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