wok annotate linux/stuff/bootloader.sh @ rev 21787
voxelands: update bdeps
author | Pascal Bellard <pascal.bellard@slitaz.org> |
---|---|
date | Wed Jul 24 14:51:54 2019 +0200 (2019-07-24) |
parents | 1ed0f1f453b3 |
children |
rev | line source |
---|---|
pascal@4504 | 1 #!/bin/sh |
pascal@4504 | 2 # |
pascal@4504 | 3 # This script creates a floppy image set from a linux bzImage and can merge |
pascal@4504 | 4 # a cmdline and/or one or more initramfs. |
pascal@4504 | 5 # The total size can not exceed 15M because INT 15H function 87H limitations. |
pascal@4504 | 6 # |
pascal@4504 | 7 # (C) 2009 Pascal Bellard - GNU General Public License v3. |
pascal@4504 | 8 |
pascal@4504 | 9 usage() |
pascal@4504 | 10 { |
pascal@4504 | 11 cat <<EOT |
pascal@12826 | 12 Usage: $0 bzImage [--prefix image_prefix] [--info file ] |
pascal@12557 | 13 [--format 1200|1440|1680|1920|2880|... ] [--mem mb] |
pascal@6715 | 14 [--rdev device] [--video mode] [--flags rootflags] [--tracks cnt] |
pascal@12557 | 15 [--cmdline 'args'] [--dont-edit-cmdline] [--no-syssize-fix] |
pascal@12557 | 16 [--address-initrd address] [--initrd initrdfile]... |
pascal@6715 | 17 |
pascal@12557 | 18 Default values: --format 1440 --tracks 80 --rdev /dev/fd0 --prefix floppy. --mem 16 |
pascal@11175 | 19 |
pascal@4504 | 20 Example: |
pascal@12557 | 21 $0 /boot/bzImage --rdev /dev/ram0 --video -3 --cmdline 'rw lang=fr_FR kmap=fr-latin1 laptop autologin' --initrd /boot/rootfs.gz --initrd ./myconfig.gz |
pascal@4504 | 22 EOT |
pascal@4504 | 23 exit 1 |
pascal@4504 | 24 } |
pascal@4504 | 25 |
pascal@12557 | 26 KERNEL="" |
pascal@12557 | 27 INITRD="" |
pascal@12557 | 28 ADRSRD="" |
pascal@12557 | 29 CMDLINE="" |
pascal@12557 | 30 PREFIX="floppy." |
pascal@12557 | 31 FORMAT="1440" |
pascal@12557 | 32 RDEV="" |
pascal@12557 | 33 VIDEO="" |
pascal@12557 | 34 FLAGS="" |
pascal@12557 | 35 TRACKS="80" |
pascal@12557 | 36 MEM="16" |
pascal@12557 | 37 NOEDIT="" |
pascal@12557 | 38 NOSYSSIZEFIX="" |
pascal@12826 | 39 INFOFILE="" |
pascal@12557 | 40 DEBUG="" |
pascal@12557 | 41 while [ -n "$1" ]; do |
pascal@12557 | 42 case "${1/--/-}" in |
pascal@12557 | 43 -c*) CMDLINE="$2"; shift;; |
pascal@12826 | 44 -inf*) INFOFILE="$2"; shift;; |
pascal@12557 | 45 -i*) INITRD="$INITRD $2"; shift;; |
pascal@12557 | 46 -a*) ADRSRD="$2"; shift;; |
pascal@12557 | 47 -h*) HEAP="$2"; shift;; |
pascal@12557 | 48 -l*) LOADERTYPE="$2"; shift;; |
pascal@12557 | 49 -p*) PREFIX="$2"; shift;; |
pascal@12557 | 50 -fl*)FLAGS="$2"; shift;; # 1 read-only, 0 read-write |
