sysutils/cpu-microcode: bring back late loading during early boot stage

Although the situation is different on 26.7/15.1 it still affects most
people trying to use microcode packages.

PR: https://forum.opnsense.org/index.php?topic=52387.0

Author: fichtner

sysutils/cpu-microcode/Makefile

@@ -1,5 +1,6 @@
 PLUGIN_NAME=		cpu-microcode-amd
 PLUGIN_VERSION=		1.1
+PLUGIN_REVISION=	1
 PLUGIN_COMMENT=		CPU microcode updates
 PLUGIN_DEPENDS=		x86info
 PLUGIN_MAINTAINER=	franco@opnsense.org

sysutils/cpu-microcode/src/etc/rc.loader.d/40-cpu-microcode.in

@@ -1,2 +1,8 @@
-cpu_microcode_load="YES"
-cpu_microcode_name="/boot/firmware/%%PLUGIN_VARIANT%%-ucode.bin"
+# If you want to use early loading make sure your bootloader code is updated
+# using a 26.7/15.1 build.  Earlier kernels may cause boot stalls while it
+# tries to load microcode updates.
+#
+# Add the following lines to /boot/loader.conf.local if you prefer early load:
+#
+# cpu_microcode_load="YES"
+# cpu_microcode_name="/boot/firmware/%%PLUGIN_VARIANT%%-ucode.bin"

sysutils/cpu-microcode/src/etc/rc.syshook.d/early/40-cpu-microcode

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+export microcode_update_enable="YES"
+
+/usr/local/etc/rc.d/microcode_update start