/** @file
  Identify Boot Medium Information

@copyright
  INTEL CONFIDENTIAL
  Copyright 2018 - 2019 Intel Corporation.

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  source code ("Material") are owned by Intel Corporation or its suppliers or
  licensors. Title to the Material remains with Intel Corporation or its suppliers
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  confidential information of Intel Corporation and its suppliers and licensors,
  and is protected by worldwide copyright and trade secret laws and treaty
  provisions. No part of the Material may be used, copied, reproduced, modified,
  published, uploaded, posted, transmitted, distributed, or disclosed in any way
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  No license under any patent, copyright, trade secret or other intellectual
  property right is granted to or conferred upon you by disclosure or delivery
  of the Materials, either expressly, by implication, inducement, estoppel or
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  express and approved by Intel in writing.

  Unless otherwise agreed by Intel in writing, you may not remove or alter
  this notice or any other notice embedded in Materials by Intel or
  Intel's suppliers or licensors in any way.

  This file contains a 'Sample Driver' and is licensed as such under the terms
  of your license agreement with Intel or your vendor. This file may be modified
  by the user, subject to the additional terms of the license agreement.

@par Specification Reference:
**/

#include "BootMediaInfo.h"

/**
  @param  ImageHandle  A handle for the image that is initializing this driver
  @param  SystemTable  A pointer to the EFI system table

  @retval EFI_SUCCESS             The entry point is executed successfully.
  @retval EFI_NOT_FOUND           The firmware boot media type could not be found.

**/
EFI_STATUS
EFIAPI
BootMediaDriverEntry (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS                Status;
  BOOT_DEVICE_SETUP         BootDeviceInfo;
  UINTN                     VariableSize;
  FW_BOOT_MEDIA_TYPE        FwBootMediaType;
  VariableSize = 0;
  Status = gRT->GetVariable (
                  BOOT_DEVICE_INFO_VARIABLE_NAME,
                  &gBootDeviceInfoGuid,
                  NULL,
                  &VariableSize,
                  &BootDeviceInfo
                  );
  if (Status == RETURN_BUFFER_TOO_SMALL) {
    DEBUG ((DEBUG_INFO, "FirmwareBootMediaInfo variable has already existed.\n"));
    return EFI_SUCCESS;
  }
  FwBootMediaType = FwBootMediaMax;
  Status = GetFirmwareBootMediaType (&FwBootMediaType);
  if (Status == EFI_SUCCESS) {
    switch (FwBootMediaType) {
      case FwBootMediaSpi:
        BootDeviceInfo.Version = BOOT_DEVICE_INFO_REVISION;
        BootDeviceInfo.BootDeviceType = FwBootMediaSpi;
        BootDeviceInfo.Partition = 0;
        DEBUG ((DEBUG_INFO, "FirmwareBootMediaLib: FwBootMediaType is SPI\n"));
        break;
      case FwBootMediaUfs:
        BootDeviceInfo.Version = BOOT_DEVICE_INFO_REVISION;
        BootDeviceInfo.BootDeviceType = FwBootMediaUfs;
        BootDeviceInfo.Partition = UFS_LUN_1;
        DEBUG ((DEBUG_INFO, "FirmwareBootMediaLib: FwBootMediaType is UFS\n"));
        break;
      default:
        DEBUG ((DEBUG_ERROR, "FirmwareBootMediaLib Error: The firmware boot media type could not be found\n"));
        return EFI_NOT_FOUND;
    }
  } else {
      DEBUG ((DEBUG_ERROR, "FirmwareBootMediaLib Error: Cannot Get Firmware Boot Media Type\n"));
      return Status;
  }

  VariableSize = sizeof (BootDeviceInfo);
  Status = gRT->SetVariable (
                  BOOT_DEVICE_INFO_VARIABLE_NAME,
                  &gBootDeviceInfoGuid,
                  EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
                  VariableSize,
                  &BootDeviceInfo
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  DEBUG ((DEBUG_INFO, "BootMediaInfo set variable successfully.\n"));
  return EFI_SUCCESS;
}