> The bootflow feature provide a built-in way for U-Boot to automatically > boot an Operating System without custom scripting and other customisation. > This is called 'standard boot' since it provides a standard way for > U-Boot to boot a distro, without scripting. > > It introduces the following concepts: > > - bootdev - a device which can hold a distro > - bootmeth - a method to scan a bootdev to find bootflows (owned by > U-Boot) > - bootflow - a description of how to boot (owned by the distro) > > This series provides an implementation of these, enabled to scan for > bootflows from MMC, USB and Ethernet. It supports the existing distro > boot as well as the EFI loader flow (bootefi/bootmgr). It works > similiarly to the existing script-based approach, but is native to > U-Boot. > > With this we can boot on a Raspberry Pi 3 with just one command: > > bootflow scan -lb > > which means to scan, listing (-l) each bootflow and trying to boot each > one (-b). The final patch shows this.
I wanted to give this a try, but I only get the following output: => setenv boot_targets usb0 => bootflow scan -lb Scanning for bootflows in all bootdevs Seq Method State Uclass Part Name Filename --- ----------- ------ -------- ---- ------------------------ ---------------- Unknown seq 0 for label 'usb0' --- ----------- ------ -------- ---- ------------------------ ---------------- (0 bootflows, 0 valid) where usb0 is a debian installation medium. -michael
