1 #!/usr/bin/perl -w 2 # 3 # Copyright (C) 2008 Michael Brown <mbrown (at] fensystems.co.uk>. 4 # 5 # This program is free software; you can redistribute it and/or 6 # modify it under the terms of the GNU General Public License as 7 # published by the Free Software Foundation; either version 2 of the 8 # License, or any later version. 9 # 10 # This program is distributed in the hope that it will be useful, but 11 # WITHOUT ANY WARRANTY; without even the implied warranty of 12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 # General Public License for more details. 14 # 15 # You should have received a copy of the GNU General Public License 16 # along with this program; if not, write to the Free Software 17 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 19 use strict; 20 use warnings; 21 22 use FindBin; 23 use lib "$FindBin::Bin"; 24 use Option::ROM qw ( :all ); 25 26 sub merge_entry_points { 27 my $baserom_entry = \shift; 28 my $rom_entry = \shift; 29 my $offset = shift; 30 31 if ( $$rom_entry ) { 32 my $old_entry = $$baserom_entry; 33 $$baserom_entry = ( $offset + $$rom_entry ); 34 $$rom_entry = $old_entry; 35 } 36 } 37 38 my @romfiles = @ARGV; 39 my @roms = map { my $rom = new Option::ROM; $rom->load($_); $rom } @romfiles; 40 41 my $baserom = shift @roms; 42 my $offset = $baserom->length; 43 44 foreach my $rom ( @roms ) { 45 46 # Update base length 47 $baserom->{length} += $rom->{length}; 48 49 # Merge initialisation entry point 50 merge_entry_points ( $baserom->{init}, $rom->{init}, $offset ); 51 52 # Merge BOFM header 53 merge_entry_points ( $baserom->{bofm_header}, $rom->{bofm_header}, $offset ); 54 55 # Update PCI header, if present in both 56 my $baserom_pci = $baserom->pci_header; 57 my $rom_pci = $rom->pci_header; 58 if ( $baserom_pci && $rom_pci ) { 59 60 # Update PCI lengths 61 $baserom_pci->{image_length} += $rom_pci->{image_length}; 62 if ( exists $baserom_pci->{runtime_length} ) { 63 if ( exists $rom_pci->{runtime_length} ) { 64 $baserom_pci->{runtime_length} += $rom_pci->{runtime_length}; 65 } else { 66 $baserom_pci->{runtime_length} += $rom_pci->{image_length}; 67 } 68 } 69 70 # Merge CLP entry point 71 if ( exists ( $baserom_pci->{clp_entry} ) && 72 exists ( $rom_pci->{clp_entry} ) ) { 73 merge_entry_points ( $baserom_pci->{clp_entry}, $rom_pci->{clp_entry}, 74 $offset ); 75 } 76 } 77 78 # Update PnP header, if present in both 79 my $baserom_pnp = $baserom->pnp_header; 80 my $rom_pnp = $rom->pnp_header; 81 if ( $baserom_pnp && $rom_pnp ) { 82 merge_entry_points ( $baserom_pnp->{bcv}, $rom_pnp->{bcv}, $offset ); 83 merge_entry_points ( $baserom_pnp->{bdv}, $rom_pnp->{bdv}, $offset ); 84 merge_entry_points ( $baserom_pnp->{bev}, $rom_pnp->{bev}, $offset ); 85 } 86 87 # Fix checksum for this ROM segment 88 $rom->fix_checksum(); 89 90 $offset += $rom->length; 91 } 92 93 $baserom->pnp_header->fix_checksum() if $baserom->pnp_header; 94 $baserom->fix_checksum(); 95 $baserom->save ( "-" ); 96 foreach my $rom ( @roms ) { 97 $rom->save ( "-" ); 98 } 99
