mirror of https://github.com/ipxe/ipxe.git
118 lines
3.4 KiB
Perl
118 lines
3.4 KiB
Perl
#!/usr/bin/perl -w
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#
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# Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of the
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# License, or any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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use strict;
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use warnings;
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use FindBin;
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use lib "$FindBin::Bin";
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use Option::ROM qw ( :all );
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sub merge_entry_points {
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my $baserom_entry = \shift;
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my $rom_entry = \shift;
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my $offset = shift;
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if ( $$rom_entry ) {
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my $old_entry = $$baserom_entry;
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$$baserom_entry = ( $offset + $$rom_entry );
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$$rom_entry = $old_entry;
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}
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}
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my @romfiles = @ARGV;
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my @roms = map { my $rom = new Option::ROM; $rom->load($_); $rom } @romfiles;
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my $baserom = shift @roms;
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my $offset = $baserom->length;
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foreach my $rom ( @roms ) {
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# Merge initialisation entry point
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merge_entry_points ( $baserom->{init}, $rom->{init}, $offset );
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# Merge BOFM header
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merge_entry_points ( $baserom->{bofm_header}, $rom->{bofm_header}, $offset );
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# Update PCI header, if present in both
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my $baserom_pci = $baserom->pci_header;
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my $rom_pci = $rom->pci_header;
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if ( $baserom_pci && $rom_pci ) {
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# Update PCI lengths
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$baserom_pci->{image_length} += $rom_pci->{image_length};
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if ( exists $baserom_pci->{runtime_length} ) {
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if ( exists $rom_pci->{runtime_length} ) {
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$baserom_pci->{runtime_length} += $rom_pci->{runtime_length};
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} else {
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$baserom_pci->{runtime_length} += $rom_pci->{image_length};
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}
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}
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# Merge CLP entry point
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if ( exists ( $baserom_pci->{clp_entry} ) &&
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exists ( $rom_pci->{clp_entry} ) ) {
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merge_entry_points ( $baserom_pci->{clp_entry}, $rom_pci->{clp_entry},
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$offset );
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}
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}
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# Update PnP header, if present in both
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my $baserom_pnp = $baserom->pnp_header;
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my $rom_pnp = $rom->pnp_header;
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if ( $baserom_pnp && $rom_pnp ) {
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merge_entry_points ( $baserom_pnp->{bcv}, $rom_pnp->{bcv}, $offset );
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merge_entry_points ( $baserom_pnp->{bdv}, $rom_pnp->{bdv}, $offset );
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merge_entry_points ( $baserom_pnp->{bev}, $rom_pnp->{bev}, $offset );
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}
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# Update iPXE header, if present
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my $baserom_ipxe = $baserom->ipxe_header;
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my $rom_ipxe = $rom->ipxe_header;
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if ( $baserom_ipxe ) {
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# Update shrunk length
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$baserom_ipxe->{shrunk_length} = ( $baserom->{length} +
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( $rom_ipxe ?
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$rom_ipxe->{shrunk_length} :
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$rom->{length} ) );
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# Fix checksum
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$baserom_ipxe->fix_checksum();
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}
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# Update base length
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$baserom->{length} += $rom->{length};
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# Fix checksum for this ROM segment
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$rom->fix_checksum();
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# Add this ROM to base ROM
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my $data = substr ( $baserom->get(), 0, $baserom->length() );
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$data .= $rom->get();
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$data .= $baserom->next_image()->get() if $baserom->next_image();
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$baserom->set ( $data );
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$offset += $rom->length;
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}
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$baserom->pnp_header->fix_checksum() if $baserom->pnp_header;
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$baserom->fix_checksum();
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$baserom->save ( "-" );
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