pascal@12557 | 51 -f*) FORMAT="$2"; shift;; |
pascal@12557 | 52 -m*) MEM="$(echo $2 | sed 's/[^0-9]//g')"; shift;; |
pascal@12557 | 53 -r*) RDEV="$2"; shift;; |
pascal@12557 | 54 -v*) VIDEO="$2"; shift;; # -3 .. n |
pascal@12557 | 55 -t*) TRACKS="$2"; shift;; # likely 81 .. 84 |
pascal@12557 | 56 -n*) NOSYSSIZEFIX="1";; |
pascal@12557 | 57 -debug) DEBUG="1";; |
pascal@12557 | 58 -d*) NOEDIT="1";; |
pascal@12557 | 59 *) KERNEL="$1";; |
pascal@12557 | 60 esac |
pascal@12557 | 61 shift |
pascal@12557 | 62 done |
pascal@12557 | 63 [ -n "$KERNEL" -a -f "$KERNEL" ] || usage |
pascal@12557 | 64 while [ -L "$KERNEL" ]; do KERNEL="$(readlink "$KERNEL")"; done |
pascal@12557 | 65 if [ $(( $FORMAT % $TRACKS )) -ne 0 ]; then |
pascal@12557 | 66 echo "Invalid track count for format $FORMAT." |
pascal@12557 | 67 usage |
pascal@12557 | 68 fi |
pascal@12557 | 69 [ 0$MEM -lt 4 ] && MEM=4 |
pascal@12557 | 70 [ $MEM -gt 16 ] && MEM=16 |
pascal@12557 | 71 |
pascal@12557 | 72 ddq() { dd $@ 2> /dev/null; } |
pascal@12557 | 73 |
pascal@12557 | 74 patch() |
pascal@11175 | 75 { |
pascal@12557 | 76 echo -en $(echo ":$2" | sed 's/:/\\x/g') | \ |
pascal@12557 | 77 ddq bs=1 conv=notrunc of=$3 seek=$((0x$1)) |
pascal@12557 | 78 [ -n "$DEBUG" ] && echo "patch $1 $2 $4" 1>&2 |
pascal@11175 | 79 } |
pascal@4504 | 80 |
pascal@12557 | 81 # usage: store bits offset data file |
pascal@12557 | 82 store() |
pascal@6713 | 83 { |
pascal@12557 | 84 n=$3; for i in $(seq 8 8 $1); do |
pascal@12557 | 85 printf '\\\\x%02X' $(($n & 255)) |
pascal@12557 | 86 n=$(($n >> 8)) |
pascal@12557 | 87 done | xargs echo -en | ddq bs=1 conv=notrunc of=$4 seek=$(($2)) |
pascal@12557 | 88 [ -n "$DEBUG" ] && printf "store%d(%03X) = %0$(($1/4))X %s\n" $1 $2 $3 "$5" 1>&2 |
pascal@6713 | 89 } |
pascal@6713 | 90 |
pascal@13660 | 91 # usage: getlong offset file [bytes] |
pascal@12557 | 92 getlong() |
pascal@4504 | 93 { |
pascal@13903 | 94 echo $(od -j $1 -N ${3:-4} -t u${3:-4} -An $2) |
pascal@4504 | 95 } |
pascal@4504 | 96 |
pascal@12557 | 97 error() |
pascal@4504 | 98 { |
pascal@12557 | 99 echo $@ 1>&2 |
pascal@12557 | 100 rm -f $bs |
pascal@12557 | 101 exit 1 |
pascal@4504 | 102 } |
pascal@4504 | 103 |
pascal@4504 | 104 floppyset() |
pascal@4504 | 105 { |
pascal@4504 | 106 # bzImage offsets |
pascal@12557 | 107 SetupSzOfs=497 |
pascal@12557 | 108 FlagsOfs=498 |
pascal@12557 | 109 VideoModeOfs=506 |
pascal@12557 | 110 RootDevOfs=508 |
pascal@12557 | 111 Magic=0x202 |
pascal@4504 | 112 RamfsAdrOfs=0x218 |
pascal@12557 | 113 RamfsLenOfs=0x21C |
