LXR uboot/tools/libfdt/fdt

   1/* SPDX-License-Identifier:     GPL-2.0+ BSD-2-Clause */
   2#include "fdt_host.h"
   3#include "../../scripts/dtc/libfdt/fdt_rw.c"
   4
   5int fdt_remove_unused_strings(const void *old, void *new)
   6{
   7        const struct fdt_property *old_prop;
   8        struct fdt_property *new_prop;
   9        int size = fdt_totalsize(old);
  10        int next_offset, offset;
  11        const char *str;
  12        int ret;
  13        int tag = FDT_PROP;
  14        int allocated;
  15
  16        /* Make a copy and remove the strings */
  17        memcpy(new, old, size);
  18        fdt_set_size_dt_strings(new, 0);
  19
  20        /* Add every property name back into the new string table */
  21        for (offset = 0; tag != FDT_END; offset = next_offset) {
  22                tag = fdt_next_tag(old, offset, &next_offset);
  23                if (tag != FDT_PROP)
  24                        continue;
  25                old_prop = fdt_get_property_by_offset(old, offset, NULL);
  26                new_prop = (struct fdt_property *)(unsigned long)
  27                        fdt_get_property_by_offset(new, offset, NULL);
  28                str = fdt_string(old, fdt32_to_cpu(old_prop->nameoff));
  29                ret = fdt_find_add_string_(new, str, &allocated);
  30                if (ret < 0)
  31                        return ret;
  32                new_prop->nameoff = cpu_to_fdt32(ret);
  33        }
  34
  35        return 0;
  36}
  37