diff options
| author | Soby Mathew <soby.mathew@arm.com> | 2017-11-06 13:56:40 +0000 |
|---|---|---|
| committer | Soby Mathew <soby.mathew@arm.com> | 2018-02-26 16:31:11 +0000 |
| commit | e5674e1fd6c362906c7970c6043aaf93ec623eba (patch) | |
| tree | 8bc84fe7bd0b95bcac19b55920a5f1642d6cab38 /include | |
| parent | bf9ce61be03cb6bc173b0eddde7a2be10fa65c00 (diff) | |
Dynamic cfg: Introduce fdt wrappers
Change-Id: I9b1cdaf2430a1998a69aa366ea1461224a3d43dc
Co-Authoured-by: Jeenu Viswambharan <Jeenu.Viswambharan@arm.com>
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Diffstat (limited to 'include')
| -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__ */ |