package/broadcom-wl/src/kmod/patchtable.pl

   1 #!/usr/bin/perl
   2 #
   3 # Copyright (C) 2006 OpenWrt.org
   4 # Copyright (C) 2006 Felix Fietkau
   5 #
   6 # This is free software, licensed under the GNU General Public License v2.
   7 # See /LICENSE for more information.
   8 #
   9 use strict;
  10
  11 my $TABLE = pack("V", 0xbadc0ded);
  12 my $TABLE_SIZE = 512;
  13 my $SLT1 = "\x01\x00\x00\x00";
  14 my $SLT2 = "\x02\x00\x00\x00";
  15 my $ACKW = "\x03\x00\x00\x00";
  16 my $PTABLE_END = "\xff\xff\xff\xff";
  17
  18 my $addr = "";
  19 my $opcode = "";
  20 my $function = "";
  21
  22 sub add_entry {
  23         my $key = shift;
  24         my $value = shift;
  25         my $default = shift;
  26
  27         $TABLE .= $key;
  28         $TABLE .= pack("V", $value);
  29         $TABLE .= pack("V", $default);
  30 }
  31
  32 while (<>) {
  33         $addr = $opcode = "";
  34         /^\w{8}\s*<(.*)>:$/ and $function = $1;
  35         /^\s*(\w+):\s*(\w{8})\s*/ and do {
  36                 $addr = $1;
  37                 $opcode = $2;
  38         };
  39
  40         ($function eq 'wlc_update_slot_timing') and do {
  41                 # li    a2,9    -- short slot time
  42                 ($opcode eq '24060009') and add_entry($SLT1, hex($addr), hex($opcode));
  43                 # li    v0,519  -- 510 + short slot time
  44                 ($opcode eq '24020207') and add_entry($SLT2, hex($addr), hex($opcode));
  45
  46                 # li    a2,20   -- long slot time
  47                 ($opcode eq '24060014') and add_entry($SLT1, hex($addr), hex($opcode));
  48                 # li    v0,530  -- 510 + long slot time
  49                 ($opcode eq '24020212') and add_entry($SLT2, hex($addr), hex($opcode));
  50         };
  51         ($function eq 'wlc_d11hdrs') and do {
  52                 # ori   s6,s6,0x1 -- ack flag (new)
  53                 ($opcode eq '36d60001') and add_entry($ACKW, hex($addr), hex($opcode));
  54                 # ori   s3,s3,0x1 -- ack flag (old)
  55                 ($opcode eq '36730001') and add_entry($ACKW, hex($addr), hex($opcode));
  56         }
  57 }
  58
  59 $TABLE .= $PTABLE_END;
  60 $TABLE .= ("\x00" x ($TABLE_SIZE - length($TABLE)));
  61 print $TABLE;