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git.proxmox.com Git - qemu.git/blob - device_tree.h
2 * Header with function prototypes to help device tree manipulation using
3 * libfdt. It also provides functions to read entries from device tree proc
6 * Copyright 2008 IBM Corporation.
7 * Authors: Jerone Young <jyoung5@us.ibm.com>
8 * Hollis Blanchard <hollisb@us.ibm.com>
10 * This work is licensed under the GNU GPL license version 2 or later.
14 #ifndef __DEVICE_TREE_H__
15 #define __DEVICE_TREE_H__
17 void *load_device_tree(const char *filename_path
, int *sizep
);
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
,
27 const char *target_node_path
);
28 uint32_t qemu_devtree_get_phandle(void *fdt
, const char *path
);
29 int qemu_devtree_nop_node(void *fdt
, const char *node_path
);
30 int qemu_devtree_add_subnode(void *fdt
, const char *name
);
32 #define qemu_devtree_setprop_cells(fdt, node_path, property, ...) \
34 uint32_t qdt_tmp[] = { __VA_ARGS__ }; \
37 for (i = 0; i < ARRAY_SIZE(qdt_tmp); i++) { \
38 qdt_tmp[i] = cpu_to_be32(qdt_tmp[i]); \
40 qemu_devtree_setprop(fdt, node_path, property, qdt_tmp, \
44 #endif /* __DEVICE_TREE_H__ */