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Altera_Forum
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20 years ago

jffs2 on custom board

Hello,

I am trying to port uClinux on my custom board, a lot of things seem to be ok, but I still have 2 problems (at least:-) ) :

- When I used uClinux on the Altera Cyclone devboard, I had a lot of messages on the console before the login prompt (info from kernel, drivers, ...). On my custom board, it seems to be skipped, I directly get the prompt. Actually, it is not a big problem, but I don't understand why it is so (I use the JTAG uart on the devboard, and on my custom board too).

- More important : when I try to mount my CFI-compliant flash, it seems ok (it appears as mounted in /proc/mounts), but as soon as I try to access it (an 'ls' in the mounted directory, or any write access), I get a SIGSEGV, and the system never responds anything else than SIGSEGV to any command I enter. The flash I use is an S29GL256M that is correctly recognized by the flash-programmer. I have modified the mapping file to use the MTD driver, and I have created entry in the /dev dir, with the correct minor/major (I actually did exactly what I did to have a JFFS2 filesystem running ok on the Altera devboard...).

Does anybody have more info about this ?

Thanks a lot.

pod
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