topic Re: Issue reading registers in u-boot in Other NXP Products

Issue reading registers in u-boot

Ghouse — Thu, 02 Jun 2022 12:43:12 GMT

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.

Ghouse — Tue, 07 Jun 2022 11:58:33 GMT

Hi, any help for the above query?

Thanks.

yipingwang — Thu, 09 Jun 2022 03:17:41 GMT

Please use the following command.

=> md 0x1e90014

tdemke — Thu, 04 Aug 2022 13:43:50 GMT

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?

John_volvo — Fri, 14 Jun 2024 02:47:48 GMT

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