/** @file\r
\r
- Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials\r
- are licensed and made available under the terms and conditions of the BSD License\r
- which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php.\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+ Copyright (c) 2014 - 2019, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
};\r
\r
EFI_PEI_PPI_DESCRIPTOR mPeiSecPlatformInformationPpi[] = {\r
+ {\r
+ EFI_PEI_PPI_DESCRIPTOR_PPI,\r
+ &gFspInApiModePpiGuid,\r
+ NULL\r
+ },\r
{\r
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
&gEfiTemporaryRamSupportPpiGuid,\r
\r
\r
@param[in] SizeOfRam Size of the temporary memory available for use.\r
- @param[in] TempRamBase Base address of tempory ram\r
+ @param[in] TempRamBase Base address of temporary ram\r
@param[in] BootFirmwareVolume Base address of the Boot Firmware Volume.\r
@param[in] PeiCore PeiCore entry point.\r
@param[in] BootLoaderStack BootLoader stack.\r
UINT32 Index;\r
FSP_GLOBAL_DATA PeiFspData;\r
UINT64 ExceptionHandler;\r
+ UINTN IdtSize;\r
\r
//\r
// Process all libraries constructor function linked to SecCore.\r
//\r
InitializeFloatingPointUnits ();\r
\r
+ //\r
+ // Scenario 1 memory map when running on bootloader stack\r
+ //\r
+ // |-------------------|---->\r
+ // |Idt Table |\r
+ // |-------------------|\r
+ // |PeiService Pointer |\r
+ // |-------------------|\r
+ // | |\r
+ // | |\r
+ // | Heap |\r
+ // | |\r
+ // | |\r
+ // |-------------------|----> TempRamBase\r
+ //\r
+ //\r
+ // |-------------------|\r
+ // |Bootloader stack |----> somewhere in memory, FSP will share this stack.\r
+ // |-------------------|\r
\r
+ //\r
+ // Scenario 2 memory map when running FSP on a separate stack\r
+ //\r
// |-------------------|---->\r
// |Idt Table |\r
// |-------------------|\r
// | |\r
// |-------------------|----> TempRamBase\r
IdtTableInStack.PeiService = NULL;\r
- ExceptionHandler = FspGetExceptionHandler(mIdtEntryTemplate);\r
- for (Index = 0; Index < SEC_IDT_ENTRY_COUNT; Index ++) {\r
- CopyMem ((VOID*)&IdtTableInStack.IdtTable[Index], (VOID*)&ExceptionHandler, sizeof (UINT64));\r
+ AsmReadIdtr (&IdtDescriptor);\r
+ if (IdtDescriptor.Base == 0) {\r
+ ExceptionHandler = FspGetExceptionHandler(mIdtEntryTemplate);\r
+ for (Index = 0; Index < FixedPcdGet8(PcdFspMaxInterruptSupported); Index ++) {\r
+ CopyMem ((VOID*)&IdtTableInStack.IdtTable[Index], (VOID*)&ExceptionHandler, sizeof (UINT64));\r
+ }\r
+ IdtSize = sizeof (IdtTableInStack.IdtTable);\r
+ } else {\r
+ IdtSize = IdtDescriptor.Limit + 1;\r
+ if (IdtSize > sizeof (IdtTableInStack.IdtTable)) {\r
+ //\r
+ // ERROR: IDT table size from boot loader is larger than FSP can support, DeadLoop here!\r
+ //\r
+ CpuDeadLoop();\r
+ } else {\r
+ CopyMem ((VOID *) (UINTN) &IdtTableInStack.IdtTable, (VOID *) IdtDescriptor.Base, IdtSize);\r
+ }\r
}\r
-\r
IdtDescriptor.Base = (UINTN) &IdtTableInStack.IdtTable;\r
- IdtDescriptor.Limit = (UINT16)(sizeof (IdtTableInStack.IdtTable) - 1);\r
+ IdtDescriptor.Limit = (UINT16)(IdtSize - 1);\r
\r
AsmWriteIdtr (&IdtDescriptor);\r
\r
SecCoreData.BootFirmwareVolumeSize = (UINT32)((EFI_FIRMWARE_VOLUME_HEADER *)BootFirmwareVolume)->FvLength;\r
\r
SecCoreData.TemporaryRamBase = (VOID*)(UINTN) TempRamBase;\r
- SecCoreData.TemporaryRamSize = SizeOfRam;\r
- SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;\r
- SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize * PcdGet8 (PcdFspHeapSizePercentage) / 100;\r
- SecCoreData.StackBase = (VOID*)(UINTN)((UINTN)SecCoreData.TemporaryRamBase + SecCoreData.PeiTemporaryRamSize);\r
- SecCoreData.StackSize = SecCoreData.TemporaryRamSize - SecCoreData.PeiTemporaryRamSize;\r
+ if (PcdGet8 (PcdFspHeapSizePercentage) == 0) {\r
+ SecCoreData.TemporaryRamSize = SizeOfRam; // stack size that is going to be copied to the permanent memory\r
+ SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;\r
+ SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize;\r
+ SecCoreData.StackBase = (VOID *)GetFspEntryStack(); // Share the same boot loader stack\r
+ SecCoreData.StackSize = 0;\r
+ } else {\r
+ SecCoreData.TemporaryRamSize = SizeOfRam;\r
+ SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;\r
+ SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize * PcdGet8 (PcdFspHeapSizePercentage) / 100;\r
+ SecCoreData.StackBase = (VOID*)(UINTN)((UINTN)SecCoreData.TemporaryRamBase + SecCoreData.PeiTemporaryRamSize);\r
+ SecCoreData.StackSize = SecCoreData.TemporaryRamSize - SecCoreData.PeiTemporaryRamSize;\r
+ }\r
\r
DEBUG ((DEBUG_INFO, "Fsp BootFirmwareVolumeBase - 0x%x\n", SecCoreData.BootFirmwareVolumeBase));\r
DEBUG ((DEBUG_INFO, "Fsp BootFirmwareVolumeSize - 0x%x\n", SecCoreData.BootFirmwareVolumeSize));\r
\r
//\r
// Call PeiCore Entry\r
- // \r
+ //\r
PeiCore (&SecCoreData, mPeiSecPlatformInformationPpi);\r
\r
//\r
UINTN HeapSize;\r
UINTN StackSize;\r
\r
- HeapSize = CopySize * PcdGet8 (PcdFspHeapSizePercentage) / 100 ;\r
- StackSize = CopySize - HeapSize;\r
- \r
- OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;\r
- NewHeap = (VOID*)((UINTN)PermanentMemoryBase + StackSize);\r
+ UINTN CurrentStack;\r
+ UINTN FspStackBase;\r
+\r
+ if (PcdGet8 (PcdFspHeapSizePercentage) == 0) {\r
\r
- OldStack = (VOID*)((UINTN)TemporaryMemoryBase + HeapSize);\r
- NewStack = (VOID*)(UINTN)PermanentMemoryBase;\r
+ CurrentStack = AsmReadEsp();\r
+ FspStackBase = (UINTN)GetFspEntryStack();\r
\r
+ StackSize = FspStackBase - CurrentStack;\r
+ HeapSize = CopySize;\r
+\r
+ OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;\r
+ NewHeap = (VOID*)((UINTN)PermanentMemoryBase);\r
+\r
+ OldStack = (VOID*)CurrentStack;\r
+ //\r
+ //The old stack is copied at the end of the stack region because stack grows down.\r
+ //\r
+ NewStack = (VOID*)((UINTN)PermanentMemoryBase - StackSize);\r
+\r
+ } else {\r
+ HeapSize = CopySize * PcdGet8 (PcdFspHeapSizePercentage) / 100 ;\r
+ StackSize = CopySize - HeapSize;\r
+\r
+ OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;\r
+ NewHeap = (VOID*)((UINTN)PermanentMemoryBase + StackSize);\r
+\r
+ OldStack = (VOID*)((UINTN)TemporaryMemoryBase + HeapSize);\r
+ NewStack = (VOID*)(UINTN)PermanentMemoryBase;\r
+\r
+ }\r
//\r
// Migrate Heap\r
//\r
\r
//\r
// SecSwitchStack function must be invoked after the memory migration\r
- // immediatly, also we need fixup the stack change caused by new call into\r
- // permenent memory.\r
+ // immediately, also we need fixup the stack change caused by new call into\r
+ // permanent memory.\r
//\r
SecSwitchStack (\r
(UINT32) (UINTN) OldStack,\r
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