ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA15-A7/CTA15-A7Mem.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2012, 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/HobLib.h>
  18 #include <Library/IoLib.h>
  19 #include <Library/MemoryAllocationLib.h>
  20 #include <Library/PcdLib.h>
  21
  22 #include <ArmPlatform.h>
  23
  24 #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 14
  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 #ifdef ARM_BIGLITTLE_TC2
  63   // Secure NOR0 Flash
  64   VirtualMemoryTable[Index].PhysicalBase    = ARM_VE_SEC_NOR0_BASE;
  65   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SEC_NOR0_BASE;
  66   VirtualMemoryTable[Index].Length          = ARM_VE_SEC_NOR0_SZ;
  67   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  68   // Secure RAM
  69   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_SEC_RAM0_BASE;
  70   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SEC_RAM0_BASE;
  71   VirtualMemoryTable[Index].Length          = ARM_VE_SEC_RAM0_SZ;
  72   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  73 #endif
  74
  75   // SMB CS0 - NOR0 Flash
  76   VirtualMemoryTable[Index].PhysicalBase    = ARM_VE_SMB_NOR0_BASE;
  77   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SMB_NOR0_BASE;
  78   VirtualMemoryTable[Index].Length          = SIZE_256KB * 255;
  79   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  80   // Environment Variables region
  81   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_SMB_NOR0_BASE + (SIZE_256KB * 255);
  82   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SMB_NOR0_BASE + (SIZE_256KB * 255);
  83   VirtualMemoryTable[Index].Length          = SIZE_64KB * 4;
  84   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  85
  86   // SMB CS1 or CS4 - NOR1 Flash
  87   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_SMB_NOR1_BASE;
  88   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SMB_NOR1_BASE;
  89   VirtualMemoryTable[Index].Length          = SIZE_256KB * 255;
  90   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  91   // Environment Variables region
  92   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_SMB_NOR1_BASE + (SIZE_256KB * 255);
  93   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SMB_NOR1_BASE + (SIZE_256KB * 255);
  94   VirtualMemoryTable[Index].Length          = SIZE_64KB * 4;
  95   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
  96
  97   // SMB CS3 or CS1 - PSRAM
  98   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_SMB_SRAM_BASE;
  99   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SMB_SRAM_BASE;
 100   VirtualMemoryTable[Index].Length          = ARM_VE_SMB_SRAM_SZ;
 101   VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 102
 103   // Motherboard peripherals
 104   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_SMB_PERIPH_BASE;
 105   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_SMB_PERIPH_BASE;
 106   VirtualMemoryTable[Index].Length          = ARM_VE_SMB_PERIPH_SZ;
 107   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 108
 109 #ifdef ARM_BIGLITTLE_TC2
 110   // Non-secure ROM
 111   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_TC2_NON_SECURE_ROM_BASE;
 112   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_TC2_NON_SECURE_ROM_BASE;
 113   VirtualMemoryTable[Index].Length          = ARM_VE_TC2_NON_SECURE_ROM_SZ;
 114   VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 115 #endif
 116
 117   // OnChip peripherals
 118   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_ONCHIP_PERIPH_BASE;
 119   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_ONCHIP_PERIPH_BASE;
 120   VirtualMemoryTable[Index].Length          = ARM_VE_ONCHIP_PERIPH_SZ;
 121   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 122
 123   // SCC Region
 124   VirtualMemoryTable[++Index].PhysicalBase  = ARM_CTA15A7_SCC_BASE;
 125   VirtualMemoryTable[Index].VirtualBase     = ARM_CTA15A7_SCC_BASE;
 126   VirtualMemoryTable[Index].Length          = SIZE_64KB;
 127   VirtualMemoryTable[Index].Attributes      = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
 128
 129 #ifdef ARM_BIGLITTLE_TC2
 130   // TC2 OnChip non-secure SRAM
 131   VirtualMemoryTable[++Index].PhysicalBase  = ARM_VE_TC2_NON_SECURE_SRAM_BASE;
 132   VirtualMemoryTable[Index].VirtualBase     = ARM_VE_TC2_NON_SECURE_SRAM_BASE;
 133   VirtualMemoryTable[Index].Length          = ARM_VE_TC2_NON_SECURE_SRAM_SZ;
 134   VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 135 #endif
 136
 137 #ifndef ARM_BIGLITTLE_TC2
 138   // Workaround for SRAM bug in RTSM
 139   if (PcdGet64 (PcdSystemMemoryBase) != 0x80000000) {
 140     VirtualMemoryTable[++Index].PhysicalBase  = 0x80000000;
 141     VirtualMemoryTable[Index].VirtualBase     = 0x80000000;
 142     VirtualMemoryTable[Index].Length          = PcdGet64 (PcdSystemMemoryBase) - 0x80000000;
 143     VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 144   }
 145 #endif
 146
 147   // DDR
 148   VirtualMemoryTable[++Index].PhysicalBase  = PcdGet64 (PcdSystemMemoryBase);
 149   VirtualMemoryTable[Index].VirtualBase     = PcdGet64 (PcdSystemMemoryBase);
 150   VirtualMemoryTable[Index].Length          = PcdGet64 (PcdSystemMemorySize);
 151   VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 152
 153   // Detect if it is a 1GB or 2GB Test Chip
 154   //   [16:19]: 0=1GB TC2, 1=2GB TC2
 155   if (MmioRead32(ARM_VE_SYS_PROCID0_REG) & (0xF << 16)) {
 156     DEBUG((EFI_D_ERROR,"Info: 2GB Test Chip 2 detected.\n"));
 157     BuildResourceDescriptorHob (
 158         EFI_RESOURCE_SYSTEM_MEMORY,
 159         EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
 160           EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
 161           EFI_RESOURCE_ATTRIBUTE_TESTED,
 162         PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize),
 163         SIZE_1GB
 164     );
 165
 166     // Map the additional 1GB into the MMU
 167     VirtualMemoryTable[++Index].PhysicalBase  = PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize);
 168     VirtualMemoryTable[Index].VirtualBase     = PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize);
 169     VirtualMemoryTable[Index].Length          = SIZE_1GB;
 170     VirtualMemoryTable[Index].Attributes      = CacheAttributes;
 171   }
 172
 173   // End of Table
 174   VirtualMemoryTable[++Index].PhysicalBase  = 0;
 175   VirtualMemoryTable[Index].VirtualBase     = 0;
 176   VirtualMemoryTable[Index].Length          = 0;
 177   VirtualMemoryTable[Index].Attributes      = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 178
 179   ASSERT((Index + 1) <= MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
 180
 181   *VirtualMemoryMap = VirtualMemoryTable;
 182 }