On 06/26/19 13:37, David Woodhouse wrote:
> For v3, leaving out the cosmetic parts that touch code outside OvmfPkg.
> This series is now purely the correctness fixes within OvmfPkg which are
> required to make CSM boots work properly again.
>
> The first two patches allow NVMe and VirtIO disks to be used as Legacy
> boot targets, since nobody really uses IDE any more.
>
> The third avoids using QemuVideoDxe when we have CSM, as the INT 10h
> shim installed by QemuVideoDxe conflicts with a real legacy video BIOS
> being installed.
>
> Finally, avoid placing PCI BARs above 4GiB. Strictly speaking we only
> need this for PCI devices which might be natively supported by the CSM
> BIOS, like NVMe. Devices with an OpRom already get special-cased to stay
> below 4GiB. But an IncompatiblePciDeviceSupportProtocol implementation
> doesn't get to see the PCI device class; only the vendor/device IDs so
> we can't use it for that purpose to downgrade more selectively. Instead,
> just default to putting everything below 4GiB.
>
>
> David Woodhouse (4):
> OvmfPkg/LegacyBios: set NumberBbsEntries to the size of BbsTable
> OvmfPkg/LegacyBbs: Add boot entries for VirtIO and NVME devices
> OvmfPkg: Don't build in QemuVideoDxe when we have CSM
> OvmfPkg: don't assign PCI BARs above 4GiB when CSM enabled
>
> OvmfPkg/Csm/LegacyBiosDxe/LegacyBbs.c | 157 ++++++++++++++++++++++++-
> OvmfPkg/Csm/LegacyBiosDxe/LegacyBios.c | 7 +-
> OvmfPkg/OvmfPkgIa32.dsc | 2 +
> OvmfPkg/OvmfPkgIa32.fdf | 5 +-
> OvmfPkg/OvmfPkgIa32X64.dsc | 6 +
> OvmfPkg/OvmfPkgIa32X64.fdf | 5 +-
> OvmfPkg/OvmfPkgX64.dsc | 6 +
> OvmfPkg/OvmfPkgX64.fdf | 5 +-
> 8 files changed, 179 insertions(+), 14 deletions(-)
>
Series pushed as commit range 2f3435c2343f..c7341877f695.
Thank you!
Laszlo
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