[mirror_edk2.git] / DuetPkg / BiosVideoThunkDxe / BiosVideo.h

/** @file\r
\r
Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
**/\r
\r
#ifndef _BIOS_GRAPHICS_OUTPUT_H\r
#define _BIOS_GRAPHICS_OUTPUT_H\r
\r
#include <Uefi.h>\r
\r
//\r
// Driver Consumed Protocol Prototypes\r
//\r
#include <Protocol/DevicePath.h>\r
#include <Protocol/PciIo.h>\r
#include <Protocol/DriverBinding.h>\r
#include <Protocol/ComponentName.h>\r
#include <Protocol/ComponentName2.h>\r
#include <Protocol/UgaDraw.h>\r
#include <Protocol/VgaMiniPort.h>\r
#include <Protocol/Legacy8259.h>\r
#include <Protocol/EdidActive.h>\r
#include <Protocol/EdidDiscovered.h>\r
#include <Protocol/DevicePath.h>\r
\r
#include <Library/UefiLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/DevicePathLib.h>\r
\r
#include <IndustryStandard/Pci.h>\r
\r
#include "VesaBiosExtensions.h"\r
\r
//\r
// Packed format support: The number of bits reserved for each of the colors and the actual\r
// position of RGB in the frame buffer is specified in the VBE Mode information\r
//\r
typedef struct {\r
  UINT8 Position; // Position of the color\r
  UINT8 Mask;     // The number of bits expressed as a mask\r
} BIOS_VIDEO_COLOR_PLACEMENT;\r
\r
//\r
// BIOS Graphics Output Graphical Mode Data\r
//\r
typedef struct {\r
  UINT16                      VbeModeNumber;\r
  UINT16                      BytesPerScanLine;\r
  VOID                        *LinearFrameBuffer;\r
  UINTN                       FrameBufferSize;\r
  UINT32                      HorizontalResolution;\r
  UINT32                      VerticalResolution;\r
  UINT32                      RefreshRate;\r
  UINT32                      BitsPerPixel;\r
  BIOS_VIDEO_COLOR_PLACEMENT  Red;\r
  BIOS_VIDEO_COLOR_PLACEMENT  Green;\r
  BIOS_VIDEO_COLOR_PLACEMENT  Blue;\r
  BIOS_VIDEO_COLOR_PLACEMENT  Reserved;\r
  EFI_GRAPHICS_PIXEL_FORMAT   PixelFormat;\r
  EFI_PIXEL_BITMASK           PixelBitMask;\r
} BIOS_VIDEO_MODE_DATA;\r
\r
//\r
// BIOS video child handle private data Structure\r
//\r
#define BIOS_VIDEO_DEV_SIGNATURE    SIGNATURE_32 ('B', 'V', 'M', 'p')\r
\r
typedef struct {\r
  UINTN                                       Signature;\r
  EFI_HANDLE                                  Handle;\r
\r
  //\r
  // Consumed Protocols inherited from parent controller.\r
  //\r
  EFI_PCI_IO_PROTOCOL                         *PciIo;\r
  EFI_LEGACY_8259_PROTOCOL                    *Legacy8259;\r
  THUNK_CONTEXT                               *ThunkContext;\r
  \r
  //\r
  // Produced Protocols\r
  //\r
  EFI_GRAPHICS_OUTPUT_PROTOCOL                GraphicsOutput;\r
  EFI_EDID_DISCOVERED_PROTOCOL                EdidDiscovered;\r
  EFI_EDID_ACTIVE_PROTOCOL                    EdidActive;\r
  EFI_VGA_MINI_PORT_PROTOCOL                  VgaMiniPort;\r
\r
  //\r
  // General fields\r
  //\r
  BOOLEAN                                     VgaCompatible;\r
  BOOLEAN                                     ProduceGraphicsOutput;\r
\r
  //\r
  // Graphics Output Protocol related fields\r
  //\r
  BOOLEAN                                     HardwareNeedsStarting;\r
  BIOS_VIDEO_MODE_DATA                        *ModeData;\r
  UINT8                                       *LineBuffer;\r
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL               *VbeFrameBuffer;\r
  UINT8                                       *VgaFrameBuffer;\r
\r
  //\r
  // VESA Bios Extensions related fields\r
  //\r
  UINTN                                       NumberOfPagesBelow1MB;    // Number of 4KB pages in PagesBelow1MB\r
  EFI_PHYSICAL_ADDRESS                        PagesBelow1MB;            // Buffer for all VBE Information Blocks\r
  VESA_BIOS_EXTENSIONS_INFORMATION_BLOCK      *VbeInformationBlock;     // 0x200 bytes.  Must be allocated below 1MB\r
  VESA_BIOS_EXTENSIONS_MODE_INFORMATION_BLOCK *VbeModeInformationBlock; // 0x100 bytes.  Must be allocated below 1MB\r
  VESA_BIOS_EXTENSIONS_EDID_DATA_BLOCK        *VbeEdidDataBlock;        // 0x80  bytes.  Must be allocated below 1MB\r
  VESA_BIOS_EXTENSIONS_CRTC_INFORMATION_BLOCK *VbeCrtcInformationBlock; // 59 bytes.  Must be allocated below 1MB\r
  UINTN                                       VbeSaveRestorePages;      // Number of 4KB pages in VbeSaveRestoreBuffer\r
  EFI_PHYSICAL_ADDRESS                        VbeSaveRestoreBuffer;     // Must be allocated below 1MB\r
  //\r
  // Status code\r
  //\r
  EFI_DEVICE_PATH_PROTOCOL                    *DevicePath;\r
} BIOS_VIDEO_DEV;\r
\r
#define BIOS_VIDEO_DEV_FROM_PCI_IO_THIS(a)      CR (a, BIOS_VIDEO_DEV, PciIo, BIOS_VIDEO_DEV_SIGNATURE)\r
