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mu_tiano_platforms
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OvmfPkg BDS: Remove support for loading vgabios-cirrus.bin from 0xc0000 

Older QEMU versions would load vgabios-cirrus.bin at 0xc0000 in
system RAM. We would then find this ROM, and try to run it, since
it would be our QEMU Video driver.

Now, the QEMU Video driver is just merged into the main OVMF
firmware image, so this support is unused.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13522 6f19259b-4bc3-4df7-8a09-765794883524
MU SOURCE COMMIT:41d3576849fc55ce15358d674796e380a687c0ca
This commit is contained in:
jljusten 2012-07-10 22:43:42 +00:00 коммит произвёл Matthew Carlson
Родитель b4ffb45198
Коммит 5329c3c043
1 изменённых файлов: 0 добавлений и 206 удалений
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206
Platforms/OvmfPkg/Library/PlatformBdsLib/BdsPlatform.c
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@ -73,19 +73,6 @@ InstallDevicePathCallback (
VOID
);
STATIC
VOID
LoadVideoRom (
VOID
);
STATIC
EFI_STATUS
PciRomLoadEfiDriversFromRomImage (
IN EFI_PHYSICAL_ADDRESS Rom,
IN UINTN RomSize
);
//
// BDS Platform Functions
//
@ -111,7 +98,6 @@ Returns:
{
DEBUG ((EFI_D_INFO, "PlatformBdsInit\n"));
InstallDevicePathCallback ();
LoadVideoRom ();
}
@ -1455,195 +1441,3 @@ LockKeyboards (
return EFI_UNSUPPORTED;
}
STATIC
VOID
LoadVideoRom (
VOID
)
{
PCI_DATA_STRUCTURE *Pcir;
UINTN RomSize;
//
// The virtual machines sometimes load the video rom image
// directly at the legacy video BIOS location of C000:0000,
// and do not implement the PCI expansion ROM feature.
//
Pcir = (PCI_DATA_STRUCTURE *) (UINTN) 0xc0000;
RomSize = Pcir->ImageLength * 512;
PciRomLoadEfiDriversFromRomImage (0xc0000, RomSize);
}
STATIC
EFI_STATUS
PciRomLoadEfiDriversFromRomImage (
IN EFI_PHYSICAL_ADDRESS Rom,
IN UINTN RomSize
)
{
CHAR16 *FileName;
EFI_PCI_EXPANSION_ROM_HEADER *EfiRomHeader;
PCI_DATA_STRUCTURE *Pcir;
UINTN ImageIndex;
UINTN RomOffset;
UINT32 ImageSize;
UINT16 ImageOffset;
EFI_HANDLE ImageHandle;
EFI_STATUS Status;
EFI_STATUS retStatus;
EFI_DEVICE_PATH_PROTOCOL *FilePath;
BOOLEAN SkipImage;
UINT32 DestinationSize;
UINT32 ScratchSize;
UINT8 *Scratch;
VOID *ImageBuffer;
VOID *DecompressedImageBuffer;
UINT32 ImageLength;
EFI_DECOMPRESS_PROTOCOL *Decompress;
UINT32 InitializationSize;
FileName = L"PciRomInMemory";
//FileName = L"PciRom Addr=0000000000000000";
//HexToString (&FileName[12], Rom, 16);
ImageIndex = 0;
retStatus = EFI_NOT_FOUND;
RomOffset = (UINTN) Rom;
do {
EfiRomHeader = (EFI_PCI_EXPANSION_ROM_HEADER *) (UINTN) RomOffset;
if (EfiRomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
return retStatus;
}
//
// If the pointer to the PCI Data Structure is invalid, no further images can be located.
// The PCI Data Structure must be DWORD aligned.
//
if (EfiRomHeader->PcirOffset == 0 ||
(EfiRomHeader->PcirOffset & 3) != 0 ||
RomOffset - (UINTN)Rom + EfiRomHeader->PcirOffset + sizeof (PCI_DATA_STRUCTURE) > RomSize) {
break;
}
Pcir = (PCI_DATA_STRUCTURE *) (UINTN) (RomOffset + EfiRomHeader->PcirOffset);
//
// If a valid signature is not present in the PCI Data Structure, no further images can be located.
//
if (Pcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {
break;
}
ImageSize = Pcir->ImageLength * 512;
if (RomOffset - (UINTN)Rom + ImageSize > RomSize) {
break;
}
if ((Pcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) &&
(EfiRomHeader->EfiSignature == EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE) &&
((EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER) ||
(EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER))) {
ImageOffset = EfiRomHeader->EfiImageHeaderOffset;
InitializationSize = EfiRomHeader->InitializationSize * 512;
if (InitializationSize <= ImageSize && ImageOffset < InitializationSize) {
ImageBuffer = (VOID *) (UINTN) (RomOffset + ImageOffset);
ImageLength = InitializationSize - ImageOffset;
DecompressedImageBuffer = NULL;
//
// decompress here if needed
//
SkipImage = FALSE;
if (EfiRomHeader->CompressionType > EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED) {
SkipImage = TRUE;
}
if (EfiRomHeader->CompressionType == EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED) {
Status = gBS->LocateProtocol (&gEfiDecompressProtocolGuid, NULL, (VOID **) &Decompress);
if (EFI_ERROR (Status)) {
SkipImage = TRUE;
} else {
SkipImage = TRUE;
Status = Decompress->GetInfo (
Decompress,
ImageBuffer,
ImageLength,
&DestinationSize,
&ScratchSize
);
if (!EFI_ERROR (Status)) {
DecompressedImageBuffer = NULL;
DecompressedImageBuffer = AllocatePool (DestinationSize);
if (DecompressedImageBuffer != NULL) {
Scratch = AllocatePool (ScratchSize);
if (Scratch != NULL) {
Status = Decompress->Decompress (
Decompress,
ImageBuffer,
ImageLength,
DecompressedImageBuffer,
DestinationSize,
Scratch,
ScratchSize
);
if (!EFI_ERROR (Status)) {
ImageBuffer = DecompressedImageBuffer;
ImageLength = DestinationSize;
SkipImage = FALSE;
}
gBS->FreePool (Scratch);
}
}
}
}
}
if (!SkipImage) {
//
// load image and start image
//
FilePath = FileDevicePath (NULL, FileName);
Status = gBS->LoadImage (
FALSE,
gImageHandle,
FilePath,
ImageBuffer,
ImageLength,
&ImageHandle
);
if (!EFI_ERROR (Status)) {
Status = gBS->StartImage (ImageHandle, NULL, NULL);
if (!EFI_ERROR (Status)) {
retStatus = Status;
}
}
if (FilePath != NULL) {
gBS->FreePool (FilePath);
}
}
if (DecompressedImageBuffer != NULL) {
gBS->FreePool (DecompressedImageBuffer);
}
}
}
RomOffset = RomOffset + ImageSize;
ImageIndex++;
} while (((Pcir->Indicator & 0x80) == 0x00) && ((RomOffset - (UINTN) Rom) < RomSize));
return retStatus;
}