Hello Andrew,
On 02/10/13 00:14, Laszlo Ersek wrote:
> On 02/08/13 22:49, David Woodhouse wrote:
>> Windows 2008r2 will stupidly try to use int 10h calls even when booted
>> via EFI. If we don't have a VGA BIOS installed, it doesn't work very well.
>>
>> So where we can, just use BiosVideoDxe instead of the native QemuVideoDxe
>> and then Windows will work fine.
>>
>> Contributed-under: TianoCore Contribution Agreement 1.0
>> Signed-off-by: David Woodhouse <[email protected]>
>> ---
>> OvmfPkg/OvmfPkgIa32.fdf | 4 ++--
>> OvmfPkg/OvmfPkgIa32X64.fdf | 4 ++--
>> OvmfPkg/OvmfPkgX64.fdf | 4 ++--
>> 3 files changed, 6 insertions(+), 6 deletions(-)
>>
>> diff --git a/OvmfPkg/OvmfPkgIa32.fdf b/OvmfPkg/OvmfPkgIa32.fdf
>> index 36c9756..1f6e837 100644
>> --- a/OvmfPkg/OvmfPkgIa32.fdf
>> +++ b/OvmfPkg/OvmfPkgIa32.fdf
>> @@ -281,9 +281,9 @@ INF
>> MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf
>> INF IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/VideoDxe.inf
>> INF IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
>> INF RuleOverride=CSM OvmfPkg/Csm/Csm16/Csm16.inf
>> -!endif
>> -
>> +!else
>> INF OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf
>> +!endif
>>
>>
>> ################################################################################
> Besides the *presumed* OpenProtocol(... BY_DRIVER ...) /
> EFI_ACCESS_DENIED conflict between the two drivers that we've been
> discussing, which IMHO would merit an update to the commit message, I
> think the DSC files should be modified similarly:
>
> "OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf {...}" should depend on
>
> !ifndef $(CSM_ENABLE)
>
> ; the GOP shouldn't be built at all if we're not including it in the
> firmware image.
supposing we have two GOPs in the OVMF image:
- IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe
- OvmfPkg/QemuVideoDxe
both UEFI_DRIVER modules, and both trying to drive the same VGA card:
can we use the DriverOrder and Driver#### firmware variables to select
which one loads and Start()s first?
Thank you,
Laszlo
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