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annotate rvinterf/lowlevel/tfc139.c @ 975:0d7cc054ef72

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rvinterf/lowlevel: updates for the new knowledge of TM predating ETM
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Sun, 15 Nov 2015 04:26:10 +0000
parents 15e69d31c96f
children 7166c8311b0d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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359
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /*
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2 * This program is a contender for the title of the ugliest hack
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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3 * in the FreeCalypso project. It will attempt to break into a
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4 * locked-down TracFone C139 by mimicking the actions of the
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5 * mot931c.exe TF "unlocker".
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6 */
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7
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8 #include <sys/types.h>
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9 #include <sys/errno.h>
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10 #include <stdio.h>
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11 #include <string.h>
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12 #include <strings.h>
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13 #include <stdlib.h>
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14 #include <unistd.h>
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15 #include <time.h>
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16 #include "../include/pktmux.h"
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17 #include "../include/limits.h"
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18
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19 extern int target_fd;
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20 extern char *baudrate_name;
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21
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22 extern u_char rxpkt[];
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23 extern size_t rxpkt_len;
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24
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25 char *logfname;
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26 FILE *logF;
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27 time_t logtime;
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28 int no_output; /* for output.c */
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29
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30 int wakeup_after_sec = 7;
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31
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32 /* see ../../target-utils/tf-breakin/payload.S for the source */
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33 static u_char iram_payload[112] = {
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34 0xD3, 0xF0, 0x21, 0xE3, 0x58, 0x10, 0x9F, 0xE5,
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35 0xF5, 0x00, 0xA0, 0xE3, 0xB2, 0x00, 0xC1, 0xE1,
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36 0xA0, 0x00, 0xA0, 0xE3, 0xB2, 0x00, 0xC1, 0xE1,
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37 0x48, 0x60, 0x9F, 0xE5, 0x05, 0x00, 0xD6, 0xE5,
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38 0x20, 0x00, 0x10, 0xE3, 0xFC, 0xFF, 0xFF, 0x0A,
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39 0x2C, 0x10, 0x8F, 0xE2, 0x06, 0x20, 0xA0, 0xE3,
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40 0x01, 0x00, 0xD1, 0xE4, 0x00, 0x00, 0xC6, 0xE5,
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41 0x01, 0x20, 0x52, 0xE2, 0xFB, 0xFF, 0xFF, 0x1A,
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42 0x05, 0x00, 0xD6, 0xE5, 0x40, 0x00, 0x10, 0xE3,
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43 0xFC, 0xFF, 0xFF, 0x0A, 0x18, 0x10, 0x9F, 0xE5,
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44 0x01, 0x2C, 0xA0, 0xE3, 0xB0, 0x20, 0xC1, 0xE1,
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45 0x00, 0xF0, 0xA0, 0xE3, 0x02, 0x02, 0x02, 0x4F,
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46 0x4B, 0x02, 0x00, 0x00, 0x02, 0xF8, 0xFF, 0xFF,
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47 0x00, 0x58, 0xFF, 0xFF, 0x10, 0xFB, 0xFF, 0xFF
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48 };
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49
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50 static unsigned iram_load_addr = 0x800000;
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51 static unsigned stack_smash_addr = 0x837C54;
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52
360
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53 static u_char stack_smash_payload[4];
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54
418
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55 static char *target_tty_port;
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56
359
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57 static void
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58 send_compal_memwrite(addr, payload, payload_len)
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59 unsigned addr;
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60 u_char *payload;
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61 {
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62 u_char pkt[MAX_PKT_TO_TARGET];
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63 int i, csum, csum_offset;
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64
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65 pkt[0] = RVT_TM_HEADER;
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66 pkt[1] = 0x40; /* old TM3 MEM_WRITE command */
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67 pkt[2] = addr;
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68 pkt[3] = addr >> 8;
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69 pkt[4] = addr >> 16;
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70 pkt[5] = addr >> 24;
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71 bcopy(payload, pkt + 6, payload_len);
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72 csum_offset = payload_len + 6;
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73 csum = 0;
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74 for (i = 1; i < csum_offset; i++)
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75 csum ^= pkt[i];
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76 pkt[i] = csum;
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77 send_pkt_to_target(pkt, i + 1);
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78 }
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79
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80 main(argc, argv)
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81 char **argv;
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82 {
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83 extern char *optarg;
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84 extern int optind;
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85 int c;
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86 fd_set fds;
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87
432
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88 baudrate_name = "57600"; /* what C139 firmware uses */
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89 while ((c = getopt(argc, argv, "a:B:l:s:w:")) != EOF)
359
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90 switch (c) {
419
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91 case 'a':
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92 iram_load_addr = strtoul(optarg, 0, 16);
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93 continue;
432
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94 case 'B':
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95 baudrate_name = optarg;
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96 continue;
359
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97 case 'l':
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98 logfname = optarg;
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99 continue;
