svn commit: r324983 - in head: lib/libc/sys sys/sys
Warner Losh
imp at FreeBSD.org
Wed Oct 25 15:30:21 UTC 2017
Author: imp
Date: Wed Oct 25 15:30:20 2017
New Revision: 324983
URL: https://svnweb.freebsd.org/changeset/base/324983
Log:
Define RB_POWERCYCLE
RB_POWERCYCLE instructs the platform to power off and then power back
on a short time later, if that's possible. Otherwise, degrade to the
RB_POWEROFF behavior.
Sponsored by: Netflix
Modified:
head/lib/libc/sys/reboot.2
head/sys/sys/reboot.h
Modified: head/lib/libc/sys/reboot.2
==============================================================================
--- head/lib/libc/sys/reboot.2 Wed Oct 25 15:28:05 2017 (r324982)
+++ head/lib/libc/sys/reboot.2 Wed Oct 25 15:30:20 2017 (r324983)
@@ -28,7 +28,7 @@
.\" @(#)reboot.2 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
-.Dd September 18, 2015
+.Dd October 24, 2017
.Dt REBOOT 2
.Os
.Sh NAME
@@ -84,6 +84,14 @@ for more information.
.It Dv RB_HALT
The processor is simply halted; no reboot takes place.
This option should be used with caution.
+.It Dv RB_POWERCYCLE
+After halting, the shutdown code will do what it can to turn
+off the power and then turn the power back on.
+This requires hardware support, usually an auxiliary microprocessor
+that can sequence the power supply.
+At present only the
+.Xr ipmi 4
+driver implements this feature.
.It Dv RB_POWEROFF
After halting, the shutdown code will do what it can to turn
off the power.
Modified: head/sys/sys/reboot.h
==============================================================================
--- head/sys/sys/reboot.h Wed Oct 25 15:28:05 2017 (r324982)
+++ head/sys/sys/reboot.h Wed Oct 25 15:30:20 2017 (r324983)
@@ -60,6 +60,7 @@
#define RB_RESERVED2 0x80000 /* reserved for internal use of boot blocks */
#define RB_PAUSE 0x100000 /* pause after each output line during probe */
#define RB_REROOT 0x200000 /* unmount the rootfs and mount it again */
+#define RB_POWERCYCLE 0x400000 /* Power cycle if possible */
#define RB_MULTIPLE 0x20000000 /* use multiple consoles */
#define RB_BOOTINFO 0x80000000 /* have `struct bootinfo *' arg */
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