ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSMFoundationMem.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011-2014, ARM Limited. All rights reserved.
   4 *
   5 *  This program and the accompanying materials
   6 *  are licensed and made available under the terms and conditions of the BSD License
   7 *  which accompanies this distribution.  The full text of the license may be found at
   8 *  http://opensource.org/licenses/bsd-license.php
   9 *
  10 *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 *
  13 **/
  14
  15 #include <Library/ArmPlatformLib.h>
  16 #include <Library/DebugLib.h>
  17 #include <Library/HobLib.h>
  18 #include <Library/PcdLib.h>
  19 #include <Library/IoLib.h>
  20 #include <Library/MemoryAllocationLib.h>
  21 #include <ArmPlatform.h>
  22
  23 // Number of Virtual Memory Map Descriptors
  24 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS          5
  25
  26 // DDR attributes
  27 #define DDR_ATTRIBUTES_CACHED           ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
  28 #define DDR_ATTRIBUTES_UNCACHED         ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
  29
  30 /**
  31   Return the Virtual Memory Map of your platform
  32
  33   This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
  34
  35   @param[out]   VirtualMemoryMap    Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
  36                                     Virtual Memory mapping. This array must be ended by a zero-filled
  37                                     entry
  38
  39 **/
  40 VOID
  41 ArmPlatformGetVirtualMemoryMap (
  42   IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
  43   )
  44 {
  45   ARM_MEMORY_REGION_ATTRIBUTES  CacheAttributes;
  46   EFI_RESOURCE_ATTRIBUTE_TYPE   ResourceAttributes;
  47   UINTN                         Index = 0;
  48   ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;
  49   EFI_VIRTUAL_ADDRESS           SparseMemoryBase;
  50   UINT64                        SparseMemorySize;
  51
  52   ASSERT(VirtualMemoryMap != NULL);
  53
  54   ResourceAttributes =
  55       EFI_RESOURCE_ATTRIBUTE_PRESENT |
  56       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  57       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  58       EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
  59       EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
  60       EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
  61       EFI_RESOURCE_ATTRIBUTE_TESTED;
  62
  63   // Declared the additional DRAM from 2GB to 8GB
  64   SparseMemoryBase = 0x0880000000;
  65   SparseMemorySize = SIZE_2GB + SIZE_4GB;
  66
  67   BuildResourceDescriptorHob (
  68       EFI_RESOURCE_SYSTEM_MEMORY,
  69       ResourceAttributes,
  70       SparseMemoryBase,
  71       SparseMemorySize);
  72
  73   VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS));
  74   if (VirtualMemoryTable == NULL) {
  75       return;
  76   }
  77
  78   if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  79       CacheAttributes = DDR_ATTRIBUTES_CACHED;
  80   } else {
  81       CacheAttributes = DDR_ATTRIBUTES_UNCACHED;
  82   }
  83
  84   // DDR
  85   VirtualMemoryTable[Index].PhysicalBase = ARM_VE_DRAM_BASE;
  86   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_DRAM_BASE;
  87   VirtualMemoryTable[Index].Length       = ARM_VE_DRAM_SZ;
  88   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  89
  90   // CPU peripherals. TRM. Manual says not all of them are implemented.
  91   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_ON_CHIP_PERIPH_BASE;
  92   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_ON_CHIP_PERIPH_BASE;
  93   VirtualMemoryTable[Index].Length       = ARM_VE_ON_CHIP_PERIPH_SZ;
  94   VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  95
  96   // Peripheral CS2 and CS3
  97   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_PERIPH_BASE;
  98   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_PERIPH_BASE;
  99   VirtualMemoryTable[Index].Length       = 2 * ARM_VE_SMB_PERIPH_SZ;
 100   VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 101
 102   // Map sparse memory region if present
 103   VirtualMemoryTable[++Index].PhysicalBase = SparseMemoryBase;
 104   VirtualMemoryTable[Index].VirtualBase    = SparseMemoryBase;
 105   VirtualMemoryTable[Index].Length         = SparseMemorySize;
 106   VirtualMemoryTable[Index].Attributes     = CacheAttributes;
 107
 108   // End of Table
 109   VirtualMemoryTable[++Index].PhysicalBase = 0;
 110   VirtualMemoryTable[Index].VirtualBase  = 0;
 111   VirtualMemoryTable[Index].Length       = 0;
 112   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 113
 114   *VirtualMemoryMap = VirtualMemoryTable;
 115 }