/** @file\r
EFI PEI Core memory services\r
\r
-Copyright (c) 2006, Intel Corporation \r
+Copyright (c) 2006 - 2010, 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
which accompanies this distribution. The full text of the license may be found at \r
\r
**/\r
\r
-#include <PeiMain.h>\r
+#include "PeiMain.h"\r
\r
/**\r
\r
Initialize the memory services.\r
\r
-\r
- @param PrivateData Add parameter description\r
+ @param PrivateData Points to PeiCore's private instance data.\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
)\r
{\r
\r
- PrivateData->SwitchStackSignal = FALSE;\r
+ PrivateData->SwitchStackSignal = FALSE;\r
\r
//\r
// First entering PeiCore, following code will initialized some field\r
if (OldCoreData == NULL) {\r
\r
PrivateData->PeiMemoryInstalled = FALSE;\r
-\r
- PrivateData->BottomOfCarHeap = SecCoreData->PeiTemporaryRamBase; \r
- PrivateData->TopOfCarHeap = (VOID *)((UINTN)(PrivateData->BottomOfCarHeap) + SecCoreData->PeiTemporaryRamSize);\r
- PrivateData->SizeOfTemporaryMemory = SecCoreData->TemporaryRamSize;\r
- PrivateData->StackSize = (UINT64) SecCoreData->StackSize;\r
- \r
- DEBUG_CODE_BEGIN ();\r
- PrivateData->SizeOfCacheAsRam = SecCoreData->PeiTemporaryRamSize + SecCoreData->StackSize;\r
- PrivateData->MaxTopOfCarHeap = (VOID *) ((UINTN) PrivateData->BottomOfCarHeap + (UINTN) PrivateData->SizeOfCacheAsRam);\r
- PrivateData->StackBase = (EFI_PHYSICAL_ADDRESS) (UINTN) SecCoreData->StackBase;\r
- PrivateData->StackSize = (UINT64) SecCoreData->StackSize;\r
- DEBUG_CODE_END ();\r
-\r
- PrivateData->HobList.Raw = PrivateData->BottomOfCarHeap;\r
+ PrivateData->HobList.Raw = SecCoreData->PeiTemporaryRamBase;\r
\r
PeiCoreBuildHobHandoffInfoTable (\r
BOOT_WITH_FULL_CONFIGURATION,\r
- (EFI_PHYSICAL_ADDRESS) (UINTN) PrivateData->BottomOfCarHeap,\r
+ (EFI_PHYSICAL_ADDRESS) (UINTN) SecCoreData->PeiTemporaryRamBase,\r
(UINTN) SecCoreData->PeiTemporaryRamSize\r
);\r
\r
//\r
- // Set PS to point to ServiceTableShadow in Cache\r
+ // Set Ps to point to ServiceTableShadow in Cache\r
//\r
- PrivateData->PS = &(PrivateData->ServiceTableShadow);\r
+ PrivateData->Ps = &(PrivateData->ServiceTableShadow);\r
}\r
\r
return;\r
\r
/**\r
\r
- Install the permanent memory is now available.\r
- Creates HOB (PHIT and Stack).\r
+ This function registers the found memory configuration with the PEI Foundation.\r
\r
- @param PeiServices - The PEI core services table.\r
- @param MemoryBegin - Start of memory address.\r
- @param MemoryLength - Length of memory.\r
+ The usage model is that the PEIM that discovers the permanent memory shall invoke this service.\r
+ This routine will hold discoveried memory information into PeiCore's private data,\r
+ and set SwitchStackSignal flag. After PEIM who discovery memory is dispatched,\r
+ PeiDispatcher will migrate temporary memory to permenement memory.\r
+ \r
+ @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r
+ @param MemoryBegin Start of memory address.\r
+ @param MemoryLength Length of memory.\r
\r
@return EFI_SUCCESS Always success.\r
\r
