diff options
Diffstat (limited to 'package/aboot/src/srmbootfat')
| -rw-r--r-- | package/aboot/src/srmbootfat/COPYING | 349 | ||||
| -rw-r--r-- | package/aboot/src/srmbootfat/Makefile | 24 | ||||
| -rw-r--r-- | package/aboot/src/srmbootfat/README | 5 | ||||
| -rw-r--r-- | package/aboot/src/srmbootfat/msdos.h | 160 | ||||
| -rw-r--r-- | package/aboot/src/srmbootfat/srmbootfat.c | 246 | ||||
| -rw-r--r-- | package/aboot/src/srmbootfat/srmbootfat.sgml | 85 | ||||
| -rw-r--r-- | package/aboot/src/srmbootfat/srmbootraw.c | 101 | ||||
| -rw-r--r-- | package/aboot/src/srmbootfat/srmbootraw.sgml | 84 |
8 files changed, 1054 insertions, 0 deletions
diff --git a/package/aboot/src/srmbootfat/COPYING b/package/aboot/src/srmbootfat/COPYING new file mode 100644 index 000000000..a58e4228d --- /dev/null +++ b/package/aboot/src/srmbootfat/COPYING @@ -0,0 +1,349 @@ +This software uses part of mtools-3.9. +Mtools are Copyright (C) 1995 Alain Knaff. +The rest is Copyright (C) 1998 Nikita Schmidt. + + You may use, distribute and copy this program according to the terms of the +GNU General Public License version 2 or later. + + Alain Knaff +---------------------------------------- + + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 675 Mass Ave, Cambridge, MA 02139, USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. 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It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) 19yy <name of author> + + 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. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) 19yy name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + <signature of Ty Coon>, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/package/aboot/src/srmbootfat/Makefile b/package/aboot/src/srmbootfat/Makefile new file mode 100644 index 000000000..27808ea2e --- /dev/null +++ b/package/aboot/src/srmbootfat/Makefile @@ -0,0 +1,24 @@ +ifndef ($(CC)) +CC = gcc +endif +override CFLAGS += -O2 -g -pipe -Wall +#override LDFLAGS += -s +SBINDIR = ../bin + +all: srmbootfat srmbootraw srmbootfat.1 srmbootraw.8 + +srmbootfat: srmbootfat.c msdos.h + $(CC) $(CFLAGS) $(LDFLAGS) -o srmbootfat srmbootfat.c + +srmbootraw: srmbootraw.c + $(CC) $(CFLAGS) $(LDFLAGS) -o srmbootraw srmbootraw.c + +srmbootfat.1: srmbootfat.sgml + nsgmls srmbootfat.sgml | sgmlspl sgmlspl-specs/docbook2man-spec.pl + +srmbootraw.8: srmbootraw.sgml + nsgmls srmbootraw.sgml | sgmlspl sgmlspl-specs/docbook2man-spec.pl + +clean: + rm -f srmbootfat srmbootraw srmbootfat.1 srmbootraw.8 manpage.links manpage.log manpage.refs + diff --git a/package/aboot/src/srmbootfat/README b/package/aboot/src/srmbootfat/README new file mode 100644 index 000000000..80ff41887 --- /dev/null +++ b/package/aboot/src/srmbootfat/README @@ -0,0 +1,5 @@ +The contents of this diretory are taken from the milo source +which can be found at http://milo.coresystems.de/source/milo-2.2-18.tar.bz2 + +Additional patches to srmbootfat have been applied; also the man pages are +improved in respect to the upstream version. diff --git a/package/aboot/src/srmbootfat/msdos.h b/package/aboot/src/srmbootfat/msdos.h new file mode 100644 index 000000000..60b3ca29a --- /dev/null +++ b/package/aboot/src/srmbootfat/msdos.h @@ -0,0 +1,160 @@ +#ifndef MTOOLS_MSDOS_H +#define MTOOLS_MSDOS_H + +/* + * msdos common header file + */ + +#define MAX_SECTOR 8192 /* largest sector size */ +#define MDIR_SIZE 32 /* MSDOS directory entry size in bytes*/ +#define MAX_CLUSTER 8192 /* largest cluster size */ +#define MAX_PATH 128 /* largest MSDOS path length */ +#define MAX_DIR_SECS 64 /* largest directory (in sectors) */ + +#define NEW 1 +#define OLD 0 + +#define _WORD(x) ((unsigned char)(x)[0] + (((unsigned char)(x)[1]) << 8)) +#define _DWORD(x) (_WORD(x) + (_WORD((x)+2) << 16)) + +#define DELMARK ((char) 0xe5) + +struct directory { + char name[8]; /* 0 file name */ + char ext[3]; /* 8 file extension */ + unsigned char attr; /* 11 attribute byte */ + unsigned char Case; /* 12 case of short filename */ + unsigned char ctime_ms; /* 13 creation time, milliseconds (?) */ + unsigned char ctime[2]; /* 14 creation time */ + unsigned char cdate[2]; /* 16 creation date */ + unsigned char adate[2]; /* 18 last access date */ + unsigned char startHi[2]; /* 20 start cluster, Hi */ + unsigned char time[2]; /* 22 time stamp */ + unsigned char date[2]; /* 24 date stamp */ + unsigned char start[2]; /* 26 starting cluster number */ + unsigned char size[4]; /* 28 size of the file */ +}; + +#define EXTCASE 0x10 +#define BASECASE 0x8 + +#define MAX32 0xffffffff +#define MAX_SIZE 0x7fffffff + + + +typedef struct InfoSector_t { + unsigned char signature0[4]; + unsigned char filler[0x1e0]; + unsigned char signature[4]; + unsigned char count[4]; + unsigned char pos[4]; +} InfoSector_t; + +#define INFOSECT_SIGNATURE0 0x41615252 +#define INFOSECT_SIGNATURE 0x61417272 + + +/* FAT32 specific info in the bootsector */ +typedef struct fat32_t { + unsigned char bigFat[4]; /* 36 nb of sectors per FAT */ + unsigned char extFlags[2]; /* 40 extension flags */ + unsigned char fsVersion[2]; /* 42 ? */ + unsigned char rootCluster[4]; /* 44 start cluster of root dir */ + unsigned char infoSector[2]; /* 48 changeable global info */ + unsigned char backupBoot[2]; /* 50 back up boot sector */ + unsigned char reserved[6]; /* 52 ? */ +} fat32; /* ends at 58 */ + +typedef struct oldboot_t { + unsigned char physdrive; /* 36 physical drive ? */ + unsigned char reserved; /* 37 reserved */ + unsigned char dos4; /* 38 dos > 4.0 diskette */ + unsigned char serial[4]; /* 39 serial number */ + char label[11]; /* 43 disk label */ + char fat_type[8]; /* 54 FAT type */ + + unsigned char res_2m; /* 62 reserved by 2M */ + unsigned char CheckSum; /* 63 2M checksum (not used) */ + unsigned char fmt_2mf; /* 64 2MF format version */ + unsigned char wt; /* 65 1 if write track after format */ + unsigned char rate_0; /* 66 data transfer rate on track 0 */ + unsigned char rate_any; /* 67 data transfer rate on track<>0 */ + unsigned char BootP[2]; /* 68 offset to boot program */ + unsigned char Infp0[2]; /* 70 T1: information for track 0 */ + unsigned char InfpX[2]; /* 72 T2: information for track<>0 */ + unsigned char InfTm[2]; /* 74 T3: track sectors size table */ + unsigned char DateF[2]; /* 76 Format date */ + unsigned char TimeF[2]; /* 78 Format time */ + unsigned char junk[1024 - 80]; /* 80 remaining data */ +} oldboot_t; + +struct bootsector { + unsigned char jump[3]; /* 0 Jump to boot code */ + char banner[8]; /* 3 OEM name & version */ + unsigned char secsiz[2]; /* 11 Bytes per sector hopefully 512 */ + unsigned char clsiz; /* 13 Cluster size in sectors */ + unsigned char