Mercurial > flash_v2

annotate packages/redboot/current/src/net/net_io.c @ 173:547dc35af910

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Fix bootp local ip addr bug from last commit
author jlarmour
date Fri, 20 Jul 2001 13:11:29 +0000
parents cd45958b28ff
children 38892b97b685
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1 //==========================================================================
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2 //
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3 // net/net_io.c
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4 //
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5 // Stand-alone network logical I/O support for RedBoot
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000, 2001 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas
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35 // Contributors: gthomas
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36 // Date: 2000-07-14
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37 // Purpose:
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38 // Description:
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39 //
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40 // This code is part of RedBoot (tm).
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41 //
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42 //####DESCRIPTIONEND####
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43 //
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44 //==========================================================================
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45
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46 #include <redboot.h>
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47 #include <eth_drv.h> // Logical driver interfaces
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48 #include <net/net.h>
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49 #include <cyg/hal/hal_misc.h> // Helper functions
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50 #include <cyg/hal/hal_if.h> // HAL I/O interfaces
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51 #include <cyg/hal/drv_api.h>
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52 #include <cyg/hal/hal_intr.h>
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53
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54 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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55 #include <flash_config.h>
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56
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57 RedBoot_config_option("GDB connection port",
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58 gdb_port,
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59 ALWAYS_ENABLED, true,
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60 CONFIG_INT,
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61 CYGNUM_REDBOOT_NETWORKING_TCP_PORT
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62 );
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63 RedBoot_config_option("Network debug at boot time",
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64 net_debug,
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65 ALWAYS_ENABLED, true,
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66 CONFIG_BOOL,
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67 false
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68 );
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69 // Note: the following options are related. If 'bootp' is false, then
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70 // the other values are used in the configuration. Because of the way
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71 // that configuration tables are generated, they should have names which
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72 // are related. The configuration options will show up lexicographically
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73 // ordered, thus the peculiar naming. In this case, the 'use' option is
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74 // negated (if false, the others apply) which makes the names even more
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75 // confusing.
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76 RedBoot_config_option("Use BOOTP for network configuration",
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77 bootp,
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78 ALWAYS_ENABLED, true,
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79 CONFIG_BOOL,
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80 true
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81 );
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82 RedBoot_config_option("Local IP address",
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83 bootp_my_ip,
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84 "bootp", false,
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85 CONFIG_IP,
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86 0
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87 );
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88 RedBoot_config_option("Default server IP address",
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89 bootp_server_ip,
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90 "bootp", false,
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91 CONFIG_IP,
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92 0
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93 );
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94 #endif
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95
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96 #define TCP_CHANNEL CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS
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97
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98 #ifdef DEBUG_TCP
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99 int show_tcp = 0;
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100 #endif
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101
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102 static tcp_socket_t tcp_sock;
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103 static int state;
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104 static int _timeout = 500;
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105 static int orig_console, orig_debug;
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106
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107 static int in_buflen = 0;
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108 static unsigned char in_buf[64];
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109 static unsigned char *in_bufp;
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110 static int out_buflen = 0;
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111 static unsigned char out_buf[64];
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112 static unsigned char *out_bufp;
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113
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114 // Functions in this module
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115 static void net_io_flush(void);
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116 static void net_io_revert_console(void);
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117 static void net_io_putc(void*, cyg_uint8);
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118
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119 // Special characters used by Telnet - must be interpretted here
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120 #define TELNET_IAC 0xFF // Interpret as command (escape)
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121 #define TELNET_IP 0xF4 // Interrupt process
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122 #define TELNET_WONT 0xFC // I Won't do it
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123 #define TELNET_DO 0xFD // Will you XXX
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124 #define TELNET_TM 0x06 // Time marker (special DO/WONT after IP)
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125
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126 static cyg_bool
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127 _net_io_getc_nonblock(void* __ch_data, cyg_uint8* ch)
