topic Re: Falcon mode on iMX8QM in i.MX Processors

Falcon mode on iMX8QM

gilmoreat — Mon, 04 Dec 2023 20:13:53 GMT

I am attempting to implement falcon mode on a custom i.MX8QM board following AN13709. However, I am running into an error when attempting to export the fdt. I've attached the error in the file below.

One difference is that I am using a newer version of u-boot and the kernel.

- u-boot = 2023.04-lf_v2023.04

- kernel = 6.1.22

When following the application note, It appears that some of the modification have been integrated into mainline u-boot. Are there some of these modification unnecessary with newer versions of u-boot.

Additionally, is there any meaningful difference between iMX8QM and the iMX8MN in terms of implementing falcon mode?

Re: Falcon mode on iMX8QM

Zhiming_Liu — Tue, 05 Dec 2023 01:20:07 GMT

Please refer AN14093 and it's SW.

https://www.nxp.com.cn/docs/en/application-note/AN14093.pdf

The image assembly method is very different between i.MX8M and i.MX8QM, like container and scfw firmware, but i.MX9 use similiar container.

Re: Falcon mode on iMX8QM

gilmoreat — Thu, 14 Dec 2023 20:29:45 GMT

Thank you for the reply and sorry about the delay. I tried following the instructions for iMX9 adjusted for the iMX8QM. I am getting the following error when booting the new flash:

U-Boot SPL 2023.04-lf_v2023.04+gaf7d004eaf (Jun 06 2023 - 14:59:40 +0000)
Normal Boot
MMC: block number 0x2faf0e5 exceeds max(0x2000)
mmc_load_image_raw_sector: mmc block read error
Primary set selected
Load image from MMC/SD 0x62400

U-Boot 2023.04-lf_v2023.04+gaf7d004eaf (Jun 06 2023 - 14:59:40 +0000)
CPU: NXP i.MX8QM RevB A53 at 1200 MHz at 22C

Are there any notable differences between boot the iMX8QM and the iMX9? Is there somewhere to find the correct address for the ATF Address, Kernel address, etc?