Hello,
For those of you who would like to try booting from JFFS2:
ftp://ftp.wearablegroup.org/pub/software/patches/
bootldr-snapshot-18-mar-2001.patch.gz
Support is included for the compression types currently used by JFFS2.
Note that this patch fixes some bugs in bootldr which were preventing
the icache/dcache/write buffer from being enabled; the params
"dcache_enabled" and "icache_enabled" should now work, although I'd
recommend leaving them at their defaults. JFFS replay should be much
faster as a result. There is still a bug associated with shutting off
the caches before diving into the kernel, so for the time being, the
caches are still enabled at the time of the jump. (This hasn't caused
objectionable behavior in my tests.)
Note also that JFFS2 does something worth examining further when it
comes to already-compressed files (such as zImage). There's a note in
the patch about how to fix DYNRUBIN compression in the kernel/mkfs.jffs2
so that zImage replays much, much faster.
Have fun,
-jd
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