nrsvsect[2]; /* 14 Number of reserved (boot) sectors */ + unsigned char nfat; /* 16 Number of FAT tables hopefully 2 */ + unsigned char dirents[2]; /* 17 Number of directory slots */ + unsigned char psect[2]; /* 19 Total sectors on disk */ + unsigned char descr; /* 21 Media descriptor=first byte of FAT */ + unsigned char fatlen[2]; /* 22 Sectors in FAT */ + unsigned char nsect[2]; /* 24 Sectors/track */ + unsigned char nheads[2]; /* 26 Heads */ + unsigned char nhs[4]; /* 28 number of hidden sectors */ + unsigned char bigsect[4]; /* 32 big total sectors */ + + union { + struct fat32_t fat32; + struct oldboot_t old; + } ext; +}; + +extern struct OldDos_t { + unsigned int tracks; + unsigned int sectors; + unsigned int heads; + + unsigned int dir_len; + unsigned int cluster_size; + unsigned int fat_len; + + unsigned int media; +} old_dos[]; + +#define FAT12 4085 /* max. number of clusters described by a 12 bit FAT */ +#define FAT16 65525 + +#define MAX_SECT_PER_CLUSTER 64 +/* Experimentally, it turns out that DOS only accepts cluster sizes + * which are powers of two, and less than 128 sectors (else it gets a + * divide overflow) */ + + +#define FAT_SIZE(bits, sec_siz, clusters) \ + ((((clusters)+2) * ((bits)/4) - 1) / 2 / (sec_siz) + 1) + +#define NEEDED_FAT_SIZE(x) FAT_SIZE((x)->fat_bits, (x)->sector_size, \ + (x)->num_clus) + +/* disk size taken by FAT and clusters */ +#define DISK_SIZE(bits, sec_siz, clusters, n, cluster_size) \ + ((n) * FAT_SIZE(bits, sec_siz, clusters) + \ + (clusters) * (cluster_size)) + +#define TOTAL_DISK_SIZE(bits, sec_siz, clusters, n, cluster_size) \ + (DISK_SIZE(bits, sec_siz, clusters, n, cluster_size) + 2) +/* approx. total disk size: assume 1 boot sector and one directory sector */ + +extern const char *mversion; +extern const char *mdate; + + + +int init(char drive, int mode); + +#define MT_READ 1 +#define MT_WRITE 2 + +#endif diff --git a/package/aboot/src/srmbootfat/srmbootfat.c b/package/aboot/src/srmbootfat/srmbootfat.c new file mode 100644 index 000000000..71380ded5 --- /dev/null +++ b/package/aboot/src/srmbootfat/srmbootfat.c @@ -0,0 +1,246 @@ +/* + * SRMbootFAT - SRM boot block composer for FAT filesystems. + * Copyright (C) 1998 Nikita Schmidt <cetus@snowball.ucd.ie> + * msdos.h is Copyright (C) 1995 Alain Knaff. + * + * 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. + */ + +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> +#include <fcntl.h> +#include <ctype.h> +#include <sys/types.h> + +#include "msdos.h" + +/* This should test for little-endianness, but why bother, + the whole thing is Alpha-specific anyway. */ +#ifdef __alpha__ /* Little endian */ +#define WORD(x) (*(u_int16_t *)(x)) +#define DWORD(x) (*(u_int32_t *)(x)) +#else /* Big endian; in fact, generic stuff */ +#define WORD _WORD +#define DWORD _DWORD +#endif + +union full_bootsector { + struct bootsector dos; + struct { + unsigned char textlabel[64]; + unsigned char disklabel[276]; + unsigned char unused[140]; + u_int64_t count, start, flags; + u_int64_t checksum; + } srm; + struct { + u_int64_t contents[63]; + u_int64_t checksum; + } check; +}; + +#ifdef __alpha__ /* Should be test for little endian */ +unsigned int get_fat_entry (unsigned char *fat, int fatbits, unsigned entry) +{ + unsigned i, a, b; + + /* No check for fat boundaries... */ + switch (fatbits) { + case 