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/*
* Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/* Helper functions to offer easier navigation of Device Tree Blob */
#ifndef FDT_WRAPPERS_H
#define FDT_WRAPPERS_H
/* Number of cells, given total length in bytes. Each cell is 4 bytes long */
#define NCELLS(len) ((len) / 4U)
int fdtw_read_cells(const void *dtb, int node, const char *prop,
unsigned int cells, void *value);
int fdtw_read_array(const void *dtb, int node, const char *prop,
unsigned int cells, void *value);
int fdtw_read_string(const void *dtb, int node, const char *prop,
char *str, size_t size);
int fdtw_write_inplace_cells(void *dtb, int node, const char *prop,
unsigned int cells, void *value);
int fdtw_read_bytes(const void *dtb, int node, const char *prop,
unsigned int length, void *value);
int fdtw_write_inplace_bytes(void *dtb, int node, const char *prop,
unsigned int length, const void *data);
#endif /* FDT_WRAPPERS_H */
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