Mounting the squashfs/read-only Linux file system on MTD partition

[Vesta <laguna-mc@xxxxxxxx>]

Hi,

Device have embedded Linux version 2.6.26.5, at boot time the system creates 11 MTD partitions on NAND flash.
I'm in limited Busybox shell.
BusyBox v1.10.2 (2017-08-02 14:07:25 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.

/bin/sh: can't access tty; job control turned off
# mount -t proc proc /proc
# mount -t sysfs sysfs /sys
# mount -t tmpfs tmpfs /tmp
# mount -t tmpfs none /dev
# mkdir /dev/pts
# mount -t devpts devpts /dev/pts
# mdev -s
# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00060000 00004000 "u-boot"
mtd1: 00020000 00004000 "u-bootenv"
mtd2: 013e0000 00004000 "ROMIMAGE"
mtd3: 00700000 00004000 "HALFIMAGE"
mtd4: 01260000 00004000 "LINUX_ROOTFS"
mtd5: 00200000 00004000 "HS_FW"
mtd6: 00100000 00004000 "FPAR"
mtd7: 00080000 00004000 "CISCO"
mtd8: 00020000 00004000 "EEPROM"
mtd9: 00080000 00004000 "NVRAM"
mtd10: 00080000 00004000 "CA_DATA"
# mount
rootfs on / type rootfs (rw)
/dev/root on / type squashfs (ro)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
tmpfs on /tmp type tmpfs (rw)
none on /dev type tmpfs (rw)
devpts on /dev/pts type devpts (rw,mode=600)

# df -h
Filesystem                Size      Used Available Use% Mounted on
rootfs                    8.0M      8.0M         0 100% /
/dev/root                 8.0M      8.0M         0 100% /
tmpfs                    13.9M         0     13.9M   0% /tmp
none                     13.9M         0     13.9M   0% /dev

# ls -al
drwxr-xr-x   19 1005     1005          219 Aug  2  2017 .
drwxr-xr-x   19 1005     1005          219 Aug  2  2017 ..
drwxrwxr-x    6 1005     1005           86 Aug  2  2017 .svn
drwxrwxr-x    2 1005     1005          432 Aug  2  2017 bin
-rwxr-xr-x    1 1005     1005       715844 Aug  2  2017 cordless_nodect.coma
drwxrwxrwt    5 0        0            2720 Jan  1 00:04 dev
drwxr-xr-x    2 1005     1005            3 Aug  2  2017 eeprom
drwxr-xr-x    4 1005     1005          386 Aug  2  2017 etc
drwxr-xr-x    2 1005     1005            3 Aug  2  2017 fpar
drwxr-xr-x    4 0        0              48 Aug  2  2017 home
drwxr-xr-x    2 1005     1005            3 Aug  2  2017 hsfw
drwxr-xr-x    3 1005     1005          287 Aug  2  2017 lib
drwxrwxr-x    2 1005     1005            3 Aug  2  2017 mnt
drwxr-xr-x    2 1005     1005            3 Aug  2  2017 nvram
dr-xr-xr-x   27 0        0               0 Jan  1 00:00 proc
lrwxrwxrwx    1 1005     1005            8 Aug  2  2017 root -> tmp/root
drwxr-xr-x    2 1005     1005          642 Aug  2  2017 sbin
drwxr-xr-x   10 0        0               0 Jan  1 00:00 sys
drwxrwxrwt    2 0        0              40 Jan  1 00:00 tmp
drwxr-xr-x    7 1005     1005           73 Aug  2  2017 usr
lrwxrwxrwx    1 1005     1005            7 Aug  2  2017 var -> tmp/var
drwxr-xr-x    6 1005     1005         4051 Aug  2  2017 www

How to mount the Linux root file system on mtd4 (LINUX_ROOTFS)? It's squashfs/read-only filesystem. What is correct steps?
Does all the rest MTD partitions have JFFS2 file system?

Regards,

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