OK. I'm really upset now. 188.8.131.52 told me that I had a BogoMIPS
rating of 50.03. Now, I go and boot 1.3.62 and I have only 49.87.
Who, exactly, is going to pick up the over .16 BogoMIP? Tell me that,
why don't you? BogoMIPS don't grow on tress, you know. If I wanted
only 49.87 BogoMIPS, I'd be running NT...
:-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-)
Or, in other words, 1.3.62 seems to work for me, for a suitible
definition of work. Here's the boot sequence. Seems like a thing or
two is amiss:
Launching Kernel... (bold font, rest lighter)
Console: 0 point font, 0 scans
Console: colour VGA+ 80x50, 1 virtual console (max 63)
Calibrating delay loop.. ok - 49.87 BogoMIPS
Memory: 31280k/32768k available (424k kernel code, 964k data)
Swansea University Computer Society NET3.033 for Linux 1.3.50
NET3: Unix domain sockets 0.10 BETA for Linux NET3.033.
Checking for 'wait' instruction... unavailable.
Linux version 1.3.62 (email@example.com) (gcc version 2.7.2) #29 Tue Feb 13
22:36:40 MST 1996
initialize_kbd: reset kbd failed, no ACK.
Floppy drive(s): fd0 is 1.44M
Started kswapd v 184.108.40.206
floppy0: no floppy controllers found
VFS: Insert root floppy and press ENTER
Well, as you might have guessed from the above messages, it hangs with
the blinking underscore. The keyboard is dead. But after a time, the
screen saver comes on :-) I had to transcribe the above quickly...
This leads me to some questions...
1) Why can't it find the keyboard? Another interrupt thing?
I rebooted a second time (to see if I could find my missing
bogomips) and found that I got a *flood* of keyboard error
2) Why did it find a floopy (fd0) and then say it couldn't
find a controller?
3) Shouldn't I have a WAIT instruction? Hmmm... Not in the
MUM, so maybe not.
Anyway, this is with an almost a bog standard 1.3.62 distribution.
This is good news, I think. The diffs between what I built and 1.3.62
are about 262 lines long. The diffs are in the ./Makefile (gmake and
awk rather than make and gawk), the load address chanage that I sent a
while ago to this list in arch/mips/Makefile, a couple of lines of
debug that incremented the upper righthand corner of the screen on
each interrupt in arch/mips/kernel/rpc44.S, spurious_interrupt removed
from rpc44.S and tyne.S, a horrible kludge in init/main.c in
calibrate_delay (outb(0,0x21)), a hack to scripts/Config to use a
local bash and a horrible video kludge vga.c (which is replicated
code). Time to take my kludges out one at a time and see if that
helps my situation. Anyway, this is likely trivia for most people,
but good places to look if you are adding a new machine type.
Why does it now work? Obviously, it is because Ralf is a God. It may
have also been faulty hardware on my end. I noticed that the system
BIOS thought LPT lived at IRQ 0 for some reasoon. Changed that to 7,
but the old kernels wouldn't boot right, the "second" interrupt
problem that I talked about before, but the new ones booted as above.
I now have a new slew of problems to solve, plus some interesting
integration issues to solve that Ralf raised. Plus all the other cool
stuff I wanted to work on :-).
I'm much happier now about my MIPS box...