root / device_tree.h @ 8535ab12
History | View | Annotate | Download (2 kB)
1 |
/*
|
---|---|
2 |
* Header with function prototypes to help device tree manipulation using
|
3 |
* libfdt. It also provides functions to read entries from device tree proc
|
4 |
* interface.
|
5 |
*
|
6 |
* Copyright 2008 IBM Corporation.
|
7 |
* Authors: Jerone Young <jyoung5@us.ibm.com>
|
8 |
* Hollis Blanchard <hollisb@us.ibm.com>
|
9 |
*
|
10 |
* This work is licensed under the GNU GPL license version 2 or later.
|
11 |
*
|
12 |
*/
|
13 |
|
14 |
#ifndef __DEVICE_TREE_H__
|
15 |
#define __DEVICE_TREE_H__
|
16 |
|
17 |
void *load_device_tree(const char *filename_path, int *sizep); |
18 |
|
19 |
int qemu_devtree_setprop(void *fdt, const char *node_path, |
20 |
const char *property, void *val_array, int size); |
21 |
int qemu_devtree_setprop_cell(void *fdt, const char *node_path, |
22 |
const char *property, uint32_t val); |
23 |
int qemu_devtree_setprop_string(void *fdt, const char *node_path, |
24 |
const char *property, const char *string); |
25 |
int qemu_devtree_setprop_phandle(void *fdt, const char *node_path, |
26 |
const char *property, |
27 |
const char *target_node_path); |
28 |
int qemu_devtree_nop_node(void *fdt, const char *node_path); |
29 |
int qemu_devtree_add_subnode(void *fdt, const char *name); |
30 |
|
31 |
#define qemu_devtree_setprop_cells(fdt, node_path, property, ...) \
|
32 |
do { \
|
33 |
uint32_t qdt_tmp[] = { __VA_ARGS__ }; \ |
34 |
int i; \
|
35 |
\ |
36 |
for (i = 0; i < ARRAY_SIZE(qdt_tmp); i++) { \ |
37 |
qdt_tmp[i] = cpu_to_be32(qdt_tmp[i]); \ |
38 |
} \ |
39 |
qemu_devtree_setprop(fdt, node_path, property, qdt_tmp, \ |
40 |
sizeof(qdt_tmp)); \
|
41 |
} while (0) |
42 |
|
43 |
#endif /* __DEVICE_TREE_H__ */ |