pascal@4504 | 114 |
pascal@4504 | 115 # boot+setup address |
pascal@4504 | 116 SetupBase=0x90000 |
pascal@4504 | 117 |
pascal@4504 | 118 bs=/tmp/bs$$ |
pascal@4504 | 119 |
pascal@4504 | 120 # Get and patch boot sector |
pascal@12563 | 121 # See http://hg.slitaz.org/wok/raw-file/66e38bd6a132/linux/stuff/linux-header.u |
pascal@12557 | 122 [ -n "$DEBUG" ] && echo "Read bootsector..." 1>&2 |
pascal@11175 | 123 ddq if=$KERNEL bs=512 count=1 of=$bs |
pascal@12557 | 124 |
pascal@13660 | 125 [ $(getlong 0x1FE $bs 2) -eq 43605 ] || error "Not bootable" |
pascal@12557 | 126 |
pascal@11175 | 127 uudecode <<EOT | ddq of=$bs conv=notrunc |
pascal@4504 | 128 begin-base64 644 - |
pascal@12557 | 129 /L+4nWgAkBeJ/BYHMcC5HgDzq1sfD6Gg8X1AxXd4BlexBvOlFh9kZo9HeMZF |
pascal@12557 | 130 +D/6l1hB6DwBvgACgUwQIIDGRCWbA3QO6GoBWwseKAJ0LFNH6AYBXuhaAbAg |
pascal@12557 | 131 zRCwCM0QTuhZATwIdAOIBK05NigCdPDoMgE8CnXgiHz+W4nm/0gQxkAVk4Dz |
pascal@12557 | 132 CHX0u/QBoRUCsQVmix9mS2bT60NoAAgHv4AAiXwTiUQbAfjR7yn7nHMCAd9Q |
pascal@12557 | 133 V1ZTMdvongBbXlmGzbSHFgfNFVidd9ChGQK7HAKxCTlEG3K6l80T6gAAIJCw |
pascal@12557 | 134 RijIvtgB6MoAXesjgPkTcgQ4wXdrgP4CcgQ45ndsYIH9AAZ0KgZSUVOWtAJQ |
pascal@12557 | 135 sQa1BMHFBLAPIegEkCcUQCfohAD+zXXssCDNEOK06I4AmM0TYVJQKMh3ArAB |
pascal@12557 | 136 mDn4cgKJ+FC0As0TlV5YWnKglUGO6YDHAk90S0519IzplTjBdT+IyP7GsQE4 |
pascal@12557 | 137 5nU1iPT+xYD9ULYAdSq1AGC+2wH+RAxT6C8AW+g2AHUWUpjNE7gBAs0TWtDU |
pascal@12557 | 138 OmT+depGCOR15WHrkbAxLAO0DrsHAM0QPA1088OwDejv/6wIwHX4w79sBLFb |
pascal@12557 | 139 ZAINuA0BZDoNdArNFnT0mM0WjudHw1g6AEluc2VydCBkaXNrIDEHDQA= |
pascal@4504 | 140 ==== |
pascal@4504 | 141 EOT |
pascal@4504 | 142 # Get setup |
pascal@13660 | 143 setupsz=$(getlong $SetupSzOfs $bs 1) |
pascal@12557 | 144 if [ $setupsz -eq 0 ]; then |
pascal@12557 | 145 setupsz=4 |
pascal@12557 | 146 store 8 $SetupSzOfs $setupsz $bs "setup size $setupsz" |
pascal@12557 | 147 fi |
pascal@12557 | 148 [ -n "$DEBUG" ] && echo "Read setup ($setupsz sectors) ..." 1>&2 |
pascal@11175 | 149 ddq if=$KERNEL bs=512 skip=1 count=$setupsz >> $bs |
pascal@4504 | 150 |
pascal@13660 | 151 Version=$(getlong 0x206 $bs 2) |
pascal@12557 | 152 [ $(getlong $Magic $bs) -ne 1400005704 ] && Version=0 |
pascal@12557 | 153 feature="" |
pascal@12557 | 154 while read prot kern info ; do |
pascal@12557 | 155 [ $Version -lt $((0x$prot)) ] && continue |
pascal@12557 | 156 feature="features $prot starting from kernel $kern " |
pascal@12557 | 157 done <<EOT |
pascal@12557 | 158 200 1.3.73 kernel_version, bzImage, initrd, loadflags/type_of_loader |
