diff options
| -rwxr-xr-x | scripts/slugimage.pl | 1202 |
1 files changed, 1202 insertions, 0 deletions
diff --git a/scripts/slugimage.pl b/scripts/slugimage.pl new file mode 100755 index 000000000..541325dd6 --- /dev/null +++ b/scripts/slugimage.pl @@ -0,0 +1,1202 @@ +#!/usr/bin/perl +# +# SlugImage : Manipulate NSLU2 firmware images +# Dwayne Fontenot (jacques) +# Rod Whitby (rwhitby) +# www.nslu2-linux.org +# +# Copyright (c) 2004, 2006, Dwayne Fontenot & Rod Whitby +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# Neither the name of the NSLU2-Linux Development Team nor the names +# of its contributors may be used to endorse or promote products +# derived from this software without specific prior written +# permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# + +use strict; +use warnings; + +use Getopt::Long qw(:config no_ignore_case); +use POSIX qw(tmpnam); + +my($debug) = 0; +my($quiet) = 0; +my($flash_start) = 0x50000000; +my($flash_len) = 0x00800000; +my($block_size) = 0x00020000; +my($kernel_offset) = 0x00060000; +my($kernel_size) = 0x00100000; +my($ramdisk_offset) = 0x00160000; +my(@cleanup); + +# The last 70 bytes of the SercommRedBootTrailer (i.e. excluding MAC +# address). Needed to create an image with an empty RedBoot partition +# since the Sercomm upgrade tool checks for this trailer. +# http://www.nslu2-linux.org/wiki/Info/SercommRedBootTrailer +my @sercomm_redboot_trailer = (0x4573, 0x4372, 0x4d6f, 0x006d, 0x0001, + 0x0400, 0x3170, 0x5895, 0x0010, 0x0000, 0x0000, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0001, 0x0000, 0x0000, 0x0000, 0x0003, 0x2300, + 0x0063, 0x0000, 0x7320, 0x7245, 0x6f43, 0x6d4d); + +# There's a 16 byte Sercomm trailer at the end of the flash. It is used +# by RedBoot to detect a Sercomm flash layout and to configure the +# Sercomm upgrade system. +# http://www.nslu2-linux.org/wiki/Info/SercommFlashTrailer +my @sercomm_flash_trailer = (0x0100, 0x0000, 0x6323, 0xf790, 0x5265, + 0x4f63, 0x4d6d, 0xb400); + +# Take $data, and pad it out to $total_len bytes, appending 0xff's. +sub padBytes { + my($data,$total_len) = @_; + + # 0xFF is used to pad, as it's the erase value of the flash. + my($pad_char) = pack("C",0xff); + my($pad_len) = $total_len - length($data); + + # A request for negative padding is indicative of a logic error ... + if (length($data) > $total_len) { + die sprintf("padBytes error: data (%d) is longer than total_len (%d)", length($data), $total_len); + } + + return $data . ($pad_char x $pad_len); +} + +# Return the next multiple of block_size larger than or equal to $data_len. +sub paddedSize { + my($data_len) = @_; + + use integer; + return (($data_len - 1) / $block_size) * $block_size + $block_size; +} + +# Return the number of block_size blocks required to hold $data_len. +sub numBlocks { + my($data_len) = @_; + + use integer; + return (($data_len - 1) / $block_size) + 1; +} + +# Pack the name, address, size and optional skip regions of a partition entry into binary form. +sub createPartitionEntry { + my($name, $flash_base, $size, $skips) = @_; + my $entry; + + my($zero_long) = 0x0000; + + # Pack the partition entry according to the format that RedBoot (and the MTD partition parsing code) requires. + $entry = pack("a16N5x212N2",$name,$flash_base,$zero_long,$size,$zero_long,$zero_long,$zero_long,$zero_long); + + # Optionally put a skip header into the padding area. + if (defined $skips) { + my $i = scalar(@$skips); + foreach my $region (@$skips) { + substr($entry, -8 - 12*$i, 12) = + pack("a4N2", "skip", $region->{'offset'}, $region->{'size'}); + $i--; + } + } + + return $entry; +} + +# Parse partition entry and return anon array ref [$name, $offset, $size, $skip] or return 0 on partition terminator. +sub parsePartitionEntry { + my($partition_entry) = @_; + + my($entry_len) = 0x100; + length($partition_entry) eq $entry_len or die "parsePartitionEntry: partition entry length is not $entry_len!\n"; + + # Unpack the partition table entry, saving those values in which we are interested. + my($name, $flash_base, $size, $dummy_long, $padding, $skips); + ($name, $flash_base, $dummy_long, $size, $dummy_long, $dummy_long, $padding, $dummy_long, $dummy_long) = + unpack("a16N5a212N2",$partition_entry); + + # A partition entry starting with 0xFF terminates the table. + if (unpack("C", $name) eq 0xff) { + # %%% FIXME: This should only skip, not terminate. %%% + $debug and print "Found terminator for <FIS directory>\n"; + return 0; + } + + # Remove trailing nulls from the partition name. + $name =~ s/\000+//; + + # Extract the skip regions out of the padding area. + $padding =~ s/^\000+//; + $padding =~ s/\000*skip(........)