Added first version of the VBE terminal code.

This commit is contained in:
chaac 2005-08-15 21:25:41 +00:00
parent 001cf69421
commit 6323696adf
9 changed files with 1633 additions and 2 deletions

View file

@ -1,3 +1,33 @@
2005-08-16 Vesa Jaaskelainen <chaac@nic.fi>
* DISTLIST: Added term/i386/pc/vesafb.c
DISTLIST: Added video/i386/pc/vbe.c
DISTLIST: Added commands/i386/pc/vbe_list_modes.c.
DISTLIST: Added commands/i386/pc/vbe_test.c.
* commands/i386/pc/vbe_list_modes.c: New file.
* commands/i386/pc/vbe_test.c: Likewise.
* term/i386/pc/vesafb.c: Likewise.
* video/i386/pc/vbe.c: Likewise.
* include/grub/i386/pc/vbe.h (GRUB_VBE_DEFAULT_VIDEO_MODE): Added define.
(grub_vbe_probe) Added prototype.
(grub_vbe_set_video_mode) Likewise.
(grub_vbe_get_video_mode) Likewise.
(grub_vbe_get_video_mode_info) Likewise.
(grub_vbe_set_pixel_rgb) Likewise.
(grub_vbe_set_pixel_index) Likewise.
* conf/i386-pc.rmk (pkgdata_MODULES): Added vbe.mod.
(pkgdata_MODULES): Added vesafb.mod.
(pkgdata_MODULES): Added vbe_list_modes.mod.
(pkgdata_MODULES): Added vbe_test.mod.
(vbe_mod_SOURCES): Added.
(vbe_mod_CFLAGS): Likewise.
(vesafb_mod_SOURCES): Likewise.
(vesafb_mod_CFLAGS): Likewise.
(vbe_list_modes_mod_SOURCES): Likewise.
(vbe_list_modes_mod_CFLAGS): Likewise.
(vbe_test_mod_SOURCES): Likewise.
(vbe_test_mod_CFLAGS): Likewise.
2005-08-14 Yoshinori K. Okuji <okuji@enbug.org>
* normal/command.c (grub_command_execute): If INTERACTIVE is

View file

@ -32,6 +32,8 @@ boot/powerpc/ieee1275/cmain.c
boot/powerpc/ieee1275/crt0.S
commands/i386/pc/halt.c
commands/i386/pc/reboot.c
commands/i386/pc/vbe_list_modes.c
commands/i386/pc/vbe_test.c
commands/ieee1275/halt.c
commands/ieee1275/reboot.c
commands/ieee1275/suspend.c
@ -163,6 +165,7 @@ partmap/apple.c
partmap/pc.c
partmap/sun.c
term/i386/pc/console.c
term/i386/pc/vesafb.c
term/i386/pc/vga.c
term/ieee1275/ofconsole.c
util/i386/pc/biosdisk.c
@ -180,3 +183,4 @@ util/grub-emu.c
util/misc.c
util/resolve.c
util/unifont2pff.rb
video/i386/pc/vbe.c

View file

@ -0,0 +1,143 @@
/* vbe_list_modes.c - command to list compatible VBE video modes. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005 Free Software Foundation, Inc.
*
* GRUB is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/normal.h>
#include <grub/dl.h>
#include <grub/arg.h>
#include <grub/env.h>
#include <grub/misc.h>
#include <grub/machine/init.h>
#include <grub/machine/vbe.h>
static void *
real2pm(grub_vbe_farptr_t ptr)
{
return (void *)((((unsigned long)ptr & 0xFFFF0000) >> 12UL) +
((unsigned long)ptr & 0x0000FFFF));
}
static grub_err_t
grub_cmd_vbe_list_modes(struct grub_arg_list *state __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char **args __attribute__ ((unused)))
{
struct grub_vbe_info_block controller_info;
struct grub_vbe_mode_info_block mode_info_tmp;
grub_uint32_t use_mode = GRUB_VBE_DEFAULT_VIDEO_MODE;
grub_uint16_t *sptr;
grub_uint32_t rc;
char *modevar;
grub_printf ("List of compatible video modes:\n");
rc = grub_vbe_probe (&controller_info);
if (rc != GRUB_ERR_NONE)
{
grub_printf ("VESA BIOS Extension not detected!\n");
return rc;
}
sptr = real2pm (controller_info.video_mode_ptr);
/* Walk thru all video modes listed. */
for (;*sptr != 0xFFFF; sptr++)
{
int valid_mode = 1;
rc = grub_vbe_get_video_mode_info (*sptr, &mode_info_tmp);
if (rc != GRUB_ERR_NONE) continue;
if ((mode_info_tmp.mode_attributes & 0x080) == 0)
{
/* We support only linear frame buffer modes. */
continue;
}
if ((mode_info_tmp.mode_attributes & 0x010) == 0)
{
/* We allow only graphical modes. */
continue;
}
switch(mode_info_tmp.memory_model)
{
case 0x04:
case 0x06:
break;
default:
valid_mode = 0;
break;
}
if (valid_mode == 0) continue;
grub_printf ("0x%03x: %d x %d x %d bpp\n",
*sptr,
mode_info_tmp.x_resolution,
mode_info_tmp.y_resolution,
mode_info_tmp.bits_per_pixel);
}
/* Check existence of vbe_mode environment variable. */
modevar = grub_env_get ("vbe_mode");
/* Check existence of vbe_mode environment variable. */
modevar = grub_env_get ("vbe_mode");
if (modevar != 0)
{
unsigned long value = 0;
if ((grub_strncmp (modevar, "0x", 2) == 0) ||
(grub_strncmp (modevar, "0X", 2) == 0))
{
/* Convert HEX mode number. */
value = grub_strtoul (modevar + 2, 0, 16);
}
else
{
/* Convert DEC mode number. */
value = grub_strtoul (modevar, 0, 10);
}
if (value != 0)
{
use_mode = value;
}
}
grub_printf ("Configured VBE mode (vbe_mode) = 0x%03x\n", use_mode);
return 0;
}
GRUB_MOD_INIT
{
(void)mod; /* To stop warning. */
grub_register_command ("vbe_list_modes", grub_cmd_vbe_list_modes, GRUB_COMMAND_FLAG_BOTH,
"vbe_list_modes", "List compatible VESA BIOS extension video modes.", 0);
}
GRUB_MOD_FINI
{
grub_unregister_command ("vbe_list_modes");
}

