Lines Matching +full:device +full:- +full:tree
1 // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
3 * libfdt - Flat Device Tree manipulation
15 * overlay_get_target_phandle - retrieves the target phandle of a fragment
16 * @fdto: pointer to the device tree overlay blob
21 * property) instead of a path (target-path property).
26 * -1, if the phandle was malformed
37 if ((len != sizeof(*val)) || (fdt32_to_cpu(*val) == (uint32_t)-1)) in overlay_get_target_phandle()
38 return (uint32_t)-1; in overlay_get_target_phandle()
52 if (phandle == (uint32_t)-1) in fdt_overlay_target_offset()
53 return -FDT_ERR_BADPHANDLE; in fdt_overlay_target_offset()
58 path = fdt_getprop(fdto, fragment_offset, "target-path", &path_len); in fdt_overlay_target_offset()
68 * target-path property in a node that contains a in fdt_overlay_target_offset()
73 if (ret < 0 && path_len == -FDT_ERR_NOTFOUND) in fdt_overlay_target_offset()
74 ret = -FDT_ERR_BADOVERLAY; in fdt_overlay_target_offset()
88 * overlay_phandle_add_offset - Increases a phandle by an offset
89 * @fdt: Base device tree blob
90 * @node: Device tree overlay blob
113 return -FDT_ERR_BADPHANDLE; in overlay_phandle_add_offset()
117 return -FDT_ERR_NOPHANDLES; in overlay_phandle_add_offset()
120 if (adj_val == (uint32_t)-1) in overlay_phandle_add_offset()
121 return -FDT_ERR_NOPHANDLES; in overlay_phandle_add_offset()
127 * overlay_adjust_node_phandles - Offsets the phandles of a node
128 * @fdto: Device tree overlay blob
135 * phandles to not conflict with the overlays of the base device tree.
148 if (ret && ret != -FDT_ERR_NOTFOUND) in overlay_adjust_node_phandles()
152 if (ret && ret != -FDT_ERR_NOTFOUND) in overlay_adjust_node_phandles()
165 * overlay_adjust_local_phandles - Adjust the phandles of a whole overlay
166 * @fdto: Device tree overlay blob
172 * phandles to not conflict with the overlays of the base device tree.
187 * overlay_update_local_node_references - Adjust the overlay references
188 * @fdto: Device tree overlay blob
194 * pointing to a node within the device tree overlay by adding a
197 * This is mainly used as part of a device tree application process,
198 * where you want the device tree overlays phandles to not conflict
199 * with the ones from the base device tree before merging them.
228 return -FDT_ERR_BADOVERLAY; in overlay_update_local_node_references()
233 if (tree_len == -FDT_ERR_NOTFOUND) in overlay_update_local_node_references()
234 return -FDT_ERR_BADOVERLAY; in overlay_update_local_node_references()
262 if (ret == -FDT_ERR_NOSPACE) in overlay_update_local_node_references()
263 return -FDT_ERR_BADOVERLAY; in overlay_update_local_node_references()
277 if (tree_child == -FDT_ERR_NOTFOUND) in overlay_update_local_node_references()
278 return -FDT_ERR_BADOVERLAY; in overlay_update_local_node_references()
294 * overlay_update_local_references - Adjust the overlay references
295 * @fdto: Device tree overlay blob
299 * to a node within the device tree overlay by adding a constant
302 * This is mainly used as part of a device tree application process,
303 * where you want the device tree overlays phandles to not conflict
304 * with the ones from the base device tree before merging them.
317 if (fixups == -FDT_ERR_NOTFOUND) in overlay_update_local_references()
324 * Update our local references from the root of the tree in overlay_update_local_references()
331 * overlay_fixup_one_phandle - Set an overlay phandle to the base one
332 * @fdt: Base Device Tree blob
333 * @fdto: Device tree overlay blob
334 * @symbols_off: Node offset of the symbols node in the base device tree
343 * a node in the base device tree.
345 * This is part of the device tree overlay application process, when
379 return -FDT_ERR_NOTFOUND; in overlay_fixup_one_phandle()
382 if (fixup_off == -FDT_ERR_NOTFOUND) in overlay_fixup_one_phandle()
383 return -FDT_ERR_BADOVERLAY; in overlay_fixup_one_phandle()
395 * overlay_fixup_phandle - Set an overlay phandle to the base one
396 * @fdt: Base Device Tree blob
397 * @fdto: Device tree overlay blob
398 * @symbols_off: Node offset of the symbols node in the base device tree
403 * in use in the base device tree.
