Changes for page Openwrt Notes

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• Page properties (2 modified, 0 added, 0 removed)

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Title

...	...	@@ -1,1 +1,1 @@
1		-Openwrt Notes
	1	+Openwrt Boot Notes

Content

...	...	@@ -6,45 +6,15 @@
6	6
7	7	/init is a script which sets INITRAMFS=1 and then execs /sbin/init.
8	8
9		-/sbin/init is ELF comes from procd package. What it does (as pid=1):
	9	+/sbin/init is ELF comes from procd package. What it does:
10	10
11		-* early (different from procd early):
	11	+* early:
12	12	** mount /proc, /sysfs, and create /dev nodes, create /tmp subdirs etc
13	13	** set PATH
14		-* kmodloader in subprocess (waits until done)
	14	+* kmodloader in subprocess
15	15	* preinit
16	16	** plugd in subprocess (seem to deal with firmware)
17	17	** /etc/preinit in subprocess
18		-* when /etc/preinit is done then it execvp the "real" /sbin/procd
	18	+* when /etc/preinit is done then it execs and replaces itself with the "real" /sbin/procd
19	19
20		-
21		-procd states:
22		-
23		-* early (first state):
24		-** coldplug (remount /dev, etc)
25		-*** start udevtrigger in subproc
26		-*** when udevtrigger completes, hotplug
27		-*** when hotplug completes, next state (ubus)
28		-* ubus:
29		-** start attempts to connect to ubs
30		-** start ubus as service
31		-** once connection's done then next state (init)
32		-* init - read /etc/inittab and run:
33		-** respawn - things that need to keep rerunning once quitted
34		-** askconsole
35		-** askfirst - the "Press Enter to activate this console" message
36		-** sysinit - (usually /etc/init.d/rcS with S) and then next state (running)
37		-* running - waits for shutdown signal (usr1/usr2) or reboot (int/term)
38		-* shutdown
39		-** runs shutdown command per inittab (also /etc/init.d/rcS but with K)
40		-** when done next state (halt)
41		-* halt - kill everything and either enter sleep loop or reboots
42		-
43		-
44		-
45		-
46		-= Debian =
47		-
48		-Needs devtmpfs in kernel (this seem to be first thing that /sbin/init does.
49		-
50	50