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From 7eec2b56f54c778d5bd6e7aea49ee03e3b76e769 Mon Sep 17 00:00:00 2001
From: Peter Robinson <pbrobinson@gmail.com>
Date: Fri, 22 Jan 2021 20:36:23 +0000
Subject: [PATCH v2] Add support for compressing firmware in copy-firmware.sh
As of kernel 5.3 there's initial support for loading compressed firmware.
At this stage the only supported compression methis is "xz -C crc32" but
this option brings significant benefits.
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
---
v2: quote filename for xz command
Makefile | 4 ++++
copy-firmware.sh | 47 +++++++++++++++++++++++++++++++----------------
2 files changed, 35 insertions(+), 16 deletions(-)
diff --git a/Makefile b/Makefile
index e1c362f..9a48471 100644
--- a/Makefile
+++ b/Makefile
@@ -11,3 +11,7 @@ check:
install:
mkdir -p $(DESTDIR)$(FIRMWAREDIR)
./copy-firmware.sh $(DESTDIR)$(FIRMWAREDIR)
+
+installcompress:
+ mkdir -p $(DESTDIR)$(FIRMWAREDIR)
+ ./copy-firmware.sh -C $(DESTDIR)$(FIRMWAREDIR)
diff --git a/copy-firmware.sh b/copy-firmware.sh
index 9b46b63..0dd2e5c 100755
--- a/copy-firmware.sh
+++ b/copy-firmware.sh
@@ -6,6 +6,7 @@
verbose=:
prune=no
+compress=no
while test $# -gt 0; do
case $1 in
@@ -19,6 +20,11 @@ while test $# -gt 0; do
shift
;;
+ -C | --compress)
+ compress=yes
+ shift
+ ;;
+
*)
if test "x$destdir" != "x"; then
echo "ERROR: unknown command-line options: $@"
@@ -31,40 +37,49 @@ while test $# -gt 0; do
esac
done
+if test "x$compress" = "xyes"; then
+ cmpxtn=.xz
+ grep '^File:' WHENCE | sed -e's/^File: *//g' -e's/"//g' | while read f; do
+ test -f "$f" || continue
+ $verbose "compressing $f"
+ xz -C crc32 "$f"
+ done
+fi
+
grep '^File:' WHENCE | sed -e's/^File: *//g' -e's/"//g' | while read f; do
- test -f "$f" || continue
- $verbose "copying file $f"
- mkdir -p $destdir/$(dirname "$f")
- cp -d "$f" $destdir/"$f"
+ test -f "$f$cmpxtn" || continue
+ $verbose "copying file $f$cmpxtn"
+ mkdir -p $destdir/$(dirname "$f$cmpxtn")
+ cp -d "$f$cmpxtn" $destdir/"$f$cmpxtn"
done
grep -E '^Link:' WHENCE | sed -e's/^Link: *//g' -e's/-> //g' | while read f d; do
- if test -L "$f"; then
- test -f "$destdir/$f" && continue
- $verbose "copying link $f"
- mkdir -p $destdir/$(dirname "$f")
+ if test -L "$f$cmpxtn"; then
+ test -f "$destdir/$f$cmpxtn" && continue
+ $verbose "copying link $f$cmpxtn"
+ mkdir -p $destdir/$(dirname "$f$cmpxtn")
cp -d "$f" $destdir/"$f"
if test "x$d" != "x"; then
- target=`readlink "$f"`
+ target=`readlink "$f$cmpxtn"`
if test "x$target" != "x$d"; then
$verbose "WARNING: inconsistent symlink target: $target != $d"
else
if test "x$prune" != "xyes"; then
- $verbose "WARNING: unneeded symlink detected: $f"
+ $verbose "WARNING: unneeded symlink detected: $f$cmpxtn"
else
- $verbose "WARNING: pruning unneeded symlink $f"
- rm -f "$f"
+ $verbose "WARNING: pruning unneeded symlink $f$cmpxtn"
+ rm -f "$f$cmpxtn"
fi
fi
else
- $verbose "WARNING: missing target for symlink $f"
+ $verbose "WARNING: missing target for symlink $f$cmpxtn"
fi
else
- $verbose "creating link $f -> $d"
- mkdir -p $destdir/$(dirname "$f")
- ln -sf "$d" "$destdir/$f"
+ $verbose "creating link $f$cmpxtn -> $d$cmpxtn"
+ mkdir -p $destdir/$(dirname "$f$cmpxtn")
+ ln -sf "$d$cmpxtn" "$destdir/$f$cmpxtn"
fi
done
--
2.29.2