00001 /* 00002 * Copyright (C) 2001-2006 by egnite Software GmbH. All rights reserved. 00003 * 00004 * Redistribution and use in source and binary forms, with or without 00005 * modification, are permitted provided that the following conditions 00006 * are met: 00007 * 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the copyright holders nor the names of 00014 * contributors may be used to endorse or promote products derived 00015 * from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS 00018 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00019 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00020 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE 00021 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00022 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00023 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 00024 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 00025 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00026 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 00027 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00028 * SUCH DAMAGE. 00029 * 00030 * For additional information see http://www.ethernut.de/ 00031 * 00032 */ 00033 00034 /* 00035 * $Log$ 00036 * Revision 1.10 2009/01/16 17:03:02 haraldkipp 00037 * Configurable host name length. The *nix conditional is 00038 * no longer required as this will be handled in the nvmem 00039 * routines. NutLoadConfig will now set the virgin host 00040 * name, if no valid configuration is available. Cookie 00041 * and virgin host name are configurable too, but disabled 00042 * in the Configurator until we fixed the string value 00043 * problem. You may use UserConf.mk instead. 00044 * 00045 * Revision 1.9 2006/05/25 09:18:28 haraldkipp 00046 * API documentation updated and corrected. 00047 * 00048 * Revision 1.8 2006/01/23 19:50:48 haraldkipp 00049 * Dummy NVMEM configuration for GBA added. 00050 * 00051 * Revision 1.7 2006/01/23 17:26:17 haraldkipp 00052 * Platform independant routines added, which provide generic access to 00053 * non-volatile memory. 00054 * 00055 * Revision 1.6 2005/07/26 15:49:59 haraldkipp 00056 * Cygwin support added. 00057 * 00058 * Revision 1.5 2004/09/08 10:24:34 haraldkipp 00059 * No EEPROM support for AT91 00060 * 00061 * Revision 1.4 2004/04/07 12:13:58 haraldkipp 00062 * Matthias Ringwald's *nix emulation added 00063 * 00064 * Revision 1.3 2004/03/16 16:48:45 haraldkipp 00065 * Added Jan Dubiec's H8/300 port. 00066 * 00067 * Revision 1.2 2004/03/03 17:42:19 drsung 00068 * Bugfix in NutSaveConfig. Write only to eeprom if actual byte in 00069 * eeprom differs from byte to write. 00070 * 00071 * Revision 1.1.1.1 2003/05/09 14:41:46 haraldkipp 00072 * Initial using 3.2.1 00073 * 00074 * Revision 1.1 2003/02/04 18:17:07 harald 00075 * Version 3 released 00076 * 00077 */ 00078 00079 #include <cfg/arch.h> 00080 #include <sys/nutdebug.h> 00081 #include <sys/confos.h> 00082 #include <dev/nvmem.h> 00083 00084 #include <string.h> 00085 00090 00097 CONFOS confos; 00098 00114 int NutLoadConfig(void) 00115 { 00116 /* Sanity check. */ 00117 NUTASSERT(sizeof(CONFOS) <= 255); 00118 00119 if (NutNvMemLoad(CONFOS_EE_OFFSET, &confos, sizeof(CONFOS)) == 0 /* If loaded... */ 00120 && confos.size == sizeof(CONFOS) /* ...check magic size and cookie. */ 00121 && memcmp(confos.magic, CONFOS_EE_MAGIC, sizeof(CONFOS_EE_MAGIC) - 1) == 0) { 00122 return 0; 00123 } 00124 00125 /* No valid configuration, set virgin hostname. */ 00126 NUTASSERT(sizeof(confos.hostname) > strlen(CONFOS_VIRGIN_HOSTNAME)); 00127 strcpy(confos.hostname, CONFOS_VIRGIN_HOSTNAME); 00128 00129 return -1; 00130 } 00131 00142 int NutSaveConfig(void) 00143 { 00144 /* Sanity checks. */ 00145 NUTASSERT(sizeof(CONFOS) <= 255); 00146 NUTASSERT(strlen(confos.hostname) <= MAX_HOSTNAME_LEN); 00147 00148 /* Update the magic part. */ 00149 confos.size = sizeof(CONFOS); 00150 memcpy(confos.magic, CONFOS_EE_MAGIC, sizeof(CONFOS_EE_MAGIC) - 1); 00151 00152 return NutNvMemSave(CONFOS_EE_OFFSET, &confos, sizeof(CONFOS)); 00153 } 00154