/** @file\r
PCI Rom supporting funtions implementation for PCI Bus module.\r
\r
-Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
UINT32 ScratchSize;\r
VOID *Scratch;\r
EFI_DECOMPRESS_PROTOCOL *Decompress;\r
+ UINT32 InitializationSize;\r
\r
EfiOpRomImageNode = (MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *) FilePath;\r
if ((EfiOpRomImageNode == NULL) ||\r
\r
\r
Pcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) EfiRomHeader + EfiRomHeader->PcirOffset);\r
-\r
+ ASSERT (Pcir->Signature == PCI_DATA_STRUCTURE_SIGNATURE);\r
\r
if ((Pcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) &&\r
(EfiRomHeader->EfiSignature == EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE) &&\r
(EfiRomHeader->CompressionType <= EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED)\r
) {\r
\r
- ImageSize = (UINT32) EfiRomHeader->InitializationSize * 512;\r
+ ImageSize = Pcir->ImageLength * 512;\r
+ InitializationSize = (UINT32) EfiRomHeader->InitializationSize * 512;\r
+ if (InitializationSize > ImageSize || EfiRomHeader->EfiImageHeaderOffset >= InitializationSize) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
ImageBuffer = (UINT8 *) EfiRomHeader + EfiRomHeader->EfiImageHeaderOffset;\r
- ImageLength = ImageSize - EfiRomHeader->EfiImageHeaderOffset;\r
+ ImageLength = InitializationSize - EfiRomHeader->EfiImageHeaderOffset;\r
\r
if (EfiRomHeader->CompressionType != EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED) {\r
//\r
return EFI_NOT_FOUND;\r
}\r
\r
- PciIoDevice->RomSize = (UINT64) ((~AllOnes) + 1);\r
+ PciIoDevice->RomSize = (~AllOnes) + 1;\r
return EFI_SUCCESS;\r
}\r
\r
{\r
PCI_EXPANSION_ROM_HEADER *RomHeader;\r
PCI_DATA_STRUCTURE *RomPcir;\r
- BOOLEAN FirstCheck;\r
+ UINT8 Indicator;\r
\r
- FirstCheck = TRUE;\r
- RomHeader = RomImage;\r
+ Indicator = 0;\r
+ RomHeader = RomImage;\r
+ if (RomHeader == NULL) {\r
+ return FALSE;\r
+ }\r
\r
- while ((UINT8 *) RomHeader < (UINT8 *) RomImage + RomSize) {\r
+ do {\r
if (RomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r
- if (FirstCheck) {\r
- return FALSE;\r
- } else {\r
- RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + 512);\r
- continue;\r
- }\r
+ RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + 512);\r
+ continue;\r
}\r
\r
- FirstCheck = FALSE;\r
- RomPcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) RomHeader + RomHeader->PcirOffset);\r
+ //\r
+ // The PCI Data Structure must be DWORD aligned.\r
+ //\r
+ if (RomHeader->PcirOffset == 0 ||\r
+ (RomHeader->PcirOffset & 3) != 0 ||\r
+ (UINT8 *) RomHeader + RomHeader->PcirOffset + sizeof (PCI_DATA_STRUCTURE) > (UINT8 *) RomImage + RomSize) {\r
+ break;\r
+ }\r
+\r
+ RomPcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) RomHeader + RomHeader->PcirOffset);\r
+ if (RomPcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {\r
+ break;\r
+ }\r
\r
if (RomPcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) {\r
return TRUE;\r
}\r
\r
- RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + RomPcir->Length * 512);\r
- }\r
+ Indicator = RomPcir->Indicator;\r
+ RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + RomPcir->ImageLength * 512);\r
