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

[Pendem]

Hi @Chavira I was trying to load the hello_world.bin from MCUXpresso SDK in cortex A35 in imx8qxpMEK board to enable the M4 , but I was facing issue like Auxiliary core is already up

As soon the u-boot comes up the M4 is also up, So as it is already up I cannot able to load another to make it run.
I guess i am missing something initially, Help me on this.