[Question] How was zedboard lowlevel written?

[Steffen Trumtrar]

Hi!

Masahiro Yamada writes:
> Hello Steffen Trumtrar,
>
> I am seeing arch/arm/boards/avnet-zedboard/board.c
> written by you.
>

Sadly it's been a while since I touched this :(

> Is this file equivalent to ps7_init.c spit by Xilinx tool?
> Or did you write it by hand from scratch ? (I doubt it.)
>
>
> I have ZC706, another Zynq board.
> If I could port barebox to this board, that would be great!
> But I am just worndering whether I could get your advice about
> how to create the lowlevel file.
>

The lowlevel.c/flash_header.c are adapted from the ps7_init code IIRC.
Xilinx uses a prebootloader and a bootloader for the Zynq, barebox does
not. So you would have to put all values into the respective two files.
And you need to run scripts/zynq_mkimage for the checksum (but I think
the Makefile already does that).

I wish I could be of more help here, but I can't really remember the
actual steps necessary and I don't have a ps7_init handy at the moment.

Regards,
Steffen

-- 
Pengutronix e.K.                           | Steffen Trumtrar            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |