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001 #!/bin/sh 001 #!/bin/sh 002 # Copyright (C) 2003, David Decotigny 002 # Copyright (C) 2003, David Decotigny 003 003 004 # This program is free software; you can redis 004 # This program is free software; you can redistribute it and/or 005 # modify it under the terms of the GNU General 005 # modify it under the terms of the GNU General Public License 006 # as published by the Free Software Foundation 006 # as published by the Free Software Foundation; either version 2 007 # of the License, or (at your option) any late 007 # of the License, or (at your option) any later version. 008 008 009 # This program is distributed in the hope that 009 # This program is distributed in the hope that it will be useful, 010 # but WITHOUT ANY WARRANTY; without even the i 010 # but WITHOUT ANY WARRANTY; without even the implied warranty of 011 # MERCHANTABILITY or FITNESS FOR A PARTICULAR 011 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 012 # GNU General Public License for more details. 012 # GNU General Public License for more details. 013 013 014 # You should have received a copy of the GNU G 014 # You should have received a copy of the GNU General Public License 015 # along with this program; if not, write to th 015 # along with this program; if not, write to the Free Software 016 # Foundation, Inc., 59 Temple Place - Suite 33 016 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 017 # USA. 017 # USA. 018 018 019 # 1) What does it do ? 019 # 1) What does it do ? 020 # 020 # 021 # 1) Check where Grub is installed (lookup_gr 021 # 1) Check where Grub is installed (lookup_grub) 022 # 2) Assign some local variables using the sh 022 # 2) Assign some local variables using the shell script arguments. 023 # a) Argument 1 : the destination (eithe 023 # a) Argument 1 : the destination (either a file or a drive, like a:) 024 # b) Argument 2 : the loader (i.e kernel) 024 # b) Argument 2 : the loader (i.e kernel) 025 # c) Argument 3 : options passed to the l 025 # c) Argument 3 : options passed to the loader 026 # d) Argument 4 : the modules (that can b 026 # d) Argument 4 : the modules (that can be loaded optionally by Grub) 027 # 3) Test whether destination is a drive or a 027 # 3) Test whether destination is a drive or a file 028 # 4) Create the directory structure inside th 028 # 4) Create the directory structure inside the drive 029 # 5) Copy the loader in the drive 029 # 5) Copy the loader in the drive 030 # 6) Generate the 'menu.txt' file used by Gru 030 # 6) Generate the 'menu.txt' file used by Grub to generate the boot menu 031 # 7) Copy all modules 031 # 7) Copy all modules 032 # 8) Copy the menu.txt file 032 # 8) Copy the menu.txt file 033 # 033 # 034 # 2) Why is it so complex ? 034 # 2) Why is it so complex ? 035 # Because it must support various Grub/mtoo 035 # Because it must support various Grub/mtools installations and versions 036 # 036 # 037 # In fact, this shell script is used in the KO 037 # In fact, this shell script is used in the KOS (kos.enix.org) 038 # project. This operating system consists in a 038 # project. This operating system consists in a loader and many many 039 # modules that are linked together at boot tim 039 # modules that are linked together at boot time. It is much more 040 # complex that a simple monolithic kernel. 040 # complex that a simple monolithic kernel. 041 # 041 # 042 # For your simple monolithic kernel, you only 042 # For your simple monolithic kernel, you only need to give argument 1 043 # and 2. 043 # and 2. 044 044 045 print_usage () { 045 print_usage () { 046 echo "Usage: $0 [X:|image] path/to/loader op 046 echo "Usage: $0 [X:|image] path/to/loader option path/to/modules..." 