Revision: 14073
http://edk2.svn.sourceforge.net/edk2/?rev=14073&view=rev
Author: li-elvin
Date: 2013-01-22 06:18:50 +0000 (Tue, 22 Jan 2013)
Log Message:
-----------
Parse full EDID data to get all video resolutions supported by monitors.
Signed-off-by: Li Elvin <elvin...@intel.com>
Reviewed-by: Ni Ruiyu <ruiyu...@intel.com>
Modified Paths:
--------------
trunk/edk2/IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/BiosVideo.c
trunk/edk2/IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/VesaBiosExtensions.h
Modified: trunk/edk2/IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/BiosVideo.c
===================================================================
--- trunk/edk2/IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/BiosVideo.c
2013-01-22 06:08:24 UTC (rev 14072)
+++ trunk/edk2/IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/BiosVideo.c
2013-01-22 06:18:50 UTC (rev 14073)
@@ -1,7 +1,7 @@
/** @file
ConsoleOut Routines that speak VGA.
-Copyright (c) 2007 - 2012, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2007 - 2013, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions
@@ -1129,51 +1129,81 @@
((EdidDataBlock->EstablishedTimings[2] & 0x80) << 9) ;
for (Index = 0; Index <
VESA_BIOS_EXTENSIONS_EDID_ESTABLISHED_TIMING_MAX_NUMBER; Index ++) {
if ((TimingBits & 0x1) != 0) {
+ DEBUG ((EFI_D_INFO, "Established Timing: %d x %d\n",
+ mEstablishedEdidTiming[Index].HorizontalResolution,
mEstablishedEdidTiming[Index].VerticalResolution));
ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey
(&mEstablishedEdidTiming[Index]);
ValidNumber ++;
}
TimingBits = TimingBits >> 1;
}
- } else {
+ }
+
+ //
+ // Parse the standard timing data
+ //
+ BufferIndex = &EdidDataBlock->StandardTimingIdentification[0];
+ for (Index = 0; Index < 8; Index ++) {
//
- // If no Established timing data, read the standard timing data
+ // Check if this is a valid Standard Timing entry
+ // VESA documents unused fields should be set to 01h
//
- BufferIndex = &EdidDataBlock->StandardTimingIdentification[0];
- for (Index = 0; Index < 8; Index ++) {
- if ((BufferIndex[0] != 0x1) && (BufferIndex[1] != 0x1)){
- //
- // A valid Standard Timing
- //
- HorizontalResolution = (UINT16) (BufferIndex[0] * 8 + 248);
- AspectRatio = (UINT8) (BufferIndex[1] >> 6);
- switch (AspectRatio) {
- case 0:
- VerticalResolution = (UINT16) (HorizontalResolution / 16 * 10);
- break;
- case 1:
- VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);
- break;
- case 2:
- VerticalResolution = (UINT16) (HorizontalResolution / 5 * 4);
- break;
- case 3:
- VerticalResolution = (UINT16) (HorizontalResolution / 16 * 9);
- break;
- default:
- VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);
- break;
- }
- RefreshRate = (UINT8) ((BufferIndex[1] & 0x1f) + 60);
- TempTiming.HorizontalResolution = HorizontalResolution;
- TempTiming.VerticalResolution = VerticalResolution;
- TempTiming.RefreshRate = RefreshRate;
- ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&TempTiming);
- ValidNumber ++;
+ if ((BufferIndex[0] != 0x1) && (BufferIndex[1] != 0x1)){
+ //
+ // A valid Standard Timing
+ //
+ HorizontalResolution = (UINT16) (BufferIndex[0] * 8 + 248);
+ AspectRatio = (UINT8) (BufferIndex[1] >> 6);
+ switch (AspectRatio) {
+ case 0:
+ VerticalResolution = (UINT16) (HorizontalResolution / 16 * 10);
+ break;
+ case 1:
+ VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);
+ break;
+ case 2:
+ VerticalResolution = (UINT16) (HorizontalResolution / 5 * 4);
+ break;
+ case 3:
+ VerticalResolution = (UINT16) (HorizontalResolution / 16 * 9);
+ break;
+ default:
+ VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);
