grub/commands/i386/pc/vbeinfo.c
Robert Millan 58bc8bd5b1 2010-01-03 Robert Millan <rmh.grub@aybabtu.com>
* boot/i386/pc/boot.S: Update copyright year.
	* boot/i386/pc/cdboot.S: Likewise.
	* boot/i386/pc/diskboot.S: Likewise.
	* boot/i386/pc/lnxboot.S: Likewise.
	* boot/i386/pc/pxeboot.S: Likewise.
	* bus/pci.c: Likewise.
	* commands/cmp.c: Likewise.
	* commands/help.c: Likewise.
	* commands/hexdump.c: Likewise.
	* commands/i386/pc/halt.c: Likewise.
	* commands/i386/pc/play.c: Likewise.
	* commands/i386/pc/vbeinfo.c: Likewise.
	* commands/ls.c: Likewise.
	* commands/test.c: Likewise.
	* disk/dmraid_nvidia.c: Likewise.
	* disk/i386/pc/biosdisk.c: Likewise.
	* disk/ieee1275/nand.c: Likewise.
	* disk/ieee1275/ofdisk.c: Likewise.
	* disk/lvm.c: Likewise.
	* disk/raid.c: Likewise.
	* disk/raid6_recover.c: Likewise.
	* disk/scsi.c: Likewise.
	* fs/affs.c: Likewise.
	* fs/cpio.c: Likewise.
	* fs/ext2.c: Likewise.
	* fs/hfs.c: Likewise.
	* fs/iso9660.c: Likewise.
	* fs/ntfs.c: Likewise.
	* fs/sfs.c: Likewise.
	* fs/udf.c: Likewise.
	* fs/ufs.c: Likewise.
	* fs/xfs.c: Likewise.
	* gencmdlist.sh: Likewise.
	* genmk.rb: Likewise.
	* include/grub/disk.h: Likewise.
	* include/grub/efi/api.h: Likewise.
	* include/grub/efi/efi.h: Likewise.
	* include/grub/efi/pe32.h: Likewise.
	* include/grub/elf.h: Likewise.
	* include/grub/fs.h: Likewise.
	* include/grub/i386/at_keyboard.h: Likewise.
	* include/grub/i386/pc/memory.h: Likewise.
	* include/grub/i386/pc/vbe.h: Likewise.
	* include/grub/i386/pci.h: Likewise.
	* include/grub/i386/tsc.h: Likewise.
	* include/grub/ieee1275/ieee1275.h: Likewise.
	* include/grub/ntfs.h: Likewise.
	* include/grub/sparc64/ieee1275/ieee1275.h: Likewise.
	* include/grub/sparc64/libgcc.h: Likewise.
	* include/grub/symbol.h: Likewise.
	* include/grub/types.h: Likewise.
	* include/multiboot2.h: Likewise.
	* io/gzio.c: Likewise.
	* kern/device.c: Likewise.
	* kern/disk.c: Likewise.
	* kern/efi/efi.c: Likewise.
	* kern/efi/mm.c: Likewise.
	* kern/elf.c: Likewise.
	* kern/file.c: Likewise.
	* kern/i386/dl.c: Likewise.
	* kern/i386/pc/init.c: Likewise.
	* kern/i386/pc/startup.S: Likewise.
	* kern/ieee1275/ieee1275.c: Likewise.
	* kern/ieee1275/init.c: Likewise.
	* kern/main.c: Likewise.
	* kern/mm.c: Likewise.
	* kern/powerpc/dl.c: Likewise.
	* kern/sparc64/dl.c: Likewise.
	* kern/x86_64/dl.c: Likewise.
	* lib/hexdump.c: Likewise.
	* loader/efi/appleloader.c: Likewise.
	* loader/i386/ieee1275/linux.c: Likewise.
	* loader/i386/pc/chainloader.c: Likewise.
	* loader/i386/pc/linux.c: Likewise.
	* loader/i386/pc/multiboot2.c: Likewise.
	* loader/ieee1275/multiboot2.c: Likewise.
	* loader/multiboot2.c: Likewise.
	* loader/multiboot_loader.c: Likewise.
	* loader/powerpc/ieee1275/linux.c: Likewise.
	* normal/completion.c: Likewise.
	* normal/menu_entry.c: Likewise.
	* partmap/apple.c: Likewise.
	* util/grub.d/10_hurd.in: Likewise.
	* util/hostfs.c: Likewise.
	* video/readers/png.c: Likewise.
2010-01-03 22:05:07 +00:00

185 lines
5.5 KiB
C

/* vbeinfo.c - command to list compatible VBE video modes. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2007,2008,2009 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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, see <http://www.gnu.org/licenses/>.