#define BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS(a)      CR (a, BIOS_VIDEO_DEV, GraphicsOutput, BIOS_VIDEO_DEV_SIGNATURE)\r
#define BIOS_VIDEO_DEV_FROM_VGA_MINI_PORT_THIS(a) CR (a, BIOS_VIDEO_DEV, VgaMiniPort, BIOS_VIDEO_DEV_SIGNATURE)\r
\r
#define GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER  0xffff\r
\r
#define EFI_SEGMENT(_Adr)     (UINT16) ((UINT16) (((UINTN) (_Adr)) >> 4) & 0xf000)\r
#define EFI_OFFSET(_Adr)      (UINT16) (((UINT16) ((UINTN) (_Adr))) & 0xffff)\r
\r
//\r
// Global Variables\r
//\r
extern EFI_DRIVER_BINDING_PROTOCOL   gBiosVideoDriverBinding;\r
extern EFI_COMPONENT_NAME_PROTOCOL   gBiosVideoComponentName;\r
extern EFI_COMPONENT_NAME2_PROTOCOL  gBiosVideoComponentName2;\r
\r
//\r
// Driver Binding Protocol functions\r
//\r
/**\r
  Test to see if Bios Video could be supported on the Controller.\r
\r
  @param This                  Pointer to driver binding protocol\r
  @param Controller            Controller handle to connect\r
  @param RemainingDevicePath   A pointer to the remaining portion of a device path\r
\r
  @retval EFI_SUCCESS         This driver supports this device.\r
  @retval other               This driver does not support this device.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BiosVideoDriverBindingSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath\r
  )\r
;\r
\r
/**\r
  Install Graphics Output Protocol onto VGA device handles\r
\r
  @param This                   Pointer to driver binding protocol\r
  @param Controller             Controller handle to connect\r
  @param RemainingDevicePath    A pointer to the remaining portion of a device path\r
\r
  @return EFI_STATUS\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BiosVideoDriverBindingStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath\r
  )\r
;\r
\r
/**\r
  Stop this driver on Controller \r
\r
  @param  This              Protocol instance pointer.\r
  @param  Controller        Handle of device to stop driver on\r
  @param  NumberOfChildren  Number of Handles in ChildHandleBuffer. If number of\r
                            children is zero stop the entire bus driver.\r
  @param  ChildHandleBuffer List of Child Handles to Stop.\r
\r
  @retval EFI_SUCCESS       This driver is removed Controller.\r
  @retval other             This driver was not removed from this device.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BiosVideoDriverBindingStop (\r
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN  EFI_HANDLE                   Controller,\r
  IN  UINTN                        NumberOfChildren,\r
  IN  EFI_HANDLE                   *ChildHandleBuffer\r
  )\r
;\r
\r
//\r
// Private worker functions\r
//\r
/**\r
  Check for VBE device\r
\r
  @param BiosVideoPrivate - Pointer to BIOS_VIDEO_DEV structure\r
\r
  @retval EFI_SUCCESS VBE device found\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BiosVideoCheckForVbe (\r
  IN OUT BIOS_VIDEO_DEV  *BiosVideoPrivate\r
  )\r
;\r
\r
/**\r
  Check for VGA device\r
\r
  @param BiosVideoPrivate - Pointer to BIOS_VIDEO_DEV structure\r
\r
  @retval EFI_SUCCESS  Standard VGA device found\r
**/\r
\r
EFI_STATUS\r
EFIAPI\r
BiosVideoCheckForVga (\r
  BIOS_VIDEO_DEV  *BiosVideoPrivate\r
  )\r
;\r
\r
/**\r
  Collect the resource from destroyed bios video device.\r
\r
  @param BiosVideoPrivate   Video child device private data structure\r
\r
**/\r
VOID\r
BiosVideoDeviceReleaseResource (\r
  BIOS_VIDEO_DEV  *BiosVideoChildPrivate\r
  )\r
;\r
\r
//\r
// BIOS Graphics Output Protocol functions\r
//\r
/**\r
\r
  Graphics Output protocol interface to get video mode\r
\r
\r
  @param This            - Protocol instance pointer.\r
  @param ModeNumber      - The mode number to return information on.\r
  @param SizeOfInfo      - A pointer to the size, in bytes, of the Info buffer.\r
  @param Info            - Caller allocated buffer that returns information about ModeNumber.\r
\r
  @return EFI_SUCCESS           - Mode information returned.\r
          EFI_DEVICE_ERROR      - A hardware error occurred trying to retrieve the video mode.\r
          EFI_NOT_STARTED       - Video display is not initialized. Call SetMode ()\r
          EFI_INVALID_PARAMETER - One of the input args was NULL.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BiosVideoGraphicsOutputQueryMode (\r
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL          *This,\r
  IN  UINT32                                ModeNumber,\r
  OUT UINTN                                 *SizeOfInfo,\r
  OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  **Info\r
  )\r
;\r
\r
/**\r
\r
  Graphics Output protocol interface to set video mode\r
