5a79f472c7
Migrate to GNU General Public License Version 3. * COPYING: Replaced with the plain text version of GPLv3. * config.guess: Updated from gnulib. * config.sub: Likewise. * geninit.sh: Output a GPLv3 copyright notice. * geninitheader.sh: Likewise. * genmodsrc.sh: Likewise. * gensymlist.sh.in: Likewise. * boot/i386/pc/boot.S: Upgraded to GPLv3. * boot/i386/pc/diskboot.S: Likewise. * boot/i386/pc/pxeboot.S: Likewise. * commands/blocklist.c: Likewise. * commands/boot.c: Likewise. * commands/cat.c: Likewise. * commands/cmp.c: Likewise. * commands/configfile.c: Likewise. * commands/echo.c: Likewise. * commands/help.c: Likewise. * commands/ls.c: Likewise. * commands/search.c: Likewise. * commands/terminal.c: Likewise. * commands/test.c: Likewise. * commands/videotest.c: Likewise. * commands/i386/cpuid.c: Likewise. * commands/i386/pc/halt.c: Likewise. * commands/i386/pc/play.c: Likewise. * commands/i386/pc/reboot.c: Likewise. * commands/i386/pc/vbeinfo.c: Likewise. * commands/i386/pc/vbetest.c: Likewise. * commands/ieee1275/halt.c: Likewise. * commands/ieee1275/reboot.c: Likewise. * commands/ieee1275/suspend.c: Likewise. * disk/loopback.c: Likewise. * disk/lvm.c: Likewise. * disk/raid.c: Likewise. * disk/efi/efidisk.c: Likewise. * disk/i386/pc/biosdisk.c: Likewise. * disk/ieee1275/ofdisk.c: Likewise. * font/manager.c: Likewise. * fs/affs.c: Likewise. * fs/ext2.c: Likewise. * fs/fat.c: Likewise. * fs/fshelp.c: Likewise. * fs/hfs.c: Likewise. * fs/hfsplus.c: Likewise. * fs/iso9660.c: Likewise. * fs/jfs.c: Likewise. * fs/minix.c: Likewise. * fs/sfs.c: Likewise. * fs/ufs.c: Likewise. * fs/xfs.c: Likewise. * hello/hello.c: Likewise. * include/grub/acorn_filecore.h: Likewise. * include/grub/arg.h: Likewise. * include/grub/bitmap.h: Likewise. * include/grub/boot.h: Likewise. * include/grub/cache.h: Likewise. * include/grub/device.h: Likewise. * include/grub/disk.h: Likewise. * include/grub/dl.h: Likewise. * include/grub/elfload.h: Likewise. * include/grub/env.h: Likewise. * include/grub/err.h: Likewise. * include/grub/file.h: Likewise. * include/grub/font.h: Likewise. * include/grub/fs.h: Likewise. * include/grub/fshelp.h: Likewise. * include/grub/gzio.h: Likewise. * include/grub/hfs.h: Likewise. * include/grub/kernel.h: Likewise. * include/grub/loader.h: Likewise. * include/grub/lvm.h: Likewise. * include/grub/misc.h: Likewise. * include/grub/mm.h: Likewise. * include/grub/net.h: Likewise. * include/grub/normal.h: Likewise. * include/grub/parser.h: Likewise. * include/grub/partition.h: Likewise. * include/grub/pc_partition.h: Likewise. * include/grub/raid.h: Likewise. * include/grub/rescue.h: Likewise. * include/grub/script.h: Likewise. * include/grub/setjmp.h: Likewise. * include/grub/symbol.h: Likewise. * include/grub/term.h: Likewise. * include/grub/terminfo.h: Likewise. * include/grub/tparm.h: Likewise. * include/grub/types.h: Likewise. * include/grub/video.h: Likewise. * include/grub/efi/api.h: Likewise. * include/grub/efi/chainloader.h: Likewise. * include/grub/efi/console.h: