mkfs.jffs2命令

Linux使用mkfs.jffs2命令需要安装mtd-utils工具

root@ubuntu:~# apt-get install mtd-utils

root@ubuntu:~# mkfs.jffs2 --help

mkfs.jffs2: error!: Usage: mkfs.jffs2 [OPTIONS]

Make a JFFS2 file system image from an existing directory tree

Options:

  -p, --pad[=SIZE]        Pad output to SIZE bytes with 0xFF. If SIZE is

                          not specified, the output is padded to the end of

                          the final erase block

  -r, -d, --root=DIR      Build file system from directory DIR (default: cwd)

  -s, --pagesize=SIZE     Use page size (max data node size) SIZE.

                          Set according to target system's memory management

                          page size (default: 4KiB)

  -e, --eraseblock=SIZE   Use erase block size SIZE (default: 64KiB)

  -c, --cleanmarker=SIZE  Size of cleanmarker (default 12)

  -m, --compr-mode=MODE   Select compression mode (default: priortiry)

  -x, --disable-compressor=COMPRESSOR_NAME

                          Disable a compressor

  -X, --enable-compressor=COMPRESSOR_NAME

                          Enable a compressor

  -y, --compressor-priority=PRIORITY:COMPRESSOR_NAME

                          Set the priority of a compressor

  -L, --list-compressors  Show the list of the avaiable compressors

  -t, --test-compression  Call decompress and compare with the original (for test)

  -n, --no-cleanmarkers   Don't add a cleanmarker to every eraseblock

  -o, --output=FILE       Output to FILE (default: stdout)

  -l, --little-endian     Create a little-endian filesystem

  -b, --big-endian        Create a big-endian filesystem

  -D, --devtable=FILE     Use the named FILE as a device table file

  -f, --faketime          Change all file times to '0' for regression testing

  -q, --squash            Squash permissions and owners making all files be owned by root

  -U, --squash-uids       Squash owners making all files be owned by root

  -P, --squash-perms      Squash permissions on all files

      --with-xattr        stuff all xattr entries into image

      --with-selinux      stuff only SELinux Labels into jffs2 image

      --with-posix-acl    stuff only POSIX ACL entries into jffs2 image

  -h, --help              Display this help text

  -v, --verbose           Verbose operation

  -V, --version           Display version information

  -i, --incremental=FILE  Parse FILE and generate appendage output for it

jffs2文件制作命令：

mkfs.jffs2 -d  ./firmware/HI3518E_OV9732/ -e 0x10000 -p 0xA00000 -o ./output/application_HI3518E_OV9732.jffs2

linux系统下命令重写第四分区：

dd if=application_HI3518E_OV9732.jffs2 of=/dev/mtdblock3

uboot下通过tftp单独重烧第四分区：

mw.b 0x82000000 ff 1000000;tftp 0x82000000 application_3518c_imx238_ex.jffs2;sf probe 0;sf erase 0x600000 0xA00000;sf write 0x82000000 0x600000 0xA00000;