+ break;
}
- BufferIndex += 2;
+ RefreshRate = (UINT8) ((BufferIndex[1] & 0x1f) + 60);
+ DEBUG ((EFI_D_INFO, "Standard Timing: %d x %d\n", HorizontalResolution,
VerticalResolution));
+ TempTiming.HorizontalResolution = HorizontalResolution;
+ TempTiming.VerticalResolution = VerticalResolution;
+ TempTiming.RefreshRate = RefreshRate;
+ ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&TempTiming);
+ ValidNumber ++;
}
+ BufferIndex += 2;
}
+ //
+ // Parse the Detailed Timing data
+ //
+ BufferIndex = &EdidDataBlock->DetailedTimingDescriptions[0];
+ for (Index = 0; Index < 4; Index ++, BufferIndex +=
VESA_BIOS_EXTENSIONS_DETAILED_TIMING_EACH_DESCRIPTOR_SIZE) {
+ if ((BufferIndex[0] == 0x0) && (BufferIndex[1] == 0x0)) {
+ //
+ // Check if this is a valid Detailed Timing Descriptor
+ // If first 2 bytes are zero, it is monitor descriptor other than
detailed timing descriptor
+ //
+ continue;
+ }
+ //
+ // Calculate Horizontal and Vertical resolution
+ //
+ TempTiming.HorizontalResolution = ((UINT16)(BufferIndex[4] & 0xF0) << 4) |
(BufferIndex[2]);
+ TempTiming.VerticalResolution = ((UINT16)(BufferIndex[7] & 0xF0) << 4) |
(BufferIndex[5]);
+ DEBUG ((EFI_D_INFO, "Detailed Timing %d: %d x %d\n",
+ Index, TempTiming.HorizontalResolution,
TempTiming.VerticalResolution));
+ ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&TempTiming);
+ ValidNumber ++;
+ }
+
ValidEdidTiming->ValidNumber = ValidNumber;
return TRUE;
}
Modified:
trunk/edk2/IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/VesaBiosExtensions.h
===================================================================
---
trunk/edk2/IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/VesaBiosExtensions.h
2013-01-22 06:08:24 UTC (rev 14072)
+++
trunk/edk2/IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/VesaBiosExtensions.h
2013-01-22 06:18:50 UTC (rev 14073)
@@ -1,6 +1,6 @@
/** @file
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions
@@ -168,6 +168,21 @@
#define VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE 128
#define VESA_BIOS_EXTENSIONS_EDID_ESTABLISHED_TIMING_MAX_NUMBER 17
+//
+// Established Timings: 24 possible resolutions
+// Standard Timings: 8 possible resolutions
+// Detailed Timings: 4 possible resolutions
+//
+#define VESA_BIOS_EXTENSIONS_EDID_TIMING_MAX_NUMBER 36
+
+//
+// Timing data size for Established Timings, Standard Timings and Detailed
Timings
+//
+#define VESA_BIOS_EXTENSIONS_ESTABLISHED_TIMING_SIZE 3
+#define VESA_BIOS_EXTENSIONS_STANDARD_TIMING_SIZE 16
+#define VESA_BIOS_EXTENSIONS_DETAILED_TIMING_EACH_DESCRIPTOR_SIZE 18
+#define VESA_BIOS_EXTENSIONS_DETAILED_TIMING_DESCRIPTOR_MAX_SIZE 72
+
typedef struct {
UINT16 HorizontalResolution;
UINT16 VerticalResolution;
@@ -176,7 +191,7 @@
typedef struct {
UINT32 ValidNumber;
- UINT32 Key[VESA_BIOS_EXTENSIONS_EDID_ESTABLISHED_TIMING_MAX_NUMBER];
+ UINT32 Key[VESA_BIOS_EXTENSIONS_EDID_TIMING_MAX_NUMBER];
} VESA_BIOS_EXTENSIONS_VALID_EDID_TIMING;
typedef struct {
@@ -203,9 +218,9 @@
UINT8 BlueY; //Blue-y Bits 9 - 2
UINT8 WhiteX; //White-x Bits 9 - 2
UINT8 WhiteY; //White-x Bits 9 - 2
- UINT8 EstablishedTimings[3];
- UINT8 StandardTimingIdentification[16];
- UINT8 DetailedTimingDescriptions[72];
+ UINT8 EstablishedTimings[VESA_BIOS_EXTENSIONS_ESTABLISHED_TIMING_SIZE];
+ UINT8
StandardTimingIdentification[VESA_BIOS_EXTENSIONS_STANDARD_TIMING_SIZE];
+ UINT8
DetailedTimingDescriptions[VESA_BIOS_EXTENSIONS_DETAILED_TIMING_DESCRIPTOR_MAX_SIZE];
UINT8 ExtensionFlag; //Number of (optional) 128-byte
EDID extension blocks to follow
UINT8 Checksum;
} VESA_BIOS_EXTENSIONS_EDID_DATA_BLOCK;
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