Likewise. * include/grub/efi/console_control.h: Likewise. * include/grub/efi/disk.h: Likewise. * include/grub/efi/efi.h: Likewise. * include/grub/efi/pe32.h: Likewise. * include/grub/efi/time.h: Likewise. * include/grub/i386/linux.h: Likewise. * include/grub/i386/setjmp.h: Likewise. * include/grub/i386/types.h: Likewise. * include/grub/i386/efi/kernel.h: Likewise. * include/grub/i386/efi/loader.h: Likewise. * include/grub/i386/efi/time.h: Likewise. * include/grub/i386/pc/biosdisk.h: Likewise. * include/grub/i386/pc/boot.h: Likewise. * include/grub/i386/pc/chainloader.h: Likewise. * include/grub/i386/pc/console.h: Likewise. * include/grub/i386/pc/init.h: Likewise. * include/grub/i386/pc/kernel.h: Likewise. * include/grub/i386/pc/loader.h: Likewise. * include/grub/i386/pc/memory.h: Likewise. * include/grub/i386/pc/multiboot.h: Likewise. * include/grub/i386/pc/serial.h: Likewise. * include/grub/i386/pc/time.h: Likewise. * include/grub/i386/pc/vbe.h: Likewise. * include/grub/i386/pc/vbeblit.h: Likewise. * include/grub/i386/pc/vbefill.h: Likewise. * include/grub/i386/pc/vbeutil.h: Likewise. * include/grub/i386/pc/vga.h: Likewise. * include/grub/ieee1275/ieee1275.h: Likewise. * include/grub/ieee1275/ofdisk.h: Likewise. * include/grub/powerpc/libgcc.h: Likewise. * include/grub/powerpc/setjmp.h: Likewise. * include/grub/powerpc/types.h: Likewise. * include/grub/powerpc/ieee1275/biosdisk.h: Likewise. * include/grub/powerpc/ieee1275/console.h: Likewise. * include/grub/powerpc/ieee1275/ieee1275.h: Likewise. * include/grub/powerpc/ieee1275/kernel.h: Likewise. * include/grub/powerpc/ieee1275/loader.h: Likewise. * include/grub/powerpc/ieee1275/multiboot.h: Likewise. * include/grub/powerpc/ieee1275/time.h: Likewise. * include/grub/powerpc/ieee1275/util/biosdisk.h: Likewise. * include/grub/sparc64/libgcc.h: Likewise. * include/grub/sparc64/setjmp.h: Likewise. * include/grub/sparc64/types.h: Likewise. * include/grub/sparc64/ieee1275/console.h: Likewise. * include/grub/sparc64/ieee1275/ieee1275.h: Likewise. * include/grub/sparc64/ieee1275/kernel.h: Likewise. * include/grub/sparc64/ieee1275/time.h: Likewise. * include/grub/util/biosdisk.h: Likewise. * include/grub/util/getroot.h: Likewise. * include/grub/util/lvm.h: Likewise. * include/grub/util/misc.h: Likewise. * include/grub/util/raid.h: Likewise. * include/grub/util/resolve.h: Likewise. * io/gzio.c: Likewise. * kern/device.c: Likewise. * kern/disk.c: Likewise. * kern/dl.c: Likewise. * kern/elf.c: Likewise. * kern/env.c: Likewise. * kern/err.c: Likewise. * kern/file.c: Likewise. * kern/fs.c: Likewise. * kern/loader.c: Likewise. * kern/main.c: Likewise. * kern/misc.c: Likewise. * kern/mm.c: Likewise. * kern/parser.c: Likewise. * kern/partition.c: Likewise. * kern/rescue.c: Likewise. * kern/term.c: Likewise. * kern/efi/efi.c: Likewise. * kern/efi/init.c: Likewise. * kern/efi/mm.c: Likewise. * kern/i386/dl.c: Likewise. * kern/i386/efi/init.c: Likewise. * kern/i386/efi/startup.S: Likewise. * kern/i386/pc/init.c: Likewise. * kern/i386/pc/lzo1x.S: Likewise. * kern/i386/pc/startup.S: Likewise. * kern/ieee1275/ieee1275.c: Likewise. * kern/powerpc/cache.S: Likewise. * kern/powerpc/dl.c: Likewise. * kern/powerpc/ieee1275/cmain.c: Likewise. * kern/powerpc/ieee1275/crt0.S: Likewise. * kern/powerpc/ieee1275/init.c: Likewise. * kern/powerpc/ieee1275/openfw.c: Likewise. * kern/sparc64/cache.S: Likewise. * kern/sparc64/dl.c: Likewise. * kern/sparc64/ieee1275/init.c: Likewise. * kern/sparc64/ieee1275/openfw.c: Likewise. * loader/efi/chainloader.c: Likewise. * loader/efi/chainloader_normal.c: Likewise. * loader/i386/efi/linux.c: Likewise. * loader/i386/efi/linux_normal.c: Likewise. * loader/i386/pc/chainloader.c: Likewise. * loader/i386/pc/chainloader_normal.c: Likewise. * loader/i386/pc/linux.c: Likewise. * loader/i386/pc/linux_normal.c: Likewise. * loader/i386/pc/multiboot.c: Likewise. * loader/i386/pc/multiboot_normal.c: Likewise. * loader/powerpc/ieee1275/linux.c: Likewise. * loader/powerpc/ieee1275/linux_normal.c: Likewise. * normal/arg.c: Likewise. * normal/cmdline.c: Likewise. * normal/command.c: Likewise. * normal/completion.c: Likewise. * normal/execute.c: Likewise. * normal/function.c: Likewise. * normal/lexer.c: Likewise. * normal/main.c: Likewise. * normal/menu.c: Likewise. * normal/menu_entry.c: Likewise. * normal/misc.c: Likewise. * normal/parser.y: Likewise. * normal/script.c: Likewise. * normal/i386/setjmp.S: Likewise. * normal/powerpc/setjmp.S: Likewise. * normal/sparc64/setjmp.S: Likewise. * partmap/acorn.c: Likewise. * partmap/amiga.c: Likewise. * partmap/apple.c: Likewise. * partmap/gpt.c: Likewise. * partmap/pc.c: Likewise. * partmap/sun.c: Likewise. * term/gfxterm.c: Likewise. * term/terminfo.c: Likewise. * term/efi/console.c: Likewise. * term/i386/pc/console.c: Likewise. * term/i386/pc/serial.c: Likewise. * term/i386/pc/vesafb.c: Likewise. * term/i386/pc/vga.c: Likewise. * term/ieee1275/ofconsole.c: Likewise. * util/biosdisk.c: Likewise. * util/console.c: Likewise. * util/genmoddep.c: Likewise. * util/getroot.c: Likewise. * util/grub-emu.c: Likewise. * util/grub-mkdevicemap.c: Likewise. * util/grub-probe.c: Likewise. * util/lvm.c: Likewise. * util/misc.c: Likewise. * util/raid.c: Likewise. * util/resolve.c: Likewise. * util/update-grub.in: Likewise. * util/update-grub_lib.in: Likewise. * util/grub.d/00_header.in: Likewise. * util/grub.d/10_hurd.in: Likewise. * util/grub.d/10_linux.in: Likewise. * util/i386/efi/grub-install.in: Likewise. * util/i386/efi/grub-mkimage.c: Likewise. * util/i386/pc/grub-install.in: Likewise. * util/i386/pc/grub-mkimage.c: Likewise. * util/i386/pc/grub-mkrescue.in: Likewise. * util/i386/pc/grub-setup.c: Likewise. * util/i386/pc/misc.c: Likewise. * util/powerpc/ieee1275/grub-install.in: Likewise. * util/powerpc/ieee1275/grub-mkimage.c: Likewise. * util/powerpc/ieee1275/misc.c: Likewise. * video/bitmap.c: Likewise. * video/video.c: Likewise. * video/i386/pc/vbe.c: Likewise. * video/i386/pc/vbeblit.c: Likewise. * video/i386/pc/vbefill.c: Likewise. * video/i386/pc/vbeutil.c: Likewise. * video/readers/tga.c: Likewise.
