topic Board bring up in i.MX Processors

Board bring up

ullasbharadwaj — Wed, 04 Jan 2017 11:41:58 GMT

Hello,

I am working with i.MX 6 Solo X Sabre SD board and trying to bring up the board using custom built kernel, u-boot and RFS(with Buildroot).

1. Where can we get the sources of MBR (Stage 1 Bootloader) ?

2. I need to know how to add commands to U-boot shell Ex: bootaux (codes are available, viz bootaux.c etc) since I am not aware of U-boot compilation.

Thanks.

Re: Board bring up

CarlosCasillas — Thu, 05 Jan 2017 01:32:14 GMT

Hi Ullas,

You could take as reference Chapter 4 “Yocto Project Setup” and Chapter 5 “Image Build” of the “i.MX Yocto Project User's Guide” document for building a minimal image to boot the i.MX and then mounting a different Root File System.

Additionally, you could take a look at the following Community document, which implements something similar to your request (building to a different board):

https://community.nxp.com/docs/DOC-332807

Hope this will be useful for you.
Best regards!
/Carlos
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Re: Board bring up

ullasbharadwaj — Thu, 19 Jan 2017 04:51:17 GMT

Hello Carlos,

Thank you so much for the response.

Currently I am using yocto for images of Linux Kernel, U-Boot and RFS. But i wanted to know how can I get my hands on the sources of Bootstrap code. This is in concern if I want to use a custom board and I need to change my bootstrap parameters.