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Subject[PATCH linux-firmware 1/4] dsp56k: Add makefile for building from source
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Some small amount of postprocessing is required after assembling
bootstrap.asm with a56. Add a script and makefile for this.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
WHENCE | 4 +++-
dsp56k/Makefile | 6 ++++++
dsp56k/concat-bootstrap.pl | 33 +++++++++++++++++++++++++++++++++
3 files changed, 42 insertions(+), 1 deletions(-)
create mode 100644 dsp56k/Makefile
create mode 100644 dsp56k/concat-bootstrap.pl

diff --git a/WHENCE b/WHENCE
index bf216fe..7553628 100644
--- a/WHENCE
+++ b/WHENCE
@@ -372,10 +372,12 @@ Driver: dsp56k - Atari DSP56k support

File: dsp56k/bootstrap.bin
Source: dsp56k/bootstrap.asm
+Source: dsp56k/Makefile
+Source: dsp56k/concat-bootstrap.pl

Licence: GPLv2 or later

-DSP56001 assembler, possibly buildable with a56 from
+DSP56001 assembler, buildable with a56 from
http://www.zdomain.com/a56.html

--------------------------------------------------------------------------
diff --git a/dsp56k/Makefile b/dsp56k/Makefile
new file mode 100644
index 0000000..c758a28
--- /dev/null
+++ b/dsp56k/Makefile
@@ -0,0 +1,6 @@
+bootstrap.bin: bootstrap.asm concat-bootstrap.pl
+ a56 bootstrap.asm >/dev/null
+ perl concat-bootstrap.pl <a56.out >bootstrap.bin
+
+clean:
+ rm -f a56.out bootstrap.bin
diff --git a/dsp56k/concat-bootstrap.pl b/dsp56k/concat-bootstrap.pl
new file mode 100644
index 0000000..b6d9003
--- /dev/null
+++ b/dsp56k/concat-bootstrap.pl
@@ -0,0 +1,33 @@
+# Postprocessor for dsp56k bootstrap code.
+#
+# Copyright Ben Hutchings 2011.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+use strict;
+use warnings;
+
+my @memory;
+my %symbol;
+
+# Reconstruct memory image and symbol table
+while (<>) {
+ if (/^P ([0-9A-F]{4}) ([0-9A-F]{6})\n/) {
+ $memory[hex($1)] = hex($2);
+ } elsif (/^I ([0-9A-F]{6}) (\w+)\n/) {
+ $symbol{$2} = hex($1);
+ } else {
+ print STDERR "W: did not recognise line $.\n";
+ }
+}
+
+# Concatenate first and second stage. Second stage is assembled
+# between 'upload' and 'upload_end', but initially loaded at
+# 'real' (end of the first stage).
+for (0 .. ($symbol{real} - 1), $symbol{upload} .. ($symbol{upload_end} - 1)) {
+ my $word = $memory[$_] || 0;
+ print pack('CCC', $word / 65536, ($word / 256) % 256, $word % 256);
+}
--
1.7.7.3


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