FreeCalypso > hg > freecalypso-tools
annotate loadtools/srecreader.c @ 416:30f6d1c32c6f
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> |
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date | Fri, 26 Oct 2018 07:11:08 +0000 |
parents | e7502631a0f9 |
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0
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1 /* |
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2 * This module contains the functions for reading S-record files. |
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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 <stdint.h> |
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7 #include <stdio.h> |
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8 #include <ctype.h> |
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9 #include <strings.h> |
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10 #include "srecreader.h" |
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11 |
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12 open_srec_file(sr) |
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13 struct srecreader *sr; |
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14 { |
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15 sr->openfile = fopen(sr->filename, "r"); |
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16 if (!sr->openfile) { |
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17 perror(sr->filename); |
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18 return(-1); |
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19 } |
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20 sr->lineno = 0; |
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21 return(0); |
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22 } |
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23 |
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24 static |
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25 srec2bin(sr, asciiline) |
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26 struct srecreader *sr; |
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27 char *asciiline; |
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28 { |
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29 register int i, l, b; |
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30 |
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31 l = decode_hex_byte(asciiline + 2); |
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32 if (l < 1) { |
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33 fprintf(stderr, "%s line %d: S-record length octet is bad\n", |
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34 sr->filename, sr->lineno); |
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35 return(-1); |
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36 } |
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37 sr->record[0] = l; |
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38 for (i = 1; i <= l; i++) { |
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39 b = decode_hex_byte(asciiline + i*2 + 2); |
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40 if (b < 0) { |
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41 fprintf(stderr, |
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42 "%s line %d: S-record hex decode error\n", |
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43 sr->filename, sr->lineno); |
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44 return(-1); |
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45 } |
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46 sr->record[i] = b; |
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47 } |
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48 return(0); |
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49 } |
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50 |
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51 static |
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52 srec_cksum(sr) |
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53 struct srecreader *sr; |
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54 { |
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55 u_char accum; |
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56 register int i, len; |
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57 |
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58 len = sr->record[0] + 1; |
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59 accum = 0; |
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60 for (i = 0; i < len; i++) |
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61 accum += sr->record[i]; |
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62 if (accum != 0xFF) { |
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63 fprintf(stderr, "%s line %d: bad S-record checksum\n", |
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64 sr->filename, sr->lineno); |
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65 return(-1); |
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66 } |
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67 return(0); |
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68 } |
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69 |
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70 read_s_record(sr) |
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71 struct srecreader *sr; |
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72 { |
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73 char asciiline[1024]; |
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74 |
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75 if (!fgets(asciiline, sizeof asciiline, sr->openfile)) { |
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76 fprintf(stderr, "%s: premature EOF after %d S-records\n", |
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77 sr->filename, sr->lineno); |
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78 return(-1); |
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79 } |
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80 sr->lineno++; |
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81 if (asciiline[0] != 'S' || !isdigit(asciiline[1])) { |
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82 fprintf(stderr, "%s line %d: S-record expected\n", |
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83 sr->filename, sr->lineno); |
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84 return(-1); |
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85 } |
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86 sr->record_type = asciiline[1]; |
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87 if (srec2bin(sr, asciiline) < 0) |
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88 return(-1); |
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89 return srec_cksum(sr); |
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90 } |
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91 |
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92 s3s7_get_addr_data(sr) |
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93 struct srecreader *sr; |
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94 { |
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95 if (sr->record[0] < 5) { |
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96 fprintf(stderr, "%s line %d: S%c record is too short\n", |
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97 sr->filename, sr->lineno, sr->record_type); |
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98 return(-1); |
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99 } |
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100 sr->datalen = sr->record[0] - 5; |
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101 sr->addr = ((uint32_t)sr->record[1] << 24) | |
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102 ((uint32_t)sr->record[2] << 16) | |
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103 ((uint32_t)sr->record[3] << 8) | |
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104 (uint32_t)sr->record[4]; |
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105 return(0); |
e7502631a0f9
initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
106 } |