*/
#include <grub/dl.h>
#include <grub/env.h>
#include <grub/misc.h>
#include <grub/machine/init.h>
#include <grub/machine/vbe.h>
#include <grub/mm.h>
#include <grub/command.h>
#include <grub/i18n.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_vbeinfo (grub_command_t cmd __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 *video_mode_list;
grub_uint16_t *p;
grub_uint16_t *saved_video_mode_list;
grub_size_t video_mode_list_size;
grub_err_t err;
char *modevar;
err = grub_vbe_probe (&controller_info);
if (err != GRUB_ERR_NONE)
return err;
grub_printf ("VBE info: version: %d.%d OEM software rev: %d.%d\n",
controller_info.version >> 8,
controller_info.version & 0xFF,
controller_info.oem_software_rev >> 8,
controller_info.oem_software_rev & 0xFF);
/* The total_memory field is in 64 KiB units. */
grub_printf (" total memory: %d KiB\n",
(controller_info.total_memory << 16) / 1024);
/* Because the information on video modes is stored in a temporary place,
it is better to copy it to somewhere safe. */
p = video_mode_list = real2pm (controller_info.video_mode_ptr);
while (*p++ != 0xFFFF)
;
video_mode_list_size = (grub_addr_t) p - (grub_addr_t) video_mode_list;
saved_video_mode_list = grub_malloc (video_mode_list_size);
if (! saved_video_mode_list)
return grub_errno;
grub_memcpy (saved_video_mode_list, video_mode_list, video_mode_list_size);
grub_printf ("List of compatible video modes:\n");
grub_printf ("Legend: P=Packed pixel, D=Direct color, "
"mask/pos=R/G/B/reserved\n");
/* Walk through all video modes listed. */
for (p = saved_video_mode_list; *p != 0xFFFF; p++)
{
const char *memory_model = 0;
grub_uint32_t mode = (grub_uint32_t) *p;
err = grub_vbe_get_video_mode_info (mode, &mode_info_tmp);
if (err != GRUB_ERR_NONE)
{
grub_errno = GRUB_ERR_NONE;
continue;
}
if ((mode_info_tmp.mode_attributes & GRUB_VBE_MODEATTR_SUPPORTED) == 0)
/* If not available, skip it. */
continue;
if ((mode_info_tmp.mode_attributes & GRUB_VBE_MODEATTR_RESERVED_1) == 0)
/* Not enough information. */
continue;
if ((mode_info_tmp.mode_attributes & GRUB_VBE_MODEATTR_COLOR) == 0)
/* Monochrome is unusable. */
continue;
if ((mode_info_tmp.mode_attributes & GRUB_VBE_MODEATTR_LFB_AVAIL) == 0)
/* We support only linear frame buffer modes. */
continue;
if ((mode_info_tmp.mode_attributes & GRUB_VBE_MODEATTR_GRAPHICS) == 0)
/* We allow only graphical modes. */
continue;
switch (mode_info_tmp.memory_model)
{
case GRUB_VBE_MEMORY_MODEL_PACKED_PIXEL:
memory_model = "Packed";
break;
case GRUB_VBE_MEMORY_MODEL_DIRECT_COLOR:
memory_model = "Direct";
break;
default:
break;
}
if (! memory_model)
continue;
grub_printf ("0x%03x: %4d x %4d x %2d %s",
mode,
mode_info_tmp.x_resolution,
mode_info_tmp.y_resolution,
mode_info_tmp.bits_per_pixel,
memory_model);
/* Show mask and position details for direct color modes. */
if (mode_info_tmp.memory_model == GRUB_VBE_MEMORY_MODEL_DIRECT_COLOR)
grub_printf (", mask: %d/%d/%d/%d pos: %d/%d/%d/%d",
mode_info_tmp.red_mask_size,
mode_info_tmp.green_mask_size,
mode_info_tmp.blue_mask_size,
mode_info_tmp.rsvd_mask_size,
mode_info_tmp.red_field_position,
mode_info_tmp.green_field_position,
mode_info_tmp.blue_field_position,
mode_info_tmp.rsvd_field_position);
grub_printf ("\n");
}
grub_free (saved_video_mode_list);
/* Check existence of vbe_mode environment variable. */
modevar = grub_env_get ("vbe_mode");
if (modevar != 0)
{
unsigned long value;
value = grub_strtoul (modevar, 0, 0);
if (grub_errno == GRUB_ERR_NONE)
use_mode = value;
else
grub_errno = GRUB_ERR_NONE;
}
grub_printf ("Configured VBE mode (vbe_mode) = 0x%03x\n", use_mode);
return 0;
}
static grub_command_t cmd;
GRUB_MOD_INIT(vbeinfo)
{
cmd =
grub_register_command ("vbeinfo", grub_cmd_vbeinfo, 0,
N_("List compatible VESA BIOS extension video modes."));
}
GRUB_MOD_FINI(vbeinfo)
{
grub_unregister_command (cmd);
}