From 16aecc12c23235a38e7e09d45b2ceea6fd54a147 Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Fri, 30 Jun 2023 11:52:37 +0200 Subject: mediatek: filogic: wax220: support factory image Enable building a factory image which can be flashed through the OEM firmware's web interface. It seems that the web interface requires a minimum file size of 10MiB, otherwise it will not accept the image. The update image is a regular sysupgrade tarball packed in a Netgear encrypted image. The Netgear encrypted image is the same as used in WAX202 or WAX206, including the encryption keys and IV. This adds a script which creates the rootfs_data volume on first startup. This is required since the OEM firmware's sysupgrade scripts do not create such a paritition. Note that any script ordered after 70_initramfs_test will not get executed on initramfs. Hence this new script 75_rootfs_prepare won't create the rootfs_data volume when using the recovery initramfs. Also, this deletes the kernel_backup and rootfs_backup volumes in case we have to create the rootfs_data volumes. This makes sure that OpenWrt is the actual backup firmware instead of the stock firmware. References in WAX220 GPL source: https://www.downloads.netgear.com/files/GPL/WAX220-V1.0.2.8-gpl-src.tar.gz * package/base-files/files/lib/upgrade/nand.sh:186 Creation of rootfs_data is disabled * Uboot-upstream/board/mediatek/common/ubi_helper.c Automatic creation of UBI backup volumes Signed-off-by: Stefan Agner (cherry picked from commit fa9d977f979461628161085dcd0e9dd8b9e2c66b) --- .../base-files/lib/preinit/75_rootfs_prepare | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 target/linux/mediatek/filogic/base-files/lib/preinit/75_rootfs_prepare (limited to 'target/linux/mediatek/filogic') diff --git a/target/linux/mediatek/filogic/base-files/lib/preinit/75_rootfs_prepare b/target/linux/mediatek/filogic/base-files/lib/preinit/75_rootfs_prepare new file mode 100644 index 0000000000..0a32073e0b --- /dev/null +++ b/target/linux/mediatek/filogic/base-files/lib/preinit/75_rootfs_prepare @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause + +rootfs_create() { + local blocks + + blocks=$(cat /sys/class/ubi/ubi0/avail_eraseblocks) + [ -z "$blocks" ] && { + echo "Failed to read amount of available erase blocks" >&2 + return + } + + # Delete after getting available blocks: Make sure enough space is + # left to recreate these volumes. + ubirmvol /dev/ubi0 -N kernel_backup + ubirmvol /dev/ubi0 -N rootfs_backup + + # Use 90% of remaining flash size for "rootfs_data" + ubimkvol /dev/ubi0 -n 20 -N rootfs_data --lebs $((blocks / 100 * 90)) + mknod -m 0600 /dev/ubi0_20 c 250 21 +} + +rootfs_prepare() { + case $(board_name) in + netgear,wax220) + if ! ubinfo /dev/ubi0 -N rootfs_data &>/dev/null; then + echo "Creating \"rootfs_data\" UBI volume" + rootfs_create + fi + ;; + *) + ;; + esac +} + +boot_hook_add preinit_main rootfs_prepare -- cgit v1.2.3