Archipelago » qemu

/*

 * 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 *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);

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__ */