[U-Boot] U-Boot as first bootloader on Exynos platforms

[Paul Kocialkowski <contact@paulk.fr>]

Hi,?
Le lundi 29 f?vrier 2016 ? 19:03 -0700, Simon Glass a ?crit?:
> On 29 February 2016 at 03:15, Lukasz Majewski <l.majewski@samsung.com> wrote:
> > > I was told some time ago that a publicly-available version of the
> > > Samsung Chromebook 2 (supposedly, the one with an Exynos 5800 SoC)
> > > allows running unsigned code (the U-Boot SPL) directly after the
> > > bootrom. Is that correct?
> > > 
> > > Do you know of any (other) publicly available device with an Exynos
> > > SoC that doesn't check for the first bootloader's signature, and thus
> > > could load the U- Boot SPL without any intermediary signed stage on
> > > storage memory?
> > 
> > For sure Odroid XU3 needs signed SPL to boot up, so this devel board
> > will not work for you.
> 
> You can use snow which is Chromebook 1, or pit / pi which are
> Chromebook 2. I have not tried its 'BL1' with Odroid XU3 but I doubt
> it will work.

I know those have U-Boot support, but do any of them work without the
proprietary and signed on-memory first stage bootloaders?

I was told that at least snow's bootrom checks the signature of the first
bootloader it loads from memory. Is it the case for all Exynos devices?

Thanks

-- 
Paul Kocialkowski, low-level free software developer on embedded devices

Website: https://www.paulk.fr/
Coding blog: https://code.paulk.fr/
Git repositories: https://git.paulk.fr/ https://git.code.paulk.fr/
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