Line No. | Rev | Author | Line |
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1 | 32 | kaklik | /********************************************************************* |
2 | * |
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3 | * Reboot Module |
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4 | * Module for Microchip TCP/IP Stack |
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5 | * -Remotely resets the PIC |
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6 | * -Reference: Internet Bootloader documentation |
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7 | * |
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8 | ********************************************************************* |
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9 | * FileName: Reboot.c |
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10 | * Dependencies: UDP |
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11 | * Processor: PIC18, PIC24F, PIC24H, dsPIC30F, dsPIC33F, PIC32 |
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12 | * Compiler: Microchip C32 v1.05 or higher |
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13 | * Microchip C30 v3.12 or higher |
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14 | * Microchip C18 v3.30 or higher |
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15 | * HI-TECH PICC-18 PRO 9.63PL2 or higher |
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16 | * Company: Microchip Technology, Inc. |
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17 | * |
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18 | * Software License Agreement |
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19 | * |
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20 | * Copyright (C) 2002-2009 Microchip Technology Inc. All rights |
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21 | * reserved. |
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22 | * |
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23 | * Microchip licenses to you the right to use, modify, copy, and |
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24 | * distribute: |
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25 | * (i) the Software when embedded on a Microchip microcontroller or |
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26 | * digital signal controller product ("Device") which is |
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27 | * integrated into Licensee's product; or |
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28 | * (ii) ONLY the Software driver source files ENC28J60.c, ENC28J60.h, |
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29 | * ENCX24J600.c and ENCX24J600.h ported to a non-Microchip device |
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30 | * used in conjunction with a Microchip ethernet controller for |
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31 | * the sole purpose of interfacing with the ethernet controller. |
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32 | * |
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33 | * You should refer to the license agreement accompanying this |
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34 | * Software for additional information regarding your rights and |
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35 | * obligations. |
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36 | * |
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37 | * THE SOFTWARE AND DOCUMENTATION ARE PROVIDED "AS IS" WITHOUT |
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38 | * WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT |
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39 | * LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A |
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40 | * PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
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41 | * MICROCHIP BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR |
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42 | * CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF |
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43 | * PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR SERVICES, ANY CLAIMS |
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44 | * BY THIRD PARTIES (INCLUDING BUT NOT LIMITED TO ANY DEFENSE |
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45 | * THEREOF), ANY CLAIMS FOR INDEMNITY OR CONTRIBUTION, OR OTHER |
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46 | * SIMILAR COSTS, WHETHER ASSERTED ON THE BASIS OF CONTRACT, TORT |
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47 | * (INCLUDING NEGLIGENCE), BREACH OF WARRANTY, OR OTHERWISE. |
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48 | * |
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49 | * |
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50 | * Author Date Comment |
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51 | *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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52 | * Howard Schlunder 02/22/07 Original |
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53 | ********************************************************************/ |
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54 | #define __REBOOT_C |
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55 | |||
56 | #include "TCPIPConfig.h" |
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57 | |||
58 | #if defined(STACK_USE_REBOOT_SERVER) |
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59 | |||
60 | #include "TCPIP Stack/TCPIP.h" |
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61 | |||
62 | |||
63 | #define REBOOT_PORT 69 // UDP TFTP port |
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64 | |||
65 | |||
66 | // For improved security, you might want to limit reboot capabilities |
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67 | // to only users on the same IP subnet. Define REBOOT_SAME_SUBNET_ONLY |
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68 | // to enable this access restriction. |
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69 | #define REBOOT_SAME_SUBNET_ONLY |
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70 | |||
71 | |||
72 | extern NODE_INFO remoteNode; |
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73 | |||
74 | /********************************************************************* |
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75 | * Function: void RebootTask(void) |
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76 | * |
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77 | * PreCondition: Stack is initialized() |
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78 | * |
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79 | * Input: None |
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80 | * |
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81 | * Output: None |
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82 | * |
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83 | * Side Effects: None |
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84 | * |
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85 | * Overview: Checks for incomming traffic on port 69. |
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86 | * Resets the PIC if a 'R' is received. |
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87 | * |
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88 | * Note: This module is primarily for use with the |
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89 | * Ethernet bootloader. By resetting, the Ethernet |
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90 | * bootloader can take control for a second and let |
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91 | * a firmware upgrade take place. |
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92 | ********************************************************************/ |
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93 | void RebootTask(void) |
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94 | { |
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95 | static UDP_SOCKET MySocket = INVALID_UDP_SOCKET; |
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96 | struct |
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97 | { |
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98 | BYTE vMACAddress[6]; |
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99 | DWORD dwIPAddress; |
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100 | WORD wChecksum; |
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101 | } BootloaderAddress; |
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102 | |||
103 | if(MySocket == INVALID_UDP_SOCKET) |
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104 | MySocket = UDPOpen(REBOOT_PORT, NULL, INVALID_UDP_PORT); |
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105 | |||
106 | if(MySocket == INVALID_UDP_SOCKET) |
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107 | return; |
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108 | |||
109 | // Do nothing if no data is waiting |
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110 | if(!UDPIsGetReady(MySocket)) |
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111 | return; |
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112 | |||
113 | #if defined(REBOOT_SAME_SUBNET_ONLY) |
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114 | // Respond only to name requests sent to us from nodes on the same subnet |
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115 | if((remoteNode.IPAddr.Val & AppConfig.MyMask.Val) != (AppConfig.MyIPAddr.Val & AppConfig.MyMask.Val)) |
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116 | { |
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117 | UDPDiscard(); |
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118 | return; |
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119 | } |
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120 | #endif |
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121 | |||
122 | // Get our MAC address, IP address, and compute a checksum of them |
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123 | memcpy((void*)&BootloaderAddress.vMACAddress[0], (void*)&AppConfig.MyMACAddr.v[0], sizeof(AppConfig.MyMACAddr)); |
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124 | BootloaderAddress.dwIPAddress = AppConfig.MyIPAddr.Val; |
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125 | BootloaderAddress.wChecksum = CalcIPChecksum((BYTE*)&BootloaderAddress, sizeof(BootloaderAddress) - sizeof(BootloaderAddress.wChecksum)); |
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126 | |||
127 | // To enter the bootloader, we need to clear the /POR bit in RCON. |
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128 | // Otherwise, the bootloader will immediately hand off execution |
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129 | // to us. |
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130 | #if defined(USE_LCD) |
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131 | strcpypgm2ram((char*)LCDText, "Bootloader Reset"); |
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132 | LCDUpdate(); |
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133 | #endif |
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134 | RCONbits.POR = 0; |
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135 | #if defined(__18CXX) |
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136 | { |
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137 | WORD_VAL wvPROD; |
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138 | |||
139 | wvPROD.Val = ((WORD)&BootloaderAddress); |
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140 | PRODH = wvPROD.v[1]; |
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141 | PRODL = wvPROD.v[0]; |
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142 | } |
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143 | #endif |
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144 | Reset(); |
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145 | } |
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146 | |||
147 | #endif //#if defined(STACK_USE_REBOOT_SERVER) |
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