Jeremy Stanley wrote:
On 2013-01-17 19:44:41 +0000 (+0000), Mark Morgan Lloyd wrote:
[...]
So far I've not had any success with kernel options
[...]
It's been a few years since I did it on my Indy, but looks like you
can just add "append" lines to arc.cf:
http://www.linux-mips.org/wiki/ARCLoad#Usage
Wasn't that only relevant for ARCLoad rather than booting directly which
I think is supposed to work for that architecture
(http://www.linux-mips.org/wiki/IP27#ARC_firmware)? Perhaps that's
something I should be exploring though...
Could still possibly be unsuccessfully trying to use a tty0 virtual
terminal or something instead of ttyS0 by default. Also make sure
the kernel's using the same baud as the firmware--your issue might
just be a simple mismatch there (though random garbage after the
count would have been a more likely symptom of that).
I'm pretty sure it's not a Baud issue: I still do a lot of serial comms
and would have noticed that. It could /possibly/ be something like a
control line (CTS/DSR/CD) not being pulled active, but I'm working via a
null-modem which has worked well in the past on e.g. SPARC.
I think the prime contender at the moment is that it's trying to talk to
an non-existent framebuffer, which is disappointing (other architectures
are generally good at detecting this). If that's the case then I might
find something useful if I can find the config
(http://www.total-knowledge.com/progs/mips/kernels/, or referring to the
current Debian CD).
Or it could just be crashing, which would be really disappointing.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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