ArmPlatformPkg/ArmJunoPkg/Library/ArmJunoLib/ArmJunoMem.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2013-2014, 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
  22 #include <ArmPlatform.h>
  23
  24 // The total number of descriptors, including the final "end-of-table" descriptor.
  25 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 12
  26
  27 // DDR attributes
  28 #define DDR_ATTRIBUTES_CACHED           ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
  29 #define DDR_ATTRIBUTES_UNCACHED         ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
  30
  31 /**
  32   Return the Virtual Memory Map of your platform
  33
  34   This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
  35
  36   @param[out]   VirtualMemoryMap    Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
  37                                     Virtual Memory mapping. This array must be ended by a zero-filled
  38                                     entry
  39
  40 **/
  41 VOID
  42 ArmPlatformGetVirtualMemoryMap (
  43   IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
  44   )
  45 {
  46   ARM_MEMORY_REGION_ATTRIBUTES  CacheAttributes;
  47   UINTN                         Index = 0;
  48   ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;
  49   EFI_RESOURCE_ATTRIBUTE_TYPE   ResourceAttributes;
  50
  51   ASSERT (VirtualMemoryMap != NULL);
  52
  53   //
  54   // Declared the additional 6GB of memory
  55   //
  56   ResourceAttributes =
  57       EFI_RESOURCE_ATTRIBUTE_PRESENT |
  58       EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  59       EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  60       EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
  61       EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
  62       EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
  63       EFI_RESOURCE_ATTRIBUTE_TESTED;
  64
  65   BuildResourceDescriptorHob (
  66     EFI_RESOURCE_SYSTEM_MEMORY,
  67     ResourceAttributes,
  68     ARM_JUNO_EXTRA_SYSTEM_MEMORY_BASE,
  69     ARM_JUNO_EXTRA_SYSTEM_MEMORY_SZ);
  70
  71   VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS));
  72   if (VirtualMemoryTable == NULL) {
  73       return;
  74   }
  75
  76   if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  77       CacheAttributes = DDR_ATTRIBUTES_CACHED;
  78   } else {
  79       CacheAttributes = DDR_ATTRIBUTES_UNCACHED;
  80   }
  81
  82   // SMB CS0 - NOR0 Flash
  83   VirtualMemoryTable[Index].PhysicalBase    = ARM_VE_SMB_NOR0_BASE;
  84   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SMB_NOR0_BASE;
  85   VirtualMemoryTable[Index].Length          = SIZE_256KB * 255;
  86   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  87   // Environment Variables region
  88   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_SMB_NOR0_BASE + (SIZE_256KB * 255);
  89   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SMB_NOR0_BASE + (SIZE_256KB * 255);
  90   VirtualMemoryTable[Index].Length          = SIZE_64KB * 4;
  91   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  92
  93   // SMB CS2 & CS3 - Off-chip (motherboard) peripherals
  94   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_SMB_PERIPH_BASE;
  95   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SMB_PERIPH_BASE;
  96   VirtualMemoryTable[Index].Length          = ARM_VE_SMB_PERIPH_SZ;
  97   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  98
  99   // Juno OnChip non-secure ROM
 100   VirtualMemoryTable[++Index].PhysicalBase  = ARM_JUNO_NON_SECURE_ROM_BASE;
 101   VirtualMemoryTable[Index].VirtualBase     = ARM_JUNO_NON_SECURE_ROM_BASE;
 102   VirtualMemoryTable[Index].Length          = ARM_JUNO_NON_SECURE_ROM_SZ;
 103   VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 104
 105   // Juno OnChip peripherals
 106   VirtualMemoryTable[++Index].PhysicalBase  = ARM_JUNO_PERIPHERALS_BASE;
 107   VirtualMemoryTable[Index].VirtualBase     = ARM_JUNO_PERIPHERALS_BASE;
 108   VirtualMemoryTable[Index].Length          = ARM_JUNO_PERIPHERALS_SZ;
 109   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 110
 111   // Juno OnChip non-secure SRAM
 112   VirtualMemoryTable[++Index].PhysicalBase  = ARM_JUNO_NON_SECURE_SRAM_BASE;
 113   VirtualMemoryTable[Index].VirtualBase     = ARM_JUNO_NON_SECURE_SRAM_BASE;
 114   VirtualMemoryTable[Index].Length          = ARM_JUNO_NON_SECURE_SRAM_SZ;
 115   VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 116
 117   // Juno SOC peripherals
 118   VirtualMemoryTable[++Index].PhysicalBase  = ARM_JUNO_SOC_PERIPHERALS_BASE;
 119   VirtualMemoryTable[Index].VirtualBase     = ARM_JUNO_SOC_PERIPHERALS_BASE;
 120   VirtualMemoryTable[Index].Length          = ARM_JUNO_SOC_PERIPHERALS_SZ;
 121   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 122
 123   // DDR - 2GB
 124   VirtualMemoryTable[++Index].PhysicalBase  = PcdGet64 (PcdSystemMemoryBase);
 125   VirtualMemoryTable[Index].VirtualBase     = PcdGet64 (PcdSystemMemoryBase);
 126   VirtualMemoryTable[Index].Length          = PcdGet64 (PcdSystemMemorySize);
 127   VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 128
 129   // DDR - 6GB
 130   VirtualMemoryTable[++Index].PhysicalBase  = ARM_JUNO_EXTRA_SYSTEM_MEMORY_BASE;
 131   VirtualMemoryTable[Index].VirtualBase     = ARM_JUNO_EXTRA_SYSTEM_MEMORY_BASE;
 132   VirtualMemoryTable[Index].Length          = ARM_JUNO_EXTRA_SYSTEM_MEMORY_SZ;
 133   VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 134
 135   // End of Table
 136   VirtualMemoryTable[++Index].PhysicalBase  = 0;
 137   VirtualMemoryTable[Index].VirtualBase     = 0;
 138   VirtualMemoryTable[Index].Length          = 0;
 139   VirtualMemoryTable[Index].Attributes      = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 140
 141   ASSERT((Index + 1) <= MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
 142
 143   *VirtualMemoryMap = VirtualMemoryTable;
 144 }