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virtio-vga: implement big-endian-framebuffer property 

Allows to switch the (vga mode) framebuffer into bigendian mode
by setting the property, simliar to stdvga.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200928085335.21961-2-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2020-09-28 10:53:34 +02:00
parent 4bf47f3634
commit 8be61ce2ce
1 changed files with 19 additions and 0 deletions
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19
hw/display/virtio-vga.c
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@ -168,6 +168,20 @@ static void virtio_vga_base_reset(DeviceState *dev)
vga_dirty_log_start(&vvga->vga);
}
static bool virtio_vga_get_big_endian_fb(Object *obj, Error **errp)
{
VirtIOVGABase *d = VIRTIO_VGA_BASE(obj);
return d->vga.big_endian_fb;
}
static void virtio_vga_set_big_endian_fb(Object *obj, bool value, Error **errp)
{
VirtIOVGABase *d = VIRTIO_VGA_BASE(obj);
d->vga.big_endian_fb = value;
}
static Property virtio_vga_base_properties[] = {
DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy),
DEFINE_PROP_END_OF_LIST(),
@ -190,6 +204,11 @@ static void virtio_vga_base_class_init(ObjectClass *klass, void *data)
k->realize = virtio_vga_base_realize;
pcidev_k->romfile = "vgabios-virtio.bin";
pcidev_k->class_id = PCI_CLASS_DISPLAY_VGA;
/* Expose framebuffer byteorder via QOM */
object_class_property_add_bool(klass, "big-endian-framebuffer",
virtio_vga_get_big_endian_fb,
virtio_vga_set_big_endian_fb);
}
static TypeInfo virtio_vga_base_info = {