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 #include <ArmPlatform.h>
  22
  23 // Number of Virtual Memory Map Descriptors without a Logic Tile
  24 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS          6
  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 #define DDR_ATTRIBUTES_SECURE_CACHED    ARM_MEMORY_REGION_ATTRIBUTE_SECURE_WRITE_BACK
  30 #define DDR_ATTRIBUTES_SECURE_UNCACHED  ARM_MEMORY_REGION_ATTRIBUTE_SECURE_UNCACHED_UNBUFFERED
  31
  32 /**
  33   Return the Virtual Memory Map of your platform
  34
  35   This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
  36
  37   @param[out]   VirtualMemoryMap    Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
  38                                     Virtual Memory mapping. This array must be ended by a zero-filled
  39                                     entry
  40
  41 **/
  42 VOID
  43 ArmPlatformGetVirtualMemoryMap (
  44   IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
  45   )
  46 {
  47   ARM_MEMORY_REGION_ATTRIBUTES  CacheAttributes;
  48   BOOLEAN                       bTrustzoneSupport;
  49   UINTN                         Index = 0;
  50   ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;
  51
  52   ASSERT(VirtualMemoryMap != NULL);
  53
  54   VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS));
  55   if (VirtualMemoryTable == NULL) {
  56       return;
  57   }
  58
  59   // Check if SMC TZASC is enabled. If Trustzone not enabled then all the entries remain in Secure World.
  60   // As this value can be changed in the Board Configuration file, the UEFI firmware needs to work for both case
  61   if (ArmPlatformTrustzoneSupported ()) {
  62     bTrustzoneSupport = TRUE;
  63   } else {
  64       bTrustzoneSupport = FALSE;
  65   }
  66
  67   if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  68       CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_CACHED : DDR_ATTRIBUTES_SECURE_CACHED);
  69   } else {
  70       CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_UNCACHED : DDR_ATTRIBUTES_SECURE_UNCACHED);
  71   }
  72
  73   // ReMap (Either NOR Flash or DRAM)
  74   VirtualMemoryTable[Index].PhysicalBase = ARM_VE_REMAP_BASE;
  75   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_REMAP_BASE;
  76   VirtualMemoryTable[Index].Length       = ARM_VE_REMAP_SZ;
  77
  78   if (FeaturePcdGet(PcdNorFlashRemapping)) {
  79     // Map the NOR Flash as Secure Memory
  80     if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  81       VirtualMemoryTable[Index].Attributes   = DDR_ATTRIBUTES_SECURE_CACHED;
  82     } else {
  83       VirtualMemoryTable[Index].Attributes   = DDR_ATTRIBUTES_SECURE_UNCACHED;
  84     }
  85   } else {
  86     // DRAM mapping
  87     VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  88   }
  89
  90   // DDR
  91   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_DRAM_BASE;
  92   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_DRAM_BASE;
  93   VirtualMemoryTable[Index].Length       = ARM_VE_DRAM_SZ;
  94   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  95
  96   // SMC CS7
  97   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  98   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  99   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_MB_ON_CHIP_PERIPH_SZ;
 100   VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 101
 102   // SMB CS0-CS1 - NOR Flash 1 & 2
 103   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_NOR0_BASE;
 104   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_NOR0_BASE;
 105   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_NOR0_SZ + ARM_VE_SMB_NOR1_SZ;
 106   VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 107
 108   // SMB CS2 - SRAM
 109   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_SRAM_BASE;
 110   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_SRAM_BASE;
 111   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_SRAM_SZ;
 112   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
 113
 114   // SMB CS3-CS6 - Motherboard Peripherals
 115   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_PERIPH_BASE;
 116   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_PERIPH_BASE;
 117   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_PERIPH_SZ;
 118   VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 119
 120   // If a Logic Tile is connected to The ARM Versatile Express Motherboard
 121   if (MmioRead32(ARM_VE_SYS_PROCID1_REG) != 0) {
 122       VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_EXT_AXI_BASE;
 123       VirtualMemoryTable[Index].VirtualBase  = ARM_VE_EXT_AXI_BASE;
 124       VirtualMemoryTable[Index].Length       = ARM_VE_EXT_AXI_SZ;
 125       VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 126
 127       ASSERT((Index + 1) == (MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS + 1));
 128   } else {
 129     ASSERT((Index + 1) == MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
 130   }
 131
 132   // End of Table
 133   VirtualMemoryTable[++Index].PhysicalBase = 0;
 134   VirtualMemoryTable[Index].VirtualBase  = 0;
 135   VirtualMemoryTable[Index].Length       = 0;
 136   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 137
 138   *VirtualMemoryMap = VirtualMemoryTable;
 139 }
 140
 141 /**
 142   Return the EFI Memory Map provided by extension memory on your platform
 143
 144   This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
 145   Descriptor HOBs used by DXE core.
 146
 147   @param[out]   EfiMemoryMap        Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
 148                                     EFI Memory region. This array must be ended by a zero-filled entry
 149
 150 **/
 151 EFI_STATUS
 152 ArmPlatformGetAdditionalSystemMemory (
 153   OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR** EfiMemoryMap
 154   )
 155 {
 156   return EFI_UNSUPPORTED;
 157 }