NetBSD/usr.sbin/sysinst/mbr.h

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/* $NetBSD: mbr.h,v 1.1 2014/07/26 19:30:44 dholland Exp $ */
/*
* Copyright 1997, 1988 Piermont Information Systems Inc.
* All rights reserved.
*
* Written by Philip A. Nelson for Piermont Information Systems Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of Piermont Information Systems Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef _MBR_H
#define _MBR_H
/*
* mbr.h -- definitions for reading, writing and editing DOS MBRs.
* Use by including from md.h on ports which use MBRs (i386, powerpc, arc)
* naming convention: dlxxxx => NetBSD disklabel, bxxxx => bios
*/
/* constants and defines */
Overhaul MBR handling (part 1): <sys/bootblock.h>: * Added definitions for the Master Boot Record (MBR) used by a variety of systems (primarily i386), including the format of the BIOS Parameter Block (BPB). This information was cribbed from a variety of sources including <sys/disklabel_mbr.h> which this is a superset of. As part of this, some data structure elements and #defines were renamed to be more "namespace friendly" and consistent with other bootblocks and MBR documentation. Update all uses of the old names to the new names. <sys/disklabel_mbr.h>: * Deprecated in favor of <sys/bootblock.h> (the latter is more "host tool" friendly). amd64 & i386: * Renamed /usr/mdec/bootxx_dosfs to /usr/mdec/bootxx_msdos, to be consistent with the naming convention of the msdosfs tools. * Removed /usr/mdec/bootxx_ufs, as it's equivalent to bootxx_ffsv1 and it's confusing to have two functionally equivalent bootblocks, especially given that "ufs" has multiple meanings (it could be a synonym for "ffs", or the group of ffs/lfs/ext2fs file systems). * Rework pbr.S (the first sector of bootxx_*): + Ensure that BPB (bytes 11..89) and the partition table (bytes 446..509) do not contain code. + Add support for booting from FAT partitions if BOOT_FROM_FAT is defined. (Only set for bootxx_msdos). + Remove "dummy" partition 3; if people want to installboot(8) these to the start of the disk they can use fdisk(8) to create a real MBR partition table... + Compile with TERSE_ERROR so it fits because of the above. Whilst this is less user friendly, I feel it's important to have a valid partition table and BPB in the MBR/PBR. * Renamed /usr/mdec/biosboot to /usr/mdec/boot, to be consistent with other platforms. * Enable SUPPORT_DOSFS in /usr/mdec/boot (stage2), so that we can boot off FAT partitions. * Crank version of /usr/mdec/boot to 3.1, and fix some of the other entries in the version file. installboot(8) (i386): * Read the existing MBR of the filesystem and retain the BIOS Parameter Block (BPB) in bytes 11..89 and the MBR partition table in bytes 446..509. (Previously installboot(8) would trash those two sections of the MBR.) mbrlabel(8): * Use sys/lib/libkern/xlat_mbr_fstype.c instead of homegrown code to map the MBR partition type to the NetBSD disklabel type. Test built "make release" for i386, and new bootblocks verified to work (even off FAT!).
2003-10-08 08:25:43 +04:00
#include <sys/bootblock.h>
/*
* XXX I (dsl) haven't the foggiest idea what the MBR extended chain
* looks like if the sector size isn't 512.
