/** @file\r
\r
- Copyright (c) 2014 - 2018, 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 - 2022, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "SecMain.h"\r
#include "SecFsp.h"\r
\r
-EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI gSecTemporaryRamSupportPpi = {\r
+EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI gSecTemporaryRamSupportPpi = {\r
SecTemporaryRamSupport\r
};\r
\r
-EFI_PEI_PPI_DESCRIPTOR mPeiSecPlatformInformationPpi[] = {\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
VOID\r
EFIAPI\r
SecStartup (\r
- IN UINT32 SizeOfRam,\r
- IN UINT32 TempRamBase,\r
- IN VOID *BootFirmwareVolume,\r
- IN PEI_CORE_ENTRY PeiCore,\r
- IN UINT32 BootLoaderStack,\r
- IN UINT32 ApiIdx\r
+ IN UINT32 SizeOfRam,\r
+ IN UINT32 TempRamBase,\r
+ IN VOID *BootFirmwareVolume,\r
+ IN PEI_CORE_ENTRY PeiCore,\r
+ IN UINTN BootLoaderStack,\r
+ IN UINT32 ApiIdx\r
)\r
{\r
- EFI_SEC_PEI_HAND_OFF SecCoreData;\r
- IA32_DESCRIPTOR IdtDescriptor;\r
- SEC_IDT_TABLE IdtTableInStack;\r
- UINT32 Index;\r
- FSP_GLOBAL_DATA PeiFspData;\r
- UINT64 ExceptionHandler;\r
+ EFI_SEC_PEI_HAND_OFF SecCoreData;\r
+ IA32_DESCRIPTOR IdtDescriptor;\r
+ SEC_IDT_TABLE IdtTableInStack;\r
+ UINT32 Index;\r
+ FSP_GLOBAL_DATA PeiFspData;\r
+ IA32_IDT_GATE_DESCRIPTOR 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
// | |\r
// | |\r
- // | Heap | PeiTemporayRamSize\r
+ // | Heap | PeiTemporaryRamSize\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
+ IdtTableInStack.PeiService = 0;\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 (IA32_IDT_GATE_DESCRIPTOR));\r
+ }\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.Base = (UINTN)&IdtTableInStack.IdtTable;\r
+ IdtDescriptor.Limit = (UINT16)(IdtSize - 1);\r
\r
AsmWriteIdtr (&IdtDescriptor);\r
\r
SecCoreData.BootFirmwareVolumeBase = BootFirmwareVolume;\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
+ //\r
+ // Support FSP reserved temporary memory from the whole temporary memory provided by bootloader.\r
+ // FSP reserved temporary memory will not be given to PeiCore.\r
+ //\r
+ SecCoreData.TemporaryRamBase = (UINT8 *)(UINTN)TempRamBase + PcdGet32 (PcdFspPrivateTemporaryRamSize);\r
+ SecCoreData.TemporaryRamSize = SizeOfRam - PcdGet32 (PcdFspPrivateTemporaryRamSize);\r
+ if (PcdGet8 (PcdFspHeapSizePercentage) == 0) {\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.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
EFI_STATUS\r
EFIAPI\r
SecTemporaryRamSupport (\r
- IN CONST EFI_PEI_SERVICES **PeiServices,\r
- IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,\r
- IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,\r
- IN UINTN CopySize\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,\r
+ IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,\r
+ IN UINTN CopySize\r
)\r
{\r
- IA32_DESCRIPTOR IdtDescriptor;\r
- VOID* OldHeap;\r
- VOID* NewHeap;\r
- VOID* OldStack;\r
- VOID* NewStack;\r
- UINTN HeapSize;\r
- UINTN StackSize;\r
+ IA32_DESCRIPTOR IdtDescriptor;\r
+ VOID *OldHeap;\r
+ VOID *NewHeap;\r
+ VOID *OldStack;\r
+ VOID *NewStack;\r
+ UINTN HeapSize;\r
+ UINTN StackSize;\r
+\r
+ UINTN CurrentStack;\r
+ UINTN FspStackBase;\r
\r
- HeapSize = CopySize * PcdGet8 (PcdFspHeapSizePercentage) / 100 ;\r
- StackSize = CopySize - HeapSize;\r
+ //\r
+ // Override OnSeparateStack to 1 because this function will switch stack to permanent memory\r
+ // which makes FSP running on different stack from bootloader temporary ram stack.\r
+ //\r
+ GetFspGlobalDataPointer ()->OnSeparateStack = 1;\r
+\r
+ if (PcdGet8 (PcdFspHeapSizePercentage) == 0) {\r
+ CurrentStack = AsmReadStackPointer ();\r
+ FspStackBase = (UINTN)GetFspEntryStack ();\r
+\r
+ StackSize = FspStackBase - CurrentStack;\r
+ HeapSize = CopySize;\r
\r
- OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;\r
- NewHeap = (VOID*)((UINTN)PermanentMemoryBase + StackSize);\r
+ OldHeap = (VOID *)(UINTN)TemporaryMemoryBase;\r
+ NewHeap = (VOID *)((UINTN)PermanentMemoryBase);\r
\r
- OldStack = (VOID*)((UINTN)TemporaryMemoryBase + HeapSize);\r
- NewStack = (VOID*)(UINTN)PermanentMemoryBase;\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
+ } 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
CopyMem (NewStack, OldStack, StackSize);\r
\r
-\r
//\r
// We need *not* fix the return address because currently,\r
// The PeiCore is executed in flash.\r
// permanent memory.\r
//\r
SecSwitchStack (\r
- (UINT32) (UINTN) OldStack,\r
- (UINT32) (UINTN) NewStack\r
+ (UINTN)OldStack,\r
+ (UINTN)NewStack\r
);\r
\r
return EFI_SUCCESS;\r
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