\r
\r
  @param This            - Protocol instance pointer.\r
  @param ModeNumber      - The mode number to be set.\r
\r
  @return EFI_SUCCESS      - Graphics mode was changed.\r
          EFI_DEVICE_ERROR - The device had an error and could not complete the request.\r
          EFI_UNSUPPORTED  - ModeNumber is not supported by this device.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BiosVideoGraphicsOutputSetMode (\r
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL * This,\r
  IN  UINT32                       ModeNumber\r
  )\r
;\r
\r
/**\r
\r
  Graphics Output protocol instance to block transfer for VBE device\r
\r
\r
  @param This            - Pointer to Graphics Output protocol instance\r
  @param BltBuffer       - The data to transfer to screen\r
  @param BltOperation    - The operation to perform\r
  @param SourceX         - The X coordinate of the source for BltOperation\r
  @param SourceY         - The Y coordinate of the source for BltOperation\r
  @param DestinationX    - The X coordinate of the destination for BltOperation\r
  @param DestinationY    - The Y coordinate of the destination for BltOperation\r
  @param Width           - The width of a rectangle in the blt rectangle in pixels\r
  @param Height          - The height of a rectangle in the blt rectangle in pixels\r
  @param Delta           - Not used for EfiBltVideoFill and EfiBltVideoToVideo operation.\r
                         If a Delta of 0 is used, the entire BltBuffer will be operated on.\r
                         If a subrectangle of the BltBuffer is used, then Delta represents\r
                         the number of bytes in a row of the BltBuffer.\r
\r
  @return EFI_INVALID_PARAMETER - Invalid parameter passed in\r
          EFI_SUCCESS - Blt operation success\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BiosVideoGraphicsOutputVbeBlt (\r
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL       *This,\r
  IN  EFI_GRAPHICS_OUTPUT_BLT_PIXEL      *BltBuffer, OPTIONAL\r
  IN  EFI_GRAPHICS_OUTPUT_BLT_OPERATION  BltOperation,\r
  IN  UINTN                              SourceX,\r
  IN  UINTN                              SourceY,\r
  IN  UINTN                              DestinationX,\r
  IN  UINTN                              DestinationY,\r
  IN  UINTN                              Width,\r
  IN  UINTN                              Height,\r
  IN  UINTN                              Delta\r
  )\r
;\r
\r
/**\r
  Grahpics Output protocol instance to block transfer for VGA device\r
\r
  @param This            Pointer to Grahpics Output protocol instance\r
  @param BltBuffer       The data to transfer to screen\r
  @param BltOperation    The operation to perform\r
  @param SourceX         The X coordinate of the source for BltOperation\r
  @param SourceY         The Y coordinate of the source for BltOperation\r
  @param DestinationX    The X coordinate of the destination for BltOperation\r
  @param DestinationY    The Y coordinate of the destination for BltOperation\r
  @param Width           The width of a rectangle in the blt rectangle in pixels\r
  @param Height          The height of a rectangle in the blt rectangle in pixels\r
  @param Delta           Not used for EfiBltVideoFill and EfiBltVideoToVideo operation.\r
                         If a Delta of 0 is used, the entire BltBuffer will be operated on.\r
                         If a subrectangle of the BltBuffer is used, then Delta represents\r
                         the number of bytes in a row of the BltBuffer.\r
\r
  @retval EFI_INVALID_PARAMETER Invalid parameter passed in\r
  @retval EFI_SUCCESS           Blt operation success\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BiosVideoGraphicsOutputVgaBlt (\r
  IN  EFI_GRAPHICS_OUTPUT_PROTOCOL       *This,\r
  IN  EFI_GRAPHICS_OUTPUT_BLT_PIXEL      *BltBuffer, OPTIONAL\r
  IN  EFI_GRAPHICS_OUTPUT_BLT_OPERATION  BltOperation,\r
  IN  UINTN                              SourceX,\r
  IN  UINTN                              SourceY,\r
  IN  UINTN                              DestinationX,\r
  IN  UINTN                              DestinationY,\r
  IN  UINTN                              Width,\r
  IN  UINTN                              Height,\r
  IN  UINTN                              Delta\r
  )\r
;\r
\r
//\r
// BIOS VGA Mini Port Protocol functions\r
//\r
/**\r
  VgaMiniPort protocol interface to set mode\r
\r
  @param This             Pointer to VgaMiniPort protocol instance\r
  @param ModeNumber       The index of the mode\r
\r
  @retval EFI_UNSUPPORTED The requested mode is not supported\r
