AM625: Estimated overall boot time for secure boot authentication

rperezti

Part Number: AM625
Other Parts Discussed in Thread: AM62P

Tool/software:

We need an estimate of AM625 secure boot time, to load and authenticate all boot images and boot to a linux user app. Is this boot time documented some where or can an estimate be provided?

Thanks

1 month ago

+1 Prashant Shivhare 1 month ago

TI__Guru 71551 points

Hello,

If the SBLs from the MCU+ SDK are used to boot to Linux, please see if the following documentation helps:

https://software-dl.ti.com/mcu-plus-sdk/esd/AM62X/11_01_00_16/exports/docs/api_guide_am62x/DATASHEET_AM62X_EVM.html

Regards,

Prashant

0 rperezti 1 month ago in reply to Prashant Shivhare

TI__Genius 12670 points

Prashant this is excellent. I am assuming that the boot times listed on that page represent the loading, authentication, and execution of the 1st and 2nd stage bootloaders, and that additional time is taken for the Linux kernel to boot boot. Can you please confirm or correct this understanding? If my understanding is correct, could you let me know if the Linux kernel boot time has also been measured and documented somewhere?

Thank you

+1 rperezti 1 month ago in reply to rperezti

TI__Genius 12670 points

I found a boot time measurement for the out-of-box SDK kernel build here: https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/11_01_05_03/exports/docs/devices/AM62X/linux/Linux_Performance_Guide.html#boot-time-measurement

+1 rperezti 1 month ago in reply to rperezti

TI__Genius 12670 points

I also found this useful section in the AM62P SDK 11_01_05_03 developer notes: https://software-dl.ti.com/processor-sdk-linux/esd/AM62PX/11_01_05_03/exports/docs/linux/How_to_Guides/Target/How_to_boot_quickly.html# With this, I have all the information I'm looking for so you can close the thread.

One point of feedback to the Sitara SDK team, it would be helpful to have this same information in the AM62x SDK 11_01_05_03 developer notes too.

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AM625: Estimated overall boot time for secure boot authentication