ArmVirtPkg/ArmVirtPlatformLib: remove support for uncached mappings

[mirror_edk2.git] / ArmVirtPkg / Library / ArmVirtPlatformLib / VirtMem.c

/** @file\r
*\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 <Library/ArmPlatformLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/IoLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
\r
// Number of Virtual Memory Map Descriptors\r
#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS          5\r
\r
EFI_PHYSICAL_ADDRESS\r
ArmGetPhysAddrTop (\r
  VOID\r
  );\r
\r
/**\r
  Return the Virtual Memory Map of your platform\r
\r
  This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU\r
  on your platform.\r
\r
  @param[out]   VirtualMemoryMap    Array of ARM_MEMORY_REGION_DESCRIPTOR\r
                                    describing a Physical-to-Virtual Memory\r
                                    mapping. This array must be ended by a\r
                                    zero-filled entry\r
\r
**/\r
VOID\r
ArmPlatformGetVirtualMemoryMap (\r
  IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap\r
  )\r
{\r
  ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;\r
\r
  ASSERT (VirtualMemoryMap != NULL);\r
\r
  VirtualMemoryTable = AllocatePages (\r
                         EFI_SIZE_TO_PAGES (\r
                           sizeof (ARM_MEMORY_REGION_DESCRIPTOR)\r
                           * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS\r
                           )\r
                         );\r
\r
  if (VirtualMemoryTable == NULL) {\r
    DEBUG ((EFI_D_ERROR, "%a: Error: Failed AllocatePages()\n", __FUNCTION__));\r
    return;\r
  }\r
\r
  // System DRAM\r
  VirtualMemoryTable[0].PhysicalBase = PcdGet64 (PcdSystemMemoryBase);\r
  VirtualMemoryTable[0].VirtualBase  = VirtualMemoryTable[0].PhysicalBase;\r
  VirtualMemoryTable[0].Length       = PcdGet64 (PcdSystemMemorySize);\r
  VirtualMemoryTable[0].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;\r
\r
  DEBUG ((EFI_D_INFO, "%a: Dumping System DRAM Memory Map:\n"\r
      "\tPhysicalBase: 0x%lX\n"\r
      "\tVirtualBase: 0x%lX\n"\r
      "\tLength: 0x%lX\n",\r
      __FUNCTION__,\r
      VirtualMemoryTable[0].PhysicalBase,\r
      VirtualMemoryTable[0].VirtualBase,\r
      VirtualMemoryTable[0].Length));\r
\r
  // Peripheral space before DRAM\r
  VirtualMemoryTable[1].PhysicalBase = 0x0;\r
  VirtualMemoryTable[1].VirtualBase  = 0x0;\r
  VirtualMemoryTable[1].Length       = VirtualMemoryTable[0].PhysicalBase;\r
  VirtualMemoryTable[1].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;\r
\r
  // Peripheral space after DRAM\r
  VirtualMemoryTable[2].PhysicalBase = VirtualMemoryTable[0].Length + VirtualMemoryTable[1].Length;\r
  VirtualMemoryTable[2].VirtualBase  = VirtualMemoryTable[2].PhysicalBase;\r
  VirtualMemoryTable[2].Length       = MIN (1ULL << FixedPcdGet8 (PcdPrePiCpuMemorySize),\r
                                         ArmGetPhysAddrTop ()) -\r
                                       VirtualMemoryTable[2].PhysicalBase;\r
  VirtualMemoryTable[2].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;\r
\r
  // Remap the FD region as normal executable memory\r
  VirtualMemoryTable[3].PhysicalBase = FixedPcdGet64 (PcdFdBaseAddress);\r
  VirtualMemoryTable[3].VirtualBase  = VirtualMemoryTable[3].PhysicalBase;\r
  VirtualMemoryTable[3].Length       = FixedPcdGet32 (PcdFdSize);\r
  VirtualMemoryTable[3].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;\r
\r
  // End of Table\r
  ZeroMem (&VirtualMemoryTable[4], sizeof (ARM_MEMORY_REGION_DESCRIPTOR));\r
\r
  *VirtualMemoryMap = VirtualMemoryTable;\r
}\r