From 9397be4c801c71c84bc4ba6036efea32f5426c2e Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 29 Apr 2016 07:02:46 +0200 Subject: [PATCH 1/6] vga: Remove some "should be done in BIOS" comments RH-Author: Gerd Hoffmann Message-id: <1461913371-3145-2-git-send-email-kraxel@redhat.com> Patchwork-id: 70301 O-Subject: [virt-devel] [RHEL-7.2.z qemu-kvm PATCH 1/6] vga: Remove some "should be done in BIOS" comments Bugzilla: 1331412 RH-Acked-by: Miroslav Rezanina RH-Acked-by: Laszlo Ersek RH-Acked-by: Dr. David Alan Gilbert From: Benjamin Herrenschmidt Not all platforms have a VGA BIOS, powerpc typically relies on using the DISPI interface to initialize the card. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Gerd Hoffmann Reviewed-by: David Gibson Signed-off-by: Miroslav Rezanina --- hw/display/vga.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/hw/display/vga.c b/hw/display/vga.c index 0761b9e..48dad03 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -764,14 +764,13 @@ void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val) s->vbe_regs[VBE_DISPI_INDEX_ENABLE] |= VBE_DISPI_ENABLED; vbe_fixup_regs(s); - /* clear the screen (should be done in BIOS) */ + /* clear the screen */ if (!(val & VBE_DISPI_NOCLEARMEM)) { memset(s->vram_ptr, 0, s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset); } - /* we initialize the VGA graphic mode (should be done - in BIOS) */ + /* we initialize the VGA graphic mode */ /* graphic mode + memory map 1 */ s->gr[VGA_GFX_MISC] = (s->gr[VGA_GFX_MISC] & ~0x0c) | 0x04 | VGA_GR06_GRAPHICS_MODE; @@ -804,7 +803,6 @@ void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val) (shift_control << 5); s->cr[VGA_CRTC_MAX_SCAN] &= ~0x9f; /* no double scan */ } else { - /* XXX: the bios should do that */ s->bank_offset = 0; } s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0; -- 1.8.3.1