fw_stub.awk revision 155055
1#!/usr/bin/awk -f 2 3#- 4# Copyright (c) 2006 Max Laier. 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS `AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28# $FreeBSD: head/sys/tools/fw_stub.awk 155055 2006-01-30 16:32:08Z mlaier $ 29 30# 31# Script to generate module .c file from a list of firmware images 32# 33 34function usage () 35{ 36 print "usage: fw_stub <firmware:name>* [-m modname] [-c outfile]"; 37 exit 1; 38} 39 40# These are just for convenience ... 41function printc(s) 42{ 43 if (opt_c) 44 print s > ctmpfilename; 45 else 46 print s > "/dev/stdout"; 47} 48 49BEGIN { 50 51# 52# Process the command line. 53# 54 55num_files = 0; 56 57for (i = 1; i < ARGC; i++) { 58 if (ARGV[i] ~ /^-/) { 59 # 60 # awk doesn't have getopt(), so we have to do it ourselves. 61 # This is a bit clumsy, but it works. 62 # 63 for (j = 2; j <= length(ARGV[i]); j++) { 64 o = substr(ARGV[i], j, 1); 65 if (o == "c") { 66 if (length(ARGV[i]) > j) { 67 opt_c = substr(ARGV[i], j + 1); 68 break; 69 } 70 else { 71 if (++i < ARGC) 72 opt_c = ARGV[i]; 73 else 74 usage(); 75 } 76 } else if (o == "m") { 77 if (length(ARGV[i]) > j) { 78 opt_m = substr(ARGV[i], j + 1); 79 break; 80 } 81 else { 82 if (++i < ARGC) 83 opt_m = ARGV[i]; 84 else 85 usage(); 86 } 87 } else 88 usage(); 89 } 90 } else { 91 split(ARGV[i], curr, ":"); 92 filenames[num_files] = curr[1]; 93 if (length(curr[2]) > 0) 94 shortnames[num_files] = curr[2]; 95 else 96 shortnames[num_files] = curr[2]; 97 if (length(curr[3]) > 0) 98 versions[num_files] = int(curr[3]); 99 else 100 versions[num_files] = 0; 101 num_files++; 102 } 103} 104 105if (!num_files || !opt_m) 106 usage(); 107 108cfilename = opt_c; 109ctmpfilename = cfilename ".tmp"; 110 111printc("#include <sys/param.h>\ 112#include <sys/errno.h>\ 113#include <sys/kernel.h>\ 114#include <sys/module.h>\ 115#include <sys/linker.h>\ 116#include <sys/firmware.h>\n"); 117 118for (file_i = 0; file_i < num_files; file_i++) { 119 symb = filenames[file_i]; 120 # '-', '.' and '/' are converted to '_' by ld/objcopy 121 gsub(/-|\.|\//, "_", symb); 122 printc("extern char _binary_" symb "_start[], _binary_" symb "_end[];"); 123} 124 125printc("\nstatic int\n"\ 126opt_m "_fw_modevent(module_t mod, int type, void *unused)\ 127{\ 128 struct firmware *fp;\ 129 switch (type) {\ 130 case MOD_LOAD:"); 131 132for (file_i = 0; file_i < num_files; file_i++) { 133 short = shortnames[file_i]; 134 symb = filenames[file_i]; 135 version = versions[file_i]; 136 # '-', '.' and '/' are converted to '_' by ld/objcopy 137 gsub(/-|\.|\//, "_", symb); 138 139 if (file_i == 0) 140 reg = "\t\tfp = "; 141 else 142 reg = "\t\t(void)"; 143 144 reg = reg "firmware_register(\"" short "\", _binary_" symb "_start , "; 145 reg = reg "(size_t)(_binary_" symb "_end - _binary_" symb "_start), "; 146 reg = reg version ", "; 147 148 if (file_i == 0) 149 reg = reg "NULL);"; 150 else 151 reg = reg "fp);"; 152 153 printc(reg); 154} 155 156printc("\t\treturn (0);\ 157 case MOD_UNLOAD:"); 158 159for (file_i = 1; file_i < num_files; file_i++) { 160 printc("\t\tfirmware_unregister(\"" shortnames[file_i] "\");"); 161} 162 163printc("\t\tfirmware_unregister(\"" shortnames[0] "\");"); 164 165printc("\t\treturn (0);\ 166 }\ 167 return (EINVAL);\ 168}\ 169\ 170static moduledata_t " opt_m "_fw_mod = {\ 171 \"" opt_m "_fw\",\ 172 " opt_m "_fw_modevent,\ 173 0\ 174};\ 175DECLARE_MODULE(" opt_m "_fw, " opt_m "_fw_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);\ 176MODULE_VERSION(" opt_m "_fw, 1);\ 177MODULE_DEPEND(" opt_m "_fw, firmware, 1, 1, 1);\ 178"); 179 180if (opt_c) 181 if ((rc = system("mv -f " ctmpfilename " " cfilename))) { 182 print "'mv -f " ctmpfilename " " cfilename "' failed: " rc \ 183 > "/dev/stderr"; 184 exit 1; 185 } 186 187exit 0; 188 189} 190