*/
#define MBR_SECSIZE 512
#define MBR_PUT_LSCYL(c) ((c) & 0xff)
#define MBR_PUT_MSCYLANDSEC(c,s) (((s) & 0x3f) | (((c) >> 2) & 0xc0))
typedef struct mbr_info_t mbr_info_t;
struct mbr_info_t {
Overhaul MBR handling (part 1): <sys/bootblock.h>: * Added definitions for the Master Boot Record (MBR) used by a variety of systems (primarily i386), including the format of the BIOS Parameter Block (BPB). This information was cribbed from a variety of sources including <sys/disklabel_mbr.h> which this is a superset of. As part of this, some data structure elements and #defines were renamed to be more "namespace friendly" and consistent with other bootblocks and MBR documentation. Update all uses of the old names to the new names. <sys/disklabel_mbr.h>: * Deprecated in favor of <sys/bootblock.h> (the latter is more "host tool" friendly). amd64 & i386: * Renamed /usr/mdec/bootxx_dosfs to /usr/mdec/bootxx_msdos, to be consistent with the naming convention of the msdosfs tools. * Removed /usr/mdec/bootxx_ufs, as it's equivalent to bootxx_ffsv1 and it's confusing to have two functionally equivalent bootblocks, especially given that "ufs" has multiple meanings (it could be a synonym for "ffs", or the group of ffs/lfs/ext2fs file systems). * Rework pbr.S (the first sector of bootxx_*): + Ensure that BPB (bytes 11..89) and the partition table (bytes 446..509) do not contain code. + Add support for booting from FAT partitions if BOOT_FROM_FAT is defined. (Only set for bootxx_msdos). + Remove "dummy" partition 3; if people want to installboot(8) these to the start of the disk they can use fdisk(8) to create a real MBR partition table... + Compile with TERSE_ERROR so it fits because of the above. Whilst this is less user friendly, I feel it's important to have a valid partition table and BPB in the MBR/PBR. * Renamed /usr/mdec/biosboot to /usr/mdec/boot, to be consistent with other platforms. * Enable SUPPORT_DOSFS in /usr/mdec/boot (stage2), so that we can boot off FAT partitions. * Crank version of /usr/mdec/boot to 3.1, and fix some of the other entries in the version file. installboot(8) (i386): * Read the existing MBR of the filesystem and retain the BIOS Parameter Block (BPB) in bytes 11..89 and the MBR partition table in bytes 446..509. (Previously installboot(8) would trash those two sections of the MBR.) mbrlabel(8): * Use sys/lib/libkern/xlat_mbr_fstype.c instead of homegrown code to map the MBR partition type to the NetBSD disklabel type. Test built "make release" for i386, and new bootblocks verified to work (even off FAT!).
2003-10-08 08:25:43 +04:00
struct mbr_sector mbr;
#ifdef BOOTSEL
struct mbr_bootsel mbrb; /* writeable for any mbr code */
uint oflags;
#endif
uint sector; /* where we read this from */
mbr_info_t *extended; /* next in extended partition list */
mbr_info_t *prev_ext; /* and back ptr */
Overhaul MBR handling (part 1): <sys/bootblock.h>: * Added definitions for the Master Boot Record (MBR) used by a variety of systems (primarily i386), including the format of the BIOS Parameter Block (BPB). This information was cribbed from a variety of sources including <sys/disklabel_mbr.h> which this is a superset of. As part of this, some data structure elements and #defines were renamed to be more "namespace friendly" and consistent with other bootblocks and MBR documentation. Update all uses of the old names to the new names. <sys/disklabel_mbr.h>: * Deprecated in favor of <sys/bootblock.h> (the latter is more "host tool" friendly). amd64 & i386: * Renamed /usr/mdec/bootxx_dosfs to /usr/mdec/bootxx_msdos, to be consistent with the naming convention of the msdosfs tools. * Removed /usr/mdec/bootxx_ufs, as it's equivalent to bootxx_ffsv1 and it's confusing to have two functionally equivalent bootblocks, especially given that "ufs" has multiple meanings (it could be a synonym for "ffs", or the group of ffs/lfs/ext2fs file systems). * Rework pbr.S (the first sector of bootxx_*): + Ensure that BPB (bytes 11..89) and the partition table (bytes 446..509) do not contain code. + Add support for booting from FAT partitions if BOOT_FROM_FAT is defined. (Only set for bootxx_msdos). + Remove "dummy" partition 3; if people want to installboot(8) these to the start of the disk they can use fdisk(8) to create a real MBR partition table... + Compile with TERSE_ERROR so it fits because of the above. Whilst this is less user friendly, I feel it's important to have a valid partition table and BPB in the MBR/PBR. * Renamed /usr/mdec/biosboot to /usr/mdec/boot, to be consistent with other platforms. * Enable SUPPORT_DOSFS in /usr/mdec/boot (stage2), so that we can boot off FAT partitions. * Crank version of /usr/mdec/boot to 3.1, and fix some of the other entries in the version file. installboot(8) (i386): * Read the existing MBR of the filesystem and retain the BIOS Parameter Block (BPB) in bytes 11..89 and the MBR partition table in bytes 446..509. (Previously installboot(8) would trash those two sections of the MBR.) mbrlabel(8): * Use sys/lib/libkern/xlat_mbr_fstype.c instead of homegrown code to map the MBR partition type to the NetBSD disklabel type. Test built "make release" for i386, and new bootblocks verified to work (even off FAT!).
