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Diffstat (limited to 'include/common/fdt_wrappers.h')
| -rw-r--r-- | include/common/fdt_wrappers.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/common/fdt_wrappers.h b/include/common/fdt_wrappers.h new file mode 100644 index 00000000..db72f180 --- /dev/null +++ b/include/common/fdt_wrappers.h @@ -0,0 +1,19 @@ +/* + * Copyright (c) 2018, 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__ +#define __FDT_WRAPPERS__ + +/* Number of cells, given total length in bytes. Each cell is 4 bytes long */ +#define NCELLS(l) (l / 4) + +int fdtw_read_cells(const void *dtb, int node, const char *prop, + unsigned int cells, void *value); +int fdtw_write_inplace_cells(void *dtb, int node, const char *prop, + unsigned int cells, void *value); +#endif /* __FDT_WRAPPERS__ */ |