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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-vesa.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-vesa.c')
-rw-r--r--arch/i386/boot/video-vesa.c292
1 files changed, 0 insertions, 292 deletions
diff --git a/arch/i386/boot/video-vesa.c b/arch/i386/boot/video-vesa.c
deleted file mode 100644
index 19219071071..00000000000
--- a/arch/i386/boot/video-vesa.c
+++ /dev/null
@@ -1,292 +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-vesa.c
- *
- * VESA text modes
- */
-
-#include "boot.h"
-#include "video.h"
-#include "vesa.h"
-
-/* VESA information */
-static struct vesa_general_info vginfo;
-static struct vesa_mode_info vminfo;
-
-__videocard video_vesa;
-
-static void vesa_store_mode_params_graphics(void);
-
-static int vesa_probe(void)
-{
-#if defined(CONFIG_VIDEO_VESA) || defined(CONFIG_FIRMWARE_EDID)
- u16 ax, cx, di;
- u16 mode;
- addr_t mode_ptr;
- struct mode_info *mi;
- int nmodes = 0;
-
- video_vesa.modes = GET_HEAP(struct mode_info, 0);
-
- vginfo.signature = VBE2_MAGIC;
-
- ax = 0x4f00;
- di = (size_t)&vginfo;
- asm(INT10
- : "+a" (ax), "+D" (di), "=m" (vginfo)
- : : "ebx", "ecx", "edx", "esi");
-
- if (ax != 0x004f ||
- vginfo.signature != VESA_MAGIC ||
- vginfo.version < 0x0102)
- return 0; /* Not present */
-#endif /* CONFIG_VIDEO_VESA || CONFIG_FIRMWARE_EDID */
-#ifdef CONFIG_VIDEO_VESA
- set_fs(vginfo.video_mode_ptr.seg);
- mode_ptr = vginfo.video_mode_ptr.off;
-
- while ((mode = rdfs16(mode_ptr)) != 0xffff) {
- mode_ptr += 2;
-
- if (heap_free() < sizeof(struct mode_info))
- break; /* Heap full, can't save mode info */
-
- if (mode & ~0x1ff)
- continue;
-
- memset(&vminfo, 0, sizeof vminfo); /* Just in case... */
-
- ax = 0x4f01;
- cx = mode;
- di = (size_t)&vminfo;
- asm(INT10
- : "+a" (ax), "+c" (cx), "+D" (di), "=m" (vminfo)
- : : "ebx", "edx", "esi");
-
- if (ax != 0x004f)
- continue;
-
- if ((vminfo.mode_attr & 0x15) == 0x05) {
- /* Text Mode, TTY BIOS supported,
- supported by hardware */
- mi = GET_HEAP(struct mode_info, 1);
- mi->mode = mode + VIDEO_FIRST_VESA;
- mi->x = vminfo.h_res;
- mi->y = vminfo.v_res;
- nmodes++;
- } else if ((vminfo.mode_attr & 0x99) == 0x99) {
-#ifdef CONFIG_FB
- /* Graphics mode, color, linear frame buffer
- supported -- register the mode but hide from
- the menu. Only do this if framebuffer is
- configured, however, otherwise the user will
- be left without a screen. */
- mi = GET_HEAP(struct mode_info, 1);
- mi->mode = mode + VIDEO_FIRST_VESA;
- mi->x = mi->y = 0;
- nmodes++;
-#endif
- }
- }
-
- return nmodes;
-#else
- return 0;
-#endif /* CONFIG_VIDEO_VESA */
-}
-
-static int vesa_set_mode(struct mode_info *mode)
-{
- u16 ax, bx, cx, di;
- int is_graphic;
- u16 vesa_mode = mode->mode - VIDEO_FIRST_VESA;
-
- memset(&vminfo, 0, sizeof vminfo); /* Just in case... */
-
- ax = 0x4f01;
- cx = vesa_mode;
- di = (size_t)&vminfo;
- asm(INT10
- : "+a" (ax), "+c" (cx), "+D" (di), "=m" (vminfo)
- : : "ebx", "edx", "esi");
-
- if (ax != 0x004f)
- return -1;
-
- if ((vminfo.mode_attr & 0x15) == 0x05) {
- /* It's a supported text mode */
- is_graphic = 0;
- } else if ((vminfo.mode_attr & 0x99) == 0x99) {
- /* It's a graphics mode with linear frame buffer */
- is_graphic = 1;
- vesa_mode |= 0x4000; /* Request linear frame buffer */
- } else {
- return -1; /* Invalid mode */
- }
-
-
- ax = 0x4f02;
- bx = vesa_mode;
- di = 0;
- asm volatile(INT10
- : "+a" (ax), "+b" (bx), "+D" (di)
- : : "ecx", "edx", "esi");
-
- if (ax != 0x004f)
- return -1;
-
- graphic_mode = is_graphic;
- if (!is_graphic) {
- /* Text mode */