2003-10-08 08:25:43 +04:00
const char *last_mounted[MBR_PART_COUNT];
/* only in first item... */
int opt; /* entry being edited */
uint install; /* start sector of install partition */
#ifdef BOOTSEL
uint bootsec; /* start sector of bootmenu default */
#endif
};
/* incore fdisk (mbr, bios) geometry */
int bcyl, bhead, bsec;
mbr_info_t mbr;
#ifdef BOOTSEL
struct mbr_bootsel *mbs;
Overhaul MBR handling (part 1): <sys/bootblock.h>: * Added definitions for the Master Boot Record (MBR) used by a variety of systems (primarily i386), including the format of the BIOS Parameter Block (BPB). This information was cribbed from a variety of sources including <sys/disklabel_mbr.h> which this is a superset of. As part of this, some data structure elements and #defines were renamed to be more "namespace friendly" and consistent with other bootblocks and MBR documentation. Update all uses of the old names to the new names. <sys/disklabel_mbr.h>: * Deprecated in favor of <sys/bootblock.h> (the latter is more "host tool" friendly). amd64 & i386: * Renamed /usr/mdec/bootxx_dosfs to /usr/mdec/bootxx_msdos, to be consistent with the naming convention of the msdosfs tools. * Removed /usr/mdec/bootxx_ufs, as it's equivalent to bootxx_ffsv1 and it's confusing to have two functionally equivalent bootblocks, especially given that "ufs" has multiple meanings (it could be a synonym for "ffs", or the group of ffs/lfs/ext2fs file systems). * Rework pbr.S (the first sector of bootxx_*): + Ensure that BPB (bytes 11..89) and the partition table (bytes 446..509) do not contain code. + Add support for booting from FAT partitions if BOOT_FROM_FAT is defined. (Only set for bootxx_msdos). + Remove "dummy" partition 3; if people want to installboot(8) these to the start of the disk they can use fdisk(8) to create a real MBR partition table... + Compile with TERSE_ERROR so it fits because of the above. Whilst this is less user friendly, I feel it's important to have a valid partition table and BPB in the MBR/PBR. * Renamed /usr/mdec/biosboot to /usr/mdec/boot, to be consistent with other platforms. * Enable SUPPORT_DOSFS in /usr/mdec/boot (stage2), so that we can boot off FAT partitions. * Crank version of /usr/mdec/boot to 3.1, and fix some of the other entries in the version file. installboot(8) (i386): * Read the existing MBR of the filesystem and retain the BIOS Parameter Block (BPB) in bytes 11..89 and the MBR partition table in bytes 446..509. (Previously installboot(8) would trash those two sections of the MBR.) mbrlabel(8): * Use sys/lib/libkern/xlat_mbr_fstype.c instead of homegrown code to map the MBR partition type to the NetBSD disklabel type. Test built "make release" for i386, and new bootblocks verified to work (even off FAT!).
2003-10-08 08:25:43 +04:00
/* sync with src/sbin/fdisk/fdisk.c */
#define DEFAULT_BOOTDIR "/usr/mdec"
#define DEFAULT_BOOTCODE "mbr"
#define DEFAULT_BOOTSELCODE "mbr_bootsel"
#define DEFAULT_BOOTEXTCODE "mbr_ext"
/* Scan values for the various keys we use, as returned by the BIOS */
#define SCAN_ENTER 0x1c
#define SCAN_F1 0x3b
#define SCAN_1 0x2
#endif /* BOOTSEL */
/* from mbr.c */
void set_fdisk_geom(void); /* edit incore BIOS geometry */
void disp_cur_geom(void);
int check_geom(void); /* primitive geometry sanity-check */
void disp_cur_part(struct mbr_partition *, int, int);
int edit_mbr(mbr_info_t *);
Rather big update to sysinst, in order to get it working on the prep port. 1) Add an md_post_extract() function. This function is called after extracting the sets, and allows the arch to do something at that time. In the case of prep, it is much easier to install the bootcode after all the sets are extracted, so we do it in md_post_extract(). Added empty md_post_extract() functions to all other arches so they compile. 2) Add md_mbr_use_wholedisk() and md_check_mbr(). In edit_mbr() I have split off the code that uses the whole disk for NetBSD, into the mbr_use_wholedisk() function. On most ports that use mbr.c, I made md_mbr_use_wholedisk() just call that and return. On prep we create the magical prep boot partition here. The md_check_mbr() function allows the arch to add additional checks after the user had manually edited the MBR to make sure the choices he made allow NetBSD to function. Added a dummy routine to all mbr.c using arches. 3) Added code to bsdlabel.c to create a partition of type boot if PART_BOOT is defined, but BOOT_SIZE is not defined. Also added two more globals "bootsize" and "bootstart" which must be seeded in order to do so. This is done on prep in md_check_mbr(). 4) Added MBR_PTYPE_PREP to the list of MBR partitions. 5) Made the prep port actually install sanely. It now creates a prep boot partition, labels it correctly, installs all the sets, and then runs mkbootimage and dd's the bootimage into the prep partition. The result is a prep installer that creates a bootable NetBSD installation automatically. 6) Edited the prep menus and messages files to add new labels. In the case of the translated files, I just added the words in english for someone to translate later. I tried to xcompile a few arches to make sure I didn't break anything, but I could have missed something. Please let me know if I have broken your arch in any way. I'll watch the autobuilds for the next few days too. For all ports other than prep there should be no functional changes at all.
