Reset Timing of Boot Retry Count

[KevinFFF]

You could run the following command to check the retry count, which is derived from scratch register.

$ nvbootctrl -t rootfs dump-slots-info

@koichi.tanoiri

What I am more concerned about are the finer details, specifically regarding the countdown for retries and the timing for resetting the count.

Let me share the logic for retry count as following:

1. boot up to L4TLauncher → initialize the retry_count
   a. if cold boot: retry_count=MAX
   b. if warm boot: retry_count=value in Scratch register
2. retry_count-- (in Scratch register) in L4TLauncher
3. boot to kernel successfully, the background service<nv-l4t-bootloader-config.service> clear the retry_count value in Scratch register

@koichi.tanoiri

would turning the power OFF/ON during the interval from countdown to startup advance the count?

If you perform power off during boot up, it is the case as cold boot so that it will configure the retry_count to MAX.