mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-30 12:43:41 +01:00
396 lines
13 KiB
C
396 lines
13 KiB
C
/*++
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Copyright (c) 2005 - 2012, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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PciRomTable.c
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Abstract:
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Option Rom Support for PCI Bus Driver
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Revision History
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--*/
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#include <IndustryStandard/PciBus.h>
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#include "PciEnumeratorSupport.h"
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#include "PciDriverOverride.h"
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typedef struct {
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EFI_HANDLE ImageHandle;
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UINTN Seg;
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UINT8 Bus;
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UINT8 Dev;
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UINT8 Func;
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} EFI_PCI_ROM_IMAGE_MAPPING;
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UINTN mNumberOfPciRomImages = 0;
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UINTN mMaxNumberOfPciRomImages = 0;
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EFI_PCI_ROM_IMAGE_MAPPING *mRomImageTable = NULL;
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CHAR16 mHexDigit[17] = L"0123456789ABCDEF";
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VOID
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PciRomAddImageMapping (
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IN EFI_HANDLE ImageHandle,
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IN UINTN Seg,
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IN UINT8 Bus,
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IN UINT8 Dev,
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IN UINT8 Func
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)
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{
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EFI_PCI_ROM_IMAGE_MAPPING *TempMapping;
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if (mNumberOfPciRomImages >= mMaxNumberOfPciRomImages) {
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mMaxNumberOfPciRomImages += 0x20;
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// TempMapping = NULL;
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TempMapping = AllocatePool (mMaxNumberOfPciRomImages * sizeof (EFI_PCI_ROM_IMAGE_MAPPING));
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if (TempMapping == NULL) {
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return ;
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}
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CopyMem (TempMapping, mRomImageTable, mNumberOfPciRomImages * sizeof (EFI_PCI_ROM_IMAGE_MAPPING));
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if (mRomImageTable != NULL) {
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gBS->FreePool (mRomImageTable);
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}
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mRomImageTable = TempMapping;
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}
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mRomImageTable[mNumberOfPciRomImages].ImageHandle = ImageHandle;
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mRomImageTable[mNumberOfPciRomImages].Seg = Seg;
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mRomImageTable[mNumberOfPciRomImages].Bus = Bus;
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mRomImageTable[mNumberOfPciRomImages].Dev = Dev;
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mRomImageTable[mNumberOfPciRomImages].Func = Func;
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mNumberOfPciRomImages++;
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}
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VOID
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HexToString (
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CHAR16 *String,
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UINTN Value,
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UINTN Digits
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)
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{
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for (; Digits > 0; Digits--, String++) {
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*String = mHexDigit[((Value >> (4*(Digits-1))) & 0x0f)];
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}
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}
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EFI_STATUS
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PciRomLoadEfiDriversFromRomImage (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_PCI_OPTION_ROM_DESCRIPTOR *PciOptionRomDescriptor
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)
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/*++
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Routine Description:
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Command entry point.
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Arguments:
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ImageHandle The image handle.
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SystemTable The system table.
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Returns:
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EFI_SUCCESS - The command completed successfully
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EFI_INVALID_PARAMETER - Command usage error
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EFI_UNSUPPORTED - Protocols unsupported
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EFI_OUT_OF_RESOURCES - Out of memory
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Other value - Unknown error
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--*/
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{
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VOID *RomBar;
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UINTN RomSize;
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CHAR16 *FileName;
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EFI_PCI_EXPANSION_ROM_HEADER *EfiRomHeader;
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PCI_DATA_STRUCTURE *Pcir;
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UINTN ImageIndex;
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UINTN RomBarOffset;
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UINT32 ImageSize;
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UINT16 ImageOffset;
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EFI_HANDLE ImageHandle;
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EFI_STATUS Status;
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EFI_STATUS retStatus;
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EFI_DEVICE_PATH_PROTOCOL *FilePath;
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BOOLEAN SkipImage;
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UINT32 DestinationSize;
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UINT32 ScratchSize;
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UINT8 *Scratch;
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VOID *ImageBuffer;
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VOID *DecompressedImageBuffer;
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UINT32 ImageLength;
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EFI_DECOMPRESS_PROTOCOL *Decompress;
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UINT32 InitializationSize;
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RomBar = (VOID *) (UINTN) PciOptionRomDescriptor->RomAddress;
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RomSize = (UINTN) PciOptionRomDescriptor->RomLength;
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FileName = L"PciRom Seg=00000000 Bus=00 Dev=00 Func=00 Image=0000";
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HexToString (&FileName[11], PciOptionRomDescriptor->Seg, 8);
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HexToString (&FileName[24], PciOptionRomDescriptor->Bus, 2);
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HexToString (&FileName[31], PciOptionRomDescriptor->Dev, 2);
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HexToString (&FileName[39], PciOptionRomDescriptor->Func, 2);
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ImageIndex = 0;
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retStatus = EFI_NOT_FOUND;
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RomBarOffset = (UINTN) RomBar;
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do {
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EfiRomHeader = (EFI_PCI_EXPANSION_ROM_HEADER *) (UINTN) RomBarOffset;
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if (EfiRomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
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return retStatus;
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}
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//
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// If the pointer to the PCI Data Structure is invalid, no further images can be located.