12: + i = ((entry *= 3) & 7) << 2; /* Number of bits to shift */ + a = ((u_int32_t *)fat)[entry >>= 3]; + b = ((u_int32_t *)fat)[entry + 1]; /* May be outside FAT */ + return ((a >> i) | (b << (32 - i))) & 0xFFF; + case 16: + return ((u_int16_t *)fat)[entry]; + } + fprintf (stderr, "Unknown FAT type - FAT-%d\n", fatbits); + exit (3); +} +#else +// Portable Version from Falk Hueffner <falk.hueffner@student.uni-tuebingen.de> +unsigned int get_fat_entry (unsigned char *fat, int fatbits, unsigned entry) +{ + unsigned i, a, b; + + /* No check for fat boundaries... */ + switch (fatbits) { + case 12: + i = ((entry *= 3) & 7) << 2; /* Number of bits to shift */ + entry >>= 3; + a = DWORD(fat + 4 * entry); + b = DWORD(fat + 4 * entry + 4); + return ((a >> i) | (b << (32 - i))) & 0xFFF; + case 16: + return WORD(fat + 2 * entry); + } + fprintf (stderr, "Unknown FAT type - FAT-%d\n", fatbits); + exit (3); +} +#endif + +int main (int argc, char *argv[]) +{ + int f; + int i; + char *p; + union full_bootsector boot; + unsigned secsize; /* Bytes per sector, hopefully 512 */ + unsigned clusize; /* Cluster size in sectors */ + unsigned fatstart; /* Number of reserved (boot) sectors */ + unsigned nfat; /* Number of FAT tables, hopefully 2 */ + unsigned dirents; /* Number of directory slots */ + unsigned psect; /* Total sectors on disk */ + unsigned media; /* Media descriptor=first byte of FAT */ + unsigned fatsize; /* Sectors in FAT */ + unsigned fatbits; /* FAT type (bits per entry) */ + unsigned char *fat; + struct directory *rootdir; + unsigned start; /* Starting cluster of the boot file */ + unsigned size; /* Boot file size */ + unsigned fat_end; + unsigned j; + u_int64_t checksum; + char dosname[12]; + + if (argc != 3) + return printf ("Usage: srmbootfat <filesystem image file> <boot file>\n"), 1; + + if ((f = open (argv[1], O_RDWR)) < 0) + return perror (argv[1]), 2; + + if (read (f, &boot, sizeof boot) != sizeof boot) + return fprintf (stderr, "Can't read boot sector from %s\n", argv[1]), 2; + + secsize = _WORD (boot.dos.secsiz); + clusize = boot.dos.clsiz; + fatstart = WORD (boot.dos.nrsvsect); + nfat = boot.dos.nfat; + dirents = _WORD (boot.dos.dirents); + psect = _WORD (boot.dos.psect); + media = boot.dos.descr; + fatsize = WORD (boot.dos.fatlen); + + if ((media & ~7) == 0xf8) { + i = media & 3; + clusize = old_dos[i].cluster_size; + fatstart = 1; + fatsize = old_dos[i].fat_len; + dirents = old_dos[i].dir_len * (512 / MDIR_SIZE); + nfat = 2; + fatbits = 12; + } else if (strncmp (boot.dos.ext.old.fat_type, "FAT12", 5) == 0) + fatbits = 12; + else if (strncmp (boot.dos.ext.old.fat_type, "FAT16", 5) == 0) + fatbits = 16; + else return fprintf (stderr, "%s: unrecognisable FAT type\n", argv[1]), + 3; +#ifdef DEBUG + printf ("%s: filesystem type is FAT-%d\n", argv[1], fatbits); +#endif + + if (secsize != 512) + return fprintf (stderr, "%s: sector size is %d; " + "unfortunately, this is not supported\n", + argv[1], secsize), + 3; + if (nfat != 1 && nfat != 2) + fprintf (stderr, + "%s: warning: weird number of FAT tables (%d)\n", + argv[1], nfat); + + fat = malloc (i = fatsize * secsize); + rootdir = malloc (dirents * MDIR_SIZE); + if (!fat || !rootdir) + return fprintf (stderr, "Not enough memory\n"), 2; + if (lseek (f, fatstart * secsize, SEEK_SET) == -1 + || read (f, fat, i) != i + || lseek (f, (nfat - 1) * i, SEEK_CUR) == -1 + || read (f, rootdir, dirents * MDIR_SIZE) != dirents * MDIR_SIZE) + return perror (argv[1]), 2; + + memset (dosname, ' ', sizeof dosname); + i = 0; + for (p = argv[2]; *p; p++) + if (*p == '.') + i = 8; + else if (i < sizeof dosname) + dosname[i++] = toupper (*p); + + for (i = 0; i < dirents; i++) + if (memcmp (rootdir[i].name, dosname, 11) == 0 + && (rootdir[i].attr & (8 | 16)) == 0) + break; + if (i == dirents) + return fprintf (stderr, + "Can't find %s in the root directory in %s\n", + argv[2], argv[1]), 4; + + start = WORD (rootdir[i].start); + size = DWORD (rootdir[i].size); + + if (start * fatbits > fatsize * secsize * 8) + return fprintf (stderr, + "%s: first cluster (%u) is beyond the end of FAT", + argv[2], start), 3; + + /* Fill in the bootstrap information */ + size = (size + secsize - 1) / secsize; /* Size is now in sectors */ + boot.srm.start = (start - 2) * clusize + fatstart + nfat * fatsize + + dirents / (512 / MDIR_SIZE); + boot.srm.count = size; + boot.srm.flags = 0; + + /* Check that the image is contiguous */ + i = 1; + fat_end = (1 << fatbits) - 9; /* 0xFF7, 0xFFF7 or whatever */ + while ((j = get_fat_entry (fat, fatbits, start)) < fat_end) { + if (j != start + 1) + return fprintf (stderr, + "Unfortunately, %s is not contiguous\n", + argv[2]), 4; + start = j; + i++; + } + if ((size + clusize - 1) / clusize != i) + return fprintf (stderr, "Inconsistency: file size contradicts " + "with the number of clusters allocated\n"), 3; + + /* Put the checksum and write the boot sector. */ + checksum = 0; + for (i = 0; i < 63; i++) + checksum += boot.check.contents[i]; + boot.check.checksum = checksum; + + printf ("Writing SRM boot block: starting sector %u, block count %u\n", + (unsigned)boot.srm.start, (unsigned)boot.srm.count); + + if (lseek (f, 0, SEEK_SET) == -1 + || write (f, &boot, sizeof boot) != sizeof boot) + return perror (argv[2]), 2; + + close (f); + return 0; +} + +struct OldDos_t old_dos[]={ + { 40, 9, 1, 4, 1, 2, 0xfc }, + { 40, 9, 2, 7, 2, 2, 0xfd }, + { 40, 8, 1, 4, 1, 1, 0xfe }, + { 40, 8, 2, 7, 2, 1, 0xff }, + { 80, 9, 2, 7, 2, 3, 0xf9 }, + { 80, 15, 2,14, 1, 7, 0xf9 }, + { 80, 18, 2,14, 1, 9, 0xf0 }, + { 80, 36, 2,15, 2, 9, 0xf0 }, + { 1, 8, 1, 1, 1, 1, 0xf0 } +}; diff --git a/package/aboot/src/srmbootfat/srmbootfat.sgml b/package/aboot/src/srmbootfat/srmbootfat.sgml new file mode 100644 index 000000000..33d5f4d8f --- /dev/null +++ b/package/aboot/src/srmbootfat/srmbootfat.sgml @@ -0,0 +1,85 @@ +<!DOCTYPE RefEntry PUBLIC "-//OASIS//DTD DocBook V4.1//EN"> +<refentry id="srmbootfat"> + +<refmeta> +<refentrytitle>srmbootfat</refentrytitle> +<manvolnum>1</manvolnum> +<refmiscinfo>srmbootfat</refmiscinfo> +</refmeta> + +<refnamediv> +<refname>srmbootfat</refname> +<refpurpose> +Linux/Alpha SRM boot block composer +</refpurpose> +</refnamediv> + +<refsynopsisdiv> + <cmdsynopsis> + <command>srmbootfat</command> + <arg choice="plain">filesystem_image</arg> + <arg choice="plain">boot_file</arg> + </cmdsynopsis> +</refsynopsisdiv> + +<!