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CorebootPayloadPkg/FbGop: Locate correct framebuffer device 

BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1628

Current FbGop driver might bind to the wrong PCI device
if a system has multiple PCI display devices. The original
idea was to reuse the generic GraphicsOutputDxe to address
this issue. However, after exploring different approaches
discussed in the bugzilla, it turned out that the best
approach is to enhance the current FbGop driver to match
the PCI device BAR value with the framebuffer base address.
This patch implemented this enhancement by selecting the
PCI device with matched framebuffer base in its PCI BAR.

This has been tested with coreboot on QEMU and Apollo Lake
platform.

Cc: Prince Agyeman <prince.agyeman@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Maurice Ma <maurice.ma@intel.com>
Reviewed-by: Benjamin You <benjamin.you@intel.com>
This commit is contained in:
Maurice Ma 2019-04-01 15:35:38 -07:00
parent a281361014
commit ae2fb9ead4
1 changed files with 129 additions and 113 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
CorebootPayloadPkg/FbGop/FbGop.c
View File

@ -16,7 +16,7 @@ EFI_PIXEL_BITMASK mPixelBitMask = {0x0000FF, 0x00FF00, 0xFF0000, 0x000000};
//
UINT64 mOriginalPciAttributes;
BOOLEAN mPciAttributesSaved = FALSE;
FRAME_BUFFER_INFO *mFrameBufferInfo;
//
// EFI Driver Binding Protocol Instance
@ -61,6 +61,8 @@ FbGopDriverBindingSupported (
EFI_PCI_IO_PROTOCOL *PciIo;
PCI_TYPE00 Pci;
EFI_DEV_PATH *Node;
UINT8 Index;
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Resources;
//
// Open the IO Abstraction(s) needed to perform the supported test
@ -94,12 +96,29 @@ FbGopDriverBindingSupported (
}
Status = EFI_UNSUPPORTED;
if (Pci.Hdr.ClassCode[2] == 0x03 || (Pci.Hdr.ClassCode[2] == 0x00 && Pci.Hdr.ClassCode[1] == 0x01)) {
if (IS_PCI_DISPLAY (&Pci) || IS_PCI_OLD_VGA (&Pci)) {
//
// Check if PCI BAR matches the framebuffer base
//
Status = EFI_UNSUPPORTED;
for (Index = 0; Index < PCI_MAX_BAR; Index++) {
Status = PciIo->GetBarAttributes (PciIo, Index, NULL, (VOID**) &Resources);
if (!EFI_ERROR (Status)) {
if ((Resources->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR) &&
(Resources->Len == (UINT16) (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) - 3)) &&
(Resources->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM) &&
(Resources->AddrRangeMin == mFrameBufferInfo->LinearFrameBuffer)) {
DEBUG ((DEBUG_INFO, "Found matched framebuffer PCI BAR !\n"));
Status = EFI_SUCCESS;
break;
}
}
}
if (!EFI_ERROR (Status)) {
//
// If this is a graphics controller,
// go further check RemainingDevicePath validation
// go further check RemainingDevicePath
//
if (RemainingDevicePath != NULL) {
Node = (EFI_DEV_PATH *) RemainingDevicePath;
@ -109,8 +128,7 @@ FbGopDriverBindingSupported (
//
if (!IsDevicePathEnd (Node)) {
//
// If RemainingDevicePath isn't the End of Device Path Node,
// check its validation
// Verify RemainingDevicePath
//
if (Node->DevPath.Type != ACPI_DEVICE_PATH ||
Node->DevPath.SubType != ACPI_ADR_DP ||
@ -120,6 +138,7 @@ FbGopDriverBindingSupported (
}
}
}
}
Done:
gBS->CloseProtocol (
@ -157,7 +176,7 @@ FbGopDriverBindingStart (
EFI_PCI_IO_PROTOCOL *PciIo;
UINT64 Supports;
DEBUG ((EFI_D_INFO, "GOP START\n"));
