Thomas Gleixner | 1a59d1b8 | 2019-05-27 08:55:05 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Rob Herring | f858927 | 2018-09-13 08:59:25 -0500 | [diff] [blame] | 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. |
Rob Herring | f858927 | 2018-09-13 08:59:25 -0500 | [diff] [blame] | 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 | |
| 32 | static void yaml_propval_int(yaml_emitter_t *emitter, struct marker *markers, char *data, int len, int width) |
| 33 | { |
| 34 | yaml_event_t event; |
| 35 | void *tag; |
| 36 | int off, start_offset = markers->offset; |
| 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: |
| 62 | sprintf(buf, "0x%"PRIx16, fdt16_to_cpu(*(fdt16_t*)(data + off))); |
| 63 | break; |
| 64 | case 4: |
| 65 | sprintf(buf, "0x%"PRIx32, fdt32_to_cpu(*(fdt32_t*)(data + off))); |
| 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: |
| 76 | sprintf(buf, "0x%"PRIx64, fdt64_to_cpu(*(fdt64_t*)(data + off))); |
| 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; |
| 115 | int len = prop->val.len; |
| 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 | } |