FreeCalypso > hg > freecalypso-tools
annotate rvinterf/l1filter/rvif_rx.c @ 992:c4c400c1b10c
fc-loadtool flash: no flash2 ppb-erase-all
All PPBs from across the entire flash chip can only be erased together
as a unit, spanning across both banks on 16 MiB chips - therefore,
we shall disallow 'flash2 ppb-erase-all', and accept 'flash ppb-erase-all'
only.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 03 Dec 2023 04:47:31 +0000 |
parents | ea458ee48691 |
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0
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1 /* |
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2 * This module implements message Rx from rvinterf. |
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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 <stdlib.h> |
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8 #include <unistd.h> |
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9 #include "localsock.h" |
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10 #include "exitcodes.h" |
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11 |
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12 extern int sock; |
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13 |
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14 u_char rvi_msg[LOCALSOCK_MAX_MSG]; |
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15 int rvi_msg_len; |
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16 |
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17 static int rx_state, rx_left; |
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18 static u_char *rx_ptr; |
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19 |
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20 void |
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21 localsock_prep_for_length_rx() |
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22 { |
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23 rx_state = 0; |
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24 rx_ptr = rvi_msg; |
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25 rx_left = 2; |
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26 } |
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27 |
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28 static void |
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29 prep_for_message_rx() |
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30 { |
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31 rx_state = 1; |
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32 rx_ptr = rvi_msg; |
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33 rx_left = rvi_msg_len; |
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34 } |
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35 |
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36 void |
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37 process_msg_from_rvinterf() |
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38 { |
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39 switch (rvi_msg[0]) { |
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40 case RVI2CLI_PKT_FROM_TARGET: |
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41 process_pkt_from_target(); |
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42 return; |
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43 case RVI2CLI_LOCAL_CMD_RESP: |
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44 if (rvi_msg_len < 2) |
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45 goto bad; |
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46 if (rvi_msg[1] == '+') |
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47 return; |
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48 fprintf(stderr, "Error from rvinterf: %.*s\n", rvi_msg_len - 1, |
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49 rvi_msg + 1); |
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50 exit(ERROR_RVINTERF); |
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51 default: |
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52 bad: |
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53 fprintf(stderr, |
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54 "Error: unexpected message type %02X from rvinterf\n", |
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55 rvi_msg[0]); |
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56 exit(ERROR_RVINTERF); |
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57 } |
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58 } |
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59 |
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60 void |
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61 handle_rvinterf_input() |
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62 { |
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63 int cc; |
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64 |
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65 cc = read(sock, rx_ptr, rx_left); |
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66 if (cc <= 0) { |
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67 perror("read from rvinterf socket"); |
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68 exit(ERROR_RVINTERF); |
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69 } |
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70 rx_ptr += cc; |
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71 rx_left -= cc; |
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72 if (rx_left) |
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73 return; |
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74 /* got the thing, process it */ |
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75 if (rx_state) { |
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76 process_msg_from_rvinterf(); |
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77 localsock_prep_for_length_rx(); |
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78 } else { |
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79 rvi_msg_len = rvi_msg[0] << 8 | rvi_msg[1]; |
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80 if (rvi_msg_len < 1 || rvi_msg_len > LOCALSOCK_MAX_MSG) { |
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81 fprintf(stderr, |
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82 "Invalid length from rvinterf: %02X%02X\n", |
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83 rvi_msg[0], rvi_msg[1]); |
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84 exit(ERROR_RVINTERF); |
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85 } |
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86 prep_for_message_rx(); |
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87 } |
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88 } |