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Add option to read in bootcode from a file.
Upstream-Status: Inappropriate [licensing]
We're tracking an old release of dosfstools due to licensing issues.
Signed-off-by: Scott Garman <scott.a.garman@intel.com>
Index: dosfstools-2.11/mkdosfs/ChangeLog
===================================================================
--- dosfstools-2.11.orig/mkdosfs/ChangeLog 1997-06-18 10:09:38.000000000 +0000
+++ dosfstools-2.11/mkdosfs/ChangeLog 2011-12-06 12:14:23.634011558 +0000
@@ -1,3 +1,14 @@
+19th June 2003 Sam Bingner (sam@bingner.com)
+
+ Added option to read in bootcode from a file so that if you have
+ for example Windows 2000 boot code, you can have it write that
+ as the bootcode. This is a dump of the behinning of a partition
+ generally 512 bytes, but can be up to reserved sectors*512 bytes.
+ Also writes 0x80 as the BIOS drive number if we are formatting a
+ hard drive, and sets the number of hidden sectors to be the
+ number of sectors in one track. These were required so that DOS
+ could boot using the bootcode.
+
28th January 1995 H. Peter Anvin (hpa@yggdrasil.com)
Better algorithm to select cluster sizes on large filesystems.
Index: dosfstools-2.11/mkdosfs/mkdosfs.8
===================================================================
--- dosfstools-2.11.orig/mkdosfs/mkdosfs.8 2004-02-25 19:36:07.000000000 +0000
+++ dosfstools-2.11/mkdosfs/mkdosfs.8 2011-12-06 12:19:54.777888434 +0000
@@ -44,6 +44,10 @@
.I message-file
]
[
+.B \-B
+.I bootcode-file
+]
+[
.B \-n
.I volume-name
]
@@ -165,6 +169,18 @@
carriage return-line feed combinations, and tabs have been expanded.
If the filename is a hyphen (-), the text is taken from standard input.
.TP
+.BI \-B " bootcode-file"
+Uses boot machine code from file "file". On any thing other than FAT32,
+this only writes the first 3 bytes, and 480 bytes from offset 3Eh. On
+FAT32, this writes the first 3 bytes, 420 bytes from offset 5Ah to both
+primary and backup boot sectors. Also writes all other reserved sectors
+excluding the sectors following boot sectors (usually sector 2 and 7).
+Does not require that the input file be as large as reserved_sectors*512.
+To make a FAT32 partition bootable, you will need at least the first
+13 sectors (6656 bytes). You can also specify a partition as the argument
+to clone the boot code from that partition.
+i.e mkdosfs -B /dev/sda1 /dev/sda1
+.TP
.BI \-n " volume-name"
Sets the volume name (label) of the filesystem. The volume name can
be up to 11 characters long. The default is no label.
@@ -198,8 +214,9 @@
simply will not support it ;)
.SH AUTHOR
Dave Hudson - <dave@humbug.demon.co.uk>; modified by Peter Anvin
-<hpa@yggdrasil.com>. Fixes and additions by Roman Hodek
-<roman@hodek.net> for Debian/GNU Linux.
+<hpa@yggdrasil.com> and Sam Bingner <sam@bingner.com>. Fixes and
+additions by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
+for Debian/GNU Linux.
.SH ACKNOWLEDGEMENTS
.B mkdosfs
is based on code from
Index: dosfstools-2.11/mkdosfs/mkdosfs.c
===================================================================
--- dosfstools-2.11.orig/mkdosfs/mkdosfs.c 2005-03-12 16:12:16.000000000 +0000
+++ dosfstools-2.11/mkdosfs/mkdosfs.c 2011-12-06 12:27:55.121886076 +0000
@@ -24,6 +24,12 @@
- New options -A, -S, -C
- Support for filesystems > 2GB
- FAT32 support
+
+ Fixes/additions June 2003 by Sam Bingner
+ <sam@bingner.com>:
+ - Add -B option to read in bootcode from a file
+ - Write BIOS drive number so that FS can properly boot
+ - Set number of hidden sectors before boot code to be one track
Copying: Copyright 1993, 1994 David Hudson (dave@humbug.demon.co.uk)
@@ -153,6 +159,8 @@
#define FAT_BAD 0x0ffffff7
#define MSDOS_EXT_SIGN 0x29 /* extended boot sector signature */
+#define HD_DRIVE_NUMBER 0x80 /* Boot off first hard drive */
+#define FD_DRIVE_NUMBER 0x00 /* Boot off first floppy drive */
#define MSDOS_FAT12_SIGN "FAT12 " /* FAT12 filesystem signature */
#define MSDOS_FAT16_SIGN "FAT16 " /* FAT16 filesystem signature */
#define MSDOS_FAT32_SIGN "FAT32 " /* FAT32 filesystem signature */
@@ -175,6 +183,8 @@
#define BOOTCODE_SIZE 448
#define BOOTCODE_FAT32_SIZE 420
+#define MAX_RESERVED 0xFFFF
+
/* __attribute__ ((packed)) is used on all structures to make gcc ignore any
* alignments */
@@ -202,7 +212,7 @@