\000*/$1/g; + $padding =~ s/\000+$//; + + # Store the skip regions in an array for later use. + while (length($padding)) { + my $region = {}; + ($region->{'offset'}, $region->{'size'}) = + unpack("N2", $padding); + $debug and printf("Found skip region at 0x%05X, size 0x%05X\n", + $region->{'offset'}, $region->{'size'}); + push(@$skips, $region); + $padding = substr($padding,8); + } + + return [$name, $flash_base - $flash_start, $size, $skips]; +} + +# Return partition table from data is one exists, otherwise return 0. +sub findPartitionTable { + my($data_buf) = @_; + + unpack("a7", $data_buf) eq 'RedBoot' or return 0; + return substr($data_buf, 0, 0x1000) +} + +# Parse partition table and return array of anonymous array references ([$name, $offset, $size, $skips], ...). +sub parsePartitionTable { + my($partition_table) = @_; + + my(@partitions, $fields_ref); + my($entry_len) = 0x100; + my($partition_count) = 0; + + # Loop through the fixed size partition table entries, and store the entries in @partitions. + # %%% FIXME: This doesn't handle the case of a completely full partition table. %%% + while ($fields_ref = parsePartitionEntry(substr($partition_table, $partition_count * $entry_len, $entry_len))) { + $debug and printf("Found <%s> at 0x%08X (%s)%s\n", $fields_ref->[0], $fields_ref->[1], + ($fields_ref->[2] >= $block_size ? + sprintf("%d blocks", numBlocks($fields_ref->[2])) : + sprintf("0x%05X bytes", $fields_ref->[2])), + (defined $fields_ref->[3] ? + sprintf(" [%s]", + join(", ", + map { sprintf("0x%05X/0x%05X", $_->{'offset'},$_->{'size'}) } + @{$fields_ref->[3]})) : + "")); + $partitions[$partition_count++] = $fields_ref; + } + return(@partitions); +} + +# Create an empty jffs2 block. +sub jffs2Block { + return padBytes(pack("N3", 0x19852003, 0x0000000c, 0xf060dc98), $block_size); +} + +# Write out $data to $filename, +sub writeOut { + my($data, $filename) = @_; + + open FILE,">$filename" or die "Can't open file \"$filename\": $!\n"; + + if (defined($data)) { print FILE $data;} + + close FILE or die "Can't close file \"$filename\": $!\n"; +} + +# Not used at the moment. +sub trailerData { + my($product_id) = 0x0001; + my($protocol_id) = 0x0000; + my($firmware_version) = 0x2325; + my($unknown1) = 0x90f7; + my($magic_number) = 'eRcOmM'; + my($unknown2) = 0x00b9; + + return pack("n4a6n",$product_id,$protocol_id,$firmware_version,$unknown1,$magic_number,$unknown2); +} + +# Print the contents of the Sercomm RedBoot trailer. +sub printRedbootTrailer { + my($redboot_data) = @_; + + my($correct_redboot_len) = 0x40000; + my($redboot_data_len) = length($redboot_data); + + if ($redboot_data_len != $correct_redboot_len) { + printf("Redboot length (0x%08X) is not 0x%08X\n", $redboot_data_len, $correct_redboot_len); + return; + } + + # The trailer is the last 80 bytes of the redboot partition. + my($redboot_trailer) = substr($redboot_data, -80); + + writeOut($redboot_trailer, 'RedbootTrailer'); + + my($mac_addr0, $mac_addr1, $mac_addr2, $unknown, $prefix, $ver_ctrl, $down_ctrl, $hid, $hver, $prodid, $prodidmask, + $protid, $protidmask, $funcid, $funcidmask, $fver, $cseg, $csize, $postfix) = + unpack("n3Na7n2a32n10a7",$redboot_trailer); + + printf("MAC address is %04X%04X%04X\n", $mac_addr0, $mac_addr1, $mac_addr2); + printf("unknown: %08X\n", $unknown); + printf("%s:%04X:%04X:%s\n", $prefix, $ver_ctrl, $down_ctrl, $postfix); + printf("VerControl: %04X\nDownControl: %04X\n", $ver_ctrl, $down_ctrl); + printf("hid: %04X %04X %04X %04X %04X %04X %04X %04X %04X %04X %04X %04X %04X %04X %04X %04X\n", unpack("n16", $hid)); + printf("Hver: %04X\nProdID: %04X\nProtID: %04X\nFuncID: %04X\nFver: %04X\nCseg: %04X\nCsize: %04X\n", + $hver, $prodid, $protid, $funcid, $fver, $cseg, $csize); +} + +# remove the optional Loader partition +sub removeOptionalLoader { + my($partitions_ref) = @_; + + my $index; + my $count = 0; + map { + if (not defined $index) { + if ($_->{'name'} eq "Loader") { + $index = $count; + } + $count++; + } + } @$partitions_ref; + + defined $index or die "Cannot find the Loader partition\n"; + + splice(@$partitions_ref, $index, 1); + + # Set fixed offsets and sizes for Kernel and Ramdisk + map { + if ($_->{'name'} eq 'Kernel') { + $_->{'offset'} = $kernel_offset; + $_->{'size'} = $kernel_size; + $_->{'variable'} = 0; + } + if ($_->{'name'} eq 'Ramdisk') { + $_->{'offset'} = $ramdisk_offset; + } + } @$partitions_ref; + + return; +} + + +# populate @partitions based on the firmware's partition table +sub spliceFirmwarePartitions { + my($firmware_buf, $partitions_ref) = @_; + + # we know that partition table, if it exists, begins at start of 'FIS directory' and has max length 0x1000 + my($partition_table); + map { + $_->{'name'} eq 'FIS directory' and + $partition_table = findPartitionTable(substr($firmware_buf, $_->{'offset'}, $_->{'size'})); + } @$partitions_ref; + + # return 0 here if no partition table in FIS directory + return if not $partition_table; + + my @new_partitions = parsePartitionTable($partition_table); + + # Remove the optional second stage bootloader if it is not found in the FIS directory. + if (not grep { $_->[0] eq 'Loader' } @new_partitions) { + removeOptionalLoader($partitions_ref); + } + + my($partition_count) = 0; + my($splice) = 0; + map { + + # Skip pseudo partitions. + while (($partition_count < scalar(@$partitions_ref)) and + $partitions_ref->[$partition_count]->{'pseudo'}) { + $debug and printf("Skipped <%s> (pseudo partition)\n", $partitions_ref->[$partition_count]->{'name'}); + $partition_count++; + } + + # If we are in a variable area, and we haven't reached the end of it, + # then splice in another partition for use by the later code. + if ($splice and ($partitions_ref->[$partition_count]->{'name'} ne $_->[0])) { + $debug and printf("Splicing new partition <%s> before <%s>\n", + $_->[0], $partitions_ref->[$partition_count]->{'name'}); + splice(@{$partitions_ref}, $partition_count, 0, ({'name' => "",'variable'=>1,'header'=>0})); + } + + my $partition = $partitions_ref->[$partition_count]; + + # Variable partitions can be overridden by the real FIS directory + if ($partition->{'variable'}) { + + # Only override the filename if the partition name is not set or doesn't match + if ($partition->{'name'} ne $_->[0]) { + + if (length($partition->{'name'})) { + $debug and printf("Overwriting <%s> with <%s>\n", + $partitions_ref->[$partition_count]->{'name'}, $_->[0]); + } + + $partition->{'name'} = $_->[0]; + $partition->{'file'} = $_->[0]; + } + + # Set the offset, size and skips based on the real partition table + $partition->{'offset'} = $_->[1]; + $partition->{'size'} = $_->[2]; + $partition->{'skips'} = $_->[3]; + + $debug and printf("Locating <%s> at 0x%08X (%s)\n", + $partition->{'name'}, $partition->{'offset'}, + ($partition->{'size'} >= $block_size ? + sprintf("%d blocks", numBlocks($partition->{'size'})) : + sprintf("0x%05X bytes", $partition->{'size'}))); + + $splice = 1; + } + + # Fixed partitions cannot be overridden + else { + ($partition->{'name'} eq $_->[0]) or + die "Unexpected partition <",$_->[0],"> (expecting <",$partition->{'name'},">)\n"; + + $debug and printf("Locating <%s> at 0x%08X (%s)\n", + $partition->{'name'}, $partition->{'offset'}, + ($partition->{'size'} >= $block_size ? + sprintf("%d blocks", numBlocks($partition->{'size'})) : + sprintf("0x%05X bytes", $partition->{'size'}))); + + $splice = 0; + } + + $partition_count++; + + } @new_partitions; + + return; +} + +# Read in an 8MB firmware file, and store the data into @partitions. +# Note that the data is only stored in a partition if 'offset' and 'size' are defined, +# and it does not already have data stored in it. +sub readInFirmware { + my($filename, $partitions_ref) = @_; + + my($firmware_buf); + my($total_length) = 0x800000; + + open FILE,$filename or die "Can't find firmware image \"$filename\": $!\n"; + read FILE,$firmware_buf,$total_length or die "Can't read $total_length bytes from \"$filename\": $!\n"; + close FILE or die "Can't close \"$filename\": $!\n"; + + $debug and printf("Read 0x%08X bytes from \"%s\"\n", length($firmware_buf), $filename); + + spliceFirmwarePartitions($firmware_buf, $partitions_ref); + + # Read the parts of the firmware file into the partitions table. + map { + if (defined $_->{'offset'} and defined $_->{'size'}) { + + if (defined $_->{'data'}) { + $debug and printf("Not overwriting data in <%s>\n", $_->{'name'}); + } + else { + + # Slurp up the data, based on whether a header is present or not + if ($_->{'header'}) { + + # Read the length, and grab the data based on the length. + my($data_len) = unpack("N", substr($firmware_buf, $_->{'offset'})); + + # A length of 0xFFFFFFFF means that the area is not initialised + if ($data_len != 0xFFFFFFFF) { + $debug and printf("Found header size of 0x%08X bytes for <%s>\n", $data_len, $_->{'name'}); + $_->{'data'} = substr($firmware_buf, $_->{'offset'} + $_->{'header'}, $data_len); + } + } + else { + + # Grab the whole partition, using the maximum size. + $_->{'data'} = substr($firmware_buf, $_->{'offset'}, $_->{'size'}); + } + + # If skip regions are defined, remove them from the data. + if (defined $_->{'skips'}) { + my $removed = 0; + foreach my $region (@{$_->{'skips'}}) { + if (($region->{'offset'} > 0) or + not ($_->{'header'} > 0)) { + $debug and printf("Removing 0x%05X bytes from offset 0x%05X\n", + $region->{'size'}, $region->{'offset'}); + $region->{'data'} = substr($_->{'data'}, $region->{'offset'} - $removed, $region->{'size'}, ''); + } + $removed += $region->{'size'}; + } + } + + $quiet