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128 {
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129 if (in_buflen == 0) {
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130 __tcp_poll();
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131 if (tcp_sock.state == _CLOSE_WAIT) {
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132 // This connection is breaking
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133 if (tcp_sock.data_bytes == 0) {
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134 __tcp_close(&tcp_sock);
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135 }
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136 return false;
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137 }
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138 if (tcp_sock.state == _CLOSED) {
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139 // The connection is gone
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140 net_io_revert_console();
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141 *ch = '\n';
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142 return true;
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143 }
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144 in_buflen = __tcp_read(&tcp_sock, in_buf, sizeof(in_buf));
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145 in_bufp = in_buf;
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146 #ifdef DEBUG_TCP
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147 if (show_tcp && (in_buflen > 0)) {
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148 int old_console;
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149 old_console = start_console();
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150 printf("%s:%d\n", __FUNCTION__, __LINE__);
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151 dump_buf(in_buf, in_buflen);
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152 end_console(old_console);
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153 }
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154 #endif // DEBUG_TCP
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155 }
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156 if (in_buflen) {
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157 *ch = *in_bufp++;
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158 in_buflen--;
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159 return true;
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160 } else {
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161 return false;
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162 }
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163 }
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164
143
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165 static cyg_bool
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166 net_io_getc_nonblock(void* __ch_data, cyg_uint8* ch)
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167 {
151
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168 cyg_uint8 esc;
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169
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170 if (!_net_io_getc_nonblock(__ch_data, ch))
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171 return false;
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172
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173 if (gdb_active || *ch != TELNET_IAC)
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174 return true;
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175
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176 // Telnet escape - need to read/handle more
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177 while (!_net_io_getc_nonblock(__ch_data, &esc)) ;
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178
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179 switch (esc) {
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180 case TELNET_IAC:
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181 // The other special case - escaped escape
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182 return true;
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183 case TELNET_IP:
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184 // Special case for ^C == Interrupt Process
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185 *ch = 0x03;
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186 // Just in case the other end needs synchronizing
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187 net_io_putc(__ch_data, TELNET_IAC);
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188 net_io_putc(__ch_data, TELNET_WONT);
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189 net_io_putc(__ch_data, TELNET_TM);
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190 net_io_flush();
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191 return true;
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192 case TELNET_DO:
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193 // Telnet DO option
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194 while (!_net_io_getc_nonblock(__ch_data, &esc)) ;
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195 // Respond with WONT option
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196 net_io_putc(__ch_data, TELNET_IAC);
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197 net_io_putc(__ch_data, TELNET_WONT);
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198 net_io_putc(__ch_data, esc);
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199 return false; // Ignore this whole thing!
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200 default:
143
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201 return false;
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202 }
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203 }
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204
115
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205 static cyg_uint8
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206 net_io_getc(void* __ch_data)
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207 {
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208 cyg_uint8 ch;
151
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209 int idle_timeout = 10; // 10ms
115
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210
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211 CYGARC_HAL_SAVE_GP();
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212 while (true) {
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213 if (net_io_getc_nonblock(__ch_data, &ch)) break;
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214 if (--idle_timeout == 0) {
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215 net_io_flush();
151
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216 idle_timeout = 10;
115
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217 } else {
151
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218 MS_TICKS_DELAY();
115
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219 }
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220 }
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221 CYGARC_HAL_RESTORE_GP();
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222 return ch;
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223 }
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224
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225 static void
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226 net_io_flush(void)
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227 {
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228 int n;
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229 char *bp = out_buf;
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230
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231 while (out_buflen) {
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232 if (tcp_sock.state == _CLOSE_WAIT) {
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233 // This connection is tring to close
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234 __tcp_close(&tcp_sock);
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235 }
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236 if (tcp_sock.state == _CLOSED) {
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237 // The connection is gone!
