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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
f858927f RH |
2 | /* |
3 | * (C) Copyright Linaro, Ltd. 2018 | |
4 | * (C) Copyright Arm Holdings. 2017 | |
5 | * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005. | |
f858927f RH |
6 | */ |
7 | ||
8 | #include <stdlib.h> | |
9 | #include <yaml.h> | |
10 | #include "dtc.h" | |
11 | #include "srcpos.h" | |
12 | ||
13 | char *yaml_error_name[] = { | |
14 | [YAML_NO_ERROR] = "no error", | |
15 | [YAML_MEMORY_ERROR] = "memory error", | |
16 | [YAML_READER_ERROR] = "reader error", | |
17 | [YAML_SCANNER_ERROR] = "scanner error", | |
18 | [YAML_PARSER_ERROR] = "parser error", | |
19 | [YAML_COMPOSER_ERROR] = "composer error", | |
20 | [YAML_WRITER_ERROR] = "writer error", | |
21 | [YAML_EMITTER_ERROR] = "emitter error", | |
22 | }; | |
23 | ||
24 | #define yaml_emitter_emit_or_die(emitter, event) ( \ | |
25 | { \ | |
26 | if (!yaml_emitter_emit(emitter, event)) \ | |
27 | die("yaml '%s': %s in %s, line %i\n", \ | |
28 | yaml_error_name[(emitter)->error], \ | |
29 | (emitter)->problem, __func__, __LINE__); \ | |
30 | }) | |
31 | ||
79edff12 | 32 | static void yaml_propval_int(yaml_emitter_t *emitter, struct marker *markers, char *data, unsigned int len, int width) |
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33 | { |
34 | yaml_event_t event; | |
35 | void *tag; | |
79edff12 | 36 | unsigned int off, start_offset = markers->offset; |
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37 | |
38 | switch(width) { | |
39 | case 1: tag = "!u8"; break; | |
40 | case 2: tag = "!u16"; break; | |
41 | case 4: tag = "!u32"; break; | |
42 | case 8: tag = "!u64"; break; | |
43 | default: | |
44 | die("Invalid width %i", width); | |
45 | } | |
46 | assert(len % width == 0); | |
47 | ||
48 | yaml_sequence_start_event_initialize(&event, NULL, | |
49 | (yaml_char_t *)tag, width == 4, YAML_FLOW_SEQUENCE_STYLE); | |
50 | yaml_emitter_emit_or_die(emitter, &event); | |
51 | ||
52 | for (off = 0; off < len; off += width) { | |
53 | char buf[32]; | |
54 | struct marker *m; | |
55 | bool is_phandle = false; | |
56 | ||
57 | switch(width) { | |
58 | case 1: | |
59 | sprintf(buf, "0x%"PRIx8, *(uint8_t*)(data + off)); | |
60 | break; | |
61 | case 2: | |
3eb619b2 | 62 | sprintf(buf, "0x%"PRIx16, dtb_ld16(data + off)); |
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63 | break; |
64 | case 4: | |
3eb619b2 | 65 | sprintf(buf, "0x%"PRIx32, dtb_ld32(data + off)); |
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66 | m = markers; |
67 | is_phandle = false; | |
68 | for_each_marker_of_type(m, REF_PHANDLE) { | |
69 | if (m->offset == (start_offset + off)) { | |
70 | is_phandle = true; | |
71 | break; | |
72 | } | |
73 | } | |
74 | break; | |
75 | case 8: | |
3eb619b2 | 76 | sprintf(buf, "0x%"PRIx64, dtb_ld64(data + off)); |
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77 | break; |
78 | } | |
79 | ||
80 | if (is_phandle) | |
81 | yaml_scalar_event_initialize(&event, NULL, | |
82 | (yaml_char_t*)"!phandle", (yaml_char_t *)buf, | |
83 | strlen(buf), 0, 0, YAML_PLAIN_SCALAR_STYLE); | |
84 | else | |
85 | yaml_scalar_event_initialize(&event, NULL, | |
86 | (yaml_char_t*)YAML_INT_TAG, (yaml_char_t *)buf, | |
87 | strlen(buf), 1, 1, YAML_PLAIN_SCALAR_STYLE); | |
88 | yaml_emitter_emit_or_die(emitter, &event); | |
89 | } | |
90 | ||
91 | yaml_sequence_end_event_initialize(&event); | |
92 | yaml_emitter_emit_or_die(emitter, &event); | |
93 | } | |
94 | ||
95 | static void yaml_propval_string(yaml_emitter_t *emitter, char *str, int len) | |
96 | { | |
97 | yaml_event_t event; | |
98 | int i; | |
99 | ||
100 | assert(str[len-1] == '\0'); | |
101 | ||
102 | /* Make sure the entire string is in the lower 7-bit ascii range */ | |
103 | for (i = 0; i < len; i++) | |
104 | assert(isascii(str[i])); | |
105 | ||
106 | yaml_scalar_event_initialize(&event, NULL, | |
107 | (yaml_char_t *)YAML_STR_TAG, (yaml_char_t*)str, | |
108 | len-1, 0, 1, YAML_DOUBLE_QUOTED_SCALAR_STYLE); | |
109 | yaml_emitter_emit_or_die(emitter, &event); | |
110 | } | |
111 | ||
112 | static void yaml_propval(yaml_emitter_t *emitter, struct property *prop) | |
113 | { | |
114 | yaml_event_t event; | |
79edff12 | 115 | unsigned int len = prop->val.len; |
