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bcm27xx: improve image generation script

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- Exit immediately on a non-zero status.
- Remove empty lines.
- Remove unused variables.
- Add missing ptgen variables for readability.
- Refactor SYNTAX if block.

(cherry picked from commit 96b03ff2476edb4d08fb4b91fdf80be7aa95ddd8)
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas 2024-01-30 20:12:25 +01:00
parent c82ca6dc74
commit 9a869950c1
1 changed files with 8 additions and 9 deletions
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17
target/linux/bcm27xx/image/gen_rpi_sdcard_img.sh
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@ -1,10 +1,11 @@
#!/bin/sh #!/bin/sh
set -x set -e -x
[ $# -eq 5 ] || {
if [ $# -ne 5 ]; then
echo "SYNTAX: $0 <file> <bootfs image> <rootfs image> <bootfs size> <rootfs size>" echo "SYNTAX: $0 <file> <bootfs image> <rootfs image> <bootfs size> <rootfs size>"
exit 1 exit 1
} fi
OUTPUT="$1" OUTPUT="$1"
BOOTFS="$2" BOOTFS="$2"
@ -12,18 +13,16 @@ ROOTFS="$3"
BOOTFSSIZE="$4" BOOTFSSIZE="$4"
ROOTFSSIZE="$5" ROOTFSSIZE="$5"
align=4096
head=4 head=4
kernel_type=c
rootfs_type=83
sect=63 sect=63
set $(ptgen -o $OUTPUT -h $head -s $sect -l 4096 -t c -p ${BOOTFSSIZE}M -t 83 -p ${ROOTFSSIZE}M) set $(ptgen -o $OUTPUT -h $head -s $sect -l $align -t $kernel_type -p ${BOOTFSSIZE}M -t $rootfs_type -p ${ROOTFSSIZE}M)
BOOTOFFSET="$(($1 / 512))" BOOTOFFSET="$(($1 / 512))"
BOOTSIZE="$(($2 / 512))"
ROOTFSOFFSET="$(($3 / 512))" ROOTFSOFFSET="$(($3 / 512))"
ROOTFSSIZE="$(($4 / 512))"
dd bs=512 if="$BOOTFS" of="$OUTPUT" seek="$BOOTOFFSET" conv=notrunc dd bs=512 if="$BOOTFS" of="$OUTPUT" seek="$BOOTOFFSET" conv=notrunc
dd bs=512 if="$ROOTFS" of="$OUTPUT" seek="$ROOTFSOFFSET" conv=notrunc dd bs=512 if="$ROOTFS" of="$OUTPUT" seek="$ROOTFSOFFSET" conv=notrunc