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PROCESSOR-SDK-AM64X: what is the diffrence bettween tiboot3-am62x-hs-evm.bin and tiboot3-am62x-hs-fs-evm.bin?

Part Number: PROCESSOR-SDK-AM64X

Tool/software:

Dear supporter,

I noticed that both tiboot3-am62x-hs-evm.bin and tiboot3-am62x-hs-fs-evm.bin are signed with custMpk.pem.

I have a few questions:
1. Since the hsfs device does not write custMpk related information to otp, why does tiboot3-am62x-hs-fs-evm.bin use custMpk.pem to sign?
2. The only difference between tiboot3-am62x-hs-evm.bin and tiboot3-am62x-hs-fs-evm.bin is that ti-fs-enc.bin and sysfw-inner-cert are different. What is the difference between the two files of fs and se?

  • Hello,

    1) There is no specific reason to sign the HSFS images with `custMpk.pem`. If required, you may sign the HSFS images with any random key.

    2) The SYSFW binaries are different for HSFS & HSSE devices & so there are different `tiboot3.bin` image for different device types.