KumiSystems/openwrtv3
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

mvebu: use ptgen instead of fdisk to make the clearfog image script more portable

Browse source 
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2016-09-01 15:29:48 +02:00
parent 7130833a27
commit 2d7d9baf19
1 changed files with 17 additions and 55 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

72
target/linux/mvebu/image/gen_mvebu_sdcard_img.sh
View file

@ -31,62 +31,27 @@ fi
set -e
# parameters
IMGSIZE=$1
OUTFILE="$2"
BOOTLOADER="$3"
# calculate number of partitions from argument list
NUMPARTS=$#
((NUMPARTS=(NUMPARTS-3)/3))
# find required applications
FDISK=$(env PATH="/usr/local/sbin:/usr/sbin:/sbin:$PATH" which fdisk)
IMGSIZE=$1; shift
OUTFILE="$1"; shift
BOOTLOADER="$1"; shift
# generate image file
printf "Creating $OUTFILE from /dev/zero: "
dd if=/dev/zero of="$OUTFILE" bs=512 count=1 >/dev/null
printf "Done\n"
# generate fdisk argument list
printf "Generating fdisk argument list: "
ARGSFILE=$(mktemp)
# empty partition table
printf "o\n" >> $ARGSFILE
# actual partitions
offset=2048
for i in $(seq 1 1 $NUMPARTS); do
((n=3+3*i-2)); type=$(eval echo \${$n})
((n=3+3*i-1)); size=$(eval echo \${$n})
((end=offset+size-1))
printf "n\np\n%i\n\n%i\n" $i $end >> $ARGSFILE
# special case on first aprtition: fdisk wont ask which one
if [ $i -eq 1 ]; then
printf "t\n%s\n" $type >> $ARGSFILE
else
printf "t\n%i\n%s\n" $i $type >> $ARGSFILE
fi
# add this partitions size to offset for next partition
((offset=end+1))
while [ "$#" -ge 3 ]; do
ptgen_args="$ptgen_args -p $(($2 / 2)) -S 0x$1"
parts="$parts$3 "
shift; shift; shift
done
# write and exit
printf "w\n" >> $ARGSFILE
printf "Done\n"
head=16
sect=63
# create real partition table using fdisk
printf "Creating partition table: "
cat $ARGSFILE | $FDISK "$OUTFILE" >/dev/null
printf "Done\n"
# remove temporary files
printf "Cleaning up: "
rm -f $ARGSFILE
set `ptgen -o "$OUTFILE" -h $head -s $sect -l 1024 $ptgen_args`
printf "Done\n"
# install bootloader
@ -94,18 +59,15 @@ printf "Writing bootloader: "
dd of="$OUTFILE" if="$BOOTLOADER" bs=512 seek=1 conv=notrunc 2>/dev/null
printf "Done\n"
# write partition data
# offset of first partition is 2048
offset=2048
for i in $(seq 1 1 $NUMPARTS); do
((n=3+3*i-1)); size=$(eval echo \${$n})
((n=3+3*i)); img="$(eval echo \${$n})"
i=1
while [ "$#" -ge 2 ]; do
img="${parts%% *}"
parts="${parts#* }"
printf "Writing %s to partition %i: " "$img" $i
dd if="$img" of="$OUTFILE" bs=512 seek=$offset conv=notrunc 2>/dev/null
dd if="$img" of="$OUTFILE" bs=512 seek=$(($1 / 512)) conv=notrunc 2>/dev/null
printf "Done\n"
# add this partitions size to offset for next partition
((offset=offset+size))
let i=i+1
shift; shift
done