system76-edk2/MdeModulePkg/Logo/Logo.c

/** @file
  Logo DXE Driver, install Edkii Platform Logo protocol.

Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/
#include <Uefi.h>
#include <Protocol/HiiDatabase.h>
#include <Protocol/GraphicsOutput.h>
#include <Protocol/HiiImageEx.h>
#include <Protocol/PlatformLogo.h>
#include <Protocol/HiiPackageList.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>

typedef struct {
  EFI_IMAGE_ID                          ImageId;
  EDKII_PLATFORM_LOGO_DISPLAY_ATTRIBUTE Attribute;
  INTN                                  OffsetX;
  INTN                                  OffsetY;
} LOGO_ENTRY;

EFI_HII_IMAGE_EX_PROTOCOL *mHiiImageEx;
EFI_HII_HANDLE            mHiiHandle;
LOGO_ENTRY                mLogos[] = {
  {
    IMAGE_TOKEN (IMG_LOGO),
    EdkiiPlatformLogoDisplayAttributeCenter,
    0,
    0
  }
};

/**
  Load a platform logo image and return its data and attributes.

  @param This              The pointer to this protocol instance.
  @param Instance          The visible image instance is found.
  @param Image             Points to the image.
  @param Attribute         The display attributes of the image returned.
  @param OffsetX           The X offset of the image regarding the Attribute.
  @param OffsetY           The Y offset of the image regarding the Attribute.

  @retval EFI_SUCCESS      The image was fetched successfully.
  @retval EFI_NOT_FOUND    The specified image could not be found.
**/
EFI_STATUS
EFIAPI
GetImage (
  IN     EDKII_PLATFORM_LOGO_PROTOCOL          *This,
  IN OUT UINT32                                *Instance,
     OUT EFI_IMAGE_INPUT                       *Image,
     OUT EDKII_PLATFORM_LOGO_DISPLAY_ATTRIBUTE *Attribute,
     OUT INTN                                  *OffsetX,
     OUT INTN                                  *OffsetY
  )
{
  UINT32 Current;
  if (Instance == NULL || Image == NULL ||
      Attribute == NULL || OffsetX == NULL || OffsetY == NULL) {
    return EFI_INVALID_PARAMETER;
  }

  Current = *Instance;
  if (Current >= ARRAY_SIZE (mLogos)) {
    return EFI_NOT_FOUND;
  }

  (*Instance)++;
  *Attribute = mLogos[Current].Attribute;
  *OffsetX   = mLogos[Current].OffsetX;
  *OffsetY   = mLogos[Current].OffsetY;
  return mHiiImageEx->GetImageEx (mHiiImageEx, mHiiHandle, mLogos[Current].ImageId, Image);
}

EDKII_PLATFORM_LOGO_PROTOCOL mPlatformLogo = {
  GetImage
};

/**
  Entrypoint of this module.

  This function is the entrypoint of this module. It installs the Edkii
  Platform Logo protocol.

  @param  ImageHandle       The firmware allocated handle for the EFI image.
  @param  SystemTable       A pointer to the EFI System Table.

  @retval EFI_SUCCESS       The entry point is executed successfully.

**/
EFI_STATUS
EFIAPI
InitializeLogo (
  IN EFI_HANDLE               ImageHandle,
  IN EFI_SYSTEM_TABLE         *SystemTable
  )
{
  EFI_STATUS                  Status;
  EFI_HII_PACKAGE_LIST_HEADER *PackageList;
  EFI_HII_DATABASE_PROTOCOL   *HiiDatabase;
  EFI_HANDLE                  Handle;

  Status = gBS->LocateProtocol (
                  &gEfiHiiDatabaseProtocolGuid,
                  NULL,
                  (VOID **) &HiiDatabase
                  );
  ASSERT_EFI_ERROR (Status);

  Status = gBS->LocateProtocol (
                  &gEfiHiiImageExProtocolGuid,
                  NULL,
                  (VOID **) &mHiiImageEx
                  );
  ASSERT_EFI_ERROR (Status);

  //
  // Retrieve HII package list from ImageHandle
  //
  Status = gBS->OpenProtocol (
                  ImageHandle,
                  &gEfiHiiPackageListProtocolGuid,
                  (VOID **) &PackageList,
                  ImageHandle,
                  NULL,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
    DEBUG ((DEBUG_ERROR, "HII Image Package with logo not found in PE/COFF resource section\n"));
    return Status;
  }

  //
  // Publish HII package list to HII Database.
  //
  Status = HiiDatabase->NewPackageList (
                          HiiDatabase,
                          PackageList,
                          NULL,
                          &mHiiHandle
                          );
  if (!EFI_ERROR (Status)) {
    Handle = NULL;
    Status = gBS->InstallMultipleProtocolInterfaces (
                    &Handle,
                    &gEdkiiPlatformLogoProtocolGuid, &mPlatformLogo,
                    NULL
                    );
  }
  return Status;
}