1 // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
3  * libfdt - Flat Device Tree manipulation
32 		return -FDT_ERR_BADVERSION;  in fdt_rw_probe_()
35 		return -FDT_ERR_BADLAYOUT;  in fdt_rw_probe_()
58 	size_t soff = p - (char *)fdt;  in fdt_splice_()
61 		return -FDT_ERR_BADOFFSET;  in fdt_splice_()
63 		return -FDT_ERR_BADOFFSET;  in fdt_splice_()
64 	if (dsize - oldlen + newlen > fdt_totalsize(fdt))  in fdt_splice_()
65 		return -FDT_ERR_NOSPACE;  in fdt_splice_()
66 	memmove(p + newlen, p + oldlen, ((char *)fdt + dsize) - (p + oldlen));  in fdt_splice_()
73 	int delta = (newn - oldn) * sizeof(*p);  in fdt_splice_mem_rsv_()
86 	int delta = newlen - oldlen;  in fdt_splice_struct_()
97 /* Must only be used to roll back in case of error */
102 	fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) - newlen);  in fdt_del_last_string_()
119  * fdt_find_add_string_() - Find or allocate a string
121  * @fdt: pointer to the device tree to check/adjust
125  * @return offset of string in the string table (whether found or added)
141 		return (p - strtab);  in fdt_find_add_string_()
152 	return (new - strtab);  in fdt_find_add_string_()
167 	re->address = cpu_to_fdt64(address);  in fdt_add_mem_rsv()
168 	re->size = cpu_to_fdt64(size);  in fdt_add_mem_rsv()
179 		return -FDT_ERR_NOTFOUND;  in fdt_del_mem_rsv()
194 	if ((err = fdt_splice_struct_(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),  in fdt_resize_property_()
198 	(*prop)->len = cpu_to_fdt32(len);  in fdt_resize_property_()
229 	(*prop)->tag = cpu_to_fdt32(FDT_PROP);  in fdt_add_property_()
230 	(*prop)->nameoff = cpu_to_fdt32(namestroff);  in fdt_add_property_()
231 	(*prop)->len = cpu_to_fdt32(len);  in fdt_add_property_()
267 	if (err == -FDT_ERR_NOTFOUND)  in fdt_setprop_placeholder()
272 	*prop_data = prop->data;  in fdt_setprop_placeholder()
302 		err = fdt_splice_struct_(fdt, prop->data,  in fdt_appendprop()
307 		prop->len = cpu_to_fdt32(newlen);  in fdt_appendprop()
308 		memcpy(prop->data + oldlen, val, len);  in fdt_appendprop()
313 		memcpy(prop->data, val, len);  in fdt_appendprop()
347 		return -FDT_ERR_EXISTS;  in fdt_add_subnode_namelen()
348 	else if (offset != -FDT_ERR_NOTFOUND)  in fdt_add_subnode_namelen()
355 		return -FDT_ERR_INTERNAL;  in fdt_add_subnode_namelen()
368 	nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);  in fdt_add_subnode_namelen()
369 	memset(nh->name, 0, FDT_TAGALIGN(namelen+1));  in fdt_add_subnode_namelen()
370 	memcpy(nh->name, name, namelen);  in fdt_add_subnode_namelen()
371 	endtag = (fdt32_t *)((char *)nh + nodelen - FDT_TAGSIZE);  in fdt_add_subnode_namelen()
393 				  endoffset - nodeoffset, 0);  in fdt_del_node()
442 		return -FDT_ERR_BADVERSION;  in fdt_open_into()
462 		return -FDT_ERR_NOSPACE;  in fdt_open_into()
464 	/* First attempt to build converted tree at beginning of buffer */  in fdt_open_into()
466 	/* But if that overlaps with the old tree... */  in fdt_open_into()
468 		/* Try right after the old tree instead */  in fdt_open_into()
471 			return -FDT_ERR_NOSPACE;  in fdt_open_into()