or defined $_->{'data'} and printf("Read %s into <%s>\n", + (length($_->{'data'}) >= $block_size ? + sprintf("%d blocks", numBlocks(length($_->{'data'}))) : + sprintf("0x%05X bytes", length($_->{'data'}))), $_->{'name'}); + } + } + } @$partitions_ref; +} + +# Write the partition data stored in memory out into the files associated with each. +sub writeOutFirmwareParts { + my(@partitions) = @_; + + # Write out the parts of the firmware file. + map { + + # We can only write if 'data' and 'file' are defined. + if (defined $_->{'file'} and defined $_->{'data'} and length($_->{'data'})) { + writeOut($_->{'data'}, $_->{'file'}); + $quiet or printf("Wrote 0x%08X bytes from <%s> into \"%s\"\n", + length($_->{'data'}), $_->{'name'}, $_->{'file'}); + } + else { + $debug and printf("Skipping <%s> (%s)\n", $_->{'name'}, + (not defined $_->{'file'}) ? + "no filename specified" : + "no data to write"); + } + + } @partitions; + + return; +} + +# Read in the partition data from the files associated with each and store in memory. +sub readInFirmwareParts { + my(@partitions) = (@_); + + undef $/; # we want to slurp + + map { + + my $file = $_->{'file'}; + if (defined $file) { + open FILE,$file or die "Can't find firmware part \"$file\": $!\n"; + + # Slurp in the data + $_->{'data'} = <FILE>; + + # close the file + close FILE or die "Can't close file \"$file\": $!\n"; + + # Optionally byteswap the data + if ($_->{'byteswap'}) { + # Byte swap the data (which has to be padded to a multiple of 4 bytes). + $_->{'data'} = pack("N*", unpack("V*", $_->{'data'}.pack("CCC", 0))); + } + + # Keep track of the actual size. + my $size; + + if ($_->{'header'}) { + if ($_->{'pseudo'}) { + $size = $_->{'header'} + length($_->{'data'}); + } + else { + $size = paddedSize($_->{'header'} + length($_->{'data'})); + } + } + elsif (not $_->{'pseudo'}) { + $size = paddedSize(length($_->{'data'})); + } + else { + $size = length($_->{'data'}); + } + + # Check to make sure the file contents are not too large. + if (defined $_->{'size'} and ($size > $_->{'size'})) { + die sprintf("Ran out of flash space in <%s> - %s too large.\n", $_->{'name'}, + sprintf("0x%05X bytes", ($size - $_->{'size'}))); + } + + # If the partition does not have a fixed size, the calculate the size. + if (not defined $_->{'size'}) { + $_->{'size'} = $size; + } + + # Keep the user appraised ... + $quiet or printf("Read 0x%08X bytes from \"%s\" into <%s> (%s / %s)%s\n", + length($_->{'data'}), $_->{'file'}, $_->{'name'}, + ($size >= $block_size ? + sprintf("%d blocks", numBlocks($size)) : + sprintf("0x%05X bytes", $size)), + ($_->{'size'} >= $block_size ? + sprintf("%d blocks", numBlocks($_->{'size'})) : + sprintf("0x%05X bytes", $_->{'size'})), + ($_->{'byteswap'} ? " (byte-swapped)" : "")); + } + + } @partitions; + + return; +} + +# layoutPartitions : this function must be ugly - it needs to verify RedBoot, SysConf, Kernel, Ramdisk, and +# FIS directory partitions exist, are in the correct order, and do not have more data than can fit in +# their lengths (fixed for all but Ramdisk, which has a minimum length of one block). +# If Rootdisk and/or Userdisk exist, it must also verify that their block padded lengths are not +# too great for the available space. +# input : an array of hashes, some of which are populated with data +# output: same reference with start and size (partition not data) also populated. this populated structure +# can then be passed to buildPartitionTable() to generate the actual partition table data +sub layoutPartitions { + my(@partitions) = @_; + + # Find the last variable size partition, and save a pointer to it for later use + my $lastdisk; + my $directory_offset; + my $curdisk = $partitions[0]; + map { + if (not defined $lastdisk) { + if ($_->{'name'} eq "FIS directory") { + $lastdisk = $curdisk; + $directory_offset = $_->{'offset'}; + } + else { + $curdisk = $_; + } + } + } @partitions; + + $lastdisk or die "Couldn't find the last variable size partition\n"; + + $debug and printf("Last variable size partition is <%s>\n", $lastdisk->{'name'}); + + # + # here we go through the $partitions array ref and fill in all the values + # + + # This points to where the next partition should be placed. + my $pointer = $flash_start; + + map { + + $debug and printf("Pointer is 0x%08X\n", $pointer); + + # If this is the last variable size partition, then fill the rest of the space. + if ($_->{'name'} eq $lastdisk->{'name'}) { + $_->{'size'} = paddedSize($directory_offset + $flash_start - $pointer); + $debug and printf("Padding last variable partition <%s> to 0x%08X bytes\n", $_->{'name'}, $_->{'size'}); + } + + # Handle requests for partition creation first. + if (defined $_->{'size'} and not