mirror of https://gitee.com/openkylin/qemu.git
55 lines
2.6 KiB
C
55 lines
2.6 KiB
C
/*
|
|
* 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, const 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_u64(void *fdt, const char *node_path,
|
|
const char *property, uint64_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);
|
|
const void *qemu_devtree_getprop(void *fdt, const char *node_path,
|
|
const char *property, int *lenp);
|
|
uint32_t qemu_devtree_getprop_cell(void *fdt, const char *node_path,
|
|
const char *property);
|
|
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)
|
|
|
|
void qemu_devtree_dumpdtb(void *fdt, int size);
|
|
|
|
#endif /* __DEVICE_TREE_H__ */
|