/** @file\r
EFI PEI Core memory services\r
\r
-Copyright (c) 2006, Intel Corporation \r
-All rights reserved. This program and the accompanying materials \r
+Copyright (c) 2006 - 2015, 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
\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
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 (FALSE);\r
+ return EFI_SUCCESS;\r
+ }\r
+ \r
PrivateData->PhysicalMemoryBegin = MemoryBegin;\r
PrivateData->PhysicalMemoryLength = MemoryLength;\r
PrivateData->FreePhysicalMemoryTop = MemoryBegin + MemoryLength;\r
}\r
\r
/**\r
+ The purpose of the service is to publish an interface that allows \r
+ PEIMs to allocate memory ranges that are managed by the PEI Foundation.\r
\r
- Memory allocation service on permanent memory,\r
- not usable prior to the memory installation.\r
+ @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r
+ @param MemoryType The type of memory to allocate.\r
+ @param Pages The number of contiguous 4 KB pages to allocate.\r
+ @param Memory Pointer to a physical address. On output, the address is set to the base \r
+ of the page range that was allocated.\r
\r
-\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_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
+ @retval EFI_SUCCESS The memory range was successfully allocated.\r
+ @retval EFI_OUT_OF_RESOURCES The pages could not be allocated.\r
+ @retval EFI_INVALID_PARAMETER Type is not equal to EfiLoaderCode, EfiLoaderData, EfiRuntimeServicesCode, \r
+ EfiRuntimeServicesData, EfiBootServicesCode, EfiBootServicesData,\r
+ EfiACPIReclaimMemory, EfiReservedMemoryType, or EfiACPIMemoryNVS.\r
\r
**/\r
EFI_STATUS\r
EFI_PEI_HOB_POINTERS Hob;\r
EFI_PHYSICAL_ADDRESS *FreeMemoryTop;\r
EFI_PHYSICAL_ADDRESS *FreeMemoryBottom;\r
+ UINTN RemainingPages;\r
+ UINTN Granularity;\r
+ UINTN Padding;\r
+\r
+ if ((MemoryType != EfiLoaderCode) &&\r
+ (MemoryType != EfiLoaderData) &&\r
+ (MemoryType != EfiRuntimeServicesCode) &&\r
+ (MemoryType != EfiRuntimeServicesData) &&\r
+ (MemoryType != EfiBootServicesCode) &&\r
+ (MemoryType != EfiBootServicesData) &&\r
+ (MemoryType != EfiACPIReclaimMemory) &&\r
+ (MemoryType != EfiReservedMemoryType) &&\r
+ (MemoryType != EfiACPIMemoryNVS)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ Granularity = DEFAULT_PAGE_ALLOCATION_GRANULARITY;\r
+\r
+ if (RUNTIME_PAGE_ALLOCATION_GRANULARITY > DEFAULT_PAGE_ALLOCATION_GRANULARITY &&\r
+ (MemoryType == EfiACPIReclaimMemory ||\r
+ MemoryType == EfiACPIMemoryNVS ||\r
+ MemoryType == EfiRuntimeServicesCode ||\r
+ MemoryType == EfiRuntimeServicesData)) {\r
+\r
+ Granularity = RUNTIME_PAGE_ALLOCATION_GRANULARITY;\r
+\r
+ DEBUG ((DEBUG_INFO, "AllocatePages: aligning allocation to %d KB\n",\r
+ Granularity / SIZE_1KB));\r
+ }\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
+ // 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
}\r
\r
//\r
- // Check to see if on 4k boundary, If not aligned, make the allocation aligned.\r
+ // Check to see if on correct boundary for the memory type.\r
+ // If not aligned, make the allocation aligned.\r
//\r
- *(FreeMemoryTop) -= *(FreeMemoryTop) & 0xFFF;\r
- \r
+ Padding = *(FreeMemoryTop) & (Granularity - 1);\r
+ if ((UINTN) (*FreeMemoryTop - *FreeMemoryBottom) < Padding) {\r
+ DEBUG ((DEBUG_ERROR, "AllocatePages failed: Out of space after padding.\n"));\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ *(FreeMemoryTop) -= Padding;\r
+ if (Padding >= EFI_PAGE_SIZE) {\r
+ //\r
+ // Create a memory allocation HOB to cover\r
+ // the pages that we will lose to rounding\r
+ //\r
+ BuildMemoryAllocationHob (\r
+ *(FreeMemoryTop),\r
+ Padding & ~(UINTN)EFI_PAGE_MASK,\r
+ EfiConventionalMemory\r
+ );\r
+ }\r
+\r
//\r
- // Verify that there is sufficient memory to satisfy the allocation\r
+ // Verify that there is sufficient memory to satisfy the allocation.\r
+ // For page allocation, the overhead sizeof (EFI_HOB_MEMORY_ALLOCATION) needs to be considered.\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 ((UINTN) (*FreeMemoryTop - *FreeMemoryBottom) < (UINTN) ALIGN_VALUE (sizeof (EFI_HOB_MEMORY_ALLOCATION), 8)) {\r
+ DEBUG ((EFI_D_ERROR, "AllocatePages failed: No space to build memory allocation hob.\n"));\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+ RemainingPages = (UINTN)(*FreeMemoryTop - *FreeMemoryBottom - ALIGN_VALUE (sizeof (EFI_HOB_MEMORY_ALLOCATION), 8)) >> EFI_PAGE_SHIFT;\r
+ //\r
+ // The number of remaining pages needs to be greater than or equal to that of the request pages.\r
+ //\r
+ Pages = ALIGN_VALUE (Pages, EFI_SIZE_TO_PAGES (Granularity));\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
- Pool allocation service. Before permenent memory is discoveried, the pool will \r
- be allocated the heap in the CAR. Genenrally, the size of heap in temporary \r
+ Pool allocation service. Before permanent 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
\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
+ // HobLength is multiples of 8 bytes, so the maxmium size of pool is 0xFFF8 - sizeof (EFI_HOB_MEMORY_POOL)\r
//\r
- ASSERT (Size < 0x10000 - sizeof (EFI_HOB_MEMORY_POOL));\r
+ if (Size > (0xFFF8 - 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
+ ASSERT_EFI_ERROR (Status);\r
*Buffer = Hob+1; \r
\r
return Status;\r
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