ArmPlatformPkg/ArmVExpressPkg/Library/NorFlashArmVExpressLib/NorFlashArmVExpress.c

   1 /** @file
   2
   3  Copyright (c) 2011, ARM Ltd. All rights reserved.<BR>
   4  This program and the accompanying materials
   5  are licensed and made available under the terms and conditions of the BSD License
   6  which accompanies this distribution.  The full text of the license may be found at
   7  http://opensource.org/licenses/bsd-license.php
   8
   9  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12  **/
  13
  14 #include <PiDxe.h>
  15 #include <Library/DebugLib.h>
  16 #include <Library/IoLib.h>
  17 #include <Library/NorFlashPlatformLib.h>
  18 #include <ArmPlatform.h>
  19
  20 #define NOR_FLASH_DEVICE_COUNT                     4
  21
  22 NOR_FLASH_DESCRIPTION mNorFlashDevices[NOR_FLASH_DEVICE_COUNT] = {
  23   { // BootMon
  24     ARM_VE_SMB_NOR0_BASE,
  25     SIZE_256KB * 255,
  26     SIZE_256KB,
  27     {0xE7223039, 0x5836, 0x41E1, 0xB5, 0x42, 0xD7, 0xEC, 0x73, 0x6C, 0x5E, 0x59}
  28   },
  29   { // BootMon non-volatile storage
  30     ARM_VE_SMB_NOR0_BASE + SIZE_256KB * 255,
  31     SIZE_64KB * 4,
  32     SIZE_64KB,
  33     {0x02118005, 0x9DA7, 0x443A, 0x92, 0xD5, 0x78, 0x1F, 0x02, 0x2A, 0xED, 0xBB}
  34   },
  35   { // UEFI
  36     ARM_VE_SMB_NOR1_BASE,
  37     SIZE_256KB * 255,
  38     SIZE_256KB,
  39     {0x1F15DA3C, 0x37FF, 0x4070, 0xB4, 0x71, 0xBB, 0x4A, 0xF1, 0x2A, 0x72, 0x4A}
  40   },
  41   { // UEFI Variable Services non-volatile storage
  42     ARM_VE_SMB_NOR1_BASE + SIZE_256KB * 255,
  43     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
  44     SIZE_64KB,
  45     {0xCC2CBF29, 0x1498, 0x4CDD, 0x81, 0x71, 0xF8, 0xB6, 0xB4, 0x1D, 0x09, 0x09}
  46   }
  47 };
  48
  49 EFI_STATUS
  50 NorFlashPlatformInitialization (
  51   VOID
  52   )
  53 {
  54   // Everything seems ok so far, so now we need to disable the platform-specific
  55   // flash write protection for Versatile Express
  56   if ((MmioRead32 (ARM_VE_SYS_FLASH) & 0x1) == 0) {
  57     // Writing to NOR FLASH is disabled, so enable it
  58     MmioWrite32 (ARM_VE_SYS_FLASH,1);
  59     DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: informational - Had to enable HSYS_FLASH flag.\n" ));
  60   }
  61
  62   return EFI_SUCCESS;
  63 }
  64
  65 EFI_STATUS
  66 NorFlashPlatformGetDevices (
  67   OUT NOR_FLASH_DESCRIPTION   **NorFlashDevices,
  68   OUT UINT32                  *Count
  69   )
  70 {
  71   if ((NorFlashDevices == NULL) || (Count == NULL)) {
  72     return EFI_INVALID_PARAMETER;
  73   }
  74
  75   *NorFlashDevices = mNorFlashDevices;
  76   *Count = NOR_FLASH_DEVICE_COUNT;
  77
  78   return EFI_SUCCESS;
  79 }