+++ /dev/null
-/** @file\r
-*\r
-* Copyright (c) 2011-2015, ARM Limited. All rights reserved.\r
-*\r
-* SPDX-License-Identifier: BSD-2-Clause-Patent\r
-*\r
-**/\r
-\r
-#include <PiPei.h>\r
-\r
-#include <Library/ArmMmuLib.h>\r
-#include <Library/ArmPlatformLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/HobLib.h>\r
-#include <Library/MemoryAllocationLib.h>\r
-#include <Library/PcdLib.h>\r
-\r
-VOID\r
-BuildMemoryTypeInformationHob (\r
- VOID\r
- );\r
-\r
-STATIC\r
-VOID\r
-InitMmu (\r
- IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable\r
- )\r
-{\r
-\r
- VOID *TranslationTableBase;\r
- UINTN TranslationTableSize;\r
- RETURN_STATUS Status;\r
-\r
- //Note: Because we called PeiServicesInstallPeiMemory() before to call InitMmu() the MMU Page Table resides in\r
- // DRAM (even at the top of DRAM as it is the first permanent memory allocation)\r
- Status = ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "Error: Failed to enable MMU\n"));\r
- }\r
-}\r
-\r
-/*++\r
-\r
-Routine Description:\r
-\r
-\r
-\r
-Arguments:\r
-\r
- FileHandle - Handle of the file being invoked.\r
- PeiServices - Describes the list of possible PEI Services.\r
-\r
-Returns:\r
-\r
- Status - EFI_SUCCESS if the boot mode could be set\r
-\r
---*/\r
-EFI_STATUS\r
-EFIAPI\r
-MemoryPeim (\r
- IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,\r
- IN UINT64 UefiMemorySize\r
- )\r
-{\r
- ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable;\r
- EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;\r
- UINT64 ResourceLength;\r
- EFI_PEI_HOB_POINTERS NextHob;\r
- EFI_PHYSICAL_ADDRESS FdTop;\r
- EFI_PHYSICAL_ADDRESS SystemMemoryTop;\r
- EFI_PHYSICAL_ADDRESS ResourceTop;\r
- BOOLEAN Found;\r
-\r
- // Get Virtual Memory Map from the Platform Library\r
- ArmPlatformGetVirtualMemoryMap (&MemoryTable);\r
-\r
- // Ensure PcdSystemMemorySize has been set\r
- ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);\r
-\r
- //\r
- // Now, the permanent memory has been installed, we can call AllocatePages()\r
- //\r
- ResourceAttributes = (\r
- EFI_RESOURCE_ATTRIBUTE_PRESENT |\r
- EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r
- EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r
- EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r
- EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |\r
- EFI_RESOURCE_ATTRIBUTE_TESTED\r
- );\r
-\r
- //\r
- // Check if the resource for the main system memory has been declared\r
- //\r
- Found = FALSE;\r
- NextHob.Raw = GetHobList ();\r
- while ((NextHob.Raw = GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, NextHob.Raw)) != NULL) {\r
- if ((NextHob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&\r
- (PcdGet64 (PcdSystemMemoryBase) >= NextHob.ResourceDescriptor->PhysicalStart) &&\r
- (NextHob.ResourceDescriptor->PhysicalStart + NextHob.ResourceDescriptor->ResourceLength <= PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize)))\r
- {\r
- Found = TRUE;\r
- break;\r
- }\r
- NextHob.Raw = GET_NEXT_HOB (NextHob);\r
- }\r
-\r
- if (!Found) {\r
- // Reserved the memory space occupied by the firmware volume\r
- BuildResourceDescriptorHob (\r
- EFI_RESOURCE_SYSTEM_MEMORY,\r
- ResourceAttributes,\r
- PcdGet64 (PcdSystemMemoryBase),\r
- PcdGet64 (PcdSystemMemorySize)\r
- );\r
- }\r
-\r
- //\r
- // Reserved the memory space occupied by the firmware volume\r
- //\r
-\r
- SystemMemoryTop = (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdSystemMemoryBase) + (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdSystemMemorySize);\r
- FdTop = (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdFdBaseAddress) + (EFI_PHYSICAL_ADDRESS)PcdGet32 (PcdFdSize);\r
-\r
- // EDK2 does not have the concept of boot firmware copied into DRAM. To avoid the DXE\r
- // core to overwrite this area we must mark the region with the attribute non-present\r
- if ((PcdGet64 (PcdFdBaseAddress) >= PcdGet64 (PcdSystemMemoryBase)) && (FdTop <= SystemMemoryTop)) {\r
- Found = FALSE;\r
-\r
- // Search for System Memory Hob that contains the firmware\r
- NextHob.Raw = GetHobList ();\r
- while ((NextHob.Raw = GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, NextHob.Raw)) != NULL) {\r
- if ((NextHob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&\r
- (PcdGet64 (PcdFdBaseAddress) >= NextHob.ResourceDescriptor->PhysicalStart) &&\r
- (FdTop <= NextHob.ResourceDescriptor->PhysicalStart + NextHob.ResourceDescriptor->ResourceLength))\r
- {\r
- ResourceAttributes = NextHob.ResourceDescriptor->ResourceAttribute;\r
- ResourceLength = NextHob.ResourceDescriptor->ResourceLength;\r
- ResourceTop = NextHob.ResourceDescriptor->PhysicalStart + ResourceLength;\r
-\r
- if (PcdGet64 (PcdFdBaseAddress) == NextHob.ResourceDescriptor->PhysicalStart) {\r
- if (SystemMemoryTop == FdTop) {\r
- NextHob.ResourceDescriptor->ResourceAttribute = ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT;\r
- } else {\r
- // Create the System Memory HOB for the firmware with the non-present attribute\r
- BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,\r
- ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT,\r
- PcdGet64 (PcdFdBaseAddress),\r
- PcdGet32 (PcdFdSize));\r
-\r
- // Top of the FD is system memory available for UEFI\r
- NextHob.ResourceDescriptor->PhysicalStart += PcdGet32(PcdFdSize);\r
- NextHob.ResourceDescriptor->ResourceLength -= PcdGet32(PcdFdSize);\r
- }\r
- } else {\r
- // Create the System Memory HOB for the firmware with the non-present attribute\r
- BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,\r
- ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT,\r
- PcdGet64 (PcdFdBaseAddress),\r
- PcdGet32 (PcdFdSize));\r
-\r
- // Update the HOB\r
- NextHob.ResourceDescriptor->ResourceLength = PcdGet64 (PcdFdBaseAddress) - NextHob.ResourceDescriptor->PhysicalStart;\r
-\r
- // If there is some memory available on the top of the FD then create a HOB\r
- if (FdTop < NextHob.ResourceDescriptor->PhysicalStart + ResourceLength) {\r
- // Create the System Memory HOB for the remaining region (top of the FD)\r
- BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,\r
- ResourceAttributes,\r
- FdTop,\r
- ResourceTop - FdTop);\r
- }\r
- }\r
- Found = TRUE;\r
- break;\r
- }\r
- NextHob.Raw = GET_NEXT_HOB (NextHob);\r
- }\r
-\r
- ASSERT(Found);\r
- }\r
-\r
- // Build Memory Allocation Hob\r
- InitMmu (MemoryTable);\r
-\r
- if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {\r
- // Optional feature that helps prevent EFI memory map fragmentation.\r
- BuildMemoryTypeInformationHob ();\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
projects / mirror_edk2.git / blobdiff