DEBUG ((DEBUG_INFO, "GOP START\n"));
//
// Initialize local variables
@ -544,7 +563,7 @@ FbGopChildHandleInstall (
// Check for VESA BIOS Extensions for modes that are compatible with Graphics Output
//
Status = FbGopCheckForVbe (FbGopPrivate);
DEBUG ((EFI_D_INFO, "FbGopCheckForVbe - %r\n", Status));
DEBUG ((DEBUG_INFO, "FbGopCheckForVbe - %r\n", Status));
if (EFI_ERROR (Status)) {
Status = EFI_UNSUPPORTED;
@ -794,16 +813,11 @@ FbGopCheckForVbe (
UINT32 HorizontalResolution;
UINT32 VerticalResolution;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *VbeFrameBuffer;
EFI_HOB_GUID_TYPE *GuidHob;
FRAME_BUFFER_INFO *pFbInfo;
FRAME_BUFFER_INFO *FbInfo;
Status = EFI_SUCCESS;
//
// Find the frame buffer information guid hob
//
GuidHob = GetFirstGuidHob (&gUefiFrameBufferInfoGuid);
ASSERT (GuidHob != NULL);
pFbInfo = (FRAME_BUFFER_INFO *)GET_GUID_HOB_DATA (GuidHob);
FbInfo = mFrameBufferInfo;
//
// Add mode to the list of available modes
@ -812,10 +826,10 @@ FbGopCheckForVbe (
ModeBuffer = NULL;
ModeNumber = 1;
BitsPerPixel = pFbInfo->BitsPerPixel;
HorizontalResolution = pFbInfo->HorizontalResolution;
VerticalResolution = pFbInfo->VerticalResolution;
BytesPerScanLine = pFbInfo->BytesPerScanLine;
BitsPerPixel = FbInfo->BitsPerPixel;
HorizontalResolution = FbInfo->HorizontalResolution;
VerticalResolution = FbInfo->VerticalResolution;
BytesPerScanLine = FbInfo->BytesPerScanLine;
ModeBuffer = (FB_VIDEO_MODE_DATA *) AllocatePool (
ModeNumber * sizeof (FB_VIDEO_MODE_DATA)
@ -845,16 +859,16 @@ FbGopCheckForVbe (
CurrentModeData = &ModeBuffer[ModeNumber - 1];
CurrentModeData->BytesPerScanLine = (UINT16)BytesPerScanLine;
CurrentModeData->Red = *(FB_VIDEO_COLOR_PLACEMENT *)&(pFbInfo->Red);
CurrentModeData->Blue = *(FB_VIDEO_COLOR_PLACEMENT *)&(pFbInfo->Blue);
CurrentModeData->Green = *(FB_VIDEO_COLOR_PLACEMENT *)&(pFbInfo->Green);
CurrentModeData->Reserved = *(FB_VIDEO_COLOR_PLACEMENT *)&(pFbInfo->Reserved);
CurrentModeData->Red = *(FB_VIDEO_COLOR_PLACEMENT *)&(FbInfo->Red);
CurrentModeData->Blue = *(FB_VIDEO_COLOR_PLACEMENT *)&(FbInfo->Blue);
CurrentModeData->Green = *(FB_VIDEO_COLOR_PLACEMENT *)&(FbInfo->Green);
CurrentModeData->Reserved = *(FB_VIDEO_COLOR_PLACEMENT *)&(FbInfo->Reserved);
CurrentModeData->BitsPerPixel = (UINT32)BitsPerPixel;
CurrentModeData->HorizontalResolution = HorizontalResolution;
CurrentModeData->VerticalResolution = VerticalResolution;
CurrentModeData->FrameBufferSize = CurrentModeData->BytesPerScanLine * CurrentModeData->VerticalResolution;
CurrentModeData->LinearFrameBuffer = (VOID *) (UINTN) pFbInfo->LinearFrameBuffer;
CurrentModeData->LinearFrameBuffer = (VOID *) (UINTN) FbInfo->LinearFrameBuffer;
CurrentModeData->VbeModeNumber = 0;
CurrentModeData->ColorDepth = 32;
CurrentModeData->RefreshRate = 60;
@ -1499,6 +1513,8 @@ FbGopEntryPoint(
//
GuidHob = GetFirstGuidHob (&gUefiFrameBufferInfoGuid);
if (GuidHob != NULL) {
mFrameBufferInfo = (FRAME_BUFFER_INFO *)GET_GUID_HOB_DATA (GuidHob);
//
// Install driver model protocol(s).
//
@ -1512,7 +1528,7 @@ FbGopEntryPoint(
);
ASSERT_EFI_ERROR (Status);
} else {
DEBUG ((EFI_D_ERROR, "No FrameBuffer information from coreboot. NO GOP driver !!!\n"));
DEBUG ((DEBUG_ERROR, "No FrameBuffer information from coreboot. NO GOP driver !!!\n"));
Status = EFI_ABORTED;
}
return Status;