-- <refsect1><title>COPYRIGHT</title> +<para> +</para> +</refsect1> --> + +<refsect1><title>DESCRIPTIONS</title> +<para> +<indexterm><primary>srmbootfat</primary></indexterm> +This tool is a quick hack and is not supposed to exist in its present +state for long. +</para> + +<para> +<application>Srmbootfat</application> finds <filename>boot_file</filename> +in the root directory of the <acronym>FAT</acronym> file system stored in file +<filename>filesystem_image</filename> +and makes it bootable by writing the appropriate SRM boot block into the +file system image file. This will work only on unpartitioned disks (such as +floppies), because otherwise the boot block would need to be written into the +partition table, which is outside the file system. However, a hard drive +containing a FAT file system would most probably be partitioned using the PC +partition table, which SRM cannot boot from anyway. +</para> + +<para> +The bootloader (<filename>boot_file</filename>) +must be contiguous, i.e. occupy consecutive blocks. +</para> +</refsect1> + +<refsect1><title>ARGUMENTS</title> +<para> +<variablelist> +<varlistentry><term><filename>filesystem_image</filename></term> +<listitem><para> +The name of the file containing a FAT file system image, e.g. +<filename>/dev/fd0</filename>. +</para></listitem></varlistentry> +<varlistentry><term><filename>boot_file</filename></term> +<listitem><para> +The file name of the bootloader. +</para></listitem></varlistentry> +</variablelist> +</refsect1> + +<!-- <refsect1><title>BUGS</title> +<para> +</para> +</refsect1> --> + +<refsect1><title>AUTHOR</title> +<para> +Nikita Schmidt <email>cetus@snowball.ucd.ie</email> +</para> +</refsect1> +<refsect1><title>SEE ALSO</title> +<para> +<application>aboot</application>(8), <application>mke2fs</application>(8), <application>e2writeboot</application>(8) +</para> +</refsect1> +</refentry> diff --git a/package/aboot/src/srmbootfat/srmbootraw.c b/package/aboot/src/srmbootfat/srmbootraw.c new file mode 100644 index 000000000..3bba2d577 --- /dev/null +++ b/package/aboot/src/srmbootfat/srmbootraw.c @@ -0,0 +1,101 @@ +/* + * SRMbootraw - SRM boot block composer for raw boot partitions. + * Copyright (C) 1998 Nikita Schmidt <cetus@snowball.ucd.ie> + * + * 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. + */ + +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include <fcntl.h> +#include <sys/types.h> + +/* We assume little endiannes and possibly other Alpha properties as well. */ +#ifndef __alpha__ +#error This stuff must be compiled for Alpha. +#endif + +#define BUFSIZE 65536 + +union bootsector { + struct { + unsigned char textlabel[64]; + unsigned char disklabel[276]; + unsigned char unused[140]; + u_int64_t count, start, flags; + u_int64_t checksum; + } srm; + struct { + u_int64_t contents[63]; + u_int64_t checksum; + } check; +}; + + +int main (int argc, char *argv[]) +{ + int device, image; + int i; + union bootsector boot; + char *buf; + unsigned long size; + ssize_t len; + u_int64_t checksum; + + if (argc != 3) + return printf ("Usage: srmbootraw <boot device> <boot image>\n"), 1; + + if ((device = open (argv[1], O_RDWR)) < 0) + return perror (argv[1]), 2; + if ((image = open (argv[2], O_RDONLY)) < 0) + return perror (argv[2]), 2; + + /* Read in the old bootsector */ + if (read (device, &boot, sizeof boot) != sizeof boot) + return fprintf (stderr, "Can't read boot sector from %s\n", argv[1]), 2; + + if (!