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authorThomas Gleixner <tglx@linutronix.de>2007-10-11 11:16:45 +0200
committerThomas Gleixner <tglx@linutronix.de>2007-10-11 11:16:45 +0200
commit96ae6ea0be1b902c28b3b463c27da42b41e2b63a (patch)
treefbc18761d4fa93d7b0f6dbf3496289fa32bd363a /arch/i386/boot/video-bios.c
parent0530bf37cebcf22a73652937c2340bc1ebd92000 (diff)
i386: move boot
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/i386/boot/video-bios.c')
-rw-r--r--arch/i386/boot/video-bios.c125
1 files changed, 0 insertions, 125 deletions
diff --git a/arch/i386/boot/video-bios.c b/arch/i386/boot/video-bios.c
deleted file mode 100644
index 68e65d95cdf..00000000000
--- a/arch/i386/boot/video-bios.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/* -*- linux-c -*- ------------------------------------------------------- *
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright 2007 rPath, Inc. - All Rights Reserved
- *
- * This file is part of the Linux kernel, and is made available under
- * the terms of the GNU General Public License version 2.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * arch/i386/boot/video-bios.c
- *
- * Standard video BIOS modes
- *
- * We have two options for this; silent and scanned.
- */
-
-#include "boot.h"
-#include "video.h"
-
-__videocard video_bios;
-
-/* Set a conventional BIOS mode */
-static int set_bios_mode(u8 mode);
-
-static int bios_set_mode(struct mode_info *mi)
-{
- return set_bios_mode(mi->mode - VIDEO_FIRST_BIOS);
-}
-
-static int set_bios_mode(u8 mode)
-{
- u16 ax;
- u8 new_mode;
-
- ax = mode; /* AH=0x00 Set Video Mode */
- asm volatile(INT10
- : "+a" (ax)
- : : "ebx", "ecx", "edx", "esi", "edi");
-
- ax = 0x0f00; /* Get Current Video Mode */
- asm volatile(INT10
- : "+a" (ax)
- : : "ebx", "ecx", "edx", "esi", "edi");
-
- do_restore = 1; /* Assume video contents were lost */
- new_mode = ax & 0x7f; /* Not all BIOSes are clean with the top bit */
-
- if (new_mode == mode)
- return 0; /* Mode change OK */
-
- if (new_mode != boot_params.screen_info.orig_video_mode) {
- /* Mode setting failed, but we didn't end up where we
- started. That's bad. Try to revert to the original
- video mode. */
- ax = boot_params.screen_info.orig_video_mode;
- asm volatile(INT10
- : "+a" (ax)
- : : "ebx", "ecx", "edx", "esi", "edi");
- }
- return -1;
-}
-
-static int bios_probe(void)
-{
- u8 mode;
- u8 saved_mode = boot_params.screen_info.orig_video_mode;
- u16 crtc;
- struct mode_info *mi;
- int nmodes = 0;
-
- if (adapter != ADAPTER_EGA && adapter != ADAPTER_VGA)
- return 0;
-
- set_fs(0);
- crtc = vga_crtc();
-
- video_bios.modes = GET_HEAP(struct mode_info, 0);
-
- for (mode = 0x14; mode <= 0x7f; mode++) {
- if (heap_free() < sizeof(struct mode_info))
- break;
-
- if (mode_defined(VIDEO_FIRST_BIOS+mode))
- continue;
-
- if (set_bios_mode(mode))
- continue;
-
- /* Try to verify that it's a text mode. */
-
- /* Attribute Controller: make graphics controller disabled */
- if (in_idx(0x3c0, 0x10) & 0x01)
- continue;
-
- /* Graphics Controller: verify Alpha addressing enabled */
- if (in_idx(0x3ce, 0x06) & 0x01)
- continue;
-
- /* CRTC cursor location low should be zero(?) */
- if (in_idx(crtc, 0x0f))
- continue;
-
- mi = GET_HEAP(struct mode_info, 1);
- mi->mode = VIDEO_FIRST_BIOS+mode;
- mi->x = rdfs16(0x44a);
- mi->y = rdfs8(0x484)+1;
- nmodes++;
- }
-
- set_bios_mode(saved_mode);
-
- return nmodes;
-}
-
-__videocard video_bios =
-{
- .card_name = "BIOS (scanned)",
- .probe = bios_probe,
- .set_mode = bios_set_mode,
- .unsafe = 1,
- .xmode_first = VIDEO_FIRST_BIOS,
- .xmode_n = 0x80,
-};