__u16 fat_length; /* sectors/FAT */
__u16 secs_track; /* sectors per track */
__u16 heads; /* number of heads */
- __u32 hidden; /* hidden sectors (unused) */
+ __u32 hidden; /* hidden sectors (one track) */
__u32 total_sect; /* number of sectors (if sectors == 0) */
union {
struct {
@@ -285,6 +295,8 @@
/* Global variables - the root of all evil :-) - see these and weep! */
+static char *template_boot_code; /* Variable to store a full template boot sector in */
+static int use_template = 0;
static char *program_name = "mkdosfs"; /* Name of the program */
static char *device_name = NULL; /* Name of the device on which to create the filesystem */
static int atari_format = 0; /* Use Atari variation of MS-DOS FS format */
@@ -837,6 +849,12 @@
vi->volume_id[2] = (unsigned char) ((volume_id & 0x00ff0000) >> 16);
vi->volume_id[3] = (unsigned char) (volume_id >> 24);
}
+ if (bs.media == 0xf8) {
+ vi->drive_number = HD_DRIVE_NUMBER; /* Set bios drive number to 80h */
+ }
+ else {
+ vi->drive_number = FD_DRIVE_NUMBER; /* Set bios drive number to 00h */
+ }
if (!atari_format) {
memcpy(vi->volume_label, volume_name, 11);
@@ -1362,6 +1380,32 @@
* dir area on FAT12/16, and the first cluster on FAT32. */
writebuf( (char *) root_dir, size_root_dir, "root directory" );
+ if (use_template == 1) {
+ /* dupe template into reserved sectors */
+ seekto( 0, "Start of partition" );
+ if (size_fat == 32) {
+ writebuf( template_boot_code, 3, "backup jmpBoot" );
+ seekto( 0x5a, "sector 1 boot area" );
+ writebuf( template_boot_code+0x5a, 420, "sector 1 boot area" );
+ seekto( 512*2, "third sector" );
+ if (backup_boot != 0) {
+ writebuf( template_boot_code+512*2, backup_boot*sector_size - 512*2, "data to backup boot" );
+ seekto( backup_boot*sector_size, "backup boot sector" );
+ writebuf( template_boot_code, 3, "backup jmpBoot" );
+ seekto( backup_boot*sector_size+0x5a, "backup boot sector boot area" );
+ writebuf( template_boot_code+0x5a, 420, "backup boot sector boot area" );
+ seekto( (backup_boot+2)*sector_size, "sector following backup code" );
+ writebuf( template_boot_code+(backup_boot+2)*sector_size, (reserved_sectors-backup_boot-2)*512, "remaining data" );
+ } else {
+ writebuf( template_boot_code+512*2, (reserved_sectors-2)*512, "remaining data" );
+ }
+ } else {
+ writebuf( template_boot_code, 3, "jmpBoot" );
+ seekto( 0x3e, "sector 1 boot area" );
+ writebuf( template_boot_code+0x3e, 448, "boot code" );
+ }
+ }
+
if (blank_sector) free( blank_sector );
if (info_sector) free( info_sector );
free (root_dir); /* Free up the root directory space from setup_tables */
@@ -1376,7 +1420,7 @@
{
fatal_error("\
Usage: mkdosfs [-A] [-c] [-C] [-v] [-I] [-l bad-block-file] [-b backup-boot-sector]\n\
- [-m boot-msg-file] [-n volume-name] [-i volume-id]\n\
+ [-m boot-msg-file] [-n volume-name] [-i volume-id] [-B bootcode]\n\
[-s sectors-per-cluster] [-S logical-sector-size] [-f number-of-FATs]\n\
[-h hidden-sectors] [-F fat-size] [-r root-dir-entries] [-R reserved-sectors]\n\
/dev/name [blocks]\n");
@@ -1439,7 +1483,7 @@
printf ("%s " VERSION " (" VERSION_DATE ")\n",
program_name);
- while ((c = getopt (argc, argv, "AbcCf:F:Ii:l:m:n:r:R:s:S:h:v")) != EOF)
+ while ((c = getopt (argc, argv, "AbcCf:F:Ii:l:m:n:r:R:s:S:v:B:")) != EOF)
/* Scan the command line for options */
switch (c)
{
@@ -1509,6 +1553,51 @@
listfile = optarg;
break;
+ case 'B': /* B : read in bootcode */
+ if ( strcmp(optarg, "-") )
+ {
+ msgfile = fopen(optarg, "r");
+ if ( !msgfile )
+ perror(optarg);
+ }
+ else
+ msgfile = stdin;
+
+ if ( msgfile )
+ {
+ if (!(template_boot_code = malloc( MAX_RESERVED )))
+ die( "Out of memory" );
+ /* The template boot sector including reserved must not be > 65535 */
+ use_template = 1;
+ i = 0;
+ do
+ {
+ ch = getc(msgfile);
+ switch (ch)
+ {
+ case EOF:
+ break;
+
+ default:
+ template_boot_code[i++] = ch; /* Store character */
+ break;
+ }
+ }
+ while ( ch != EOF && i < MAX_RESERVED );
+ ch = getc(msgfile); /* find out if we're at EOF */
+
+ /* Fill up with zeros */
+ while( i < MAX_RESERVED )
+ template_boot_code[i++] = '\0';
+
+ if ( ch != EOF )
+ printf ("Warning: template too long; truncated after %d bytes\n", i);
+
+ if ( msgfile != stdin )
+ fclose(msgfile);
+ }
+ break;
+
case 'm': /* m : Set boot message */
if ( strcmp(optarg, "-") )
{
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