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1 /* |
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2 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005. |
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3 * |
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4 * |
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5 * This program is free software; you can redistribute it and/or |
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6 * modify it under the terms of the GNU General Public License as |
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7 * published by the Free Software Foundation; either version 2 of the |
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8 * License, or (at your option) any later version. |
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9 * |
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10 * This program is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 * General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU General Public License |
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16 * along with this program; if not, write to the Free Software |
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17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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18 * USA |
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19 */ |
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20 |
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21 %locations |
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22 |
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23 %{ |
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24 #include <stdio.h> |
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25 |
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26 #include "dtc.h" |
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27 #include "srcpos.h" |
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28 |
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29 extern int yylex(void); |
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30 |
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31 extern struct boot_info *the_boot_info; |
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32 extern int treesource_error; |
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33 |
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34 static unsigned long long eval_literal(const char *s, int base, int bits); |
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35 %} |
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36 |
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37 %union { |
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38 char *propnodename; |
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39 char *literal; |
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40 char *labelref; |
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41 unsigned int cbase; |
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42 uint8_t byte; |
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43 struct data data; |
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44 |
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45 uint64_t addr; |
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46 cell_t cell; |
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47 struct property *prop; |
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48 struct property *proplist; |
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49 struct node *node; |
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50 struct node *nodelist; |
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51 struct reserve_info *re; |
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52 } |
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53 |
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54 %token DT_V1 |
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55 %token DT_MEMRESERVE |
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56 %token <propnodename> DT_PROPNODENAME |
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57 %token <literal> DT_LITERAL |
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58 %token <literal> DT_LEGACYLITERAL |
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59 %token <cbase> DT_BASE |
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60 %token <byte> DT_BYTE |
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61 %token <data> DT_STRING |
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62 %token <labelref> DT_LABEL |
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63 %token <labelref> DT_REF |
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64 %token DT_INCBIN |
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65 |
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66 %type <data> propdata |
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67 %type <data> propdataprefix |
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68 %type <re> memreserve |
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69 %type <re> memreserves |
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70 %type <re> v0_memreserve |
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71 %type <re> v0_memreserves |
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72 %type <addr> addr |
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73 %type <data> celllist |
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74 %type <cbase> cellbase |
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75 %type <cell> cellval |
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76 %type <data> bytestring |
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77 %type <prop> propdef |
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78 %type <proplist> proplist |
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79 |
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80 %type <node> devicetree |
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81 %type <node> nodedef |
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82 %type <node> subnode |
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83 %type <nodelist> subnodes |
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84 %type <labelref> label |
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85 |
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86 %% |
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87 |
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88 sourcefile: |
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89 DT_V1 ';' memreserves devicetree |
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90 { |
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91 the_boot_info = build_boot_info($3, $4, 0); |
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92 } |
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93 | v0_memreserves devicetree |
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94 { |
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95 the_boot_info = build_boot_info($1, $2, 0); |
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96 } |
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97 ; |
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98 |
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99 memreserves: |
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100 /* empty */ |
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101 { |
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102 $$ = NULL; |
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103 } |
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104 | memreserve memreserves |
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105 { |
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106 $$ = chain_reserve_entry($1, $2); |
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107 } |
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108 ; |
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109 |
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110 memreserve: |
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111 label DT_MEMRESERVE addr addr ';' |
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112 { |
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113 $$ = build_reserve_entry($3, $4, $1); |
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114 } |
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115 ; |
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116 |
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117 v0_memreserves: |
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118 /* empty */ |
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119 { |
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120 $$ = NULL; |
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121 } |
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122 | v0_memreserve v0_memreserves |
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123 { |
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124 $$ = chain_reserve_entry($1, $2); |
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125 }; |
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126 ; |
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127 |
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128 v0_memreserve: |
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129 memreserve |
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130 { |
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131 $$ = $1; |
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132 } |
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133 | label DT_MEMRESERVE addr '-' addr ';' |
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134 { |
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135 $$ = build_reserve_entry($3, $5 - $3 + 1, $1); |
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136 } |
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137 ; |
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138 |
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139 addr: |
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140 DT_LITERAL |
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141 { |
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142 $$ = eval_literal($1, 0, 64); |
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143 } |
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144 | DT_LEGACYLITERAL |
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145 { |
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146 $$ = eval_literal($1, 16, 64); |
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147 } |
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148 ; |
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149 |
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150 devicetree: |
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151 '/' nodedef |
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152 { |
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153 $$ = name_node($2, "", NULL); |
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154 } |
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155 ; |
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156 |
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157 nodedef: |
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158 '{' proplist subnodes '}' ';' |
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159 { |
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160 $$ = build_node($2, $3); |
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161 } |
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162 ; |
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163 |
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164 proplist: |
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165 /* empty */ |
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166 { |
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167 $$ = NULL; |
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168 } |
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169 | proplist propdef |
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170 { |
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171 $$ = chain_property($2, $1); |
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172 } |
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173 ; |
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174 |
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175 propdef: |
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176 label DT_PROPNODENAME '=' propdata ';' |
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177 { |
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178 $$ = build_property($2, $4, $1); |
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179 } |
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180 | label DT_PROPNODENAME ';' |
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181 { |
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182 $$ = build_property($2, empty_data, $1); |
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183 } |
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184 ; |
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185 |
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186 propdata: |
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187 propdataprefix DT_STRING |
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188 { |
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189 $$ = data_merge($1, $2); |
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190 } |
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191 | propdataprefix '<' celllist '>' |
