ArmPkg ArmVirtPkg MdeModulePkg: switch to separate ArmMmuLib

[mirror_edk2.git] / ArmVirtPkg / Library / ArmVirtMemoryInitPeiLib / ArmVirtMemoryInitPeiLib.c

/** @file\r
*\r
*  Copyright (c) 2011-2014, ARM Limited. All rights reserved.\r
*  Copyright (c) 2014, Linaro Limited. All rights reserved.\r
*\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
#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
#include <Library/CacheMaintenanceLib.h>\r
\r
VOID\r
BuildMemoryTypeInformationHob (\r
  VOID\r
  );\r
\r
VOID\r
InitMmu (\r
  VOID\r
  )\r
{\r
  ARM_MEMORY_REGION_DESCRIPTOR  *MemoryTable;\r
  VOID                          *TranslationTableBase;\r
  UINTN                         TranslationTableSize;\r
  RETURN_STATUS                 Status;\r
\r
  // Get Virtual Memory Map from the Platform Library\r
  ArmPlatformGetVirtualMemoryMap (&MemoryTable);\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
EFI_STATUS\r
EFIAPI\r
MemoryPeim (\r
  IN EFI_PHYSICAL_ADDRESS               UefiMemoryBase,\r
  IN UINT64                             UefiMemorySize\r
  )\r
{\r
  EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;\r
  UINT64                      SystemMemoryTop;\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_UNCACHEABLE |\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
  SystemMemoryTop = PcdGet64 (PcdSystemMemoryBase) +\r
                    PcdGet64 (PcdSystemMemorySize);\r
\r
  if (SystemMemoryTop - 1 > MAX_ADDRESS) {\r
    BuildResourceDescriptorHob (\r
        EFI_RESOURCE_SYSTEM_MEMORY,\r
        ResourceAttributes,\r
        PcdGet64 (PcdSystemMemoryBase),\r
        (UINT64)MAX_ADDRESS - PcdGet64 (PcdSystemMemoryBase) + 1\r
        );\r
    BuildResourceDescriptorHob (\r
        EFI_RESOURCE_SYSTEM_MEMORY,\r
        ResourceAttributes,\r
        (UINT64)MAX_ADDRESS + 1,\r
        SystemMemoryTop - MAX_ADDRESS - 1\r
        );\r
  } else {\r
    BuildResourceDescriptorHob (\r
        EFI_RESOURCE_SYSTEM_MEMORY,\r
        ResourceAttributes,\r
        PcdGet64 (PcdSystemMemoryBase),\r
        PcdGet64 (PcdSystemMemorySize)\r
        );\r
  }\r
\r
  //\r
  // When running under virtualization, the PI/UEFI memory region may be\r
  // clean but not invalidated in system caches or in lower level caches\r
  // on other CPUs. So invalidate the region by virtual address, to ensure\r
  // that the contents we put there with the caches and MMU off will still\r
  // be visible after turning them on.\r
  //\r
  InvalidateDataCacheRange ((VOID*)(UINTN)UefiMemoryBase, UefiMemorySize);\r
\r
  // Build Memory Allocation Hob\r
  InitMmu ();\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