Hi,

Peter Korsgaard wrote:
Hi,

 Peter> I now have a new and rather bizarre problem, which maybe you
 Peter> or someone else has met before.  I have a simple FPGA design
 Peter> with memory, a sysace and a uart16550 on an ML405 (I've put my
 Peter> hardware to one side for the moment).  It works just fine.  If
 Peter> I swap the uart16550 for a uartlite (remaking the kernel with
 Peter> the correct device tree) I see all the boot messages and the
 Peter> kernel seems to start OK, the root partition is mounted but
 Peter> then I see nothing from /sbin/init.  This is the same root fs
 Peter> that I was using with the uart16550 example I just mentioned.

Did you remember to change your inittab to use /dev/ttyUL0?
Yes, I'm using a buildroot/busybox system and have changed inittab and securetty for ttyUL0. From what I understand, initialisation lines in a busybox inittab that do not specify a tty at the beginning go out on /dev/console. To collaborate this, if I set my hardware up for a uart16550 and leave the inittab specifying ttyUL0, I see the messages from the init scripts (which must be going to console) but then I messages (again on console I guess) saying that ttyUL0 doesn't exist. When I try things the other way round, I don't see anything at all (none of the stuff that I think is going to console) and it doesn't moan at me. Which I guess means something is wrong with /dev/console?

-- Peter

The University of Dundee is a Scottish Registered Charity, No. SC015096.


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