phintegrator Posted April 18, 2016 Share Posted April 18, 2016 Hi All, I have a requirement to boot a whole a20 system over USB as discussed in the link below. http://linux-sunxi.org/FEL/USBBoot#Boot_the_system_over_USB It requires U-Boot + kernel + initramfs to do this. Right now the only part that I succeed is booting on uboot, but not yet in kernel as well as initramfs (which is I dont have yet). I cant find a good tutorial how to do this. Hope someone can help. Thanks in advance. Link to comment Share on other sites More sharing options...
tkaiser Posted April 18, 2016 Share Posted April 18, 2016 Where do you want to put the rootfs on? NFS or a separate USB storage device? Link to comment Share on other sites More sharing options...
phintegrator Posted April 19, 2016 Author Share Posted April 19, 2016 Hello Tomas, At the minimum we need something like this, rootfs resides on the host PC. sunxi-fel -v uboot u-boot-sunxi-with-spl.bin \ write 0x42000000 uImage \ write 0x43000000 sun7i-a20-cubietruck.dtb \ write 0x43100000 boot.scr \ write 0x43300000 rootfs.cpio.lzma.uboot But,it will be great if it is possible to put the rootfs in a USB storage device. (can you share an instructions) Thanks. Link to comment Share on other sites More sharing options...
phintegrator Posted April 20, 2016 Author Share Posted April 20, 2016 Hello Thomas, Thanks sharing an idea. I am now able to boot my A20 on a usb storage device through fel mode. Will try to update this post with the instruction on how I was able to did that. Best Regards. Link to comment Share on other sites More sharing options...
tkaiser Posted April 20, 2016 Share Posted April 20, 2016 I am now able to boot my A20 on a usb storage device through fel mode. Will try to update this post with the instruction on how I was able to did that. Highly appreciated sharing your instructions even if I still don't get the whole idea (the only reason I could imagine to use FEL boot apart from image testing is to save every local storage capabilities, that means booting through FEL and rootfs on NFS -- but I'm happy to learn from new use cases) Link to comment Share on other sites More sharing options...
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