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@xxxxxxxxxxxxxx> 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.
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