  @retval EFI_SUCCESS     The requested mode is set successfully\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
BiosVideoVgaMiniPortSetMode (\r
  IN  EFI_VGA_MINI_PORT_PROTOCOL  *This,\r
  IN  UINTN                       ModeNumber\r
  )\r
;\r
\r
/**\r
  Judge whether this device is VGA device.\r
\r
  @param PciIo      Parent PciIo protocol instance pointer\r
\r
  @retval TRUE  Is vga device\r
  @retval FALSE Is no vga device\r
**/\r
BOOLEAN\r
BiosVideoIsVga (\r
  IN  EFI_PCI_IO_PROTOCOL       *PciIo\r
  )\r
;\r
\r
\r
//\r
// Standard VGA Definitions\r
//\r
#define VGA_HORIZONTAL_RESOLUTION                         640\r
#define VGA_VERTICAL_RESOLUTION                           480\r
#define VGA_NUMBER_OF_BIT_PLANES                          4\r
#define VGA_PIXELS_PER_BYTE                               8\r
#define VGA_BYTES_PER_SCAN_LINE                           (VGA_HORIZONTAL_RESOLUTION / VGA_PIXELS_PER_BYTE)\r
#define VGA_BYTES_PER_BIT_PLANE                           (VGA_VERTICAL_RESOLUTION * VGA_BYTES_PER_SCAN_LINE)\r
\r
#define VGA_GRAPHICS_CONTROLLER_ADDRESS_REGISTER          0x3ce\r
#define VGA_GRAPHICS_CONTROLLER_DATA_REGISTER             0x3cf\r
\r
#define VGA_GRAPHICS_CONTROLLER_SET_RESET_REGISTER        0x00\r
\r
#define VGA_GRAPHICS_CONTROLLER_ENABLE_SET_RESET_REGISTER 0x01\r
\r
#define VGA_GRAPHICS_CONTROLLER_COLOR_COMPARE_REGISTER    0x02\r
\r
#define VGA_GRAPHICS_CONTROLLER_DATA_ROTATE_REGISTER      0x03\r
#define VGA_GRAPHICS_CONTROLLER_FUNCTION_REPLACE          0x00\r
#define VGA_GRAPHICS_CONTROLLER_FUNCTION_AND              0x08\r
#define VGA_GRAPHICS_CONTROLLER_FUNCTION_OR               0x10\r
#define VGA_GRAPHICS_CONTROLLER_FUNCTION_XOR              0x18\r
\r
#define VGA_GRAPHICS_CONTROLLER_READ_MAP_SELECT_REGISTER  0x04\r
\r
#define VGA_GRAPHICS_CONTROLLER_MODE_REGISTER             0x05\r
#define VGA_GRAPHICS_CONTROLLER_READ_MODE_0               0x00\r
#define VGA_GRAPHICS_CONTROLLER_READ_MODE_1               0x08\r
#define VGA_GRAPHICS_CONTROLLER_WRITE_MODE_0              0x00\r
#define VGA_GRAPHICS_CONTROLLER_WRITE_MODE_1              0x01\r
#define VGA_GRAPHICS_CONTROLLER_WRITE_MODE_2              0x02\r
#define VGA_GRAPHICS_CONTROLLER_WRITE_MODE_3              0x03\r
\r
#define VGA_GRAPHICS_CONTROLLER_MISCELLANEOUS_REGISTER    0x06\r
\r
#define VGA_GRAPHICS_CONTROLLER_COLOR_DONT_CARE_REGISTER  0x07\r
\r
#define VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER         0x08\r
\r
/**\r
  Initialize legacy environment for BIOS INI caller.\r
  \r
  @param ThunkContext   the instance pointer of THUNK_CONTEXT\r
**/\r
VOID\r
InitializeBiosIntCaller (\r
  THUNK_CONTEXT     *ThunkContext\r
  );\r
  \r
/**\r
   Initialize interrupt redirection code and entries, because\r
   IDT Vectors 0x68-0x6f must be redirected to IDT Vectors 0x08-0x0f.\r
   Or the interrupt will lost when we do thunk.\r
   NOTE: We do not reset 8259 vector base, because it will cause pending\r
   interrupt lost.\r
   \r
   @param Legacy8259  Instance pointer for EFI_LEGACY_8259_PROTOCOL.\r
   \r
**/  \r
VOID\r
InitializeInterruptRedirection (\r
  IN  EFI_LEGACY_8259_PROTOCOL  *Legacy8259\r
  );\r
  \r
/**\r
  Thunk to 16-bit real mode and execute a software interrupt with a vector \r
  of BiosInt. Regs will contain the 16-bit register context on entry and \r
  exit.\r
  \r
  @param  This    Protocol instance pointer.\r
  @param  BiosInt Processor interrupt vector to invoke\r
  @param  Reg     Register contexted passed into (and returned) from thunk to 16-bit mode\r
  \r
  @retval TRUE   Thunk completed, and there were no BIOS errors in the target code.\r
                 See Regs for status.\r
  @retval FALSE  There was a BIOS erro in the target code.  \r
**/  \r
BOOLEAN\r
EFIAPI\r
LegacyBiosInt86 (\r
  IN  BIOS_VIDEO_DEV                 *BiosDev,\r
  IN  UINT8                           BiosInt,\r
  IN  IA32_REGISTER_SET           *Regs\r
  );    \r
  \r
#endif\r
Commit	Line	Data
f1294e4a	1	/** @file\r
7da78b1f	2	\r
b1f700a8 HT	3	Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>\r
b1f700a8 HT	4	This program and the accompanying materials \r
7da78b1f	5	are licensed and made available under the terms and conditions of the BSD License \r
	6	which accompanies this distribution. The full text of the license may be found at \r
	7	http://opensource.org/licenses/bsd-license.php \r
	8	\r
	9	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	10	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	11	\r
f1294e4a	12	**/\r
7da78b1f	13	\r
0d92cdc2	14	#ifndef _BIOS_GRAPHICS_OUTPUT_H\r
