Re: debugging a kernel that doesn't start

[Kengo NAKAHARA <k-nakahara%iij.ad.jp@localhost>]

Hi,

On 2022/09/13 4:17, Edgar Fuß wrote:
> I'm trying to run NetBSD on a Dell PowerEdge R6515, and the kernel is being
> loaded (PXE or USB) but then the machine hangs hard.
>
> What's the way to debug a kernel that hangs so early that you can't printf
> or drop into ddb? I guess that's a phenomenon quite common for a new port
> or changes to locore.s (or whatever that's called today), but it's completely
> new to me.
>
> I have virtually no clue about PeCee hardware. At the point the kernel is
> started, are BIOS routines still available?

If you use -current, I think it may hit the following issue.
    http://gnats.netbsd.org/54962

Could you try the patch in PR?


Thanks,

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Kengo NAKAHARA <k-nakahara%iij.ad.jp@localhost>