[parisc-linux] Serial support in IPL

[Pavel Roskin]

Hello, Matt!

> A couple suggestions(obvious but worth checking),
> 
> - Make sure all keyboards are unplugged
> - Have you tried both serial ports?
> - Are you sure your serial console is working?

The cable was bad. Now it works!!! Thank you for the tip!

Now I can interact with firmware and IPL. I can edit the prompt and load
the kernel. But the kernel doesn't show anything:

Please enter the command-line:
/stand/vmlinux HOME=/ TERM=LINUX console=tty

SOM-Kernel:
aux_header_location: 00000080
som       : 01000080
exec_dfile: 00145000
exec_dsize: 000B9000
exec_dmem : C01F5000
exec_tfile: 00050000
exec_tsize: 000F4008
exec_tmem : C0100000
exec_bsize: 00060FE0
exec_entry: C0100000
Code at 0x00100000, size=0x000F4008
Data at 0x001F5000, size=0x000B9000
BSS  at 0x002AE000.
exec_entry: C0100000

Transferring control to kernel. (At entry point 0x00100000)

That's all I see. I have tried console=serial, console=ttyS0, I have tried
to remove the "console" parameter - no effect. I cannot see where that
"console" parameter is parsed.

I'm using Image-20000218.bin

Anyway, I have yet a lot of things to try (including compiling the latest
version). Thank you for your help.

Regards,
Pavel Roskin