1ae9ace70SMasahiro Yamada /* SPDX-License-Identifier: GPL-2.0+ BSD-2-Clause */
2ae9ace70SMasahiro Yamada #include "fdt_host.h"
3ae9ace70SMasahiro Yamada #include "../../scripts/dtc/libfdt/fdt_rw.c"
4ae9ace70SMasahiro Yamada
fdt_remove_unused_strings(const void * old,void * new)5ae9ace70SMasahiro Yamada int fdt_remove_unused_strings(const void *old, void *new)
6ae9ace70SMasahiro Yamada {
7ae9ace70SMasahiro Yamada const struct fdt_property *old_prop;
8ae9ace70SMasahiro Yamada struct fdt_property *new_prop;
9ae9ace70SMasahiro Yamada int size = fdt_totalsize(old);
10ae9ace70SMasahiro Yamada int next_offset, offset;
11ae9ace70SMasahiro Yamada const char *str;
12ae9ace70SMasahiro Yamada int ret;
13ae9ace70SMasahiro Yamada int tag = FDT_PROP;
14ae9ace70SMasahiro Yamada
15ae9ace70SMasahiro Yamada /* Make a copy and remove the strings */
16ae9ace70SMasahiro Yamada memcpy(new, old, size);
17ae9ace70SMasahiro Yamada fdt_set_size_dt_strings(new, 0);
18ae9ace70SMasahiro Yamada
19ae9ace70SMasahiro Yamada /* Add every property name back into the new string table */
20ae9ace70SMasahiro Yamada for (offset = 0; tag != FDT_END; offset = next_offset) {
21ae9ace70SMasahiro Yamada tag = fdt_next_tag(old, offset, &next_offset);
22ae9ace70SMasahiro Yamada if (tag != FDT_PROP)
23ae9ace70SMasahiro Yamada continue;
24ae9ace70SMasahiro Yamada old_prop = fdt_get_property_by_offset(old, offset, NULL);
25ae9ace70SMasahiro Yamada new_prop = (struct fdt_property *)(unsigned long)
26ae9ace70SMasahiro Yamada fdt_get_property_by_offset(new, offset, NULL);
27ae9ace70SMasahiro Yamada str = fdt_string(old, fdt32_to_cpu(old_prop->nameoff));
28*db405d19SRob Herring ret = fdt_find_add_string_(new, str);
29ae9ace70SMasahiro Yamada if (ret < 0)
30ae9ace70SMasahiro Yamada return ret;
31ae9ace70SMasahiro Yamada new_prop->nameoff = cpu_to_fdt32(ret);
32ae9ace70SMasahiro Yamada }
33ae9ace70SMasahiro Yamada
34ae9ace70SMasahiro Yamada return 0;
35ae9ace70SMasahiro Yamada }
36