defined $_->{'data'} and ($_->{'name'} ne "FIS directory")) { + + # A zero size is a request to fill all available space. + if ($_->{'size'} == 0) { + # Grab the start of the FIS directory, and use all the space up to there. + $_->{'size'} = paddedSize($directory_offset + $flash_start - $pointer); + + # Create an empty partition of the requested size. + $_->{'data'} = padBytes("", $_->{'size'}); + + $debug and printf("Creating empty partition <%s> of 0x%08X bytes\n", $_->{'name'}, $_->{'size'}); + } + + if (not defined $_->{'offset'}) { + # Check to make sure that the requested size is not too large. + if (($pointer + $_->{'size'}) > ($flash_start + $directory_offset)) { + die "Ran out of flash space in <", $_->{'name'}, ">\n"; + } + } + else { + # Check to make sure that the requested size is not too large. + if (($_->{'offset'} + $_->{'size'}) > ($flash_start + $directory_offset)) { + die "Ran out of flash space in <", $_->{'name'}, ">\n"; + } + } + } + + # Then handle known partitions, and allocate them. + if (defined $_->{'size'}) { + + # Determine the start and offset of the current partition. + if (defined $_->{'offset'}) { + $_->{'start'} = $flash_start + $_->{'offset'}; + } + + # If offset is not defined, then calculate it. + else { + $_->{'start'} = $pointer; + $_->{'offset'} = $_->{'start'} - $flash_start; + } + + my $size = defined $_->{'data'} ? length($_->{'data'}) : 0; + + # Add skip regions for the partitions with headers. + if ($_->{'header'} > 0) { + # Define the skip region for the initial Sercomm header. + push(@{$_->{'skips'}}, + { 'offset' => 0, 'size' => $_->{'header'}, 'data' => undef }); + # Allow for the Sercomm header to be prepended to the data. + $size += $_->{'header'}; + } + + # Determine if the partition requires a Sercomm skip region. + if (($_->{'offset'} < $ramdisk_offset) and + (($_->{'offset'} + $size) > $ramdisk_offset)) { + # Define the skip region for the inline Sercomm header. + push(@{$_->{'skips'}}, + { 'offset' => ($ramdisk_offset - $_->{'offset'}), 'size' => 16, + 'data' => pack("N4", $block_size) }); + # Allow for the Sercomm header to be inserted in the data. + $size += 16; + } + + # Extend to another block if required. + if ($size > $_->{'size'}) { + $_->{'size'} = $size; + printf("Extending partition <%s> to 0x%08X bytes\n", $_->{'name'}, $_->{'size'}); + } + + # Keep the user appraised ... + $debug and printf("Allocated <%s> from 0x%08X to 0x%08X (%s / %s)\n", + $_->{'name'}, $_->{'start'}, $_->{'start'} + $_->{'size'}, + ($size >= $block_size ? + sprintf("%d blocks", numBlocks($size)) : + sprintf("0x%05X bytes", $size)), + ($_->{'size'} >= $block_size ? + sprintf("%d blocks", numBlocks($_->{'size'})) : + sprintf("0x%05X bytes", $_->{'size'}))); + + # Check to make sure we have not run out of room. + if (($_->{'start'} + $_->{'size'}) > ($flash_start + $flash_len)) { + die "Ran out of flash space in <", $_->{'name'}, ">\n"; + } + + $debug and printf("Moving pointer from 0x%08X to 0x%08X (0x%08X + 0x%08X)\n", + $pointer, paddedSize($_->{'start'} + $_->{'size'}), + $_->{'start'}, $_->{'size'}); + + # Move the pointer up, in preparation for the next partition. + $pointer = paddedSize($_->{'start'} + $_->{'size'}); + + } + + } @partitions; + + return; +} + +sub buildPartitionTable { + my(@partitions) = @_; + + my($flash_start) = 0x50000000; + my($partition_data) = ''; + + map { + + # Collate the partition data for all known partitions. + if (not $_->{'pseudo'} and defined $_->{'offset'} and defined $_->{'size'}) { + + # Pack and append the binary table entry for this partition. + $partition_data .= createPartitionEntry($_->{'name'}, $_->{'offset'} + $flash_start, + $_->{'size'}, $_->{'skips'}); + + # If this is the FIS directory, then write the partition table data into it. + if ($_->{'name'} eq "FIS directory") { + # Explicitly terminate the partition data. + $partition_data .= pack("C",0xff) x 0x100; + $_->{'data'} = padBytes($partition_data, $_->{'size'}); + } + + my $size = length($_->{'data'}); + + # Keep the user appraised ... + $debug and printf("Table entry <%s> from 0x%08X to 0x%08X (%s / %s)%s\n", + $_->{'name'}, $_->{'start'}, $_->{'start'} + $_->{'size'}, + ($size >= $block_size ? + sprintf("%d blocks", numBlocks($size)) : + sprintf("0x%05X bytes", $size)), + ($_->{'size'} >= $block_size ? + sprintf("%d blocks", numBlocks($_->{'size'})) : + sprintf("0x%05X bytes", $_->{'size'})), + (defined $_->{'skips'} ? + sprintf("\nTable entry <%s> skip %s", $_->{'name'}, + join(", ", + map { sprintf("0x%08X to 0x%08X", $_->{'offset'}, + $_->{'offset'} + $_->{'size'} - 1) } + @{$_->{'skips'}})) : + "") + ); + } + else { + $debug and print "No table entry required for <", $_->{'name'}, ">\n"; + } + + } @partitions; + + return; +} + +sub writeOutFirmware { + my($filename, @partitions) = @_; + + # Clear the image to start. + my $image_buf = ""; + + map { + + # We can only write a partition if it has an offset, a size, and some data to write. + if (defined $_->{'offset'} and defined $_->{'size'} and defined $_->{'data'}) { + + # Keep track of the end of the image. + my $end_point = length($image_buf); + + # If the next partition is well past the end of the current image, then pad it. + if ($_->{'offset'} > $end_point) { + $image_buf .