FreeCalypso > hg > freecalypso-sw

annotate rvinterf/libasync/ttymagic.c @ 923:10b4bed10192

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gsm-fw/L1: fix for the DSP patch corruption bug The L1 code we got from the LoCosto fw contains a feature for DSP CPU load measurement. This feature is a LoCosto-ism, i.e., not applicable to earlier DBB chips (Calypso) with their respective earlier DSP ROMs. Most of the code dealing with that feature is conditionalized as #if (DSP >= 38), but one spot was missed, and the MCU code was writing into an API word dealing with this feature. In TCS211 this DSP API word happens to be used by the DSP code patch, hence that write was corrupting the patched DSP code.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Mon, 19 Oct 2015 17:13:56 +0000
parents 40b8557b9d04
children
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1 /*
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2 * This module contains the tty "magic" code for fc-tmsh.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <string.h>
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8 #include <strings.h>
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9 #include <stdlib.h>
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10 #include <unistd.h>
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11 #include <termios.h>
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12
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13 extern int ttyhacks;
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14
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15 struct termios orig_termios, our_termios;
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16
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17 #define MAX_USER_CMD 78
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18 char usercmd[MAX_USER_CMD+1];
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19 int usercmd_len;
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20
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21 void
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22 tty_init()
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23 {
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24 if (!ttyhacks)
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25 return;
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26 tcgetattr(0, &orig_termios);
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27 bcopy(&orig_termios, &our_termios, sizeof(struct termios));
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28 our_termios.c_oflag &= ~(OCRNL | ONOCR | ONLRET);
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29 our_termios.c_lflag &= ~(ICANON | ECHO);
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30 our_termios.c_cc[VMIN] = 1;
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31 our_termios.c_cc[VTIME] = 0;
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32 tcsetattr(0, TCSAFLUSH, &our_termios);
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33 putchar('>');
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34 fflush(stdout);
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35 }
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36
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37 void
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38 tty_cleanup()
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39 {
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40 if (!ttyhacks)
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41 return;
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42 tcsetattr(0, TCSAFLUSH, &orig_termios);
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43 }
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44
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45 void
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46 handle_tty_input()
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47 {
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48 char buf[256];
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49 int i, c, cc;
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50
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51 cc = read(0, buf, sizeof buf);
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52 if (cc <= 0) {
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53 tty_cleanup();
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54 exit(0);
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55 }
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56 for (i = 0; i < cc; i++) {
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57 c = buf[i];
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58 if (c >= ' ' && c <= '~') {
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59 if (usercmd_len >= MAX_USER_CMD)
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60 continue;
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61 usercmd[usercmd_len++] = c;
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62 if (ttyhacks)
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63 putchar(c); /* echo */
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64 continue;
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65 }
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66 switch (c) {
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67 case '\b':
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68 case 0x7F:
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69 if (!usercmd_len)
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70 continue;
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71 usercmd_len--;
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72 if (ttyhacks) {
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73 putchar('\b');
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74 putchar(' ');
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75 putchar('\b');
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76 }
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77 continue;
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78 case '\n':
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79 case '\r':
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80 usercmd[usercmd_len] = '\0';
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81 if (ttyhacks)
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82 putchar('\n'); /* echo */
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83 dispatch_user_cmd();
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84 usercmd_len = 0;
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85 if (ttyhacks)
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86 putchar('>'); /* new prompt */
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87 }
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88 }
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89 }
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90
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91 void
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92 async_msg_output(msg)
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93 char *msg;
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94 {
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95 int msglen, i;
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96
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97 msglen = strlen(msg);
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98 if (ttyhacks)
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99 putchar('\r');
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100 fputs(msg, stdout);
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101 if (ttyhacks)
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102 for (i = msglen; i < usercmd_len + 1; i++)
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103 putchar(' ');
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104 putchar('\n');
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105 if (!ttyhacks)
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106 return;
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107 /* reprint the input line */
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108 putchar('>');
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109 if (!usercmd_len)
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110 return;
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111 fwrite(usercmd, 1, usercmd_len, stdout);
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112 }