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// The PCI Data Structure must be DWORD aligned.
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//
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if (EfiRomHeader->PcirOffset == 0 ||
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(EfiRomHeader->PcirOffset & 3) != 0 ||
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RomBarOffset - (UINTN)RomBar + EfiRomHeader->PcirOffset + sizeof (PCI_DATA_STRUCTURE) > RomSize) {
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break;
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}
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Pcir = (PCI_DATA_STRUCTURE *) (UINTN) (RomBarOffset + EfiRomHeader->PcirOffset);
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//
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// If a valid signature is not present in the PCI Data Structure, no further images can be located.
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//
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if (Pcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {
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break;
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}
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ImageSize = Pcir->ImageLength * 512;
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if (RomBarOffset - (UINTN)RomBar + ImageSize > RomSize) {
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break;
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}
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if ((Pcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) &&
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(EfiRomHeader->EfiSignature == EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE) &&
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((EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER) ||
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(EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER))) {
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ImageOffset = EfiRomHeader->EfiImageHeaderOffset;
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InitializationSize = EfiRomHeader->InitializationSize * 512;
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if (InitializationSize <= ImageSize && ImageOffset < InitializationSize) {
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ImageBuffer = (VOID *) (UINTN) (RomBarOffset + ImageOffset);
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ImageLength = InitializationSize - ImageOffset;
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DecompressedImageBuffer = NULL;
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//
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// decompress here if needed
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//
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SkipImage = FALSE;
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if (EfiRomHeader->CompressionType > EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED) {
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SkipImage = TRUE;
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}
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if (EfiRomHeader->CompressionType == EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED) {
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Status = gBS->LocateProtocol (&gEfiDecompressProtocolGuid, NULL, (VOID **) &Decompress);
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if (EFI_ERROR (Status)) {
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SkipImage = TRUE;
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} else {
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SkipImage = TRUE;
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Status = Decompress->GetInfo (
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Decompress,
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ImageBuffer,
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ImageLength,
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&DestinationSize,
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&ScratchSize
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);
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if (!EFI_ERROR (Status)) {
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// DecompressedImageBuffer = NULL;
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DecompressedImageBuffer = AllocatePool (DestinationSize);
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if (DecompressedImageBuffer != NULL) {
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Scratch = AllocatePool (ScratchSize);
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if (Scratch != NULL) {
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Status = Decompress->Decompress (
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Decompress,
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ImageBuffer,
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ImageLength,
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DecompressedImageBuffer,
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DestinationSize,
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Scratch,
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ScratchSize
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);
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if (!EFI_ERROR (Status)) {
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ImageBuffer = DecompressedImageBuffer;
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ImageLength = DestinationSize;
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SkipImage = FALSE;
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}
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gBS->FreePool (Scratch);
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}
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}
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}
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}
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}
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if (!SkipImage) {
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//
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// load image and start image
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//
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HexToString (&FileName[48], ImageIndex, 4);
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FilePath = FileDevicePath (NULL, FileName);
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Status = gBS->LoadImage (
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FALSE,
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This->ImageHandle,
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FilePath,
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ImageBuffer,
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ImageLength,
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&ImageHandle
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);
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if (!EFI_ERROR (Status)) {
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Status = gBS->StartImage (ImageHandle, NULL, NULL);
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if (!EFI_ERROR (Status)) {
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PciRomAddImageMapping (
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ImageHandle,
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PciOptionRomDescriptor->Seg,
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PciOptionRomDescriptor->Bus,
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PciOptionRomDescriptor->Dev,
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PciOptionRomDescriptor->Func
