[PATCH v2] ath79: add support for onion omega

[Jan-Niklas Burfeind]

On 8/14/21 7:08 PM, Lech Perczak wrote:
> [...]
>>>
>>> The six bytes at 001fd00 spell OMEGA.
>> Is this the only data in 0x10000-0x20000? What's in 0x10000-0x11000?
>>
>>>>> +                read-only;
>>>>> +                compatible = "nvmem-cells";
>>>>> +                #address-cells = <1>;
>>>>> +                #size-cells = <1>;
>>>>> +
>>>>> +                macaddr_uboot_1fc00: macaddr at 1fc00 {
>>>>> +                    reg = <0x1fc00 0x6>;
>>>>> +                };
>>>>> +            };
>>>>> +
>>>>> +            partition at 20000 {
>>>>> +                compatible = "tplink,firmware";
>>>>> +                label = "firmware";
>>>>> +                reg = <0x020000 0xfd0000>;
>>>>> +            };
>>>>> +
>>>>> +            art: partition at ff0000 {
>>>>> +                label = "art";
>>>>> +                reg = <0xff0000 0x010000>;
>>>>> +                read-only;
>>>>> +            };
> 
> The whole ordeal looks very much like typical pre-safeloader TP-link
> flash layout, so I expect no writable U-boot environment there, at least
> for stock U-boot.
> Of course, it would be best to check if it's possible to write it using
> serial console, on actual device.
> 

I just tried to copy part of the string "OMEGA" from its current position.

> md 0x9F01FD00
9F01FD00: 4F4D4547[...]

cp 0x9F01FD00 0x9F01FE00 3
> md 0x9F01FE00
9F01FE00: FFFFFFFF[...]

Reading the partition works fine; writing not so much; at least not
within uboot.


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