195
commands/i386/pc/vbe_test.c Normal file
View file

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

View file

@ -1141,7 +1141,8 @@ pkgdata_MODULES = _chain.mod _linux.mod linux.mod fat.mod ufs.mod \
font.mod _multiboot.mod ls.mod boot.mod cmp.mod cat.mod \
terminal.mod fshelp.mod chain.mod multiboot.mod amiga.mod \
apple.mod pc.mod sun.mod loopback.mod reboot.mod halt.mod \
help.mod default.mod timeout.mod configfile.mod
help.mod default.mod timeout.mod configfile.mod vbe.mod \
vesafb.mod vbe_test.mod vbe_list_modes.mod
# For _chain.mod.
_chain_mod_SOURCES = loader/i386/pc/chainloader.c
@ -2951,6 +2952,206 @@ fs-configfile.lst: commands/configfile.c genfslist.sh
configfile_mod_CFLAGS = $(COMMON_CFLAGS)
# For vbe.mod.
vbe_mod_SOURCES = video/i386/pc/vbe.c
CLEANFILES += vbe.mod mod-vbe.o mod-vbe.c pre-vbe.o vbe_mod-video_i386_pc_vbe.o def-vbe.lst und-vbe.lst
MOSTLYCLEANFILES += vbe_mod-video_i386_pc_vbe.d
DEFSYMFILES += def-vbe.lst
UNDSYMFILES += und-vbe.lst
vbe.mod: pre-vbe.o mod-vbe.o
-rm -f $@
$(LD) -r -d -o $@ $^
$(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
pre-vbe.o: vbe_mod-video_i386_pc_vbe.o
-rm -f $@
$(LD) -r -d -o $@ $^
mod-vbe.o: mod-vbe.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(vbe_mod_CFLAGS) -c -o $@ $<
mod-vbe.c: moddep.lst genmodsrc.sh
sh $(srcdir)/genmodsrc.sh 'vbe' $< > $@ || (rm -f $@; exit 1)
def-vbe.lst: pre-vbe.o
$(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 vbe/' > $@
und-vbe.lst: pre-vbe.o
echo 'vbe' > $@
$(NM) -u -P -p $< | cut -f1 -d' ' >> $@
vbe_mod-video_i386_pc_vbe.o: video/i386/pc/vbe.c
$(CC) -Ivideo/i386/pc -I$(srcdir)/video/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_mod_CFLAGS) -c -o $@ $<
vbe_mod-video_i386_pc_vbe.d: video/i386/pc/vbe.c
set -e; $(CC) -Ivideo/i386/pc -I$(srcdir)/video/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_mod_CFLAGS) -M $< | sed 's,vbe\.o[ :]*,vbe_mod-video_i386_pc_vbe.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
-include vbe_mod-video_i386_pc_vbe.d
CLEANFILES += cmd-vbe.lst fs-vbe.lst
COMMANDFILES += cmd-vbe.lst
FSFILES += fs-vbe.lst
cmd-vbe.lst: video/i386/pc/vbe.c gencmdlist.sh
set -e; $(CC) -Ivideo/i386/pc -I$(srcdir)/video/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh vbe > $@ || (rm -f $@; exit 1)
fs-vbe.lst: video/i386/pc/vbe.c genfslist.sh
set -e; $(CC) -Ivideo/i386/pc -I$(srcdir)/video/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh vbe > $@ || (rm -f $@; exit 1)
vbe_mod_CFLAGS = $(COMMON_CFLAGS)
# For vesafb.mod.
vesafb_mod_SOURCES = term/i386/pc/vesafb.c
CLEANFILES += vesafb.mod mod-vesafb.o mod-vesafb.c pre-vesafb.o vesafb_mod-term_i386_pc_vesafb.o def-vesafb.lst und-vesafb.lst
MOSTLYCLEANFILES += vesafb_mod-term_i386_pc_vesafb.d
DEFSYMFILES += def-vesafb.lst
UNDSYMFILES += und-vesafb.lst
vesafb.mod: pre-vesafb.o mod-vesafb.o
-rm -f $@
$(LD) -r -d -o $@ $^
$(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
pre-vesafb.o: vesafb_mod-term_i386_pc_vesafb.o
-rm -f $@
$(LD) -r -d -o $@ $^
mod-vesafb.o: mod-vesafb.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(vesafb_mod_CFLAGS) -c -o $@ $<
mod-vesafb.c: moddep.lst genmodsrc.sh
sh $(srcdir)/genmodsrc.sh 'vesafb' $< > $@ || (rm -f $@; exit 1)
def-vesafb.lst: pre-vesafb.o
$(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 vesafb/' > $@
und-vesafb.lst: pre-vesafb.o
echo 'vesafb' > $@
$(NM) -u -P -p $< | cut -f1 -d' ' >> $@
vesafb_mod-term_i386_pc_vesafb.o: term/i386/pc/vesafb.c
$(CC) -Iterm/i386/pc -I$(srcdir)/term/i386/pc $(CPPFLAGS) $(CFLAGS) $(vesafb_mod_CFLAGS) -c -o $@ $<
vesafb_mod-term_i386_pc_vesafb.d: term/i386/pc/vesafb.c
set -e; $(CC) -Iterm/i386/pc -I$(srcdir)/term/i386/pc $(CPPFLAGS) $(CFLAGS) $(vesafb_mod_CFLAGS) -M $< | sed 's,vesafb\.o[ :]*,vesafb_mod-term_i386_pc_vesafb.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
-include vesafb_mod-term_i386_pc_vesafb.d
CLEANFILES += cmd-vesafb.lst fs-vesafb.lst
COMMANDFILES += cmd-vesafb.lst
FSFILES += fs-vesafb.lst
cmd-vesafb.lst: term/i386/pc/vesafb.c gencmdlist.sh
set -e; $(CC) -Iterm/i386/pc -I$(srcdir)/term/i386/pc $(CPPFLAGS) $(CFLAGS) $(vesafb_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh vesafb > $@ || (rm -f $@; exit 1)
fs-vesafb.lst: term/i386/pc/vesafb.c genfslist.sh
set -e; $(CC) -Iterm/i386/pc -I$(srcdir)/term/i386/pc $(CPPFLAGS) $(CFLAGS) $(vesafb_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh vesafb > $@ || (rm -f $@; exit 1)
vesafb_mod_CFLAGS = $(COMMON_CFLAGS)
# For vbe_list_modes.mod.
vbe_list_modes_mod_SOURCES = commands/i386/pc/vbe_list_modes.c
CLEANFILES += vbe_list_modes.mod mod-vbe_list_modes.o mod-vbe_list_modes.c pre-vbe_list_modes.o vbe_list_modes_mod-commands_i386_pc_vbe_list_modes.o def-vbe_list_modes.lst und-vbe_list_modes.lst
