--- /dev/null
+/** @file\r
+ C functions in SEC\r
+\r
+ Copyright (c) 2014, 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
+\r
+**/\r
+\r
+\r
+#include "SecMain.h"\r
+\r
+EFI_PEI_PPI_DESCRIPTOR mPeiSecMainPpi[] = {\r
+ {\r
+ EFI_PEI_PPI_DESCRIPTOR_PPI,\r
+ &gTopOfTemporaryRamPpiGuid,\r
+ NULL // To be patched later.\r
+ },\r
+ {\r
+ EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,\r
+ &gFspInitDonePpiGuid,\r
+ &gFspInitDonePpi\r
+ },\r
+};\r
+\r
+//\r
+// These are IDT entries pointing to 10:FFFFFFE4h.\r
+//\r
+UINT64 mIdtEntryTemplate = 0xffff8e000010ffe4ULL;\r
+\r
+/**\r
+ Caller provided function to be invoked at the end of InitializeDebugAgent().\r
+\r
+ Entry point to the C language phase of SEC. After the SEC assembly\r
+ code has initialized some temporary memory and set up the stack,\r
+ the control is transferred to this function.\r
+\r
+ @param[in] Context The first input parameter of InitializeDebugAgent().\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+SecStartupPhase2(\r
+ IN VOID *Context\r
+ );\r
+\r
+\r
+/**\r
+\r
+ Entry point to the C language phase of SEC. After the SEC assembly\r
+ code has initialized some temporary memory and set up the stack,\r
+ the control is transferred to this function.\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] BootFirmwareVolume Base address of the Boot Firmware Volume.\r
+**/\r
+VOID\r
+EFIAPI\r
+SecStartup (\r
+ IN UINT32 SizeOfRam,\r
+ IN UINT32 TempRamBase,\r
+ IN VOID *BootFirmwareVolume\r
+ )\r
+{\r
+ EFI_SEC_PEI_HAND_OFF SecCoreData;\r
+ IA32_DESCRIPTOR IdtDescriptor;\r
+ SEC_IDT_TABLE IdtTableInStack;\r
+ UINT32 Index;\r
+ UINT32 PeiStackSize;\r
+\r
+ PeiStackSize = PcdGet32 (PcdPeiTemporaryRamStackSize);\r
+ if (PeiStackSize == 0) {\r
+ PeiStackSize = (SizeOfRam >> 1);\r
+ }\r
+\r
+ ASSERT (PeiStackSize < SizeOfRam);\r
+\r
+ //\r
+ // Process all libraries constructor function linked to SecCore.\r
+ //\r
+ ProcessLibraryConstructorList ();\r
+\r
+ DEBUG ((DEBUG_INFO, "FspPei - SecStartup\n"));\r
+\r
+ //\r
+ // Initialize floating point operating environment\r
+ // to be compliant with UEFI spec.\r
+ //\r
+ InitializeFloatingPointUnits ();\r
+\r
+\r
+ // |-------------------|---->\r
+ // |Idt Table |\r
+ // |-------------------|\r
+ // |PeiService Pointer | PeiStackSize\r
+ // |-------------------|\r
+ // | |\r
+ // | Stack |\r
+ // |-------------------|---->\r
+ // | |\r
+ // | |\r
+ // | Heap | PeiTemporayRamSize\r
+ // | |\r
+ // | |\r
+ // |-------------------|----> TempRamBase\r
+\r
+ IdtTableInStack.PeiService = 0;\r
+ for (Index = 0; Index < SEC_IDT_ENTRY_COUNT; Index ++) {\r
+ CopyMem ((VOID*)&IdtTableInStack.IdtTable[Index], (VOID*)&mIdtEntryTemplate, sizeof (UINT64));\r
+ }\r
+\r
+ IdtDescriptor.Base = (UINTN) &IdtTableInStack.IdtTable;\r
+ IdtDescriptor.Limit = (UINT16)(sizeof (IdtTableInStack.IdtTable) - 1);\r
+\r
+ AsmWriteIdtr (&IdtDescriptor);\r
+\r
+ //\r
+ // Update the base address and length of Pei temporary memory\r
+ //\r
+ SecCoreData.DataSize = (UINT16) sizeof (EFI_SEC_PEI_HAND_OFF);\r
+ SecCoreData.BootFirmwareVolumeBase = BootFirmwareVolume;\r
+ SecCoreData.BootFirmwareVolumeSize = (UINTN)(SIZE_4GB - (UINTN) BootFirmwareVolume);\r
+ SecCoreData.TemporaryRamBase = (VOID*)(UINTN) TempRamBase;\r
+ SecCoreData.TemporaryRamSize = SizeOfRam;\r
+ SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;\r
+ SecCoreData.PeiTemporaryRamSize = SizeOfRam - PeiStackSize;\r
+ SecCoreData.StackBase = (VOID*)(UINTN)(TempRamBase + SecCoreData.PeiTemporaryRamSize);\r
+ SecCoreData.StackSize = PeiStackSize;\r
+\r
+ DEBUG ((DEBUG_INFO, "BootFirmwareVolumeBase - 0x%x\n", SecCoreData.BootFirmwareVolumeBase));\r
+ DEBUG ((DEBUG_INFO, "BootFirmwareVolumeSize - 0x%x\n", SecCoreData.BootFirmwareVolumeSize));\r
+ DEBUG ((DEBUG_INFO, "TemporaryRamBase - 0x%x\n", SecCoreData.TemporaryRamBase));\r
+ DEBUG ((DEBUG_INFO, "TemporaryRamSize - 0x%x\n", SecCoreData.TemporaryRamSize));\r
+ DEBUG ((DEBUG_INFO, "PeiTemporaryRamBase - 0x%x\n", SecCoreData.PeiTemporaryRamBase));\r
+ DEBUG ((DEBUG_INFO, "PeiTemporaryRamSize - 0x%x\n", SecCoreData.PeiTemporaryRamSize));\r
