From: Igor Opaniuk igor.opaniuk@toradex.com This introduces automatic boot counter that increases after every reset.After a power-on reset, it will be initialized with 1, and each reboot will increment the value by 1. By default it's disabled if bootlimit isn't set. To enable this feature you have set bootcount limit ("bootlimit"), alternate boot action ("altbootcmd") that will be performed if the new value of bootcount exceeds the value of bootlimit, and "upgrade_available" to let U-Boot automatically increase and save the counter value after every reset:
setenv bootlimit 5 setenv upgrade_available 1 setenv altbootcmd "bootm ..."
In case the bootlimit exceeds, the message will be shown and albootcmd executed: Warning: Bootlimit (5) exceeded. Using altbootcmd. To reset bootcount run:
bootcount reset
Print current value:
bootcount print
Signed-off-by: Igor Opaniuk igor.opaniuk@toradex.com
Applied to u-boot-imx, master, thanks !
Best regards, Stefano Babic