DEBUG ((EFI_D_INFO, "PeiInstallPeiMemory MemoryBegin 0x%LX, MemoryLength 0x%LX\n", MemoryBegin, MemoryLength));\r
PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r
\r
+ //\r
+ // PEI_SERVICE.InstallPeiMemory should only be called one time during whole PEI phase.\r
+ // If it is invoked more than one time, ASSERT information is given for developer debugging in debug tip and\r
+ // simply return EFI_SUCESS in release tip to ignore it.\r
+ // \r
+ if (PrivateData->PeiMemoryInstalled) {\r
+ DEBUG ((EFI_D_ERROR, "ERROR: PeiInstallPeiMemory is called more than once!\n"));\r
+ ASSERT (PrivateData->PeiMemoryInstalled);\r
+ return EFI_SUCCESS;\r
+ }\r
+ \r
PrivateData->PhysicalMemoryBegin = MemoryBegin;\r
PrivateData->PhysicalMemoryLength = MemoryLength;\r
PrivateData->FreePhysicalMemoryTop = MemoryBegin + MemoryLength;\r
not usable prior to the memory installation.\r
\r
\r
- @param PeiServices - The PEI core services table.\r
- @param MemoryType - Type of memory to allocate.\r
- @param Pages - Number of pages to allocate.\r
- @param Memory - Pointer of memory allocated.\r
+ @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r
+ @param MemoryType Type of memory to allocate.\r
+ @param Pages Number of pages to allocate.\r
+ @param Memory Pointer of memory allocated.\r
\r
@retval EFI_SUCCESS The allocation was successful\r
- @retval EFI_INVALID_PARAMETER Only AllocateAnyAddress is supported.\r
@retval EFI_NOT_AVAILABLE_YET Called with permanent memory not available\r
@retval EFI_OUT_OF_RESOURCES There is not enough HOB heap to satisfy the requirement\r
to allocate the number of pages.\r
EFI_STATUS\r
EFIAPI\r
PeiAllocatePages (\r
- IN CONST EFI_PEI_SERVICES **PeiServices,\r
- IN EFI_MEMORY_TYPE MemoryType,\r
- IN UINTN Pages,\r
- OUT EFI_PHYSICAL_ADDRESS *Memory\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_MEMORY_TYPE MemoryType,\r
+ IN UINTN Pages,\r
+ OUT EFI_PHYSICAL_ADDRESS *Memory\r
)\r
{\r
PEI_CORE_INSTANCE *PrivateData;\r
EFI_PEI_HOB_POINTERS Hob;\r
- EFI_PHYSICAL_ADDRESS Offset;\r
EFI_PHYSICAL_ADDRESS *FreeMemoryTop;\r
EFI_PHYSICAL_ADDRESS *FreeMemoryBottom;\r
+ UINTN RemainingPages;\r
\r
PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r
Hob.Raw = PrivateData->HobList.Raw;\r
//\r
if (!PrivateData->PeiMemoryInstalled) {\r
//\r
- // When PeiInstallMemory is called but CAR has *not* been moved to temporary memory,\r
- // the AllocatePage will dependent the field of PEI_CORE_INSTANCE structure.\r
+ // When PeiInstallMemory is called but temporary memory has *not* been moved to temporary memory,\r
+ // the AllocatePage will depend on the field of PEI_CORE_INSTANCE structure.\r
//\r
if (!PrivateData->SwitchStackSignal) {\r
return EFI_NOT_AVAILABLE_YET;\r
}\r
\r
//\r
- // Check to see if on 4k boundary\r
+ // Check to see if on 4k boundary, If not aligned, make the allocation aligned.\r
//\r
- Offset = *(FreeMemoryTop) & 0xFFF;\r
+ *(FreeMemoryTop) -= *(FreeMemoryTop) & 0xFFF;\r
\r
//\r
- // If not aligned, make the allocation aligned.\r
+ // Verify that there is sufficient memory to satisfy the allocation\r
