serial Flash over SPI as rootdevice?

[Thomas.Betker at rohde-schwarz.com]

Hello Alexander:

> is it currently possible to use a serial Flash connected over SPI to
> use as a rootdevice?
> If not, would it be possible and which drivers need to be written 
> for that then?

Yes, it is certainly possible; we are doing it ourselves. No extra drivers 
are required for this beyond those you need anyway (SPI driver, SPI flash 
driver).

The real problem, though, is that you cannot boot from standard SPI flash. 
For this, you need memory which can be read directly by the CPU, such as 
parallel NOR flash.

Best regards,
Thomas