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);
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retStatus = Status;
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}
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}
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if (FilePath != NULL) {
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gBS->FreePool (FilePath);
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}
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}
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if (DecompressedImageBuffer != NULL) {
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gBS->FreePool (DecompressedImageBuffer);
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}
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}
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}
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RomBarOffset = RomBarOffset + ImageSize;
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ImageIndex++;
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} while (((Pcir->Indicator & 0x80) == 0x00) && ((RomBarOffset - (UINTN) RomBar) < RomSize));
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return retStatus;
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}
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EFI_STATUS
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PciRomLoadEfiDriversFromOptionRomTable (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo
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)
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/*++
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Routine Description:
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Arguments:
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Returns:
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--*/
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{
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EFI_STATUS Status;
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EFI_PCI_OPTION_ROM_TABLE *PciOptionRomTable;
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EFI_PCI_OPTION_ROM_DESCRIPTOR *PciOptionRomDescriptor;
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UINTN Index;
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EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptors;
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UINT16 MinBus;
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UINT16 MaxBus;
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Status = EfiGetSystemConfigurationTable (&gEfiPciOptionRomTableGuid, (VOID **) &PciOptionRomTable);
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if (EFI_ERROR (Status)) {
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return EFI_NOT_FOUND;
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}
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Status = EFI_NOT_FOUND;
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for (Index = 0; Index < PciOptionRomTable->PciOptionRomCount; Index++) {
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PciOptionRomDescriptor = &PciOptionRomTable->PciOptionRomDescriptors[Index];
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if (!PciOptionRomDescriptor->DontLoadEfiRom) {
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if (PciOptionRomDescriptor->Seg == PciRootBridgeIo->SegmentNumber) {
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Status = PciRootBridgeIo->Configuration (PciRootBridgeIo, (VOID **) &Descriptors);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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PciGetBusRange (&Descriptors, &MinBus, &MaxBus, NULL);
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if ((MinBus <= PciOptionRomDescriptor->Bus) && (PciOptionRomDescriptor->Bus <= MaxBus)) {
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Status = PciRomLoadEfiDriversFromRomImage (This, PciOptionRomDescriptor);
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PciOptionRomDescriptor->DontLoadEfiRom |= 2;
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}
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}
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}
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}
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return Status;
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}
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EFI_STATUS
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PciRomGetRomResourceFromPciOptionRomTable (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,
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PCI_IO_DEVICE *PciIoDevice
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)
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/*++
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Routine Description:
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Arguments:
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Returns:
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--*/
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{
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EFI_STATUS Status;
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EFI_PCI_OPTION_ROM_TABLE *PciOptionRomTable;
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EFI_PCI_OPTION_ROM_DESCRIPTOR *PciOptionRomDescriptor;
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UINTN Index;
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Status = EfiGetSystemConfigurationTable (&gEfiPciOptionRomTableGuid, (VOID **) &PciOptionRomTable);
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if (EFI_ERROR (Status)) {
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return EFI_NOT_FOUND;
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}
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for (Index = 0; Index < PciOptionRomTable->PciOptionRomCount; Index++) {
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PciOptionRomDescriptor = &PciOptionRomTable->PciOptionRomDescriptors[Index];
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if (PciOptionRomDescriptor->Seg == PciRootBridgeIo->SegmentNumber &&
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PciOptionRomDescriptor->Bus == PciIoDevice->BusNumber &&
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PciOptionRomDescriptor->Dev == PciIoDevice->DeviceNumber &&
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PciOptionRomDescriptor->Func == PciIoDevice->FunctionNumber ) {
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PciIoDevice->PciIo.RomImage = (VOID *) (UINTN) PciOptionRomDescriptor->RomAddress;
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PciIoDevice->PciIo.RomSize = (UINTN) PciOptionRomDescriptor->RomLength;
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}
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}
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for (Index = 0; Index < mNumberOfPciRomImages; Index++) {
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if (mRomImageTable[Index].Seg == PciRootBridgeIo->SegmentNumber &&
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mRomImageTable[Index].Bus == PciIoDevice->BusNumber &&
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mRomImageTable[Index].Dev == PciIoDevice->DeviceNumber &&
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mRomImageTable[Index].Func == PciIoDevice->FunctionNumber ) {
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AddDriver (PciIoDevice, mRomImageTable[Index].ImageHandle);
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}
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}
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return EFI_SUCCESS;
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}
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