ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbLibRTSM/ArmRealViewEbMem.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/MemoryAllocationLib.h>
  19 #include <Library/IoLib.h>
  20
  21 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS          6
  22
  23 // DDR attributes
  24 #define DDR_ATTRIBUTES_CACHED           ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
  25 #define DDR_ATTRIBUTES_UNCACHED         ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
  26 #define DDR_ATTRIBUTES_SECURE_CACHED    ARM_MEMORY_REGION_ATTRIBUTE_SECURE_WRITE_BACK
  27 #define DDR_ATTRIBUTES_SECURE_UNCACHED  ARM_MEMORY_REGION_ATTRIBUTE_SECURE_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   UINT32                        CacheAttributes;
  45   BOOLEAN                       bTrustzoneSupport = FALSE;
  46   UINTN                         Index = 0;
  47   ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;
  48
  49   ASSERT(VirtualMemoryMap != NULL);
  50
  51   VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS));
  52   if (VirtualMemoryTable == NULL) {
  53       return;
  54   }
  55
  56   if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  57     CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_CACHED : DDR_ATTRIBUTES_SECURE_CACHED);
  58   } else {
  59     CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_UNCACHED : DDR_ATTRIBUTES_SECURE_UNCACHED);
  60   }
  61
  62   // ReMap (Either NOR Flash or DRAM)
  63   VirtualMemoryTable[Index].PhysicalBase = ARM_EB_REMAP_BASE;
  64   VirtualMemoryTable[Index].VirtualBase  = ARM_EB_REMAP_BASE;
  65   VirtualMemoryTable[Index].Length       = ARM_EB_REMAP_SZ;
  66   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
  67
  68   // DDR
  69   VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_DRAM_BASE;
  70   VirtualMemoryTable[Index].VirtualBase  = ARM_EB_DRAM_BASE;
  71   VirtualMemoryTable[Index].Length       = ARM_EB_DRAM_SZ;
  72   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
  73
  74   // SMC CS7
  75   VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE;
  76   VirtualMemoryTable[Index].VirtualBase  = ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE;
  77   VirtualMemoryTable[Index].Length       = ARM_EB_SMB_MB_ON_CHIP_PERIPH_SZ;
  78   VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  79
  80   // SMB CS0-CS1 - NOR Flash 1 & 2
  81   VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_NOR_BASE;
  82   VirtualMemoryTable[Index].VirtualBase  = ARM_EB_SMB_NOR_BASE;
  83   VirtualMemoryTable[Index].Length       = ARM_EB_SMB_NOR_SZ + ARM_EB_SMB_DOC_SZ;
  84   VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  85
  86   // SMB CS2 - SRAM
  87   VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_SRAM_BASE;
  88   VirtualMemoryTable[Index].VirtualBase  = ARM_EB_SMB_SRAM_BASE;
  89   VirtualMemoryTable[Index].Length       = ARM_EB_SMB_SRAM_SZ;
  90   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
  91
  92   // SMB CS3-CS6 - Motherboard Peripherals
  93   VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_PERIPH_BASE;
  94   VirtualMemoryTable[Index].VirtualBase  = ARM_EB_SMB_PERIPH_BASE;
  95   VirtualMemoryTable[Index].Length       = ARM_EB_SMB_PERIPH_SZ;
  96   VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  97
  98   // If a Logic Tile is connected to The ARM Versatile Express Motherboard
  99   if (MmioRead32(ARM_EB_SYS_PROCID1_REG) != 0) {
 100       VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_LOGIC_TILE_BASE;
 101       VirtualMemoryTable[Index].VirtualBase  = ARM_EB_LOGIC_TILE_BASE;
 102       VirtualMemoryTable[Index].Length       = ARM_EB_LOGIC_TILE_SZ;
 103       VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 104
 105       ASSERT((Index + 1) == (MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS + 1));
 106   } else {
 107     ASSERT((Index + 1) == MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
 108   }
 109
 110   // End of Table
 111   VirtualMemoryTable[++Index].PhysicalBase = 0;
 112   VirtualMemoryTable[Index].VirtualBase  = 0;
 113   VirtualMemoryTable[Index].Length       = 0;
 114   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 115
 116   *VirtualMemoryMap = VirtualMemoryTable;
 117 }
 118
 119 /**
 120   Return the EFI Memory Map of your platform
 121
 122   This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
 123   Descriptor HOBs used by DXE core.
 124
 125   @param[out]   EfiMemoryMap        Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
 126                                     EFI Memory region. This array must be ended by a zero-filled entry
 127
 128 **/
 129 EFI_STATUS
 130 ArmPlatformGetAdditionalSystemMemory (
 131   OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR** EfiMemoryMap
 132   )
 133 {
 134   return EFI_UNSUPPORTED;
 135 }