Qi for S3C2410

Andy Green andy at openmoko.com
Tue Nov 11 18:31:58 CET 2008

Hash: SHA1

Somebody in the thread at some point said:
| Andy Green wrote:
|> it would be best if it only appended to
|> the hardcoded one.
| That would certainly cover most usage cases. I even had to look
| up what I called the option for replacing the parameter line (as
| opposed to appending to it) in LILO :-)
| The only option we regularly use that cannot be overridden by
| a later option would be "console=". The command line limit of
| 1024 bytes is hopefully nothing anyone will ever hit.

console= is additive though, additional console= just make more
consoles.  Append method only blocks actual deletion of default console
then.  It's so specialized it doesn't seem a problem.

If the idea of console=[tty0] is to turn syslog traffic on and off for
the LCM then it's really a similar issue to loglevel=, both are
something you might want only if you are having trouble booting, and
both are themselves canned actions.  Maybe there's a more adaptive
Windows 95 style solution possible where the device-specific code can
mark something like PMU spare register bit in Qi and clear it in
userspace... if we see the bit set next time in Qi we append these
troubleshooting options ourselves in Qi.

- -Andy
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