While working on some SECO features, I have enabled the debug monitor in the SCFW. To my pleasant surprise, the monitor outputs some timing information. This is very important to what we are working on. The output is somewhat obvious as to what it means, but there are no details. My output is:
ROM boot time = 46084 usec
SCFW boot time = 52751 usec
Banner = 10 usec
Init = 10509 usec
Config = 4014 usec
DDR = 14633 usec
SConfig = 3054 usec
Prep = 14862 usec
Is there any documentation as to what exactly is being timed here? We are especially interested in how the first two numbers (ROM boot and SCFW boot times) relate to Figure 2 in "Secure Boot on iMX 8 and iMX 8x Familis using AHAB" application note. Exactly what's happening in each of these timing steps?
Thank you
Hi Stuart
additional details can be found in sect.3.8.1 Standard Boot sc_fw_port.pdf
document included in SCFW Porting Kit
Best regards
igor
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