236 lines
6.3 KiB
C
236 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* (C) Copyright Linaro, Ltd. 2018
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* (C) Copyright Arm Holdings. 2017
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* (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
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*/
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#include <stdlib.h>
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#include <yaml.h>
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#include "dtc.h"
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#include "srcpos.h"
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char *yaml_error_name[] = {
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[YAML_NO_ERROR] = "no error",
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[YAML_MEMORY_ERROR] = "memory error",
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[YAML_READER_ERROR] = "reader error",
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[YAML_SCANNER_ERROR] = "scanner error",
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[YAML_PARSER_ERROR] = "parser error",
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[YAML_COMPOSER_ERROR] = "composer error",
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[YAML_WRITER_ERROR] = "writer error",
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[YAML_EMITTER_ERROR] = "emitter error",
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};
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#define yaml_emitter_emit_or_die(emitter, event) ( \
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{ \
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if (!yaml_emitter_emit(emitter, event)) \
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die("yaml '%s': %s in %s, line %i\n", \
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yaml_error_name[(emitter)->error], \
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(emitter)->problem, __func__, __LINE__); \
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})
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static void yaml_propval_int(yaml_emitter_t *emitter, struct marker *markers,
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char *data, unsigned int seq_offset, unsigned int len, int width)
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{
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yaml_event_t event;
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void *tag;
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unsigned int off;
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switch(width) {
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case 1: tag = "!u8"; break;
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case 2: tag = "!u16"; break;
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case 4: tag = "!u32"; break;
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case 8: tag = "!u64"; break;
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default:
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die("Invalid width %i", width);
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}
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assert(len % width == 0);
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yaml_sequence_start_event_initialize(&event, NULL,
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(yaml_char_t *)tag, width == 4, YAML_FLOW_SEQUENCE_STYLE);
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yaml_emitter_emit_or_die(emitter, &event);
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for (off = 0; off < len; off += width) {
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char buf[32];
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struct marker *m;
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bool is_phandle = false;
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switch(width) {
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case 1:
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sprintf(buf, "0x%"PRIx8, *(uint8_t*)(data + off));
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break;
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case 2:
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sprintf(buf, "0x%"PRIx16, dtb_ld16(data + off));
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break;
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case 4:
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sprintf(buf, "0x%"PRIx32, dtb_ld32(data + off));
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m = markers;
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is_phandle = false;
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for_each_marker_of_type(m, REF_PHANDLE) {
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if (m->offset == (seq_offset + off)) {
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is_phandle = true;
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break;
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}
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}
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break;
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case 8:
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sprintf(buf, "0x%"PRIx64, dtb_ld64(data + off));
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break;
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}
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if (is_phandle)
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yaml_scalar_event_initialize(&event, NULL,
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(yaml_char_t*)"!phandle", (yaml_char_t *)buf,
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strlen(buf), 0, 0, YAML_PLAIN_SCALAR_STYLE);
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else
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yaml_scalar_event_initialize(&event, NULL,
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(yaml_char_t*)YAML_INT_TAG, (yaml_char_t *)buf,
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strlen(buf), 1, 1, YAML_PLAIN_SCALAR_STYLE);
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yaml_emitter_emit_or_die(emitter, &event);
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}
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yaml_sequence_end_event_initialize(&event);
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yaml_emitter_emit_or_die(emitter, &event);
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}
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static void yaml_propval_string(yaml_emitter_t *emitter, char *str, int len)
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{
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yaml_event_t event;
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int i;
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assert(str[len-1] == '\0');
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/* Make sure the entire string is in the lower 7-bit ascii range */
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for (i = 0; i < len; i++)
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assert(isascii(str[i]));
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yaml_scalar_event_initialize(&event, NULL,
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(yaml_char_t *)YAML_STR_TAG, (yaml_char_t*)str,
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len-1, 0, 1, YAML_DOUBLE_QUOTED_SCALAR_STYLE);
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yaml_emitter_emit_or_die(emitter, &event);
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}
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static void yaml_propval(yaml_emitter_t *emitter, struct property *prop)
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{
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yaml_event_t event;
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unsigned int len = prop->val.len;
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struct marker *m = prop->val.markers;