pascal@12557 | 159 201 1.3.76 heap_end_ptr |
pascal@12557 | 160 202 2.4.0 new cmdline |
pascal@12557 | 161 204 2.6.14 long syssize |
pascal@12557 | 162 EOT |
pascal@12557 | 163 [ -n "$DEBUG" ] && printf "Protocol %X $feature\n" $Version 1>&2 |
pascal@12557 | 164 |
pascal@12557 | 165 # Old kernels need bootsector patches to disable rescent features |
pascal@12557 | 166 while read minversion maxversion offset bytes rem; do |
pascal@12557 | 167 [ $Version -gt $(( 0x$maxversion )) ] && continue |
pascal@12557 | 168 [ $Version -lt $(( 0x$minversion )) ] && continue |
pascal@12557 | 169 patch $offset $bytes $bs "$rem" |
pascal@12557 | 170 done <<EOT |
pascal@12557 | 171 000 1FF 08D B8:00:01 force zImage (movw \$0x100, %ax) |
pascal@12557 | 172 000 1FF 0CB EB:0B skip initrd code |
pascal@12826 | 173 000 201 01E EB:1E:00:00:00:00 room for the cmdline magic |
pascal@12826 | 174 000 201 036 BE:00:00:E8:76:01:EB:0A:06:57:B1:06:F3:A5:EB:DE code in cmdline magic moved |
pascal@12557 | 175 000 1FF 039 90:90:90 no kernel version |
pascal@12557 | 176 000 201 04B 22:00 old cmdline ptr 1 |
pascal@12557 | 177 000 201 06D 22:00 old cmdline ptr 2 |
pascal@12557 | 178 000 203 1F6 00:00 syssize32 |
pascal@12826 | 179 200 FFF 210 FF type_of_loader=FF |
pascal@12557 | 180 201 FFF 224 00:9B heap_end_ptr |
pascal@12557 | 181 EOT |
pascal@12557 | 182 if [ $Version -lt 514 ]; then |
pascal@13660 | 183 version_string=$((0x200 + $(getlong 0x20E $bs 2) )) |
pascal@12557 | 184 store 16 0x0037 $version_string $bs version_string |
pascal@6715 | 185 fi |
pascal@12557 | 186 if [ $Version -ge 512 -a $(getlong 0x214 $bs) -ge $((0x100000)) ]; then |
pascal@12557 | 187 patch 211 81 $bs loadflags=can_use_heap+loadhigh |
pascal@12557 | 188 patch 09D 10 $bs LOADSEG=0x1000 |
pascal@12557 | 189 patch 0A0 00:01 $bs LOADSZ=0x10000 |
pascal@6713 | 190 fi |
pascal@12557 | 191 [ -n "$CMDLINE" ] || patch 04D EB $bs "No cmdline" |
pascal@12557 | 192 [ -n "$NOEDIT" ] && patch 059 0D:46:EB:14 $bs 'mov CR,%al ; inc %si; jmp putal' |
pascal@12557 | 193 [ 1$TRACKS -ne 180 ] && store 8 0x171 $TRACKS $bs TRACKS |
pascal@12557 | 194 |
pascal@12557 | 195 [ -n "$FLAGS" ] && store 16 $FlagsOfs $FLAGS $bs FLAGS |
pascal@12557 | 196 [ -n "$VIDEO" ] && store 16 $VideoModeOfs $VIDEO $bs VIDEO |
pascal@12557 | 197 [ -n "$RDEV" ] || case "$FORMAT" in |
pascal@12557 | 198 1200) RDEV=0x0208 ;; |
pascal@12557 | 199 1440) RDEV=0x021C ;; |
pascal@12557 | 200 2880) RDEV=0x0220 ;; |
pascal@12557 | 201 *) RDEV=0x0200 ;; |
