diff options
Diffstat (limited to 'target/linux/bcm4908/base-files/lib/preinit/75_rootfs_prepare')
| -rw-r--r-- | target/linux/bcm4908/base-files/lib/preinit/75_rootfs_prepare | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/bcm4908/base-files/lib/preinit/75_rootfs_prepare b/target/linux/bcm4908/base-files/lib/preinit/75_rootfs_prepare new file mode 100644 index 0000000000..07fa21814e --- /dev/null +++ b/target/linux/bcm4908/base-files/lib/preinit/75_rootfs_prepare @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause + +. /lib/functions/bcm4908.sh + +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 + } + + # Use 80% of remaining flash size for "rootfs_data" + ubimkvol /dev/ubi0 -n 20 -N rootfs_data --lebs $((blocks / 100 * 80)) + mknod -m 0600 /dev/ubi0_20 c 252 21 + + bcm4908_verify_rootfs_data ubi0_20 +} + +rootfs_prepare() { + # Do nothing on CFE devices + ubinfo /dev/ubi0 -N metadata1 > /dev/null 2>&1 || exit 0 + + # Find UBI volume device (e.g. ubi0_123) + local ubivol="$(grep rootfs_data /sys/devices/virtual/ubi/ubi*/ubi*/name | sed -n 's/.*\(ubi\d*_\d*\).*/\1/p')" + if [ -n "$ubivol" ]; then + bcm4908_verify_rootfs_data $ubivol + else + echo "Creating \"rootfs_data\" UBI volume" + rootfs_create + fi +} + +boot_hook_add preinit_main rootfs_prepare |