405 * This is part of the device tree overlay application process, when
423 if (len == -FDT_ERR_NOTFOUND) in overlay_fixup_phandle()
424 return -FDT_ERR_INTERNAL; in overlay_fixup_phandle()
439 return -FDT_ERR_BADOVERLAY; in overlay_fixup_phandle()
440 fixup_len = fixup_end - fixup_str; in overlay_fixup_phandle()
442 len -= fixup_len + 1; in overlay_fixup_phandle()
448 return -FDT_ERR_BADOVERLAY; in overlay_fixup_phandle()
450 path_len = sep - path; in overlay_fixup_phandle()
451 if (path_len == (fixup_len - 1)) in overlay_fixup_phandle()
452 return -FDT_ERR_BADOVERLAY; in overlay_fixup_phandle()
454 fixup_len -= path_len + 1; in overlay_fixup_phandle()
458 return -FDT_ERR_BADOVERLAY; in overlay_fixup_phandle()
460 name_len = sep - name; in overlay_fixup_phandle()
462 return -FDT_ERR_BADOVERLAY; in overlay_fixup_phandle()
466 return -FDT_ERR_BADOVERLAY; in overlay_fixup_phandle()
479 * overlay_fixup_phandles - Resolve the overlay phandles to the base
480 * device tree
481 * @fdt: Base Device Tree blob
482 * @fdto: Device tree overlay blob
485 * to nodes in the base device tree.
487 * This is one of the steps of the device tree overlay application
502 if (fixups_off == -FDT_ERR_NOTFOUND) in overlay_fixup_phandles()
509 if ((symbols_off < 0 && (symbols_off != -FDT_ERR_NOTFOUND))) in overlay_fixup_phandles()
524 * overlay_apply_node - Merges a node into the base device tree
525 * @fdt: Base Device Tree blob
526 * @target: Node offset in the base device tree to apply the fragment to
527 * @fdto: Device tree overlay blob
530 * overlay_apply_node() merges a node into a target base device tree
533 * This is part of the final step in the device tree overlay
535 * resolved and you just have to merge overlay into the base device
536 * tree.
556 if (prop_len == -FDT_ERR_NOTFOUND) in overlay_apply_node()
557 return -FDT_ERR_INTERNAL; in overlay_apply_node()
572 if (nnode == -FDT_ERR_EXISTS) { in overlay_apply_node()
574 if (nnode == -FDT_ERR_NOTFOUND) in overlay_apply_node()
575 return -FDT_ERR_INTERNAL; in overlay_apply_node()
590 * overlay_merge - Merge an overlay into its base device tree
591 * @fdt: Base Device Tree blob
592 * @fdto: Device tree overlay blob
594 * overlay_merge() merges an overlay into its base device tree.
596 * This is the next to last step in the device tree overlay application
598 * you just have to merge overlay into the base device tree.
618 if (overlay == -FDT_ERR_NOTFOUND) in overlay_merge()
665 * overlay_symbol_update - Update the symbols of base tree after a merge
666 * @fdt: Base Device Tree blob
667 * @fdto: Device tree overlay blob
669 * overlay_symbol_update() updates the symbols of the base tree with the
672 * This is the last step in the device tree overlay application
702 if (root_sym == -FDT_ERR_NOTFOUND) in overlay_symbol_update()
716 if (path_len < 1 || memchr(path, '\0', path_len) != &path[path_len - 1]) in overlay_symbol_update()
717 return -FDT_ERR_BADVALUE; in overlay_symbol_update()
723 return -FDT_ERR_BADVALUE; in overlay_symbol_update()
729 * up in the target tree */ in overlay_symbol_update()
734 frag_name_len = s - path - 1; in overlay_symbol_update()
737 len = sizeof("/__overlay__/") - 1; in overlay_symbol_update()
738 if ((e - s) > len && (memcmp(s, "/__overlay__/", len) == 0)) { in overlay_symbol_update()
739 /* /<fragment-name>/__overlay__/<relative-subnode-path> */ in overlay_symbol_update()
741 rel_path_len = e - rel_path - 1; in overlay_symbol_update()
742 } else if ((e - s) == len in overlay_symbol_update()
743 && (memcmp(s, "/__overlay__", len - 1) == 0)) { in overlay_symbol_update()
744 /* /<fragment-name>/__overlay__ */ in overlay_symbol_update()
749 * up in the target tree */ in overlay_symbol_update()
758 return -FDT_ERR_BADOVERLAY; in overlay_symbol_update()
764 return -FDT_ERR_BADOVERLAY; in overlay_symbol_update()
805 len--; in overlay_symbol_update()
861 * The base device tree might have been damaged, erase its in fdt_overlay_apply()