= padBytes("", $_->{'offset'} - $end_point); + $quiet or printf("Padded %s before <%s> in \"%s\"\n", + ((length($image_buf) - $end_point) >= $block_size ? + sprintf("%d blocks", numBlocks(length($image_buf) - $end_point)) : + sprintf("0x%05X bytes", length($image_buf) - $end_point)), + $_->{'name'}, $filename); + } + + # If the next parition is before the end of the current image, then rewind. + elsif ($_->{'offset'} < $end_point) { + $debug and printf("Rewound %s before <%s> in \"%s\"\n", + (($end_point - $_->{'offset'}) >= $block_size ? + sprintf("%d blocks", numBlocks($end_point - $_->{'offset'})) : + sprintf("0x%05X bytes", $end_point - $_->{'offset'})), + $_->{'name'}, $filename); +# if (($end_point - $_->{'offset'}) >= $block_size) { +# die "Allocation error: rewound a full block or more ...\n"; +# } + } + + # If skip regions are defined, add them to the data. + if (defined $_->{'skips'}) { + my $added = 0; + foreach my $region (@{$_->{'skips'}}) { + if (($region->{'offset'} > 0) or + not ($_->{'header'} > 0)) { + $debug and printf("Inserted 0x%05X bytes (at offset 0x%05X) into <%s>\n", + $region->{'size'}, $region->{'offset'}, $_->{'name'}); + substr($_->{'data'}, + $region->{'offset'} + $added - $_->{'header'}, + 0, $region->{'data'}); + $added += $region->{'size'}; + } + } + } + + # Splice the data into the image at the appropriate place, padding as required. + substr($image_buf, $_->{'offset'}, $_->{'size'}, + $_->{'header'} ? + padBytes(pack("N4",length($_->{'data'})).$_->{'data'}, $_->{'size'}) : + padBytes($_->{'data'}, $_->{'size'})); + + # Keep the user appraised ... + $quiet or printf("Wrote %s (0x%08X to 0x%08X) from <%s> into \"%s\"\n", + ($_->{'size'} >= $block_size ? + sprintf("%2d blocks", numBlocks($_->{'size'})) : + sprintf("0x%05X bytes", $_->{'size'})), + $_->{'offset'}, $_->{'offset'}+$_->{'size'}, $_->{'name'}, $filename); + } + + # If we are not able to write a partition, then give debug information about why. + else { + $debug and printf("Skipping <%s> (%s)\n", $_->{'name'}, + (not defined $_->{'offset'}) ? "no offset defined" : + ((not defined $_->{'size'}) ? "no size defined" : + "no data available")); + } + + } @partitions; + + # Write the image to the specified file. + writeOut($image_buf, $filename); + + return; +} + +# checkPartitionTable: sanity check partition table - for testing but might evolve into setting @partitions +# so that we can write out jffs2 partitions from a read image +# currently not nearly paranoid enough +sub checkPartitionTable { + my($data) = @_; + + my($pointer) = 0; + my($entry); + + my($name, $flash_base, $size, $done, $dummy_long, $padding); + do { + $entry = substr($data, $pointer, 0x100); + + ($name,$flash_base,$dummy_long,$size,$dummy_long,$dummy_long,$padding,$dummy_long,$dummy_long) = unpack("a16N5x212N2",$entry); + $name =~ s/\0//g; + $debug and printf("pointer: %d\tname: %s%sflash_base: 0x%08X\tsize: 0x%08X\n", + $pointer, $name, (" " x (16 - length($name))), $flash_base, $size); + $pointer += 0x100; + $debug and printf("terminator: 0x%08X\n", unpack("C", substr($data, $pointer, 1))); + if (unpack("C", substr($data, $pointer, 1)) eq 0xff) { + $done = 1; + } + } until $done; +} + +sub printPartitions { + my(@partitions) = @_; + + my($offset, $size, $skips); + map { +# defined $_->{'size'} ? $size = $_->{'size'} : $size = undef; + + if (defined $_->{'size'}) { + $size = $_->{'size'}; + } + else { + $size = undef; + } + if (defined $_->{'offset'}) { + $offset = $_->{'offset'}; + } + else { + $offset = undef; + } + if (defined $_->{'skips'}) { + $skips = $_->{'skips'}; + } + else { + $skips = undef; + } + printf("%s%s", $_->{'name'}, (" " x (16 - length($_->{'name'})))); + if (defined $offset) { printf("0x%08X\t", $offset); } else { printf("(undefined)\t"); }; + if (defined $size) { printf("0x%08X", $size); } else { printf("(undefined)"); }; + if (defined $skips) { + printf("\t[%s]", + join(", ", + map { sprintf("0x%05X/0x%05X", $_->{'offset'}, $_->{'size'}); } + @$skips)); + } + printf("\n"); + } @partitions; +} + +sub defaultPartitions { + + return ({'name'=>'RedBoot', 'file'=>'RedBoot', + 'offset'=>0x00000000, 'size'=>0x00040000, + 'variable'=>0, 'header'=>0, 