OvmfPkg/PlatformDxe/PlatformConfig.h

   1 /** @file
   2
   3   Utility functions for serializing (persistently storing) and deserializing
   4   OVMF's platform configuration.
   5
   6   Copyright (C) 2014, Red Hat, Inc.
   7
   8   This program and the accompanying materials are licensed and made available
   9   under the terms and conditions of the BSD License which accompanies this
  10   distribution. The full text of the license may be found at
  11   http://opensource.org/licenses/bsd-license.php
  12
  13   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
  14   WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  15
  16 **/
  17
  18 #ifndef _PLATFORM_CONFIG_H_
  19 #define _PLATFORM_CONFIG_H_
  20
  21 #include <Base.h>
  22
  23 //
  24 // This structure participates in driver configuration. It does not
  25 // (necessarily) reflect the wire format in the persistent store.
  26 //
  27 #pragma pack(1)
  28 typedef struct {
  29   //
  30   // preferred graphics console resolution when booting
  31   //
  32   UINT32 HorizontalResolution;
  33   UINT32 VerticalResolution;
  34 } PLATFORM_CONFIG;
  35 #pragma pack()
  36
  37 //
  38 // Please see the API documentation near the function definitions.
  39 //
  40 EFI_STATUS
  41 EFIAPI
  42 PlatformConfigSave (
  43   IN PLATFORM_CONFIG *PlatformConfig
  44   );
  45
  46 EFI_STATUS
  47 EFIAPI
  48 PlatformConfigLoad (
  49   OUT PLATFORM_CONFIG *PlatformConfig,
  50   OUT UINT64          *OptionalElements
  51   );
  52
  53 //
  54 // Feature flags for OptionalElements.
  55 //
  56 #define PLATFORM_CONFIG_F_GRAPHICS_RESOLUTION BIT0
  57 #define PLATFORM_CONFIG_F_DOWNGRADE           BIT63
  58
  59 #endif // _PLATFORM_CONFIG_H_