[Arm-netbook] EOMA68-jz4775 first usb-loader hello-world success

Paul Boddie paul at boddie.org.uk
Tue Jan 5 22:54:09 GMT 2016

On Tuesday 5. January 2016 21.21.57 Luke Kenneth Casson Leighton wrote:
> http://rhombus-tech.net/ingenic/jz4775/news/
> yippeee!  the jz4775 cpu card didn't blow up, instead it announced
> itself on the usb bus, and i was able to modify a CI120 usbloader i
> found, to upload a UART0-based "hello world" program.  next phase
> would be to initialise the DDR3 RAM, then compile and upload u-boot
> into DDR3 RAM and execute it.
> all very exciting

Very encouraging! The CI20 bare-metal stuff is rather educational and it helps 
to explain various things that you can see in other code related to the 
Ingenic SoCs.

It'll be interesting to see whether the jz4775 is close enough to the other 
SoCs for various initialisation things to work straight away with limited 
reconfiguration, perhaps even things like the framebuffer.


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