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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-08-25 GuEe-GUI first version
*/
#ifndef __OFW_INTERNAL_H__
#define __OFW_INTERNAL_H__
#include <rtthread.h>
#include <posix/string.h>
#include <drivers/ofw.h>
#define OFW_PHANDLE_MIN 1
#define OFW_PHANDLE_MAX FDT_MAX_PHANDLE
#define OFW_NODE_MAX_DEPTH 64
#define OFW_NODE_MIN_HASH 128
#define OFW_ROOT_NODE_ADDR_CELLS_DEFAULT 1
#define OFW_ROOT_NODE_SIZE_CELLS_DEFAULT 1
struct fdt_info
{
/* Always "/", because we save "ofw" information in root node. */
char name[sizeof("/")];
/* Information start */
void *fdt;
/* Only root can use */
struct fdt_reserve_entry *rsvmap;
rt_size_t rsvmap_nr;
};
struct alias_info
{
rt_list_t list;
int id;
const char *tag;
rt_size_t tag_len;
struct rt_ofw_node *np;
};
struct bus_ranges
{
rt_size_t nr;
struct rt_ofw_node *np;
rt_uint64_t *child_addr;
rt_uint64_t *parent_addr;
rt_uint64_t *child_size;
};
extern struct rt_ofw_node *ofw_node_root;
extern struct rt_ofw_node *ofw_node_cpus;
extern struct rt_ofw_node *ofw_node_chosen;
extern struct rt_ofw_node *ofw_node_aliases;
extern struct rt_ofw_node *ofw_node_reserved_memory;
extern struct rt_fdt_earlycon fdt_earlycon;
#define ofw_static_cast(to_type, value) \
(to_type)(((value) >> ((sizeof(value) - sizeof(to_type)) * 8)))
rt_err_t ofw_alias_scan(void);
int ofw_alias_node_id(struct rt_ofw_node *np);
rt_err_t ofw_phandle_hash_reset(rt_phandle min, rt_phandle max);
#endif /* __OFW_INTERNAL_H__ */
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