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 }