Problems booting a MACCHIATObin Double Shot Rev 1.3 with head -r335027

[greg at unrelenting.technology]

December 1, 2019 1:21 PM, "Mark Millard via freebsd-arm" <freebsd-arm at freebsd.org> wrote:

> I tried to get a MACCHIATObin Double Shot Rev 1.3 to boot -r355027
> . . .
> Hit [Enter] to boot immediately, or any other key for command prompt.
> Booting [/boot/kernel/kernel]...
> Using DTB provided by EFI at 0xbe844018.
> 
> A "|" or "/" sometimes shows up on the next line but it does not
> show the typical sequence of symbols and there is no more evidence
> of progress. The text is seen via the serial console.

Have you tried connecting a GPU and monitor instead? :)

Make sure to have boot_multicons=YES and boot_serial=YES in /boot/loader.conf
if you use serial — if there is an EFI framebuffer (which I think might
be available even without a GPU maybe?? I don't remember) FreeBSD would default
to graphical console only I'm pretty sure.

> I've hypothesized bunches of things that might make a difference,
> none have. I tried putting back the old .efi file. I tried building
> the .dtb from the -r355027 materials and forcing that to be loaded.
> (Each failing alternative was reverted as I went along.) I tried
> an old .dtb file that I had around.

Have you tried ACPI instead of DTB? (in setup, Device Manager - O/S Hardware Description)

Actually on Marcin's builds the serial console might not work with that
because the SPCR table there is intentionally wrong to support Linux, but the links
below should be my builds, you can try ACPI with them (they also remove a
PCIe hack for supporting "~legacy" devices to make other devices
like the Radeon RX 480 work).

https://unrelentingtech.s3.dualstack.eu-west-1.amazonaws.com/flash-image.bin
https://unrelentingtech.s3.dualstack.eu-west-1.amazonaws.com/flash-image2.bin