am57xx Demo根文件加载过程

Posted 2021-09-09 毛毛虫的爹

am57xx_env根文件加载过程

1. /etc/inittab

The default runlevel.

id:5:initdefault: /默认启动级别为5/
si::sysinit:/etc/init.d/rcS

What to do in single-user mode.

~~:S:wait:/sbin/sulogin

/etc/init.d executes the S and K scripts upon change of runlevel.

Runlevel 0 is halt；Runlevel 1 is single-user；Runlevels 2-5 are multi-user；Runlevel 6 is reboot.

l0:0:wait:/etc/init.d/rc 0

l1:1:wait:/etc/init.d/rc 1

l2:2:wait:/etc/init.d/rc 2

l3:3:wait:/etc/init.d/rc 3

l4:4:wait:/etc/init.d/rc 4

l5:5:wait:/etc/init.d/rc 5

l6:6:wait:/etc/init.d/rc 6