MSPM0G3507: how to add crc32 in the secondary bsl

greg she

Part Number: MSPM0G3507

Tool/software:

How to add CRC32 verification for firmware upgrades? I want to incorporate CRC32 verification as the final step in the upgrade process. Only if the verification is correct, the system can proceed to jump to the application to run. This measure is intended to prevent the firmware file from being corrupted, which could lead to erroneous upgrades and render the device unable to function or be upgraded properly.

over 1 year ago

0 Cash Hao11 over 1 year ago

TI__Mastermind 45685 points

Hi,

So, a secondary BSL is an option for you. You can add your own protocol in the boot code like CRC32 verification.

There are demo code in the SDK. Please find it and you can add CRC function in it.

Best regards,

Cash Hao

0 greg she over 1 year ago in reply to Cash Hao11

Prodigy 45 points

Hi,

I noticed that the MSPM0 Bootloader GUI has a GET_CRC feature. If the CRC result obtained from here is added to the upgrade file, and the CRC is checked before the upgrade finishes, or how to generate an upgrade file with CRC, and check the CRC result before the upgrade finishes.

0 Cash Hao11 over 1 year ago in reply to greg she

TI__Mastermind 45685 points

Hi,

I do not understand your question. Can you explain it with more information?

Best regards,

Cash Hao

0 greg she over 1 year ago in reply to Cash Hao11

Prodigy 45 points

Hi,

I want to include the calculation of the CRC32 value for the entire upgrade file in the generated upgrade file. Then, during the last step of the secondary BSL upgrade process, compute the CRC32 value of the application portion in flash and compare it to the value in the upgrade file. Both values must match before proceeding to jump to the application to execute.

0 Cash Hao11 over 1 year ago in reply to greg she

TI__Mastermind 45685 points

Okay, so your question is how to get the CRC32 value for the application portion data?

Best regards,

Cash Hao

+1 greg she over 1 year ago in reply to Cash Hao11

Prodigy 45 points

Yes, I currently have the ability to retrieve the CRC32 calculation value from the upgrade file, but I am uncertain about how to obtain the CRC32 calculation value for the application portion in flash.

+1 Cash Hao11 over 1 year ago in reply to greg she

TI__Mastermind 45685 points

Hi,

There is a function called BSL_CI_calculateCRC() which can be used to get the CRC32 value.

/* Compute the CRC for the given range */
result = BSL_CI_calculateCRC((uint8_t *) addrStart, length);

Best regards,

Cash Hao

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MSPM0G3507: how to add crc32 in the secondary bsl