53 #include <fdt.h>
58 static int fdt_blocks_misordered_(const void *fdt,  in fdt_blocks_misordered_()  argument
61 	return (fdt_off_mem_rsvmap(fdt) < FDT_ALIGN(sizeof(struct fdt_header), 8))  in fdt_blocks_misordered_()
62 		|| (fdt_off_dt_struct(fdt) <  in fdt_blocks_misordered_()
63 		    (fdt_off_mem_rsvmap(fdt) + mem_rsv_size))  in fdt_blocks_misordered_()
64 		|| (fdt_off_dt_strings(fdt) <  in fdt_blocks_misordered_()
65 		    (fdt_off_dt_struct(fdt) + struct_size))  in fdt_blocks_misordered_()
66 		|| (fdt_totalsize(fdt) <  in fdt_blocks_misordered_()
67 		    (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));  in fdt_blocks_misordered_()
70 static int fdt_rw_check_header_(void *fdt)  in fdt_rw_check_header_()  argument
72 	FDT_CHECK_HEADER(fdt);  in fdt_rw_check_header_()
74 	if (fdt_version(fdt) < 17)  in fdt_rw_check_header_()
76 	if (fdt_blocks_misordered_(fdt, sizeof(struct fdt_reserve_entry),  in fdt_rw_check_header_()
77 				   fdt_size_dt_struct(fdt)))  in fdt_rw_check_header_()
79 	if (fdt_version(fdt) > 17)  in fdt_rw_check_header_()
80 		fdt_set_version(fdt, 17);  in fdt_rw_check_header_()
85 #define FDT_RW_CHECK_HEADER(fdt) \  argument
88 		if ((err_ = fdt_rw_check_header_(fdt)) != 0) \
92 static inline int fdt_data_size_(void *fdt)  in fdt_data_size_()  argument
94 	return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);  in fdt_data_size_()
97 static int fdt_splice_(void *fdt, void *splicepoint, int oldlen, int newlen)  in fdt_splice_()  argument
100 	char *end = (char *)fdt + fdt_data_size_(fdt);  in fdt_splice_()
104 	if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt))  in fdt_splice_()
106 	if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))  in fdt_splice_()
112 static int fdt_splice_mem_rsv_(void *fdt, struct fdt_reserve_entry *p,  in fdt_splice_mem_rsv_()  argument
117 	err = fdt_splice_(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));  in fdt_splice_mem_rsv_()
120 	fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);  in fdt_splice_mem_rsv_()
121 	fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);  in fdt_splice_mem_rsv_()
125 static int fdt_splice_struct_(void *fdt, void *p,  in fdt_splice_struct_()  argument
131 	if ((err = fdt_splice_(fdt, p, oldlen, newlen)))  in fdt_splice_struct_()
134 	fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);  in fdt_splice_struct_()
135 	fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);  in fdt_splice_struct_()
139 static int fdt_splice_string_(void *fdt, int newlen)  in fdt_splice_string_()  argument
141 	void *p = (char *)fdt  in fdt_splice_string_()
142 		+ fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);  in fdt_splice_string_()
145 	if ((err = fdt_splice_(fdt, p, 0, newlen)))  in fdt_splice_string_()
148 	fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);  in fdt_splice_string_()
152 static int fdt_find_add_string_(void *fdt, const char *s)  in fdt_find_add_string_()  argument
154 	char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);  in fdt_find_add_string_()
160 	p = fdt_find_string_(strtab, fdt_size_dt_strings(fdt), s);  in fdt_find_add_string_()
165 	new = strtab + fdt_size_dt_strings(fdt);  in fdt_find_add_string_()
166 	err = fdt_splice_string_(fdt, len);  in fdt_find_add_string_()
174 int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)  in fdt_add_mem_rsv()  argument
179 	FDT_RW_CHECK_HEADER(fdt);  in fdt_add_mem_rsv()
181 	re = fdt_mem_rsv_w_(fdt, fdt_num_mem_rsv(fdt));  in fdt_add_mem_rsv()
182 	err = fdt_splice_mem_rsv_(fdt, re, 0, 1);  in fdt_add_mem_rsv()
191 int fdt_del_mem_rsv(void *fdt, int n)  in fdt_del_mem_rsv()  argument
193 	struct fdt_reserve_entry *re = fdt_mem_rsv_w_(fdt, n);  in fdt_del_mem_rsv()
195 	FDT_RW_CHECK_HEADER(fdt);  in fdt_del_mem_rsv()
197 	if (n >= fdt_num_mem_rsv(fdt))  in fdt_del_mem_rsv()
200 	return fdt_splice_mem_rsv_(fdt, re, 1, 0);  in fdt_del_mem_rsv()
203 static int fdt_resize_property_(void *fdt, int nodeoffset, const char *name,  in fdt_resize_property_()  argument
209 	*prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);  in fdt_resize_property_()
213 	if ((err = fdt_splice_struct_(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),  in fdt_resize_property_()
