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sgi-o2 problem [solved]
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mattie01
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Joined: 30 Nov 2005
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PostPosted: Thu Jan 05, 2006 12:25 pm    Post subject: sgi-o2 problem [solved] Reply with quote

Ok I know this isn’t a specific gentoo problem so i'll apologise for that now, but i was running the mips gentoo guide and made what appears a rather silly mistake...

When in the prom i changed the setenv console to >> setenv console d1

Now when the o2 boots I get nothing shown on the monitor and the power light on the monitor just flashes like it isn’t getting a signal, I think this is because I changed the setenv above,

Now my question is, is there a way of setting the prom back to the defaults? Or is there a way of getting the output back so it displays on a monitor? I think I remember someone mentioning about using a serial converter cable to plug a monitor in? But I could be wrong?

and i'd also like to mention that i'm not blaming anyone else for this but myself but any ideas help or suggestions are much appreciated

Many thanks

mattm


Last edited by mattie01 on Mon Jan 16, 2006 10:27 am; edited 1 time in total
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Redhatter
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Joined: 20 Sep 2003
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Location: Brisbane, QLD, Australia

PostPosted: Thu Jan 05, 2006 12:45 pm    Post subject: Reply with quote

Grab a null modem cable, plug one end into Serial Port 1 (or 0... I've never seen the back of an O2 myself), and the other into the serial port of another box. Fire up a terminal emulator on the other box (HyperTerminal, minicom, seyon, screen...etc), and set it to use 9600 baud, 8-bits, no parity, one stop bit.

When you fire up the O2, you should see the PROM init via serial console. Hit ESC when prompted, then go into the console (option 5) and enter setenv console g to set it back to using the monitor. Finish by typing init, and you should see the monitor spring to life.
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Stuart Longland (a.k.a Redhatter, VK4MSL)
I haven't lost my mind - it's backed up on a tape somewhere...

Gentoo/MIPS Cobalt developer, Mozilla herd member.
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mattie01
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PostPosted: Mon Jan 16, 2006 10:27 am    Post subject: Reply with quote

many thanks it worked a treat :)

even got my other sgi box working, so i now have 2 just need a hdd and tray for the second one,

thanks again mate
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Redhatter
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Joined: 20 Sep 2003
Posts: 548
Location: Brisbane, QLD, Australia

PostPosted: Mon Jan 16, 2006 12:18 pm    Post subject: Reply with quote

Actually, if you were daring, you can do without the HDD and just netboot the other SGI box ... and use NFS for the root ... just add the stage 3 files.

There's guides on how to set up an NFS root ... basically the stage 3 tarball should have everything you need. On the O2 side of things, set in the PROM, diskless = 1. It should netboot from there -- failing that, running bootp(): in the usual manner should work.
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Stuart Longland (a.k.a Redhatter, VK4MSL)
I haven't lost my mind - it's backed up on a tape somewhere...

Gentoo/MIPS Cobalt developer, Mozilla herd member.
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