0d92cdc2	15	#define _BIOS_GRAPHICS_OUTPUT_H\r
7da78b1f	16	\r
	17	#include <Uefi.h>\r
	18	\r
	19	//\r
	20	// Driver Consumed Protocol Prototypes\r
	21	//\r
	22	#include <Protocol/DevicePath.h>\r
	23	#include <Protocol/PciIo.h>\r
	24	#include <Protocol/DriverBinding.h>\r
	25	#include <Protocol/ComponentName.h>\r
	26	#include <Protocol/ComponentName2.h>\r
	27	#include <Protocol/UgaDraw.h>\r
	28	#include <Protocol/VgaMiniPort.h>\r
	29	#include <Protocol/Legacy8259.h>\r
0d92cdc2	30	#include <Protocol/EdidActive.h>\r
	31	#include <Protocol/EdidDiscovered.h>\r
	32	#include <Protocol/DevicePath.h>\r
7da78b1f	33	\r
	34	#include <Library/UefiLib.h>\r
	35	#include <Library/DebugLib.h>\r
	36	#include <Library/UefiBootServicesTableLib.h>\r
	37	#include <Library/BaseMemoryLib.h>\r
0d92cdc2	38	#include <Library/DevicePathLib.h>\r
7da78b1f	39	\r
1a573c7e	40	#include <IndustryStandard/Pci.h>\r
7da78b1f	41	\r
7da78b1f	42	#include "VesaBiosExtensions.h"\r
7da78b1f	43	\r
	44	//\r
	45	// Packed format support: The number of bits reserved for each of the colors and the actual\r
	46	// position of RGB in the frame buffer is specified in the VBE Mode information\r
	47	//\r
	48	typedef struct {\r
	49	UINT8 Position; // Position of the color\r
	50	UINT8 Mask; // The number of bits expressed as a mask\r
	51	} BIOS_VIDEO_COLOR_PLACEMENT;\r
	52	\r
	53	//\r
0d92cdc2	54	// BIOS Graphics Output Graphical Mode Data\r
7da78b1f	55	//\r
	56	typedef struct {\r
	57	UINT16 VbeModeNumber;\r
	58	UINT16 BytesPerScanLine;\r
	59	VOID *LinearFrameBuffer;\r
0d92cdc2	60	UINTN FrameBufferSize;\r
7da78b1f	61	UINT32 HorizontalResolution;\r
7da78b1f	62	UINT32 VerticalResolution;\r
7da78b1f	63	UINT32 RefreshRate;\r
	64	UINT32 BitsPerPixel;\r
	65	BIOS_VIDEO_COLOR_PLACEMENT Red;\r
	66	BIOS_VIDEO_COLOR_PLACEMENT Green;\r
	67	BIOS_VIDEO_COLOR_PLACEMENT Blue;\r
0d92cdc2	68	BIOS_VIDEO_COLOR_PLACEMENT Reserved;\r
	69	EFI_GRAPHICS_PIXEL_FORMAT PixelFormat;\r
	70	EFI_PIXEL_BITMASK PixelBitMask;\r
7da78b1f	71	} BIOS_VIDEO_MODE_DATA;\r
	72	\r
	73	//\r
0d92cdc2	74	// BIOS video child handle private data Structure\r
7da78b1f	75	//\r
0d92cdc2	76	#define BIOS_VIDEO_DEV_SIGNATURE SIGNATURE_32 ('B', 'V', 'M', 'p')\r
7da78b1f	77	\r
	78	typedef struct {\r
	79	UINTN Signature;\r
	80	EFI_HANDLE Handle;\r
	81	\r
	82	//\r
f1294e4a	83	// Consumed Protocols inherited from parent controller.\r
7da78b1f	84	//\r
7da78b1f	85	EFI_PCI_IO_PROTOCOL *PciIo;\r
0d92cdc2	86	EFI_LEGACY_8259_PROTOCOL *Legacy8259;\r
f1294e4a	87	THUNK_CONTEXT *ThunkContext;\r
f1294e4a	88	\r
7da78b1f	89	//\r
	90	// Produced Protocols\r
	91	//\r
0d92cdc2	92	EFI_GRAPHICS_OUTPUT_PROTOCOL GraphicsOutput;\r
	93	EFI_EDID_DISCOVERED_PROTOCOL EdidDiscovered;\r
	94	EFI_EDID_ACTIVE_PROTOCOL EdidActive;\r
7da78b1f	95	EFI_VGA_MINI_PORT_PROTOCOL VgaMiniPort;\r
	96	\r
	97	//\r
	98	// General fields\r
	99	//\r
7da78b1f	100	BOOLEAN VgaCompatible;\r
0d92cdc2	101	BOOLEAN ProduceGraphicsOutput;\r
7da78b1f	102	\r
7da78b1f	103	//\r
0d92cdc2	104	// Graphics Output Protocol related fields\r
7da78b1f	105	//\r
7da78b1f	106	BOOLEAN HardwareNeedsStarting;\r
7da78b1f	107	BIOS_VIDEO_MODE_DATA *ModeData;\r
7da78b1f	108	UINT8 *LineBuffer;\r
0d92cdc2	109	EFI_GRAPHICS_OUTPUT_BLT_PIXEL *VbeFrameBuffer;\r
7da78b1f	110	UINT8 *VgaFrameBuffer;\r
	111	\r
	112	//\r
	113	// VESA Bios Extensions related fields\r
	114	//\r
	115	UINTN NumberOfPagesBelow1MB; // Number of 4KB pages in PagesBelow1MB\r
	116	EFI_PHYSICAL_ADDRESS PagesBelow1MB; // Buffer for all VBE Information Blocks\r
	117	VESA_BIOS_EXTENSIONS_INFORMATION_BLOCK *VbeInformationBlock; // 0x200 bytes. Must be allocated below 1MB\r
	118	VESA_BIOS_EXTENSIONS_MODE_INFORMATION_BLOCK *VbeModeInformationBlock; // 0x100 bytes. Must be allocated below 1MB\r
0d92cdc2	119	VESA_BIOS_EXTENSIONS_EDID_DATA_BLOCK *VbeEdidDataBlock; // 0x80 bytes. Must be allocated below 1MB\r
7da78b1f	120	VESA_BIOS_EXTENSIONS_CRTC_INFORMATION_BLOCK *VbeCrtcInformationBlock; // 59 bytes. Must be allocated below 1MB\r
	121	UINTN VbeSaveRestorePages; // Number of 4KB pages in VbeSaveRestoreBuffer\r
	122	EFI_PHYSICAL_ADDRESS VbeSaveRestoreBuffer; // Must be allocated below 1MB\r
	123	//\r
	124	// Status code\r
	125	//\r
	126	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
	127	} BIOS_VIDEO_DEV;\r
	128	\r
0d92cdc2	129	#define BIOS_VIDEO_DEV_FROM_PCI_IO_THIS(a) CR (a, BIOS_VIDEO_DEV, PciIo, BIOS_VIDEO_DEV_SIGNATURE)\r
0d92cdc2	130	#define BIOS_VIDEO_DEV_FROM_GRAPHICS_OUTPUT_THIS(a) CR (a, BIOS_VIDEO_DEV, GraphicsOutput, BIOS_VIDEO_DEV_SIGNATURE)\r
7da78b1f	131	#define BIOS_VIDEO_DEV_FROM_VGA_MINI_PORT_THIS(a) CR (a, BIOS_VIDEO_DEV, VgaMiniPort, BIOS_VIDEO_DEV_SIGNATURE)\r
