Cubieboard2 with custom bootloader

[Emmanuel Vadot]

On Thu, 15 Dec 2016 08:29:20 +0200
Mihai Carabas <mihai.carabas at gmail.com> wrote:

> Hello Manu,
> 
> We've tried multiple methods:
> 1. precompiled u-boot from FreeBSD packages  + ubldr
> 2. u-boot compiled from sources + your patches + ubldr
> 3. precompiled u-boot from FreeBSD packages + kernel
> 4. u-boot compiled from sources + your patches + kernel
> 
> For 1 and 2 we didn't manage to start ubldr. Do we need to add any custom
> option to u-boot?
> 
> For 3, we manage to boot it normally.
> 
> With 4, we have the following error:
> => setenv bootcmd "fatload mmc 0:1 0x42000000 kernel.bin; go 0x42000000"
> => boot
> reading kernel.bin
> 6758372 bytes read in 589 ms (10.9 MiB/s)
> ## Starting application at 0x42000000 ...
> panic: mtx_lock() of spin mutex (null) @
> /root/bhyve-ARM/src/sys/arm/arm/pmap-v6.c:6350
> cpuid = 0
> Uptime: 1s
> 
> How did we compile u-boot:
> - we took 2016.11 from here[1] (u-boot-2016.11.tar.bz2)
> 
> - apply patches and compile
> root at bsd:~/u-boot-2016.11 # patch -p1 -i ../
> people.freebsd.org/\~manu/uboot/0001-....
> root at bsd:~/u-boot-2016.11 # make CROSS_COMPILE=arm-none-eabi-
> Cubieboard2_config
> root at bsd:~/u-boot-2016.11 # make CROSS_COMPILE=arm-none-eabi-
> 
> - and used the u-boot-sunxi-with-spl.bin
> ?
> Do you have any insight? (at least for thr 4th method)
> 
> Thank you,
> Mihai

 For 1 and 2, as Ganbold said ubldr is broken since clang 3.9 import
(well only ubldr.bin for me ...)
 For 3 and 4 I've never tested booting kernel directly, I'll try that.
 Does your kernel have a static dtb compiled in ?

-- 
Emmanuel Vadot <manu at bidouilliste.com> <manu at freebsd.org>