FreeCalypso > hg > freecalypso-sw
annotate loadtools/hwparam.c @ 44:5ca0ad4003a0
fc-xram: cosmetic fix
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Mon, 17 Jun 2013 07:32:29 +0000 |
parents | 768a3d012931 |
children | 278052b6afda |
rev | line source |
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1 /* |
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2 * This module contains the code that reads the hardware parameter files |
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3 * specified with -h or -H, and sets variables for later use by other code. |
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4 */ |
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5 |
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6 #include <sys/param.h> |
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7 #include <stdio.h> |
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8 #include <ctype.h> |
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9 #include <string.h> |
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10 #include <strings.h> |
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11 #include <stdlib.h> |
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12 |
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13 extern char default_helpers_dir[]; |
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14 |
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15 extern void set_default_exit_mode(); |
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16 |
17
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17 char hw_init_script[128]; |
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18 |
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19 static void |
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20 handle_init_script(arg, filename_for_errs, lineno_for_errs) |
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21 char *arg; |
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22 char *filename_for_errs; |
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23 int lineno_for_errs; |
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24 { |
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25 char *cp; |
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26 |
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27 while (isspace(*arg)) |
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28 arg++; |
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29 if (!*arg) { |
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30 fprintf(stderr, |
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31 "%s line %d: init-script setting requires an argument\n", |
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32 filename_for_errs, lineno_for_errs); |
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33 exit(1); |
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34 } |
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35 for (cp = arg; *cp && !isspace(*cp); cp++) |
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36 ; |
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37 *cp = '\0'; |
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38 if (cp - arg > sizeof(hw_init_script) - 1) { |
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39 fprintf(stderr, |
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40 "%s line %d: init-script argument is too long (buffer overflow)\n", |
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41 filename_for_errs, lineno_for_errs); |
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42 exit(1); |
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43 } |
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44 strcpy(hw_init_script, arg); |
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45 } |
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46 |
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47 static void |
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48 handle_pll_config(arg, filename_for_errs, lineno_for_errs) |
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49 char *arg; |
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50 char *filename_for_errs; |
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51 int lineno_for_errs; |
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52 { |
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53 int mult, div; |
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54 |
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55 while (isspace(*arg)) |
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56 arg++; |
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57 if (!isdigit(*arg)) { |
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58 inv: fprintf(stderr, "%s line %d: pll-config argument must be M/N\n", |
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59 filename_for_errs, lineno_for_errs); |
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60 exit(1); |
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61 } |
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62 mult = atoi(arg); |
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63 arg++; |
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64 if (isdigit(*arg)) |
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65 arg++; |
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66 if (*arg++ != '/') |
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67 goto inv; |
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68 if (!isdigit(*arg)) |
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69 goto inv; |
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70 div = atoi(arg); |
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71 arg++; |
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72 if (*arg && !isspace(*arg)) |
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73 goto inv; |
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74 if (mult < 0 || mult > 31 || div < 1 || div > 4) { |
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75 fprintf(stderr, |
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76 "%s line %d: pll-config argument is out of range\n", |
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77 filename_for_errs, lineno_for_errs); |
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78 exit(1); |
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79 } |
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80 set_romload_pll_conf((mult << 2) | (div - 1)); |
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81 } |
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82 |
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83 static void |
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84 handle_rhea_cntl(arg, filename_for_errs, lineno_for_errs) |
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85 char *arg; |
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86 char *filename_for_errs; |
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87 int lineno_for_errs; |
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88 { |
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89 int byte; |
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90 |
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91 while (isspace(*arg)) |
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92 arg++; |
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93 if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X')) |
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94 arg += 2; |
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95 byte = decode_hex_byte(arg); |
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96 if (byte < 0 || arg[2] && !isspace(arg[2])) { |
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97 fprintf(stderr, |
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98 "%s line %d: rhea-cntl argument must be a hex byte value\n", |
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99 filename_for_errs, lineno_for_errs); |
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100 exit(1); |
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101 } |
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102 set_romload_rhea_cntl(byte); |
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103 } |
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104 |
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105 static struct cmdtab { |
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106 char *name; |
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107 void (*func)(); |
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108 } cmdtab[] = { |
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109 {"exit-mode", set_default_exit_mode}, |
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110 {"init-script", handle_init_script}, |
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111 {"pll-config", handle_pll_config}, |
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112 {"rhea-cntl", handle_rhea_cntl}, |
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113 {0, 0} |
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114 }; |
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115 |
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116 void |
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117 read_hwparam_file_fullpath(filename) |
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118 char *filename; |
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119 { |
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120 FILE *f; |
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121 char linebuf[512]; |
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122 int lineno; |
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123 char *cp, *np; |
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124 struct cmdtab *tp; |
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125 |
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126 f = fopen(filename, "r"); |
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127 if (!f) { |
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128 perror(filename); |
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129 exit(1); |
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130 } |
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131 for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) { |
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132 for (cp = linebuf; isspace(*cp); cp++) |
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133 ; |
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134 if (!*cp || *cp == '#') |
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135 continue; |
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136 for (np = cp; *cp && !isspace(*cp); cp++) |
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137 ; |
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138 if (*cp) |
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139 *cp++ = '\0'; |
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140 for (tp = cmdtab; tp->name; tp++) |
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141 if (!strcmp(tp->name, np)) |
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142 break; |
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143 if (tp->func) |
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144 tp->func(cp, filename, lineno); |
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145 else { |
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146 fprintf(stderr, |
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147 "%s line %d: setting \"%s\" not understood\n", |
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148 filename, lineno, np); |
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149 exit(1); |
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150 } |
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151 } |
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152 fclose(f); |
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153 } |
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154 |
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155 void |
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156 read_hwparam_file_shortname(confname) |
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157 char *confname; |
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158 { |
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159 char pathname[MAXPATHLEN]; |
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160 |
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161 sprintf(pathname, "%s/%s.config", default_helpers_dir, confname); |
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162 read_hwparam_file_fullpath(pathname); |
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163 } |