[U-Boot] Booting a dt zImage kernel

From: Stefano Babic <sbabic@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] Booting a dt zImage kernel
Date: Mon, 23 Apr 2012 17:21:14 +0200	[thread overview]
Message-ID: <4F95736A.7070604@denx.de> (raw)
In-Reply-To: <CAOMZO5A5gzCFU8CQUXfcTUB3qKKcUVPnDHuKNk4oXDhx2aO8gA@mail.gmail.com>

On 23/04/2012 16:13, Fabio Estevam wrote:
> Hi,
> 

Hi Fabio,

> I am able to successfully boot a zImage kernel with latest 2012.04
> U-boot on mx28evk.
> 
> Now I want to boot a dt zImage version.
> 
> These are the steps I am doing:
> 
> make menuconfig and select [*] Support MXS platforms from device tree
> 
> make imx28-evk.dtb
> 
> make
> 
> cat arch/arm/boot/imx28-evk.dtb arch/arm/boot/zImage > arch/arm/boot/zImage_dtb

Is it possible ? Do you not set CONFIG_ARM_APPENDED_DTB in kernel and
let kbuild doing the rest of the job ?

Is there some reason doing this ? I mean, the easy and tested way is to
produce an uImage, and start the kernel from U-Boot with "bootm
<address> - <dtb in ram>". Of course, CONFIG_OF_LIBFDT must be enabled,
it is currently not set in mainline for mx28.

Best regards,
Stefano Babic

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