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gemini: use tar stream to write firmware

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The firmware update file can get big, so instead of extracting
the whole file into the tmp folder potentially running out of space
and make the upgrade fail, stream from tar xvf -O directly to the
mtd write command.

Refactor the checking of partitions and the actual upgrade into
two steps when we are at it.

Link: https://github.com/openwrt/openwrt/pull/21782
(cherry picked from commit 1977301b5f)
Link: https://github.com/openwrt/openwrt/pull/21973
Signed-off-by: Linus Walleij <linusw@kernel.org>
This commit is contained in:
Linus Walleij 2026-01-29 23:40:50 +01:00
parent 43547e9314
commit 40b5a83fdb
1 changed files with 17 additions and 11 deletions
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28
target/linux/gemini/base-files/lib/upgrade/platform.sh
View file

@ -1,7 +1,7 @@
REQUIRE_IMAGE_METADATA=1
MTDSYSFS=/sys/class/mtd
gemini_do_platform_upgrade() {
gemini_check_redboot_parts() {
MTD1OF=`cat ${MTDSYSFS}/mtd1/offset`
MTD2OF=`cat ${MTDSYSFS}/mtd2/offset`
MTD3OF=`cat ${MTDSYSFS}/mtd3/offset`
@ -54,19 +54,23 @@ gemini_do_platform_upgrade() {
echo "MTD3 has wrong name, aborting" >&2
exit 1
fi
}
gemini_do_platform_upgrade() {
echo "Extract the three firmware parts"
tar xvfz "$1"; rm "$1"
sync
echo 3 > /proc/sys/vm/drop_caches
echo "COMMENCING UPGRADE. BE PATIENT, THIS IS NOT FAST!"
echo "Upgrade Kern partition (kernel part 1, $2 erase blocks)"
mtd write zImage Kern
KFSZ=$(tar xfz "$1" zImage -O | wc -c)
echo "Upgrade Kern partition (kernel part 1, size ${KFSZ})"
tar xfz "$1" zImage -O | mtd write - Kern
[ $? -ne 0 ] && exit 1
echo "Upgrade Ramdisk partition (kernel part 2, $3 erase blocks)"
mtd write rd.gz Ramdisk
RFSZ=$(tar xfz "$1" rd.gz -O | wc -c)
echo "Upgrade Ramdisk partition (kernel part 2, size ${RFSZ})"
tar xfz "$1" rd.gz -O | mtd write - Ramdisk
[ $? -ne 0 ] && exit 1
echo "Upgrade Application partition (rootfs, $4 erase blocks)"
mtd write hddapp.tgz Application
AFSZ=$(tar xfz "$1" hddapp.tgz -O | wc -c)
echo "Upgrade Application partition (rootfs, size ${AFSZ})"
tar xfz "$1" hddapp.tgz -O | mtd write - Application
[ $? -ne 0 ] && exit 1
}
@ -98,10 +102,12 @@ platform_do_upgrade() {
;;
itian,sq201|\
storlink,gemini324)
gemini_do_platform_upgrade "$1" 16 48 48
gemini_check_redboot_parts "$1" 16 48 48
gemini_do_platform_upgrade "$1"
;;
raidsonic,ib-4220-b)
gemini_do_platform_upgrade "$1" 24 48 48
gemini_check_redboot_parts "$1" 24 48 48
gemini_do_platform_upgrade "$1"
;;
esac
}