Hi Peter, On Fri, 3 Jul 2020 at 06:33, Peter Geis <pgwipeout@xxxxxxxxx> wrote: > > Good Morning, > > I am attempting to expand on the work for chainloading U-Boot on the > nyan-big in order to chainload U-Boot on the Ouya Tegra30 device from fastboot. > I have so far been unsuccessful at getting any output from U-Boot > through this method. > > I'm building the cardhu board with tweaks for Ouya's specifications > similar to my work for the linux kernel. > I build the image using mkbootimg --kernel u-boot.bin --ramdisk > /dev/null --output u-boot-android.bin. > I then fastboot boot u-boot-android.bin. > > I've tried tweaking the text base and tried both standard debug and > low level debug. > > Do you think you could give me some insight into where I'm going wrong? Is it possible that fastboot expects a relocatable image? If you set up the debug UART very early you might be able to output a character in start.S ? BTW does U-Boot have support for the fastboot protocol? Perhaps you could just use U-Boot? Regards, Simon
