Added first version of the VBE terminal code.
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chaac
parent
001cf69421
commit
6323696adf
9 changed files with 1633 additions and 2 deletions
143
commands/i386/pc/vbe_list_modes.c
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143
commands/i386/pc/vbe_list_modes.c
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/* vbe_list_modes.c - command to list compatible VBE video modes. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2005 Free Software Foundation, Inc.
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*
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* GRUB is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/normal.h>
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#include <grub/dl.h>
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#include <grub/arg.h>
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#include <grub/env.h>
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#include <grub/misc.h>
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#include <grub/machine/init.h>
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#include <grub/machine/vbe.h>
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static void *
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real2pm(grub_vbe_farptr_t ptr)
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{
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return (void *)((((unsigned long)ptr & 0xFFFF0000) >> 12UL) +
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((unsigned long)ptr & 0x0000FFFF));
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}
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static grub_err_t
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grub_cmd_vbe_list_modes(struct grub_arg_list *state __attribute__ ((unused)),
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int argc __attribute__ ((unused)),
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char **args __attribute__ ((unused)))
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{
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struct grub_vbe_info_block controller_info;
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struct grub_vbe_mode_info_block mode_info_tmp;
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grub_uint32_t use_mode = GRUB_VBE_DEFAULT_VIDEO_MODE;
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grub_uint16_t *sptr;
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grub_uint32_t rc;
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char *modevar;
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grub_printf ("List of compatible video modes:\n");
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rc = grub_vbe_probe (&controller_info);
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if (rc != GRUB_ERR_NONE)
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{
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grub_printf ("VESA BIOS Extension not detected!\n");
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return rc;
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}
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sptr = real2pm (controller_info.video_mode_ptr);
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/* Walk thru all video modes listed. */
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for (;*sptr != 0xFFFF; sptr++)
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{
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int valid_mode = 1;
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rc = grub_vbe_get_video_mode_info (*sptr, &mode_info_tmp);
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if (rc != GRUB_ERR_NONE) continue;
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if ((mode_info_tmp.mode_attributes & 0x080) == 0)
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{
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/* We support only linear frame buffer modes. */
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continue;
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}
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if ((mode_info_tmp.mode_attributes & 0x010) == 0)
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{
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/* We allow only graphical modes. */
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continue;
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}
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switch(mode_info_tmp.memory_model)
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{
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case 0x04:
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case 0x06:
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break;
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default:
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valid_mode = 0;
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break;
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}
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if (valid_mode == 0) continue;
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grub_printf ("0x%03x: %d x %d x %d bpp\n",
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*sptr,
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mode_info_tmp.x_resolution,
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mode_info_tmp.y_resolution,
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mode_info_tmp.bits_per_pixel);
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}
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/* Check existence of vbe_mode environment variable. */
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modevar = grub_env_get ("vbe_mode");
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/* Check existence of vbe_mode environment variable. */
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modevar = grub_env_get ("vbe_mode");
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if (modevar != 0)
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{
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unsigned long value = 0;
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if ((grub_strncmp (modevar, "0x", 2) == 0) ||
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(grub_strncmp (modevar, "0X", 2) == 0))
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{
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/* Convert HEX mode number. */
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value = grub_strtoul (modevar + 2, 0, 16);
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}
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else
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{
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/* Convert DEC mode number. */
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value = grub_strtoul (modevar, 0, 10);
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}
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if (value != 0)
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{
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use_mode = value;
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}
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}
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grub_printf ("Configured VBE mode (vbe_mode) = 0x%03x\n", use_mode);
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return 0;
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}
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GRUB_MOD_INIT
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{
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(void)mod; /* To stop warning. */
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grub_register_command ("vbe_list_modes", grub_cmd_vbe_list_modes, GRUB_COMMAND_FLAG_BOTH,
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"vbe_list_modes", "List compatible VESA BIOS extension video modes.", 0);
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}
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GRUB_MOD_FINI
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{
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grub_unregister_command ("vbe_list_modes");
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}
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195
commands/i386/pc/vbe_test.c
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195
commands/i386/pc/vbe_test.c
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@ -0,0 +1,195 @@
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/* vbe_test.c - command to test VESA BIOS Extension 2.0+ support. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2005 Free Software Foundation, Inc.