7da78b1f	132	\r
b29a823d	133	#define GRAPHICS_OUTPUT_INVALIDE_MODE_NUMBER 0xffff\r
0d92cdc2	134	\r
d0c94e59	135	#define EFI_SEGMENT(_Adr) (UINT16) ((UINT16) (((UINTN) (_Adr)) >> 4) & 0xf000)\r
	136	#define EFI_OFFSET(_Adr) (UINT16) (((UINT16) ((UINTN) (_Adr))) & 0xffff)\r
	137	\r
7da78b1f	138	//\r
	139	// Global Variables\r
	140	//\r
	141	extern EFI_DRIVER_BINDING_PROTOCOL gBiosVideoDriverBinding;\r
	142	extern EFI_COMPONENT_NAME_PROTOCOL gBiosVideoComponentName;\r
	143	extern EFI_COMPONENT_NAME2_PROTOCOL gBiosVideoComponentName2;\r
	144	\r
	145	//\r
	146	// Driver Binding Protocol functions\r
	147	//\r
f1294e4a	148	/**\r
	149	Test to see if Bios Video could be supported on the Controller.\r
	150	\r
	151	@param This Pointer to driver binding protocol\r
	152	@param Controller Controller handle to connect\r
	153	@param RemainingDevicePath A pointer to the remaining portion of a device path\r
	154	\r
	155	@retval EFI_SUCCESS This driver supports this device.\r
	156	@retval other This driver does not support this device.\r
	157	\r
	158	**/\r
7da78b1f	159	EFI_STATUS\r
	160	EFIAPI\r
	161	BiosVideoDriverBindingSupported (\r
	162	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	163	IN EFI_HANDLE Controller,\r
	164	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
	165	)\r
f1294e4a	166	;\r
0d92cdc2	167	\r
f1294e4a	168	/**\r
f1294e4a	169	Install Graphics Output Protocol onto VGA device handles\r
0d92cdc2	170	\r
f1294e4a	171	@param This Pointer to driver binding protocol\r
	172	@param Controller Controller handle to connect\r
	173	@param RemainingDevicePath A pointer to the remaining portion of a device path\r
7da78b1f	174	\r
f1294e4a	175	@return EFI_STATUS\r
7da78b1f	176	\r
f1294e4a	177	**/\r
7da78b1f	178	EFI_STATUS\r
	179	EFIAPI\r
	180	BiosVideoDriverBindingStart (\r
	181	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	182	IN EFI_HANDLE Controller,\r
	183	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
	184	)\r
f1294e4a	185	;\r
0d92cdc2	186	\r
f1294e4a	187	/**\r
f1294e4a	188	Stop this driver on Controller \r
0d92cdc2	189	\r
f1294e4a	190	@param This Protocol instance pointer.\r
	191	@param Controller Handle of device to stop driver on\r
	192	@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r
	193	children is zero stop the entire bus driver.\r
	194	@param ChildHandleBuffer List of Child Handles to Stop.\r
7da78b1f	195	\r
f1294e4a	196	@retval EFI_SUCCESS This driver is removed Controller.\r
f1294e4a	197	@retval other This driver was not removed from this device.\r
7da78b1f	198	\r
f1294e4a	199	**/\r
7da78b1f	200	EFI_STATUS\r
	201	EFIAPI\r
	202	BiosVideoDriverBindingStop (\r
	203	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	204	IN EFI_HANDLE Controller,\r
	205	IN UINTN NumberOfChildren,\r
	206	IN EFI_HANDLE *ChildHandleBuffer\r
	207	)\r
7da78b1f	208	;\r
	209	\r
	210	//\r
	211	// Private worker functions\r
	212	//\r
f1294e4a	213	/**\r
	214	Check for VBE device\r
	215	\r
	216	@param BiosVideoPrivate - Pointer to BIOS_VIDEO_DEV structure\r
	217	\r
	218	@retval EFI_SUCCESS VBE device found\r
	219	\r
	220	**/\r
7da78b1f	221	EFI_STATUS\r
7830363c	222	EFIAPI\r
7da78b1f	223	BiosVideoCheckForVbe (\r
7830363c	224	IN OUT BIOS_VIDEO_DEV *BiosVideoPrivate\r
7da78b1f	225	)\r
f1294e4a	226	;\r
0d92cdc2	227	\r
f1294e4a	228	/**\r
f1294e4a	229	Check for VGA device\r
0d92cdc2	230	\r
f1294e4a	231	@param BiosVideoPrivate - Pointer to BIOS_VIDEO_DEV structure\r
0d92cdc2	232	\r
f1294e4a	233	@retval EFI_SUCCESS Standard VGA device found\r
f1294e4a	234	**/\r
7da78b1f	235	\r
7da78b1f	236	EFI_STATUS\r
7830363c	237	EFIAPI\r
7da78b1f	238	BiosVideoCheckForVga (\r
	239	BIOS_VIDEO_DEV *BiosVideoPrivate\r
	240	)\r
7da78b1f	241	;\r
7da78b1f	242	\r
f1294e4a	243	/**\r
f1294e4a	244	Collect the resource from destroyed bios video device.\r
7da78b1f	245	\r
f1294e4a	246	@param BiosVideoPrivate Video child device private data structure\r
7da78b1f	247	\r
f1294e4a	248	**/\r
0d92cdc2	249	VOID\r
	250	BiosVideoDeviceReleaseResource (\r
	251	BIOS_VIDEO_DEV *BiosVideoChildPrivate\r
	252	)\r
f1294e4a	253	;\r
0d92cdc2	254	\r
f1294e4a	255	//\r
	256	// BIOS Graphics Output Protocol functions\r
	257	//\r
	258	/**\r
0d92cdc2	259	\r
f1294e4a	260	Graphics Output protocol interface to get video mode\r
0d92cdc2	261	\r
0d92cdc2	262	\r
f1294e4a	263	@param This - Protocol instance pointer.\r
	264	@param ModeNumber - The mode number to return information on.\r
	265	@param SizeOfInfo - A pointer to the size, in bytes, of the Info buffer.\r
	266	@param Info - Caller allocated buffer that returns information about ModeNumber.\r
