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73f1ac6c8e
fdtw_read_cells() can only read one or two cells, sometimes it may be needed to read more cells from one property. Change-Id: Ie70dc76d1540cd6a04787cde7cccb4d1bafc7282 Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
24 lines
790 B
C
24 lines
790 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__
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#define __FDT_WRAPPERS__
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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__ */
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