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116 | struct marker *m = prop->val.markers; |
117 | ||
118 | /* Emit the property name */ | |
119 | yaml_scalar_event_initialize(&event, NULL, | |
120 | (yaml_char_t *)YAML_STR_TAG, (yaml_char_t*)prop->name, | |
121 | strlen(prop->name), 1, 1, YAML_PLAIN_SCALAR_STYLE); | |
122 | yaml_emitter_emit_or_die(emitter, &event); | |
123 | ||
124 | /* Boolean properties are easiest to deal with. Length is zero, so just emit 'true' */ | |
125 | if (len == 0) { | |
126 | yaml_scalar_event_initialize(&event, NULL, | |
127 | (yaml_char_t *)YAML_BOOL_TAG, | |
128 | (yaml_char_t*)"true", | |
129 | strlen("true"), 1, 0, YAML_PLAIN_SCALAR_STYLE); | |
130 | yaml_emitter_emit_or_die(emitter, &event); | |
131 | return; | |
132 | } | |
133 | ||
134 | if (!m) | |
135 | die("No markers present in property '%s' value\n", prop->name); | |
136 | ||
137 | yaml_sequence_start_event_initialize(&event, NULL, | |
138 | (yaml_char_t *)YAML_SEQ_TAG, 1, YAML_FLOW_SEQUENCE_STYLE); | |
139 | yaml_emitter_emit_or_die(emitter, &event); | |
140 | ||
141 | for_each_marker(m) { | |
142 | int chunk_len; | |
143 | char *data = &prop->val.val[m->offset]; | |
144 | ||
145 | if (m->type < TYPE_UINT8) | |
146 | continue; | |
147 | ||
148 | chunk_len = type_marker_length(m) ? : len; | |
149 | assert(chunk_len > 0); | |
150 | len -= chunk_len; | |
151 | ||
152 | switch(m->type) { | |
153 | case TYPE_UINT16: | |
154 | yaml_propval_int(emitter, m, data, chunk_len, 2); | |
155 | break; | |
156 | case TYPE_UINT32: | |
157 | yaml_propval_int(emitter, m, data, chunk_len, 4); | |
158 | break; | |
159 | case TYPE_UINT64: | |
160 | yaml_propval_int(emitter, m, data, chunk_len, 8); | |
161 | break; | |
162 | case TYPE_STRING: | |
163 | yaml_propval_string(emitter, data, chunk_len); | |
164 | break; | |
165 | default: | |
166 | yaml_propval_int(emitter, m, data, chunk_len, 1); | |
167 | break; | |
168 | } | |
169 | } | |
170 | ||
171 | yaml_sequence_end_event_initialize(&event); | |
172 | yaml_emitter_emit_or_die(emitter, &event); | |
173 | } | |
174 | ||
175 | ||
176 | static void yaml_tree(struct node *tree, yaml_emitter_t *emitter) | |
177 | { | |
178 | struct property *prop; | |
179 | struct node *child; | |
180 | yaml_event_t event; | |
181 | ||
182 | if (tree->deleted) | |
183 | return; | |
184 | ||
185 | yaml_mapping_start_event_initialize(&event, NULL, | |
186 | (yaml_char_t *)YAML_MAP_TAG, 1, YAML_ANY_MAPPING_STYLE); | |
187 | yaml_emitter_emit_or_die(emitter, &event); | |
188 | ||
189 | for_each_property(tree, prop) | |
190 | yaml_propval(emitter, prop); | |
191 | ||
192 | /* Loop over all the children, emitting them into the map */ | |
193 | for_each_child(tree, child) { | |
194 | yaml_scalar_event_initialize(&event, NULL, | |
195 | (yaml_char_t *)YAML_STR_TAG, (yaml_char_t*)child->name, | |
196 | strlen(child->name), 1, 0, YAML_PLAIN_SCALAR_STYLE); | |
197 | yaml_emitter_emit_or_die(emitter, &event); | |
198 | yaml_tree(child, emitter); | |
199 | } | |
200 | ||
201 | yaml_mapping_end_event_initialize(&event); | |
202 | yaml_emitter_emit_or_die(emitter, &event); | |
203 | } | |
204 | ||
205 | void dt_to_yaml(FILE *f, struct dt_info *dti) | |
206 | { | |
207 | yaml_emitter_t emitter; | |
208 | yaml_event_t event; | |
209 | ||
210 | yaml_emitter_initialize(&emitter); | |
211 | yaml_emitter_set_output_file(&emitter, f); | |
212 | yaml_stream_start_event_initialize(&event, YAML_UTF8_ENCODING); | |
213 | yaml_emitter_emit_or_die(&emitter, &event); | |
214 | ||
215 | yaml_document_start_event_initialize(&event, NULL, NULL, NULL, 0); | |
216 | yaml_emitter_emit_or_die(&emitter, &event); | |
217 | ||
218 | yaml_sequence_start_event_initialize(&event, NULL, (yaml_char_t *)YAML_SEQ_TAG, 1, YAML_ANY_SEQUENCE_STYLE); | |
219 | yaml_emitter_emit_or_die(&emitter, &event); | |
220 | ||
221 | yaml_tree(dti->dt, &emitter); | |
222 | ||
223 | yaml_sequence_end_event_initialize(&event); | |
224 | yaml_emitter_emit_or_die(&emitter, &event); | |
225 | ||
226 | yaml_document_end_event_initialize(&event, 0); | |
227 | yaml_emitter_emit_or_die(&emitter, &event); | |
228 | ||
229 | yaml_stream_end_event_initialize(&event); | |
230 | yaml_emitter_emit_or_die(&emitter, &event); | |
231 | ||
232 | yaml_emitter_delete(&emitter); | |
233 | } |