MOSTLYCLEANFILES += vbe_list_modes_mod-commands_i386_pc_vbe_list_modes.d
DEFSYMFILES += def-vbe_list_modes.lst
UNDSYMFILES += und-vbe_list_modes.lst
vbe_list_modes.mod: pre-vbe_list_modes.o mod-vbe_list_modes.o
-rm -f $@
$(LD) -r -d -o $@ $^
$(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
pre-vbe_list_modes.o: vbe_list_modes_mod-commands_i386_pc_vbe_list_modes.o
-rm -f $@
$(LD) -r -d -o $@ $^
mod-vbe_list_modes.o: mod-vbe_list_modes.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(vbe_list_modes_mod_CFLAGS) -c -o $@ $<
mod-vbe_list_modes.c: moddep.lst genmodsrc.sh
sh $(srcdir)/genmodsrc.sh 'vbe_list_modes' $< > $@ || (rm -f $@; exit 1)
def-vbe_list_modes.lst: pre-vbe_list_modes.o
$(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 vbe_list_modes/' > $@
und-vbe_list_modes.lst: pre-vbe_list_modes.o
echo 'vbe_list_modes' > $@
$(NM) -u -P -p $< | cut -f1 -d' ' >> $@
vbe_list_modes_mod-commands_i386_pc_vbe_list_modes.o: commands/i386/pc/vbe_list_modes.c
$(CC) -Icommands/i386/pc -I$(srcdir)/commands/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_list_modes_mod_CFLAGS) -c -o $@ $<
vbe_list_modes_mod-commands_i386_pc_vbe_list_modes.d: commands/i386/pc/vbe_list_modes.c
set -e; $(CC) -Icommands/i386/pc -I$(srcdir)/commands/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_list_modes_mod_CFLAGS) -M $< | sed 's,vbe_list_modes\.o[ :]*,vbe_list_modes_mod-commands_i386_pc_vbe_list_modes.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
-include vbe_list_modes_mod-commands_i386_pc_vbe_list_modes.d
CLEANFILES += cmd-vbe_list_modes.lst fs-vbe_list_modes.lst
COMMANDFILES += cmd-vbe_list_modes.lst
FSFILES += fs-vbe_list_modes.lst
cmd-vbe_list_modes.lst: commands/i386/pc/vbe_list_modes.c gencmdlist.sh
set -e; $(CC) -Icommands/i386/pc -I$(srcdir)/commands/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_list_modes_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh vbe_list_modes > $@ || (rm -f $@; exit 1)
fs-vbe_list_modes.lst: commands/i386/pc/vbe_list_modes.c genfslist.sh
set -e; $(CC) -Icommands/i386/pc -I$(srcdir)/commands/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_list_modes_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh vbe_list_modes > $@ || (rm -f $@; exit 1)
vbe_list_modes_mod_CFLAGS = $(COMMON_CFLAGS)
# For vbe_test.mod.
vbe_test_mod_SOURCES = commands/i386/pc/vbe_test.c
CLEANFILES += vbe_test.mod mod-vbe_test.o mod-vbe_test.c pre-vbe_test.o vbe_test_mod-commands_i386_pc_vbe_test.o def-vbe_test.lst und-vbe_test.lst
MOSTLYCLEANFILES += vbe_test_mod-commands_i386_pc_vbe_test.d
DEFSYMFILES += def-vbe_test.lst
UNDSYMFILES += und-vbe_test.lst
vbe_test.mod: pre-vbe_test.o mod-vbe_test.o
-rm -f $@
$(LD) -r -d -o $@ $^
$(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
pre-vbe_test.o: vbe_test_mod-commands_i386_pc_vbe_test.o
-rm -f $@
$(LD) -r -d -o $@ $^
mod-vbe_test.o: mod-vbe_test.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(vbe_test_mod_CFLAGS) -c -o $@ $<
mod-vbe_test.c: moddep.lst genmodsrc.sh
sh $(srcdir)/genmodsrc.sh 'vbe_test' $< > $@ || (rm -f $@; exit 1)
def-vbe_test.lst: pre-vbe_test.o
$(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 vbe_test/' > $@
und-vbe_test.lst: pre-vbe_test.o
echo 'vbe_test' > $@
$(NM) -u -P -p $< | cut -f1 -d' ' >> $@
vbe_test_mod-commands_i386_pc_vbe_test.o: commands/i386/pc/vbe_test.c
$(CC) -Icommands/i386/pc -I$(srcdir)/commands/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_test_mod_CFLAGS) -c -o $@ $<
vbe_test_mod-commands_i386_pc_vbe_test.d: commands/i386/pc/vbe_test.c
set -e; $(CC) -Icommands/i386/pc -I$(srcdir)/commands/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_test_mod_CFLAGS) -M $< | sed 's,vbe_test\.o[ :]*,vbe_test_mod-commands_i386_pc_vbe_test.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
-include vbe_test_mod-commands_i386_pc_vbe_test.d
CLEANFILES += cmd-vbe_test.lst fs-vbe_test.lst
COMMANDFILES += cmd-vbe_test.lst
FSFILES += fs-vbe_test.lst
cmd-vbe_test.lst: commands/i386/pc/vbe_test.c gencmdlist.sh
set -e; $(CC) -Icommands/i386/pc -I$(srcdir)/commands/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_test_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh vbe_test > $@ || (rm -f $@; exit 1)
fs-vbe_test.lst: commands/i386/pc/vbe_test.c genfslist.sh
set -e; $(CC) -Icommands/i386/pc -I$(srcdir)/commands/i386/pc $(CPPFLAGS) $(CFLAGS) $(vbe_test_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh vbe_test > $@ || (rm -f $@; exit 1)
vbe_test_mod_CFLAGS = $(COMMON_CFLAGS)
CLEANFILES += moddep.lst command.lst fs.lst
pkgdata_DATA += moddep.lst command.lst fs.lst
moddep.lst: $(DEFSYMFILES) $(UNDSYMFILES) genmoddep

