State of read-only filesystems in NAND / MTD bad blocks handling when reading

[Ricard Wanderlof]

On Wed, 2 May 2012, Thilo Fromm wrote:

> Apart from the fact that my NAND SW stack will then be two layers
> higher than it actually needs to be (and the added complexity this
> brings to boot loader and kernel) -  as far as I know UBI does not
> provide the functionality we require: being able to store a read-only
> file system image, and mount it at boot time. At least we don't get
> this without another boot step (initrd, see above).

With a root file system in ubifs, you can boot directly with a root 
filesystem in UBI, with a kernel command line such as

ubi.mtd=2 root=ubi0:rootfs rootfstype=ubifs

I don't know how far back that was possible, you were using 2.6.27 were 
you not (in my case I'm using 2.6.35)?

/Ricard
-- 
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
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