[U-Boot] Download kernel/rootfs and boot on them

Hi, We are working with a few cards. We generate linux embedded images with Yocto (using U-boot as bootloader), and we deploy it manually on SD cards. This works well for now, when we are in test phase and don't have a lot of cards. But later, it'll be definitely too slow. We have a central serve

[U-Boot] Compile u-boot with specific options (bootargs)

Hello, after a lot of attempts, I've finally managed to automatize deployment of images on i.mx6 sabresd using network. I initially boot from SD card, where there is u-boot. The boot.scr makes u-boot download a kernel and a minimal rootfs (a .cpio.gz.uboot) and boot on RAM. From this minimal image