Changes for page Openwrt Notes
Last modified by Leon Poon on 2019/11/02 17:53
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... ... @@ -1,1 +1,1 @@ 1 -Openwrt Notes 1 +Openwrt Boot Notes - Content
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... ... @@ -8,7 +8,7 @@ 8 8 9 9 /sbin/init is ELF comes from procd package. What it does (as pid=1): 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 14 * kmodloader in subprocess (waits until done) ... ... @@ -17,40 +17,4 @@ 17 17 ** /etc/preinit in subprocess 18 18 * when /etc/preinit is done then it execvp the "real" /sbin/procd 19 19 20 -procd states: 21 - 22 -* early (first state): 23 -** coldplug (remount /dev, etc) 24 -*** start udevtrigger in subproc 25 -*** when udevtrigger completes, hotplug 26 -*** when hotplug completes, next state (ubus) 27 -* ubus: 28 -** start attempts to connect to ubs 29 -** start ubus as service 30 -** once connection's done then next state (init) 31 -* init - read /etc/inittab and run: 32 -** respawn - things that need to keep rerunning once quitted 33 -** askconsole 34 -** askfirst - the "Press Enter to activate this console" message 35 -** sysinit - (usually /etc/init.d/rcS with S) and then next state (running) 36 -* running - waits for shutdown signal (usr1/usr2) or reboot (int/term) 37 -* shutdown 38 -** runs shutdown command per inittab (also /etc/init.d/rcS but with K) 39 -** when done next state (halt) 40 -* halt - kill everything and either enter sleep loop or reboots 41 - 42 - 43 -= Debian = 44 - 45 -Needs devtmpfs in kernel. This seem to be first thing that /sbin/init does. (Maybe systemd specific.) 46 - 47 -{{code}} 48 -mkdir -pv /mnt/debian && mknod /dev/sda b 8 0 && cryptsetup open /dev/sda usb && vgchange -ay vol_grp1 && mount /dev/vol_grp1/logical_vol1 /mnt/debian 49 -exec switch_root /mnt/debian /sbin/init 50 -{{/code}} 51 - 52 -{{code}} 53 -ip addr add dev eth0 $IP/$NM 54 -ip route add default via $GW 55 -{{/code}} 56 56