0d92cdc2	267	\r
f1294e4a	268	@return EFI_SUCCESS - Mode information returned.\r
	269	EFI_DEVICE_ERROR - A hardware error occurred trying to retrieve the video mode.\r
	270	EFI_NOT_STARTED - Video display is not initialized. Call SetMode ()\r
	271	EFI_INVALID_PARAMETER - One of the input args was NULL.\r
0d92cdc2	272	\r
f1294e4a	273	**/\r
7da78b1f	274	EFI_STATUS\r
7da78b1f	275	EFIAPI\r
0d92cdc2	276	BiosVideoGraphicsOutputQueryMode (\r
	277	IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,\r
	278	IN UINT32 ModeNumber,\r
	279	OUT UINTN *SizeOfInfo,\r
	280	OUT EFI_GRAPHICS_OUTPUT_MODE_INFORMATION **Info\r
7da78b1f	281	)\r
f1294e4a	282	;\r
7da78b1f	283	\r
f1294e4a	284	/**\r
7da78b1f	285	\r
f1294e4a	286	Graphics Output protocol interface to set video mode\r
7da78b1f	287	\r
7da78b1f	288	\r
f1294e4a	289	@param This - Protocol instance pointer.\r
f1294e4a	290	@param ModeNumber - The mode number to be set.\r
7da78b1f	291	\r
f1294e4a	292	@return EFI_SUCCESS - Graphics mode was changed.\r
	293	EFI_DEVICE_ERROR - The device had an error and could not complete the request.\r
	294	EFI_UNSUPPORTED - ModeNumber is not supported by this device.\r
0d92cdc2	295	\r
f1294e4a	296	**/\r
0d92cdc2	297	EFI_STATUS\r
	298	EFIAPI\r
	299	BiosVideoGraphicsOutputSetMode (\r
	300	IN EFI_GRAPHICS_OUTPUT_PROTOCOL * This,\r
	301	IN UINT32 ModeNumber\r
	302	)\r
f1294e4a	303	;\r
0d92cdc2	304	\r
f1294e4a	305	/**\r
0d92cdc2	306	\r
f1294e4a	307	Graphics Output protocol instance to block transfer for VBE device\r
0d92cdc2	308	\r
7da78b1f	309	\r
f1294e4a	310	@param This - Pointer to Graphics Output protocol instance\r
	311	@param BltBuffer - The data to transfer to screen\r
	312	@param BltOperation - The operation to perform\r
	313	@param SourceX - The X coordinate of the source for BltOperation\r
	314	@param SourceY - The Y coordinate of the source for BltOperation\r
	315	@param DestinationX - The X coordinate of the destination for BltOperation\r
	316	@param DestinationY - The Y coordinate of the destination for BltOperation\r
	317	@param Width - The width of a rectangle in the blt rectangle in pixels\r
	318	@param Height - The height of a rectangle in the blt rectangle in pixels\r
	319	@param Delta - Not used for EfiBltVideoFill and EfiBltVideoToVideo operation.\r
	320	If a Delta of 0 is used, the entire BltBuffer will be operated on.\r
	321	If a subrectangle of the BltBuffer is used, then Delta represents\r
	322	the number of bytes in a row of the BltBuffer.\r
	323	\r
	324	@return EFI_INVALID_PARAMETER - Invalid parameter passed in\r
	325	EFI_SUCCESS - Blt operation success\r
	326	\r
	327	**/\r
7da78b1f	328	EFI_STATUS\r
7da78b1f	329	EFIAPI\r
0d92cdc2	330	BiosVideoGraphicsOutputVbeBlt (\r
	331	IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,\r
	332	IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL\r
	333	IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,\r
	334	IN UINTN SourceX,\r
	335	IN UINTN SourceY,\r
	336	IN UINTN DestinationX,\r
	337	IN UINTN DestinationY,\r
	338	IN UINTN Width,\r
	339	IN UINTN Height,\r
	340	IN UINTN Delta\r
7da78b1f	341	)\r
7da78b1f	342	;\r
7da78b1f	343	\r
f1294e4a	344	/**\r
	345	Grahpics Output protocol instance to block transfer for VGA device\r
	346	\r
	347	@param This Pointer to Grahpics Output protocol instance\r
	348	@param BltBuffer The data to transfer to screen\r
	349	@param BltOperation The operation to perform\r
	350	@param SourceX The X coordinate of the source for BltOperation\r
	351	@param SourceY The Y coordinate of the source for BltOperation\r
	352	@param DestinationX The X coordinate of the destination for BltOperation\r
	353	@param DestinationY The Y coordinate of the destination for BltOperation\r
	354	@param Width The width of a rectangle in the blt rectangle in pixels\r
	355	@param Height The height of a rectangle in the blt rectangle in pixels\r
	356	@param Delta Not used for EfiBltVideoFill and EfiBltVideoToVideo operation.\r
	357	If a Delta of 0 is used, the entire BltBuffer will be operated on.\r
	358	If a subrectangle of the BltBuffer is used, then Delta represents\r
	359	the number of bytes in a row of the BltBuffer.\r
	360	\r
	361	@retval EFI_INVALID_PARAMETER Invalid parameter passed in\r
	362	@retval EFI_SUCCESS Blt operation success\r
	363	\r
	364	**/\r
7da78b1f	365	EFI_STATUS\r
7da78b1f	366	EFIAPI\r
0d92cdc2	367	BiosVideoGraphicsOutputVgaBlt (\r
	368	IN EFI_GRAPHICS_OUTPUT_PROTOCOL *This,\r
	369	IN EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer, OPTIONAL\r
	370	IN EFI_GRAPHICS_OUTPUT_BLT_OPERATION BltOperation,\r
	371	IN UINTN SourceX,\r
	372	IN UINTN SourceY,\r
