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                       TrustzoneSupport;
  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   TrustzoneSupport = PcdGetBool (PcdTrustzoneSupport);
  62
  63   if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  64       CacheAttributes = (TrustzoneSupport ? DDR_ATTRIBUTES_CACHED : DDR_ATTRIBUTES_SECURE_CACHED);
  65   } else {
  66       CacheAttributes = (TrustzoneSupport ? DDR_ATTRIBUTES_UNCACHED : DDR_ATTRIBUTES_SECURE_UNCACHED);
  67   }
  68
  69   if (FeaturePcdGet(PcdNorFlashRemapping) == FALSE) {
  70     // ReMap (Either NOR Flash or DRAM)
  71     VirtualMemoryTable[Index].PhysicalBase = ARM_VE_REMAP_BASE;
  72     VirtualMemoryTable[Index].VirtualBase  = ARM_VE_REMAP_BASE;
  73     VirtualMemoryTable[Index].Length       = ARM_VE_REMAP_SZ;
  74     VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  75   }
  76
  77   // DDR
  78   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_DRAM_BASE;
  79   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_DRAM_BASE;
  80   VirtualMemoryTable[Index].Length       = ARM_VE_DRAM_SZ;
  81   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  82
  83   // SMC CS7
  84   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  85   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  86   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_MB_ON_CHIP_PERIPH_SZ;
  87   VirtualMemoryTable[Index].Attributes   = (TrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  88
  89   // SMB CS0-CS1 - NOR Flash 1 & 2
  90   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_NOR0_BASE;
  91   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_NOR0_BASE;
  92   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_NOR0_SZ + ARM_VE_SMB_NOR1_SZ;
  93   VirtualMemoryTable[Index].Attributes   = (TrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  94
  95   // SMB CS2 - SRAM
  96   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_SRAM_BASE;
  97   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_SRAM_BASE;
  98   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_SRAM_SZ;
  99   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
 100
 101   // SMB CS3-CS6 - Motherboard Peripherals
 102   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_PERIPH_BASE;
 103   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_PERIPH_BASE;
 104   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_PERIPH_SZ;
 105   VirtualMemoryTable[Index].Attributes   = (TrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 106
 107   // If a Logic Tile is connected to The ARM Versatile Express Motherboard
 108   if (MmioRead32(ARM_VE_SYS_PROCID1_REG) != 0) {
 109       VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_EXT_AXI_BASE;
 110       VirtualMemoryTable[Index].VirtualBase  = ARM_VE_EXT_AXI_BASE;
 111       VirtualMemoryTable[Index].Length       = ARM_VE_EXT_AXI_SZ;
 112       VirtualMemoryTable[Index].Attributes   = (TrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 113
 114       ASSERT((Index + 1) == (MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS + 1));
 115   } else {
 116     ASSERT((Index + 1) == MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
 117   }
 118
 119   // End of Table
 120   VirtualMemoryTable[++Index].PhysicalBase = 0;
 121   VirtualMemoryTable[Index].VirtualBase  = 0;
 122   VirtualMemoryTable[Index].Length       = 0;
 123   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 124
 125   *VirtualMemoryMap = VirtualMemoryTable;
 126 }
 127
 128 /**
 129   Return the EFI Memory Map provided by extension memory on your platform
 130
 131   This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
 132   Descriptor HOBs used by DXE core.
 133
 134   @param[out]   EfiMemoryMap        Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
 135                                     EFI Memory region. This array must be ended by a zero-filled entry
 136
 137 **/
 138 EFI_STATUS
 139 ArmPlatformGetAdditionalSystemMemory (
 140   OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR** EfiMemoryMap
 141   )
 142 {
 143   return EFI_UNSUPPORTED;
 144 }