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 // 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                        val32;
  39     UINT32                        CacheAttributes;
  40     BOOLEAN                       bTrustzoneSupport;
  41     UINTN                         Index = 0;
  42     ARM_MEMORY_REGION_DESCRIPTOR  *VirtualMemoryTable;
  43
  44     ASSERT(VirtualMemoryMap != NULL);
  45
  46     VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages(sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * 9);
  47     if (VirtualMemoryTable == NULL) {
  48         return;
  49     }
  50
  51     // Check if SMC TZASC is enabled. If Trustzone not enabled then all the entries remain in Secure World.
  52     // As this value can be changed in the Board Configuration file, the UEFI firmware needs to work for both case
  53     val32 = MmioRead32(ARM_VE_SYS_CFGRW1_REG);
  54     if (ARM_VE_CFGRW1_TZASC_EN_BIT_MASK & val32) {
  55         bTrustzoneSupport = TRUE;
  56     } else {
  57         bTrustzoneSupport = FALSE;
  58     }
  59
  60     if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
  61         CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_CACHED : DDR_ATTRIBUTES_SECURE_CACHED);
  62     } else {
  63         CacheAttributes = (bTrustzoneSupport ? DDR_ATTRIBUTES_UNCACHED : DDR_ATTRIBUTES_SECURE_UNCACHED);
  64     }
  65
  66     // ReMap (Either NOR Flash or DRAM)
  67     VirtualMemoryTable[Index].PhysicalBase = ARM_VE_REMAP_BASE;
  68     VirtualMemoryTable[Index].VirtualBase  = ARM_VE_REMAP_BASE;
  69     VirtualMemoryTable[Index].Length       = ARM_VE_REMAP_SZ;
  70     VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
  71
  72     // DDR
  73     VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_DRAM_BASE;
  74     VirtualMemoryTable[Index].VirtualBase  = ARM_VE_DRAM_BASE;
  75     VirtualMemoryTable[Index].Length       = ARM_VE_DRAM_SZ;
  76     VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
  77
  78     // SMC CS7
  79     VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  80     VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_MB_ON_CHIP_PERIPH_BASE;
  81     VirtualMemoryTable[Index].Length       = ARM_VE_SMB_MB_ON_CHIP_PERIPH_SZ;
  82     VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  83
  84     // SMB CS0-CS1 - NOR Flash 1 & 2
  85     VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_NOR0_BASE;
  86     VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_NOR0_BASE;
  87     VirtualMemoryTable[Index].Length       = ARM_VE_SMB_NOR0_SZ + ARM_VE_SMB_NOR1_SZ;
  88     VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
  89
  90     // SMB CS2 - SRAM
  91     VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_SRAM_BASE;
  92     VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_SRAM_BASE;
  93     VirtualMemoryTable[Index].Length       = ARM_VE_SMB_SRAM_SZ;
  94     VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
  95
  96     // SMB CS3-CS6 - Motherboard Peripherals
  97     VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_SMB_PERIPH_BASE;
  98     VirtualMemoryTable[Index].VirtualBase  = ARM_VE_SMB_PERIPH_BASE;
  99     VirtualMemoryTable[Index].Length       = ARM_VE_SMB_PERIPH_SZ;
 100     VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 101
 102     // If a Logic Tile is connected to The ARM Versatile Express Motherboard
 103     if (MmioRead32(ARM_VE_SYS_PROCID1_REG) != 0) {
 104         VirtualMemoryTable[++Index].PhysicalBase = ARM_VE_EXT_AXI_BASE;
 105         VirtualMemoryTable[Index].VirtualBase  = ARM_VE_EXT_AXI_BASE;
 106         VirtualMemoryTable[Index].Length       = ARM_VE_EXT_AXI_SZ;
 107         VirtualMemoryTable[Index].Attributes   = (bTrustzoneSupport ? ARM_MEMORY_REGION_ATTRIBUTE_DEVICE : ARM_MEMORY_REGION_ATTRIBUTE_SECURE_DEVICE);
 108     }
 109
 110     // End of Table
 111     VirtualMemoryTable[++Index].PhysicalBase = 0;
 112     VirtualMemoryTable[Index].VirtualBase  = 0;
 113     VirtualMemoryTable[Index].Length       = 0;
 114     VirtualMemoryTable[Index].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
 115
 116     *VirtualMemoryMap = VirtualMemoryTable;
 117 }
 118
 119 /**
 120   Return the EFI Memory Map of your platform
 121
 122   This EFI Memory Map of the System Memory is used by MemoryInitPei module to create the Resource
 123   Descriptor HOBs used by DXE core.
 124
 125   @param[out]   EfiMemoryMap        Array of ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR describing an
 126                                     EFI Memory region. This array must be ended by a zero-filled entry
 127
 128 **/
 129 EFI_STATUS
 130 ArmPlatformGetAdditionalSystemMemory (
 131   OUT ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR** EfiMemoryMap
 132   )
 133 {
 134   return EFI_UNSUPPORTED;
 135 }