TMS320F28075: TMS320F28075 .out file modifications

sandeep chavan

Part Number: TMS320F28075

Hello Team,

is it possible to modify data in .out file ?

we have to add checksum of whole firmware inside the .out file of firmware.

In one of the sectors of flash we have to store this checksum of firmware, which will be used by boot loader code to verify firmware and jump to that firmware.

Please guide in this.

Regards,

Sandeep

over 6 years ago

0 Lori Heustess over 6 years ago

TI__Guru* 92010 points

Sandeep,

The C28x compiler has the ability to embed a CRC for load sections you specify into your out file. The CRC polynomials are fixed, though, so your check algo would need to change to use the same polynomial.

This feature is documented in www.ti.com/lit/spru513 (assembly tools reference guide). Refer to the section on linker generated CRC tables.

You may also find the following blog post useful:

https://e2e.ti.com/blogs_/archives/b/toolsinsider/archive/2017/02/27/from-the-experts-perform-cyclic-redundancy-checking-using-linker-generated-crc-tables

There is also quite a few posts on the subject for your reference.

https://www.google.com/search?q=linker+generated+crc+site:e2e.ti.com

Regards,

Lori

0 Lori Heustess over 6 years ago in reply to Lori Heustess

TI__Guru* 92010 points

Hi Sandeep,

I haven’t heard from you for about a week, so I’m assuming you were able to resolve your issue. If so, please click the green "verified answer" button.

If this isn’t the case, please click the "This did NOT resolve my issue" button and reply to this thread with more information.

If this thread locks, please click the "Ask a related question" button and in the new thread describe the current status of your issue and any additional details you may have to assist us in helping to solve your issues.

Regards,
Lori

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TMS320F28075: TMS320F28075 .out file modifications