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struct marker *markers = prop->val.markers;
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/* Emit the property name */
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yaml_scalar_event_initialize(&event, NULL,
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(yaml_char_t *)YAML_STR_TAG, (yaml_char_t*)prop->name,
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strlen(prop->name), 1, 1, YAML_PLAIN_SCALAR_STYLE);
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yaml_emitter_emit_or_die(emitter, &event);
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/* Boolean properties are easiest to deal with. Length is zero, so just emit 'true' */
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if (len == 0) {
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yaml_scalar_event_initialize(&event, NULL,
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(yaml_char_t *)YAML_BOOL_TAG,
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(yaml_char_t*)"true",
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strlen("true"), 1, 0, YAML_PLAIN_SCALAR_STYLE);
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yaml_emitter_emit_or_die(emitter, &event);
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return;
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}
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if (!m)
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die("No markers present in property '%s' value\n", prop->name);
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yaml_sequence_start_event_initialize(&event, NULL,
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(yaml_char_t *)YAML_SEQ_TAG, 1, YAML_FLOW_SEQUENCE_STYLE);
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yaml_emitter_emit_or_die(emitter, &event);
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for_each_marker(m) {
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int chunk_len;
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char *data = &prop->val.val[m->offset];
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if (m->type < TYPE_UINT8)
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continue;
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chunk_len = type_marker_length(m) ? : len;
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assert(chunk_len > 0);
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len -= chunk_len;
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switch(m->type) {
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case TYPE_UINT16:
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yaml_propval_int(emitter, markers, data, m->offset, chunk_len, 2);
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break;
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case TYPE_UINT32:
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yaml_propval_int(emitter, markers, data, m->offset, chunk_len, 4);
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break;
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case TYPE_UINT64:
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yaml_propval_int(emitter, markers, data, m->offset, chunk_len, 8);
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break;
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case TYPE_STRING:
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yaml_propval_string(emitter, data, chunk_len);
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break;
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default:
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yaml_propval_int(emitter, markers, data, m->offset, chunk_len, 1);
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break;
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}
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}
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yaml_sequence_end_event_initialize(&event);
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yaml_emitter_emit_or_die(emitter, &event);
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}
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static void yaml_tree(struct node *tree, yaml_emitter_t *emitter)
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{
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struct property *prop;
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struct node *child;
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yaml_event_t event;
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if (tree->deleted)
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return;
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yaml_mapping_start_event_initialize(&event, NULL,
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(yaml_char_t *)YAML_MAP_TAG, 1, YAML_ANY_MAPPING_STYLE);
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yaml_emitter_emit_or_die(emitter, &event);
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for_each_property(tree, prop)
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yaml_propval(emitter, prop);
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/* Loop over all the children, emitting them into the map */
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for_each_child(tree, child) {
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yaml_scalar_event_initialize(&event, NULL,
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(yaml_char_t *)YAML_STR_TAG, (yaml_char_t*)child->name,
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strlen(child->name), 1, 0, YAML_PLAIN_SCALAR_STYLE);
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yaml_emitter_emit_or_die(emitter, &event);
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yaml_tree(child, emitter);
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}
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yaml_mapping_end_event_initialize(&event);
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yaml_emitter_emit_or_die(emitter, &event);
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}
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void dt_to_yaml(FILE *f, struct dt_info *dti)
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{
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yaml_emitter_t emitter;
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yaml_event_t event;
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yaml_emitter_initialize(&emitter);
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yaml_emitter_set_output_file(&emitter, f);
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yaml_stream_start_event_initialize(&event, YAML_UTF8_ENCODING);
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yaml_emitter_emit_or_die(&emitter, &event);
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yaml_document_start_event_initialize(&event, NULL, NULL, NULL, 0);
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yaml_emitter_emit_or_die(&emitter, &event);
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yaml_sequence_start_event_initialize(&event, NULL, (yaml_char_t *)YAML_SEQ_TAG, 1, YAML_ANY_SEQUENCE_STYLE);
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yaml_emitter_emit_or_die(&emitter, &event);
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yaml_tree(dti->dt, &emitter);
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yaml_sequence_end_event_initialize(&event);
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yaml_emitter_emit_or_die(&emitter, &event);
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yaml_document_end_event_initialize(&event, 0);
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yaml_emitter_emit_or_die(&emitter, &event);
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yaml_stream_end_event_initialize(&event);
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yaml_emitter_emit_or_die(&emitter, &event);
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yaml_emitter_delete(&emitter);
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}
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