreData.TemporaryRamBase) + (SecCoreData.TemporaryRamSize / 2));
SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize / 2; SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize / 2;
SecCoreData.StackBase = SecCoreData.TemporaryRamBase; SecCoreData.StackBase = (VOID *)((UINTN)(SecCoreData.TemporaryRamBase) + (SecCoreData.TemporaryRamSize/2));
SecCoreData.StackSize = SecCoreData.TemporaryRamSize - SecCoreData.PeiTemporaryRamSize; SecCoreData.StackSize = SecCoreData.TemporaryRamSize / 2;
// Jump to PEI core entry point // Jump to PEI core entry point
(PeiCoreEntryPoint)(&SecCoreData, (VOID *)&gSecPpiTable); (PeiCoreEntryPoint)(&SecCoreData, (VOID *)&gSecPpiTable);

4
ArmPlatformPkg/PrePeiCore/MainUniCore.c
View File

@ -46,8 +46,8 @@ PrimaryMain (
SecCoreData.TemporaryRamSize = (UINTN)(UINTN)PcdGet32 (PcdCPUCorePrimaryStackSize); SecCoreData.TemporaryRamSize = (UINTN)(UINTN)PcdGet32 (PcdCPUCorePrimaryStackSize);
SecCoreData.PeiTemporaryRamBase = (VOID *)((UINTN)(SecCoreData.TemporaryRamBase) + (SecCoreData.TemporaryRamSize / 2)); SecCoreData.PeiTemporaryRamBase = (VOID *)((UINTN)(SecCoreData.TemporaryRamBase) + (SecCoreData.TemporaryRamSize / 2));
SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize / 2; SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize / 2;
SecCoreData.StackBase = SecCoreData.TemporaryRamBase; SecCoreData.StackBase = (VOID *)((UINTN)(SecCoreData.TemporaryRamBase) + (SecCoreData.TemporaryRamSize/2));
SecCoreData.StackSize = SecCoreData.TemporaryRamSize - SecCoreData.PeiTemporaryRamSize; SecCoreData.StackSize = SecCoreData.TemporaryRamSize / 2;
// jump to pei core entry point // jump to pei core entry point
(PeiCoreEntryPoint)(&SecCoreData, (VOID *)&gSecPpiTable); (PeiCoreEntryPoint)(&SecCoreData, (VOID *)&gSecPpiTable);

39
ArmPlatformPkg/PrePeiCore/PrePeiCore.c
View File

@ -24,14 +24,14 @@
#include "PrePeiCore.h" #include "PrePeiCore.h"
EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI mSecTemporaryRamSupportPpi = {SecTemporaryRamSupport}; EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI mTemporaryRamSupportPpi = { PrePeiCoreTemporaryRamSupport };
ARM_GLOBAL_VARIABLE_PPI mGlobalVariablePpi = { PrePeiCoreGetGlobalVariableMemory }; ARM_GLOBAL_VARIABLE_PPI mGlobalVariablePpi = { PrePeiCoreGetGlobalVariableMemory };
EFI_PEI_PPI_DESCRIPTOR gCommonPpiTable[] = { EFI_PEI_PPI_DESCRIPTOR gCommonPpiTable[] = {
{ {
EFI_PEI_PPI_DESCRIPTOR_PPI, EFI_PEI_PPI_DESCRIPTOR_PPI,
&gEfiTemporaryRamSupportPpiGuid, &gEfiTemporaryRamSupportPpiGuid,
&mSecTemporaryRamSupportPpi &mTemporaryRamSupportPpi
}, },
{ {
EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST, EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
@ -85,23 +85,38 @@ CEntryPoint (
EFI_STATUS EFI_STATUS
EFIAPI EFIAPI
SecTemporaryRamSupport ( PrePeiCoreTemporaryRamSupport (
IN CONST EFI_PEI_SERVICES **PeiServices, IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase, IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase, IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
IN UINTN CopySize IN UINTN CopySize
) )
{ {
// VOID *OldHeap;
// Migrate the whole temporary memory to permenent memory. VOID *NewHeap;
// VOID *OldStack;
CopyMem ( VOID *NewStack;
(VOID*)(UINTN)PermanentMemoryBase,
(VOID*)(UINTN)TemporaryMemoryBase,
CopySize
);
SecSwitchStack((UINTN)(PermanentMemoryBase - TemporaryMemoryBase)); OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;
NewHeap = (VOID*)((UINTN)PermanentMemoryBase + (CopySize >> 1));
OldStack = (VOID*)((UINTN)TemporaryMemoryBase + (CopySize >> 1));
NewStack = (VOID*)(UINTN)PermanentMemoryBase;
//
// Migrate the temporary memory stack to permanent memory stack.
//
CopyMem (NewStack, OldStack, CopySize >> 1);
//
// Migrate the temporary memory heap to permanent memory heap.
//
CopyMem (NewHeap, OldHeap, CopySize >> 1);
SecSwitchStack ((UINTN)NewStack - (UINTN)OldStack);
return EFI_SUCCESS;
}
EFI_STATUS EFI_STATUS
PrePeiCoreGetGlobalVariableMemory ( PrePeiCoreGetGlobalVariableMemory (