View file

@ -111,7 +111,8 @@ pkgdata_MODULES = _chain.mod _linux.mod linux.mod fat.mod ufs.mod \
font.mod _multiboot.mod ls.mod boot.mod cmp.mod cat.mod \
terminal.mod fshelp.mod chain.mod multiboot.mod amiga.mod \
apple.mod pc.mod sun.mod loopback.mod reboot.mod halt.mod \
help.mod default.mod timeout.mod configfile.mod
help.mod default.mod timeout.mod configfile.mod vbe.mod \
vesafb.mod vbe_test.mod vbe_list_modes.mod
# For _chain.mod.
_chain_mod_SOURCES = loader/i386/pc/chainloader.c
@ -251,3 +252,19 @@ timeout_mod_CFLAGS = $(COMMON_CFLAGS)
# For configfile.mod
configfile_mod_SOURCES = commands/configfile.c
configfile_mod_CFLAGS = $(COMMON_CFLAGS)
# For vbe.mod.
vbe_mod_SOURCES = video/i386/pc/vbe.c
vbe_mod_CFLAGS = $(COMMON_CFLAGS)
# For vesafb.mod.
vesafb_mod_SOURCES = term/i386/pc/vesafb.c
vesafb_mod_CFLAGS = $(COMMON_CFLAGS)
# For vbe_list_modes.mod.
vbe_list_modes_mod_SOURCES = commands/i386/pc/vbe_list_modes.c
vbe_list_modes_mod_CFLAGS = $(COMMON_CFLAGS)
# For vbe_test.mod.
vbe_test_mod_SOURCES = commands/i386/pc/vbe_test.c
vbe_test_mod_CFLAGS = $(COMMON_CFLAGS)

View file

@ -22,6 +22,10 @@
#include <grub/symbol.h>
#include <grub/types.h>
#include <grub/err.h>
/* Default video mode to be used. */
#define GRUB_VBE_DEFAULT_VIDEO_MODE 0x101
/* Note:
@ -140,6 +144,8 @@ struct grub_vbe_palette_data
grub_uint8_t aligment;
} __attribute__ ((packed));
/* Prototypes for kernel real mode thunks. */
/* Call VESA BIOS 0x4f00 to get VBE Controller Information, return status. */
grub_vbe_status_t EXPORT_FUNC(grub_vbe_get_controller_info) (struct grub_vbe_info_block *controller_info);
@ -181,4 +187,13 @@ grub_vbe_status_t EXPORT_FUNC(grub_vbe_set_palette_data) (grub_uint32_t color_co
grub_uint32_t start_index,
struct grub_vbe_palette_data *palette_data);
/* Prototypes for helper functions. */
grub_err_t grub_vbe_probe (struct grub_vbe_info_block *info_block);
grub_err_t grub_vbe_set_video_mode (grub_uint32_t mode, struct grub_vbe_mode_info_block *mode_info);
grub_err_t grub_vbe_get_video_mode (grub_uint32_t *mode);
grub_err_t grub_vbe_get_video_mode_info (grub_uint32_t mode, struct grub_vbe_mode_info_block *mode_info);
void grub_vbe_set_pixel_rgb (grub_uint32_t x, grub_uint32_t y, grub_uint8_t red, grub_uint8_t green, grub_uint8_t blue);
void grub_vbe_set_pixel_index (grub_uint32_t x, grub_uint32_t y, grub_uint8_t color);
#endif /* ! GRUB_VBE_MACHINE_HEADER */

