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/*
* Header with function prototypes to help device tree manipulation using
* libfdt. It also provides functions to read entries from device tree proc
* interface.
*
* Copyright 2008 IBM Corporation.
* Authors: Jerone Young <jyoung5@us.ibm.com>
* Hollis Blanchard <hollisb@us.ibm.com>
*
* This work is licensed under the GNU GPL license version 2 or later.
*
*/
#ifndef __DEVICE_TREE_H__
#define __DEVICE_TREE_H__
void *create_device_tree(int *sizep);
void *load_device_tree(const char *filename_path, int *sizep);
int qemu_devtree_setprop(void *fdt, const char *node_path,
const char *property, void *val_array, int size);
int qemu_devtree_setprop_cell(void *fdt, const char *node_path,
const char *property, uint32_t val);
int qemu_devtree_setprop_string(void *fdt, const char *node_path,
const char *property, const char *string);
int qemu_devtree_setprop_phandle(void *fdt, const char *node_path,
const char *property,
const char *target_node_path);
uint32_t qemu_devtree_get_phandle(void *fdt, const char *path);
uint32_t qemu_devtree_alloc_phandle(void *fdt);
int qemu_devtree_nop_node(void *fdt, const char *node_path);
int qemu_devtree_add_subnode(void *fdt, const char *name);
#define qemu_devtree_setprop_cells(fdt, node_path, property, ...) \
do { \
uint32_t qdt_tmp[] = { __VA_ARGS__ }; \
int i; \
\
for (i = 0; i < ARRAY_SIZE(qdt_tmp); i++) { \
qdt_tmp[i] = cpu_to_be32(qdt_tmp[i]); \
} \
qemu_devtree_setprop(fdt, node_path, property, qdt_tmp, \
sizeof(qdt_tmp)); \
} while (0)
#endif /* __DEVICE_TREE_H__ */
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