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238 net_io_revert_console();
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239 break;
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240 }
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241 #ifdef DEBUG_TCP
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242 if (show_tcp) {
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243 int old_console;
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244 old_console = start_console();
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245 printf("%s.%d\n", __FUNCTION__, __LINE__);
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246 dump_buf(out_buf, out_buflen);
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247 end_console(old_console);
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248 }
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249 #endif // SHOW_TCP
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250 n = __tcp_write(&tcp_sock, bp, out_buflen);
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251 if (n > 0) {
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252 out_buflen -= n;
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253 bp += n;
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254 }
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255 __tcp_poll();
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256 }
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257 out_bufp = out_buf; out_buflen = 0;
138
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258 __tcp_drain(&tcp_sock);
115
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259 // Check interrupt flag
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260 if (CYGACC_CALL_IF_CONSOLE_INTERRUPT_FLAG()) {
136
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261 CYGACC_CALL_IF_CONSOLE_INTERRUPT_FLAG_SET(0);
115
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262 cyg_hal_user_break(0);
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263 }
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264 }
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265
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266 static void
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267 net_io_putc(void* __ch_data, cyg_uint8 c)
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268 {
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269 static bool have_dollar, have_hash;
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270 static int hash_count;
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271
172
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272 CYGARC_HAL_SAVE_GP();
115
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273 *out_bufp++ = c;
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274 if (c == '$') have_dollar = true;
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275 if (have_dollar && (c == '#')) {
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276 have_hash = true;
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277 hash_count = 0;
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278 }
162
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279 if ((++out_buflen == sizeof(out_buf)) || (c == '\n') ||
115
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280 (have_hash && (++hash_count == 3))) {
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281 net_io_flush();
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282 have_dollar = false;
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283 }
172
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284 CYGARC_HAL_RESTORE_GP();
115
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285 }
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286
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287 static void
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288 net_io_write(void* __ch_data, const cyg_uint8* __buf, cyg_uint32 __len)
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289 {
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290 int old_console;
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291
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292 old_console = start_console();
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293 printf("%s.%d\n", __FUNCTION__, __LINE__);
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294 end_console(old_console);
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295 #if 0
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296 CYGARC_HAL_SAVE_GP();
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297
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298 while(__len-- > 0)
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299 net_io_putc(__ch_data, *__buf++);
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300
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301 CYGARC_HAL_RESTORE_GP();
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302 #endif
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303 }
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304
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305 static void
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306 net_io_read(void* __ch_data, cyg_uint8* __buf, cyg_uint32 __len)
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307 {
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308 int old_console;
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309
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310 old_console = start_console();
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311 printf("%s.%d\n", __FUNCTION__, __LINE__);
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312 end_console(old_console);
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313 #if 0
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314 CYGARC_HAL_SAVE_GP();
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315
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316 while(__len-- > 0)
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317 *__buf++ = net_io_getc(__ch_data);
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318
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319 CYGARC_HAL_RESTORE_GP();
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320 #endif
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321 }
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322
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323 static cyg_bool
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324 net_io_getc_timeout(void* __ch_data, cyg_uint8* ch)
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325 {
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326 int delay_count;
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327 cyg_bool res;
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328
115
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329 CYGARC_HAL_SAVE_GP();
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330 net_io_flush(); // Make sure any output has been sent
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331 delay_count = _timeout;
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332
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333 for(;;) {
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334 res = net_io_getc_nonblock(__ch_data, ch);
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335 if (res || 0 == delay_count--)
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336 break;
151
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337 MS_TICKS_DELAY();
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338 }
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339
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340 CYGARC_HAL_RESTORE_GP();
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341
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342 return res;
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343 }
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344
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345 static int
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346 net_io_control(void *__ch_data, __comm_control_cmd_t __func, ...)