+ } while (((UINT8 *) RomHeader < (UINT8 *) RomImage + RomSize) && ((Indicator & 0x80) == 0x00));\r
\r
return FALSE;\r
}\r
\r
-\r
/**\r
Load Option Rom image for specified PCI device.\r
\r
PCI_DATA_STRUCTURE *RomPcir;\r
UINT64 RomSize;\r
UINT64 RomImageSize;\r
+ UINT32 LegacyImageLength;\r
UINT8 *RomInMemory;\r
UINT8 CodeType;\r
\r
RomBarOffset = RomBar;\r
RetStatus = EFI_NOT_FOUND;\r
FirstCheck = TRUE;\r
+ LegacyImageLength = 0;\r
\r
do {\r
PciDevice->PciRootBridgeIo->Mem.Read (\r
\r
FirstCheck = FALSE;\r
OffsetPcir = RomHeader->PcirOffset;\r
+ //\r
+ // If the pointer to the PCI Data Structure is invalid, no further images can be located.\r
+ // The PCI Data Structure must be DWORD aligned.\r
+ //\r
+ if (OffsetPcir == 0 ||\r
+ (OffsetPcir & 3) != 0 ||\r
+ RomImageSize + OffsetPcir + sizeof (PCI_DATA_STRUCTURE) > RomSize) {\r
+ break;\r
+ }\r
PciDevice->PciRootBridgeIo->Mem.Read (\r
PciDevice->PciRootBridgeIo,\r
EfiPciWidthUint8,\r
sizeof (PCI_DATA_STRUCTURE),\r
(UINT8 *) RomPcir\r
);\r
+ //\r
+ // If a valid signature is not present in the PCI Data Structure, no further images can be located.\r
+ //\r
+ if (RomPcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {\r
+ break;\r
+ }\r
+ if (RomImageSize + RomPcir->ImageLength * 512 > RomSize) {\r
+ break;\r
+ }\r
if (RomPcir->CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {\r
CodeType = PCI_CODE_TYPE_PCAT_IMAGE;\r
+ LegacyImageLength = ((UINT32)((EFI_LEGACY_EXPANSION_ROM_HEADER *)RomHeader)->Size512) * 512;\r
}\r
Indicator = RomPcir->Indicator;\r
RomImageSize = RomImageSize + RomPcir->ImageLength * 512;\r
// of the legacy length and the PCIR Image Length\r
//\r
if (CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {\r
- RomImageSize = MAX(RomImageSize, (((EFI_LEGACY_EXPANSION_ROM_HEADER *)RomHeader)->Size512 * 512));\r
+ RomImageSize = MAX (RomImageSize, LegacyImageLength);\r
}\r
\r
if (RomImageSize > 0) {\r
PciDevice->BusNumber,\r
PciDevice->DeviceNumber,\r
PciDevice->FunctionNumber,\r
- (UINT64) (UINTN) PciDevice->PciIo.RomImage,\r
+ PciDevice->PciIo.RomImage,\r
PciDevice->PciIo.RomSize\r
);\r
\r
)\r
{\r
UINT32 Value32;\r
- UINT32 Offset;\r
- UINT32 OffsetMax;\r
EFI_PCI_IO_PROTOCOL *PciIo;\r
\r
PciIo = &PciDevice->PciIo;\r
if (Enable) {\r
- //\r
- // Clear all bars\r
- //\r
- OffsetMax = 0x24;\r
- if (IS_PCI_BRIDGE(&PciDevice->Pci)) {\r
- OffsetMax = 0x14;\r
- }\r
-\r
- for (Offset = 0x10; Offset <= OffsetMax; Offset += sizeof (UINT32)) {\r
- PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, Offset, 1, &gAllZero);\r
- }\r
\r
//\r
// set the Rom base address: now is hardcode\r
//\r
// Programe all upstream bridge\r
//\r
- ProgrameUpstreamBridgeForRom(PciDevice, RomBar, TRUE);\r
+ ProgramUpstreamBridgeForRom (PciDevice, RomBar, TRUE);\r
\r
//\r
// Setting the memory space bit in the function's command register\r
//\r
// Destroy the programmed bar in all the upstream bridge.\r
//\r
- ProgrameUpstreamBridgeForRom(PciDevice, RomBar, FALSE);\r
+ ProgramUpstreamBridgeForRom (PciDevice, RomBar, FALSE);\r
\r
//\r
// disable rom decode\r
EFI_HANDLE ImageHandle;\r
EFI_STATUS Status;\r
EFI_STATUS RetStatus;\r
- BOOLEAN FirstCheck;\r
EFI_PCI_EXPANSION_ROM_HEADER *EfiRomHeader;\r
PCI_DATA_STRUCTURE *Pcir;\r
