[PATCH 07/11] env: Enable SPI flash env for rockchip

[Jagan Teki]

Hi Kever,

On Mon, Dec 23, 2019 at 8:04 AM Kever Yang <kever.yang at rock-chips.com> wrote:
>
> Jagan,
>
>
> On 2019/12/21 下午3:54, Jagan Teki wrote:
> > Most of the SPI flash devices in rockchip are 16MiB size.
> >
> > So, keeping U-Boot proper offset start from 128MiB with 1MiB
> > size and then start env of 8KiB would be a compatible location
> > between all variants of flash sizes.
> >
> > This patch add env start from 0x14000 with a size of 8KiB.
>
> What's the space map in SPI flash suppose to be? Including
> tpl/spl/u-boot.itb
>
> I would prefer to use 128KiB-8KiB as the env start address, we'd better
> to avoid the
>
> risk of overlap between the env space and the firmware space.

Here is the 16MiB flash layout, I have used. I can see the loader1
(tpl/spl) can be possible to load at 0x0 or 0x32K so I have given the
space for it. and 8K env after loader2(u-boot). let me know your
thoughts?

          0x0 - 0x8000,       32K  =>  reserved/loader1
    0x8000 - 0x40000,    224K =>  loader1
  0x40000 - 0x140000,    1M  =>  loader2
0x140000 - 0x142000,    8K  =>   env
0x142000 - 0x842000,    7M  =>  kernel
0x842000 - 0x853800,  100K =>  dtb
0x853800 -                             =>  root

Jagan.