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192 { |
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193 $$ = data_merge($1, $3); |
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194 } |
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195 | propdataprefix '[' bytestring ']' |
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196 { |
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197 $$ = data_merge($1, $3); |
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198 } |
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199 | propdataprefix DT_REF |
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200 { |
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201 $$ = data_add_marker($1, REF_PATH, $2); |
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202 } |
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203 | propdataprefix DT_INCBIN '(' DT_STRING ',' addr ',' addr ')' |
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204 { |
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205 struct search_path path = { srcpos_file->dir, NULL, NULL }; |
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206 struct dtc_file *file = dtc_open_file($4.val, &path); |
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207 struct data d = empty_data; |
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208 |
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209 if ($6 != 0) |
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210 if (fseek(file->file, $6, SEEK_SET) != 0) |
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211 yyerrorf("Couldn't seek to offset %llu in \"%s\": %s", |
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212 (unsigned long long)$6, |
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213 $4.val, strerror(errno)); |
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214 |
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215 d = data_copy_file(file->file, $8); |
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216 |
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217 $$ = data_merge($1, d); |
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218 dtc_close_file(file); |
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219 } |
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220 | propdataprefix DT_INCBIN '(' DT_STRING ')' |
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221 { |
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222 struct search_path path = { srcpos_file->dir, NULL, NULL }; |
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223 struct dtc_file *file = dtc_open_file($4.val, &path); |
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224 struct data d = empty_data; |
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225 |
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226 d = data_copy_file(file->file, -1); |
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227 |
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228 $$ = data_merge($1, d); |
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229 dtc_close_file(file); |
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230 } |
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231 | propdata DT_LABEL |
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232 { |
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233 $$ = data_add_marker($1, LABEL, $2); |
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234 } |
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235 ; |
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236 |
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237 propdataprefix: |
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238 /* empty */ |
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239 { |
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240 $$ = empty_data; |
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241 } |
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242 | propdata ',' |
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243 { |
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244 $$ = $1; |
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245 } |
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246 | propdataprefix DT_LABEL |
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247 { |
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248 $$ = data_add_marker($1, LABEL, $2); |
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249 } |
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250 ; |
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251 |
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252 celllist: |
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253 /* empty */ |
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254 { |
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255 $$ = empty_data; |
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256 } |
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257 | celllist cellval |
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258 { |
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259 $$ = data_append_cell($1, $2); |
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260 } |
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261 | celllist DT_REF |
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262 { |
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263 $$ = data_append_cell(data_add_marker($1, REF_PHANDLE, |
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264 $2), -1); |
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265 } |
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266 | celllist DT_LABEL |
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267 { |
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268 $$ = data_add_marker($1, LABEL, $2); |
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269 } |
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270 ; |
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271 |
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272 cellbase: |
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273 /* empty */ |
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274 { |
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275 $$ = 16; |
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276 } |
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277 | DT_BASE |
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278 ; |
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279 |
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280 cellval: |
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281 DT_LITERAL |
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282 { |
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283 $$ = eval_literal($1, 0, 32); |
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284 } |
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285 | cellbase DT_LEGACYLITERAL |
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286 { |
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287 $$ = eval_literal($2, $1, 32); |
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288 } |
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289 ; |
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290 |
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291 bytestring: |
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292 /* empty */ |
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293 { |
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294 $$ = empty_data; |
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295 } |
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296 | bytestring DT_BYTE |
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297 { |
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298 $$ = data_append_byte($1, $2); |
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299 } |
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300 | bytestring DT_LABEL |
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301 { |
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302 $$ = data_add_marker($1, LABEL, $2); |
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303 } |
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304 ; |
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305 |
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306 subnodes: |
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307 /* empty */ |
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308 { |
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309 $$ = NULL; |
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310 } |
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311 | subnode subnodes |
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312 { |
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313 $$ = chain_node($1, $2); |
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314 } |
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315 | subnode propdef |
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316 { |
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317 yyerror("syntax error: properties must precede subnodes"); |
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318 YYERROR; |
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319 } |
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320 ; |
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321 |
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322 subnode: |
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323 label DT_PROPNODENAME nodedef |
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324 { |
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325 $$ = name_node($3, $2, $1); |
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326 } |
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327 ; |
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328 |
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329 label: |
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330 /* empty */ |
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331 { |
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332 $$ = NULL; |
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333 } |
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334 | DT_LABEL |
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335 { |
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336 $$ = $1; |
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337 } |
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338 ; |
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339 |
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340 %% |
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341 |
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342 void yyerrorf(char const *s, ...) |
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343 { |
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344 const char *fname = srcpos_file ? srcpos_file->name : "<no-file>"; |
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345 va_list va; |
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346 va_start(va, s); |
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347 |
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348 if (strcmp(fname, "-") == 0) |
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349 fname = "stdin"; |
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350 |
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351 fprintf(stderr, "%s:%d ", fname, yylloc.first_line); |
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352 vfprintf(stderr, s, va); |
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353 fprintf(stderr, "\n"); |
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354 |
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355 treesource_error = 1; |
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356 va_end(va); |
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357 } |
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358 |
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359 void yyerror (char const *s) |
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360 { |
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361 yyerrorf("%s", s); |
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362 } |
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363 |
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364 static unsigned long long eval_literal(const char *s, int base, int bits) |
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365 { |
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366 unsigned long long val; |
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367 char *e; |
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368 |
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369 errno = 0; |
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370 val = strtoull(s, &e, base); |
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371 if (*e) |
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372 yyerror("bad characters in literal"); |
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373 else if ((errno == ERANGE) |
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374 || ((bits < 64) && (val >= (1ULL << bits)))) |
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375 yyerror("literal out of range"); |
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376 else if (errno != 0) |
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377 yyerror("bad literal"); |
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378 return val; |
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379 } |