chainload barebox from uboot

[Frank Wunderlich]

Hi,

documentation says that barebox can be loaded from uboot:

https://www.barebox.org/doc/latest/user/barebox.html#starting-barebox

i tried the ./barebox.bin and the barebox-rk3568-*.img, both are not working in uboot.

=> fatload mmc 1:2 ${scriptaddr} barebox-rk3568-bpi-r2pro.img
reading barebox-rk3568-bpi-r2pro.img
768000 bytes read in 68 ms (10.8 MiB/s)
=> bootm ${scriptaddr}
Fdt Ramdisk skip relocation
Wrong Image Format for bootm command
ERROR: can't get kernel image!

=> fatload mmc 1:2 ${scriptaddr} barebox.bin
reading barebox.bin
860784 bytes read in 76 ms (10.8 MiB/s)
=> bootm ${scriptaddr}
Fdt Ramdisk skip relocation
Wrong Image Format for bootm command
ERROR: can't get kernel image!

documation talkes about a "arch/$ARCH/pbl/zbarebox.bin" but i have no such file. Symbol PBL_IMAGE is already set to y

for testing i used my vendors uboot

=> version
U-Boot 2017.09 (Nov 21 2021 - 14:25:03 +0100)

isn't it possible to chainload barebox from uboot or do i miss any config-option to get the right image?

regards Frank