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   SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 #ifndef _PLATFORM_CONFIG_H_
  13 #define _PLATFORM_CONFIG_H_
  14
  15 #include <Base.h>
  16
  17 //
  18 // This structure participates in driver configuration. It does not
  19 // (necessarily) reflect the wire format in the persistent store.
  20 //
  21 #pragma pack(1)
  22 typedef struct {
  23   //
  24   // preferred graphics console resolution when booting
  25   //
  26   UINT32 HorizontalResolution;
  27   UINT32 VerticalResolution;
  28 } PLATFORM_CONFIG;
  29 #pragma pack()
  30
  31 //
  32 // Please see the API documentation near the function definitions.
  33 //
  34 EFI_STATUS
  35 EFIAPI
  36 PlatformConfigSave (
  37   IN PLATFORM_CONFIG *PlatformConfig
  38   );
  39
  40 EFI_STATUS
  41 EFIAPI
  42 PlatformConfigLoad (
  43   OUT PLATFORM_CONFIG *PlatformConfig,
  44   OUT UINT64          *OptionalElements
  45   );
  46
  47 //
  48 // Feature flags for OptionalElements.
  49 //
  50 #define PLATFORM_CONFIG_F_GRAPHICS_RESOLUTION BIT0
  51 #define PLATFORM_CONFIG_F_DOWNGRADE           BIT63
  52
  53 #endif // _PLATFORM_CONFIG_H_