324 lines
8 KiB
C
324 lines
8 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007 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 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB 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, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/machine/biosdisk.h>
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#include <grub/machine/memory.h>
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#include <grub/disk.h>
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#include <grub/mm.h>
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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/err.h>
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#include <grub/term.h>
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static int
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grub_biosdisk_get_drive (const char *name)
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{
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unsigned long drive;
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if ((name[0] != 'f' && name[0] != 'h') || name[1] != 'd')
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goto fail;
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drive = grub_strtoul (name + 2, 0, 10);
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if (grub_errno != GRUB_ERR_NONE)
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goto fail;
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if (name[0] == 'h')
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drive += 0x80;
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return (int) drive ;
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fail:
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grub_error (GRUB_ERR_UNKNOWN_DEVICE, "not a biosdisk");
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return -1;
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}
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static int
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grub_biosdisk_call_hook (int (*hook) (const char *name), int drive)
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{
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char name[10];
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grub_sprintf (name, (drive & 0x80) ? "hd%d" : "fd%d", drive & (~0x80));
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return hook (name);
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}
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static int
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grub_biosdisk_iterate (int (*hook) (const char *name))
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{
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int drive;
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int num_floppies;
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/* For floppy disks, we can get the number safely. */
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num_floppies = grub_biosdisk_get_num_floppies ();
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for (drive = 0; drive < num_floppies; drive++)
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if (grub_biosdisk_call_hook (hook, drive))
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return 1;
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/* For hard disks, attempt to read the MBR. */
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for (drive = 0x80; drive < 0x90; drive++)
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{
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if (grub_biosdisk_rw_standard (0x02, drive, 0, 0, 1, 1,
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GRUB_MEMORY_MACHINE_SCRATCH_SEG) != 0)
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break;
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if (grub_biosdisk_call_hook (hook, drive))
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return 1;
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}
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return 0;
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}
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static grub_err_t
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grub_biosdisk_open (const char *name, grub_disk_t disk)
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{
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grub_uint64_t total_sectors = 0;
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int drive;
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struct grub_biosdisk_data *data;
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drive = grub_biosdisk_get_drive (name);
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if (drive < 0)
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return grub_errno;
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disk->has_partitions = (drive & 0x80);
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disk->id = drive;
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data = (struct grub_biosdisk_data *) grub_malloc (sizeof (*data));
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if (! data)
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return grub_errno;
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data->drive = drive;
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data->flags = 0;
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if (drive & 0x80)
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{
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/* HDD */
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int version;
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version = grub_biosdisk_check_int13_extensions (drive);
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if (version)
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{
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struct grub_biosdisk_drp *drp
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= (struct grub_biosdisk_drp *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
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/* Clear out the DRP. */
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grub_memset (drp, 0, sizeof (*drp));
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drp->size = sizeof (*drp);
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if (! grub_biosdisk_get_diskinfo_int13_extensions (drive, drp))
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{
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data->flags = GRUB_BIOSDISK_FLAG_LBA;
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if (drp->total_sectors)
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total_sectors = drp->total_sectors;
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else
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/* Some buggy BIOSes doesn't return the total sectors
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correctly but returns zero. So if it is zero, compute
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it by C/H/S returned by the LBA BIOS call. */
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total_sectors = drp->cylinders * drp->heads * drp->sectors;
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}
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}
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}
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if (grub_biosdisk_get_diskinfo_standard (drive,
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&data->cylinders,
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&data->heads,
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&data->sectors) != 0)
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{
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grub_free (data);
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return grub_error (GRUB_ERR_BAD_DEVICE, "cannot get C/H/S values");
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}
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if (! total_sectors)
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total_sectors = data->cylinders * data->heads * data->sectors;
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disk->total_sectors = total_sectors;
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disk->data = data;
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return GRUB_ERR_NONE;
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}
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static void
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grub_biosdisk_close (grub_disk_t disk)
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{
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grub_free (disk->data);
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}
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/* For readability. */
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#define GRUB_BIOSDISK_READ 0
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#define GRUB_BIOSDISK_WRITE 1
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static grub_err_t
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grub_biosdisk_rw (int cmd, grub_disk_t disk,
