Re: pi zero

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Thu, Aug 08, 2019 at 02:47:03PM +0100, Nick Hudson wrote:
> Raspberry Pi got FDTised around this time

That's it

> https://mail-index.netbsd.org/source-changes/2017/12/10/msg090386.html
After this one, the build didn't quite finish, so I didn't test it.


after this one - rainbow! (surprise)
> https://mail-index.netbsd.org/source-changes/2017/12/11/msg090395.html
before this one, working console

> Iirc, the  rainbow screen means no kernel/dtb is loadable by the firmware.

The MSDOS partition in the rpi_inst.img looks like
"after":
total 69504
-rwxr-xr-x  1 root  wheel      1494 Aug  8 17:01 LICENCE.broadcom
-rwxr-xr-x  1 root  wheel     17932 Aug  8 17:01 bootcode.bin
-rwxr-xr-x  1 root  wheel       116 Aug  8 17:01 cmdline.txt
-rwxr-xr-x  1 root  wheel       125 Aug  8 17:01 config.txt
-rwxr-xr-x  1 root  wheel      6624 Aug  8 17:01 fixup.dat
-rwxr-xr-x  1 root  wheel      2533 Aug  8 17:01 fixup_cd.dat
-rwxr-xr-x  1 root  wheel  32073172 Aug  8 17:01 kernel.img
-rwxr-xr-x  1 root  wheel   2823716 Aug  8 17:01 start.elf
-rwxr-xr-x  1 root  wheel    634948 Aug  8 17:01 start_cd.elf
"before":
total 69336
-rwxr-xr-x  1 root  wheel      1494 Aug  8 19:30 LICENCE.broadcom
-rwxr-xr-x  1 root  wheel     17932 Aug  8 19:30 bootcode.bin
-rwxr-xr-x  1 root  wheel       116 Aug  8 19:30 cmdline.txt
-rwxr-xr-x  1 root  wheel       125 Aug  8 19:30 config.txt
-rwxr-xr-x  1 root  wheel      6624 Aug  8 19:30 fixup.dat
-rwxr-xr-x  1 root  wheel      2533 Aug  8 19:30 fixup_cd.dat
-rwxr-xr-x  1 root  wheel  31987156 Aug  8 19:30 kernel.img
-rwxr-xr-x  1 root  wheel   2823716 Aug  8 19:30 start.elf
-rwxr-xr-x  1 root  wheel    634948 Aug  8 19:30 start_cd.elf

so there are no dtb files.

> Can you check if the dtb copy gives you a blank screen, ie no
> rainbow just after these changes. Serial console will help here if
> you have one

Bits for a serial console are on their way - maybe we should resume once
they arrive?

(Still interesting that it works for Rin. Mine's a V1.1.)


Cheers,

Patrick