Would you (or someone you know) be interested in (paid) consulting,
contract work, or mentorship? I'm a new engineer working as the sole
firmware developer at a startup, and I feel like I'm in a bit over my head.
Even some small amount of guidance would be invaluable for developing as an
engineer and being able to contribute to the company.
Best,
Matt
On Wed, Jun 3, 2020 at 6:15 AM Arti Zirk wrote:
> On T, 2020-06-02 at 22:33 -0500, Matt Krenik wrote:
> > Hello Arti,
> >
> > Thanks so much for your detailed reply. I tried the first suggestion
> > of just zeroing out the initial SPL loader. Its not clear if I
> > accessed the correct location, because there is no /dev/mmcblk0.
> > Instead I tried a few different options, including: '/dev/block/by-
> > name/boot' '/dev/block/by-name/bootloader' and '/dev/block/nanda'.
> > In each of the cases, I believe the device is getting past the
> > initial SPL loader, but is getting stuck on the main bootloader. I'll
> > keep trying to find out what memory device could store the initial
> > SPL loader.
>
> Its possible that SPL is stored in raw NAND or in a SPI Flash chip. You
> probably have to hook up serial console to figure that out.
>
>
> > I did notice that when I probe 'lsusb' when the device is first
> > starting, the device appears in flash mode for a small window of time
> > before loading the bootloader. I have been unable to figure out a way
> > to take advantage of this to flash the device (I tried starting the
> > sunxi-livesuite gui), since it proceeds to the bootloader. This was
> > surprising to me according to the documentation on the Sunxi linux
> > wiki. Its clear that I'm working with some custom/vendor firmware
> > that might differ from what is standard.
> >
> > Again, thanks for your help. It seems that I'm on my own since I'm
> > working with hardware that differs from what this community supports.
> > But if you have any tips on what I can investigate, I would find it
> > extremely helpful.
> >
> > Best,
> > Matt
>
>
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