Re: [9fans] 9pccpu: can't open /dev/sdXX/nvram

[arisawa <arisawa@ar.aichi-u.ac.jp>]

Hello,

I retried cpu kernel with only usb flash drive.
this time I have finally succeeded in automatic start service.

the kernel is based on 9front.
MB is GA-G31M-S2L.
the MB is old model and very slow in polling usb even if I set
	*acpi=1
in plan9.ini.
my nvram setting is
	nvram=/dev/sdU6.0/nvram
and we must find the value 6.0 by experiment:
first, without nobootprompt and then
	nobootprompt=tcp

I have not good result for bell-labs version.

thanks all.

On 2013/05/14, at 8:06, erik quanstrom <quanstro@quanstro.net> wrote:

> On Mon May 13 17:33:12 EDT 2013, arisawa@ar.aichi-u.ac.jp wrote:
>> Hello,
>> 
>> not yet with usb.
>> my current solution is "sdcard with sata adapter" only for NVRAM.
>> I will be happy if someone have a solution that uses usb flash drive only.
> 
> it looks to me that the problem is the fact that intrenable() doesn't
> find the interrupts for usb.  polling might be slow enough to trip
> up the arbitrary delays in the boot process.
> 
> that is, it looks like the mp table is incorrect.
> 
> have you tried a kernel with more support for acpi?  i believe you
> may be able to try on recent 9atom kernels, (http://ftp.9atom.org/other/9paecpu)
> with the following two addition to your .ini file
> 	*acpi=1
> 
> this is really cinap's work.  i only suggest 9atom as it may be easier
> to test in your environment.
> 
> good luck.
> 
> - erik
>