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*
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* GRUB is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/normal.h>
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#include <grub/dl.h>
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#include <grub/arg.h>
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#include <grub/env.h>
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#include <grub/misc.h>
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#include <grub/term.h>
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#include <grub/machine/init.h>
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#include <grub/machine/vbe.h>
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static void *
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real2pm(grub_vbe_farptr_t ptr)
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{
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return (void *)((((unsigned long)ptr & 0xFFFF0000) >> 12UL) +
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((unsigned long)ptr & 0x0000FFFF));
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}
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static grub_err_t
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grub_cmd_vbe_test(struct grub_arg_list *state __attribute__ ((unused)),
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int argc __attribute__ ((unused)),
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char **args __attribute__ ((unused)))
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{
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grub_uint32_t rc;
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grub_uint16_t *sptr;
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char *modevar;
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struct grub_vbe_mode_info_block mode_info;
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struct grub_vbe_info_block controller_info;
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grub_uint32_t use_mode = GRUB_VBE_DEFAULT_VIDEO_MODE;
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grub_uint32_t old_mode;
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grub_uint8_t *framebuffer = 0;
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grub_uint32_t bytes_per_scan_line = 0;
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unsigned char *ptr;
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int i;
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grub_printf ("Probing for VESA BIOS Extension ... ");
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/* Check if VESA BIOS exists. */
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rc = grub_vbe_probe(&controller_info);
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if (rc != GRUB_ERR_NONE)
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{
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grub_printf ("not found!\n");
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return rc;
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}
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grub_printf ("found!\n");
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/* Dump out controller information. */
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grub_printf ("VBE signature = %c%c%c%c\n",
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controller_info.signature[0],
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controller_info.signature[1],
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controller_info.signature[2],
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controller_info.signature[3]);
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grub_printf ("VBE version = %d.%d\n",
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controller_info.version >> 8,
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controller_info.version & 0xFF);
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grub_printf ("OEM string ptr = %08x\n",
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controller_info.oem_string_ptr);
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grub_printf ("Total memory = %d\n",
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controller_info.total_memory);
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sptr = real2pm(controller_info.video_mode_ptr);
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rc = grub_vbe_get_video_mode(&old_mode);
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grub_printf ("Get video mode rc = %04x\n", rc);
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if (rc == GRUB_ERR_NONE)
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{
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grub_printf ("Old video mode = %04x\n", old_mode);
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}
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/* Check existence of vbe_mode environment variable. */
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modevar = grub_env_get ("vbe_mode");
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if (modevar != 0)
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{
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unsigned long value = 0;
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if ((grub_strncmp (modevar, "0x", 2) == 0) ||
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(grub_strncmp (modevar, "0X", 2) == 0))
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{
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/* Convert HEX mode number. */
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value = grub_strtoul (modevar + 2, 0, 16);
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}
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else
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{
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/* Convert DEC mode number. */
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value = grub_strtoul (modevar, 0, 10);
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}
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if (value != 0)
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{
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use_mode = value;
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}
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}
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rc = grub_vbe_get_video_mode_info (use_mode, &mode_info);
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/* Dump out details about the mode being tested. */
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grub_printf ("mode: 0x%03x\n",
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use_mode);
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grub_printf ("width : %d\n",
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mode_info.x_resolution);
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grub_printf ("height: %d\n",
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mode_info.y_resolution);
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grub_printf ("memory model: %02x\n",
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mode_info.memory_model);
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grub_printf ("bytes/scanline: %d\n",
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mode_info.bytes_per_scan_line);
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grub_printf ("bytes/scanline (lin): %d\n",
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mode_info.lin_bytes_per_scan_line);
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grub_printf ("base address: %08x\n",
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mode_info.phys_base_addr);
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grub_printf ("red mask/pos: %d/%d\n",
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mode_info.red_mask_size,
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mode_info.red_field_position);
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grub_printf ("green mask/pos: %d/%d\n",
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mode_info.green_mask_size,
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mode_info.green_field_position);
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grub_printf ("blue mask/pos: %d/%d\n",
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mode_info.blue_mask_size,
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mode_info.blue_field_position);
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grub_printf ("Press any key to continue.\n");
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grub_getkey ();
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/* Setup GFX mode. */
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rc = grub_vbe_set_video_mode (use_mode, &mode_info);
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/* Determine framebuffer address and how many bytes are in scan line. */
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framebuffer = (grub_uint8_t *)mode_info.phys_base_addr;
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ptr = framebuffer;
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if (controller_info.version >= 0x300)
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{
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bytes_per_scan_line = mode_info.lin_bytes_per_scan_line;
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}
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else
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{
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bytes_per_scan_line = mode_info.bytes_per_scan_line;
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}
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/* Draw some random data to screen. */
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for (i = 0; i < 256 * 256; i++)
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{
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ptr[i] = i & 0x0F;
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}
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/* Draw white line to screen. */
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for (i = 0; i < 100; i++)
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{
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ptr[mode_info.bytes_per_scan_line * 50 + i] = 0x0F;
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}
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/* Draw another white line to screen. */
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grub_memset (ptr + bytes_per_scan_line * 51, 0x0f, bytes_per_scan_line);
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grub_getkey ();
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/* Restore old video mode. */
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grub_vbe_set_video_mode (old_mode, 0);
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return 0;
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}
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GRUB_MOD_INIT
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{
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(void)mod; /* To stop warning. */
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grub_register_command ("vbe_test", grub_cmd_vbe_test, GRUB_COMMAND_FLAG_BOTH,
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"vbe_test", "Test VESA BIOS Extension 2.0+ support", 0);
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}
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GRUB_MOD_FINI
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{
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grub_unregister_command ("vbe_test");
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}
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