FreeCalypso > hg > freecalypso-tools

annotate rvinterf/etmsync/interf.c @ 416:30f6d1c32c6f

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doc/Flash-boot-defect article removed (no longer relevant) This article is no longer relevant because the issue in question only affected one (1) defective FCDEV3B board which was not and never will be sold.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 26 Oct 2018 07:11:08 +0000
parents e7502631a0f9
children
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0
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * In this module we implement our synchronous interface to the target
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Mychaela Falconia <falcon@freecalypso.org>
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3 * via rvinterf.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <stdio.h>
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Mychaela Falconia <falcon@freecalypso.org>
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8 #include <stdlib.h>
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Mychaela Falconia <falcon@freecalypso.org>
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9 #include <unistd.h>
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Mychaela Falconia <falcon@freecalypso.org>
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10 #include "limits.h"
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Mychaela Falconia <falcon@freecalypso.org>
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11 #include "localsock.h"
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Mychaela Falconia <falcon@freecalypso.org>
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12 #include "pktmux.h"
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Mychaela Falconia <falcon@freecalypso.org>
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13 #include "exitcodes.h"
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14
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15 extern int sock;
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Mychaela Falconia <falcon@freecalypso.org>
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16
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Mychaela Falconia <falcon@freecalypso.org>
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17 int rx_enable_state;
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Mychaela Falconia <falcon@freecalypso.org>
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18 u_char rvi_msg[LOCALSOCK_MAX_MSG];
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Mychaela Falconia <falcon@freecalypso.org>
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19 int rvi_msg_len;
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20
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21 static void
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Mychaela Falconia <falcon@freecalypso.org>
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22 collect_bytes_from_rvi(buf, nbytes)
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Mychaela Falconia <falcon@freecalypso.org>
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23 u_char *buf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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24 {
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Mychaela Falconia <falcon@freecalypso.org>
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25 int cc;
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Mychaela Falconia <falcon@freecalypso.org>
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26
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Mychaela Falconia <falcon@freecalypso.org>
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27 while (nbytes) {
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Mychaela Falconia <falcon@freecalypso.org>
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28 cc = read(sock, buf, nbytes);
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Mychaela Falconia <falcon@freecalypso.org>
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29 if (cc <= 0) {
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Mychaela Falconia <falcon@freecalypso.org>
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30 perror("read from rvinterf socket");
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Mychaela Falconia <falcon@freecalypso.org>
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31 exit(ERROR_RVINTERF);
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Mychaela Falconia <falcon@freecalypso.org>
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32 }
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Mychaela Falconia <falcon@freecalypso.org>
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33 buf += cc;
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Mychaela Falconia <falcon@freecalypso.org>
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34 nbytes -= cc;
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35 }
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36 }
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37
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38 collect_rvi_msg()
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39 {
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Mychaela Falconia <falcon@freecalypso.org>
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40 u_char lenbuf[2];
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41
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Mychaela Falconia <falcon@freecalypso.org>
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42 collect_bytes_from_rvi(lenbuf, 2);
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Mychaela Falconia <falcon@freecalypso.org>
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43 rvi_msg_len = lenbuf[0] << 8 | lenbuf[1];
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Mychaela Falconia <falcon@freecalypso.org>
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44 if (rvi_msg_len < 1 || rvi_msg_len > LOCALSOCK_MAX_MSG) {
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Mychaela Falconia <falcon@freecalypso.org>
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45 fprintf(stderr, "Invalid length from rvinterf: %02X%02X\n",
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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46 lenbuf[0], lenbuf[1]);
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Mychaela Falconia <falcon@freecalypso.org>
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47 exit(ERROR_RVINTERF);
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48 }
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49 collect_bytes_from_rvi(rvi_msg, rvi_msg_len);
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Mychaela Falconia <falcon@freecalypso.org>
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50 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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51 }
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52
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Mychaela Falconia <falcon@freecalypso.org>
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53 send_rvimisc_command(cmdpkt, cmdlen)
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Mychaela Falconia <falcon@freecalypso.org>
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54 u_char *cmdpkt;
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Mychaela Falconia <falcon@freecalypso.org>
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55 {
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Mychaela Falconia <falcon@freecalypso.org>
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56 u_char lenbuf[2];
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57
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58 lenbuf[0] = 0;
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59 lenbuf[1] = cmdlen;
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Mychaela Falconia <falcon@freecalypso.org>
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60 write(sock, lenbuf, 2);
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61 write(sock, cmdpkt, cmdlen);
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62 }
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63
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64 rx_control(enable)
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65 {
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66 u_char cmdpkt[2];
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Mychaela Falconia <falcon@freecalypso.org>
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67 int cmdlen;
