arch/loongarch/include/asm/bootinfo.h

   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
  11 const char *get_system_type(void);
  12
  13 extern void init_environ(void);
  14 extern void memblock_init(void);
  15 extern void platform_init(void);
  16 extern int __init init_numa_memory(void);
  17
  18 struct 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  */
  33 struct 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
  44 extern u64 efi_system_table;
  45 extern unsigned long fw_arg0, fw_arg1, fw_arg2;
  46 extern struct loongson_board_info b_info;
  47 extern struct loongson_system_configuration loongson_sysconf;
  48
  49 static inline bool io_master(int cpu)
  50 {
  51         return test_bit(cpu, loongson_sysconf.cores_io_master);
  52 }
  53
  54 #endif /* _ASM_BOOTINFO_H */