Date: Sat, 17 Oct 2020 11:34:44 -0500 From: "Brandon Bergren" <bdragon@FreeBSD.org> To: "FreeBSD PowerPC ML" <freebsd-ppc@freebsd.org> Subject: =?UTF-8?Q?Re:_kernel_panic_when_booting_FreeBSD-12.1-RELEASE-_powerpc-bo?= =?UTF-8?Q?otonly.iso?= Message-ID: <f742572b-69ba-4f44-8a39-bf51c1562d6e@www.fastmail.com> In-Reply-To: <327983317.255460.1602862192017@mail.yahoo.com> References: <665650437.194869.1602849576719.ref@mail.yahoo.com> <665650437.194869.1602849576719@mail.yahoo.com> <327983317.255460.1602862192017@mail.yahoo.com>
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The fix for this is to backport my r362179 changes, while preserving the sparc64 compatibility. Some pieces of the scc driver are hardcoded for SUN channel spacing, so the driver doesn't get set up properly when attaching to escc. Specifically, a constant interrupt happens on channel A and it doesn't clear it properly because it's writing to the wrong address. On Fri, Oct 16, 2020, at 10:29 AM, Neal Elliott via freebsd-ppc wrote: > I managed to get the OS to boot without panicking, by changing the > output and input devices to "scca". however the system still hangs. I > have a suspicion, that the OS is booted up, but I don't know how to > tell FreeBSD to use the serial console on boot up. > > > > output-device "/pci@f2000000/mac-io@c/escc/ch-b" > input-device "/pci@f2000000/mac-io@c/escc/ch-b" > > 0 > setenv output-device scca ok > 0 > setenv input-device scca ok > 0 > boot Trying cdrom:,\ppc\loader... > Consoles: Open Firmware console > > FreeBSD/powerpc Open Firmware loader, Revision 0.1 > Memory: 131072KB > Booted from: /pci@f2000000/mac-io@c/ata-4@21000/cdrom@0 > > Loading /boot/defaults/loader.conf > /boot/kernel/kernel data=0xd950fc+0x3030b8 > syms=[0x4+0x98790+0x4+0xff011] > | -- Brandon Bergren bdragon@FreeBSD.org
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