text: /** @file
  
   Copyright (c) 2011-2014, ARM Ltd. All rights reserved.<BR>
  
   SPDX-License-Identifier: BSD-2-Clause-Patent
  
   **/
  
  #include <PiDxe.h>
  #include <Library/DebugLib.h>
  #include <Library/IoLib.h>
  #include <Library/NorFlashPlatformLib.h>
  #include <ArmPlatform.h>
  
  NOR_FLASH_DESCRIPTION mNorFlashDevices[] = {
    {
      ARM_VE_SMB_NOR0_BASE,
      ARM_VE_SMB_NOR0_BASE,
      SIZE_256KB * 255,
      SIZE_256KB,
    },
    {
      ARM_VE_SMB_NOR0_BASE,
      ARM_VE_SMB_NOR0_BASE + SIZE_256KB * 255,
      SIZE_64KB * 4,
      SIZE_64KB,
    },
  };
  
  EFI_STATUS
  NorFlashPlatformInitialization (
    VOID
    )
  {
    // Everything seems ok so far, so now we need to disable the platform-specific
    // flash write protection for Versatile Express
    if ((MmioRead32 (ARM_VE_SYS_FLASH) & 0x1) == 0) {
      // Writing to NOR FLASH is disabled, so enable it
      MmioWrite32 (ARM_VE_SYS_FLASH, 1);
      DEBUG((DEBUG_BLKIO, "NorFlashPlatformInitialization: informational - Had to enable HSYS_FLASH flag.\n" ));
    }
  
    return EFI_SUCCESS;
  }
  
  EFI_STATUS
  NorFlashPlatformGetDevices (
    OUT NOR_FLASH_DESCRIPTION   **NorFlashDevices,
    OUT UINT32                  *Count
    )
  {
    if ((NorFlashDevices == NULL) || (Count == NULL)) {
      return EFI_INVALID_PARAMETER;
    }
  
    *NorFlashDevices = mNorFlashDevices;
    *Count = sizeof (mNorFlashDevices) / sizeof (NOR_FLASH_DESCRIPTION);
  
    return EFI_SUCCESS;
  }
  