how to let i.mx8 boot by cortex m4 only?

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how to let i.mx8 boot by cortex m4 only?

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monosail
Contributor I

I want to test ddr4 chip by i.mx8m mini, because it has a ddr4 controller.

Here is my plan:

1. Run a cortex-m4 program on TCM to access ddr4 controller ( I cannot use linux because ddr4 dram is not available, I need ddr4 interface for testing the ddr4 chip).

2. Do not use cortex-a53 core.

 

And my question is: how can I boot the cortex-m4 directly (do not start cortex-a53)?

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igorpadykov
NXP Employee
NXP Employee

Hi Mono

 

>my question is: how can I boot the cortex-m4 directly (do not start cortex-a53)?

 

I am afraid it is not possible as i.MX8M Mini boots only from cortex-a53.

 

Best regards
igor

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monosail
Contributor I

Thank you! And I think I need to modify u-boot code to implement my ddr test function...

Where can I download the source code of u-boot for i.mx8 ?

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