What is the impact from SDP_DISABLE bit in boot fuse

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What is the impact from SDP_DISABLE bit in boot fuse

88 Views
tkwon_werfen
Contributor II

Hello,

In a new revision of IMX6 chip, a feature has been introduced to blow 'SDP_DIABLE' and 'SDP_READ_DISABLE' in boot fuse register, address of 0x460.

I would like to know what is the impact of this new feature on Android Platform SW?

Does it mean that we cannot use MfgTools anymore if we blow the feature ?

 

Thanks,

Taehyuk

 

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4 Replies

54 Views
tkwon_werfen
Contributor II

Hi Igor,

Thanks for your answer.

Does it mean that even going from the u-boot to Mfg download mode does not work ?

Thanks,

Taehyuk

 

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igorpadykov
NXP TechSupport
NXP TechSupport

yes.

 

Best regards
igor

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Taehyuk

 

those fuses were added to enhance security (so MfgTools can not be used)

SDP_DISABLE : DIsable SDP mode completely
SDP_READ_DISABLE : DIsable only READS in SDP

 

Best regards
igor

51 Views
tkwon_werfen
Contributor II

Hi Igor,

Thanks for your answer.

Does it mean that even going from the u-boot to Mfg download mode does not work ?

Thanks,

Taehyuk

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