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annotate loadtools/hwparam.c @ 1034:405b5469abc4 default tip

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author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 12 Jun 2016 19:06:34 +0000
parents 1ed2d78f150c
children
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
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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>
21
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9 #include <string.h>
17
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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
413
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15 extern void set_boot_reflash_hack();
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16 extern void set_default_exit_mode();
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17 extern void set_flash_device();
28
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18
17
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19 char hw_init_script[128];
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20
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21 static void
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22 handle_compal_stage(arg, filename_for_errs, lineno_for_errs)
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23 char *arg;
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24 char *filename_for_errs;
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25 int lineno_for_errs;
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26 {
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27 char *cp;
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28
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29 while (isspace(*arg))
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30 arg++;
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31 if (!*arg) {
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32 fprintf(stderr,
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33 "%s line %d: compal-stage setting requires an argument\n",
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34 filename_for_errs, lineno_for_errs);
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35 exit(1);
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36 }
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37 for (cp = arg; *cp && !isspace(*cp); cp++)
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38 ;
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39 *cp = '\0';
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40 set_compalstage_short(arg);
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41 }
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42
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43 static void
17
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44 handle_init_script(arg, filename_for_errs, lineno_for_errs)
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45 char *arg;
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46 char *filename_for_errs;
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47 int lineno_for_errs;
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48 {
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49 char *cp;
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50
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51 while (isspace(*arg))
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52 arg++;
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53 if (!*arg) {
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54 fprintf(stderr,
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55 "%s line %d: init-script setting requires an argument\n",
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56 filename_for_errs, lineno_for_errs);
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57 exit(1);
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58 }
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59 for (cp = arg; *cp && !isspace(*cp); cp++)
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60 ;
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61 *cp = '\0';
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62 if (cp - arg > sizeof(hw_init_script) - 1) {
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63 fprintf(stderr,
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64 "%s line %d: init-script argument is too long (buffer overflow)\n",
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65 filename_for_errs, lineno_for_errs);
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66 exit(1);
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67 }
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68 strcpy(hw_init_script, arg);
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69 }
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70
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71 static void
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72 handle_pll_config(arg, filename_for_errs, lineno_for_errs)
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73 char *arg;
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74 char *filename_for_errs;
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75 int lineno_for_errs;
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76 {
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77 int mult, div;
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78
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79 while (isspace(*arg))
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80 arg++;
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81 if (!isdigit(*arg)) {
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82 inv: fprintf(stderr, "%s line %d: pll-config argument must be M/N\n",
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83 filename_for_errs, lineno_for_errs);
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84 exit(1);
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85 }
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86 mult = atoi(arg);
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87 arg++;
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88 if (isdigit(*arg))
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89 arg++;
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90 if (*arg++ != '/')
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91 goto inv;
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92 if (!isdigit(*arg))
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93 goto inv;
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94 div = atoi(arg);
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95 arg++;
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96 if (*arg && !isspace(*arg))
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97 goto inv;
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98 if (mult < 0 || mult > 31 || div < 1 || div > 4) {
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99 fprintf(stderr,
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100 "%s line %d: pll-config argument is out of range\n",
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101 filename_for_errs, lineno_for_errs);
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102 exit(1);
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103 }
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104 set_romload_pll_conf((mult << 2) | (div - 1));
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105 }
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106
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107 static void
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108 handle_rhea_cntl(arg, filename_for_errs, lineno_for_errs)
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109 char *arg;
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110 char *filename_for_errs;
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111 int lineno_for_errs;
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112 {
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113 int byte;
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114
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115 while (isspace(*arg))
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116 arg++;
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117 if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X'))
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118 arg += 2;
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119 byte = decode_hex_byte(arg);
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120 if (byte < 0 || arg[2] && !isspace(arg[2])) {
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121 fprintf(stderr,
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122 "%s line %d: rhea-cntl argument must be a hex byte value\n",
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123 filename_for_errs, lineno_for_errs);
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124 exit(1);
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125 }
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126 set_romload_rhea_cntl(byte);
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127 }
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128
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129 static struct cmdtab {
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130 char *name;
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131 void (*func)();
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132 } cmdtab[] = {
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133 {"boot-reflash-hack", set_boot_reflash_hack},
382
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134 {"compal-stage", handle_compal_stage},
28
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135 {"exit-mode", set_default_exit_mode},
55
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136 {"flash", set_flash_device},
17
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137 {"init-script", handle_init_script},
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138 {"pll-config", handle_pll_config},
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139 {"rhea-cntl", handle_rhea_cntl},
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140 {0, 0}
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141 };
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142
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143 void
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144 read_hwparam_file_fullpath(filename)
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145 char *filename;
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146 {
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147 FILE *f;
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148 char linebuf[512];
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149 int lineno;
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150 char *cp, *np;
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151 struct cmdtab *tp;
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152
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153 f = fopen(filename, "r");
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154 if (!f) {
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155 perror(filename);
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156 exit(1);
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157 }
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158 for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) {
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159 for (cp = linebuf; isspace(*cp); cp++)
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160 ;
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161 if (!*cp || *cp == '#')
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162 continue;
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163 for (np = cp; *cp && !isspace(*cp); cp++)
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164 ;
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165 if (*cp)
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166 *cp++ = '\0';
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167 for (tp = cmdtab; tp->name; tp++)
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168 if (!strcmp(tp->name, np))
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169 break;
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170 if (tp->func)
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171 tp->func(cp, filename, lineno);
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172 else {
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173 fprintf(stderr,
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174 "%s line %d: setting \"%s\" not understood\n",
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175 filename, lineno, np);
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176 exit(1);
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177 }
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178 }
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179 fclose(f);
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180 }
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181
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182 void
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183 read_hwparam_file_shortname(confname)
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184 char *confname;
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185 {
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186 char pathname[MAXPATHLEN];
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187
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188 sprintf(pathname, "%s/%s.config", default_helpers_dir, confname);
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189 read_hwparam_file_fullpath(pathname);
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190 }