diff options
Diffstat (limited to 'scripts/parsecwe.pl')
| -rwxr-xr-x | scripts/parsecwe.pl | 40 |
1 files changed, 34 insertions, 6 deletions
diff --git a/scripts/parsecwe.pl b/scripts/parsecwe.pl index 13f9908..d919d6b 100755 --- a/scripts/parsecwe.pl +++ b/scripts/parsecwe.pl @@ -11,6 +11,28 @@ use Getopt::Long; # data dump limit my $datalimit = 8192; +# optionally look up nv item numbers to name based on XML input from +# wget https://raw.githubusercontent.com/openpst/qcdm/HEAD/resources/xml/nv_items.xml +my %nv = (); +eval { + require XML::Simple; + require File::Basename; + + my $dir = File::Basename::dirname($0); + my $file = "$dir/nv_items.xml"; + die "cannot open $file: $!\n" unless open(F, $file); + local $/ = undef; + my $xml = <F>; + close(F); + my $x = XML::Simple::XMLin($xml); + %nv = map { $_ => $x->{'NvItem'}->{$_}->{'content'} } keys %{$x->{'NvItem'}}; +} || warn $@; + +sub nvitem2name { + my $nvitem = shift; + return $nv{$nvitem} || ''; +} + sub usage { warn "Usage: $0 <file>\n"; exit 0; @@ -112,7 +134,7 @@ sub parse_nvup { # move buf ptr $buf = substr($buf, $l) if ($len > 0); - + # observed pattern: # 'name' is only valid if d==0001. d might possibly indicate an NV entry number else? # maybe we have a sequence of (d, len, val) entries for name, val? I.e TLVs... @@ -130,11 +152,12 @@ sub parse_nvup { # observed pattern: # switch (flag) { # 00: file - # 02: weird entry - only a single 00 byte. padding? + # 01: file? + # 02: weird entry - only a single 00 byte. padding? Nope, it's a file name in EM7305 SPKG images # 08: named variable - if ($flag == 2) { - $name = join(' ', map { sprintf "%02x", $_ } unpack("C*", $name)); - } +# if ($flag == 2) { +# $name = join(' ', map { sprintf "%02x", $_ } unpack("C*", $name)); +# } printf ", <%02x> $name => ", $flag; } elsif ($d == 2) { # value # observed pattern: @@ -143,7 +166,10 @@ sub parse_nvup { $data = $cwelen ? substr($data, -$cwelen) : ''; } else { # nvitem # the NVITEM data is everything - printf " NVITEM 0x%04x => ", $d; + printf " NVITEM 0x%04x", $d; + my $nvname = &nvitem2name($d); + print " ('$nvname')" if $nvname; + print " => "; } print join(':', map { sprintf "%02x", $_ } unpack("C*", $data)); $nvup = substr($nvup, 6 + $tlen); @@ -184,6 +210,8 @@ sub parse_cwe { # parse known formats if ($type eq 'NVUP') { &parse_nvup($buf, $imgsz, "$pfx "); + } elsif ($type eq 'ARCH') { + &parse_nvup($buf, $imgsz, "$pfx "); } else { printf "${pfx} $type: $imgsz bytes\n" if 1; # redundant info } |