Show ## Auxiliary core is already up when run m4boot_0 in boot command line

[wang12zhe]

HW:IMX8QM MEK

Yocto: L5.10.52

When I try to run m4boot_0  in uboot ,I got below output:

=> run m4boot_0
8664 bytes read in 4 ms (2.1 MiB/s)
## Auxiliary core is already up
=>

I can't find any output after run m4boot_0 , So I think M4 firmware not start, 

How start M4 firmware when run   m4boot_0  ?

[Chavira]

Hi @wang12zhe !

The iMX8QM has a different way of getting up the M core.

Please check our "Getting started with MCUXpresso" in chapter 6.1 "!Run an example application on one of the two M4 cores" and "Linux User guide" in chapter 4.5.13 "How to build imx-boot image by using imx-mkimage" in those chapters explains how to build and image for the board an run your code on the
M core

https://www.nxp.com/docs/en/user-guide/IMX_LINUX_USERS_GUIDE.pdf

Best Regards!
Chavira