FreeBSD 12 r312227 dont boots on Beaglebone black

[Oleksandr Tymoshenko]

Otacílio (otacilio.neto at bsd.com.br) wrote:
> Em 26/01/2017 23:00, Oleksandr Tymoshenko escreveu:
> > Otacílio (otacilio.neto at bsd.com.br) wrote:
> >> Em 26/01/2017 22:31, Oleksandr Tymoshenko escreveu:
> >>> Otacílio (otacilio.neto at bsd.com.br) wrote:
> >>>> Em 25/01/2017 19:13, Oleksandr Tymoshenko escreveu:
> >>>>> Otacílio (otacilio.neto at bsd.com.br) wrote:
> >>>>>> Dears
> >>>>>>
> >>>>>> I'm trying boot a FreeBSD12-armv6-r312227
> >>>>>> (u-boot-beaglebone-2017.01.00.1) on a beaglebone black. The snapshot
> >>>>>> FreeBSD-12.0-CURRENT-arm-armv6-BEAGLEBONE-20170105-r311461.img that I
> >>>>>> downloaded from
> >>>>>> ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/arm/armv6/ISO-IMAGES/12.0/
> >>>>>> works fine, but when I try boot the image that I build on my machine
> >>>>>> using crouchet I get:
> >>>>>>
> >>>>>> U-Boot SPL 2017.01-rc3 (Jan 22 2017 - 23:17:18)
> >>>>>> Trying to boot from MMC1MMC partition switch failed
> >>>>>> *** Warning - MMC partition switch failed, using default environment
> >>>>>>
> >>>>>> reading u-boot.img
> >>>>>> reading u-boot.img
> >>>>>>
> >>>>>> And boot stops. Someone can confirm that the revision 312227 is working
> >>>>>> fine?
> >>>>> I did some digging at the breakage is caused by this commit in U-Boot:
> >>>>> https://www.mail-archive.com/u-boot@lists.denx.de/msg234317.html
> >>>>>
> >>>>> Crochet is using FAT12 for Beaglebone Black. Switching to FAT16 fixes
> >>>>> the problem. Try applying this patch to crochet and re-build image:
> >>>>>
> >>>>> https://people.freebsd.org/~gonzo/patches/crochet-bbb-fat16.diff
> >>>>>
> >>>> I have applied the patch and now I'm getting this error. Some hints?
> >>> FreeBSD uses dtb names that do not match upstream ones. After updating
> >>> to 2017.01 that change was lost in progress. Possible workaround (HACK
> >>> ALERT!!!) would be to do something like this:
> >>>
> >>> => setenv findfdt 'setenv fdtfile beaglebone-black.dtb'
> >>> => saveenv
> >>>
> >>> Copy-paste to U-Boot serial console does not work for me on BBB, so
> >>> you'll have have to enter these commands
> >>>
> >>> I will submit update to u-boot ports so all these workarounds will
> >>> not be required.
> >>>
> >> I'm getting this:
> >>
> >> Type '?' for a list of commands, 'help' for more detailed help.
> >> loader> setenv findfdt 'setenv fdtfile beaglebone-black.dtb'
> >> Error: stack underflow
> >> loader>
> > No, setenv/saveenv should be done in u-boot. But this gave me
> > an idea. You can also mount root partition on SD card and
> > add following line to /boot/loader.conf:
> >
> > fdt_file="beaglebone-black.dtb"
> >
> > That should do the trick as well
> >
> I have added
> 
> fdt_file="bboneblk.dtb"
> 
> (because this is the name that I found on fat partition) to 
> /boot/loader.conf but still getting

No, in this case it's not about what's on FAT it's what in
/boot/dtb/ on root partition. That's where loader looks for
DTB files. 

I don't have crochet setup handy right now so can't check
end-to-end procedure, but I'll do it tomorrow.

> 
> DRAM: 512MB
> Number of U-Boot devices: 3
> U-Boot env: loaderdev not set, will probe all devices.
> Found U-Boot device: disk
>    Probing all disk devices...
>    Checking unit=0 slice=<auto> partition=<auto>... good.
> Booting from disk0s2a:
> /boot/kernel/kernel data=0x609624+0x1a29dc syms=[0x4+0x89070+0x4+0x9d363]
> /boot/kernel/geom_label.ko text=0x4de8 data=0x870+0x4 
> syms=[0x4+0x12c0+0x4+0x1061]
> 
> Hit [Enter] to boot immediately, or any other key for command prompt.
> Booting [/boot/kernel/kernel]...
> No valid device tree blob found!

-- 
gonzo