[U-Boot] rk3288: firefly: flashing emmc from maskrom using USB

[Jack Mitchell]

On 15/01/2019 02:05, Kever Yang wrote:
> HI Jack,
>
>
> On 01/15/2019 01:28 AM, Jack Mitchell wrote:
>> I'm having issues flashing the emmc on my firefly board using USB. For
>> some reason it seems as though trying to write to the emmc flash sector
>> 0x40 for uboot spl+proper from the Maskrom/Loader doesn't work. Can
>> anyone elaborate on what I'm doing wrong, or another way I could achieve
>> this?
>>
>> The current state of the emmc is empty, so it boots into the maskrom on
>> reset.
>>
>> I've tried with the Rockchip Loader binary as shown below:
>>
>> $ tools/mkimage -n rk3288 -T rksd -d \
>> 	spl/u-boot-spl-dtb.bin out && \
>> 	cat u-boot-dtb.bin >> out
>>
>> $ rkdeveloptool db RK3288Loader_uboot_V2.17.02.bin
> Where did you get this loader? I think you may need to update it for
> write emmc correctly with 'wl' command, eg. you can merge the loader
> from latest rockchip rkbin with below command:
> tools/boot_merger --replace tools/rk_tools/ .  RKBOOT/RK3288MINIALL.ini
>
> Thanks,
> - Kever

Hi Kever,

Many thanks, that worked perfectly. Could you point me to where this is
documented as I don't believe I've seen any references to using the
merge tool in the rkbin git repo.

Regards,

Jack.

>> $ rkdeveloptool wl 64 out
>>
>> $ rkdeveloptool rd
>>
>> This just loads back into the maskrom as if nothing was written to the emmc.
>>
>> I've used the same method but writing to an sd card:
>>
>> $ tools/mkimage -n rk3288 -T rksd -d \
>> 	spl/u-boot-spl-dtb.bin out && \
>> 	cat u-boot-dtb.bin >> out
>>
>> $ dd if=out of=/dev/sdc seek=64
>>
>> This works fine and boots into full uboot as I would expect, but from
>> the sd card rather than the emmc.
>>
>> I have then flashed the emmc from the sd card running uboot, which then
>> enables me to boot uboot from the emmc.
>>
>> I can also use rockusb from the sd card uboot to flash uboot to the emmc
>> using the following commands:
>>
>> uboot> rockusb 0 mmc 0
>>
>> $ rkdeveloptool wl 64 out
>>
>> $ rkdeveloptool rd
>>
>> This also works. However both working methods require me starting uboot
>> from an sd card in the first instance. How can I successfully flash the
>> emmc using just USB? Any input would be appreciated.
>>
>> Regards,
>> Jack.
>>
>
>