ArmVirtPkg/QemuVirtMemInfoLib: use HOB not PCD to record the memory size

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

/** @file\r
\r
  Copyright (c) 2014-2017, Linaro Limited. All rights reserved.\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <Uefi.h>\r
#include <Pi/PiMultiPhase.h>\r
#include <Library/ArmLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/HobLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
\r
// Number of Virtual Memory Map Descriptors\r
#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS  5\r
\r
//\r
// mach-virt's core peripherals such as the UART, the GIC and the RTC are\r
// all mapped in the 'miscellaneous device I/O' region, which we just map\r
// in its entirety rather than device by device. Note that it does not\r
// cover any of the NOR flash banks or PCI resource windows.\r
//\r
#define MACH_VIRT_PERIPH_BASE  0x08000000\r
#define MACH_VIRT_PERIPH_SIZE  SIZE_128MB\r
\r
/**\r
  Default library constructur that obtains the memory size from a PCD.\r
\r
  @return  Always returns RETURN_SUCCESS\r
\r
**/\r
RETURN_STATUS\r
EFIAPI\r
QemuVirtMemInfoLibConstructor (\r
  VOID\r
  )\r
{\r
  UINT64  Size;\r
  VOID    *Hob;\r
\r
  Size = PcdGet64 (PcdSystemMemorySize);\r
  Hob  = BuildGuidDataHob (&gArmVirtSystemMemorySizeGuid, &Size, sizeof Size);\r
  ASSERT (Hob != NULL);\r
\r
  return RETURN_SUCCESS;\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. The allocated memory\r
                                    will not be freed.\r
\r
**/\r
VOID\r
ArmVirtGetMemoryMap (\r
  OUT ARM_MEMORY_REGION_DESCRIPTOR  **VirtualMemoryMap\r
  )\r
{\r
  ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;\r
  VOID                          *MemorySizeHob;\r
\r
  ASSERT (VirtualMemoryMap != NULL);\r
\r
  MemorySizeHob = GetFirstGuidHob (&gArmVirtSystemMemorySizeGuid);\r
  ASSERT (MemorySizeHob != NULL);\r
  if (MemorySizeHob == NULL) {\r
    return;\r
  }\r
\r
  VirtualMemoryTable = AllocatePool (\r
                         sizeof (ARM_MEMORY_REGION_DESCRIPTOR) *\r
                         MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS\r
                         );\r
\r
  if (VirtualMemoryTable == NULL) {\r
    DEBUG ((DEBUG_ERROR, "%a: Error: Failed AllocatePool()\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       = *(UINT64 *)GET_GUID_HOB_DATA (MemorySizeHob);\r
  VirtualMemoryTable[0].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;\r
\r
  DEBUG ((\r
    DEBUG_INFO,\r
    "%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
\r
  // Memory mapped peripherals (UART, RTC, GIC, virtio-mmio, etc)\r
  VirtualMemoryTable[1].PhysicalBase = MACH_VIRT_PERIPH_BASE;\r
  VirtualMemoryTable[1].VirtualBase  = MACH_VIRT_PERIPH_BASE;\r
  VirtualMemoryTable[1].Length       = MACH_VIRT_PERIPH_SIZE;\r
  VirtualMemoryTable[1].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;\r
\r
  // Map the FV region as normal executable memory\r
  VirtualMemoryTable[2].PhysicalBase = PcdGet64 (PcdFvBaseAddress);\r
  VirtualMemoryTable[2].VirtualBase  = VirtualMemoryTable[2].PhysicalBase;\r
  VirtualMemoryTable[2].Length       = FixedPcdGet32 (PcdFvSize);\r
  VirtualMemoryTable[2].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;\r
\r
  // End of Table\r
  ZeroMem (&VirtualMemoryTable[3], sizeof (ARM_MEMORY_REGION_DESCRIPTOR));\r
\r
  *VirtualMemoryMap = VirtualMemoryTable;\r
}\r