Where CM4_ALIAS_CODE alias DDR?

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Where CM4_ALIAS_CODE alias DDR?

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Takashi_Kashiwagi
Senior Contributor I

Hi Community.

I saw RM and noticed. CM4F core in IMX8MM has CM4 ALIAS Code Region(262016KB). 

pastedImage_1.png

I want to kown which DDR area does map the CM4 ALIAS Code.

Now, Our firmware is running on DDR(0x7F000000 - 0x80000000). 

Can this be mapped to 0x10000000-?

--

By the way, breakpoints in the debugger are behaving strangely, as in the next thread.

https://community.nxp.com/message/1254243?commentID=1254243#comment-1254243 

Best Regards,

T.Kashiwagi

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Takashi

 

yes alias is fixed.

Corrected:

 

As answered on other post the alias maps to 0x40000000.

So  "correct answer" on this post was changed.

Thanks  Renato !

 

Best regards
igor

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5 Replies
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Takashi_Kashiwagi
Senior Contributor I

Hi Igor-san

Thank you.....

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Takashi

seems it is aliased to 8000_0000 - 8FFE_FFFF.

I am afraid it is not possible to remap to 0x10000000.

Best regards
igor
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nxf56472
NXP Employee
NXP Employee

Hello @igorpadykov ,

According to your other post the alias maps to 0x40000000.

Please fix the "correct answer" on this post.

Thanks!

Renato

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Takashi_Kashiwagi
Senior Contributor I

Hi Igor-san

Thank you for reply.

seems it is aliased to 8000_0000 - 8FFE_FFFF.

I am afraid it is not possible to remap to 0x10000000.

Is this aliased address(8000_0000 - 8FFE_FFFF) really fixed?  

Our SoM has only 1GB Memory(0x40000000 - 0x7FFFFFFF)........

Best Regards,

T.Kashiwagi

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Takashi

 

yes alias is fixed.

Corrected:

 

As answered on other post the alias maps to 0x40000000.

So  "correct answer" on this post was changed.

Thanks  Renato !

 

Best regards
igor