Index: head/stand/defaults/loader.conf.5 =================================================================== --- head/stand/defaults/loader.conf.5 +++ head/stand/defaults/loader.conf.5 @@ -23,7 +23,7 @@ .\" SUCH DAMAGE. .\" .\" $FreeBSD$ -.Dd March 23, 2018 +.Dd August 28, 2018 .Dt LOADER.CONF 5 .Os .Sh NAME @@ -289,6 +289,29 @@ .Pq Dq /boot/entropy The name of the very early boot-time entropy cache file. +.It Va cpu_microcode_load +.Pq Dq NO +If set to +.Dq YES , +the microcode update file specified by +.Va cpu_microcode_name +will be loaded and applied very early during boot. +This provides functionality similar to +.Xr cpucontrol 8 +but ensures that CPU features enabled by microcode updates can be +used by the kernel. +The update will be re-applied automatically when resuming from an +ACPI sleep state. +If the update file contains updates for multiple processor models, +the kernel will search for and extract a matching update. +Currently this setting is supported only on Intel +.Dv i386 +and +.Dv amd64 +processors. +It has no effect on other processor types. +.It Va cpu_microcode_name +A path to a microcode update file. .El .Sh OTHER SETTINGS Other settings that may be used in @@ -319,6 +342,7 @@ .Sh SEE ALSO .Xr rc.conf 5 , .Xr boot 8 , +.Xr cpucontrol 8 , .Xr loader 8 , .Xr loader.4th 8 .Sh HISTORY