pascal@12557 | 202 esac |
pascal@12557 | 203 while [ -L "$RDEV" ]; do RDEV="$(readlink "$RDEV")"; done |
pascal@12557 | 204 [ -b "$RDEV" ] && RDEV=$(stat -c '0x%02t%02T' $RDEV 2> /dev/null) |
pascal@12557 | 205 store 16 $RootDevOfs $RDEV $bs RDEV |
pascal@13175 | 206 |
pascal@13175 | 207 [ $FORMAT -lt 1440 ] && store 8 0xEF 16 $bs 1.2M |
pascal@13175 | 208 [ $FORMAT -lt 1200 ] && store 8 0xEF 10 $bs 720K |
pascal@13175 | 209 [ $FORMAT -lt 720 ] && store 8 0x171 40 $bs 360K |
pascal@13175 | 210 [ $FORMAT -lt 360 ] && store 8 0xEF 9 $bs 320K |
pascal@13175 | 211 [ $FORMAT -lt 320 ] && store 8 0xF8 2 $bs 160K |
pascal@12557 | 212 |
pascal@12826 | 213 # Info text after setup |
pascal@12826 | 214 if [ -s "$INFOFILE" ]; then |
pascal@12826 | 215 patch 048 9a:00:00:00:90 $bs lcall displayinfo |
pascal@12826 | 216 uudecode >$bs.infotext <<EOT |
pascal@12826 | 217 begin-base64 644 - |
pascal@12826 | 218 MdsGYI7D6AAAXoHGSgCJ8MHoCUii8QGwDbQOuwcAzRCsPAx1I79sBLFbJgIN |
pascal@12826 | 219 uBsBJjoNdAnNFnT0mM0Wjsc8IHPjPBt0BuvPCMB1zWEHCx4oAss= |
pascal@12826 | 220 ==== |
pascal@12826 | 221 EOT |
pascal@12826 | 222 cat "$INFOFILE" >>$bs.infotext |
pascal@12826 | 223 if [ $Version -lt 514 ]; then |
pascal@12826 | 224 store 16 0x050 0x0022 $bs.infotext |
pascal@12826 | 225 fi |
pascal@12826 | 226 ddq if=/dev/zero bs=512 count=1 >>$bs.infotext |
pascal@12826 | 227 n=$(($(stat -c %s $bs.infotext)/512)) |
pascal@12826 | 228 ddq if=$bs.infotext count=$n bs=512 >> $bs |
pascal@12826 | 229 rm -f $bs.infotext |
pascal@12826 | 230 store 8 0x1F1 $(($setupsz+$n)) $bs update setup size |
pascal@12826 | 231 store 8 0x04A $((2+2*$setupsz)) $bs update displayinfo call |
pascal@12826 | 232 fi |
pascal@12826 | 233 |
pascal@13161 | 234 # Store cmdline after setup for kernels >= 0.99 |
pascal@12557 | 235 if [ -n "$CMDLINE" ]; then |
pascal@12557 | 236 echo -n "$CMDLINE" | ddq bs=512 count=1 conv=sync >> $bs |
pascal@12557 | 237 CmdlineOfs=0x9E00 # Should be in 0x8000 .. 0xA000 |
pascal@12557 | 238 ArgPtrOfs=0x228 |
pascal@12557 | 239 ArgPtrVal=$(( $SetupBase + $CmdlineOfs )) |
pascal@12557 | 240 if [ $Version -lt 514 ]; then |
pascal@12557 | 241 ArgPtrOfs=0x0020 |
pascal@12557 | 242 ArgPtrVal=$(( 0xA33F + ($CmdlineOfs << 16) )) |
pascal@12557 | 243 fi |
pascal@12557 | 244 store 32 $ArgPtrOfs $ArgPtrVal $bs "Cmdline '$CMDLINE'" |
pascal@6713 | 245 fi |
pascal@6713 | 246 |
pascal@12557 | 247 # Compute initramfs size (protocol >= 2.00) |
pascal@12557 | 248 [ $Version -lt 512 ] && INITRD="" |
