On Tue, Jan 5, 2016 at 10:54 PM, Paul Boddie <[email protected]> wrote: > 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.
yeah, it's kinda cool. slightly scarily low-level and more like the ST devkit, but very cool. > 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. first hardware difference is that the clock i'm running the eoma68-jz4775 board off of is 24mhz not 48. i've managed to compile ingenic's jz4775 version of u-boot 1.1.6, i'll be putting that onto an sd card tomorrow and changing the boot selection to see if it recognises booting from MMC0. that will help confirm a heck of a lot of bits of hardware. l. _______________________________________________ arm-netbook mailing list [email protected] http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to [email protected]
