/** @file\r
PEI Services Table Pointer Library for IA-32 and X64.\r
\r
+ According to PI specification, the peiservice pointer is stored prior at IDT\r
+ table in IA32 and x64 architecture.\r
+ \r
Copyright (c) 2006 - 2007, Intel Corporation.<BR>\r
All rights reserved. This program and the accompanying materials \r
are licensed and made available under the terms and conditions of the BSD License \r
\r
**/\r
\r
-#include "InternalPeiServicesTablePointer.h"\r
+#include <PiPei.h>\r
+\r
+#include <Library/BaseLib.h>\r
+#include <Library/PeiServicesTablePointerLib.h>\r
+#include <Library/DebugLib.h>\r
\r
/**\r
\r
base addres is used to save the EFI_PEI_SERVICES**.\r
For x64, the eight-bytes field immediately prior to new IDT\r
base addres is used to save the EFI_PEI_SERVICES**\r
- @retval The pointer to PeiServices.\r
+ \r
+ @return The pointer to PeiServices.\r
\r
**/\r
-EFI_PEI_SERVICES **\r
+CONST EFI_PEI_SERVICES **\r
EFIAPI\r
GetPeiServicesTablePointer (\r
VOID\r
)\r
{\r
- EFI_PEI_SERVICES **PeiServices;\r
+ CONST EFI_PEI_SERVICES **PeiServices;\r
IA32_DESCRIPTOR Idtr;\r
\r
AsmReadIdtr (&Idtr);\r
- PeiServices = (EFI_PEI_SERVICES **) (*(UINTN*)(Idtr.Base - 4));\r
+ PeiServices = (CONST EFI_PEI_SERVICES **) (*(UINTN*)(Idtr.Base - sizeof (UINTN)));\r
ASSERT (PeiServices != NULL);\r
return PeiServices;\r
}\r
\r
/**\r
\r
- The function returns the pointer to PeiServicee following\r
+ The function sets the pointer to PeiServicee following\r
PI1.0.\r
\r
For IA32, the four-bytes field immediately prior to new IDT\r
base addres is used to save the EFI_PEI_SERVICES**.\r
For x64, the eight-bytes field immediately prior to new IDT\r
base addres is used to save the EFI_PEI_SERVICES**\r
- @retval The pointer to PeiServices.\r
+ \r
+ @param PeiServicesTablePointer The pointer to PeiServices.\r
\r
**/\r
VOID\r
EFIAPI\r
SetPeiServicesTablePointer (\r
- EFI_PEI_SERVICES ** PeiServicesTablePointer\r
+ IN CONST EFI_PEI_SERVICES ** PeiServicesTablePointer\r
)\r
{\r
IA32_DESCRIPTOR Idtr;\r
\r
AsmReadIdtr (&Idtr);\r
- (*(UINTN*)(Idtr.Base - 4)) = (UINTN)PeiServicesTablePointer;\r
+ (*(UINTN*)(Idtr.Base - sizeof (UINTN))) = (UINTN)PeiServicesTablePointer;\r
}\r
\r
-/**\r
- After memory initialization in PEI phase, the IDT table in temporary memory should \r
- be migrated to memory, and the address of PeiServicesPointer also need to be updated \r
- immediately preceding the new IDT table.\r
- \r
- @param PeiServices The address of PeiServices pointer.\r
-**/\r
-VOID\r
-EFIAPI\r
-MigrateIdtTable (\r
- IN EFI_PEI_SERVICES **PeiServices\r
- )\r
-{\r
- UINTN Size;\r
- VOID *NewBase;\r
- EFI_STATUS Status;\r
- IA32_DESCRIPTOR Idtr;\r
- \r
- AsmReadIdtr (&Idtr);\r
- \r
- Size = sizeof(UINTN) + (Idtr.Limit + 1); \r
- \r
- Status = PeiServicesAllocatePool (Size, &NewBase);\r
- ASSERT_EFI_ERROR (Status);\r
- \r
- CopyMem ((VOID*)((UINTN)NewBase + sizeof(UINTN)), (VOID*)Idtr.Base, (Idtr.Limit + 1));\r
- \r
- Idtr.Base = (UINTN)NewBase + sizeof(UINTN);\r
- AsmWriteIdtr (&Idtr);\r
- SetPeiServicesTablePointer(PeiServices); \r
-} \r
\r