pascal@4504 | 249 initrdlen=0 |
pascal@12557 | 250 INITRDPAD=4 |
pascal@12557 | 251 INITRDALIGN=0x1000 |
pascal@4504 | 252 for i in $( echo $INITRD | sed 's/,/ /' ); do |
pascal@4504 | 253 [ -s "$i" ] || continue |
pascal@12557 | 254 while [ -L "$i" ]; do i="$(readlink $i)"; done |
pascal@12557 | 255 size=$(( ($(stat -c %s "$i") + $INITRDPAD - 1) & -$INITRDPAD )) |
pascal@12557 | 256 [ -n "$DEBUG" ] && echo "initrd $i $size " 1>&2 |
pascal@12557 | 257 initrdlen=$(( $initrdlen + $size )) |
pascal@16962 | 258 ADRSRD=$(( (($MEM * 0x100000) - $initrdlen) & -$INITRDALIGN )) |
pascal@12557 | 259 store 32 $RamfsAdrOfs $(( $ADRSRD )) $bs initrd adrs |
pascal@12557 | 260 store 32 $RamfsLenOfs $initrdlen $bs initrdlen |
pascal@4504 | 261 done |
pascal@12557 | 262 |
pascal@12557 | 263 [ -n "$NOSYSSIZEFIX" ] || store 32 0x1F4 \ |
pascal@12557 | 264 $(( ($(stat -c %s $KERNEL)+15)/16 - ($setupsz+1)*32)) $bs fix system size |
pascal@4504 | 265 |
pascal@4504 | 266 # Output boot sector + setup + cmdline |
pascal@11175 | 267 ddq if=$bs |
pascal@4504 | 268 |
pascal@4504 | 269 # Output kernel code |
pascal@12557 | 270 syssz=$(( ($(getlong 0x1F4 $bs)+31)/32 )) |
pascal@12826 | 271 cat $KERNEL /dev/zero | ddq bs=512 skip=$(( $setupsz+1 )) count=$syssz conv=sync |
pascal@4504 | 272 |
pascal@4504 | 273 # Output initramfs |
pascal@4504 | 274 for i in $( echo $INITRD | sed 's/,/ /' ); do |
pascal@4504 | 275 [ -s "$i" ] || continue |
pascal@11175 | 276 ddq if=$i |
pascal@12557 | 277 padding=$(( $INITRDPAD - ($(stat -c %s $i) % $INITRDPAD) )) |
pascal@12557 | 278 [ $padding -eq $INITRDPAD ] || ddq if=/dev/zero bs=1 count=$padding |
pascal@4504 | 279 done |
pascal@4504 | 280 |
pascal@4504 | 281 # Cleanup |
pascal@4504 | 282 rm -f $bs |
pascal@4504 | 283 } |
pascal@4504 | 284 |
pascal@6715 | 285 if [ "$FORMAT" == "0" ]; then # unsplitted |
pascal@6715 | 286 floppyset > $PREFIX |
pascal@12557 | 287 PAD=$(( 512 - ($(stat -c %s $PREFIX) % 512) )) |
pascal@12557 | 288 [ $PAD -ne 512 ] && ddq if=/dev/zero bs=1 count=$PAD >> $PREFIX |
pascal@6715 | 289 exit |
pascal@6715 | 290 fi |
pascal@4504 | 291 floppyset | split -b ${FORMAT}k /dev/stdin floppy$$ |
pascal@4504 | 292 i=1 |
pascal@12557 | 293 ls floppy$$* 2> /dev/null | while read file ; do |
pascal@6713 | 294 output=$PREFIX$(printf "%03d" $i) |
pascal@11175 | 295 cat $file /dev/zero | ddq bs=1k count=$FORMAT conv=sync of=$output |
pascal@4504 | 296 echo $output |
pascal@4504 | 297 rm -f $file |
pascal@4504 | 298 i=$(( $i + 1 )) |
pascal@4504 | 299 done |