Hi,
If your kernel is bigger than 8 MB, you need a kernel with commit:
commit 486df8bc4627bdfc032d11bedcd056cc5343ee62
m68k: Increase initial mapping to 8 or 16 MiB if possible
If your RAM is not at 0 address, you need also:
commit f1a1b63529986d0c8970da182f0935eae059421b
m68k: Fix boot regression on machines with RAM at non-zero
Both commits are in kernel 3.16 and later.
To help to debug, what is the last letter displayed by the kernel before
crash ?
(did you set CONFIG_EARLY_PRINTK ?)
Laurent
Le 07/08/2015 06:29, Greg Andrzejewski a écrit :
> Greetings,
>
> After finally getting my Mac SE/30 working again, I set about trying to
> get a modern version of Linux installed on the little fellow. Early
> experiments with 3.14 kernels were successful and when a trio of Quadra
> 950s appeared on the local craigslist, I picked them up, looking forward
> to a more powerful 68k machine. Problem is I can't get any recent kernel
> to boot.
>
> I've tried using Penguin-19 on MacOS 7.1 and 7.5.3 with identical
> results; the machine just hangs on the "Bootling Linux" message. The
> screen never clears, nothing even comes across the serial port with
> earlyprintk. I installed MacsBug in hopes of finding something useful in
> __log_buf on reboot, but the entire buffer is empty (zeros). I'd suspect
> the bootloader is at fault, but Penguin successfully boots a 4.0.0
> kernel on my SE/30. Penguin log is attached, in case anyone's interested.
>
> Still not 100% confident in Penguin, I tried booting with an EMILE
> rescue disk. EMILE reads the kernel from disk and shortly thereafter the
> chimes of death play (!!!!). Is this something the kernel can
> intentionally do or is it more likely sort sort of triple fault-like
> situation?
>
> I've done a touch of kernel debugging, but this was on x86 and never
> this early in the boot process. What next steps can I take to further
> debug this issue? I've glanced at the early arch code, but all I really
> got out of it was a few chuckles from the comments venting about
> Apple's, uh, peculiar hardware design.
>
> Thanks,
> Greg
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