-/*++\r
-\r
+/** @file\r
+ Pei Core Main Entry Point\r
+ \r
Copyright (c) 2006, Intel Corporation\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
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
-Module Name:\r
-\r
- PeiMain.c\r
-\r
-Abstract:\r
-\r
- Pei Core Main Entry Point\r
-\r
-Revision History\r
-\r
---*/\r
+**/\r
\r
#include <PeiMain.h>\r
\r
-//\r
-//CAR is filled with this initial value during SEC phase\r
-//\r
-#define INIT_CAR_VALUE 0x5AA55AA5\r
-\r
-static EFI_PEI_PPI_DESCRIPTOR mMemoryDiscoveredPpi = {\r
+STATIC EFI_PEI_PPI_DESCRIPTOR mMemoryDiscoveredPpi = {\r
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
&gEfiPeiMemoryDiscoveredPpiGuid,\r
NULL\r
};\r
\r
-//\r
-// Pei Core Module Variables\r
-//\r
-//\r
-static EFI_PEI_SERVICES mPS = {\r
+///\r
+/// Pei service instance\r
+///\r
+STATIC EFI_PEI_SERVICES gPs = {\r
{\r
PEI_SERVICES_SIGNATURE,\r
PEI_SERVICES_REVISION,\r
PeiRegisterForShadow\r
};\r
\r
-EFI_STATUS\r
-EFIAPI\r
-PeiCore (\r
- IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r
- IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList,\r
- IN VOID *Data\r
- )\r
-/*++\r
-\r
-Routine Description:\r
+/**\r
\r
- The entry routine to Pei Core, invoked by PeiMain during transition\r
+ This routine is invoked by main entry of PeiMain module during transition\r
from SEC to PEI. After switching stack in the PEI core, it will restart\r
with the old core data.\r
\r
-Arguments:\r
-\r
- SecCoreData - Points to a data structure containing information about the PEI core's operating\r
+ @param SecCoreData Points to a data structure containing information about the PEI core's operating\r
environment, such as the size and location of temporary RAM, the stack location and\r
the BFV location.\r
- PpiList - Points to a list of one or more PPI descriptors to be installed initially by the PEI core.\r
+ @param PpiList Points to a list of one or more PPI descriptors to be installed initially by the PEI core.\r
An empty PPI list consists of a single descriptor with the end-tag\r
EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST. As part of its initialization\r
phase, the PEI Foundation will add these SEC-hosted PPIs to its PPI database such\r
that both the PEI Foundation and any modules can leverage the associated service\r
calls and/or code in these early PPIs\r
- Data - Pointer to old core data that is used to initialize the\r
+ @param Data Pointer to old core data that is used to initialize the\r
core's data areas.\r
+ If NULL, it is first PeiCore entering.\r
\r
-Returns:\r
+ @retval EFI_NOT_FOUND Never reach\r
\r
- This function never returns\r
- EFI_NOT_FOUND - Never reach\r
-\r
---*/\r
+**/\r
+VOID\r
+EFIAPI\r
+PeiCore (\r
+ IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r
+ IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList,\r
+ IN VOID *Data\r
+ )\r
{\r
PEI_CORE_INSTANCE PrivateData;\r
EFI_STATUS Status;\r
PEI_CORE_TEMP_POINTERS TempPtr;\r
- UINT64 mTick;\r
+ UINT64 Tick;\r
PEI_CORE_INSTANCE *OldCoreData;\r
EFI_PEI_CPU_IO_PPI *CpuIo;\r
EFI_PEI_PCI_CFG2_PPI *PciCfg;\r
- PEI_CORE_ENTRY_POINT ShadowedPeiCore;\r
+ PEICORE_FUNCTION_POINTER ShadowedPeiCore;\r
\r
- mTick = 0;\r
+ Tick = 0;\r