'pseudo'=>0, 'data'=>undef, 'byteswap'=>0}, + {'name'=>'EthAddr', 'file'=>undef, + 'offset'=>0x0003ffb0, 'size'=>0x00000006, + 'variable'=>0, 'header'=>0, 'pseudo'=>1, 'data'=>undef, 'byteswap'=>0}, + {'name'=>'SysConf', 'file'=>'SysConf', + 'offset'=>0x00040000, 'size'=>0x00020000, + 'variable'=>0, 'header'=>0, 'pseudo'=>0, 'data'=>undef, 'byteswap'=>0}, + {'name'=>'Loader', 'file'=>'apex.bin', + 'offset'=>undef, 'size'=>undef, + 'variable'=>1, 'header'=>16, 'pseudo'=>0, 'data'=>undef, 'byteswap'=>0}, + {'name'=>'Kernel', 'file'=>'vmlinuz', + 'offset'=>undef, 'size'=>undef, + 'variable'=>1, 'header'=>16, 'pseudo'=>0, 'data'=>undef, 'byteswap'=>0}, + {'name'=>'Ramdisk', 'file'=>'ramdisk.gz', + 'offset'=>undef, 'size'=>undef, + 'variable'=>1, 'header'=>16, 'pseudo'=>0, 'data'=>undef, 'byteswap'=>0}, + {'name'=>'FIS directory', 'file'=>undef, + 'offset'=>0x007e0000, 'size'=>0x00020000, + 'variable'=>0, 'header'=>0, 'pseudo'=>0, 'data'=>undef, 'byteswap'=>0}, + {'name'=>'Loader config', 'file'=>undef, + 'offset'=>0x007f8000, 'size'=>0x00004000, + 'variable'=>0, 'header'=>0, 'pseudo'=>1, 'data'=>undef, 'byteswap'=>0}, + {'name'=>'Microcode', 'file'=>'NPE-B', + 'offset'=>0x007fc000, 'size'=>0x00003ff0, + 'variable'=>0, 'header'=>16, 'pseudo'=>1, 'data'=>undef, 'byteswap'=>0}, + {'name'=>'Trailer', 'file'=>'Trailer', + 'offset'=>0x007ffff0, 'size'=>0x00000010, + 'variable'=>0, 'header'=>0, 'pseudo'=>1, 'data'=>undef, 'byteswap'=>0}); +} + +# Main routine starts here ... + +my($unpack, $pack, $little, $input, $output, $redboot); +my($kernel, $sysconf, $ramdisk, $fisdir); +my($microcode, $trailer, $ethaddr, $loader); + +END { + # Remove temporary files + for my $file (@cleanup) { + unlink $file; + } +} + +if (!GetOptions("d|debug" => \$debug, + "q|quiet" => \$quiet, + "u|unpack" => \$unpack, + "p|pack" => \$pack, + "l|little" => \$little, + "i|input=s" => \$input, + "o|output=s" => \$output, + "b|redboot=s" => \$redboot, + "k|kernel=s" => \$kernel, + "s|sysconf=s" => \$sysconf, + "r|ramdisk=s" => \$ramdisk, + "f|fisdir=s" => \$fisdir, + "m|microcode=s" => \$microcode, + "t|trailer=s" => \$trailer, + "e|ethaddr=s" => \$ethaddr, + "L|loader=s" => \$loader, + ) or (not defined $pack and not defined $unpack)) { + print "Usage: slugimage <options>\n"; + print "\n"; + print " [-d|--debug] Turn on debugging output\n"; + print " [-q|--quiet] Turn off status messages\n"; + print " [-u|--unpack] Unpack a firmware image\n"; + print " [-p|--pack] Pack a firmware image\n"; + print " [-l|--little] Convert Kernel and Ramdisk to little-endian\n"; + print " [-i|--input] <file> Input firmware image filename\n"; + print " [-o|--output] <file> Output firmware image filename\n"; + print " [-b|--redboot] <file> Input/Output RedBoot filename\n"; + print " [-s|--sysconf] <file> Input/Output SysConf filename\n"; + print " [-L|--loader] <file> Second stage boot loader filename\n"; + print " [-k|--kernel] <file> Input/Ouptut Kernel filename\n"; + print " [-r|--ramdisk] <file> Input/Output Ramdisk filename(s)\n"; + print " [-f|--fisdir] <file> Input/Output FIS directory filename\n"; + print " [-m|--microcode] <file> Input/Output Microcode filename\n"; + print " [-t|--trailer] <file> Input/Output Trailer filename\n"; + print " [-e|--ethaddr] <AABBCCDDEEFF> Set the Ethernet address\n"; + + # %%% TODO %%% Document --ramdisk syntax + + exit 1; +} + +my(@partitions) = defaultPartitions(); + +if ($pack) { + die "Output filename must be specified\n" unless defined $output; + + # If we're creating an image and no RedBoot, SysConf partition is + # explicitly specified, simply write an empty one as the upgrade tools + # don't touch RedBoot and SysConf anyway. If no Trailer is specified, + # put in one. + if (not defined $redboot and not -e "RedBoot") { + $redboot = tmpnam(); + open TMP, ">$redboot" or die "Cannot open file $redboot: $!"; + push @cleanup, $redboot; + # The RedBoot partition is 256 * 1024 = 262144; the trailer we add + # is 70 bytes. + print TMP "\0"x(262144-70); + # Upgrade tools check for an appropriate Sercomm trailer. + for my $i (@sercomm_redboot_trailer) { + print TMP pack "S", $i; + } + close TMP; + } + if (not defined $sysconf and not -e "SysConf") { + $sysconf = tmpnam(); + open TMP, ">$sysconf" or die "Cannot open file $sysconf: $!"; + push @cleanup, $sysconf; + # The SysConf partition is 128 * 1024 = 131072 + print TMP "\0"x131072; + close TMP; + } + if (not defined $trailer and not -e "Trailer") { + $trailer = tmpnam(); + open TMP, ">$trailer" or die "Cannot open file $trailer: $!"; + push @cleanup, $trailer; + for my $i (@sercomm_flash_trailer) { + print TMP pack "S", $i; + } + close TMP; + } + + # If the microcode was not specified, then don't complain that it's