[U-Boot] imx7 u-boot nand update from u-boot

[Belisko Marek]

Hi Jagan,

On Thu, Sep 29, 2016 at 1:23 PM, Jagan Teki <jagannadh.teki at gmail.com> wrote:
> On Thu, Aug 4, 2016 at 11:52 AM, Belisko Marek <marek.belisko at gmail.com> wrote:
>> Hi,
>>
>> I'm trying to figure out how it is possible easily update u-boot in
>> nand on custom imx7 board. I can start u-boot using imx_usb tool. I
>> came from ti am33xx world where I simply get u-boot.img from tftp
>> server and store it to beginning of flash (after SPL offset).
>>
>> According imx7 datasheet for nand boot it is necessary to store FCB +
>> DBBT and other things. It is currently possible only with userspace
>> tool kobs-ng which can save u-boot to nand memory. It is possible to
>> generate such image (with FCB, ...) to be able to update u-boot from
>> u-boot by tftp and some nand write? Or it is enough to just write
>> u-boot.imx to offset 0x400 when u-boot was writen before by kobs-ng
>> and it will work? Many thanks for replies.
>
> Try this patch[1] for nand bootupdate look fine for me.
Thanks a lot. I'll look on it. Cheers.
>
> U-Boot> tftp ${loadaddr} SPL
> U-Boot> nand bootupdate ${loadaddr} ${filesize}
>
> U-Boot> nand erase 0x200000 0x100000
> U-Boot> tftp ${loadaddr} u-boot.img
> U-Boot> nand write ${loadaddr} 0x200000 ${filesize}
>
> [1] https://patchwork.ozlabs.org/patch/637573/
>
> thanks!
> --
> Jagan Teki
> Free Software Engineer | www.openedev.com
> U-Boot, Linux | Upstream Maintainer
> Hyderabad, India.


BR,

marek
-- 
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