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OvmfPkg/QemuVideoDxe: ignore display resolutions smaller than 640x480

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GraphicsConsoleDxe will assert in case the resolution is too small.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2024-08-23 14:36:16 +02:00 committed by mergify[bot]
parent 58035e8b5e
commit 391666da2c
1 changed files with 14 additions and 4 deletions
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18
OvmfPkg/QemuVideoDxe/Initialize.c
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@ -293,6 +293,8 @@ QemuVideoBochsEdid (
) )
{ {
EFI_STATUS Status; EFI_STATUS Status;
UINT32 X;
UINT32 Y;
if (Private->Variant != QEMU_VIDEO_BOCHS_MMIO) { if (Private->Variant != QEMU_VIDEO_BOCHS_MMIO) {
return; return;
@ -344,16 +346,24 @@ QemuVideoBochsEdid (
return; return;
} }
*XRes = Private->Edid[56] | ((Private->Edid[58] & 0xf0) << 4); X = Private->Edid[56] | ((Private->Edid[58] & 0xf0) << 4);
*YRes = Private->Edid[59] | ((Private->Edid[61] & 0xf0) << 4); Y = Private->Edid[59] | ((Private->Edid[61] & 0xf0) << 4);
DEBUG (( DEBUG ((
DEBUG_INFO, DEBUG_INFO,
"%a: default resolution: %dx%d\n", "%a: default resolution: %dx%d\n",
__func__, __func__,
*XRes, X,
*YRes Y
)); ));
if ((X < 640) || (Y < 480)) {
/* ignore hint, GraphicsConsoleDxe needs 640x480 or larger */
return;
}
*XRes = X;
*YRes = Y;
if (PcdGet8 (PcdVideoResolutionSource) == 0) { if (PcdGet8 (PcdVideoResolutionSource) == 0) {
Status = PcdSet32S (PcdVideoHorizontalResolution, *XRes); Status = PcdSet32S (PcdVideoHorizontalResolution, *XRes);
ASSERT_RETURN_ERROR (Status); ASSERT_RETURN_ERROR (Status);