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68
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69 /* are we already in the desired state? */
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70 if (rx_enable_state == enable)
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Mychaela Falconia <falcon@freecalypso.org>
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71 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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72 /* no, do the work */
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Mychaela Falconia <falcon@freecalypso.org>
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73 if (enable) {
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Mychaela Falconia <falcon@freecalypso.org>
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74 cmdpkt[0] = CLI2RVI_WANT_MUXPROTO;
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Mychaela Falconia <falcon@freecalypso.org>
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75 cmdpkt[1] = RVT_TM_HEADER;
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Mychaela Falconia <falcon@freecalypso.org>
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76 cmdlen = 2;
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77 } else {
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78 cmdpkt[0] = CLI2RVI_RESET_PACKET_RX;
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79 cmdlen = 1;
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80 }
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Mychaela Falconia <falcon@freecalypso.org>
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81 send_rvimisc_command(cmdpkt, cmdlen);
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Mychaela Falconia <falcon@freecalypso.org>
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82 collect_rvi_msg();
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Mychaela Falconia <falcon@freecalypso.org>
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83 if (rvi_msg[0] != RVI2CLI_LOCAL_CMD_RESP || rvi_msg_len < 2) {
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84 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
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85 "error: unexpected response to rvinterf local command\n");
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86 exit(ERROR_RVINTERF);
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87 }
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Mychaela Falconia <falcon@freecalypso.org>
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88 if (rvi_msg[1] != '+') {
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Mychaela Falconia <falcon@freecalypso.org>
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89 fprintf(stderr, "Error from rvinterf: %.*s\n", rvi_msg_len - 1,
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Mychaela Falconia <falcon@freecalypso.org>
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90 rvi_msg + 1);
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Mychaela Falconia <falcon@freecalypso.org>
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91 exit(ERROR_RVINTERF);
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Mychaela Falconia <falcon@freecalypso.org>
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92 }
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93 rx_enable_state = enable;
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Mychaela Falconia <falcon@freecalypso.org>
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94 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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95 }
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Mychaela Falconia <falcon@freecalypso.org>
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96
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Mychaela Falconia <falcon@freecalypso.org>
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97 send_pkt_to_target(pkt, pktlen)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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98 u_char *pkt;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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99 {
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Mychaela Falconia <falcon@freecalypso.org>
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100 u_char hdrbuf[3];
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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101 int len1;
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Mychaela Falconia <falcon@freecalypso.org>
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102
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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103 len1 = pktlen + 1;
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Mychaela Falconia <falcon@freecalypso.org>
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104 hdrbuf[0] = len1 >> 8;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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105 hdrbuf[1] = len1 & 0xFF;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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106 hdrbuf[2] = CLI2RVI_PKT_TO_TARGET;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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107 write(sock, hdrbuf, 3);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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108 write(sock, pkt, pktlen);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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109 }
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Mychaela Falconia <falcon@freecalypso.org>
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110
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Mychaela Falconia <falcon@freecalypso.org>
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111 target_pkt_exch(outpkt, outpktlen)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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112 u_char *outpkt;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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113 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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114 rx_control(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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115 send_pkt_to_target(outpkt, outpktlen);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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116 collect_rvi_msg();
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 if (rvi_msg[0] != RVI2CLI_PKT_FROM_TARGET) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 "error: unexpected response type from rvinterf\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 exit(ERROR_RVINTERF);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 return(0);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 etm_pkt_exch(outbuf, outlen)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 u_char *outbuf;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 int i, c;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 outbuf[0] = RVT_TM_HEADER;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 c = 0;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 for (i = 1; i <= outlen; i++)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 c ^= outbuf[i];
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 outbuf[i] = c;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 target_pkt_exch(outbuf, outlen + 2);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 if (rvi_msg[1] != RVT_TM_HEADER) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 printf("error: packet from target is not ETM!\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 if (rvi_msg_len < 5) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 printf("error: ETM response packet is too short\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 c = 0;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 for (i = 2; i < rvi_msg_len; i++)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 c ^= rvi_msg[i];
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 if (c) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 printf("ETM response checksum error!\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 if (rvi_msg[2] != outbuf[1]) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 printf("error: target response is from wrong ETM component\n");
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 return(ERROR_TARGET);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 return(0);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 }