/* * 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__ */