Correct command for building U-boot

#1

I try to build U-boot for CM5 but the command in the Docs does not work:
./bsp u-boot rknext radxa-cm5-io

What is the correct command?

#2

I solved it.
First build u-boot like this:
./bsp --no-prepare-source u-boot rk2410 radxa-cm5-io
Then remove the previous u-boot packages:
sudo dpkg --purge u-boot-radxa-cm5-io
sudo dpkg --purge u-boot-rknext
Finally install as usual:
sudo dpkg -i u-boot-rk2410_2017.09-1_arm64.deb