diff options
Diffstat (limited to 'include/sysemu/device_tree.h')
| -rw-r--r-- | include/sysemu/device_tree.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/sysemu/device_tree.h b/include/sysemu/device_tree.h new file mode 100644 index 0000000000..f0b3f35e03 --- /dev/null +++ b/include/sysemu/device_tree.h @@ -0,0 +1,54 @@ +/* + * 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__ */ |