On 2008年2月18日, Henry Bent wrote:
Hi all,
I'm aware that vax may not be considered very stable right now, but at
least a kernel builds again. This looks to be the work of Matt Thomas
so Matt, if you're reading this, thank you very much!
On to the problem. A -current kernel will begin booting, but as soon
as it prints the memory sizes it drops right back to the ROM monitor.
It looks like:
...
VAXstation 3100/m{30,40}
cpu: KA41/42
cpu: Enabling primary cache, secondary cache
total memory = 8060 KB
avail memory = 6076 KB
and then I immediately get returned to the monitor. The next line
should be
mainbus0 (root)
I compiled a kernel with DEBUG on but didn't see any change at all.
How should I go about debugging this?
The brute force option is to start dropping printf() lines in to
see exactly where its failing. I assume your familiar with
crosscompiling just the kernel to test changes? Its unfortunate
its not ending up in DDB which would make debugging this much
easier :/