c06fb25d1f
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36 lines
901 B
Plaintext
36 lines
901 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
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. /lib/functions/bcm4908.sh
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rootfs_create() {
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local blocks
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blocks=$(cat /sys/class/ubi/ubi0/avail_eraseblocks)
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[ -z "$blocks" ] && {
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echo "Failed to read amount of available erase blocks" >&2
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return
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}
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# Use 80% of remaining flash size for "rootfs_data"
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ubimkvol /dev/ubi0 -n 20 -N rootfs_data --lebs $((blocks / 100 * 80))
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mknod -m 0600 /dev/ubi0_20 c 252 21
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bcm4908_verify_rootfs_data ubi0_20
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}
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rootfs_prepare() {
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# Do nothing on CFE devices
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ubinfo /dev/ubi0 -N metadata1 > /dev/null 2>&1 || return
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# Find UBI volume device (e.g. ubi0_123)
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local ubivol="$(grep rootfs_data /sys/class/ubi/ubi*/name | sed -n 's/.*\(ubi\d*_\d*\).*/\1/p')"
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if [ -n "$ubivol" ]; then
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bcm4908_verify_rootfs_data $ubivol
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else
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echo "Creating \"rootfs_data\" UBI volume"
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rootfs_create
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fi
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}
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boot_hook_add preinit_main rootfs_prepare
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