I have a Toradex Apalis-iMX8QM SOM, building a linux image with yocto. Everything on the A side is working, u-boot runs fine. Now I want to add some M4 firmware to the imx-boot image that is created.
Looking at the imx-mkimage, it looks like the "flash_linux_m4" target would be the one to use. However, this one relies on an SPL u-boot. The u-boot-toradex branch does not build an SPL u-boot. Is SPL u-boot a requirement for building the u-boot+m4 image due to the size? If not, what would be the right commands to create the imx-boot from a u-boot-atf.bin file and one or more M4 bin files?
Also, where are the imx-mkimage -flags values documented?
Thanks,
Aaron
