--- /dev/null
+/** @file
+ Graphics Output Protocol from the UEFI 2.0 specification.
+
+ Abstraction of a very simple graphics device.
+
+ Copyright (c) 2006 - 2012, 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.
+
+**/
+
+#ifndef __GRAPHICS_OUTPUT_H__
+#define __GRAPHICS_OUTPUT_H__
+
+FILE_LICENCE ( BSD3 );
+
+#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
+ { \
+ 0x9042a9de, 0x23dc, 0x4a38, {0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a } \
+ }
+
+typedef struct _EFI_GRAPHICS_OUTPUT_PROTOCOL EFI_GRAPHICS_OUTPUT_PROTOCOL;
+
+typedef struct {
+ UINT32 RedMask;
+ UINT32 GreenMask;
+ UINT32 BlueMask;
+ UINT32 ReservedMask;
+} EFI_PIXEL_BITMASK;
+
+typedef enum {
+ ///
+ /// A pixel is 32-bits and byte zero represents red, byte one represents green,
+ /// byte two represents blue, and byte three is reserved. This is the definition
+ /// for the physical frame buffer. The byte values for the red, green, and blue
+ /// components represent the color intensity. This color intensity value range
+ /// from a minimum intensity of 0 to maximum intensity of 255.
+ ///
+ PixelRedGreenBlueReserved8BitPerColor,
+ ///
+ /// A pixel is 32-bits and byte zero represents blue, byte one represents green,
+ /// byte two represents red, and byte three is reserved. This is the definition
+ /// for the physical frame buffer. The byte values for the red, green, and blue
+ /// components represent the color intensity. This color intensity value range
+ /// from a minimum intensity of 0 to maximum intensity of 255.
+ ///
+ PixelBlueGreenRedReserved8BitPerColor,
+ ///
+ /// The Pixel definition of the physical frame buffer.
+ ///
+ PixelBitMask,
+ ///
+ /// This mode does not support a physical frame buffer.
+ ///
+ PixelBltOnly,
+ ///
+ /// Valid EFI_GRAPHICS_PIXEL_FORMAT enum values are less than this value.
+ ///
+ PixelFormatMax
+} EFI_GRAPHICS_PIXEL_FORMAT;
+
+typedef struct {
+ ///
+ /// The version of this data structure. A value of zero represents the
+ /// EFI_GRAPHICS_OUTPUT_MODE_INFORMATION structure as defined in this specification.
+ ///
+ UINT32 Version;
+ ///
+ /// The size of video screen in pixels in the X dimension.
+ ///
+ UINT32 HorizontalResolution;
+ ///
+ /// The size of video screen in pixels in the Y dimension.
+ ///
+ UINT32 VerticalResolution;
+ ///
+ /// Enumeration that defines the physical format of the pixel. A value of PixelBltOnly
+ /// implies that a linear frame buffer is not available for this mode.
+ ///
+ EFI_GRAPHICS_PIXEL_FORMAT PixelFormat;
+ ///
+ /// This bit-mask is only valid if PixelFormat is set to PixelPixelBitMask.
+ /// A bit being set defines what bits are used for what purpose such as Red, Green, Blue, or Reserved.
+ ///
+ EFI_PIXEL_BITMASK PixelInformation;
+ ///
+ /// Defines the number of pixel elements per video memory line.
+ ///
+ UINT32 PixelsPerScanLine;
+} EFI_GRAPHICS_OUTPUT_MODE_INFORMATION;
+
+/**
+ Returns information for an available graphics mode that the graphics device
+ and the set of active video output devices supports.
+
+ @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
+ @param ModeNumber The mode number to return information on.
+ @param SizeOfInfo A pointer to the size, in bytes, of the Info buffer.
+ @param Info A pointer to callee allocated buffer that returns information about ModeNumber.
+
+ @retval EFI_SUCCESS Valid mode information was returned.
+ @retval EFI_DEVICE_ERROR A hardware error occurred trying to retrieve the video mode.
+ @retval EFI_INVALID_PARAMETER ModeNumber is not valid.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE)(
+ IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
+ IN UINT32 ModeNumber,
+ OUT UINTN *SizeOfInfo,
+ OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info
+ );
+
+/**
+ Set the video device into the specified mode and clears the visible portions of
+ the output display to black.
+
+ @param This The EFI_GRAPHICS_OUTPUT_PROTOCOL instance.
+ @param ModeNumber Abstraction that defines the current video mode.
+
+ @retval EFI_SUCCESS The graphics mode specified by ModeNumber was selected.
+ @retval EFI_DEVICE_ERROR The device had an error and could not complete the request.
+ @retval EFI_UNSUPPORTED ModeNumber is not supported by this device.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE)(
+ IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
+ IN UINT32 ModeNumber
+ );
+
+typedef struct {
+ UINT8 Blue;
+ UINT8 Green;
+ UINT8 Red;
+ UINT8 Reserved;
+} EFI_GRAPHICS_OUTPUT_BLT_PIXEL;
+
+typedef union {
+ EFI_GRAPHICS_OUTPUT_BLT_PIXEL Pixel;
+ UINT32 Raw;
+} EFI_GRAPHICS_OUTPUT_BLT_PIXEL_UNION;
+
+///
+/// actions for BltOperations
+///
+typedef enum {
+ ///
+ /// Write data from the BltBuffer pixel (0, 0)
+ /// directly to every pixel of the video display rectangle
+ /// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height).
