ArmPlatformPkg/ArmVExpressPkg/Library/NorFlashArmVExpressLib/NorFlashArmVExpress.c

   1 /** @file
   2
   3  Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>
   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 <PiDxe.h>
  16 #include <Library/DebugLib.h>
  17 #include <Library/IoLib.h>
  18 #include <Library/NorFlashPlatformLib.h>
  19 #include <ArmPlatform.h>
  20
  21 #define NOR_FLASH_DEVICE_COUNT                     4
  22
  23 NOR_FLASH_DESCRIPTION mNorFlashDevices[NOR_FLASH_DEVICE_COUNT] = {
  24   { // BootMon
  25     ARM_VE_SMB_NOR0_BASE,
  26     ARM_VE_SMB_NOR0_BASE,
  27     SIZE_256KB * 255,
  28     SIZE_256KB,
  29     {0xE7223039, 0x5836, 0x41E1, 0xB5, 0x42, 0xD7, 0xEC, 0x73, 0x6C, 0x5E, 0x59}
  30   },
  31   { // BootMon non-volatile storage
  32     ARM_VE_SMB_NOR0_BASE,
  33     ARM_VE_SMB_NOR0_BASE + SIZE_256KB * 255,
  34     SIZE_64KB * 4,
  35     SIZE_64KB,
  36     {0x02118005, 0x9DA7, 0x443A, 0x92, 0xD5, 0x78, 0x1F, 0x02, 0x2A, 0xED, 0xBB}
  37   },
  38   { // UEFI
  39     ARM_VE_SMB_NOR1_BASE,
  40     ARM_VE_SMB_NOR1_BASE,
  41     SIZE_256KB * 255,
  42     SIZE_256KB,
  43     {0x1F15DA3C, 0x37FF, 0x4070, 0xB4, 0x71, 0xBB, 0x4A, 0xF1, 0x2A, 0x72, 0x4A}
  44   },
  45   { // UEFI Variable Services non-volatile storage
  46     ARM_VE_SMB_NOR1_BASE,
  47     ARM_VE_SMB_NOR1_BASE + SIZE_256KB * 255,
  48     SIZE_64KB * 3, //FIXME: Set 3 blocks because I did not succeed to copy 4 blocks into the ARM Versatile Express NOR Flash in the last NOR Flash. It should be 4 blocks
  49     SIZE_64KB,
  50     {0xCC2CBF29, 0x1498, 0x4CDD, 0x81, 0x71, 0xF8, 0xB6, 0xB4, 0x1D, 0x09, 0x09}
  51   }
  52 };
  53
  54 EFI_STATUS
  55 NorFlashPlatformInitialization (
  56   VOID
  57   )
  58 {
  59   // Everything seems ok so far, so now we need to disable the platform-specific
  60   // flash write protection for Versatile Express
  61   if ((MmioRead32 (ARM_VE_SYS_FLASH) & 0x1) == 0) {
  62     // Writing to NOR FLASH is disabled, so enable it
  63     MmioWrite32 (ARM_VE_SYS_FLASH,1);
  64     DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: informational - Had to enable HSYS_FLASH flag.\n" ));
  65   }
  66
  67   return EFI_SUCCESS;
  68 }
  69
  70 EFI_STATUS
  71 NorFlashPlatformGetDevices (
  72   OUT NOR_FLASH_DESCRIPTION   **NorFlashDevices,
  73   OUT UINT32                  *Count
  74   )
  75 {
  76   if ((NorFlashDevices == NULL) || (Count == NULL)) {
  77     return EFI_INVALID_PARAMETER;
  78   }
  79
  80   *NorFlashDevices = mNorFlashDevices;
  81   *Count = NOR_FLASH_DEVICE_COUNT;
  82
  83   return EFI_SUCCESS;
  84 }