FreeCalypso > hg > freecalypso-sw
annotate loadtools/hwparam.c @ 104:f65df1d640aa
pirexplore: approaching sanity with the LCD
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Mon, 02 Sep 2013 03:07:07 +0000 |
parents | 278052b6afda |
children | a2210b0361c1 |
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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 extern void set_flash_device(); |
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17 |
17
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18 char hw_init_script[128]; |
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19 |
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20 static void |
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21 handle_init_script(arg, filename_for_errs, lineno_for_errs) |
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22 char *arg; |
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23 char *filename_for_errs; |
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24 int lineno_for_errs; |
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25 { |
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26 char *cp; |
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27 |
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28 while (isspace(*arg)) |
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29 arg++; |
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30 if (!*arg) { |
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31 fprintf(stderr, |
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32 "%s line %d: init-script setting requires an argument\n", |
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33 filename_for_errs, lineno_for_errs); |
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34 exit(1); |
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35 } |
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36 for (cp = arg; *cp && !isspace(*cp); cp++) |
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37 ; |
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38 *cp = '\0'; |
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39 if (cp - arg > sizeof(hw_init_script) - 1) { |
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40 fprintf(stderr, |
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41 "%s line %d: init-script argument is too long (buffer overflow)\n", |
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42 filename_for_errs, lineno_for_errs); |
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43 exit(1); |
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44 } |
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45 strcpy(hw_init_script, arg); |
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46 } |
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47 |
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48 static void |
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49 handle_pll_config(arg, filename_for_errs, lineno_for_errs) |
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50 char *arg; |
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51 char *filename_for_errs; |
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52 int lineno_for_errs; |
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53 { |
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54 int mult, div; |
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55 |
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56 while (isspace(*arg)) |
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57 arg++; |
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58 if (!isdigit(*arg)) { |
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59 inv: fprintf(stderr, "%s line %d: pll-config argument must be M/N\n", |
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60 filename_for_errs, lineno_for_errs); |
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61 exit(1); |
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62 } |
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63 mult = atoi(arg); |
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64 arg++; |
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65 if (isdigit(*arg)) |
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66 arg++; |
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67 if (*arg++ != '/') |
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68 goto inv; |
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69 if (!isdigit(*arg)) |
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70 goto inv; |
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71 div = atoi(arg); |
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72 arg++; |
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73 if (*arg && !isspace(*arg)) |
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74 goto inv; |
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75 if (mult < 0 || mult > 31 || div < 1 || div > 4) { |
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76 fprintf(stderr, |
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77 "%s line %d: pll-config argument is out of range\n", |
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78 filename_for_errs, lineno_for_errs); |
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79 exit(1); |
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80 } |
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81 set_romload_pll_conf((mult << 2) | (div - 1)); |
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82 } |
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83 |
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84 static void |
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85 handle_rhea_cntl(arg, filename_for_errs, lineno_for_errs) |
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86 char *arg; |
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87 char *filename_for_errs; |
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88 int lineno_for_errs; |
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89 { |
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90 int byte; |
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91 |
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92 while (isspace(*arg)) |
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93 arg++; |
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94 if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X')) |
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95 arg += 2; |
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96 byte = decode_hex_byte(arg); |
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97 if (byte < 0 || arg[2] && !isspace(arg[2])) { |
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98 fprintf(stderr, |
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99 "%s line %d: rhea-cntl argument must be a hex byte value\n", |
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100 filename_for_errs, lineno_for_errs); |
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101 exit(1); |
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102 } |
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103 set_romload_rhea_cntl(byte); |
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104 } |
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105 |
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106 static struct cmdtab { |
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107 char *name; |
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108 void (*func)(); |
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109 } cmdtab[] = { |
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110 {"exit-mode", set_default_exit_mode}, |
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111 {"flash", set_flash_device}, |
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112 {"init-script", handle_init_script}, |
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113 {"pll-config", handle_pll_config}, |
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114 {"rhea-cntl", handle_rhea_cntl}, |
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115 {0, 0} |
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116 }; |
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117 |
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118 void |
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119 read_hwparam_file_fullpath(filename) |
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120 char *filename; |
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121 { |
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122 FILE *f; |
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123 char linebuf[512]; |
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124 int lineno; |
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125 char *cp, *np; |
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126 struct cmdtab *tp; |
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127 |
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128 f = fopen(filename, "r"); |
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129 if (!f) { |
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130 perror(filename); |
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131 exit(1); |
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132 } |
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133 for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) { |
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134 for (cp = linebuf; isspace(*cp); cp++) |
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135 ; |
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136 if (!*cp || *cp == '#') |
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137 continue; |
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138 for (np = cp; *cp && !isspace(*cp); cp++) |
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139 ; |
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140 if (*cp) |
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141 *cp++ = '\0'; |
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142 for (tp = cmdtab; tp->name; tp++) |
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143 if (!strcmp(tp->name, np)) |
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144 break; |
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145 if (tp->func) |
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146 tp->func(cp, filename, lineno); |
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147 else { |
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148 fprintf(stderr, |
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149 "%s line %d: setting \"%s\" not understood\n", |
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150 filename, lineno, np); |
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151 exit(1); |
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152 } |
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153 } |
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154 fclose(f); |
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155 } |
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156 |
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157 void |
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158 read_hwparam_file_shortname(confname) |
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159 char *confname; |
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160 { |
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161 char pathname[MAXPATHLEN]; |
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162 |
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163 sprintf(pathname, "%s/%s.config", default_helpers_dir, confname); |
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164 read_hwparam_file_fullpath(pathname); |
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165 } |