FreeCalypso > hg > freecalypso-sw

annotate loadtools/hwparam.c @ 21:67a39d8914a8

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starting work on loadtool
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 04 May 2013 03:47:40 +0000
parents 24b88c119465
children 768a3d012931
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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diff changeset
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.
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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>
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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diff changeset
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
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15 char hw_init_script[128];
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16
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17 static void
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18 handle_init_script(arg, filename_for_errs, lineno_for_errs)
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19 char *arg;
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20 char *filename_for_errs;
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21 int lineno_for_errs;
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22 {
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23 char *cp;
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24
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25 while (isspace(*arg))
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26 arg++;
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27 if (!*arg) {
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28 fprintf(stderr,
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29 "%s line %d: init-script setting requires an argument\n",
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30 filename_for_errs, lineno_for_errs);
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31 exit(1);
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32 }
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33 for (cp = arg; *cp && !isspace(*cp); cp++)
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34 ;
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35 *cp = '\0';
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36 if (cp - arg > sizeof(hw_init_script) - 1) {
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37 fprintf(stderr,
24b88c119465 loadtools: hw parameter file reading implemented
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38 "%s line %d: init-script argument is too long (buffer overflow)\n",
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39 filename_for_errs, lineno_for_errs);
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40 exit(1);
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41 }
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42 strcpy(hw_init_script, arg);
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43 }
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44
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45 static void
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46 handle_pll_config(arg, filename_for_errs, lineno_for_errs)
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47 char *arg;
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48 char *filename_for_errs;
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49 int lineno_for_errs;
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50 {
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51 int mult, div;
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52
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53 while (isspace(*arg))
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54 arg++;
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55 if (!isdigit(*arg)) {
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56 inv: fprintf(stderr, "%s line %d: pll-config argument must be M/N\n",
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57 filename_for_errs, lineno_for_errs);
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58 exit(1);
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59 }
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60 mult = atoi(arg);
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61 arg++;
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62 if (isdigit(*arg))
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63 arg++;
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64 if (*arg++ != '/')
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65 goto inv;
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66 if (!isdigit(*arg))
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67 goto inv;
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68 div = atoi(arg);
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69 arg++;
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70 if (*arg && !isspace(*arg))
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71 goto inv;
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72 if (mult < 0 || mult > 31 || div < 1 || div > 4) {
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73 fprintf(stderr,
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74 "%s line %d: pll-config argument is out of range\n",
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75 filename_for_errs, lineno_for_errs);
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76 exit(1);
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77 }
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78 set_romload_pll_conf((mult << 2) | (div - 1));
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79 }
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80
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81 static void
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82 handle_rhea_cntl(arg, filename_for_errs, lineno_for_errs)
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83 char *arg;
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84 char *filename_for_errs;
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85 int lineno_for_errs;
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86 {
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87 int byte;
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88
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89 while (isspace(*arg))
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90 arg++;
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91 if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X'))
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92 arg += 2;
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93 byte = decode_hex_byte(arg);
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94 if (byte < 0 || arg[2] && !isspace(arg[2])) {
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95 fprintf(stderr,
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96 "%s line %d: rhea-cntl argument must be a hex byte value\n",
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97 filename_for_errs, lineno_for_errs);
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98 exit(1);
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99 }
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100 set_romload_rhea_cntl(byte);
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101 }
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102
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103 static struct cmdtab {
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104 char *name;
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105 void (*func)();
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106 } cmdtab[] = {
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107 {"init-script", handle_init_script},
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108 {"pll-config", handle_pll_config},
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109 {"rhea-cntl", handle_rhea_cntl},
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110 {0, 0}
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111 };
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112
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113 void
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114 read_hwparam_file_fullpath(filename)
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115 char *filename;
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116 {
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117 FILE *f;
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118 char linebuf[512];
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119 int lineno;
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120 char *cp, *np;
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121 struct cmdtab *tp;
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122
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123 f = fopen(filename, "r");
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124 if (!f) {
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125 perror(filename);
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126 exit(1);
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127 }
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128 for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) {
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129 for (cp = linebuf; isspace(*cp); cp++)
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130 ;
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131 if (!*cp || *cp == '#')
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132 continue;
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133 for (np = cp; *cp && !isspace(*cp); cp++)
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134 ;
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135 if (*cp)
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136 *cp++ = '\0';
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137 for (tp = cmdtab; tp->name; tp++)
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138 if (!strcmp(tp->name, np))
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139 break;
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140 if (tp->func)
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141 tp->func(cp, filename, lineno);
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142 else {
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143 fprintf(stderr,
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144 "%s line %d: setting \"%s\" not understood\n",
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145 filename, lineno, np);
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146 exit(1);
24b88c119465 loadtools: hw parameter file reading implemented
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147 }
24b88c119465 loadtools: hw parameter file reading implemented
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148 }
24b88c119465 loadtools: hw parameter file reading implemented
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149 fclose(f);
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150 }
24b88c119465 loadtools: hw parameter file reading implemented
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151
24b88c119465 loadtools: hw parameter file reading implemented
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152 void
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153 read_hwparam_file_shortname(confname)
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154 char *confname;
24b88c119465 loadtools: hw parameter file reading implemented
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155 {
24b88c119465 loadtools: hw parameter file reading implemented
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156 char pathname[MAXPATHLEN];
24b88c119465 loadtools: hw parameter file reading implemented
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157
24b88c119465 loadtools: hw parameter file reading implemented
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158 sprintf(pathname, "%s/%s.config", default_helpers_dir, confname);
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159 read_hwparam_file_fullpath(pathname);
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160 }