missing. + if (not defined $microcode and not -e "NPE-B") { + map { ($_->{'name'} eq 'Microcode') && ($_->{'file'} = undef); } @partitions; + } +} + +# Go through the partition options, and set the names and files in @partitions +if (defined $redboot) { map { ($_->{'name'} eq 'RedBoot') && ($_->{'file'} = $redboot); } @partitions; } +if (defined $sysconf) { map { ($_->{'name'} eq 'SysConf') && ($_->{'file'} = $sysconf); } @partitions; } +if (defined $loader) { map { ($_->{'name'} eq 'Loader') && ($_->{'file'} = $loader); } @partitions; } +if (defined $kernel) { map { ($_->{'name'} eq 'Kernel') && ($_->{'file'} = $kernel); } @partitions; } +if (defined $fisdir) { map { ($_->{'name'} eq 'FIS directory') && ($_->{'file'} = $fisdir); } @partitions; } +if (defined $microcode) { map { ($_->{'name'} eq 'Microcode') && ($_->{'file'} = $microcode); } @partitions; } +if (defined $trailer) { map { ($_->{'name'} eq 'Trailer') && ($_->{'file'} = $trailer); } @partitions; } + +if (defined $little) { + map { + if (($_->{'name'} eq 'Loader') or + ($_->{'name'} eq 'Kernel') or + ($_->{'name'} eq 'Ramdisk')) { + $_->{'byteswap'} = 1; + } + } @partitions; +} + +if (defined $ethaddr) { + map { + if ($_->{'name'} eq 'EthAddr') { + $ethaddr =~ s/://g; + if (($ethaddr !~ m/^[0-9A-Fa-f]+$/) or (length($ethaddr) != 12)) { + die "Invalid ethernet address specification: '".$ethaddr."'\n"; + } + $_->{'data'} = pack("H12", $ethaddr); + } + } @partitions; +} + +if (defined $ramdisk) { + + # A single filename is used for the ramdisk filename + if ($ramdisk !~ m/[:,]/) { + map { ($_->{'name'} eq 'Ramdisk') && ($_->{'file'} = $ramdisk); } @partitions; + } + + # otherwise, it's a list of name:file mappings + else { + my @mappings = split(',', $ramdisk); + + # Find the index of the Ramdisk entry + my $index; + my $count = 0; + map { + if (not defined $index) { + if ($_->{'name'} eq "Ramdisk") { + $index = $count; + } + $count++; + } + } @partitions; + + defined $index or die "Cannot find the Ramdisk partition\n"; + + # Replace the Ramdisk entry with the new mappings + splice(@partitions, $index, 1, map { + + # Preserve the information from the ramdisk entry + my %entry = %{$partitions[$index]}; + + # Parse the mapping + ($_ =~ m/^([^:]+):([^:]+)(:([^:]+))?$/) or die "Invalid syntax in --ramdisk\n"; + $entry{'name'} = $1; $entry{'file'} = $2; my $size = $4; + + # If the mapping is not for the ramdisk, then undefine its attributes + if ($entry{'name'} ne 'Ramdisk') { + $entry{'offset'} = undef; + $entry{'size'} = undef; + $entry{'variable'} = 1; + $entry{'header'} = 0; + $entry{'pseudo'} = 0; + $entry{'data'} = undef; + $entry{'byteswap'} = 0; + } + + # Support specification of the number of blocks for empty jffs2 + if ($entry{'file'} =~ m/^[0-9]+$/) { + $size = $entry{'file'}; + $entry{'file'} = undef; + } + + # If the user has specified a size, then respect their wishes + if (defined $size) { + $entry{'size'} = $size * $block_size; + # Create an empty partition of the requested size. + $entry{'data'} = padBytes("", $entry{'size'}); + if ($entry{'header'}) { + $entry{'data'} = padBytes("", $entry{'size'} - $entry{'header'}); + } + } + + \%entry; + + } @mappings); + } +} + +# Read in the firmware image +if ($input) { + if ($debug) { + print "Initial partition map:\n"; + printPartitions(@partitions); + } + + my $result = readInFirmware($input, \@partitions); + + if ($debug) { + print "After reading firmware:\n"; + printPartitions(@partitions); + } +} + +# Unpack the firmware if requested +if ($unpack) { + die "Input filename must be specified\n" unless defined $input; + +# map { +# ($_->{'name'} eq 'FIS directory') and @partitions = checkPartitionTable($_->{'data'}); +# } @partitions; + + writeOutFirmwareParts(@partitions); + +} + +# Pack the firmware if requested +if ($pack) { + + if (!defined $loader) { + removeOptionalLoader(\@partitions); + } + + if ($debug) { + print "Initial partition map:\n"; + printPartitions(@partitions); + } + + my $result = readInFirmwareParts(@partitions); + + if ($debug) { + print "after readInFirmwareParts():\n"; + printPartitions(@partitions); +# map { +# ($_->{'name'} eq 'RedBoot') && (printRedbootTrailer($_->{'data'})); +# } @partitions; + } + + layoutPartitions(@partitions); + + if ($debug) { + print "after layoutPartitions():\n"; + printPartitions(@partitions); + } + + buildPartitionTable(@partitions); + + if ($debug) { + print "after buildPartitionTable():\n"; + printPartitions(@partitions); + +# my($lastblock); +# map { +# if ($_->{'name'} eq 'FIS directory') { +# $lastblock = $_->{'data'}; +# } +# } @partitions; + +# print "checkPartitionTable():\n"; +# checkPartitionTable($lastblock); + } + + writeOutFirmware($output, @partitions); + +} + +exit 0; |