+ /// Only one pixel will be used from the BltBuffer. Delta is NOT used.
+ ///
+ EfiBltVideoFill,
+
+ ///
+ /// Read data from the video display rectangle
+ /// (SourceX, SourceY) (SourceX + Width, SourceY + Height) and place it in
+ /// the BltBuffer rectangle (DestinationX, DestinationY )
+ /// (DestinationX + Width, DestinationY + Height). If DestinationX or
+ /// DestinationY is not zero then Delta must be set to the length in bytes
+ /// of a row in the BltBuffer.
+ ///
+ EfiBltVideoToBltBuffer,
+
+ ///
+ /// Write data from the BltBuffer rectangle
+ /// (SourceX, SourceY) (SourceX + Width, SourceY + Height) directly to the
+ /// video display rectangle (DestinationX, DestinationY)
+ /// (DestinationX + Width, DestinationY + Height). If SourceX or SourceY is
+ /// not zero then Delta must be set to the length in bytes of a row in the
+ /// BltBuffer.
+ ///
+ EfiBltBufferToVideo,
+
+ ///
+ /// Copy from the video display rectangle (SourceX, SourceY)
+ /// (SourceX + Width, SourceY + Height) to the video display rectangle
+ /// (DestinationX, DestinationY) (DestinationX + Width, DestinationY + Height).
+ /// The BltBuffer and Delta are not used in this mode.
+ ///
+ EfiBltVideoToVideo,
+
+ EfiGraphicsOutputBltOperationMax
+} EFI_GRAPHICS_OUTPUT_BLT_OPERATION;
+
+/**
+ Blt a rectangle of pixels on the graphics screen. Blt stands for BLock Transfer.
+
+ @param This Protocol instance pointer.
+ @param BltBuffer The data to transfer to the graphics screen.
+ Size is at least Width*Height*sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL).
+ @param BltOperation The operation to perform when copying BltBuffer on to the graphics screen.
+ @param SourceX The X coordinate of source for the BltOperation.
+ @param SourceY The Y coordinate of source for the BltOperation.
+ @param DestinationX The X coordinate of destination for the BltOperation.
+ @param DestinationY The Y coordinate of destination for the BltOperation.
+ @param Width The width of a rectangle in the blt rectangle in pixels.
+ @param Height The height of a rectangle in the blt rectangle in pixels.
+ @param Delta Not used for EfiBltVideoFill or the EfiBltVideoToVideo operation.
+ If a Delta of zero is used, the entire BltBuffer is being operated on.
+ If a subrectangle of the BltBuffer is being used then Delta
+ represents the number of bytes in a row of the BltBuffer.
+
+ @retval EFI_SUCCESS BltBuffer was drawn to the graphics screen.
+ @retval EFI_INVALID_PARAMETER BltOperation is not valid.
+ @retval EFI_DEVICE_ERROR The device had an error and could not complete the request.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT)(
+ IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,
+ IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL
+ IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,
+ IN UINTN SourceX,
+ IN UINTN SourceY,
+ IN UINTN DestinationX,
+ IN UINTN DestinationY,
+ IN UINTN Width,
+ IN UINTN Height,
+ IN UINTN Delta OPTIONAL
+ );
+
+typedef struct {
+ ///
+ /// The number of modes supported by QueryMode() and SetMode().
+ ///
+ UINT32 MaxMode;
+ ///
+ /// Current Mode of the graphics device. Valid mode numbers are 0 to MaxMode -1.
+ ///
+ UINT32 Mode;
+ ///
+ /// Pointer to read-only EFI_GRAPHICS_OUTPUT_MODE_INFORMATION data.
+ ///
+ EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info;
+ ///
+ /// Size of Info structure in bytes.
+ ///
+ UINTN SizeOfInfo;
+ ///
+ /// Base address of graphics linear frame buffer.
+ /// Offset zero in FrameBufferBase represents the upper left pixel of the display.
+ ///
+ EFI_PHYSICAL_ADDRESS FrameBufferBase;
+ ///
+ /// Amount of frame buffer needed to support the active mode as defined by
+ /// PixelsPerScanLine xVerticalResolution x PixelElementSize.
+ ///
+ UINTN FrameBufferSize;
+} EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE;
+
+///
+/// Provides a basic abstraction to set video modes and copy pixels to and from
+/// the graphics controller's frame buffer. The linear address of the hardware
+/// frame buffer is also exposed so software can write directly to the video hardware.
+///
+struct _EFI_GRAPHICS_OUTPUT_PROTOCOL {
+ EFI_GRAPHICS_OUTPUT_PROTOCOL_QUERY_MODE QueryMode;
+ EFI_GRAPHICS_OUTPUT_PROTOCOL_SET_MODE SetMode;
+ EFI_GRAPHICS_OUTPUT_PROTOCOL_BLT Blt;
+ ///
+ /// Pointer to EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE data.
+ ///
+ EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *Mode;
+};
+
+extern EFI_GUID gEfiGraphicsOutputProtocolGuid;
+
+#endif
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