634
term/i386/pc/vesafb.c Normal file
View file

@ -0,0 +1,634 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/machine/memory.h>
#include <grub/machine/vga.h>
#include <grub/machine/vbe.h>
#include <grub/machine/console.h>
#include <grub/term.h>
#include <grub/types.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/normal.h>
#include <grub/font.h>
#include <grub/arg.h>
#include <grub/mm.h>
#include <grub/env.h>
#define DEFAULT_CHAR_WIDTH 8
#define DEFAULT_CHAR_HEIGHT 16
#define DEFAULT_FG_COLOR 0xa
#define DEFAULT_BG_COLOR 0x0
struct grub_colored_char
{
/* An Unicode codepoint. */
grub_uint32_t code;
/* Color indexes. */
unsigned char fg_color;
unsigned char bg_color;
/* The width of this character minus one. */
unsigned char width;
/* The column index of this character. */
unsigned char index;
};
struct grub_virtual_screen
{
/* Dimensions of the virual screen. */
grub_uint32_t width;
grub_uint32_t height;
/* Offset in the display. */
grub_uint32_t offset_x;
grub_uint32_t offset_y;
/* TTY Character sizes. */
grub_uint32_t char_width;
grub_uint32_t char_height;
/* Virtual screen TTY size. */
grub_uint32_t columns;
grub_uint32_t rows;
/* Current cursor details. */
grub_uint32_t cursor_x;
grub_uint32_t cursor_y;
grub_uint8_t cursor_state;
grub_uint8_t fg_color;
grub_uint8_t bg_color;
/* Text buffer for virual screen. Contains (columns * rows) number
of entries. */
struct grub_colored_char *text_buffer;
};
/* Make seure text buffer is not marked as allocated. */
static struct grub_virtual_screen virtual_screen =
{
.text_buffer = 0
};
static grub_dl_t my_mod;
static unsigned char *vga_font = 0;
static grub_uint32_t old_mode = 0;
static struct grub_vbe_mode_info_block mode_info;
static grub_uint8_t *framebuffer = 0;
static grub_uint32_t bytes_per_scan_line = 0;
static void
grub_virtual_screen_free (void)
{
/* If virtual screen has been allocated, free it. */
if (virtual_screen.text_buffer != 0)
{
grub_free (virtual_screen.text_buffer);
}
/* Reset virtual screen data. */
grub_memset (&virtual_screen, 0, sizeof(virtual_screen));
}
static grub_err_t
grub_virtual_screen_setup (grub_uint32_t width,
grub_uint32_t height)
{
/* Free old virtual screen. */
grub_virtual_screen_free ();
/* Initialize with default data. */
virtual_screen.width = width;
virtual_screen.height = height;
virtual_screen.offset_x = 0;
virtual_screen.offset_y = 0;
virtual_screen.char_width = DEFAULT_CHAR_WIDTH;
virtual_screen.char_height = DEFAULT_CHAR_HEIGHT;
virtual_screen.cursor_x = 0;
virtual_screen.cursor_y = 0;
virtual_screen.cursor_state = 1;
virtual_screen.fg_color = DEFAULT_FG_COLOR;
virtual_screen.bg_color = DEFAULT_BG_COLOR;
/* Calculate size of text buffer. */
virtual_screen.columns = virtual_screen.width / virtual_screen.char_width;
virtual_screen.rows = virtual_screen.height / virtual_screen.char_height;
/* Allocate memory for text buffer. */
virtual_screen.text_buffer =
(struct grub_colored_char *)grub_malloc (virtual_screen.columns *
virtual_screen.rows *
sizeof(struct grub_colored_char));
if (virtual_screen.text_buffer == 0)
{
return GRUB_ERR_OUT_OF_MEMORY;
}
return GRUB_ERR_NONE;
}
static grub_err_t
grub_vesafb_init (void)
{
grub_uint32_t rc;
grub_uint32_t use_mode = GRUB_VBE_DEFAULT_VIDEO_MODE;
struct grub_vbe_info_block controller_info;
char *modevar;
/* Use fonts from VGA bios. */
vga_font = grub_vga_get_font ();
/* Check if we have VESA BIOS installed. */
rc = grub_vbe_probe (&controller_info);
if (rc != GRUB_ERR_NONE)
{
return rc;
}
/* Check existence of vbe_mode environment variable. */
modevar = grub_env_get ("vbe_mode");
if (modevar != 0)
{
unsigned long value = 0;
if ((grub_strncmp (modevar, "0x", 2) == 0) ||
(grub_strncmp (modevar, "0X", 2) == 0))
{
/* Convert HEX mode number. */
value = grub_strtoul (modevar + 2, 0, 16);
}
else
{
/* Convert DEC mode number. */
value = grub_strtoul (modevar, 0, 10);
}
if (value != 0)
{
use_mode = value;
}
}
/* Store initial video mode. */
rc = grub_vbe_get_video_mode (&old_mode);
/* Setup desired graphics mode. */
rc = grub_vbe_set_video_mode (use_mode, &mode_info);
if (rc != GRUB_ERR_NONE)
{
return rc;
}
/* Determine framebuffer and bytes per scan line. */
framebuffer = (grub_uint8_t *)mode_info.phys_base_addr;
if (controller_info.version >= 0x300)
{
bytes_per_scan_line = mode_info.lin_bytes_per_scan_line;
}
else
{
bytes_per_scan_line = mode_info.bytes_per_scan_line;
}
/* Create virtual screen. */
rc = grub_virtual_screen_setup (mode_info.x_resolution,
mode_info.y_resolution);
if (rc != GRUB_ERR_NONE)
{
grub_vbe_set_video_mode (old_mode, 0);
return rc;
}
/* Make sure frame buffer is black. */
grub_memset (framebuffer,
0,
bytes_per_scan_line * mode_info.y_resolution);
return GRUB_ERR_NONE;
}
static grub_err_t
grub_vesafb_fini (void)
{
grub_virtual_screen_free ();
grub_vbe_set_video_mode (old_mode, 0);
return GRUB_ERR_NONE;
}
static int
grub_virtual_screen_get_glyph (grub_uint32_t code,
unsigned char bitmap[32],
unsigned *width)
{
if (code > 0x7f)
{
/* Map some unicode characters to the VGA font, if possible. */
switch (code)
{
case 0x2190: /* left arrow */
code = 0x1b;
break;
case 0x2191: /* up arrow */
code = 0x18;
break;
case 0x2192: /* right arrow */
code = 0x1a;
break;
case 0x2193: /* down arrow */
code = 0x19;
break;
case 0x2501: /* horizontal line */
code = 0xc4;
break;
case 0x2503: /* vertical line */
code = 0xb3;
break;
case 0x250F: /* upper-left corner */
code = 0xda;
break;
case 0x2513: /* upper-right corner */
code = 0xbf;
break;
case 0x2517: /* lower-left corner */
code = 0xc0;
break;
case 0x251B: /* lower-right corner */
code = 0xd9;
break;
default:
return grub_font_get_glyph (code, bitmap, width);
}
}
if (bitmap)
grub_memcpy (bitmap,
vga_font + code * virtual_screen.char_height,
virtual_screen.char_height);
*width = 1;
return 1;
}
static void
grub_virtual_screen_invalidate_char (struct grub_colored_char *p)
{
p->code = 0xFFFF;
if (p->width)
{
struct grub_colored_char *q;
for (q = p + 1; q <= p + p->width; q++)
{
q->code = 0xFFFF;
q->width = 0;
q->index = 0;
}
}
p->width = 0;
}
static void
write_char (void)
{
struct grub_colored_char *p;
