// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)

/*

 * libfdt - Flat Device Tree manipulation

 * Copyright (C) 2006 David Gibson, IBM Corporation.

 */

#include "libfdt_env.h"

#include <fdt.h>

#include <libfdt.h>

#include "libfdt_internal.h"

int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,

          const char *name, int namelen,

          uint32_t idx, const void *val,

          int len)

{

  void *propval;

  int proplen;

  propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen,

          &proplen);

  if (!propval)

    return proplen;

  if ((unsigned)proplen < (len + idx))

    return -FDT_ERR_NOSPACE;

  memcpy((char *)propval + idx, val, len);

  return 0;

}

int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,

      const void *val, int len)

{

  const void *propval;

  int proplen;

  propval = fdt_getprop(fdt, nodeoffset, name, &proplen);

  if (!propval)

    return proplen;

  if (proplen != len)

    return -FDT_ERR_NOSPACE;

  return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name,

               strlen(name), 0,

               val, len);

}

static void fdt_nop_region_(void *start, int len)

{

  fdt32_t *p;

  for (p = start; (char *)p < ((char *)start + len); p++)

    *p = cpu_to_fdt32(FDT_NOP);

}

int fdt_nop_property(void *fdt, int nodeoffset, const char *name)

{

  struct fdt_property *prop;

  int len;

  prop = fdt_get_property_w(fdt, nodeoffset, name, &len);

  if (!prop)

    return len;

  fdt_nop_region_(prop, len + sizeof(*prop));

  return 0;

}

int fdt_node_end_offset_(void *fdt, int offset)

{

  int depth = 0;

  while ((offset >= 0) && (depth >= 0))

    offset = fdt_next_node(fdt, offset, &depth);

  return offset;

}

int fdt_nop_node(void *fdt, int nodeoffset)

{

  int endoffset;

  endoffset = fdt_node_end_offset_(fdt, nodeoffset);

  if (endoffset < 0)

    return endoffset;

  fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0),

      endoffset - nodeoffset);

  return 0;

}