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Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
4 */
5#ifndef _ASM_BOOTINFO_H
6#define _ASM_BOOTINFO_H
7
8#include <linux/types.h>
9#include <asm/setup.h>
10
11const char *get_system_type(void);
12
13extern void init_environ(void);
14extern void memblock_init(void);
15extern void platform_init(void);
16extern int __init init_numa_memory(void);
17
18struct loongson_board_info {
19 int bios_size;
20 const char *bios_vendor;
21 const char *bios_version;
22 const char *bios_release_date;
23 const char *board_name;
24 const char *board_vendor;
25};
26
27#define NR_WORDS DIV_ROUND_UP(NR_CPUS, BITS_PER_LONG)
28
29/*
30 * The "core" of cores_per_node and cores_per_package stands for a
31 * logical core, which means in a SMT system it stands for a thread.
32 */
33struct loongson_system_configuration {
34 int nr_cpus;
35 int nr_nodes;
36 int boot_cpu_id;
37 int cores_per_node;
38 int cores_per_package;
39 unsigned long cores_io_master[NR_WORDS];
40 unsigned long suspend_addr;
41 const char *cpuname;
42};
43
44extern u64 efi_system_table;
45extern unsigned long fw_arg0, fw_arg1, fw_arg2;
46extern struct loongson_board_info b_info;
47extern struct loongson_system_configuration loongson_sysconf;
48
49static inline bool io_master(int cpu)
50{
51 return test_bit(cpu, loongson_sysconf.cores_io_master);
52}
53
54#endif /* _ASM_BOOTINFO_H */