OldCoreData = (PEI_CORE_INSTANCE *) Data;\r
\r
+ //\r
+ // Record the system tick for first entering PeiCore.\r
+ // This tick is duration of executing platform seccore module.\r
+ // \r
if (PerformanceMeasurementEnabled()) {\r
if (OldCoreData == NULL) {\r
- mTick = GetPerformanceCounter ();\r
+ Tick = GetPerformanceCounter ();\r
}\r
}\r
\r
if (OldCoreData != NULL) {\r
- ShadowedPeiCore = (PEI_CORE_ENTRY_POINT) (UINTN) OldCoreData->ShadowedPeiCore;\r
+ ShadowedPeiCore = (PEICORE_FUNCTION_POINTER) (UINTN) OldCoreData->ShadowedPeiCore;\r
+ \r
+ //\r
+ // PeiCore has been shadowed to memory for first entering, so\r
+ // just jump to PeiCore in memory here.\r
+ //\r
if (ShadowedPeiCore != NULL) {\r
OldCoreData->ShadowedPeiCore = NULL;\r
ShadowedPeiCore (\r
CpuIo = (VOID*)PrivateData.ServiceTableShadow.CpuIo;\r
PciCfg = (VOID*)PrivateData.ServiceTableShadow.PciCfg;\r
\r
- CopyMem (&PrivateData.ServiceTableShadow, &mPS, sizeof (mPS));\r
+ CopyMem (&PrivateData.ServiceTableShadow, &gPs, sizeof (gPs));\r
\r
PrivateData.ServiceTableShadow.CpuIo = CpuIo;\r
PrivateData.ServiceTableShadow.PciCfg = PciCfg;\r
} else {\r
+ //\r
+ // If OldCoreData is NULL, means current is first Peicore's entering.\r
+ //\r
+ \r
ZeroMem (&PrivateData, sizeof (PEI_CORE_INSTANCE));\r
PrivateData.Signature = PEI_CORE_HANDLE_SIGNATURE;\r
- CopyMem (&PrivateData.ServiceTableShadow, &mPS, sizeof (mPS));\r
+ CopyMem (&PrivateData.ServiceTableShadow, &gPs, sizeof (gPs));\r
}\r
\r
PrivateData.PS = &PrivateData.ServiceTableShadow;\r
\r
//\r
// Initialize libraries that the PeiCore is linked against\r
- // BUGBUG: The FileHandle is passed in as NULL. Do we look it up or remove it from the lib init?\r
//\r
- ProcessLibraryConstructorList (NULL, &PrivateData.PS);\r
+ ProcessLibraryConstructorList (NULL, (CONST EFI_PEI_SERVICES **)&PrivateData.PS);\r
\r
InitializeMemoryServices (&PrivateData, SecCoreData, OldCoreData);\r
\r
//\r
// Save PeiServicePointer so that it can be retrieved anywhere.\r
//\r
- SetPeiServicesTablePointer(&PrivateData.PS);\r
+ SetPeiServicesTablePointer((CONST EFI_PEI_SERVICES **) &PrivateData.PS);\r
\r
if (OldCoreData != NULL) {\r
\r
FixedPcdGet32 (PcdStatusCodeValuePeiCoreEntry)\r
);\r
\r
- PERF_START (NULL,"PEI", NULL, mTick);\r
+ PERF_START (NULL,"PEI", NULL, Tick);\r
//\r
// If first pass, start performance measurement.\r
//\r
- PERF_START (NULL,"PreMem", NULL, mTick);\r
+ PERF_START (NULL,"PreMem", NULL, Tick);\r
\r
//\r
// If SEC provided any PPI services to PEI, install them.\r
//\r
ASSERT(PrivateData.PeiMemoryInstalled == TRUE);\r
\r
+ //\r
+ // Till now, PEI phase will be finished, get performace count\r
+ // for computing duration of PEI phase\r
+ //\r
PERF_END (NULL, "PostMem", NULL, 0);\r
\r
Status = PeiServicesLocatePpi (\r
);\r
ASSERT_EFI_ERROR (Status);\r
\r
+ //\r
+ // Enter DxeIpl to load Dxe core.\r
+ //\r
DEBUG ((EFI_D_INFO, "DXE IPL Entry\n"));\r
Status = TempPtr.DxeIpl->Entry (\r
TempPtr.DxeIpl,\r
&PrivateData.PS,\r
PrivateData.HobList\r
);\r
-\r
+ //\r
+ // Should never reach here.\r
+ //\r
ASSERT_EFI_ERROR (Status);\r
-\r
- return EFI_NOT_FOUND;\r
+ CpuDeadLoop();\r
}\r
\r
\r
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