[SLOF] [PATCH v2] Do not try to use virtio-gpu in VGA mode

[Thomas Huth]

virtio-gpu and virtio-vga share the same PCI ID (but have a
different PCI class). Since virtio-gpu does not have the VGA
register interface anymore, we should never try to use these
registers in SLOF, i.e. we must not include qemu-vga.fs in this
case.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1375166
Signed-off-by: Thomas Huth <thuth at redhat.com>
---
 v2:
 - Set up the gpu devices with pci-device-generic-setup

 board-qemu/slof/pci-device_1af4_1050.fs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/board-qemu/slof/pci-device_1af4_1050.fs b/board-qemu/slof/pci-device_1af4_1050.fs
index 516056a..0e7f639 100644
--- a/board-qemu/slof/pci-device_1af4_1050.fs
+++ b/board-qemu/slof/pci-device_1af4_1050.fs
@@ -10,6 +10,14 @@
 \ *     IBM Corporation - initial implementation
 \ ****************************************************************************/
 
-s" virtio [ vga ]" type cr
+\ Note: The PCI ID 1af4:1050 is used for both, virtio-vga and virtio-gpu
+\ devices. Only the first one provides a VGA interface that we currently
+\ support in SLOF.
 
-s" qemu-vga.fs" included
+my-space pci-class@ 30000 = IF
+    s" virtio [ vga ]" type cr
+    s" qemu-vga.fs" included
+ELSE
+    s" virtio [ gpu ]" type cr
+    my-space pci-device-generic-setup
+THEN
-- 
1.8.3.1