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