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grub_disk_addr_t sector, grub_size_t size,
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unsigned segment)
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{
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struct grub_biosdisk_data *data = disk->data;
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if (data->flags & GRUB_BIOSDISK_FLAG_LBA)
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{
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struct grub_biosdisk_dap *dap;
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dap = (struct grub_biosdisk_dap *) (GRUB_MEMORY_MACHINE_SCRATCH_ADDR
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+ (data->sectors
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<< GRUB_DISK_SECTOR_BITS));
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dap->length = sizeof (*dap);
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dap->reserved = 0;
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dap->blocks = size;
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dap->buffer = segment << 16; /* The format SEGMENT:ADDRESS. */
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dap->block = sector;
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if (grub_biosdisk_rw_int13_extensions (cmd + 0x42, data->drive, dap))
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{
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/* Fall back to the CHS mode. */
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data->flags &= ~GRUB_BIOSDISK_FLAG_LBA;
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disk->total_sectors = data->cylinders * data->heads * data->sectors;
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return grub_biosdisk_rw (cmd, disk, sector, size, segment);
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}
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}
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else
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{
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unsigned coff, hoff, soff;
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unsigned head;
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unsigned real_sector = (unsigned) sector;
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/* It is impossible to reach over 2TB with the traditional
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CHS access. */
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if (sector > ~0UL)
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return grub_error (GRUB_ERR_OUT_OF_RANGE, "out of disk");
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soff = real_sector % data->sectors + 1;
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head = real_sector / data->sectors;
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hoff = head % data->heads;
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coff = head / data->heads;
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if (coff >= data->cylinders)
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return grub_error (GRUB_ERR_OUT_OF_RANGE, "out of disk");
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if (grub_biosdisk_rw_standard (cmd + 0x02, data->drive,
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coff, hoff, soff, size, segment))
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{
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switch (cmd)
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{
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case GRUB_BIOSDISK_READ:
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return grub_error (GRUB_ERR_READ_ERROR, "biosdisk read error");
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case GRUB_BIOSDISK_WRITE:
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return grub_error (GRUB_ERR_WRITE_ERROR, "biosdisk write error");
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}
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}
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}
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return GRUB_ERR_NONE;
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}
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/* Return the number of sectors which can be read safely at a time. */
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static grub_size_t
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get_safe_sectors (grub_disk_addr_t sector, grub_uint32_t sectors)
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{
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grub_size_t size;
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grub_uint32_t offset;
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/* OFFSET = SECTOR % SECTORS */
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grub_divmod64 (sector, sectors, &offset);
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size = sectors - offset;
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/* Limit the max to 0x7f because of Phoenix EDD. */
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if (size > 0x7f)
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size = 0x7f;
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return size;
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}
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static grub_err_t
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grub_biosdisk_read (grub_disk_t disk, grub_disk_addr_t sector,
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grub_size_t size, char *buf)
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{
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struct grub_biosdisk_data *data = disk->data;
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while (size)
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{
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grub_size_t len;
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len = get_safe_sectors (sector, data->sectors);
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if (len > size)
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len = size;
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if (grub_biosdisk_rw (GRUB_BIOSDISK_READ, disk, sector, len,
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GRUB_MEMORY_MACHINE_SCRATCH_SEG))
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return grub_errno;
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grub_memcpy (buf, (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR,
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len << GRUB_DISK_SECTOR_BITS);
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buf += len << GRUB_DISK_SECTOR_BITS;
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sector += len;
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size -= len;
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}
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return grub_errno;
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}
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static grub_err_t
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grub_biosdisk_write (grub_disk_t disk, grub_disk_addr_t sector,
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grub_size_t size, const char *buf)
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{
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struct grub_biosdisk_data *data = disk->data;
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while (size)
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{
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grub_size_t len;
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len = get_safe_sectors (sector, data->sectors);
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if (len > size)
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len = size;
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grub_memcpy ((void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR, buf,
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len << GRUB_DISK_SECTOR_BITS);
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if (grub_biosdisk_rw (GRUB_BIOSDISK_WRITE, disk, sector, len,
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GRUB_MEMORY_MACHINE_SCRATCH_SEG))
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return grub_errno;
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buf += len << GRUB_DISK_SECTOR_BITS;
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sector += len;
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size -= len;
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}
|
|
|
|
return grub_errno;
|
|
}
|
|
|
|
static struct grub_disk_dev grub_biosdisk_dev =
|
|
{
|
|
.name = "biosdisk",
|
|
.id = GRUB_DISK_DEVICE_BIOSDISK_ID,
|
|
.iterate = grub_biosdisk_iterate,
|
|
.open = grub_biosdisk_open,
|
|
.close = grub_biosdisk_close,
|
|
.read = grub_biosdisk_read,
|
|
.write = grub_biosdisk_write,
|
|
.next = 0
|
|
};
|
|
|
|
void
|
|
grub_biosdisk_init (void)
|
|
{
|
|
grub_disk_dev_register (&grub_biosdisk_dev);
|
|
}
|
|
|
|
void
|
|
grub_biosdisk_fini (void)
|
|
{
|
|
grub_disk_dev_unregister (&grub_biosdisk_dev);
|
|
}
|