221 static int fdt_add_property_(void *fdt, int nodeoffset, const char *name,  in fdt_add_property_()  argument
229 	if ((nextoffset = fdt_check_node_offset_(fdt, nodeoffset)) < 0)  in fdt_add_property_()
232 	namestroff = fdt_find_add_string_(fdt, name);  in fdt_add_property_()
236 	*prop = fdt_offset_ptr_w_(fdt, nextoffset);  in fdt_add_property_()
239 	err = fdt_splice_struct_(fdt, *prop, 0, proplen);  in fdt_add_property_()
249 int fdt_set_name(void *fdt, int nodeoffset, const char *name)  in fdt_set_name()  argument
255 	FDT_RW_CHECK_HEADER(fdt);  in fdt_set_name()
257 	namep = (char *)(uintptr_t)fdt_get_name(fdt, nodeoffset, &oldlen);  in fdt_set_name()
263 	err = fdt_splice_struct_(fdt, namep, FDT_TAGALIGN(oldlen+1),  in fdt_set_name()
272 int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name,  in fdt_setprop_placeholder()  argument
278 	FDT_RW_CHECK_HEADER(fdt);  in fdt_setprop_placeholder()
280 	err = fdt_resize_property_(fdt, nodeoffset, name, len, &prop);  in fdt_setprop_placeholder()
282 		err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);  in fdt_setprop_placeholder()
290 int fdt_setprop(void *fdt, int nodeoffset, const char *name,  in fdt_setprop()  argument
296 	err = fdt_setprop_placeholder(fdt, nodeoffset, name, len, &prop_data);  in fdt_setprop()
305 int fdt_appendprop(void *fdt, int nodeoffset, const char *name,  in fdt_appendprop()  argument
311 	FDT_RW_CHECK_HEADER(fdt);  in fdt_appendprop()
313 	prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);  in fdt_appendprop()
316 		err = fdt_splice_struct_(fdt, prop->data,  in fdt_appendprop()
324 		err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);  in fdt_appendprop()
332 int fdt_delprop(void *fdt, int nodeoffset, const char *name)  in fdt_delprop()  argument
337 	FDT_RW_CHECK_HEADER(fdt);  in fdt_delprop()
339 	prop = fdt_get_property_w(fdt, nodeoffset, name, &len);  in fdt_delprop()
344 	return fdt_splice_struct_(fdt, prop, proplen, 0);  in fdt_delprop()
347 int fdt_add_subnode_namelen(void *fdt, int parentoffset,  in fdt_add_subnode_namelen()  argument
357 	FDT_RW_CHECK_HEADER(fdt);  in fdt_add_subnode_namelen()
359 	offset = fdt_subnode_offset_namelen(fdt, parentoffset, name, namelen);  in fdt_add_subnode_namelen()
366 	fdt_next_tag(fdt, parentoffset, &nextoffset); /* skip the BEGIN_NODE */  in fdt_add_subnode_namelen()
369 		tag = fdt_next_tag(fdt, offset, &nextoffset);  in fdt_add_subnode_namelen()
372 	nh = fdt_offset_ptr_w_(fdt, offset);  in fdt_add_subnode_namelen()
375 	err = fdt_splice_struct_(fdt, nh, 0, nodelen);  in fdt_add_subnode_namelen()
388 int fdt_add_subnode(void *fdt, int parentoffset, const char *name)  in fdt_add_subnode()  argument
390 	return fdt_add_subnode_namelen(fdt, parentoffset, name, strlen(name));  in fdt_add_subnode()
393 int fdt_del_node(void *fdt, int nodeoffset)  in fdt_del_node()  argument
397 	FDT_RW_CHECK_HEADER(fdt);  in fdt_del_node()
399 	endoffset = fdt_node_end_offset_(fdt, nodeoffset);  in fdt_del_node()
403 	return fdt_splice_struct_(fdt, fdt_offset_ptr_w_(fdt, nodeoffset),  in fdt_del_node()
429 int fdt_open_into(const void *fdt, void *buf, int bufsize)  in fdt_open_into()  argument
434 	const char *fdtstart = fdt;  in fdt_open_into()
435 	const char *fdtend = fdtstart + fdt_totalsize(fdt);  in fdt_open_into()
438 	FDT_CHECK_HEADER(fdt);  in fdt_open_into()
440 	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)  in fdt_open_into()
443 	if (fdt_version(fdt) >= 17) {  in fdt_open_into()
444 		struct_size = fdt_size_dt_struct(fdt);  in fdt_open_into()
447 		while (fdt_next_tag(fdt, struct_size, &struct_size) != FDT_END)  in fdt_open_into()
453 	if (!fdt_blocks_misordered_(fdt, mem_rsv_size, struct_size)) {  in fdt_open_into()
455 		err = fdt_move(fdt, buf, bufsize);  in fdt_open_into()
466 		+ struct_size + fdt_size_dt_strings(fdt);  in fdt_open_into()
481 	fdt_packblocks_(fdt, tmp, mem_rsv_size, struct_size);  in fdt_open_into()
488 	fdt_set_boot_cpuid_phys(buf, fdt_boot_cpuid_phys(fdt));  in fdt_open_into()
493 int fdt_pack(void *fdt)  in fdt_pack()  argument
497 	FDT_RW_CHECK_HEADER(fdt);  in fdt_pack()
499 	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)  in fdt_pack()
501 	fdt_packblocks_(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));  in fdt_pack()
502 	fdt_set_totalsize(fdt, fdt_data_size_(fdt));  in fdt_pack()