mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 14:13:16 +00:00
aed4799d6d
This patch adds support for squashfs as the root filesystem.
advantages:
- migrate from a existing -ext4 installation and back
with the sysupgrade utility
- existing partition layout will not be lost during switch
- slightly smaller image size as compared to the -ext4 image.
disadvantages:
- needs f2fs + tools. This is because fstools rootdisk.c decides based
on the partition size (currently root partitions > 100 MiB) f2fs is
used as the rootfs_data filesystem.
- rootfs_data is placed into the rootfs partition after the squashfs.
This makes it difficult for tools that expect a /dev/sda${X} device.
It also makes it difficult for data recovery tools as they might not
expect to find a embedded partition or will be slightly confused.
... or will not support f2fs.
For people with existing build configurations: make sure to include mkf2fs
and f2fsck packages into the image. Otherwise the new -squashfs image will
only boot from the ram-overlay.
Note:
All overlay data (configurations/all installed packages/...) will be
placed in inside the rootfs partition (i.e. /dev/sda2) just after the
squashfs image.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
7 lines
561 B
Plaintext
7 lines
561 B
Plaintext
setenv boot_args 'setenv bootargs root=/dev/sda2 rw rootfstype=squashfs,ext4'
|
|
setenv load_part1 'sata init; ext2load sata 1:1 ${kernel_addr_r} /boot/uImage; ext2load sata 1:1 ${fdt_addr_r} /boot/apollo3g.dtb'
|
|
setenv load_part2 'sata init; ext2load sata 0:1 ${kernel_addr_r} /boot/uImage; ext2load sata 0:1 ${fdt_addr_r} /boot/apollo3g.dtb'
|
|
setenv load_sata 'if run load_part1; then echo Loaded part 1; elif run load_part2; then echo Loaded part 2; fi'
|
|
setenv boot_sata 'run load_sata; run boot_args addtty; bootm ${kernel_addr_r} - ${fdt_addr_r}'
|
|
run boot_sata
|