[flashrom] Support for programming device on SPI via USB bridge?

[David Hendricks]

On Wed, Mar 25, 2015 at 3:46 AM, Robert Selby <Robert.Selby at snellgroup.com>
wrote:

>  Hi, just found FlashRom and looks to be a good base to start from for my
> needs.
>
> I have a USB->SPI bridge device (MCP2210) and on it’s SPI bus is a “
> S25FL128S” device.
>
> It looks as though there is no direct support for accessing via the
> MCP2210.
>
> I assume that I would need to write a “programmer” to get this to work ???
>
Yes, you will need to make flashrom speak to the MCP2210.

>  I have a MCP2210 access library that seems to work well via “/dev/hidraw”
> .
>
That should work so long as you can wrap generic data into a protocol that
MCP2210 will understand.

I'm not sure about the existing library using /dev/hidraw... If you want to
use libusb then you might want to check out ft2232_spi.c as an example.


>  Any advice/recommendations very welcome.
>
> It may be that someone has already done this …
>
> Regards,
> Bob
>
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-- 
David Hendricks (dhendrix)
Systems Software Engineer, Google Inc.
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