intel_microcode: copy the current cpu microcode in non-packaged

the boot loader can then pick and load the microcode on the next boot

sys-firmware/intel-microcode/additional-files/intel_copy_microcode.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+dataDir=`finddir B_SYSTEM_DATA_DIRECTORY`/firmware/intel-ucode
+targetDir=`finddir B_SYSTEM_NONPACKAGED_DATA_DIRECTORY`/firmware/intel-ucode
+mkdir -p $targetDir
+cpuinfo=$(sysinfo -cpu | grep -oE 'family [[:digit:]]+, model [[:digit:]]+, stepping [[:digit:]]+' | uniq | sed -e 's/[^0-9]\+/ /g' -e 's/^ //')
+microcodeFile=$(printf '%02x-%02x-%02x\n' $cpuinfo)
+cp -p $dataDir/$microcodeFile $targetDir
+true

sys-firmware/intel-microcode/intel_microcode-20240312.recipe

@@ -7,14 +7,17 @@ using the system BIOS, but for a subset of Intel's processors this can be done\
 HOMEPAGE="https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/"
 COPYRIGHT="2018-2024 Intel Corporation"
 LICENSE="Intel CPU Microcode"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/archive/microcode-$portVersion.tar.gz"
 SOURCE_DIR="Intel-Linux-Processor-Microcode-Data-Files-microcode-$portVersion"
 CHECKSUM_SHA256="9575c6d74491058bbf998c359d7f25f23655d97a31663a8ed6a98def2b0aaf2b"
+ADDITIONAL_FILES="intel_copy_microcode.sh"
 
 ARCHITECTURES="any"
 DISABLE_SOURCE_PACKAGE="yes"
 
+POST_INSTALL_SCRIPTS="$relativePostInstallDir/intel_copy_microcode.sh"
+
 PROVIDES="
 	intel_microcode = $portVersion
 	"
@@ -23,4 +26,8 @@ INSTALL()
 {
 	mkdir -p $dataDir/firmware/intel-ucode
 	cp intel-ucode{,-with-caveats}/* $dataDir/firmware/intel-ucode/
+
+	# install postinstallscript
+	mkdir -p $postInstallDir
+	install -t $postInstallDir $portDir/additional-files/intel_copy_microcode.sh
 }