unsigned char bitmap[32];
unsigned width;
p = (virtual_screen.text_buffer +
virtual_screen.cursor_x +
(virtual_screen.cursor_y * virtual_screen.columns));
p -= p->index;
if (! grub_virtual_screen_get_glyph (p->code, bitmap, &width))
{
grub_virtual_screen_invalidate_char (p);
width = 0;
}
unsigned y;
unsigned offset;
for (y = 0, offset = 0;
y < virtual_screen.char_height;
y++, offset++)
{
unsigned i;
for (i = 0;
(i < width * virtual_screen.char_width) && (offset < 32);
i++)
{
unsigned char color;
if (bitmap[offset] & (1<<(8-i)))
{
color = p->fg_color;
}
else
{
color = p->bg_color;
}
grub_vbe_set_pixel_index(i + (virtual_screen.cursor_x * virtual_screen.char_width),
y + (virtual_screen.cursor_y * virtual_screen.char_height),
color);
}
}
}
static void
write_cursor (void)
{
grub_uint32_t x;
grub_uint32_t y;
for (y = ((virtual_screen.cursor_y + 1) * virtual_screen.char_height) - 3;
y < ((virtual_screen.cursor_y + 1) * virtual_screen.char_height) - 1;
y++)
{
for (x = virtual_screen.cursor_x * virtual_screen.char_width;
x < (virtual_screen.cursor_x + 1) * virtual_screen.char_width;
x++)
{
grub_vbe_set_pixel_index(x, y, 10);
}
}
}
static void
scroll_up (void)
{
grub_uint32_t i;
/* Scroll text buffer with one line to up. */
grub_memmove (virtual_screen.text_buffer,
virtual_screen.text_buffer + virtual_screen.columns,
sizeof (struct grub_colored_char) *
virtual_screen.columns *
(virtual_screen.rows - 1));
/* Clear last line in text buffer. */
for (i = virtual_screen.columns * (virtual_screen.rows - 1);
i < virtual_screen.columns * virtual_screen.rows;
i++)
{
virtual_screen.text_buffer[i].code = ' ';
virtual_screen.text_buffer[i].fg_color = 0;
virtual_screen.text_buffer[i].bg_color = 0;
virtual_screen.text_buffer[i].width = 0;
virtual_screen.text_buffer[i].index = 0;
}
/* Scroll frambuffer with one line to up. */
grub_memmove (framebuffer,
framebuffer + bytes_per_scan_line * virtual_screen.char_height,
bytes_per_scan_line *
(mode_info.y_resolution - virtual_screen.char_height));
/* Clear last line in framebuffer. */
grub_memset (framebuffer +
(bytes_per_scan_line *
(mode_info.y_resolution - virtual_screen.char_height)),
0,
bytes_per_scan_line * virtual_screen.char_height);
}
static void
grub_vesafb_putchar (grub_uint32_t c)
{
if (c == '\a')
/* FIXME */
return;
if (c == '\b' || c == '\n' || c == '\r')
{
/* Erase current cursor, if any. */
if (virtual_screen.cursor_state)
write_char ();
switch (c)
{
case '\b':
if (virtual_screen.cursor_x > 0)
virtual_screen.cursor_x--;
break;
case '\n':
if (virtual_screen.cursor_y >= virtual_screen.rows - 1)
scroll_up ();
else
virtual_screen.cursor_y++;
break;
case '\r':
virtual_screen.cursor_x = 0;
break;
}
if (virtual_screen.cursor_state)
write_cursor ();
}
else
{
unsigned width;
struct grub_colored_char *p;
grub_virtual_screen_get_glyph (c, 0, &width);
if (virtual_screen.cursor_x + width > virtual_screen.columns)
grub_putchar ('\n');
p = virtual_screen.text_buffer +
virtual_screen.cursor_x +
virtual_screen.cursor_y * virtual_screen.columns;
p->code = c;
p->fg_color = virtual_screen.fg_color;
p->bg_color = virtual_screen.bg_color;
p->width = width - 1;
p->index = 0;
if (width > 1)
{
unsigned i;
for (i = 1; i < width; i++)
{
p[i].code = ' ';
p[i].width = width - 1;
p[i].index = i;
}
}
write_char ();
virtual_screen.cursor_x += width;
if (virtual_screen.cursor_x >= virtual_screen.columns)
{
virtual_screen.cursor_x = 0;
if (virtual_screen.cursor_y >= virtual_screen.rows - 1)
scroll_up ();
else
virtual_screen.cursor_y++;
}
if (virtual_screen.cursor_state)
write_cursor ();
}
}
static grub_uint16_t
grub_virtual_screen_getwh (void)
{
return (virtual_screen.columns << 8) | virtual_screen.rows;
}
static grub_uint16_t
grub_virtual_screen_getxy (void)
{
return ((virtual_screen.cursor_x << 8) | virtual_screen.cursor_y);
}
static void
grub_vesafb_gotoxy (grub_uint8_t x, grub_uint8_t y)
{
if (x >= virtual_screen.columns || y >= virtual_screen.rows)
{
grub_error (GRUB_ERR_OUT_OF_RANGE, "invalid point (%u,%u)",
(unsigned) x, (unsigned) y);
return;
}
if (virtual_screen.cursor_state)
write_char ();
virtual_screen.cursor_x = x;
virtual_screen.cursor_y = y;
if (virtual_screen.cursor_state)
write_cursor ();
}
static void
grub_virtual_screen_cls (void)
{
grub_uint32_t i;
for (i = 0; i < virtual_screen.columns * virtual_screen.rows; i++)
{
virtual_screen.text_buffer[i].code = ' ';
virtual_screen.text_buffer[i].fg_color = 0;
virtual_screen.text_buffer[i].bg_color = 0;
virtual_screen.text_buffer[i].width = 0;
virtual_screen.text_buffer[i].index = 0;
}
virtual_screen.cursor_x = virtual_screen.cursor_y = 0;
}
static void
grub_vesafb_cls (void)
{
grub_virtual_screen_cls ();
grub_memset (framebuffer,
0,
mode_info.y_resolution * bytes_per_scan_line);
}
static void
grub_virtual_screen_setcolorstate (grub_term_color_state state)
{
switch (state)
{
case GRUB_TERM_COLOR_STANDARD:
case GRUB_TERM_COLOR_NORMAL:
virtual_screen.fg_color = DEFAULT_FG_COLOR;
virtual_screen.bg_color = DEFAULT_BG_COLOR;
break;
case GRUB_TERM_COLOR_HIGHLIGHT:
virtual_screen.fg_color = DEFAULT_BG_COLOR;
virtual_screen.bg_color = DEFAULT_FG_COLOR;
break;
default:
break;
}
}
static void
grub_virtual_screen_setcolor (grub_uint8_t normal_color __attribute__ ((unused)),
grub_uint8_t highlight_color __attribute__ ((unused)))
{
/* FIXME */
}
static void
grub_vesafb_setcursor (int on)
{
if (virtual_screen.cursor_state != on)
{
if (virtual_screen.cursor_state)
write_char ();
else
write_cursor ();
virtual_screen.cursor_state = on;
}
}
static struct grub_term grub_vesafb_term =
{
.name = "vesafb",
.init = grub_vesafb_init,
.fini = grub_vesafb_fini,
.putchar = grub_vesafb_putchar,
.checkkey = grub_console_checkkey,
.getkey = grub_console_getkey,
.getwh = grub_virtual_screen_getwh,
.getxy = grub_virtual_screen_getxy,
.gotoxy = grub_vesafb_gotoxy,
.cls = grub_vesafb_cls,
.setcolorstate = grub_virtual_screen_setcolorstate,
.setcolor = grub_virtual_screen_setcolor,
.setcursor = grub_vesafb_setcursor,
.flags = 0,
.next = 0
};
GRUB_MOD_INIT
{
my_mod = mod;
grub_term_register (&grub_vesafb_term);
}
GRUB_MOD_FINI
{
grub_term_unregister (&grub_vesafb_term);
}

