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| author | li-elvin <li-elvin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-02 11:34:35 +0000 |
|---|---|---|
| committer | li-elvin <li-elvin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-09-02 11:34:35 +0000 |
| commit | ab7017fe2bf2c1944090d347e7853e087d8641e8 (patch) | |
| tree | d7cd1ecb4d6cdf3784a139c33d1d7f1e615674a6 /MdeModulePkg/Universal/CapsulePei/X64 | |
| parent | 4ff7e37b4f7e336a8ecb7080b8f48eef4b52d396 (diff) | |
| download | edk2-platforms-ab7017fe2bf2c1944090d347e7853e087d8641e8.tar.xz | |
Add capsule > 4GB support. When capsule data is put above 4GB, IA32 PEI transfers to long mode to get capsule data.
Signed-off-by: li-elvin
Reviewed-by: lgao4, mdkinney
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12264 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Universal/CapsulePei/X64')
| -rw-r--r-- | MdeModulePkg/Universal/CapsulePei/X64/X64Entry.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/CapsulePei/X64/X64Entry.c b/MdeModulePkg/Universal/CapsulePei/X64/X64Entry.c new file mode 100644 index 0000000000..c64fe1017c --- /dev/null +++ b/MdeModulePkg/Universal/CapsulePei/X64/X64Entry.c @@ -0,0 +1,66 @@ +/** @file
+ The X64 entrypoint is used to process capsule in long mode.
+
+Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include "CommonHeader.h"
+
+/**
+ The X64 entrypoint is used to process capsule in long mode then
+ return to 32-bit protected mode.
+
+ @param EntrypointContext Pointer to the context of long mode.
+ @param ReturnContext Pointer to the context of 32-bit protected mode.
+
+ @retval This function should never return actually.
+
+**/
+EFI_STATUS
+EFIAPI
+_ModuleEntryPoint (
+ SWITCH_32_TO_64_CONTEXT *EntrypointContext,
+ SWITCH_64_TO_32_CONTEXT *ReturnContext
+)
+{
+ EFI_STATUS Status;
+
+ //
+ // Call CapsuleDataCoalesce to process capsule.
+ //
+ Status = CapsuleDataCoalesce (
+ NULL,
+ (EFI_PHYSICAL_ADDRESS *) (UINTN) EntrypointContext->BlockListAddr,
+ (VOID **) (UINTN) EntrypointContext->MemoryBase64Ptr,
+ (UINTN *) (UINTN) EntrypointContext->MemorySize64Ptr
+ );
+
+ ReturnContext->ReturnStatus = Status;
+
+ //
+ // Finish to coalesce capsule, and return to 32-bit mode.
+ //
+ AsmDisablePaging64 (
+ ReturnContext->ReturnCs,
+ (UINT32) ReturnContext->ReturnEntryPoint,
+ (UINT32) (UINTN) EntrypointContext,
+ (UINT32) (UINTN) ReturnContext,
+ (UINT32) (EntrypointContext->StackBufferBase + EntrypointContext->StackBufferLength)
+ );
+
+ //
+ // Should never be here.
+ //
+ ASSERT (FALSE);
+ return EFI_SUCCESS;
+}
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