No suitable SOC memory configuration found.

[Kyle Evans]

On Tue, Dec 17, 2019 at 4:12 PM bob prohaska <fbsd at www.zefox.net> wrote:
>
>
> After updating 12-stable on a Pi2B with a GENERIC kernel the machine
> started to fall into an endless boot cycle, reporting in part:
> .....
> iichb1: <BCM2708/2835 BSC controller> mem 0x804000-0x80401f irq 10 on simplebus0
> spi0: <BCM2708/2835 SPI controller> mem 0x204000-0x20401f irq 11 on simplebus0
> spibus0: <OFW SPI bus> on spi0
> bcm_dma0: <BCM2835 DMA Controller> mem 0x7000-0x7fff,0xe05000-0xe05fff irq 12,13,14,15,16,17,18,19,20,21,22,23,24 on simplebus0
> Checking root against brcm,bcm2836
> panic: No suitable SOC memory configuration found.
> cpuid = 0
> time = 1
> Uptime: 1s
> Automatic reboot in 15 seconds - press a key on the console to abort
> .....
>
> I don't think it's the kernel, because two other kernels, one in the 11-stable
> vintage, do the same thing. I did make some changes to /boot/loader.conf and
> would like to try skipping it in a boot to single-user to see what happens.
> The changes didn't cause obvious/immediate problems, but I've no better ideas.
>
> Is there some way let the kernel boot -s without reference to loader.conf?
>

To circle back to the list, we discovered this board was running
legacy dtb that used the old "brcm,bcm2709" root compatible string.
r355875 was committed to fix this in head/, and I will MFC it to
stable/12 in a day or two. stable/11 doesn't have and will not receive
any of the affected code.

Thanks!

Kyle Evans