Issue reading registers in u-boot

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Issue reading registers in u-boot

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Ghouse
Contributor V

Hi, iam using LS1046ARDB eval board,

An iam working on secure boot,

The procudure to secure boot says : "Verify the SNVS register - HPSR to check whether OTPMK is fused already" by using command md $SNVS_HPSR_REG,

however when i execute above command in u boot iam getting below message

md - memory display

Usage:
md [.b, .w, .l, .q] address [# of objects]

but, when i read register w.r.t address (eg: md 0x01e80254 0x10) iam able to read it.

Let me know the exact syntax to read the register by providing register name in the u-boot console.

Thanks.

 

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yipingwang
NXP TechSupport
NXP TechSupport

Please use the following command.

=> md 0x1e90014

在原帖中查看解决方案

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John_volvo
Contributor I

if OTPMK is fused already, whether can use reset to default value? or need replace chip? 

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Ghouse
Contributor V

Hi, any help for the above query?

Thanks.

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yipingwang
NXP TechSupport
NXP TechSupport

Please use the following command.

=> md 0x1e90014

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tdemke
Contributor I

On my LS1046ardb board:

=> md 0x1e90014
01e90014: 002b0088 00000080 00000000 00000000    ..+.............

This is not inline with the documentation!

=> md $SNVS_HPSR_REG
88000900

So how can we check in u-boot if the OTPMK values are written?

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