topic Re: Can we replace u-boot with my own customized bootloader ? What is the role of hab.c ,soc.c.. in u-boot? in i.MX Processors

Can we replace u-boot with my own customized bootloader ? What is the role of hab.c ,soc.c.. in u-boot?

dhanunjaykatta — Fri, 25 Sep 2015 04:54:12 GMT

Hi,

We are currently working on Secure boot implementation for Imx6 device using HAB library. In this implementation, we have some initial phase quaries below:

Can we replace u-boot with my own customized bootloader ? What is the role of hab.c ,soc.c.. in u-boot?

If it’s possible to implement secure boot with customized bootloader, what kind of changes need to do to authenticate bootloader by the BOOTROM?.

In this project bootloader will load next stage images like RTOS kernel.

Can you please support on this.

--- Thanks & Regards,

Dhanu

Re: Can we replace u-boot with my own customized bootloader ? What is the role of hab.c ,soc.c.. in u-boot?

Yuri — Tue, 29 Sep 2015 07:20:24 GMT

Hello,

Generally, U-boot can be used just as an example for HAB approach. For HAB details,

please refer to app note AN4581 "Secure Boot on i.MX50, i.MX53, and i.MX 6 Series
using HABv4", “HAB Code-Signing Tool User’s Guide” and HAB API description in CST tool

package.

http://cache.freescale.com/files/32bit/doc/app_note/AN4581.pdf

http://www.freescale.com/webapp/sps/download/mod_download.jsp?colCode=IMX_CST_TOOL&appType=moderatedWithoutFAE&fsrch=1&sr=1&Parent_nodeId=from%20search&Parent_pageType=from%20search&Parent_nodeId=from%20search&Parent_pageType=from%20search&Parent_nodeId=130944735862672766C73F&Parent_pageType=overview

Also, the following may be useful :

“Mx6 HAB (High Assurance Boot)”

https://community.freescale.com/docs/DOC-96451

Have a great day,
Yuri

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: Can we replace u-boot with my own customized bootloader ? What is the role of hab.c ,soc.c.. in u-boot?

dhanunjaykatta — Fri, 29 Jan 2016 07:17:22 GMT

Hi Yuri,

I am unable to access the below link:

[warning message: Access to this place or content is restricted. If you think this is a mistake, please contact your administrator or the person who directed you here.]

https://community.freescale.com/docs/DOC-96451

can you please give access to this & secure boot related forums.

Thanks,

Dhanu

Re: Can we replace u-boot with my own customized bootloader ? What is the role of hab.c ,soc.c.. in u-boot?

Yuri — Fri, 29 Jan 2016 08:36:51 GMT

Hello,

This is internal link. You may create request as shown below in order

to send You copy of this Web.

1)	Please open www.nxp.com
2)	On the top level menu, select Support > Sales and Support (http://www.nxp.com/support/sales-and-support:SUPPORTHOME).
3)	On the bottom of the page, select Hardware & Software.
4)	Register with your business email to access the technical NXP online support.
5)	A verification email will be sent to your account. Click the embedded link to verify your access.
6)	On the NXP online support page, select Contact Support from the top menu and click “submit a new case” to start the process.

Regards,

Yuri.