diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/VBoxPkg/VBoxVgaDxe/Edid.c')
| -rw-r--r-- | src/VBox/Devices/EFI/Firmware/VBoxPkg/VBoxVgaDxe/Edid.c | 676 |
1 files changed, 676 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/VBoxPkg/VBoxVgaDxe/Edid.c b/src/VBox/Devices/EFI/Firmware/VBoxPkg/VBoxVgaDxe/Edid.c new file mode 100644 index 00000000..4c3c73c1 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/VBoxPkg/VBoxVgaDxe/Edid.c @@ -0,0 +1,676 @@ +/* $Id: Edid.c $ */ +/** @file + * Edid.c + */ + +/* + * Copyright (C) 2009-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + +/* + This code is based on: + + Read EDID information and parse EDID information. + + Copyright (c) 2008, Intel Corporation + All rights reserved. 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. + +*/ + +#include "VBoxVga.h" +#include "VBoxVgaI2c.h" + +// +// EDID block +// +typedef struct { + UINT8 Header[8]; //EDID header "00 FF FF FF FF FF FF 00" + UINT16 ManufactureName; //EISA 3-character ID + UINT16 ProductCode; //Vendor assigned code + UINT32 SerialNumber; //32-bit serial number + UINT8 WeekOfManufacture; //Week number + UINT8 YearOfManufacture; //Year + UINT8 EdidVersion; //EDID Structure Version + UINT8 EdidRevision; //EDID Structure Revision + UINT8 VideoInputDefinition; + UINT8 MaxHorizontalImageSize; //cm + UINT8 MaxVerticalImageSize; //cm + UINT8 DisplayTransferCharacteristic; + UINT8 FeatureSupport; + UINT8 RedGreenLowBits; //Rx1 Rx0 Ry1 Ry0 Gx1 Gx0 Gy1Gy0 + UINT8 BlueWhiteLowBits; //Bx1 Bx0 By1 By0 Wx1 Wx0 Wy1 Wy0 + UINT8 RedX; //Red-x Bits 9 - 2 + UINT8 RedY; //Red-y Bits 9 - 2 + UINT8 GreenX; //Green-x Bits 9 - 2 + UINT8 GreenY; //Green-y Bits 9 - 2 + UINT8 BlueX; //Blue-x Bits 9 - 2 + 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 ExtensionFlag; //Number of (optional) 128-byte EDID extension blocks to follow + UINT8 Checksum; +} EDID_BLOCK; + +#define EDID_BLOCK_SIZE 128 +#define VBE_EDID_ESTABLISHED_TIMING_MAX_NUMBER 17 + +typedef struct { + UINT16 HorizontalResolution; + UINT16 VerticalResolution; + UINT16 RefreshRate; +} EDID_TIMING; + +typedef struct { + UINT32 ValidNumber; + UINT32 Key[VBE_EDID_ESTABLISHED_TIMING_MAX_NUMBER]; +} VALID_EDID_TIMING; + +// +// Standard timing defined by VESA EDID +// +EDID_TIMING mVbeEstablishedEdidTiming[] = { + // + // Established Timing I + // + {800, 600, 60}, + {800, 600, 56}, + {640, 480, 75}, + {640, 480, 72}, + {640, 480, 67}, + {640, 480, 60}, + {720, 400, 88}, + {720, 400, 70}, + // + // Established Timing II + // + {1280, 1024, 75}, + {1024, 768, 75}, + {1024, 768, 70}, + {1024, 768, 60}, + {1024, 768, 87}, + {832, 624, 75}, + {800, 600, 75}, + {800, 600, 72}, + // + // Established Timing III + // + {1152, 870, 75} +}; + +/** + Read EDID information from I2C Bus on CirrusLogic. + + @param Private Pointer to VBOX_VGA_PRIVATE_DATA. + @param EdidDataBlock Pointer to EDID data block. + @param EdidSize Returned EDID block size. + + @retval EFI_UNSUPPORTED + @retval EFI_SUCCESS + +**/ +EFI_STATUS +ReadEdidData ( + VBOX_VGA_PRIVATE_DATA *Private, + UINT8 **EdidDataBlock, + UINTN *EdidSize + ) +{ + UINTN Index; + UINT8 EdidData[EDID_BLOCK_SIZE * 2]; + UINT8 *ValidEdid; + UINT64 