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347 {
117
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348 static int vector = 0;
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349 int ret = 0;
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350 static int irq_state = 0;
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351
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352 CYGARC_HAL_SAVE_GP();
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353
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354 switch (__func) {
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355 case __COMMCTL_IRQ_ENABLE:
117
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356 irq_state = 1;
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357 if (vector == 0) {
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358 vector = eth_drv_int_vector();
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359 }
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360 HAL_INTERRUPT_UNMASK(vector);
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361 break;
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362 case __COMMCTL_IRQ_DISABLE:
117
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363 ret = irq_state;
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364 irq_state = 0;
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365 if (vector == 0) {
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366 vector = eth_drv_int_vector();
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367 }
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368 HAL_INTERRUPT_MASK(vector);
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369 break;
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370 case __COMMCTL_DBG_ISR_VECTOR:
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371 ret = vector;
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372 break;
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373 case __COMMCTL_SET_TIMEOUT:
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374 {
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375 va_list ap;
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376
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377 va_start(ap, __func);
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378
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379 ret = _timeout;
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380 _timeout = va_arg(ap, cyg_uint32);
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381
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382 va_end(ap);
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383 break;
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384 }
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385 case __COMMCTL_FLUSH_OUTPUT:
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386 net_io_flush();
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387 break;
115
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388 default:
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389 break;
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390 }
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391 CYGARC_HAL_RESTORE_GP();
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392 return ret;
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393 }
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394
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395 static int
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396 net_io_isr(void *__ch_data, int* __ctrlc,
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397 CYG_ADDRWORD __vector, CYG_ADDRWORD __data)
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398 {
117
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399 char ch;
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400
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401 CYGARC_HAL_SAVE_GP();
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402 *__ctrlc = 0;
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403 if (net_io_getc_nonblock(__ch_data, &ch)) {
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404 if (ch == 0x03) {
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405 *__ctrlc = 1;
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406 }
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407 }
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408 CYGARC_HAL_RESTORE_GP();
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409 return CYG_ISR_HANDLED;
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410 }
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411
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412 // TEMP
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413
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414 int
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415 start_console(void)
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416 {
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417 int cur_console;
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418 cur_console = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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419 CYGACC_CALL_IF_SET_CONSOLE_COMM(0);
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420 return cur_console;
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421 }
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422
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423 void
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424 end_console(int old_console)
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425 {
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426 // Restore original console
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427 CYGACC_CALL_IF_SET_CONSOLE_COMM(old_console);
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428 }
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429 // TEMP
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430
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431 static void
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432 net_io_revert_console(void)
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433 {
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434 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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435 console_selected = false;
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436 #endif
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437 CYGACC_CALL_IF_SET_CONSOLE_COMM(orig_console);
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438 CYGACC_CALL_IF_SET_DEBUG_COMM(orig_debug);
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439 console_echo = true;
115
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440 }
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441
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442 static void
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443 net_io_assume_console(void)
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444 {
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445 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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446 console_selected = true;
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447 #endif
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448 console_echo = false;
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449 orig_console = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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450 CYGACC_CALL_IF_SET_CONSOLE_COMM(TCP_CHANNEL);
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451 orig_debug = CYGACC_CALL_IF_SET_DEBUG_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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452 CYGACC_CALL_IF_SET_DEBUG_COMM(TCP_CHANNEL);
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453 }
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454
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455 static void
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456 net_io_init(void)
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457 {
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458 static int init = 0;
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459 if (!init) {
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460 hal_virtual_comm_table_t* comm;
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461 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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462
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463 // Setup procs in the vector table
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464 CYGACC_CALL_IF_SET_CONSOLE_COMM(TCP_CHANNEL);
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465 comm = CYGACC_CALL_IF_CONSOLE_PROCS();
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466 //CYGACC_COMM_IF_CH_DATA_SET(*comm, chan);
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467 CYGACC_COMM_IF_WRITE_SET(*comm, net_io_write);
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468 CYGACC_COMM_IF_READ_SET(*comm, net_io_read);
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469 CYGACC_COMM_IF_PUTC_SET(*comm, net_io_putc);
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470 CYGACC_COMM_IF_GETC_SET(*comm, net_io_getc);
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471 CYGACC_COMM_IF_CONTROL_SET(*comm, net_io_control);
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472 CYGACC_COMM_IF_DBG_ISR_SET(*comm, net_io_isr);
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473 CYGACC_COMM_IF_GETC_TIMEOUT_SET(*comm, net_io_getc_timeout);
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474
161
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475 // Disable interrupts via this interface to set static
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476 // state into correct state.
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477 net_io_control( comm, __COMMCTL_IRQ_DISABLE );
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478
115
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479 // Restore original console
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480 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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481
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482 init = 1;
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483 gdb_active = false;
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484 }
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485 __tcp_listen(&tcp_sock, gdb_port);
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486 state = tcp_sock.state;
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487 #ifdef DEBUG_TCP
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488 printf("show tcp = %p\n", (void *)&show_tcp);
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489 #endif
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490 }
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491
151
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492 // Check for incoming TCP debug connection
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493 void
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494 net_io_test(bool is_idle)
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495 {
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496 if (!is_idle) return; // Only care about idle case
151
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497 if (!have_net) return;
115
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498 __tcp_poll();
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499 if (state != tcp_sock.state) {
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500 // Something has changed
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501 if (tcp_sock.state == _ESTABLISHED) {
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502 // A new connection has arrived
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503 net_io_assume_console();
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504 in_bufp = in_buf; in_buflen = 1; *in_bufp = '\r';
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505 out_bufp = out_buf; out_buflen = 0;
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506 }
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507 if (tcp_sock.state == _CLOSED) {
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508 net_io_init(); // Get ready for another connection
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509 }
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510 }
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511 state = tcp_sock.state;
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512 }
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513
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514 // This schedules the 'net_io_test()' function to be run by RedBoot's
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515 // main command loop when idle (i.e. when no input arrives after some
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516 // period of time).
