[yocto] raspberrypi3-64 target not booting

[Paul Barker]

On Fri, Sep 8, 2017 at 1:17 PM, Andrea Galbusera <gizero at gmail.com> wrote:
> On Fri, Sep 8, 2017 at 11:22 AM, Paul Barker <pbarker at toganlabs.com> wrote:
>>
>> On Fri, Sep 8, 2017 at 10:18 AM, Andrea Galbusera <gizero at gmail.com>
>> wrote:
>> >
>> > The only particular configuration I have here (and probably did not have
>> > when testing it a while ago) as you can guess by the missing target name
>> > is
>> > that i boot to U-Boot with KERNEL_IMAGETYPE = "uImage". Does this ring a
>> > bell to anyone?
>>
>> Good timing, this is what I'm actually looking at today! The arm64
>> arch does not support the legacy "uImage" format. We need to use the
>> "Image" format (or "Image.gz") and use "booti" in u-boot instead of
>> "bootm".
>>
>> For now, you'll need to build without u-boot for raspberrypi3-64 by
>> unsetting KERNEL_IMAGETYPE.
>
>
> Understood, maybe we can test transitioning toward using "booti" and any of
> the modern image formats for both raspberrypi3 and raspberrypi-64? This
> should keep the platforms more aligned hence easing layer maintenance...
>

Unfortunately "booti" is only supported on arm64 and "bootm" is only
supported on 32-bit arm.

I'm leaning towards having one variable, RPI_USE_U_BOOT, which when
set to "1" will set KERNEL_IMAGETYPE correctly and enable u-boot.

Thanks,

-- 
Paul Barker
Togán Labs Ltd