On 8/7/15, Laurent Vivier <laur...@vivier.eu> wrote: > 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 >
That's the problem I'm having. CONFIG_EARLY_PRINTK is set, earlyprintk passed on the command line, but I get nothing on screen, nothing over the serial port, and nothing in the log buffer. Same kernel image boots on my SE/30. I'm using kernel 4.0 and decompressed image size is 3.5 MB, so I don't think I'm running into either of those two issues. Unless... don't macs shadow the ROM at physical address 0 on powerup? Could this be triggering as part of the shutdown of MacOS? -Greg > 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 > -- To UNSUBSCRIBE, email to debian-68k-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/cabnbs13ppuwjafzzmfa-5c+quqryo_gcftdhz1_sywj4g31...@mail.gmail.com
