diff options
Diffstat (limited to 'MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c | 64 |
1 files changed, 58 insertions, 6 deletions
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c index 33dbfa4..2bc4f8c 100644 --- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c +++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciOptionRomSupport.c @@ -1,7 +1,7 @@ /** @file
PCI Rom supporting funtions implementation for PCI Bus module.
-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
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
@@ -310,6 +310,63 @@ GetOpRomInfo ( }
/**
+ Check if the RomImage contains EFI Images.
+
+ @param RomImage The ROM address of Image for check.
+ @param RomSize Size of ROM for check.
+
+ @retval TRUE ROM contain EFI Image.
+ @retval FALSE ROM not contain EFI Image.
+
+**/
+BOOLEAN
+ContainEfiImage (
+ IN VOID *RomImage,
+ IN UINT64 RomSize
+ )
+{
+ PCI_EXPANSION_ROM_HEADER *RomHeader;
+ PCI_DATA_STRUCTURE *RomPcir;
+ UINT8 Indicator;
+
+ Indicator = 0;
+ RomHeader = RomImage;
+ if (RomHeader == NULL) {
+ return FALSE;
+ }
+
+ do {
+ if (RomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
+ RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + 512);
+ continue;
+ }
+
+ //
+ // The PCI Data Structure must be DWORD aligned.
+ //
+ if (RomHeader->PcirOffset == 0 ||
+ (RomHeader->PcirOffset & 3) != 0 ||
+ (UINT8 *) RomHeader + RomHeader->PcirOffset + sizeof (PCI_DATA_STRUCTURE) > (UINT8 *) RomImage + RomSize) {
+ break;
+ }
+
+ RomPcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) RomHeader + RomHeader->PcirOffset);
+ if (RomPcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {
+ break;
+ }
+
+ if (RomPcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) {
+ return TRUE;
+ }
+
+ Indicator = RomPcir->Indicator;
+ RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + RomPcir->ImageLength * 512);
+ } while (((UINT8 *) RomHeader < (UINT8 *) RomImage + RomSize) && ((Indicator & 0x80) == 0x00));
+
+ return FALSE;
+}
+
+/**
Load Option Rom image for specified PCI device.
@param PciDevice Pci device instance.
@@ -340,7 +397,6 @@ LoadOpRomImage ( UINT32 LegacyImageLength;
UINT8 *RomInMemory;
UINT8 CodeType;
- BOOLEAN HasEfiOpRom;
RomSize = PciDevice->RomSize;
@@ -392,7 +448,6 @@ LoadOpRomImage ( RetStatus = EFI_NOT_FOUND;
FirstCheck = TRUE;
LegacyImageLength = 0;
- HasEfiOpRom = FALSE;
do {
PciDevice->PciRootBridgeIo->Mem.Read (
@@ -443,8 +498,6 @@ LoadOpRomImage ( if (RomPcir->CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {
CodeType = PCI_CODE_TYPE_PCAT_IMAGE;
LegacyImageLength = ((UINT32)((EFI_LEGACY_EXPANSION_ROM_HEADER *)RomHeader)->Size512) * 512;
- } else if (RomPcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) {
- HasEfiOpRom = TRUE;
}
Indicator = RomPcir->Indicator;
RomImageSize = RomImageSize + RomPcir->ImageLength * 512;
@@ -484,7 +537,6 @@ LoadOpRomImage ( RomDecode (PciDevice, RomBarIndex, RomBar, FALSE);
- PciDevice->HasEfiOpRom = HasEfiOpRom;
PciDevice->EmbeddedRom = TRUE;
PciDevice->PciIo.RomSize = RomImageSize;
PciDevice->PciIo.RomImage = RomInMemory;
|