419
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100 case 's':
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101 stack_smash_addr = strtoul(optarg, 0, 16);
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102 continue;
360
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103 case 'w':
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104 wakeup_after_sec = strtoul(optarg, 0, 0);
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105 continue;
359
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106 case '?':
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107 default:
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108 usage: fprintf(stderr,
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109 "usage: %s [options] ttyport\n", argv[0]);
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110 exit(1);
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111 }
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112 if (argc - optind != 1)
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113 goto usage;
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114 open_target_serial(argv[optind]);
418
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115 target_tty_port = argv[optind];
359
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116
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117 set_serial_nonblock(0);
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118 setlinebuf(stdout);
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119 if (logfname) {
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120 logF = fopen(logfname, "w");
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121 if (!logF) {
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122 perror(logfname);
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123 exit(1);
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124 }
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125 setlinebuf(logF);
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126 fprintf(logF, "*** Log of TFC139 break-in session ***\n");
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127 }
361
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128 time(&logtime);
359
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129 output_line("Sending IRAM payload");
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130 send_compal_memwrite(iram_load_addr, iram_payload, sizeof iram_payload);
360
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
131 stack_smash_payload[0] = iram_load_addr;
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
132 stack_smash_payload[1] = iram_load_addr >> 8;
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
133 stack_smash_payload[2] = iram_load_addr >> 16;
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
134 stack_smash_payload[3] = iram_load_addr >> 24;
359
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
135 for (;;) {
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
136 FD_ZERO(&fds);
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
137 FD_SET(target_fd, &fds);
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
138 c = select(target_fd+1, &fds, 0, 0, 0);
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
139 time(&logtime);
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
140 if (c < 0) {
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
141 if (errno == EINTR)
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
142 continue;
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
143 perror("select");
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
144 exit(1);
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
145 }
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
146 if (FD_ISSET(target_fd, &fds))
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
147 process_serial_rx();
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
148 }
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
149 }
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
150
360
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
151 static void
975
0d7cc054ef72 rvinterf/lowlevel: updates for the new knowledge of TM predating ETM
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents: 432
diff changeset
152 handle_tm_response()
360
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
153 {
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
154 char msgbuf[80];
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
155
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
156 if (rxpkt_len != 4 || rxpkt[1] != 0x40 || rxpkt[2] || rxpkt[3] != 0x40){
975
0d7cc054ef72 rvinterf/lowlevel: updates for the new knowledge of TM predating ETM
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents: 432
diff changeset
157 output_line("TM response differs from expected");
360
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
158 return;
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
159 }
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
160 sprintf(msgbuf, "Sending stack smash write at 0x%x", stack_smash_addr);
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
161 output_line(msgbuf);
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
162 send_compal_memwrite(stack_smash_addr, stack_smash_payload, 4);
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
163 stack_smash_addr += 4;
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
164 }
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
165
359
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
166 handle_rx_packet()
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
167 {
360
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
168 if (rxpkt_len == 2 && rxpkt[0] == 'O' && rxpkt[1] == 'K') {
418
a9bf3e92a30c tfc139: clean exit on success
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 361
diff changeset
169 output_line(
a9bf3e92a30c tfc139: clean exit on success
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 361
diff changeset
170 "Success: target should now be in boot ROM download wait");
a9bf3e92a30c tfc139: clean exit on success
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 361
diff changeset
171 printf("You can now run fc-loadtool -h compal -c none %s\n",
a9bf3e92a30c tfc139: clean exit on success
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 361
diff changeset
172 target_tty_port);
a9bf3e92a30c tfc139: clean exit on success
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 361
diff changeset
173 exit(0);
360
f9d78057d766 tfc139 hack works!
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 359
diff changeset
174 }
359
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
175 switch (rxpkt[0]) {
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
176 case RVT_RV_HEADER:
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
177 if (rxpkt_len < 6)
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
178 goto unknown;
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
179 print_rv_trace();
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
180 return;
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
181 case RVT_L1_HEADER:
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
182 print_l1_trace();
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
183 return;
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
184 case RVT_L23_HEADER:
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
185 print_g23_trace();
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
186 return;
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
187 case RVT_TM_HEADER:
975
0d7cc054ef72 rvinterf/lowlevel: updates for the new knowledge of TM predating ETM
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents: 432
diff changeset
188 print_tm_output_raw();
0d7cc054ef72 rvinterf/lowlevel: updates for the new knowledge of TM predating ETM
Mychaela Falconia <falcon@ivan.Harhan.ORG>
parents: 432
diff changeset
189 handle_tm_response();
359
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
190 return;
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
191 default:
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
192 unknown:
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
193 print_unknown_packet();
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
194 }
144b5d222de8 tfc139 hack utility started, compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
195 }