392
video/i386/pc/vbe.c Normal file
View file

@ -0,0 +1,392 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/err.h>
#include <grub/machine/memory.h>
#include <grub/machine/vga.h>
#include <grub/machine/vbe.h>
#include <grub/machine/console.h>
#include <grub/term.h>
#include <grub/types.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/normal.h>
#include <grub/font.h>
#include <grub/arg.h>
#include <grub/mm.h>
#include <grub/env.h>
/* Specify "standard" VGA palette, some video cards may
need this and this will also be used when using RGB modes. */
static struct grub_vbe_palette_data vga_colors[16] =
{
// {B, G, R, A}
{0x00, 0x00, 0x00, 0x00}, // 0 = black
{0xA8, 0x00, 0x00, 0x00}, // 1 = blue
{0x00, 0xA8, 0x00, 0x00}, // 2 = green
{0xA8, 0xA8, 0x00, 0x00}, // 3 = cyan
{0x00, 0x00, 0xA8, 0x00}, // 4 = red
{0xA8, 0x00, 0xA8, 0x00}, // 5 = magenta
{0x00, 0x54, 0xA8, 0x00}, // 6 = brown
{0xA8, 0xA8, 0xA8, 0x00}, // 7 = ligth gray
{0x54, 0x54, 0x54, 0x00}, // 8 = dark gray
{0xFE, 0x54, 0x54, 0x00}, // 9 = bright blue
{0x54, 0xFE, 0x54, 0x00}, // 10 = bright green
{0xFE, 0xFE, 0x54, 0x00}, // 11 = bright cyan
{0x54, 0x54, 0xFE, 0x00}, // 12 = bright red
{0xFE, 0x54, 0xFE, 0x00}, // 13 = bright magenta
{0x54, 0xFE, 0xFE, 0x00}, // 14 = yellow
{0xFE, 0xFE, 0xFE, 0x00} // 15 = white
};
static int vbe_detected = -1;
static int index_color_mode = 0;
static struct grub_vbe_info_block controller_info;
static struct grub_vbe_mode_info_block active_mode_info;
static grub_uint32_t active_mode = 0;
static grub_uint8_t *framebuffer = 0;
static grub_uint32_t bytes_per_scan_line = 0;
grub_err_t
grub_vbe_probe (struct grub_vbe_info_block *info_block)
{
struct grub_vbe_info_block *vbe_ib;
grub_uint32_t rc;
/* Clear caller's controller info block. */
if (info_block != 0)
{
grub_memset (info_block, 0, sizeof(struct grub_vbe_info_block));
}
/* Do not probe more than one time. */
if (vbe_detected != -1)
{
if (vbe_detected == 1)
{
/* Make copy of controller info block to caller. */
if (info_block != 0)
{
grub_memcpy (info_block,
&controller_info,
sizeof(struct grub_vbe_info_block));
}
return GRUB_ERR_NONE;
}
else
{
return GRUB_ERR_BAD_DEVICE;
}
}
/* Clear old copy of controller info block. */
grub_memset (&controller_info, 0, sizeof(struct grub_vbe_info_block));
/* Mark VESA BIOS extension as undetected. */
vbe_detected = 0;
/* Use low memory scratch area as temporary storage for VESA BIOS call. */
vbe_ib = (struct grub_vbe_info_block *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
/* Prepare info block. */
grub_memset (vbe_ib, 0, sizeof(struct grub_vbe_info_block));
vbe_ib->signature[0] = 'V';
vbe_ib->signature[1] = 'B';
vbe_ib->signature[2] = 'E';
vbe_ib->signature[3] = '2';
/* Try to get controller info block. */
rc = grub_vbe_get_controller_info (vbe_ib);
if (rc != 0x004F)
{
return GRUB_ERR_BAD_DEVICE;
}
/* Copy it for later usage. */
grub_memcpy (&controller_info,
vbe_ib,
sizeof(struct grub_vbe_info_block));
/* Copy it for caller. */
grub_memcpy (info_block,
vbe_ib,
sizeof(struct grub_vbe_info_block));
/* Mark VESA BIOS extension as detected. */
vbe_detected = 1;
return GRUB_ERR_NONE;
}
grub_err_t
grub_vbe_set_video_mode (grub_uint32_t mode,
struct grub_vbe_mode_info_block *mode_info)
{
grub_uint32_t rc;
/* If grub_vesafb_probe has not been called or no VBE, abort. */
if (vbe_detected == 0)
{
return GRUB_ERR_BAD_DEVICE;
}
/* Try to get mode info. */
rc = grub_vbe_get_video_mode_info (mode, &active_mode_info);
if (rc != GRUB_ERR_NONE)
{
return rc;
}
/* For all VESA BIOS modes, force linear frame buffer. */
if (mode >= 0x100)
{
/* We only want linear frame buffer modes. */
mode |= 1 << 14;
/* Determine frame buffer pixel format. */
switch(active_mode_info.memory_model)
{
case 0x04:
index_color_mode = 1;
break;
case 0x06:
index_color_mode = 0;
break;
default:
return GRUB_ERR_BAD_DEVICE;
}
}
/* Try to set video mode. */
rc = grub_vbe_set_mode (mode, 0);
if (rc != 0x004F)
{
return GRUB_ERR_BAD_DEVICE;
}
/* Save information for later usage. */
