From: Frank Rowand <frank.rowand@xxxxxxxxxxx>
Convert overlay dts file from hand-coded expanded form to new syntactic
sugar form.
Signed-off-by: Frank Rowand <frank.rowand@xxxxxxxxxxx>
---
overlay_convert | 158 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 158 insertions(+)
create mode 100755 overlay_convert
diff --git a/overlay_convert b/overlay_convert
new file mode 100755
index 000000000000..fede0103fb4e
--- /dev/null
+++ b/overlay_convert
@@ -0,0 +1,158 @@
+#!/usr/bin/perl
+
+# Copyright 2016 Frank Rowand frank.rowand@xxxxxxxxxxx
+# license: GPL V2
+# This file is subject to the terms and conditions of the GNU General Public
+# License v2.
+#
+# Convert overlay dts file from hand-coded expanded form to new syntactic
+# sugar form.
+
+# zzz TODO:
+# - May need to update the "/plugin/" declaration if dtc has changed.
+
+
+use strict 'refs';
+use strict subs;
+
+use Getopt::Long;
+
+$VUFX = "161227a";
+
+$script_name = $0;
+$script_name =~ s|^.*/||;
+
+
+sub usage()
+{
+ print STDERR
+"
+Usage: $script_name [options] DTS
+
+ Convert overlay dts file from hand-coded expanded form to new syntactic
+ sugar form.
+
+ Node names __symbols__, __fixups__, and __local_fixups__ are not allowed.
+ Their presence suggests that DTS has been compiled into a .dtbo and then
+ de-compiled. This is not the preferred form of source since phandle
+ references are not of the form: &label.
+
+Valid options:
+
+ -h Synonym for --help
+ --help Display this message
+ --version Display program version and exit
+
+
+ Return value:
+ 0 no error
+ 1 error processing command line
+ 2 unable to open or read DTS
+ 10 DTS contains a node name other than __overlay__, with leading '_'
+ 11 DTS contains a fragment node with no target property
+
+";
+}
+
+
+# -----------------------------------------------------------------------------
+# program entry point
+
+Getopt::Long::Configure("no_ignore_case", "bundling");
+
+if (!GetOptions(
+ "h" => \$help,
+ "help" => \$help,
+ "version" => \$version,
+ )) {
+
+ exit 1;
+}
+
+if ($version) {
+ print STDERR "\n$script_name $VUFX\n";
+ exit 0;
+}
+
+if ($help) {
+ &usage;
+ exit 0;
+}
+
+
+# ----- scan DTS
+
+$node_depth = 0;
+
+LINE:
+while ($line = <ARGV>) {
+
+ # ----- start of node
+
+ if ($line =~ /{/) {
+ $node_depth++;
+ $node_name = $line;
+ chomp $node_name;
+ $indent = $node_name;
+ $indent =~ s/\S.*//;
+ $node_name =~ s/^\s*//;
+ $node_name =~ s/\s*{.*//;
+
+ $in_fragment = 0;
+ if (($node_depth == 2) && ($node_name =~ /^fragment@\d*$/)) {
+ $in_fragment = 1;
+ $fragment_name = $node_name;
+ push @fragment_depth, $node_depth;
+ } elsif ($node_name =~ /^__overlay__$/) {
+ if (!$save_target) {
+ print STDERR "No 'target' property in node ${fragment_name}\n";
+ exit 11
+ }
+ print "$indent$save_target {\n";
+ undef $save_target;
+ } elsif ($node_name =~ /^_/) {
+ # might be __symbols__, __fixups__, or __local_fixups__
+ print STDERR "\nIllegal node name: $node_name\n\n";
+ exit 10;
+ } elsif ($node_depth > 1) {
+ print "$indent$node_name {\n";
+ }
+
+ next LINE;
+ }
+
+
+ # ----- end of node
+
+ if ($line =~ /}/) {
+
+ $indent = $line;
+ chomp $indent;
+ $indent =~ s/\S.*//;
+
+ $fragment_depth = pop @fragment_depth;
+ if (($node_depth > 2) && ($fragment_depth != $node_depth)) {
+ push @fragment_depth, $fragment_depth;
+ print "$line";
+ }
+
+ $node_depth--;
+
+ next LINE;
+ }
+
+
+ # ----- anything else
+
+ if ($in_fragment && ($line =~ /target = </)) {
+ $save_target = $line;
+ chomp $save_target;
+ $save_target =~ s/.*<\s*//;
+ $save_target =~ s/\s*>.*//;
+ } elsif (!$in_fragment) {
+ print "$line";
+ }
+
+ next LINE;
+
+}
--
1.9.1
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