#!/usr/bin/perl -w
# $Id: impact_wrapper 314 2010-07-09 17:38:41Z mueller $
#
# Copyright 2010- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
#
# This program is free software; you may redistribute and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 2, or at your option any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for complete details.
#
#  Revision History:
# Date         Rev Version  Comment
# 2010-05-24   294   1.0.2  support nexys2/xc3s1200e
# 2010-04-24   282   1.0.1  proper error exit for GetOptions()
# 2010-04-24   281   1.0    Initial version
#

use 5.005;                                  # require Perl 5.005 or higher
use strict;                                 # require strict checking
use FileHandle;

use Getopt::Long;

my %opts = ();

$opts{board} = "s3board";
$opts{path}  = "xc3s1000";

GetOptions(\%opts, "help", "board=s", "path=s") or exit 1;

sub print_help;

autoflush STDOUT 1 if (-p STDOUT);          # autoflush if output into pipe

if (exists $opts{help}) {
  print_help;
  exit 0;
}

my $board = $opts{board};
my $ipath = $opts{path};

$ipath =~ s/-.*$//;                         # trim all after first '-'

# at this point just support Digilent s3board with xc3s200 or xc3s1000

my $part2;

if ($board eq "s3board" && $ipath eq "xc3s200") {
  $part2 = "xcf02s";
} elsif ($board eq "s3board" && $ipath eq "xc3s1000") {
  $part2 = "xcf04s";
} elsif ($board eq "nexys2" && $ipath eq "xc3s1200e") {
  $part2 = "xcf04s";
} else {
  print STDERR "impact_wrapper-E: only s3board/nexys2 supported\n";
  exit 1;
}

my $file = shift @ARGV;

if (! defined $file) {
  print STDERR "impact_wrapper-E: no bit file specified\n";
  exit 1;
}
if (! -r $file) {
  print STDERR "impact_wrapper-E: input file not found or readable\n";
  exit 1;
}

my $tmpfile = "tmp_impact_wrapper.cmd";

open (OFILE, ">$tmpfile") or die "Couldn't open tmp cmd file: $!";

print  OFILE "setMode -bs\n";
print  OFILE "setCable -p auto\n";
print  OFILE "addDevice -p 1 -part $ipath\n";
print  OFILE "addDevice -p 2 -part $part2\n";
print  OFILE "assignFile -p 1 -file $file\n";
print  OFILE "program -p 1 -verify\n";
print  OFILE "quit\n";

close (OFILE) or die "Couldn't close tmp cmd file: $!";

my $wrc = system "/bin/sh", "-c", "impact -batch $tmpfile";
my $rc  = 0;
if ($wrc != 0) {
  my $rc = int($wrc/256);
  if ($rc == 0) {
    my $sig = $wrc % 256;
    print STDERR "impact_wrapper-I impact aborted by signal $sig\n";
    $rc = 1;
  } else {
    print STDERR "impact_wrapper-I impact failed (rc=$rc) $?\n";
  }
}

unlink $tmpfile or die "Couldn't delete tmp cmd file: $!";

exit $rc;

#-------------------------------------------------------------------------------

sub print_help {
  print "usage: impact_wrapper [--help] [--board=b] [--path=p] file\n";
  print "  --help           this message\n";
  print "  --board=b        type of board\n";
  print "  --path=p         type of fpga\n";
}