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annotate loadtools/hwparam.c @ 228:3275c8881cb7

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documentation update for the loadtools-r2 release
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 25 Jan 2014 18:16:52 +0000
parents 278052b6afda
children a2210b0361c1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
17
24b88c119465 loadtools: hw parameter file reading implemented
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1 /*
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2 * This module contains the code that reads the hardware parameter files
24b88c119465 loadtools: hw parameter file reading implemented
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3 * specified with -h or -H, and sets variables for later use by other code.
24b88c119465 loadtools: hw parameter file reading implemented
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4 */
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5
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6 #include <sys/param.h>
24b88c119465 loadtools: hw parameter file reading implemented
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7 #include <stdio.h>
24b88c119465 loadtools: hw parameter file reading implemented
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8 #include <ctype.h>
21
67a39d8914a8 starting work on loadtool
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9 #include <string.h>
17
24b88c119465 loadtools: hw parameter file reading implemented
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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
28
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15 extern void set_default_exit_mode();
55
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16 extern void set_flash_device();
28
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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 }
24b88c119465 loadtools: hw parameter file reading implemented
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36 for (cp = arg; *cp && !isspace(*cp); cp++)
24b88c119465 loadtools: hw parameter file reading implemented
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37 ;
24b88c119465 loadtools: hw parameter file reading implemented
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38 *cp = '\0';
24b88c119465 loadtools: hw parameter file reading implemented
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39 if (cp - arg > sizeof(hw_init_script) - 1) {
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40 fprintf(stderr,
24b88c119465 loadtools: hw parameter file reading implemented
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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;
24b88c119465 loadtools: hw parameter file reading implemented
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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[] = {
28
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110 {"exit-mode", set_default_exit_mode},
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111 {"flash", set_flash_device},
17
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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 }