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517 RedBoot_idle(net_io_test, RedBoot_IDLE_NETIO);
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518
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519 //
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520 // Network initialization
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521 //
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522 #include <eth_drv.h>
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523 #include <netdev.h>
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524 #include <cyg/hal/hal_tables.h>
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525
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526 // Define table boundaries
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527 CYG_HAL_TABLE_BEGIN( __NETDEVTAB__, netdev );
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528 CYG_HAL_TABLE_END( __NETDEVTAB_END__, netdev );
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529
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530 RedBoot_init(net_init, RedBoot_INIT_LAST);
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531
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532 void
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533 net_init(void)
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534 {
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535 cyg_netdevtab_entry_t *t;
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536
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537 // Set defaults as appropriate
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538 use_bootp = true;
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539 net_debug = false;
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540 gdb_port = CYGNUM_REDBOOT_NETWORKING_TCP_PORT;
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541 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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542 // Fetch values from saved config data, if available
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543 flash_get_config("net_debug", &net_debug, CONFIG_BOOL);
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544 flash_get_config("gdb_port", &gdb_port, CONFIG_INT);
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545 flash_get_config("bootp", &use_bootp, CONFIG_BOOL);
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546 {
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547 ip_addr_t bootp_my_ip;
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548 char i;
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549 flash_get_config("bootp_my_ip", &bootp_my_ip, CONFIG_IP);
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550 if (bootp_my_ip[0] != 0 || bootp_my_ip[1] != 0 ||
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551 bootp_my_ip[2] != 0 || bootp_my_ip[3] != 0) {
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552 // bootp_my_ip is set to something so let it override any static IP
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553 for (i=0; i<4; i++)
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554 __local_ip_addr[i] = bootp_my_ip[i];
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555 }
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556 }
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557 flash_get_config("bootp_server_ip", &my_bootp_info.bp_siaddr, CONFIG_IP);
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558 #endif
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559 have_net = false;
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560 // Make sure the recv buffers are set up
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561 eth_drv_buffers_init();
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562 __pktbuf_init();
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563 // Initialize all network devices
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564 for (t = &__NETDEVTAB__[0]; t != &__NETDEVTAB_END__; t++) {
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565 if (t->init(t)) {
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566 t->status = CYG_NETDEVTAB_STATUS_AVAIL;
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567 } else {
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568 // What to do if device init fails?
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569 t->status = 0; // Device not [currently] available
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570 }
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571 }
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572 if (!__local_enet_sc) {
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573 printf("No network interfaces found\n");
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574 return;
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575 }
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576 // Initialize the network [if present]
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577 if (use_bootp) {
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578 if (__bootp_find_local_ip(&my_bootp_info) == 0) {
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579 have_net = true;
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580 } else {
172
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581 // Is it an unset address, or has it been set to a static addr
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582 if (__local_ip_addr[0] == 0 && __local_ip_addr[1] == 0 &&
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583 __local_ip_addr[2] == 0 && __local_ip_addr[3] == 0) {
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584 printf("Can't get BOOTP info - network disabled!\n");
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585 } else {
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586 printf("Can't get BOOTP info, using default IP address\n");
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587 have_net = true;
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588 }
115
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589 }
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590 } else {
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591 have_net = true; // Assume values in FLASH were OK
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592 }
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593 if (have_net) {
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594 printf("IP: %s", inet_ntoa((in_addr_t *)&__local_ip_addr));
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595 printf(", Default server: %s\n", inet_ntoa(&my_bootp_info.bp_siaddr));
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596 net_io_init();
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597 }
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598 }