[U-Boot] Mainline u-boot installation on Odroid-UX4

[Przemyslaw Marczak <p.marczak@samsung.com>]

Hello Shawn,

On 04/07/2016 03:59 PM, Shawn Guo wrote:
> On Thu, Apr 07, 2016 at 12:20:06PM +0200, Przemyslaw Marczak wrote:
>> There were two variants of boot chain with U-Boot for XU3/XU4, which
>> differs in U-Boot size - originally U-Boot was 328K, but for the
>> mainline we assume 1MB of size.
>>
>> So for mainline, you need a prober version of BL2, which loads 1MB
>> of U-Boot instead of 328K - in other way, the mainline U-Boot will
>> be overwritten by tzsw and env.
>>
>> Please use the resources from this site:
>> https://github.com/hardkernel/u-boot/tree/odroidxu3-v2012.07/sd_fuse/hardkernel_1mb_uboot
>
> Thanks much, Przemyslaw.  It works now.
>
> I think we should update README.odroid a bit to ease future users.  Do
> you prefer something like the patch below, or we simply replace the
> existing link with hardkernel_1mb_uboot one, considering the default
> U-Boot image today is already bigger than 328KB anyway?
>
> Shawn
>

Good point, it wasn't updated for a long time. Yes, useful U-Boot's size 
is much bigger than 328k, so you can just, replace the link.

> ---8<----
>
> diff --git a/doc/README.odroid b/doc/README.odroid
> index ef243d1bde36..f0d1aa98542f 100644
> --- a/doc/README.odroid
> +++ b/doc/README.odroid
> @@ -33,6 +33,10 @@ http://odroid.in/guides/ubuntu-lfs/boot.tar.gz
>   It can be downloaded from:
>   https://github.com/hardkernel/u-boot/tree/odroidxu3-v2012.07/sd_fuse/hardkernel
>
> +If U-Boot image is bigger than 328KB, the following binaries should be
> +used instead.
> +https://github.com/hardkernel/u-boot/tree/odroidxu3-v2012.07/sd_fuse/hardkernel_1mb_uboot
> +
>
>   4. Boot media layout
>   ====================
>
>
>

It would be nice if you could update the supported fdt files list at 
line 25 of doc/README.odroid - with file: exynos5422-odroidxu4.dtb, 
mentioned by Anand Moon.

Best regards,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com