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 // DDR attributes
  22 #define DDR_ATTRIBUTES_CACHED           ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
  23 #define DDR_ATTRIBUTES_UNCACHED         ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
  24 #define DDR_ATTRIBUTES_SECURE_CACHED    ARM_MEMORY_REGION_ATTRIBUTE_SECURE_WRITE_BACK
  25 #define DDR_ATTRIBUTES_SECURE_UNCACHED  ARM_MEMORY_REGION_ATTRIBUTE_SECURE_UNCACHED_UNBUFFERED
  26
  27 /**
  28   Return the Virtual Memory Map of your platform
  29
  30   This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
  31
  32   @param[out]   VirtualMemoryMap    Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
  33                                     Virtual Memory mapping. This array must be ended by a zero-filled
  34                                     entry
  35
  36 **/
  37 VOID ArmPlatformGetVirtualMemoryMap(ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap) {
  38     UINT32                        CacheAttributes;
  39     BOOLEAN                       bTrustzoneSupport = FALSE;
  40     UINTN                         Index = 0;
  41     ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;
  42
  43     ASSERT(VirtualMemoryMap != NULL);
  44
  45     VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * 9);
  46     if (VirtualMemoryTable == NULL) {
  47         return;
  48     }
  49
  50     if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  51         CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_CACHED : DDR_ATTRIBUTES_SECURE_CACHED);
  52     } else {
  53         CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_UNCACHED : DDR_ATTRIBUTES_SECURE_UNCACHED);
  54     }
  55
  56     // ReMap (Either NOR Flash or DRAM)
  57     VirtualMemoryTable[Index].PhysicalBase = ARM_EB_REMAP_BASE;
  58     VirtualMemoryTable[Index].VirtualBase  = ARM_EB_REMAP_BASE;
  59     VirtualMemoryTable[Index].Length       = ARM_EB_REMAP_SZ;
  60     VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
  61
  62     // DDR
  63     VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_DRAM_BASE;
  64     VirtualMemoryTable[Index].VirtualBase  = ARM_EB_DRAM_BASE;
  65     VirtualMemoryTable[Index].Length       = ARM_EB_DRAM_SZ;
  66     VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
  67
  68     // SMC CS7
  69     VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE;
  70     VirtualMemoryTable[Index].VirtualBase  = ARM_EB_SMB_MB_ON_CHIP_PERIPH_BASE;
  71     VirtualMemoryTable[Index].Length       = ARM_EB_SMB_MB_ON_CHIP_PERIPH_SZ;
  72     VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  73
  74     // SMB CS0-CS1 - NOR Flash 1 & 2
  75     VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_NOR_BASE;
  76     VirtualMemoryTable[Index].VirtualBase  = ARM_EB_SMB_NOR_BASE;
  77     VirtualMemoryTable[Index].Length       = ARM_EB_SMB_NOR_SZ + ARM_EB_SMB_DOC_SZ;
  78     VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  79
  80     // SMB CS2 - SRAM
  81     VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_SRAM_BASE;
  82     VirtualMemoryTable[Index].VirtualBase  = ARM_EB_SMB_SRAM_BASE;
  83     VirtualMemoryTable[Index].Length       = ARM_EB_SMB_SRAM_SZ;
  84     VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
  85
  86     // SMB CS3-CS6 - Motherboard Peripherals
  87     VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_SMB_PERIPH_BASE;
  88     VirtualMemoryTable[Index].VirtualBase  = ARM_EB_SMB_PERIPH_BASE;
  89     VirtualMemoryTable[Index].Length       = ARM_EB_SMB_PERIPH_SZ;
  90     VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  91
  92     // If a Logic Tile is connected to The ARM Versatile Express Motherboard
  93     if (MmioRead32(ARM_EB_SYS_PROCID1_REG) != 0) {
  94         VirtualMemoryTable[++Index].PhysicalBase = ARM_EB_LOGIC_TILE_BASE;
  95         VirtualMemoryTable[Index].VirtualBase  = ARM_EB_LOGIC_TILE_BASE;
  96         VirtualMemoryTable[Index].Length       = ARM_EB_LOGIC_TILE_SZ;
  97         VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  98     }
  99
 100     // End of Table
 101     VirtualMemoryTable[++Index].PhysicalBase = 0;
 102     VirtualMemoryTable[Index].VirtualBase  = 0;
 103     VirtualMemoryTable[Index].Length       = 0;
 104     VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 105
 106     *VirtualMemoryMap = VirtualMemoryTable;
 107 }
 108
 109 /**
 110   Return the EFI Memory Map of your platform
 111
 112   This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
 113   Descriptor HOBs used by DXE core.
 114
 115   @param[out]   EfiMemoryMap        Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
 116                                     EFI Memory region. This array must be ended by a zero-filled entry
 117
 118 **/
 119 EFI_STATUS
 120 ArmPlatformGetAdditionalSystemMemory (
 121     OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR** EfiMemoryMap
 122 ) {
 123   return EFI_UNSUPPORTED;
 124 }