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From: Gerd Hoffmann <kraxel@redhat.com>
To: qemu-devel@nongnu.org
Cc: Gerd Hoffmann <kraxel@redhat.com>, David Gibson <dgibson@redhat.com>
Subject: [Qemu-devel] [PATCH v2 07/11] vga: Remove some "should be done in BIOS" comments
Date: Mon, 29 Sep 2014 11:31:08 +0200	[thread overview]
Message-ID: <1411983073-13058-8-git-send-email-kraxel@redhat.com> (raw)
In-Reply-To: <1411983073-13058-1-git-send-email-kraxel@redhat.com>

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Not all platforms have a VGA BIOS, powerpc typically relies on
using the DISPI interface to initialize the card.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
---
 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 c3df0c5..21aa2c6 100644
--- a/hw/display/vga.c
+++ b/hw/display/vga.c
@@ -761,14 +761,13 @@ 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;
@@ -801,7 +800,6 @@ 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

  parent reply	other threads:[~2014-09-29  9:31 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-29  9:31 [Qemu-devel] [PATCH v2 00/11] vga: cleanup and endianness patch series Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 01/11] vga: Start cutting out non-32bpp conversion support Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 02/11] vga: Remove remainder of old conversion cruft Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 03/11] vga: Separate LE and BE conversion functions Gerd Hoffmann
2014-09-30  0:43   ` David Gibson
2014-09-30  7:59     ` Gerd Hoffmann
2014-09-30  8:07       ` David Gibson
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 04/11] vga: Remove rgb_to_pixel indirection Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 05/11] vga: Simplify vga_draw_blank() a bit Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 06/11] cirrus: Remove non-32bpp cursor drawing Gerd Hoffmann
2014-09-29  9:31 ` Gerd Hoffmann [this message]
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 08/11] vga: Rename vga_template.h to vga-helpers.h Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 09/11] vga: Make fb endian a common state variable Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 10/11] vga: Add endian control register Gerd Hoffmann
2014-09-30  0:45   ` David Gibson
2014-09-30 10:56     ` Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 11/11] vga-pci: add qext region to mmio Gerd Hoffmann

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