dracut: Generlize microcode early cpio usage

ACPI early table override also may need to place files into an early cpio.
Reflect this in variable and file names.
This change is renaming only and does not introduce any real change.

Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>

dracut.sh

@@ -704,9 +704,9 @@ readonly initdir="$(mktemp --tmpdir="$TMPDIR/" -d -t initramfs.XXXXXX)"
 }
 
 if [[ $early_microcode = yes ]]; then
-    readonly microcode_dir="$(mktemp --tmpdir="$TMPDIR/" -d -t early_microcode.XXXXXX)"
-    [ -d "$microcode_dir" ] || {
-        printf "%s\n" "dracut: mktemp --tmpdir=\"$TMPDIR/\" -d -t early_microcode.XXXXXX failed." >&2
+    readonly early_cpio_dir="$(mktemp --tmpdir="$TMPDIR/" -d -t early_cpio.XXXXXX)"
+    [ -d "$early_cpio_dir" ] || {
+        printf "%s\n" "dracut: mktemp --tmpdir=\"$TMPDIR/\" -d -t early_cpio.XXXXXX failed." >&2
         exit 1
     }
 fi
@@ -715,7 +715,7 @@ trap '
     ret=$?;
     [[ $outfile ]] && [[ -f $outfile.$$ ]] && rm -f -- "$outfile.$$";
     [[ $keep ]] && echo "Not removing $initdir." >&2 || { [[ $initdir ]] && rm -rf -- "$initdir"; };
-    [[ $keep ]] && echo "Not removing $microcode_dir." >&2 || { [[ $microcode_dir ]] && rm -Rf -- "$microcode_dir"; };
+    [[ $keep ]] && echo "Not removing $early_cpio_dir." >&2 || { [[ $early_cpio_dir ]] && rm -Rf -- "$early_cpio_dir"; };
     [[ $_dlogdir ]] && rm -Rf -- "$_dlogdir";
     exit $ret;
     ' EXIT
@@ -1311,7 +1311,7 @@ if [[ $early_microcode = yes ]]; then
     dinfo "*** Generating early-microcode cpio image ***"
     ucode_dir=(amd-ucode intel-ucode)
     ucode_dest=(AuthenticAMD.bin GenuineIntel.bin)
-    _dest_dir="$microcode_dir/d/kernel/x86/microcode"
+    _dest_dir="$early_cpio_dir/d/kernel/x86/microcode"
     _dest_idx="0 1"
     mkdir -p $_dest_dir
     if [[ $hostonly ]]; then
@@ -1331,14 +1331,15 @@ if [[ $early_microcode = yes ]]; then
             fi
         done
     done
-    (cd "$microcode_dir/d"; find . -print0 | cpio --null -o -H newc --quiet >../ucode.cpio)
+    create_early_cpio="yes"
 fi
 
 rm -f -- "$outfile"
 dinfo "*** Creating image file ***"
-if [[ $early_microcode = yes ]]; then
+if [[ $create_early_cpio = yes ]]; then
     # The microcode blob is _before_ the initramfs blob, not after
-    mv $microcode_dir/ucode.cpio $outfile.$$
+    (cd "$early_cpio_dir/d"; find . -print0 | cpio --null -o -H newc --quiet >../early.cpio)
+    mv $early_cpio_dir/early.cpio $outfile.$$
 fi
 if ! ( umask 077; cd "$initdir"; find . -print0 | cpio --null -R 0:0 -H newc -o --quiet| \
     $compress >> "$outfile.$$"; ); then