active_mode = mode;
if (mode < 0x100)
{
/* If this is not a VESA mode, guess address. */
framebuffer = (grub_uint8_t *)0xA0000;
index_color_mode = 1;
}
else
{
framebuffer = (grub_uint8_t *)active_mode_info.phys_base_addr;
if (controller_info.version >= 0x300)
{
bytes_per_scan_line = active_mode_info.lin_bytes_per_scan_line;
}
else
{
bytes_per_scan_line = active_mode_info.bytes_per_scan_line;
}
}
/* If video mode is in indexed color, setup default VGA palette. */
if (index_color_mode != 0)
{
rc = grub_vbe_set_palette_data (16, 0, vga_colors);
if (rc != 0x004F)
{
return GRUB_ERR_BAD_DEVICE;
}
}
/* Copy mode info for caller. */
if (mode_info != 0)
{
grub_memcpy (mode_info,
&active_mode_info,
sizeof(struct grub_vbe_mode_info_block));
}
return GRUB_ERR_NONE;
}
grub_err_t
grub_vbe_get_video_mode (grub_uint32_t *mode)
{
grub_uint32_t rc;
/* If grub_vesafb_probe has not been called or no VBE, abort. */
if (vbe_detected == 0)
{
return GRUB_ERR_BAD_DEVICE;
}
/* Try to query current mode from VESA BIOS. */
rc = grub_vbe_get_mode (mode);
if (rc != 0x004F)
{
return GRUB_ERR_BAD_DEVICE;
}
return GRUB_ERR_NONE;
}
grub_err_t
grub_vbe_get_video_mode_info (grub_uint32_t mode,
struct grub_vbe_mode_info_block *mode_info)
{
struct grub_vbe_mode_info_block *mi_tmp = (struct grub_vbe_mode_info_block *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
grub_uint32_t rc;
/* If grub_vesafb_probe has not been called or no VBE, abort. */
if (vbe_detected == 0)
{
return GRUB_ERR_BAD_DEVICE;
}
/* If mode is not VESA mode, skip mode info query. */
if (mode >= 0x100)
{
/* Try to get mode info from VESA BIOS. */
rc = grub_vbe_get_mode_info (mode, mi_tmp);
if (rc != 0x004F)
{
return GRUB_ERR_BAD_DEVICE;
}
/* Make copy of mode info block. */
grub_memcpy (mode_info,
mi_tmp,
sizeof(struct grub_vbe_mode_info_block));
}
else
{
/* Just clear mode info block if it isn't a VESA mode. */
grub_memset (mode_info,
0,
sizeof(struct grub_vbe_mode_info_block));
}
return GRUB_ERR_NONE;
}
void
grub_vbe_set_pixel_rgb (grub_uint32_t x,
grub_uint32_t y,
grub_uint8_t red,
grub_uint8_t green,
grub_uint8_t blue)
{
grub_uint32_t value;
if (x >= active_mode_info.x_resolution)
return;
if (y >= active_mode_info.y_resolution)
return;
if (controller_info.version >= 0x300)
{
red >>= 8 - active_mode_info.lin_red_mask_size;
green >>= 8 - active_mode_info.lin_green_mask_size;
blue >>= 8 - active_mode_info.lin_blue_mask_size;
value = red << active_mode_info.lin_red_field_position;
value |= green << active_mode_info.lin_green_field_position;
value |= blue << active_mode_info.lin_blue_field_position;
}
else
{
red >>= 8 - active_mode_info.red_mask_size;
green >>= 8 - active_mode_info.green_mask_size;
blue >>= 8 - active_mode_info.blue_mask_size;
value = red << active_mode_info.red_field_position;
value |= green << active_mode_info.green_field_position;
value |= blue << active_mode_info.blue_field_position;
}
if (active_mode_info.bits_per_pixel == 32)
{
grub_uint32_t *ptr = (grub_uint32_t *)(framebuffer + y * bytes_per_scan_line + x * 4);
*ptr = value;
}
else if (active_mode_info.bits_per_pixel == 24)
{
grub_uint8_t *ptr = (grub_uint8_t *)(framebuffer + y * bytes_per_scan_line + x * 3);
grub_uint8_t *ptr2 = (grub_uint8_t *)&value;
ptr[0] = ptr2[0];
ptr[1] = ptr2[1];
ptr[2] = ptr2[2];
}
else if ((active_mode_info.bits_per_pixel == 16) ||
(active_mode_info.bits_per_pixel == 15))
{
grub_uint16_t *ptr = (grub_uint16_t *)(framebuffer + y * bytes_per_scan_line + x * 2);
*ptr = (grub_uint16_t)(value & 0xFFFF);
}
}
void
grub_vbe_set_pixel_index (grub_uint32_t x,
grub_uint32_t y,
grub_uint8_t color)
{
if (x >= active_mode_info.x_resolution)
return;
if (y >= active_mode_info.y_resolution)
return;
if (index_color_mode == 1)
{
grub_uint8_t *ptr = (grub_uint8_t *)(framebuffer + y * bytes_per_scan_line + x);
*ptr = color;
}
else
{
color &= 0x0F;
if (color < 16)
{
grub_vbe_set_pixel_rgb (x,
y,
vga_colors[color].red,
vga_colors[color].green,
vga_colors[color].blue);
}
else
{
grub_vbe_set_pixel_rgb (x,
y,
0,
0,
0);
}
}
}