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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7836 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
klu2 2009-03-09 07:48:44 +00:00
parent 8a9e0b7274
commit a39d85f6ed
1 changed files with 40 additions and 0 deletions
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40
DuetPkg/BiosVideoThunkDxe/BiosVideo.c
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@ -1088,6 +1088,21 @@ BiosVideoCheckForVbe (
//
// Test to see if the Video Adapter is compliant with VBE 3.0
//
// INT 10 - VESA SuperVGA BIOS (VBE) - GET SuperVGA INFORMATION
//
// AX = 4F00h
// ES:DI -> buffer for SuperVGA information (see #00077)
// Return: AL = 4Fh if function supported
// AH = status
// 00h successful
// ES:DI buffer filled
// 01h failed
// ---VBE v2.0---
// 02h function not supported by current hardware configuration
// 03h function invalid in current video mode
// Desc: determine whether VESA BIOS extensions are present and the capabilities
// supported by the display adapter
//
gBS->SetMem (&Regs, sizeof (Regs), 0);
Regs.X.AX = VESA_BIOS_EXTENSIONS_RETURN_CONTROLLER_INFORMATION;
gBS->SetMem (BiosVideoPrivate->VbeInformationBlock, sizeof (VESA_BIOS_EXTENSIONS_INFORMATION_BLOCK), 0);
@ -1121,6 +1136,19 @@ BiosVideoCheckForVbe (
//
// Read EDID information
//
// INT 10 - VESA VBE/DC (Display Data Channel) - READ EDID
//
// AX = 4F15h
// BL = 01h
// CX = 0000h
// DX = 0000h
// ES:DI -> 128-byte buffer for EDID record (see #00127)
// Return: AL = 4Fh if function supported
// AH = status
// 00h successful
// ES:DI buffer filled
// 01h failed (e.g. non-DDC monitor)
//
gBS->SetMem (&Regs, sizeof (Regs), 0);
Regs.X.AX = VESA_BIOS_EXTENSIONS_EDID;
Regs.X.BX = 1;
@ -1202,6 +1230,18 @@ BiosVideoCheckForVbe (
//
// Get the information about the mode
//
// INT 10 - VESA SuperVGA BIOS - GET SuperVGA MODE INFORMATION
//
// AX = 4F01h
// CX = SuperVGA video mode (see #04082 for bitfields)
// ES:DI -> 256-byte buffer for mode information (see #00079)
// Return: AL = 4Fh if function supported
// AH = status
// 00h successful
// ES:DI buffer filled
// 01h failed
// Desc: determine the attributes of the specified video mode
//
gBS->SetMem (&Regs, sizeof (Regs), 0);
Regs.X.AX = VESA_BIOS_EXTENSIONS_RETURN_MODE_INFORMATION;
Regs.X.CX = *ModeNumberPtr;