Date: Wed, 25 Oct 2017 15:30:20 +0000 (UTC) From: Warner Losh <imp@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r324983 - in head: lib/libc/sys sys/sys Message-ID: <201710251530.v9PFUKoA018217@repo.freebsd.org>
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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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