summaryrefslogtreecommitdiff
path: root/ANDROID_3.4.5/arch/x86/boot/video-vesa.c
diff options
context:
space:
mode:
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/boot/video-vesa.c')
-rw-r--r--ANDROID_3.4.5/arch/x86/boot/video-vesa.c280
1 files changed, 0 insertions, 280 deletions
diff --git a/ANDROID_3.4.5/arch/x86/boot/video-vesa.c b/ANDROID_3.4.5/arch/x86/boot/video-vesa.c
deleted file mode 100644
index 11e8c6eb..00000000
--- a/ANDROID_3.4.5/arch/x86/boot/video-vesa.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/* -*- linux-c -*- ------------------------------------------------------- *
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright 2007 rPath, Inc. - All Rights Reserved
- * Copyright 2009 Intel Corporation; author H. Peter Anvin
- *
- * This file is part of the Linux kernel, and is made available under
- * the terms of the GNU General Public License version 2.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * 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;
-
-static __videocard video_vesa;
-
-#ifndef _WAKEUP
-static void vesa_store_mode_params_graphics(void);
-#else /* _WAKEUP */
-static inline void vesa_store_mode_params_graphics(void) {}
-#endif /* _WAKEUP */
-
-static int vesa_probe(void)
-{
- struct biosregs ireg, oreg;
- u16 mode;
- addr_t mode_ptr;
- struct mode_info *mi;
- int nmodes = 0;
-
- video_vesa.modes = GET_HEAP(struct mode_info, 0);
-
- initregs(&ireg);
- ireg.ax = 0x4f00;
- ireg.di = (size_t)&vginfo;
- intcall(0x10, &ireg, &oreg);
-
- if (oreg.ax != 0x004f ||
- vginfo.signature != VESA_MAGIC ||
- vginfo.version < 0x0102)
- return 0; /* Not present */
-
- 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... */
-
- ireg.ax = 0x4f01;
- ireg.cx = mode;
- ireg.di = (size_t)&vminfo;
- intcall(0x10, &ireg, &oreg);
-
- if (oreg.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->depth = 0; /* text */
- mi->x = vminfo.h_res;
- mi->y = vminfo.v_res;
- nmodes++;
- } else if ((vminfo.mode_attr & 0x99) == 0x99 &&
- (vminfo.memory_layout == 4 ||
- vminfo.memory_layout == 6) &&
- vminfo.memory_planes == 1) {
-#ifdef CONFIG_FB_BOOT_VESA_SUPPORT
- /* Graphics mode, color, linear frame buffer
- supported. Only register the mode if
- 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->depth = vminfo.bpp;
- mi->x = vminfo.h_res;
- mi->y = vminfo.v_res;
- nmodes++;
-#endif
- }
- }
-
- return nmodes;
-}
-
-static int vesa_set_mode(struct mode_info *mode)
-{
- struct biosregs ireg, oreg;
- int is_graphic;
- u16 vesa_mode = mode->mode - VIDEO_FIRST_VESA;
-
- memset(&vminfo, 0, sizeof vminfo); /* Just in case... */
-
- initregs(&ireg);
- ireg.ax = 0x4f01;
- ireg.cx = vesa_mode;
- ireg.di = (size_t)&vminfo;
- intcall(0x10, &ireg, &oreg);
-
- if (oreg.ax != 0x004f)
- return -1;
-
- if ((vminfo.mode_attr & 0x15) == 0x05) {
- /* It's a supported text mode */
- is_graphic = 0;
-#ifdef CONFIG_FB_BOOT_VESA_SUPPORT
- } 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 */
-#endif
- } else {
- return -1; /* Invalid mode */
- }
-
-
- initregs(&ireg);
- ireg.ax = 0x4f02;
- ireg.bx = vesa_mode;
- intcall(0x10, &ireg, &oreg);
-
- if (oreg.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;
-}
-
-
-#ifndef _WAKEUP
-
-/* Switch DAC to 8-bit mode */
-static void vesa_dac_set_8bits(void)
-{
- struct biosregs ireg, oreg;
- u8 dac_size = 6;
-
- /* If possible, switch the DAC to 8-bit mode */
- if (vginfo.capabilities & 1) {
- initregs(&ireg);
- ireg.ax = 0x4f08;
- ireg.bh = 0x08;
- intcall(0x10, &ireg, &oreg);
- if (oreg.ax == 0x004f)
- dac_size = oreg.bh;
- }
-
- /* 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)
-{
- struct biosregs ireg, oreg;
-
- initregs(&ireg);
- ireg.ax = 0x4f0a;
- intcall(0x10, &ireg, &oreg);
-
- if (oreg.ax != 0x004f)
- return;
-
- boot_params.screen_info.vesapm_seg = oreg.es;
- boot_params.screen_info.vesapm_off = oreg.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 = VIDEO_TYPE_VLFB;
-
- /* 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
- struct biosregs ireg, oreg;
-
- /* 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+ */
-
- initregs(&ireg);
- ireg.ax = 0x4f15; /* VBE DDC */
- /* ireg.bx = 0x0000; */ /* Report DDC capabilities */
- /* ireg.cx = 0; */ /* Controller 0 */
- ireg.es = 0; /* ES:DI must be 0 by spec */
- intcall(0x10, &ireg, &oreg);
-
- if (oreg.ax != 0x004f)
- return; /* No EDID */
-
- /* BH = time in seconds to transfer EDD information */
- /* BL = DDC level supported */
-
- ireg.ax = 0x4f15; /* VBE DDC */
- ireg.bx = 0x0001; /* Read EDID */
- /* ireg.cx = 0; */ /* Controller 0 */
- /* ireg.dx = 0; */ /* EDID block number */
- ireg.es = ds();
- ireg.di =(size_t)&boot_params.edid_info; /* (ES:)Pointer to block */
- intcall(0x10, &ireg, &oreg);
-#endif /* CONFIG_FIRMWARE_EDID */
-}
-
-#endif /* not _WAKEUP */
-
-static __videocard video_vesa =
-{
- .card_name = "VESA",
- .probe = vesa_probe,
- .set_mode = vesa_set_mode,
- .xmode_first = VIDEO_FIRST_VESA,
- .xmode_n = 0x200,
-};
generated by cgit (git 2.34.1) at 2025-01-25 22:28:52 +0000