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

Kever Yang
2019-12-27T10:02:46Z

On 2019/12/27 下午2:50, Jagan Teki wrote:
> Hi Kever,
>
> On Mon, Dec 23, 2019 at 8:04 AM Kever Yang <kever.yang@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

spi NOR need 4KB as erase size, so this may need update , other item
looks ok.

Thanks,

- Kever

> 0x853800 - => root
>
> Jagan.
>
>