9  * overlay_get_target_phandle - retrieves the target phandle of a fragment
15  * property) instead of a path (target-path property).
20  *	-1, if the phandle was malformed
31 	if ((len != sizeof(*val)) || (fdt32_to_cpu(*val) == (uint32_t)-1))  in overlay_get_target_phandle()
32 		return (uint32_t)-1;  in overlay_get_target_phandle()
38  * overlay_get_target - retrieves the offset of a fragment's target
39  * @fdt: Base device tree blob
43  * overlay_get_target() retrieves the target offset in the base
48  *      the targetted node offset in the base device tree
60 	if (phandle == (uint32_t)-1)  in overlay_get_target()
61 		return -FDT_ERR_BADPHANDLE;  in overlay_get_target()
67 	path = fdt_getprop(fdto, fragment, "target-path", &path_len);  in overlay_get_target()
71 		 * target-path property in a node that contains a  in overlay_get_target()
76 		if (path_len == -FDT_ERR_NOTFOUND)  in overlay_get_target()
77 			return -FDT_ERR_BADOVERLAY;  in overlay_get_target()
86  * overlay_phandle_add_offset - Increases a phandle by an offset
87  * @fdt: Base device tree blob
111 		return -FDT_ERR_BADPHANDLE;  in overlay_phandle_add_offset()
115 		return -FDT_ERR_NOPHANDLES;  in overlay_phandle_add_offset()
118 	if (adj_val == (uint32_t)-1)  in overlay_phandle_add_offset()
119 		return -FDT_ERR_NOPHANDLES;  in overlay_phandle_add_offset()
125  * overlay_adjust_node_phandles - Offsets the phandles of a node
133  * phandles to not conflict with the overlays of the base device tree.
146 	if (ret && ret != -FDT_ERR_NOTFOUND)  in overlay_adjust_node_phandles()
150 	if (ret && ret != -FDT_ERR_NOTFOUND)  in overlay_adjust_node_phandles()
163  * overlay_adjust_local_phandles - Adjust the phandles of a whole overlay
170  * phandles to not conflict with the overlays of the base device tree.
185  * overlay_update_local_node_references - Adjust the overlay references
197  * with the ones from the base device tree before merging them.
226 			return -FDT_ERR_BADOVERLAY;  in overlay_update_local_node_references()
230 			if (tree_len == -FDT_ERR_NOTFOUND)  in overlay_update_local_node_references()
231 				return -FDT_ERR_BADOVERLAY;  in overlay_update_local_node_references()
259 			if (ret == -FDT_ERR_NOSPACE)  in overlay_update_local_node_references()
260 				return -FDT_ERR_BADOVERLAY;  in overlay_update_local_node_references()
274 		if (tree_child == -FDT_ERR_NOTFOUND)  in overlay_update_local_node_references()
275 			return -FDT_ERR_BADOVERLAY;  in overlay_update_local_node_references()
291  * overlay_update_local_references - Adjust the overlay references
297  * delta to not conflict with the base overlay.
301  * with the ones from the base device tree before merging them.
314 		if (fixups == -FDT_ERR_NOTFOUND)  in overlay_update_local_references()
328  * overlay_fixup_one_phandle - Set an overlay phandle to the base one
329  * @fdt: Base Device Tree blob
331  * @symbols_off: Node offset of the symbols node in the base device tree
340  * a node in the base device tree.
344  * base dt nodes.
376 		return -FDT_ERR_NOTFOUND;  in overlay_fixup_one_phandle()
379 	if (fixup_off == -FDT_ERR_NOTFOUND)  in overlay_fixup_one_phandle()
380 		return -FDT_ERR_BADOVERLAY;  in overlay_fixup_one_phandle()
392  * overlay_fixup_phandle - Set an overlay phandle to the base one
393  * @fdt: Base Device Tree blob
395  * @symbols_off: Node offset of the symbols node in the base device tree
400  * in use in the base device tree.
404  * base dt nodes.
420 		if (len == -FDT_ERR_NOTFOUND)  in overlay_fixup_phandle()
421 			return -FDT_ERR_INTERNAL;  in overlay_fixup_phandle()
436 			return -FDT_ERR_BADOVERLAY;  in overlay_fixup_phandle()
437 		fixup_len = fixup_end - fixup_str;  in overlay_fixup_phandle()
439 		len -= fixup_len + 1;  in overlay_fixup_phandle()
445 			return -FDT_ERR_BADOVERLAY;  in overlay_fixup_phandle()
447 		path_len = sep - path;  in overlay_fixup_phandle()
448 		if (path_len == (fixup_len - 1))  in overlay_fixup_phandle()
449 			return -FDT_ERR_BADOVERLAY;  in overlay_fixup_phandle()
451 		fixup_len -= path_len + 1;  in overlay_fixup_phandle()
455 			return -FDT_ERR_BADOVERLAY;  in overlay_fixup_phandle()
457 		name_len = sep - name;  in overlay_fixup_phandle()
459 			return -FDT_ERR_BADOVERLAY;  in overlay_fixup_phandle()
463 			return -FDT_ERR_BADOVERLAY;  in overlay_fixup_phandle()
476  * overlay_fixup_phandles - Resolve the overlay phandles to the base
478  * @fdt: Base Device Tree blob
482  * to nodes in the base device tree.
486  * the actual base dt nodes.
499 	if (fixups_off == -FDT_ERR_NOTFOUND)  in overlay_fixup_phandles()
504 	/* And base DTs without symbols */  in overlay_fixup_phandles()
506 	if ((symbols_off < 0 && (symbols_off != -FDT_ERR_NOTFOUND)))  in overlay_fixup_phandles()
521  * overlay_apply_node - Merges a node into the base device tree
522  * @fdt: Base Device Tree blob
523  * @target: Node offset in the base device tree to apply the fragment to
525  * @node: Node offset in the overlay holding the changes to merge
527  * overlay_apply_node() merges a node into a target base device tree
532  * resolved and you just have to merge overlay into the base device
553 		if (prop_len == -FDT_ERR_NOTFOUND)  in overlay_apply_node()
554 			return -FDT_ERR_INTERNAL;  in overlay_apply_node()
569 		if (nnode == -FDT_ERR_EXISTS) {  in overlay_apply_node()
571 			if (nnode == -FDT_ERR_NOTFOUND)  in overlay_apply_node()
572 				return -FDT_ERR_INTERNAL;  in overlay_apply_node()
587  * overlay_merge - Merge an overlay into its base device tree
588  * @fdt: Base Device Tree blob
591  * overlay_merge() merges an overlay into its base device tree.
595  * you just have to merge overlay into the base device tree.
615 		if (overlay == -FDT_ERR_NOTFOUND)  in overlay_merge()
671 	 * The base device tree might have been damaged, erase its  in fdt_overlay_apply()