drivers/usb/serial/ezusb_convert.pl

   1 #! /usr/bin/perl -w
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4
   5 # convert an Intel HEX file into a set of C records usable by the firmware
   6 # loading code in usb-serial.c (or others)
   7
   8 # accepts the .hex file(s) on stdin, a basename (to name the initialized
   9 # array) as an argument, and prints the .h file to stdout. Typical usage:
  10 #  perl ezusb_convert.pl foo <foo.hex >fw_foo.h
  11
  12
  13 my $basename = $ARGV[0];
  14 die "no base name specified" unless $basename;
  15
  16 while (<STDIN>) {
  17     # ':' <len> <addr> <type> <len-data> <crc> '\r'
  18     #  len, type, crc are 2-char hex, addr is 4-char hex. type is 00 for
  19     # normal records, 01 for EOF
  20     my($lenstring, $addrstring, $typestring, $reststring, $doscrap) =
  21       /^:(\w\w)(\w\w\w\w)(\w\w)(\w+)(\r?)$/;
  22     die "malformed line: $_" unless $reststring;
  23     last if $typestring eq '01';
  24     my($len) = hex($lenstring);
  25     my($addr) = hex($addrstring);
  26     my(@bytes) = unpack("C*", pack("H".(2*$len), $reststring));
  27     #pop(@bytes); # last byte is a CRC
  28     push(@records, [$addr, \@bytes]);
  29 }
  30
  31 @sorted_records = sort { $a->[0] <=> $b->[0] } @records;
  32
  33 print <<"EOF";
  34 /*
  35  * ${basename}_fw.h
  36  *
  37  * Generated from ${basename}.s by ezusb_convert.pl
  38  * This file is presumed to be under the same copyright as the source file
  39  * from which it was derived.
  40  */
  41
  42 EOF
  43
  44 print "static const struct ezusb_hex_record ${basename}_firmware[] = {\n";
  45 foreach $r (@sorted_records) {
  46     printf("{ 0x%04x,\t%d,\t{", $r->[0], scalar(@{$r->[1]}));
  47     print join(", ", map {sprintf('0x%02x', $_);} @{$r->[1]});
  48     print "} },\n";
  49 }
  50 print "{ 0xffff,\t0,\t{0x00} }\n";
  51 print "};\n";