From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dirk Behme <dirk.behme@googlemail.com>
Date: Tue, 24 Apr 2012 19:00:53 +0200
Subject: [U-Boot] [STATUS] Are we ready for v2012.04.1 ??
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On 24.04.2012 18:21, Fabio Estevam wrote:
> Dirk,
>
> On Tue, Apr 24, 2012 at 4:58 AM, Dirk Behme<dirk.behme@de.bosch.com>  wrote:
>> I tested the recent master which includes the three patches planned for
>> v2012.04.1 booting a device tree based kernel and it works :)
>
> Have you tested it on a mx6qsabrelite using the latest mainline kernel?

Yes.

Just to make sure: You use the recent mainline with the 4 additional 
patches on top of v2012.04:

http://git.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=summary

> My kernel did not boot.
>
> This was what I did:
>
> make imx_v6_v7_defconfig
> make
> make imx6q-sabrelite.dtb
>
> cat arch/arm/boot/zImage arch/arm/boot/imx6q-sabrelite.dtb>
> arch/arm/boot/zImage_dtb
>
> mkimage -A arm -O linux -T kernel -C none -a 0x10008000 -e 0x10008000
> -n Linux -d arch/arm/boot/zImage_dtb arch/arm/boot/uImage_dtb
>
> cp arch/arm/boot/uImage_dtb /tftpboot/uImage
>
> It used to work before. Is this still valid?

I don't know ;) Or better: I don't use the device tree append method.

I don't have the details here, but what I do (out of my head, so there 
might be some details wrong):

Use the mainline kernel 3.4-rc4
make imx_v6_v7_defconfig
make LOADADDR=0x10800000 uImage

dd if=u-boot.imx of=/dev/sdd bs=512 skip=2 && sync
dd if=imx6q-sabrelite.dtb of=/dev/sdd bs=512 skip=1024 && sync (<- put 
the dtb to 512kB on the SD card)
dd if=uImage of=/dev/sdd bs=512 skip=2048 && sync (put the uImage to 1MB)

and then in U-Boot:

mmc read 0x12000000 0x800 0x2000 (read the kernel to 0x12000000)
mmc read 0x11ff0000 0x400 0x40 (read the device tree to 0x11ff0000)
bootm 0x12000000 - 0x11ff0000

You could do the same using tftp as proposed by Shawn:

tftpboot 0x12000000 uImage; tftpboot 0x11ff0000 imx6q-sabrelite.dtb; bootm
0x12000000 - 0x11ff0000

Again, this is just out of my head, so sorry if something is wrong.

Best regards

Dirk