ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Mem.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
  21 // Number of Virtual Memory Map Descriptors without a Logic Tile
  22 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS          6
  23
  24 // DDR attributes
  25 #define DDR_ATTRIBUTES_CACHED           ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
  26 #define DDR_ATTRIBUTES_UNCACHED         ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
  27 #define DDR_ATTRIBUTES_SECURE_CACHED    ARM_MEMORY_REGION_ATTRIBUTE_SECURE_WRITE_BACK
  28 #define DDR_ATTRIBUTES_SECURE_UNCACHED  ARM_MEMORY_REGION_ATTRIBUTE_SECURE_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   BOOLEAN                       bTrustzoneSupport;
  47   UINTN                         Index = 0;
  48   ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;
  49
  50   ASSERT(VirtualMemoryMap != NULL);
  51
  52   VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS));
  53   if (VirtualMemoryTable == NULL) {
  54       return;
  55   }
  56
  57   // Check if SMC TZASC is enabled. If Trustzone not enabled then all the entries remain in Secure World.
  58   // As this value can be changed in the Board Configuration file, the UEFI firmware needs to work for both case
  59   if (ArmPlatformTrustzoneSupported ()) {
  60     bTrustzoneSupport = TRUE;
  61   } else {
  62       bTrustzoneSupport = FALSE;
  63   }
  64
  65   if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  66       CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_CACHED : DDR_ATTRIBUTES_SECURE_CACHED);
  67   } else {
  68       CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_UNCACHED : DDR_ATTRIBUTES_SECURE_UNCACHED);
  69   }
  70
  71   // ReMap (Either NOR Flash or DRAM)
  72   VirtualMemoryTable[Index].PhysicalBase = ARM_VE_REMAP_BASE;
  73   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_REMAP_BASE;
  74   VirtualMemoryTable[Index].Length       = ARM_VE_REMAP_SZ;
  75
  76   if (FeaturePcdGet(PcdNorFlashRemapping)) {
  77     // Map the NOR Flash as Secure Memory
  78     if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  79       VirtualMemoryTable[Index].Attributes   = DDR_ATTRIBUTES_SECURE_CACHED;
  80     } else {
  81       VirtualMemoryTable[Index].Attributes   = DDR_ATTRIBUTES_SECURE_UNCACHED;
  82     }
  83   } else {
  84     // DRAM mapping
  85     VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  86   }
  87
  88   // DDR
  89   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_DRAM_BASE;
  90   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_DRAM_BASE;
  91   VirtualMemoryTable[Index].Length       = ARM_VE_DRAM_SZ;
  92   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  93
  94   // SMC CS7
  95   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  96   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  97   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_MB_ON_CHIP_PERIPH_SZ;
  98   VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  99
 100   // SMB CS0-CS1 - NOR Flash 1 & 2
 101   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_NOR0_BASE;
 102   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_NOR0_BASE;
 103   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_NOR0_SZ + ARM_VE_SMB_NOR1_SZ;
 104   VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 105
 106   // SMB CS2 - SRAM
 107   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_SRAM_BASE;
 108   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_SRAM_BASE;
 109   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_SRAM_SZ;
 110   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
 111
 112   // SMB CS3-CS6 - Motherboard Peripherals
 113   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_PERIPH_BASE;
 114   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_PERIPH_BASE;
 115   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_PERIPH_SZ;
 116   VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 117
 118   // If a Logic Tile is connected to The ARM Versatile Express Motherboard
 119   if (MmioRead32(ARM_VE_SYS_PROCID1_REG) != 0) {
 120       VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_EXT_AXI_BASE;
 121       VirtualMemoryTable[Index].VirtualBase  = ARM_VE_EXT_AXI_BASE;
 122       VirtualMemoryTable[Index].Length       = ARM_VE_EXT_AXI_SZ;
 123       VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 124
 125       ASSERT((Index + 1) == (MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS + 1));
 126   } else {
 127     ASSERT((Index + 1) == MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
 128   }
 129
 130   // End of Table
 131   VirtualMemoryTable[++Index].PhysicalBase = 0;
 132   VirtualMemoryTable[Index].VirtualBase  = 0;
 133   VirtualMemoryTable[Index].Length       = 0;
 134   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 135
 136   *VirtualMemoryMap = VirtualMemoryTable;
 137 }
 138
 139 /**
 140   Return the EFI Memory Map provided by extension memory on your platform
 141
 142   This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
 143   Descriptor HOBs used by DXE core.
 144
 145   @param[out]   EfiMemoryMap        Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
 146                                     EFI Memory region. This array must be ended by a zero-filled entry
 147
 148 **/
 149 EFI_STATUS
 150 ArmPlatformGetAdditionalSystemMemory (
 151   OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR** EfiMemoryMap
 152   )
 153 {
 154   return EFI_UNSUPPORTED;
 155 }