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b3770eaca3
Consistently handle boot-count reset and upgrade across ipq40xx, ipq806x, kirkwood, mvebu Dual-firmware devices often utilize a specific MTD partition to record the number of times the boot loader has initiated boot. Most of these devices are NAND, typically with a 2k erase size. When this code was ported to the ipq40xx platform, the device in hand used NOR for this partition, with a 16-byte "record" size. As the implementation of `mtd resetbc` is by-platform, the hard-coded nature of this change prevented proper operation of a NAND-based device. * Unified the "NOR" variant with the rest of the Linksys variants * Added logging to indicate success and failure * Provided a meaningful return value for scripting * "Protected" the use of `mtd resetbc` in start-up scripts so that failure does not end the boot sequence * Moved Linksys-specific actions into common `/etc/init.d/bootcount` For upgrade, these devices need to determine which partition to flash, as well as set certain U-Boot envirnment variables to change the next boot to the newly flashed version. * Moved upgrade-related environment changes out of bootcount * Combined multiple flashes of environment into single one * Current-partition detection now handles absence of `boot_part` Runtime-tested: Linksys EA8300 Signed-off-by: Jeff Kletsky <git-commits@allycomm.com> Signed-off-by: Christian Lamparter <chunkeey@gmail.com> [checkpatch.pl fixes, traded split strings for 80+ chars per line]
121 lines
2.9 KiB
Bash
Executable File
121 lines
2.9 KiB
Bash
Executable File
linksys_get_target_firmware() {
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local cur_boot_part mtd_ubi0
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cur_boot_part=$(/usr/sbin/fw_printenv -n boot_part)
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if [ -z "${cur_boot_part}" ] ; then
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mtd_ubi0=$(cat /sys/devices/virtual/ubi/ubi0/mtd_num)
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case $(egrep "^mtd${mtd_ubi0}:" /proc/mtd | cut -d '"' -f 2) in
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kernel|rootfs)
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cur_boot_part=1
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;;
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alt_kernel|alt_rootfs)
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cur_boot_part=2
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;;
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esac
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>&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \
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"${cur_boot_part}" "${mtd_ubi0}"
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fi
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# OEM U-Boot for EA6350v3 and EA8300; bootcmd=
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# if test $auto_recovery = no;
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# then bootipq;
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# elif test $boot_part = 1;
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# then run bootpart1;
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# else run bootpart2;
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# fi
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case $cur_boot_part in
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1)
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fw_setenv -s - <<-EOF
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boot_part 2
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auto_recovery yes
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EOF
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printf "alt_kernel"
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return
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;;
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2)
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fw_setenv -s - <<-EOF
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boot_part 1
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auto_recovery yes
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EOF
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printf "kernel"
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return
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;;
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*)
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return
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;;
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esac
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}
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linksys_get_root_magic() {
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(get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
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}
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platform_do_upgrade_linksys() {
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local magic_long="$(get_magic_long "$1")"
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mkdir -p /var/lock
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local part_label="$(linksys_get_target_firmware)"
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touch /var/lock/fw_printenv.lock
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if [ ! -n "$part_label" ]; then
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echo "cannot find target partition"
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exit 1
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fi
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local target_mtd=$(find_mtd_part $part_label)
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[ "$magic_long" = "73797375" ] && {
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CI_KERNPART="$part_label"
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if [ "$part_label" = "kernel" ]; then
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CI_UBIPART="rootfs"
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else
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CI_UBIPART="alt_rootfs"
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fi
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# remove "squashfs" vol (in case we are flashing over a stock image, which is also UBI)
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local mtdnum="$( find_mtd_index "$CI_UBIPART" )"
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if [ ! "$mtdnum" ]; then
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echo "cannot find ubi mtd partition $CI_UBIPART"
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return 1
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fi
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local ubidev="$( nand_find_ubi "$CI_UBIPART" )"
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if [ ! "$ubidev" ]; then
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ubiattach -m "$mtdnum"
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sync
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ubidev="$( nand_find_ubi "$CI_UBIPART" )"
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fi
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if [ "$ubidev" ]; then
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local squash_ubivol="$( nand_find_volume $ubidev squashfs )"
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# kill volume
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[ "$squash_ubivol" ] && ubirmvol /dev/$ubidev -N squashfs || true
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fi
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# complete std upgrade
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nand_upgrade_tar "$1"
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}
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[ "$magic_long" = "27051956" ] && {
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# This magic is for a uImage (which is a sysupgrade image)
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# check firmwares' rootfs types
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local oldroot="$(linksys_get_root_magic $target_mtd)"
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local newroot="$(linksys_get_root_magic "$1")"
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if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]; then
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# we're upgrading from a firmware with UBI to one with UBI
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# erase everything to be safe
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# - Is that really needed? Won't remove (or comment) the if, because it may be needed in a future device.
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#mtd erase $part_label
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#get_image "$1" | mtd -n write - $part_label
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echo "writing \"$1\" UBI image to \"$part_label\" (UBI)..."
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get_image "$1" | mtd write - $part_label
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else
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echo "writing \"$1\" image to \"$part_label\""
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get_image "$1" | mtd write - $part_label
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fi
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}
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}
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