Signature; + + for (Index = 0; Index < EDID_BLOCK_SIZE * 2; Index ++) { + I2cReadByte (Private->PciIo, 0xa0, (UINT8)Index, &EdidData[Index]); + } + + // + // Search for the EDID signature + // + ValidEdid = &EdidData[0]; + Signature = 0x00ffffffffffff00ull; + for (Index = 0; Index < EDID_BLOCK_SIZE * 2; Index ++, ValidEdid ++) { + if (CompareMem (ValidEdid, &Signature, 8) == 0) { + break; + } + } + + if (Index == 256) { + // + // No EDID signature found + // + return EFI_UNSUPPORTED; + } + + *EdidDataBlock = AllocateCopyPool ( + sizeof (EDID_BLOCK_SIZE), + ValidEdid + ); + if (*EdidDataBlock == NULL) { + return EFI_OUT_OF_RESOURCES; + } + + // + // Currently only support EDID 1.x + // + *EdidSize = EDID_BLOCK_SIZE; + + return EFI_SUCCESS; +} + +/** + Generate a search key for a specified timing data. + + @param EdidTiming Pointer to EDID timing + + @return The 32 bit unique key for search. + +**/ +UINT32 +CalculateEdidKey ( + EDID_TIMING *EdidTiming + ) +{ + UINT32 Key; + + // + // Be sure no conflicts for all standard timing defined by VESA. + // + Key = (EdidTiming->HorizontalResolution * 2) + EdidTiming->VerticalResolution; + return Key; +} + +/** + Search a specified Timing in all the valid EDID timings. + + @param ValidEdidTiming All valid EDID timing information. + @param EdidTiming The Timing to search for. + + @retval TRUE Found. + @retval FALSE Not found. + +**/ +BOOLEAN +SearchEdidTiming ( + VALID_EDID_TIMING *ValidEdidTiming, + EDID_TIMING *EdidTiming + ) +{ + UINT32 Index; + UINT32 Key; + + Key = CalculateEdidKey (EdidTiming); + + for (Index = 0; Index < ValidEdidTiming->ValidNumber; Index ++) { + if (Key == ValidEdidTiming->Key[Index]) { + return TRUE; + } + } + + return FALSE; +} + +/** + Parse the Established Timing and Standard Timing in EDID data block. + + @param EdidBuffer Pointer to EDID data block + @param ValidEdidTiming Valid EDID timing information + + @retval TRUE The EDID data is valid. + @retval FALSE The EDID data is invalid. + +**/ +BOOLEAN +ParseEdidData ( + UINT8 *EdidBuffer, + VALID_EDID_TIMING *ValidEdidTiming + ) +{ + UINT8 CheckSum; + UINT32 Index; + UINT32 ValidNumber; + UINT32 TimingBits; + UINT8 *BufferIndex; + UINT16 HorizontalResolution; + UINT16 VerticalResolution; + UINT8 AspectRatio; + UINT8 RefreshRate; + EDID_TIMING TempTiming; + EDID_BLOCK *EdidDataBlock; + + EdidDataBlock = (EDID_BLOCK *) EdidBuffer; + + // + // Check the checksum of EDID data + // + CheckSum = 0; + for (Index = 0; Index < EDID_BLOCK_SIZE; Index ++) { + CheckSum = (UINT8) (CheckSum + EdidBuffer[Index]); + } + if (CheckSum != 0) { + return FALSE; + } + + ValidNumber = 0; + SetMem (ValidEdidTiming, sizeof (VALID_EDID_TIMING), 0); + + if ((EdidDataBlock->EstablishedTimings[0] != 0) || + (EdidDataBlock->EstablishedTimings[1] != 0) || + (EdidDataBlock->EstablishedTimings[2] != 0) + ) { + // + // Established timing data + // + TimingBits = EdidDataBlock->EstablishedTimings[0] | + (EdidDataBlock->EstablishedTimings[1] << 8) | + ((EdidDataBlock->EstablishedTimings[2] & 0x80) << 9) ; + for (Index = 0; Index < VBE_EDID_ESTABLISHED_TIMING_MAX_NUMBER; Index ++) { + if (TimingBits & 0x1) { + ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&mVbeEstablishedEdidTiming[Index]); + ValidNumber ++; + } + TimingBits = TimingBits >> 1; + } + } else { + // + // If no Established timing data, read the standard timing data + // + 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 ++; + } + BufferIndex += 2; + } + } + + ValidEdidTiming->ValidNumber = ValidNumber; + return TRUE; +} + +static uint16_t in_word(uint16_t port, uint16_t addr) +{ + ASMOutU16(port, addr); + return ASMInU16(port); +} + +static EFI_STATUS VBoxVgaVideoModeInitExtra(void) +{ + UINT16 w, cur_info_ofs, vmode, xres, yres; + UINTN Index; + VBOX_VGA_VIDEO_MODES *VideoMode; + + // Read and check the VBE Extra Data magic + w = in_word(VBE_EXTRA_PORT, 0); + if (w != VBEHEADER_MAGIC) { + DEBUG((DEBUG_INFO, "%a:%d could not find VBE magic, got %x\n", __FILE__, __LINE__, w)); + return EFI_NOT_FOUND; + } + + cur_info_ofs = sizeof(VBEHeader); + + Index = VBoxVgaVideoModeCount - 16; + VideoMode = &VBoxVgaVideoModes[Index]; + vmode = in_word(VBE_EXTRA_PORT, cur_info_ofs + OFFSET_OF(ModeInfoListItem, mode)); + while (vmode != VBE_VESA_MODE_END_OF_LIST) + { + xres = in_word(VBE_EXTRA_PORT, cur_info_ofs + OFFSET_OF(ModeInfoListItem, info.XResolution)); + yres = in_word(VBE_EXTRA_PORT, cur_info_ofs + OFFSET_OF(ModeInfoListItem, info.YResolution)); + + if (vmode >= VBE_VBOX_MODE_CUSTOM1 && vmode <= VBE_VBOX_MODE_CUSTOM16 && xres && yres && Index < VBoxVgaVideoModeCount) { + VideoMode->Width = xres; + VideoMode->Height = yres; + VideoMode->ColorDepth = 32; + VideoMode->RefreshRate = 60; + VideoMode->MiscSetting = 0x01; + VideoMode++; + Index++; + } + + cur_info_ofs += sizeof(ModeInfoListItem); + vmode = in_word(VBE_EXTRA_PORT, cur_info_ofs + OFFSET_OF(ModeInfoListItem, mode)); + } + return EFI_SUCCESS; +} + +/** + Construct the valid video modes for VBoxVga. + +**/ +EFI_STATUS +VBoxVgaVideoModeSetup ( + VBOX_VGA_PRIVATE_DATA *Private + ) +{ + EFI_STATUS Status; + UINT32 Index; + BOOLEAN EdidFound; + EFI_EDID_OVERRIDE_PROTOCOL *EdidOverride; + UINT32 EdidAttributes; + BOOLEAN EdidOverrideFound; + UINTN EdidOverrideDataSize; + UINT8 *EdidOverrideDataBlock; + UINTN EdidDiscoveredDataSize; + UINT8 *EdidDiscoveredDataBlock; + UINTN EdidActiveDataSize; + UINT8 *EdidActiveDataBlock; + VALID_EDID_TIMING ValidEdidTiming; + UINT32 ValidModeCount; + VBOX_VGA_MODE_DATA *ModeData; + BOOLEAN TimingMatch; + const VBOX_VGA_VIDEO_MODES *VideoMode; + EDID_TIMING TempTiming; + + // + // setup EDID information + // + Private->EdidDiscovered.Edid = NULL; + Private->EdidDiscovered.SizeOfEdid = 0; + Private->EdidActive.Edid = NULL; + Private->EdidActive.SizeOfEdid = 0; + + EdidFound = FALSE; + EdidOverrideFound = FALSE; + EdidAttributes = 0xff; + EdidOverrideDataSize = 0; + EdidOverrideDataBlock = NULL; + EdidActiveDataSize = 0; + EdidActiveDataBlock = NULL; + EdidDiscoveredDataBlock = NULL; + + // + // Find EDID Override protocol firstly, this protocol is installed by platform if needed. + // + Status = gBS->LocateProtocol ( + &gEfiEdidOverrideProtocolGuid, + NULL, + (VOID **) &EdidOverride + ); + if (!EFI_ERROR (Status)) { + // + // Allocate double size of VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE to avoid overflow + // + EdidOverrideDataBlock = AllocatePool (sizeof (EDID_BLOCK_SIZE * 2)); + if (NULL == EdidOverrideDataBlock) { + Status = EFI_OUT_OF_RESOURCES; + goto Done; + } + + Status = EdidOverride->GetEdid ( + EdidOverride, + Private->Handle, + &EdidAttributes, + &EdidOverrideDataSize, + (UINT8 **) &EdidOverrideDataBlock + ); + if (!EFI_ERROR (Status) && + EdidAttributes == 0 && + EdidOverrideDataSize != 0) { + // + // Succeeded to get EDID Override Data + // + EdidOverrideFound = TRUE; + } + } + + if (EdidOverrideFound != TRUE || EdidAttributes == EFI_EDID_OVERRIDE_DONT_OVERRIDE) { + // + // If EDID Override data doesn't exist or EFI_EDID_OVERRIDE_DONT_OVERRIDE returned, + // read EDID information through I2C Bus + // + if (ReadEdidData (Private, &EdidDiscoveredDataBlock, &EdidDiscoveredDataSize) == EFI_SUCCESS) { + Private->EdidDiscovered.SizeOfEdid = (UINT32) EdidDiscoveredDataSize; + Private->EdidDiscovered.Edid = (UINT8 *) AllocateCopyPool ( + EdidDiscoveredDataSize, + EdidDiscoveredDataBlock + ); + + if (NULL == Private->EdidDiscovered.Edid) { + Status = EFI_OUT_OF_RESOURCES; + goto Done; + } + + EdidActiveDataSize = Private->EdidDiscovered.SizeOfEdid; + EdidActiveDataBlock = Private->EdidDiscovered.Edid; + + EdidFound = TRUE; + } + } + + if (EdidFound != TRUE && EdidOverrideFound == TRUE) { + EdidActiveDataSize = EdidOverrideDataSize; + EdidActiveDataBlock = EdidOverrideDataBlock; + EdidFound = TRUE; + } + + if (EdidFound == TRUE) { + // + // Parse EDID data structure to retrieve modes supported by monitor + // + if (ParseEdidData ((UINT8 *) EdidActiveDataBlock, &ValidEdidTiming) == TRUE) { + // + // Copy EDID Override Data to EDID Active Data + // + Private->EdidActive.SizeOfEdid = (UINT32) EdidActiveDataSize; + Private->EdidActive.Edid = (UINT8 *) AllocateCopyPool ( + EdidActiveDataSize, + EdidActiveDataBlock + ); + if (NULL == Private->EdidActive.Edid) { + Status = EFI_OUT_OF_RESOURCES; + goto Done; + } + } + } else { + Private->EdidActive.SizeOfEdid = 0; + Private->EdidActive.Edid = NULL; + EdidFound = FALSE; + } + + if (EdidFound && 0) { + // + // Initialize the private mode data with the supported modes. + // + ValidModeCount = 0; + Private->ModeData = AllocatePool(sizeof(VBOX_VGA_MODE_DATA) * VBoxVgaVideoModeCount); + ModeData = &Private->ModeData[0]; + VideoMode = &VBoxVgaVideoModes[0]; + for (Index = 0; Index < VBoxVgaVideoModeCount; Index++) { + + TimingMatch = TRUE; + + // + // Check whether match with VBoxVga video mode + // + TempTiming.HorizontalResolution = (UINT16) VideoMode->Width; + TempTiming.VerticalResolution = (UINT16) VideoMode->Height; + TempTiming.RefreshRate = (UINT16) VideoMode->RefreshRate; + if (SearchEdidTiming (&ValidEdidTiming, &TempTiming) != TRUE) { + TimingMatch = FALSE; + } + + // + // Not export Mode 0x0 as GOP mode, this is not defined in spec. + // + if ((VideoMode->Width == 0) || (VideoMode->Height == 0)) { + TimingMatch = FALSE; + } + + // + // Check whether the mode would be exceeding the VRAM size. + // + if (VideoMode->Width * VideoMode->Height * (VideoMode->ColorDepth / 8) > Private->VRAMSize) { + TimingMatch = FALSE; + } + + if (TimingMatch) { + ModeData->ModeNumber = Index; + ModeData->HorizontalResolution = VideoMode->Width; + ModeData->VerticalResolution = VideoMode->Height; + ModeData->ColorDepth = VideoMode->ColorDepth; + ModeData->RefreshRate = VideoMode->RefreshRate; + + ModeData ++; + ValidModeCount ++; + } + + VideoMode ++; + } + } else { + // + // If EDID information wasn't found + // + VBoxVgaVideoModeInitExtra(); + ValidModeCount = 0; + Private->ModeData = AllocatePool(sizeof(VBOX_VGA_MODE_DATA) * VBoxVgaVideoModeCount); + ModeData = &Private->ModeData[0]; + VideoMode = &VBoxVgaVideoModes[0]; + for (Index = 0; Index < VBoxVgaVideoModeCount; Index ++) { + + TimingMatch = TRUE; + + // + // Not export Mode 0x0 as GOP mode, this is not defined in spec. + // + if ((VideoMode->Width == 0) || (VideoMode->Height == 0)) { + TimingMatch = FALSE; + } + + // + // Check whether the mode would be exceeding the VRAM size. + // + if (VideoMode->Width * VideoMode->Height * (VideoMode->ColorDepth / 8) > Private->VRAMSize) { + TimingMatch = FALSE; + } + + if (TimingMatch) { + ModeData->ModeNumber = Index; + ModeData->HorizontalResolution = VideoMode->Width; + ModeData->VerticalResolution = VideoMode->Height; + ModeData->ColorDepth = VideoMode->ColorDepth; + ModeData->RefreshRate = VideoMode->RefreshRate; + + ModeData ++; + ValidModeCount ++; + } + + VideoMode ++; + } + } + + // Sort list of video modes (keeping duplicates) by increasing X, then Y, + // then the mode number. This way the custom modes are not overriding the + // default modes if they are for the same resolution. + ModeData = &Private->ModeData[0]; + for (Index = 0; Index < ValidModeCount - 1; Index ++) { + UINT32 Index2; + VBOX_VGA_MODE_DATA *ModeData2 = ModeData + 1; + for (Index2 = Index + 1; Index2 < ValidModeCount; Index2 ++) { + if ( ModeData->HorizontalResolution > ModeData2->HorizontalResolution + || ( ModeData->HorizontalResolution == ModeData2->HorizontalResolution + && ModeData->VerticalResolution > ModeData2->VerticalResolution) + || ( ModeData->HorizontalResolution == ModeData2->HorizontalResolution + && ModeData->VerticalResolution == ModeData2->VerticalResolution + && ModeData->ModeNumber > ModeData2->ModeNumber)) { + VBOX_VGA_MODE_DATA Tmp; + CopyMem(&Tmp, ModeData, sizeof(Tmp)); + CopyMem(ModeData, ModeData2, sizeof(Tmp)); + CopyMem(ModeData2, &Tmp, sizeof(Tmp)); + DEBUG((DEBUG_INFO, "%a:%d swapped mode entries %d and %d\n", __FILE__, __LINE__, Index, Index2)); + } + ModeData2++; + } + ModeData++; + } + + // dump mode list for debugging purposes + ModeData = &Private->ModeData[0]; + for (Index = 0; Index < ValidModeCount; Index ++) { + DEBUG((DEBUG_INFO, "%a:%d mode %d: %dx%d mode number %d\n", __FILE__, __LINE__, Index, ModeData->HorizontalResolution, ModeData->VerticalResolution, ModeData->ModeNumber)); + ModeData++; + } + + Private->MaxMode = ValidModeCount; + + if (EdidOverrideDataBlock != NULL) { + FreePool (EdidOverrideDataBlock); + } + + return EFI_SUCCESS; + +Done: + if (EdidOverrideDataBlock != NULL) { + FreePool (EdidOverrideDataBlock); + } + if (Private->EdidDiscovered.Edid != NULL) { + FreePool (Private->EdidDiscovered.Edid); + } + if (Private->EdidDiscovered.Edid != NULL) { + FreePool (Private->EdidActive.Edid); + } + + return EFI_DEVICE_ERROR; +} |