+ DEBUG ((DEBUG_INFO, "StackBase - 0x%x\n", SecCoreData.StackBase));\r
+ DEBUG ((DEBUG_INFO, "StackSize - 0x%x\n", SecCoreData.StackSize));\r
+\r
+ //\r
+ // Initialize Debug Agent to support source level debug in SEC/PEI phases before memory ready.\r
+ //\r
+ InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, &SecCoreData, SecStartupPhase2);\r
+\r
+}\r
+\r
+/**\r
+ This API patch the TopOfTemporaryRam value in SecPpiList.\r
+\r
+ @param[in,out] SecPpiList PPI list to be patched.\r
+ @param[in] TopOfTemporaryRam The top of Temporary Ram.\r
+\r
+**/\r
+VOID\r
+PatchTopOfTemporaryRamPpi (\r
+ IN OUT EFI_PEI_PPI_DESCRIPTOR *SecPpiList,\r
+ IN VOID *TopOfTemporaryRam\r
+ )\r
+{\r
+ SecPpiList[0].Ppi = TopOfTemporaryRam;\r
+}\r
+\r
+/**\r
+ Caller provided function to be invoked at the end of InitializeDebugAgent().\r
+\r
+ Entry point to the C language phase of SEC. After the SEC assembly\r
+ code has initialized some temporary memory and set up the stack,\r
+ the control is transferred to this function.\r
+\r
+ @param[in] Context The first input parameter of InitializeDebugAgent().\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+SecStartupPhase2(\r
+ IN VOID *Context\r
+ )\r
+{\r
+ EFI_SEC_PEI_HAND_OFF *SecCoreData;\r
+ EFI_PEI_PPI_DESCRIPTOR *PpiList;\r
+ UINT32 Index;\r
+ EFI_PEI_PPI_DESCRIPTOR LocalSecPpiList[sizeof(mPeiSecMainPpi)/sizeof(mPeiSecMainPpi[0])];\r
+ EFI_PEI_PPI_DESCRIPTOR AllSecPpiList[FixedPcdGet32(PcdSecCoreMaxPpiSupported)];\r
+ EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint;\r
+\r
+ SecCoreData = (EFI_SEC_PEI_HAND_OFF *) Context;\r
+ //\r
+ // Find Pei Core entry point. It will report SEC and Pei Core debug information if remote debug\r
+ // is enabled.\r
+ //\r
+ FindAndReportEntryPoints ((EFI_FIRMWARE_VOLUME_HEADER *) SecCoreData->BootFirmwareVolumeBase, &PeiCoreEntryPoint);\r
+ if (PeiCoreEntryPoint == NULL)\r
+ {\r
+ CpuDeadLoop ();\r
+ }\r
+\r
+ CopyMem (LocalSecPpiList, mPeiSecMainPpi, sizeof(mPeiSecMainPpi));\r
+ PatchTopOfTemporaryRamPpi (LocalSecPpiList, (VOID *)((UINTN)SecCoreData->TemporaryRamBase + SecCoreData->TemporaryRamSize));\r
+\r
+ //\r
+ // Perform platform specific initialization before entering PeiCore.\r
+ //\r
+ PpiList = SecPlatformMain (SecCoreData);\r
+ if (PpiList != NULL) {\r
+ //\r
+ // Remove the terminal flag from the terminal Ppi\r
+ //\r
+ CopyMem (AllSecPpiList, LocalSecPpiList, sizeof (LocalSecPpiList));\r
+ for (Index = 0; Index < PcdGet32 (PcdSecCoreMaxPpiSupported); Index ++) {\r
+ if ((AllSecPpiList[Index].Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) == EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {\r
+ break;\r
+ }\r
+ }\r
+ AllSecPpiList[Index].Flags = AllSecPpiList[Index].Flags & (~EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST);\r
+\r
+ //\r
+ // Append the platform additional Ppi list\r
+ //\r
+ Index += 1;\r
+ while (Index < PcdGet32 (PcdSecCoreMaxPpiSupported) &&\r
+ ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) != EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST)) {\r
+ CopyMem (&AllSecPpiList[Index], PpiList, sizeof (EFI_PEI_PPI_DESCRIPTOR));\r
+ Index++;\r
+ PpiList++;\r
+ }\r
+\r
+ //\r
+ // Check whether the total Ppis exceeds the max supported Ppi.\r
+ //\r
+ if (Index >= PcdGet32 (PcdSecCoreMaxPpiSupported)) {\r
+ //\r
+ // the total Ppi is larger than the supported Max\r
+ // PcdSecCoreMaxPpiSupported can be enlarged to solve it.\r
+ //\r
+ CpuDeadLoop ();\r
+ } else {\r
+ //\r
+ // Add the terminal Ppi\r
+ //\r
+ CopyMem (&AllSecPpiList[Index], PpiList, sizeof (EFI_PEI_PPI_DESCRIPTOR));\r
+ }\r
+\r
+ //\r
+ // Set PpiList to the total Ppi\r
+ //\r
+ PpiList = &AllSecPpiList[0];\r
+ } else {\r
+ //\r
+ // No addition Ppi, PpiList directly point to the common Ppi list.\r
+ //\r
+ PpiList = &LocalSecPpiList[0];\r
+ }\r
+\r
+ //\r
+ // Transfer the control to the PEI core\r
+ //\r
+ ASSERT (PeiCoreEntryPoint != NULL);\r
+ (*PeiCoreEntryPoint) (SecCoreData, PpiList);\r
+\r
+ //\r
+ // Should not come here.\r
+ //\r
+ return ;\r
+}\r
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