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

[Shawn Guo <shawnguo@kernel.org>]

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

---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
 ====================