EFI_DEVICE_PATH_PROTOCOL *PciOptionRomImageDevicePath;\r
RomBar = PciDevice->PciIo.RomImage;\r
RomBarOffset = (UINT8 *) RomBar;\r
RetStatus = EFI_NOT_FOUND;\r
- FirstCheck = TRUE;\r
+\r
+ if (RomBar == NULL) {\r
+ return RetStatus;\r
+ }\r
+ ASSERT (((EFI_PCI_EXPANSION_ROM_HEADER *) RomBarOffset)->Signature == PCI_EXPANSION_ROM_HEADER_SIGNATURE);\r
\r
do {\r
EfiRomHeader = (EFI_PCI_EXPANSION_ROM_HEADER *) RomBarOffset;\r
if (EfiRomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r
RomBarOffset += 512;\r
- if (FirstCheck) {\r
- break;\r
- } else {\r
- continue;\r
- }\r
+ continue;\r
}\r
\r
- FirstCheck = FALSE;\r
Pcir = (PCI_DATA_STRUCTURE *) (RomBarOffset + EfiRomHeader->PcirOffset);\r
+ ASSERT (Pcir->Signature == PCI_DATA_STRUCTURE_SIGNATURE);\r
ImageSize = (UINT32) (Pcir->ImageLength * 512);\r
Indicator = Pcir->Indicator;\r
\r
+ //\r
+ // Skip the image if it is not an EFI PCI Option ROM image\r
+ //\r
+ if (Pcir->CodeType != PCI_CODE_TYPE_EFI_IMAGE) {\r
+ goto NextImage;\r
+ }\r
+\r
+ //\r
+ // Skip the EFI PCI Option ROM image if its machine type is not supported\r
+ //\r
+ if (!EFI_IMAGE_MACHINE_TYPE_SUPPORTED (EfiRomHeader->EfiMachineType)) {\r
+ goto NextImage;\r
+ }\r
+\r
+ //\r
+ // Ignore the EFI PCI Option ROM image if it is an EFI application\r
+ //\r
+ if (EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION) {\r
+ goto NextImage;\r
+ }\r
+\r
//\r
// Create Pci Option Rom Image device path header\r
//\r
//\r
BufferSize = 0;\r
Buffer = NULL;\r
- Status = EFI_SUCCESS;\r
ImageHandle = NULL;\r
\r
- if (!EFI_ERROR (Status)) {\r
- Status = gBS->LoadImage (\r
- FALSE,\r
- gPciBusDriverBinding.DriverBindingHandle,\r
- PciOptionRomImageDevicePath,\r
- Buffer,\r
- BufferSize,\r
- &ImageHandle\r
- );\r
- }\r
-\r
- FreePool (PciOptionRomImageDevicePath);\r
-\r
- if (!EFI_ERROR (Status)) {\r
+ Status = gBS->LoadImage (\r
+ FALSE,\r
+ gPciBusDriverBinding.DriverBindingHandle,\r
+ PciOptionRomImageDevicePath,\r
+ Buffer,\r
+ BufferSize,\r
+ &ImageHandle\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // Record the Option ROM Image device path when LoadImage fails.\r
+ // PciOverride.GetDriver() will try to look for the Image Handle using the device path later.\r
+ //\r
+ AddDriver (PciDevice, NULL, PciOptionRomImageDevicePath);\r
+ } else {\r
Status = gBS->StartImage (ImageHandle, NULL, NULL);\r
if (!EFI_ERROR (Status)) {\r
- AddDriver (PciDevice, ImageHandle);\r
+ //\r
+ // Record the Option ROM Image Handle\r
+ //\r
+ AddDriver (PciDevice, ImageHandle, NULL);\r
PciRomAddImageMapping (\r
ImageHandle,\r
PciDevice->PciRootBridgeIo->SegmentNumber,\r
PciDevice->BusNumber,\r
PciDevice->DeviceNumber,\r
PciDevice->FunctionNumber,\r
- (UINT64) (UINTN) PciDevice->PciIo.RomImage,\r
+ PciDevice->PciIo.RomImage,\r
PciDevice->PciIo.RomSize\r
);\r
RetStatus = EFI_SUCCESS;\r
}\r
}\r
+ FreePool (PciOptionRomImageDevicePath);\r
\r
+NextImage:\r
RomBarOffset += ImageSize;\r
\r
- } while (((Indicator & 0x80) == 0x00) && ((UINTN) (RomBarOffset - (UINT8 *) RomBar) < PciDevice->RomSize));\r
+ } while (((Indicator & 0x80) == 0x00) && (((UINTN) RomBarOffset - (UINTN) RomBar) < PciDevice->RomSize));\r
\r
return RetStatus;\r
}\r
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