diff options
Diffstat (limited to 'MdeModulePkg/Bus/Pci/PciBusDxe/PciRomTable.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/PciBusDxe/PciRomTable.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciRomTable.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciRomTable.c new file mode 100644 index 0000000000..9addcf920a --- /dev/null +++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciRomTable.c @@ -0,0 +1,126 @@ +/** @file
+ Set up ROM Table for PCI Bus module.
+
+Copyright (c) 2006 - 2009, 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 "PciBus.h"
+
+//
+// PCI ROM image information
+//
+typedef struct {
+ EFI_HANDLE ImageHandle;
+ UINTN Seg;
+ UINT8 Bus;
+ UINT8 Dev;
+ UINT8 Func;
+ UINT64 RomAddress;
+ UINT64 RomLength;
+} EFI_PCI_ROM_IMAGE_MAPPING;
+
+UINTN mNumberOfPciRomImages = 0;
+UINTN mMaxNumberOfPciRomImages = 0;
+EFI_PCI_ROM_IMAGE_MAPPING *mRomImageTable = NULL;
+
+/**
+ Add the Rom Image to internal database for later PCI light enumeration.
+
+ @param ImageHandle Option Rom image handle.
+ @param Seg Segment of PCI space.
+ @param Bus Bus NO of PCI space.
+ @param Dev Dev NO of PCI space.
+ @param Func Func NO of PCI space.
+ @param RomAddress Base address of OptionRom.
+ @param RomLength Length of rom image.
+
+**/
+VOID
+PciRomAddImageMapping (
+ IN EFI_HANDLE ImageHandle,
+ IN UINTN Seg,
+ IN UINT8 Bus,
+ IN UINT8 Dev,
+ IN UINT8 Func,
+ IN UINT64 RomAddress,
+ IN UINT64 RomLength
+ )
+{
+ EFI_PCI_ROM_IMAGE_MAPPING *TempMapping;
+
+ if (mNumberOfPciRomImages >= mMaxNumberOfPciRomImages) {
+
+ mMaxNumberOfPciRomImages += 0x20;
+
+ TempMapping = NULL;
+ TempMapping = AllocatePool (mMaxNumberOfPciRomImages * sizeof (EFI_PCI_ROM_IMAGE_MAPPING));
+ if (TempMapping == NULL) {
+ return ;
+ }
+
+ CopyMem (TempMapping, mRomImageTable, mNumberOfPciRomImages * sizeof (EFI_PCI_ROM_IMAGE_MAPPING));
+
+ if (mRomImageTable != NULL) {
+ FreePool (mRomImageTable);
+ }
+
+ mRomImageTable = TempMapping;
+ }
+
+ mRomImageTable[mNumberOfPciRomImages].ImageHandle = ImageHandle;
+ mRomImageTable[mNumberOfPciRomImages].Seg = Seg;
+ mRomImageTable[mNumberOfPciRomImages].Bus = Bus;
+ mRomImageTable[mNumberOfPciRomImages].Dev = Dev;
+ mRomImageTable[mNumberOfPciRomImages].Func = Func;
+ mRomImageTable[mNumberOfPciRomImages].RomAddress = RomAddress;
+ mRomImageTable[mNumberOfPciRomImages].RomLength = RomLength;
+ mNumberOfPciRomImages++;
+}
+
+/**
+ Get Option rom driver's mapping for PCI device.
+
+ @param PciIoDevice Device instance.
+
+ @retval TRUE Found Image mapping.
+ @retval FALSE Cannot found image mapping.
+
+**/
+BOOLEAN
+PciRomGetImageMapping (
+ IN PCI_IO_DEVICE *PciIoDevice
+ )
+{
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
+ UINTN Index;
+ BOOLEAN Found;
+
+ PciRootBridgeIo = PciIoDevice->PciRootBridgeIo;
+ Found = FALSE;
+
+ for (Index = 0; Index < mNumberOfPciRomImages; Index++) {
+ if (mRomImageTable[Index].Seg == PciRootBridgeIo->SegmentNumber &&
+ mRomImageTable[Index].Bus == PciIoDevice->BusNumber &&
+ mRomImageTable[Index].Dev == PciIoDevice->DeviceNumber &&
+ mRomImageTable[Index].Func == PciIoDevice->FunctionNumber ) {
+ Found = TRUE;
+
+ if (mRomImageTable[Index].ImageHandle != NULL) {
+ AddDriver (PciIoDevice, mRomImageTable[Index].ImageHandle);
+ } else {
+ PciIoDevice->PciIo.RomImage = (VOID *) (UINTN) mRomImageTable[Index].RomAddress;
+ PciIoDevice->PciIo.RomSize = (UINTN) mRomImageTable[Index].RomLength;
+ }
+ }
+ }
+
+ return Found;
+}
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