047 echo " where X: is a valid floppy driv 047 echo " where X: is a valid floppy drive on your computer" 048 echo " where image is any file name" 048 echo " where image is any file name" 049 exit 1 049 exit 1 050 } 050 } 051 051 052 grub_dirs_common="/usr/local/share/grub/i386-f 052 grub_dirs_common="/usr/local/share/grub/i386-freebsd /usr/local/share/grub/i386-pc /usr/share/grub/i386-pc /usr/lib/grub/i386-pc /usr/local/grub /usr/share/grub/i386-redhat /usr/local/src/grub-0.5.94 $HOME/share/grub/i386-pc/" 053 sbin_grub_path="/usr/local/sbin /usr/sbin /sbi 053 sbin_grub_path="/usr/local/sbin /usr/sbin /sbin $HOME/sbin" 054 054 055 PATH=$PATH:/sbin:/usr/sbin:/usr/local/sbin 055 PATH=$PATH:/sbin:/usr/sbin:/usr/local/sbin 056 export PATH 056 export PATH 057 057 058 MTOOLSRC=mtoolsrc 058 MTOOLSRC=mtoolsrc 059 export MTOOLSRC 059 export MTOOLSRC 060 060 061 # Redefined variables 061 # Redefined variables 062 FLOPPY_DRIVE=A: 062 FLOPPY_DRIVE=A: 063 IMG_FNAME=fd.img 063 IMG_FNAME=fd.img 064 064 065 ## 065 ## 066 ## Format disk image 066 ## Format disk image 067 ## 067 ## 068 init_image () { 068 init_image () { 069 echo "Initialize disk image $IMG_FILE..." 069 echo "Initialize disk image $IMG_FILE..." 070 if [ ! -f $IMG_FNAME ] ; then 070 if [ ! -f $IMG_FNAME ] ; then 071 dd if=/dev/zero of=$IMG_FNAME bs=18k count 071 dd if=/dev/zero of=$IMG_FNAME bs=18k count=80 1>/dev/null 2>&1 072 fi 072 fi 073 073 074 rm -f $MTOOLSRC 074 rm -f $MTOOLSRC 075 echo "drive u: file=\"$IMG_FNAME\" 1.44M fil 075 echo "drive u: file=\"$IMG_FNAME\" 1.44M filter" > $MTOOLSRC 076 076 077 if mformat U: ; then : ; else 077 if mformat U: ; then : ; else 078 rm -f $MTOOLSRC 078 rm -f $MTOOLSRC 079 echo "drive u: file=\"$IMG_FNAME\" 1.44M" 079 echo "drive u: file=\"$IMG_FNAME\" 1.44M" > $MTOOLSRC 080 if mformat U: ; then : ; else 080 if mformat U: ; then : ; else 081 rm -f $MTOOLSRC 081 rm -f $MTOOLSRC 082 echo "drive u: file=\"$IMG_FNAME\"" > $M 082 echo "drive u: file=\"$IMG_FNAME\"" > $MTOOLSRC 083 mformat U: 083 mformat U: 084 fi 084 fi 085 fi 085 fi 086 } 086 } 087 087 088 088 089 ## 089 ## 090 ## Format (real) floppy disk 090 ## Format (real) floppy disk 091 ## 091 ## 092 init_floppy () { 092 init_floppy () { 093 echo "Formatting floppy..." 093 echo "Formatting floppy..." 094 mformat $FLOPPY_DRIVE || exit 1 094 mformat $FLOPPY_DRIVE || exit 1 095 } 095 } 096 096 097 097 098 lookup_grub () { 098 lookup_grub () { 099 # Look for a correct GRUBDIR 099 # Look for a correct GRUBDIR 100 for d in $grub_dirs_common ; do 100 for d in $grub_dirs_common ; do 101 if [ -d $d ] ; then 101 if [ -d $d ] ; then 102 GRUBDIR=$d 102 GRUBDIR=$d 103 break 103 break 104 fi 104 fi 105 done 105 done 106 106 107 # Try to guess with whereis (Credits to Kari 107 # Try to guess with whereis (Credits to Karim Dridi) 108 if [ ! -d "$GRUBDIR" ] ; then 108 if [ ! -d "$GRUBDIR" ] ; then 109 GRUBDIR=`whereis grub | awk '{ print "find 109 GRUBDIR=`whereis grub | awk '{ print "find "$3" -name stage2" }' | sh | xargs dirname 2>/dev/null` 110 fi 110 fi 111 111 112 # Try to guess with locate 112 # Try to guess with locate 113 if [ ! -d "$GRUBDIR" ] ; then 113 if [ ! -d "$GRUBDIR" ] ; then 114 GRUBDIR=`locate stage2 | head -1 | xargs 114 GRUBDIR=`locate stage2 | head -1 | xargs dirname 2>/dev/null` 115 fi 115 fi 116 116 117 # Look for a correct sbin/grub 117 # Look for a correct sbin/grub 118 for d in $sbin_grub_path ; do 118 for d in $sbin_grub_path ; do 119 if [ -x $d/grub ] ; then 119 if [ -x $d/grub ] ; then 120 SBIN_GRUB=$d/grub 120 SBIN_GRUB=$d/grub 121 break 121 break 122 fi 122 fi 123 done 123 done 124 124 125 if [ -d "$GRUBDIR" -a -x "$SBIN_GRUB" ] ; th 125 if [ -d "$GRUBDIR" -a -x "$SBIN_GRUB" ] ; then 126 echo "Found correct grub installation in $ 126 echo "Found correct grub installation in $GRUBDIR" 127 echo "Found correct /sbin/grub at $SBIN_GR 127 echo "Found correct /sbin/grub at $SBIN_GRUB" 128 else 128 else 129 echo "Couldn't find a correct grub install 129 echo "Couldn't find a correct grub installation." 