2006-04-05 20:55:01 +04:00
int mbr_use_wholedisk(mbr_info_t *);
int partsoverlap(struct mbr_partition *, int, int);
/* from mbr.c */
int read_mbr(const char *, mbr_info_t *);
int write_mbr(const char *, mbr_info_t *, int);
Overhaul MBR handling (part 1): <sys/bootblock.h>: * Added definitions for the Master Boot Record (MBR) used by a variety of systems (primarily i386), including the format of the BIOS Parameter Block (BPB). This information was cribbed from a variety of sources including <sys/disklabel_mbr.h> which this is a superset of. As part of this, some data structure elements and #defines were renamed to be more "namespace friendly" and consistent with other bootblocks and MBR documentation. Update all uses of the old names to the new names. <sys/disklabel_mbr.h>: * Deprecated in favor of <sys/bootblock.h> (the latter is more "host tool" friendly). amd64 & i386: * Renamed /usr/mdec/bootxx_dosfs to /usr/mdec/bootxx_msdos, to be consistent with the naming convention of the msdosfs tools. * Removed /usr/mdec/bootxx_ufs, as it's equivalent to bootxx_ffsv1 and it's confusing to have two functionally equivalent bootblocks, especially given that "ufs" has multiple meanings (it could be a synonym for "ffs", or the group of ffs/lfs/ext2fs file systems). * Rework pbr.S (the first sector of bootxx_*): + Ensure that BPB (bytes 11..89) and the partition table (bytes 446..509) do not contain code. + Add support for booting from FAT partitions if BOOT_FROM_FAT is defined. (Only set for bootxx_msdos). + Remove "dummy" partition 3; if people want to installboot(8) these to the start of the disk they can use fdisk(8) to create a real MBR partition table... + Compile with TERSE_ERROR so it fits because of the above. Whilst this is less user friendly, I feel it's important to have a valid partition table and BPB in the MBR/PBR. * Renamed /usr/mdec/biosboot to /usr/mdec/boot, to be consistent with other platforms. * Enable SUPPORT_DOSFS in /usr/mdec/boot (stage2), so that we can boot off FAT partitions. * Crank version of /usr/mdec/boot to 3.1, and fix some of the other entries in the version file. installboot(8) (i386): * Read the existing MBR of the filesystem and retain the BIOS Parameter Block (BPB) in bytes 11..89 and the MBR partition table in bytes 446..509. (Previously installboot(8) would trash those two sections of the MBR.) mbrlabel(8): * Use sys/lib/libkern/xlat_mbr_fstype.c instead of homegrown code to map the MBR partition type to the NetBSD disklabel type. Test built "make release" for i386, and new bootblocks verified to work (even off FAT!).