//\r
- if (Offset != 0) {\r
- *(FreeMemoryTop) -= Offset;\r
- }\r
- \r
+ RemainingPages = EFI_SIZE_TO_PAGES ((UINTN) (*FreeMemoryTop - *FreeMemoryBottom));\r
//\r
- // Verify that there is sufficient memory to satisfy the allocation\r
+ // For page allocation, the overhead sizeof (EFI_HOB_MEMORY_ALLOCATION) needs one extra page.\r
+ // So the number of remaining pages needs to be greater than that of the request pages.\r
//\r
- if (*(FreeMemoryTop) - ((Pages * EFI_PAGE_SIZE) + sizeof (EFI_HOB_MEMORY_ALLOCATION)) < \r
- *(FreeMemoryBottom)) {\r
- DEBUG ((EFI_D_ERROR, "AllocatePages failed: No 0x%x Pages is available.\n", Pages));\r
- DEBUG ((EFI_D_ERROR, "There is only left 0x%x pages memory resource to be allocated.\n", \\r
- EFI_SIZE_TO_PAGES ((UINTN) (*(FreeMemoryTop) - *(FreeMemoryBottom)))));\r
+ if (RemainingPages <= Pages) {\r
+ DEBUG ((EFI_D_ERROR, "AllocatePages failed: No 0x%lx Pages is available.\n", (UINT64) Pages));\r
+ DEBUG ((EFI_D_ERROR, "There is only left 0x%lx pages memory resource to be allocated.\n", (UINT64) RemainingPages));\r
return EFI_OUT_OF_RESOURCES;\r
} else {\r
//\r
\r
/**\r
\r
- Memory allocation service on the CAR.\r
-\r
+ Pool allocation service. Before permenent memory is discoveried, the pool will \r
+ be allocated the heap in the temporary memory. Genenrally, the size of heap in temporary \r
+ memory does not exceed to 64K, so the biggest pool size could be allocated is \r
+ 64K.\r
\r
- @param PeiServices - The PEI core services table.\r
- @param Size - Amount of memory required\r
- @param Buffer - Address of pointer to the buffer\r
+ @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r
+ @param Size Amount of memory required\r
+ @param Buffer Address of pointer to the buffer\r
\r
@retval EFI_SUCCESS The allocation was successful\r
@retval EFI_OUT_OF_RESOURCES There is not enough heap to satisfy the requirement\r
EFI_STATUS\r
EFIAPI\r
PeiAllocatePool (\r
- IN CONST EFI_PEI_SERVICES **PeiServices,\r
- IN UINTN Size,\r
- OUT VOID **Buffer\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN UINTN Size,\r
+ OUT VOID **Buffer\r
)\r
{\r
EFI_STATUS Status;\r
EFI_HOB_MEMORY_POOL *Hob;\r
\r
- //\r
- // If some "post-memory" PEIM wishes to allocate larger pool,\r
- // it should use AllocatePages service instead.\r
- //\r
- ASSERT (Size < 0x10000 - sizeof (EFI_HOB_MEMORY_POOL));\r
- Status = PeiServicesCreateHob (\r
+ //\r
+ // If some "post-memory" PEIM wishes to allocate larger pool,\r
+ // it should use AllocatePages service instead.\r
+ //\r
+ \r
+ //\r
+ // Generally, the size of heap in temporary memory does not exceed to 64K,\r
+ // so the maxmium size of pool is 0x10000 - sizeof (EFI_HOB_MEMORY_POOL)\r
+ //\r
+ if (Size >= (0x10000 - sizeof (EFI_HOB_MEMORY_POOL))) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+ \r
+ Status = PeiServicesCreateHob (\r
EFI_HOB_TYPE_MEMORY_POOL,\r
(UINT16)(sizeof (EFI_HOB_MEMORY_POOL) + Size),\r
(VOID **)&Hob\r
);\r
*Buffer = Hob+1; \r
\r
-\r
return Status;\r
}\r
projects / mirror_edk2.git / blobdiff