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Allow DXE dispatcher to ignore EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE type FFS file found in EFI_HOB_FIRMWARE_VOLUME2 HOB. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3694 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qwang12 2007-08-23 06:26:50 +00:00
parent 07ad9b81e3
commit bbc0f1bb24
1 changed files with 61 additions and 0 deletions
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61
MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c
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@ -786,6 +786,59 @@ Returns:
return EFI_SUCCESS;
}
STATIC
BOOLEAN
FvFoundInHobFv2 (
IN EFI_HANDLE FvHandle,
IN CONST EFI_GUID *DriverName
)
/*++
Routine Description:
Check if a FV Image type file (EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) is
described by a EFI_HOB_FIRMWARE_VOLUME2 Hob.
Arguments:
FvHandle - The handle which FVB protocol installed on.
DriverName - The driver guid specified.
Returns:
TRUE - This file is found in a EFI_HOB_FIRMWARE_VOLUME2 Hob.
FALSE - Not found.
--*/
{
EFI_PEI_HOB_POINTERS HobFv2;
EFI_STATUS Status;
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;
EFI_FIRMWARE_VOLUME_HEADER *FvHeader;
EFI_PHYSICAL_ADDRESS FvHeaderAddr;
HobFv2.Raw = GetHobList ();
while ((HobFv2.Raw = GetNextHob (EFI_HOB_TYPE_FV2, HobFv2.Raw)) != NULL) {
if (CompareGuid (DriverName, &HobFv2.FirmwareVolume2->FileName)) {
Status = CoreHandleProtocol (FvHandle, &gEfiFirmwareVolumeBlockProtocolGuid, &Fvb);
if (!EFI_ERROR (Status)) {
Status = Fvb->GetPhysicalAddress (Fvb, &FvHeaderAddr);
if (!EFI_ERROR (Status)) {
FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) FvHeaderAddr;
if (CompareGuid (&FvHeader->FileSystemGuid, &HobFv2.FirmwareVolume2->FvName)) {
return TRUE;
}
}
}
}
HobFv2.Raw = GET_NEXT_HOB (HobFv2);
}
return FALSE;
}
EFI_STATUS
@ -1038,6 +1091,14 @@ Returns:
}
}
} else if (Type == EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) {
//
// Check if this EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE file has already
// been extracted.
//
if (FvFoundInHobFv2 (FvHandle, &NameGuid)) {
continue;
}
//
// Found a firmware volume image. Produce a firmware volume block
// protocol for it so it gets dispatched from. This is usually a