	373	IN UINTN DestinationX,\r
	374	IN UINTN DestinationY,\r
	375	IN UINTN Width,\r
	376	IN UINTN Height,\r
	377	IN UINTN Delta\r
7da78b1f	378	)\r
7da78b1f	379	;\r
	380	\r
	381	//\r
	382	// BIOS VGA Mini Port Protocol functions\r
	383	//\r
f1294e4a	384	/**\r
	385	VgaMiniPort protocol interface to set mode\r
	386	\r
	387	@param This Pointer to VgaMiniPort protocol instance\r
	388	@param ModeNumber The index of the mode\r
	389	\r
	390	@retval EFI_UNSUPPORTED The requested mode is not supported\r
	391	@retval EFI_SUCCESS The requested mode is set successfully\r
	392	\r
	393	**/\r
7da78b1f	394	EFI_STATUS\r
	395	EFIAPI\r
	396	BiosVideoVgaMiniPortSetMode (\r
	397	IN EFI_VGA_MINI_PORT_PROTOCOL *This,\r
	398	IN UINTN ModeNumber\r
	399	)\r
7da78b1f	400	;\r
7da78b1f	401	\r
f1294e4a	402	/**\r
	403	Judge whether this device is VGA device.\r
	404	\r
	405	@param PciIo Parent PciIo protocol instance pointer\r
7da78b1f	406	\r
f1294e4a	407	@retval TRUE Is vga device\r
	408	@retval FALSE Is no vga device\r
	409	**/\r
7da78b1f	410	BOOLEAN\r
	411	BiosVideoIsVga (\r
	412	IN EFI_PCI_IO_PROTOCOL *PciIo\r
	413	)\r
	414	;\r
	415	\r
	416	\r
	417	//\r
	418	// Standard VGA Definitions\r
	419	//\r
	420	#define VGA_HORIZONTAL_RESOLUTION 640\r
	421	#define VGA_VERTICAL_RESOLUTION 480\r
	422	#define VGA_NUMBER_OF_BIT_PLANES 4\r
	423	#define VGA_PIXELS_PER_BYTE 8\r
	424	#define VGA_BYTES_PER_SCAN_LINE (VGA_HORIZONTAL_RESOLUTION / VGA_PIXELS_PER_BYTE)\r
	425	#define VGA_BYTES_PER_BIT_PLANE (VGA_VERTICAL_RESOLUTION * VGA_BYTES_PER_SCAN_LINE)\r
	426	\r
	427	#define VGA_GRAPHICS_CONTROLLER_ADDRESS_REGISTER 0x3ce\r
	428	#define VGA_GRAPHICS_CONTROLLER_DATA_REGISTER 0x3cf\r
	429	\r
	430	#define VGA_GRAPHICS_CONTROLLER_SET_RESET_REGISTER 0x00\r
	431	\r
	432	#define VGA_GRAPHICS_CONTROLLER_ENABLE_SET_RESET_REGISTER 0x01\r
	433	\r
	434	#define VGA_GRAPHICS_CONTROLLER_COLOR_COMPARE_REGISTER 0x02\r
	435	\r
	436	#define VGA_GRAPHICS_CONTROLLER_DATA_ROTATE_REGISTER 0x03\r
	437	#define VGA_GRAPHICS_CONTROLLER_FUNCTION_REPLACE 0x00\r
	438	#define VGA_GRAPHICS_CONTROLLER_FUNCTION_AND 0x08\r
	439	#define VGA_GRAPHICS_CONTROLLER_FUNCTION_OR 0x10\r
	440	#define VGA_GRAPHICS_CONTROLLER_FUNCTION_XOR 0x18\r
	441	\r
	442	#define VGA_GRAPHICS_CONTROLLER_READ_MAP_SELECT_REGISTER 0x04\r
	443	\r
	444	#define VGA_GRAPHICS_CONTROLLER_MODE_REGISTER 0x05\r
	445	#define VGA_GRAPHICS_CONTROLLER_READ_MODE_0 0x00\r
	446	#define VGA_GRAPHICS_CONTROLLER_READ_MODE_1 0x08\r
	447	#define VGA_GRAPHICS_CONTROLLER_WRITE_MODE_0 0x00\r
	448	#define VGA_GRAPHICS_CONTROLLER_WRITE_MODE_1 0x01\r
	449	#define VGA_GRAPHICS_CONTROLLER_WRITE_MODE_2 0x02\r
	450	#define VGA_GRAPHICS_CONTROLLER_WRITE_MODE_3 0x03\r
	451	\r
	452	#define VGA_GRAPHICS_CONTROLLER_MISCELLANEOUS_REGISTER 0x06\r
	453	\r
	454	#define VGA_GRAPHICS_CONTROLLER_COLOR_DONT_CARE_REGISTER 0x07\r
	455	\r
	456	#define VGA_GRAPHICS_CONTROLLER_BIT_MASK_REGISTER 0x08\r
	457	\r
f1294e4a	458	/**\r
	459	Initialize legacy environment for BIOS INI caller.\r
	460	\r
	461	@param ThunkContext the instance pointer of THUNK_CONTEXT\r
	462	**/\r
0d92cdc2	463	VOID\r
0d92cdc2	464	InitializeBiosIntCaller (\r
f1294e4a	465	THUNK_CONTEXT *ThunkContext\r
0d92cdc2	466	);\r
0d92cdc2	467	\r
f1294e4a	468	/**\r
	469	Initialize interrupt redirection code and entries, because\r
	470	IDT Vectors 0x68-0x6f must be redirected to IDT Vectors 0x08-0x0f.\r
	471	Or the interrupt will lost when we do thunk.\r
	472	NOTE: We do not reset 8259 vector base, because it will cause pending\r
	473	interrupt lost.\r
	474	\r
	475	@param Legacy8259 Instance pointer for EFI_LEGACY_8259_PROTOCOL.\r
	476	\r
	477	**/ \r
0d92cdc2	478	VOID\r
0d92cdc2	479	InitializeInterruptRedirection (\r
f1294e4a	480	IN EFI_LEGACY_8259_PROTOCOL *Legacy8259\r
0d92cdc2	481	);\r
0d92cdc2	482	\r
f1294e4a	483	/**\r
	484	Thunk to 16-bit real mode and execute a software interrupt with a vector \r
	485	of BiosInt. Regs will contain the 16-bit register context on entry and \r
	486	exit.\r
	487	\r
	488	@param This Protocol instance pointer.\r
	489	@param BiosInt Processor interrupt vector to invoke\r
	490	@param Reg Register contexted passed into (and returned) from thunk to 16-bit mode\r
	491	\r
	492	@retval TRUE Thunk completed, and there were no BIOS errors in the target code.\r
	493	See Regs for status.\r
	494	@retval FALSE There was a BIOS erro in the target code. \r
	495	**/ \r
0d92cdc2	496	BOOLEAN\r
	497	EFIAPI\r
	498	LegacyBiosInt86 (\r
	499	IN BIOS_VIDEO_DEV *BiosDev,\r
	500	IN UINT8 BiosInt,\r
d0c94e59	501	IN IA32_REGISTER_SET *Regs\r
0d92cdc2	502	); \r
0d92cdc2	503	\r
7da78b1f	504	#endif\r