Programming SJC_DISABLE, JTAG_SMODE and JTAG_HEO fuses on iMX8MM

取消
显示结果 
显示  仅  | 搜索替代 
您的意思是: 
已解决

Programming SJC_DISABLE, JTAG_SMODE and JTAG_HEO fuses on iMX8MM

跳至解决方案
4,671 次查看
rodrigo_travess
Contributor I

Hello,

At the AN4581 Application Note section 5.7 it is recommended to program the SJC_DISABLE, JTAG_SMODE and JTAG_HEO fuses to completely secure the device, but looking at both the IMX8MMRM and IMX8MMSRM, I wasn't able to find the exact location of those fuses (bank, word, bit). Where can I find this information?

Thank you!

0 项奖励
回复
1 解答
4,654 次查看
igorpadykov
NXP Employee
NXP Employee

Hi rodrigo_travess

 

additional info were sent via mail.

 

Best regards
igor

在原帖中查看解决方案

0 项奖励
回复
9 回复数
1,266 次查看
tsmt
Contributor II

We also would like to have this information.

0 项奖励
回复
4,035 次查看
jxb4256
Contributor II

Can you also share this with me, please? Why isn't this just posted in a public app note, or the reference manual or security reference manual? Security through obscurity is not security.

4,530 次查看
stephanwächter
Contributor I

We also want to disable JTAG on the imx8m-mini and I couldn't find any info of about it in Reference Manual, Rev. 2, 08/2019 Chapter 6.2 Fusemap. Could you also point me into the right direction.

Thank you!

0 项奖励
回复
4,655 次查看
igorpadykov
NXP Employee
NXP Employee

Hi rodrigo_travess

 

additional info were sent via mail.

 

Best regards
igor

0 项奖励
回复
403 次查看
dj_RS
Contributor I

Hi @igorpadykov ,

I would appreciate if you could send me this information as well.

Thanks in advance

Dj

0 项奖励
回复
1,158 次查看
emmanuel_madrigal
Contributor I

Hi,

 

Would it be possible for you to send me this information as well?

 

Also is this diifferent between an imx8m nano  and a mini?

0 项奖励
回复
2,627 次查看
jbruno79
Contributor I

hi @igorpadykov,

I need information about the fuses for the imx8m mini. Could you be so kind to provide it to me? I need to disable the JTAG for security reasons.

Best regrads,

Julián

0 项奖励
回复
3,124 次查看
johneubanks
Contributor I

@igorpadykov could you also send me the info for the JTAG_HEO fuse?
Thanks!

0 项奖励
回复
4,369 次查看
paul_geurts
Contributor III

Could you make this email public information? Why is this information not listed in the security reference manual? For the i.MX8M Nano this is listed in the security reference manual. But I cannot know whether the Mini uses the same fuses.

Also, AN4581 also lists fuse DIR_BT_DIS to be of interest. But I cannot find any reference of it.

0 项奖励
回复