ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011, 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/PcdLib.h>
  18 #include <Library/IoLib.h>
  19 #include <Library/MemoryAllocationLib.h>
  20 #include <ArmPlatform.h>
  21
  22 // Number of Virtual Memory Map Descriptors without a Logic Tile
  23 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS          5
  24
  25 // DDR attributes
  26 #define DDR_ATTRIBUTES_CACHED           ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
  27 #define DDR_ATTRIBUTES_UNCACHED         ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
  28
  29 /**
  30   Return the Virtual Memory Map of your platform
  31
  32   This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
  33
  34   @param[out]   VirtualMemoryMap    Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
  35                                     Virtual Memory mapping. This array must be ended by a zero-filled
  36                                     entry
  37
  38 **/
  39 VOID
  40 ArmPlatformGetVirtualMemoryMap (
  41   IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
  42   )
  43 {
  44   ARM_MEMORY_REGION_ATTRIBUTES  CacheAttributes;
  45   UINTN                         Index = 0;
  46   ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;
  47
  48   ASSERT(VirtualMemoryMap != NULL);
  49
  50   VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS));
  51   if (VirtualMemoryTable == NULL) {
  52       return;
  53   }
  54
  55   if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  56       CacheAttributes = DDR_ATTRIBUTES_CACHED;
  57   } else {
  58       CacheAttributes = DDR_ATTRIBUTES_UNCACHED;
  59   }
  60
  61   // ReMap (Either NOR Flash or DRAM)
  62   VirtualMemoryTable[Index].PhysicalBase = ARM_VE_REMAP_BASE;
  63   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_REMAP_BASE;
  64   VirtualMemoryTable[Index].Length       = ARM_VE_REMAP_SZ;
  65
  66   if (FeaturePcdGet(PcdNorFlashRemapping) == FALSE) {
  67     // Map the NOR Flash as Secure Memory
  68     if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  69       VirtualMemoryTable[Index].Attributes   = DDR_ATTRIBUTES_CACHED;
  70     } else {
  71       VirtualMemoryTable[Index].Attributes   = DDR_ATTRIBUTES_UNCACHED;
  72     }
  73   } else {
  74     // DRAM mapping
  75     VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  76   }
  77
  78   // DDR
  79   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_DRAM_BASE;
  80   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_DRAM_BASE;
  81   VirtualMemoryTable[Index].Length       = ARM_VE_DRAM_SZ;
  82   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  83
  84   // CPU peripherals. TRM. Manual says not all of them are implemented.
  85   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_ON_CHIP_PERIPH_BASE;
  86   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_ON_CHIP_PERIPH_BASE;
  87   VirtualMemoryTable[Index].Length       = ARM_VE_ON_CHIP_PERIPH_SZ;
  88   VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  89
  90   // SMB CS0-CS1 - NOR Flash 1 & 2
  91   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_NOR0_BASE;
  92   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_NOR0_BASE;
  93   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_NOR0_SZ + ARM_VE_SMB_NOR1_SZ;
  94   VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  95
  96   // SMB CS2 - SRAM
  97   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_SRAM_BASE;
  98   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_SRAM_BASE;
  99   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_SRAM_SZ;
 100   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
 101
 102   // Peripheral CS2 and CS3
 103   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_PERIPH_BASE;
 104   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_PERIPH_BASE;
 105   VirtualMemoryTable[Index].Length       = 2 * ARM_VE_SMB_PERIPH_SZ;
 106   VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 107
 108 //TODO:This should be enabled for final release. Right now, ARM VE RTSM crashes.
 109 //  // If a Logic Tile is connected to The ARM Versatile Express Motherboard
 110 //  if (MmioRead32(ARM_VE_SYS_PROCID1_REG) != 0) {
 111 //      VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_EXT_AXI_BASE;
 112 //      VirtualMemoryTable[Index].VirtualBase  = ARM_VE_EXT_AXI_BASE;
 113 //      VirtualMemoryTable[Index].Length       = ARM_VE_EXT_AXI_SZ;
 114 //      VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 115 //
 116 //      ASSERT((Index + 1) == (MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS + 1));
 117 //  } else {
 118 //    ASSERT((Index + 1) == MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
 119 //  }
 120
 121   // End of Table
 122   VirtualMemoryTable[++Index].PhysicalBase = 0;
 123   VirtualMemoryTable[Index].VirtualBase  = 0;
 124   VirtualMemoryTable[Index].Length       = 0;
 125   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 126
 127   *VirtualMemoryMap = VirtualMemoryTable;
 128 }
 129
 130 /**
 131   Return the EFI Memory Map provided by extension memory on your platform
 132
 133   This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
 134   Descriptor HOBs used by DXE core.
 135   TODO: CompleteMe .... say this is the memory not covered by the System Memory PCDs
 136
 137   @param[out]   EfiMemoryMap        Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
 138                                     EFI Memory region. This array must be ended by a zero-filled entry
 139
 140 **/
 141 EFI_STATUS
 142 ArmPlatformGetAdditionalSystemMemory (
 143   OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR** EfiMemoryMap
 144   )
 145 {
 146   return EFI_UNSUPPORTED;
 147 }