(buf = malloc (BUFSIZE))) + return fprintf (stderr, "Can't allocate memory for %s\n", argv[2]), 2; + + /* Copy image onto the device */ + size = 0; + while ((len = read (image, buf, BUFSIZE)) > 0) + { + if (write (device, buf, len) != len) + return fprintf (stderr, "Can't write to %s\n", argv[1]), 2; + size += len; + } + close (image); + if (len == -1) + return perror (argv[2]), 2; + + /* Fill in the bootstrap information */ + boot.srm.start = 1; + boot.srm.count = (size + 511) / 512; /* Convert to sectors */ + boot.srm.flags = 0; + + /* Put the checksum and write the boot sector. */ + checksum = 0; + for (i = 0; i < 63; i++) + checksum += boot.check.contents[i]; + boot.check.checksum = checksum; + + printf ("Writing SRM boot block: starting sector %u, block count %u\n", + (unsigned)boot.srm.start, (unsigned)boot.srm.count); + + if (lseek (device, 0, SEEK_SET) == -1 + || write (device, &boot, sizeof boot) != sizeof boot) + return perror (argv[2]), 2; + + close (device); + return 0; +} diff --git a/package/aboot/src/srmbootfat/srmbootraw.sgml b/package/aboot/src/srmbootfat/srmbootraw.sgml new file mode 100644 index 000000000..6490854ce --- /dev/null +++ b/package/aboot/src/srmbootfat/srmbootraw.sgml @@ -0,0 +1,84 @@ +<!DOCTYPE RefEntry PUBLIC "-//OASIS//DTD DocBook V4.1//EN"> +<refentry id="srmbootraw"> + +<refmeta> +<refentrytitle>srmbootraw</refentrytitle> +<manvolnum>8</manvolnum> +<refmiscinfo>srmbootraw</refmiscinfo> +</refmeta> + +<refnamediv> +<refname>srmbootraw</refname> +<refpurpose> +Linux/Alpha SRM boot block composer +</refpurpose> +</refnamediv> + +<refsynopsisdiv> + <cmdsynopsis> + <command>srmbootraw</command> + <arg choice="plain">boot_device</arg> + <arg choice="plain">boot_file</arg> + </cmdsynopsis> +</refsynopsisdiv> + +<!-- <refsect1><title>COPYRIGHT</title> +<para> +</para> +</refsect1> --> + +<refsect1><title>DESCRIPTIONS</title> +<para> +<indexterm><primary>srmbootraw</primary></indexterm> +This tool is a quick hack and is not supposed to exist in its present +state for long. +</para> + +<para> +<application>Srmbootraw</application> writes the image from +<filename>boot_file</filename> +preceded by the appropriate SRM boot block into the first blocks of +<filename>boot_device</filename>, preserving the disklabel. +It is intended to be used when you have a small raw +partition at the beginning of your hard drive, dedicated for the bootloader. +If you don't, <filename>srmbootraw</filename> +will silently render your file system(s) unusable. +</para> +</refsect1> + +<refsect1><title>ARGUMENTS</title> +<para> +<variablelist> +<varlistentry><term><filename>boot_device</filename></term> +<listitem><para> +The device you intend to boot from, e.g. <filename>/dev/sda</filename>. +It must have enough room +at the beginning to hold the boot block and the bootloader. +</para></listitem></varlistentry> +<varlistentry><term><filename>boot_file</filename></term> +<listitem><para> +The file name of the bootloader. +</para></listitem></varlistentry> +</variablelist> +</refsect1> + +<!-- <refsect1><title>BUGS</title> +<para> +</para> +</refsect1> --> + +<refsect1><title>AUTHOR</title> +<para> +Nikita Schmidt <email>cetus@snowball.ucd.ie</email> +</para> +</refsect1> +<refsect1><title>SEE ALSO</title> +<para> +<application>aboot</application>(8), +<application>mke2fs</application>(8), +<application>swriteboot</application>(8), +<application>e2writeboot</application>(8), +<application>srmbootfat</application>(1) +</para> +</refsect1> +</refentry> |