130 exit 1 130 exit 1 131 fi 131 fi 132 } 132 } 133 133 134 ## 134 ## 135 ## setup_disk [drive] 135 ## setup_disk [drive] 136 ## => setup disk directory structure / copy fi 136 ## => setup disk directory structure / copy files 137 ## 137 ## 138 setup_disk () { 138 setup_disk () { 139 echo "Setup destination disk..." 139 echo "Setup destination disk..." 140 140 141 mmd $1/boot 141 mmd $1/boot 142 mmd $1/boot/grub 142 mmd $1/boot/grub 143 143 144 if [ -d $GRUBDIR/stage1 ] ; then 144 if [ -d $GRUBDIR/stage1 ] ; then 145 mcopy $GRUBDIR/stage1/stage1 $1/boot/grub/ 145 mcopy $GRUBDIR/stage1/stage1 $1/boot/grub/ 146 mcopy $GRUBDIR/stage2/stage2 $1/boot/grub/ 146 mcopy $GRUBDIR/stage2/stage2 $1/boot/grub/ 147 else 147 else 148 mcopy $GRUBDIR/stage1 $1/boot/grub/ 148 mcopy $GRUBDIR/stage1 $1/boot/grub/ 149 mcopy $GRUBDIR/stage2 $1/boot/grub/ 149 mcopy $GRUBDIR/stage2 $1/boot/grub/ 150 fi 150 fi 151 mmd $1/system 151 mmd $1/system 152 mmd $1/modules 152 mmd $1/modules 153 153 154 $SBIN_GRUB --batch --no-floppy <<EOT 1>/dev/ 154 $SBIN_GRUB --batch --no-floppy <<EOT 1>/dev/null 2>/dev/null || exit 1 155 device (fd0) $IMG_FNAME 155 device (fd0) $IMG_FNAME 156 install (fd0)/boot/grub/stage1 (fd0) (fd0)/boo 156 install (fd0)/boot/grub/stage1 (fd0) (fd0)/boot/grub/stage2 p (fd0)/boot/grub/menu.txt 157 quit 157 quit 158 EOT 158 EOT 159 } 159 } 160 160 161 161 162 162 163 ############################################## 163 ################################################# 164 ## Real start 164 ## Real start 165 ## 165 ## 166 #[ "$#" -lt 3 ] && print_usage 166 #[ "$#" -lt 3 ] && print_usage 167 167 168 lookup_grub 168 lookup_grub 169 169 170 dest="$1" ; shift 170 dest="$1" ; shift 171 loader_fname="$1" ; shift 171 loader_fname="$1" ; shift 172 options="$1" ; shift 172 options="$1" ; shift 173 modules="$*" 173 modules="$*" 174 174 175 # Init destination disk 175 # Init destination disk 176 case x$dest in 176 case x$dest in 177 x*:) 177 x*:) 178 drive=$dest 178 drive=$dest 179 IMG_FNAME=$dest 179 IMG_FNAME=$dest 180 FLOPPY_DRIVE=$dest 180 FLOPPY_DRIVE=$dest 181 init_floppy 181 init_floppy 182 ;; 182 ;; 183 x*) 183 x*) 184 drive=U: 184 drive=U: 185 IMG_FNAME=$dest 185 IMG_FNAME=$dest 186 init_image 186 init_image 187 ;; 187 ;; 188 esac 188 esac 189 189 190 # Create directory structure 190 # Create directory structure 191 setup_disk $drive 191 setup_disk $drive 192 192 193 # Copy the loader 193 # Copy the loader 194 mcopy -bo $loader_fname $drive/system/`basenam 194 mcopy -bo $loader_fname $drive/system/`basename $loader_fname` 195 195 196 # Generate the menu.txt file 196 # Generate the menu.txt file 197 rm -f menu.txt 197 rm -f menu.txt 198 cat <<EOF > menu.txt 198 cat <<EOF > menu.txt 199 timeout 0 199 timeout 0 200 default 0 200 default 0 201 title Simple OS 201 title Simple OS 202 root (fd0) 202 root (fd0) 203 kernel /system/`basename $loader_fname` $optio 203 kernel /system/`basename $loader_fname` $options 204 EOF 204 EOF 205 205 206 # Copy the modules 206 # Copy the modules 207 for f in $modules ; do 207 for f in $modules ; do 208 if [ ! -f $f ] ; then 208 if [ ! -f $f ] ; then 209 echo "ERROR: module $f not correctly c 209 echo "ERROR: module $f not correctly compiled in." 210 exit 1 210 exit 1 211 fi 211 fi 212 if ! mcopy -bo $f $drive/modules/`basename 212 if ! mcopy -bo $f $drive/modules/`basename $f` ; then 213 echo "ERROR: module $f could not be tr 213 echo "ERROR: module $f could not be transferred to floppy." 214 exit 1 214 exit 1 215 fi 215 fi 216 echo module /modules/`basename $f` >> menu 216 echo module /modules/`basename $f` >> menu.txt 217 done 217 done 218 218 219 # Transfers the menu.txt file to floppy 219 # Transfers the menu.txt file to floppy 220 mcopy -bo menu.txt $drive/boot/grub/ 220 mcopy -bo menu.txt $drive/boot/grub/
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