- force_x = mode->x;
- force_y = mode->y;
- do_restore = 1;
- } else {
- /* Graphics mode */
- vesa_store_mode_params_graphics();
- }
-
- return 0;
-}
-
-
-/* Switch DAC to 8-bit mode */
-static void vesa_dac_set_8bits(void)
-{
- u8 dac_size = 6;
-
- /* If possible, switch the DAC to 8-bit mode */
- if (vginfo.capabilities & 1) {
- u16 ax, bx;
-
- ax = 0x4f08;
- bx = 0x0800;
- asm volatile(INT10
- : "+a" (ax), "+b" (bx)
- : : "ecx", "edx", "esi", "edi");
-
- if (ax == 0x004f)
- dac_size = bx >> 8;
- }
-
- /* Set the color sizes to the DAC size, and offsets to 0 */
- boot_params.screen_info.red_size = dac_size;
- boot_params.screen_info.green_size = dac_size;
- boot_params.screen_info.blue_size = dac_size;
- boot_params.screen_info.rsvd_size = dac_size;
-
- boot_params.screen_info.red_pos = 0;
- boot_params.screen_info.green_pos = 0;
- boot_params.screen_info.blue_pos = 0;
- boot_params.screen_info.rsvd_pos = 0;
-}
-
-/* Save the VESA protected mode info */
-static void vesa_store_pm_info(void)
-{
- u16 ax, bx, di, es;
-
- ax = 0x4f0a;
- bx = di = 0;
- asm("pushw %%es; "INT10"; movw %%es,%0; popw %%es"
- : "=d" (es), "+a" (ax), "+b" (bx), "+D" (di)
- : : "ecx", "esi");
-
- if (ax != 0x004f)
- return;
-
- boot_params.screen_info.vesapm_seg = es;
- boot_params.screen_info.vesapm_off = di;
-}
-
-/*
- * Save video mode parameters for graphics mode
- */
-static void vesa_store_mode_params_graphics(void)
-{
- /* Tell the kernel we're in VESA graphics mode */
- boot_params.screen_info.orig_video_isVGA = 0x23;
-
- /* Mode parameters */
- boot_params.screen_info.vesa_attributes = vminfo.mode_attr;
- boot_params.screen_info.lfb_linelength = vminfo.logical_scan;
- boot_params.screen_info.lfb_width = vminfo.h_res;
- boot_params.screen_info.lfb_height = vminfo.v_res;
- boot_params.screen_info.lfb_depth = vminfo.bpp;
- boot_params.screen_info.pages = vminfo.image_planes;
- boot_params.screen_info.lfb_base = vminfo.lfb_ptr;
- memcpy(&boot_params.screen_info.red_size,
- &vminfo.rmask, 8);
-
- /* General parameters */
- boot_params.screen_info.lfb_size = vginfo.total_memory;
-
- if (vminfo.bpp <= 8)
- vesa_dac_set_8bits();
-
- vesa_store_pm_info();
-}
-
-/*
- * Save EDID information for the kernel; this is invoked, separately,
- * after mode-setting.
- */
-void vesa_store_edid(void)
-{
-#ifdef CONFIG_FIRMWARE_EDID
- u16 ax, bx, cx, dx, di;
-
- /* Apparently used as a nonsense token... */
- memset(&boot_params.edid_info, 0x13, sizeof boot_params.edid_info);
-
- if (vginfo.version < 0x0200)
- return; /* EDID requires VBE 2.0+ */
-
- ax = 0x4f15; /* VBE DDC */
- bx = 0x0000; /* Report DDC capabilities */
- cx = 0; /* Controller 0 */
- di = 0; /* ES:DI must be 0 by spec */
-
- /* Note: The VBE DDC spec is different from the main VESA spec;
- we genuinely have to assume all registers are destroyed here. */
-
- asm("pushw %%es; movw %2,%%es; "INT10"; popw %%es"
- : "+a" (ax), "+b" (bx)
- : "c" (cx), "D" (di)
- : "esi");
-
- if (ax != 0x004f)
- return; /* No EDID */
-
- /* BH = time in seconds to transfer EDD information */
- /* BL = DDC level supported */
-
- ax = 0x4f15; /* VBE DDC */
- bx = 0x0001; /* Read EDID */
- cx = 0; /* Controller 0 */
- dx = 0; /* EDID block number */
- di =(size_t) &boot_params.edid_info; /* (ES:)Pointer to block */
- asm(INT10
- : "+a" (ax), "+b" (bx), "+d" (dx), "=m" (boot_params.edid_info)
- : "c" (cx), "D" (di)
- : "esi");
-#endif /* CONFIG_FIRMWARE_EDID */
-}
-
-__videocard video_vesa =
-{
- .card_name = "VESA",
- .probe = vesa_probe,
- .set_mode = vesa_set_mode,
- .xmode_first = VIDEO_FIRST_VESA,
- .xmode_n = 0x200,
-};