src/patches/0001-Add-support-for-compressing-firmware-in-copy-firmwar.patch

   1 From 7eec2b56f54c778d5bd6e7aea49ee03e3b76e769 Mon Sep 17 00:00:00 2001
   2 From: Peter Robinson <pbrobinson@gmail.com>
   3 Date: Fri, 22 Jan 2021 20:36:23 +0000
   4 Subject: [PATCH v2] Add support for compressing firmware in copy-firmware.sh
   5
   6 As of kernel 5.3 there's initial support for loading compressed firmware.
   7 At this stage the only supported compression methis is "xz -C crc32" but
   8 this option brings significant benefits.
   9
  10 Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
  11 ---
  12
  13 v2: quote filename for xz command
  14
  15  Makefile         |  4 ++++
  16  copy-firmware.sh | 47 +++++++++++++++++++++++++++++++----------------
  17  2 files changed, 35 insertions(+), 16 deletions(-)
  18
  19 diff --git a/Makefile b/Makefile
  20 index e1c362f..9a48471 100644
  21 --- a/Makefile
  22 +++ b/Makefile
  23 @@ -11,3 +11,7 @@ check:
  24  install:
  25         mkdir -p $(DESTDIR)$(FIRMWAREDIR)
  26         ./copy-firmware.sh $(DESTDIR)$(FIRMWAREDIR)
  27 +
  28 +installcompress:
  29 +       mkdir -p $(DESTDIR)$(FIRMWAREDIR)
  30 +       ./copy-firmware.sh -C $(DESTDIR)$(FIRMWAREDIR)
  31 diff --git a/copy-firmware.sh b/copy-firmware.sh
  32 index 9b46b63..0dd2e5c 100755
  33 --- a/copy-firmware.sh
  34 +++ b/copy-firmware.sh
  35 @@ -6,6 +6,7 @@
  36
  37  verbose=:
  38  prune=no
  39 +compress=no
  40
  41  while test $# -gt 0; do
  42      case $1 in
  43 @@ -19,6 +20,11 @@ while test $# -gt 0; do
  44              shift
  45              ;;
  46
  47 +        -C | --compress)
  48 +            compress=yes
  49 +            shift
  50 +            ;;
  51 +
  52          *)
  53              if test "x$destdir" != "x"; then
  54                  echo "ERROR: unknown command-line options: $@"
  55 @@ -31,40 +37,49 @@ while test $# -gt 0; do
  56      esac
  57  done
  58
  59 +if test "x$compress" = "xyes"; then
  60 +    cmpxtn=.xz
  61 +    grep '^File:' WHENCE | sed -e's/^File: *//g' -e's/"//g' | while read f; do
  62 +       test -f "$f" || continue
  63 +       $verbose "compressing $f"
  64 +       xz -C crc32 "$f"
  65 +    done
  66 +fi
  67 +
  68  grep '^File:' WHENCE | sed -e's/^File: *//g' -e's/"//g' | while read f; do
  69 -    test -f "$f" || continue
  70 -    $verbose "copying file $f"
  71 -    mkdir -p $destdir/$(dirname "$f")
  72 -    cp -d "$f" $destdir/"$f"
  73 +    test -f "$f$cmpxtn" || continue
  74 +    $verbose "copying file $f$cmpxtn"
  75 +    mkdir -p $destdir/$(dirname "$f$cmpxtn")
  76 +    cp -d "$f$cmpxtn" $destdir/"$f$cmpxtn"
  77  done
  78
  79  grep -E '^Link:' WHENCE | sed -e's/^Link: *//g' -e's/-> //g' | while read f d; do
  80 -    if test -L "$f"; then
  81 -        test -f "$destdir/$f" && continue
  82 -        $verbose "copying link $f"
  83 -        mkdir -p $destdir/$(dirname "$f")
  84 +    if test -L "$f$cmpxtn"; then
  85 +        test -f "$destdir/$f$cmpxtn" && continue
  86 +        $verbose "copying link $f$cmpxtn"
  87 +        mkdir -p $destdir/$(dirname "$f$cmpxtn")
  88          cp -d "$f" $destdir/"$f"
  89
  90          if test "x$d" != "x"; then
  91 -            target=`readlink "$f"`
  92 +            target=`readlink "$f$cmpxtn"`
  93
  94              if test "x$target" != "x$d"; then
  95                  $verbose "WARNING: inconsistent symlink target: $target != $d"
  96              else
  97                  if test "x$prune" != "xyes"; then
  98 -                    $verbose "WARNING: unneeded symlink detected: $f"
  99 +                    $verbose "WARNING: unneeded symlink detected: $f$cmpxtn"
 100                  else
 101 -                    $verbose "WARNING: pruning unneeded symlink $f"
 102 -                    rm -f "$f"
 103 +                    $verbose "WARNING: pruning unneeded symlink $f$cmpxtn"
 104 +                    rm -f "$f$cmpxtn"
 105                  fi
 106              fi
 107          else
 108 -            $verbose "WARNING: missing target for symlink $f"
 109 +            $verbose "WARNING: missing target for symlink $f$cmpxtn"
 110          fi
 111      else
 112 -        $verbose "creating link $f -> $d"
 113 -        mkdir -p $destdir/$(dirname "$f")
 114 -        ln -sf "$d" "$destdir/$f"
 115 +        $verbose "creating link $f$cmpxtn -> $d$cmpxtn"
 116 +        mkdir -p $destdir/$(dirname "$f$cmpxtn")
 117 +        ln -sf "$d$cmpxtn" "$destdir/$f$cmpxtn"
 118      fi
 119  done
 120
 121 --
 122 2.29.2
 123