diff options
| author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-22 23:11:34 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-22 23:11:34 +0000 |
| commit | 93d451c67bbaea0739abf988cb5a90b98228a950 (patch) | |
| tree | abb6ed6717ac0de7a604cb5347bc4a428b7f2863 /ArmPlatformPkg/PrePeiCore/PrePeiCore.c | |
| parent | 8fc38a3f50915b6b11b48f830f6c7b091dbb35d8 (diff) | |
| download | edk2-93d451c67bbaea0739abf988cb5a90b98228a950.tar.gz edk2-93d451c67bbaea0739abf988cb5a90b98228a950.tar.bz2 edk2-93d451c67bbaea0739abf988cb5a90b98228a950.zip | |
ArmPlatformPkg/PrePeiCore: Reverse Stack & PeiTemporary
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
Diffstat (limited to 'ArmPlatformPkg/PrePeiCore/PrePeiCore.c')
| -rw-r--r-- | ArmPlatformPkg/PrePeiCore/PrePeiCore.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/ArmPlatformPkg/PrePeiCore/PrePeiCore.c b/ArmPlatformPkg/PrePeiCore/PrePeiCore.c index a61d0b8857..1927035365 100644 --- a/ArmPlatformPkg/PrePeiCore/PrePeiCore.c +++ b/ArmPlatformPkg/PrePeiCore/PrePeiCore.c @@ -24,14 +24,14 @@ #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 };
EFI_PEI_PPI_DESCRIPTOR gCommonPpiTable[] = {
{
EFI_PEI_PPI_DESCRIPTOR_PPI,
&gEfiTemporaryRamSupportPpiGuid,
- &mSecTemporaryRamSupportPpi
+ &mTemporaryRamSupportPpi
},
{
EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
@@ -85,23 +85,38 @@ CEntryPoint ( EFI_STATUS
EFIAPI
-SecTemporaryRamSupport (
+PrePeiCoreTemporaryRamSupport (
IN CONST EFI_PEI_SERVICES **PeiServices,
IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
IN UINTN CopySize
)
{
+ VOID *OldHeap;
+ VOID *NewHeap;
+ VOID *OldStack;
+ VOID *NewStack;
+
+ 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.
//
- // Migrate the whole temporary memory to permenent memory.
+ CopyMem (NewStack, OldStack, CopySize >> 1);
+
+ //
+ // Migrate the temporary memory heap to permanent memory heap.
//
- CopyMem (
- (VOID*)(UINTN)PermanentMemoryBase,
- (VOID*)(UINTN)TemporaryMemoryBase,
- CopySize
- );
+ CopyMem (NewHeap, OldHeap, CopySize >> 1);
+
+ SecSwitchStack ((UINTN)NewStack - (UINTN)OldStack);
- SecSwitchStack((UINTN)(PermanentMemoryBase - TemporaryMemoryBase));
+ return EFI_SUCCESS;
+}
EFI_STATUS
PrePeiCoreGetGlobalVariableMemory (
|