Hi Hans,
On 2014/8/23 21:34, Hans de Goede wrote:
Hi,
On 08/22/2014 06:59 PM, Simos Xenitellis wrote:
Hi All,
After the recent thread about interview questions to Allwinner,
https://groups.google.com/d/topic/linux-sunxi/OMe3pcilb3Y/discussion
I got an email from Kevin (Allwinner, Manager at Linux kernel development
group) and Sugar (Allwinner, Linux kernel development group) that they will
provide technical support to the community directly.
I cc: both of them in this mail.
Hi Kevin, Shuge,
I think it is great that Allwinner wants to get more involved in
upstream sunxi support.
As one of the 2 custodians (maintainers) for the upstream u-boot
support for sunxi devices, I would like to ask Allwinner to also
get more involved in upstream u-boot support. Ideally Allwinner
would switch to using upstream u-boot entirely, including using
a standard u-boot SPL, rather then chainloading an older u-boot
fork through boot0 and boot1.
In my personal opinion, I also very very agree it.
I can understand that completely switching to upstream u-boot
will take time, and that you may need some additional features
in upstream u-boot before you can switch. In the mean time it
would be great if you could help us extend the existing sunxi
support in upstream u-boot. Currently we support sun4i, sun5i
and sun7i. We would love to also support sun6i and sun8i (and
the A80).
Thanks your works. I will try my best to offer some help to upstrem
u-boot. If you have any questions, you can free contact me.
We already have some limited sun6i and sun8i support in the linux-sunxi
u-boot-sunxi git repository. The biggest stumbling block keeping
us from adding support for sun6i and sun8i is the lack of code
to initialize the DRAM controller. It would be a big help for
us if you could share the boot0 code for sun6i and sun8i with
us, either under an open license, or with an explicit permission
notice for copy and pasting parts of that code and releasing the
result under a GPLv2+ license.
Sorry, I do not have the relevant code. I will tell these things to
my colleagues. They will discuss and decide whether to open source code
about DRAM or not.
If you've any questions about or suggestions for upstream
sunxi u-boot support please send a mail to me and Ian Campbell
(the other sunxi custodian, whom I've added to the CC).
Regards,
Hans
p.s.
Note that even though I'm using my company's email address for this,
that I do my sunxi u-boot / Linux work on a personal title.
.
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