LXR qemu/include/sysemu/device

   1/*
   2 * Header with function prototypes to help device tree manipulation using
   3 * libfdt. It also provides functions to read entries from device tree proc
   4 * interface.
   5 *
   6 * Copyright 2008 IBM Corporation.
   7 * Authors: Jerone Young <jyoung5@us.ibm.com>
   8 *          Hollis Blanchard <hollisb@us.ibm.com>
   9 *
  10 * This work is licensed under the GNU GPL license version 2 or later.
  11 *
  12 */
  13
  14#ifndef __DEVICE_TREE_H__
  15#define __DEVICE_TREE_H__
  16
  17void *create_device_tree(int *sizep);
  18void *load_device_tree(const char *filename_path, int *sizep);
  19
  20int qemu_devtree_setprop(void *fdt, const char *node_path,
  21                         const char *property, const void *val_array, int size);
  22int qemu_devtree_setprop_cell(void *fdt, const char *node_path,
  23                              const char *property, uint32_t val);
  24int qemu_devtree_setprop_u64(void *fdt, const char *node_path,
  25                             const char *property, uint64_t val);
  26int qemu_devtree_setprop_string(void *fdt, const char *node_path,
  27                                const char *property, const char *string);
  28int qemu_devtree_setprop_phandle(void *fdt, const char *node_path,
  29                                 const char *property,
  30                                 const char *target_node_path);
  31const void *qemu_devtree_getprop(void *fdt, const char *node_path,
  32                                 const char *property, int *lenp);
  33uint32_t qemu_devtree_getprop_cell(void *fdt, const char *node_path,
  34                                   const char *property);
  35uint32_t qemu_devtree_get_phandle(void *fdt, const char *path);
  36uint32_t qemu_devtree_alloc_phandle(void *fdt);
  37int qemu_devtree_nop_node(void *fdt, const char *node_path);
  38int qemu_devtree_add_subnode(void *fdt, const char *name);
  39
  40#define qemu_devtree_setprop_cells(fdt, node_path, property, ...)             \
  41    do {                                                                      \
  42        uint32_t qdt_tmp[] = { __VA_ARGS__ };                                 \
  43        int i;                                                                \
  44                                                                              \
  45        for (i = 0; i < ARRAY_SIZE(qdt_tmp); i++) {                           \
  46            qdt_tmp[i] = cpu_to_be32(qdt_tmp[i]);                             \
  47        }                                                                     \
  48        qemu_devtree_setprop(fdt, node_path, property, qdt_tmp,               \
  49                             sizeof(qdt_tmp));                                \
  50    } while (0)
  51
  52void qemu_devtree_dumpdtb(void *fdt, int size);
  53
  54#endif /* __DEVICE_TREE_H__ */
  55