diff --git a/OvmfPkg/QemuVideoDxe/Gop.c b/OvmfPkg/QemuVideoDxe/Gop.c index 512fd27acb..b479d24a87 100644 --- a/OvmfPkg/QemuVideoDxe/Gop.c +++ b/OvmfPkg/QemuVideoDxe/Gop.c @@ -1,7 +1,7 @@ /** @file Graphics Output Protocol functions for the QEMU video controller. - Copyright (c) 2007 - 2017, Intel Corporation. All rights reserved.
+ Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License @@ -196,9 +196,10 @@ Routine Description: --*/ { - QEMU_VIDEO_PRIVATE_DATA *Private; - QEMU_VIDEO_MODE_DATA *ModeData; - RETURN_STATUS Status; + QEMU_VIDEO_PRIVATE_DATA *Private; + QEMU_VIDEO_MODE_DATA *ModeData; + RETURN_STATUS Status; + EFI_GRAPHICS_OUTPUT_BLT_PIXEL Black; Private = QEMU_VIDEO_PRIVATE_DATA_FROM_GRAPHICS_OUTPUT_THIS (This); @@ -271,6 +272,21 @@ Routine Description: } ASSERT (Status == RETURN_SUCCESS); + // + // Per UEFI Spec, need to clear the visible portions of the output display to black. + // + ZeroMem (&Black, sizeof (Black)); + Status = FrameBufferBlt ( + Private->FrameBufferBltConfigure, + &Black, + EfiBltVideoFill, + 0, 0, + 0, 0, + This->Mode->Info->HorizontalResolution, This->Mode->Info->VerticalResolution, + 0 + ); + ASSERT_RETURN_ERROR (Status); + return EFI_SUCCESS; }