2003-10-08 08:25:43 +04:00
int valid_mbr(struct mbr_sector *);
int guess_biosgeom_from_mbr(mbr_info_t *, int *, int *, daddr_t *);
defs.h: - Re-order the md_*() definitions so they are in the order called - Add some comments - Remove obsolete md_set_no_x() definition - Remove md_copy_filesystem() - #if defined(DEBUG) declare backtowin(void) to avoid scattering externs in various md .c files mbr.[ch]: - Add a set_bios_geom_with_mbr_guess() which can be called by all the non x86 ports rather than copying the same code into arc, bebox, cobalt, evbmips, evbppc, hpcarm, hpcmips, landisk, ofppc, prep, sandpoint, and zaurus md.c install.c: - Remove now unnecessary call to md_copy_filesystem() upgrade.c: - Move move_aout_libs() here, and put under #ifdef AOUT2ELF - Rather than having *every* md_update call wrefresh(curscr), wmove(stdscr, 0, 0), wclear(stdscr), and wrefresh(stdscr), move them here arch/acorn26/md.c: - Just include arch/acorn32/md.c, but add a note there warning about this, and while here add a note to i386/md.c that it is included by amd64 arch/*/md.c: - By all means "Vive la difference", but we have 38 pairs of md.[ch], and they could not even agree on the order in which to list the md hooks, let alone formatting. Sort the md hooks to match the (now sane) order in def.sh, and try to normalise the formatting - Also copy across some function level comments everywhere - Ensure functions only used inside each md.c are defined as static - Remove some now unused functions - Some files had enable_rc_conf in #ifdef DEBUG. Add this to all - bebox, evbppc and sandpoint were still playing broken games with copying the booted ramdisk to the target disk, the primary result of which was just to slow things down and ensure the target system lost the .profile extracted from the sets. Just kill this. - For some ports md_update() called endwin(), and in others not. Take a cure from i386/amd64 and a few other more active ports, and update everything to match (no endwin()) - In a couple of cases correct port names in comments - ANSIfy some lingering old style functions - Consistently use "return 0;" rather than "return (0);" More of the mbr code should be abstracted, along with the get_ramsize() / set_swap() logic, but this is (more than) enough for one day... sysinst built for all ports but only runtime tested on amd64 & i386
2009-09-19 18:57:27 +04:00
int set_bios_geom_with_mbr_guess(void);
void set_bios_geom(int, int, int);
int otherpart(int);
int ourpart(int);
const char *get_partname(int);
void edit_ptn_bounds(void);
#ifdef BOOTSEL
void disp_bootsel(void);
void edit_bootsel_entry(int);
void edit_bootsel_timeout(void);
void edit_bootsel_default_ptn(int);
void edit_bootsel_default_disk(int);
void configure_bootsel(void);
#endif
2011-07-01 00:09:15 +04:00
/* Machine dependent mbr functions */
Rather big update to sysinst, in order to get it working on the prep port. 1) Add an md_post_extract() function. This function is called after extracting the sets, and allows the arch to do something at that time. In the case of prep, it is much easier to install the bootcode after all the sets are extracted, so we do it in md_post_extract(). Added empty md_post_extract() functions to all other arches so they compile. 2) Add md_mbr_use_wholedisk() and md_check_mbr(). In edit_mbr() I have split off the code that uses the whole disk for NetBSD, into the mbr_use_wholedisk() function. On most ports that use mbr.c, I made md_mbr_use_wholedisk() just call that and return. On prep we create the magical prep boot partition here. The md_check_mbr() function allows the arch to add additional checks after the user had manually edited the MBR to make sure the choices he made allow NetBSD to function. Added a dummy routine to all mbr.c using arches. 3) Added code to bsdlabel.c to create a partition of type boot if PART_BOOT is defined, but BOOT_SIZE is not defined. Also added two more globals "bootsize" and "bootstart" which must be seeded in order to do so. This is done on prep in md_check_mbr(). 4) Added MBR_PTYPE_PREP to the list of MBR partitions. 5) Made the prep port actually install sanely. It now creates a prep boot partition, labels it correctly, installs all the sets, and then runs mkbootimage and dd's the bootimage into the prep partition. The result is a prep installer that creates a bootable NetBSD installation automatically. 6) Edited the prep menus and messages files to add new labels. In the case of the translated files, I just added the words in english for someone to translate later. I tried to xcompile a few arches to make sure I didn't break anything, but I could have missed something. Please let me know if I have broken your arch in any way. I'll watch the autobuilds for the next few days too. For all ports other than prep there should be no functional changes at all.
2006-04-05 20:55:01 +04:00
int md_mbr_use_wholedisk(mbr_info_t *mbri);
int md_check_mbr(mbr_info_t *mbri);
#endif