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
  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   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 = DDR_ATTRIBUTES_CACHED;
  58   } else {
  59       CacheAttributes = DDR_ATTRIBUTES_UNCACHED;
  60   }
  61
  62   if (FeaturePcdGet(PcdNorFlashRemapping) == FALSE) {
  63     // ReMap (Either NOR Flash or DRAM)
  64     VirtualMemoryTable[Index].PhysicalBase = ARM_VE_REMAP_BASE;
  65     VirtualMemoryTable[Index].VirtualBase  = ARM_VE_REMAP_BASE;
  66     VirtualMemoryTable[Index].Length       = ARM_VE_REMAP_SZ;
  67     VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  68   }
  69
  70   // DDR
  71   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_DRAM_BASE;
  72   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_DRAM_BASE;
  73   VirtualMemoryTable[Index].Length       = ARM_VE_DRAM_SZ;
  74   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  75
  76   // SMC CS7
  77   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  78   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  79   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_MB_ON_CHIP_PERIPH_SZ;
  80   VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  81
  82   // SMB CS0-CS1 - NOR Flash 1 & 2
  83   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_NOR0_BASE;
  84   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_NOR0_BASE;
  85   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_NOR0_SZ + ARM_VE_SMB_NOR1_SZ;
  86   VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  87
  88   // SMB CS2 - SRAM
  89   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_SRAM_BASE;
  90   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_SRAM_BASE;
  91   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_SRAM_SZ;
  92   VirtualMemoryTable[Index].Attributes   = CacheAttributes;
  93
  94   // SMB CS3-CS6 - Motherboard Peripherals
  95   VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_PERIPH_BASE;
  96   VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_PERIPH_BASE;
  97   VirtualMemoryTable[Index].Length       = ARM_VE_SMB_PERIPH_SZ;
  98   VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  99
 100   // If a Logic Tile is connected to The ARM Versatile Express Motherboard
 101   if (MmioRead32(ARM_VE_SYS_PROCID1_REG) != 0) {
 102       VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_EXT_AXI_BASE;
 103       VirtualMemoryTable[Index].VirtualBase  = ARM_VE_EXT_AXI_BASE;
 104       VirtualMemoryTable[Index].Length       = ARM_VE_EXT_AXI_SZ;
 105       VirtualMemoryTable[Index].Attributes   = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 106
 107       ASSERT((Index + 1) == (MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS + 1));
 108   } else {
 109     ASSERT((Index + 1) == MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
 110   }
 111
 112   // End of Table
 113   VirtualMemoryTable[++Index].PhysicalBase = 0;
 114   VirtualMemoryTable[Index].VirtualBase  = 0;
 115   VirtualMemoryTable[Index].Length       = 0;
 116   VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 117
 118   *VirtualMemoryMap = VirtualMemoryTable;
 119 }
 120
 121 /**
 122   Return the EFI Memory Map provided by extension memory on your platform
 123
 124   This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
 125   Descriptor HOBs used by DXE core.
 126
 127   @param[out]   EfiMemoryMap        Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
 128                                     EFI Memory region. This array must be ended by a zero-filled entry
 129
 130 **/
 131 EFI_STATUS
 132 ArmPlatformGetAdditionalSystemMemory (
 133   OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR** EfiMemoryMap
 134   )
 135 {
 136   return EFI_UNSUPPORTED;
 137 }