1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2020 Western Digital Corporation or its affiliates.
6 #include <linux/errno.h>
9 #include <linux/string.h>
10 #include <linux/sched.h>
11 #include <asm/cpu_ops.h>
15 const struct cpu_operations *cpu_ops[NR_CPUS] __ro_after_init;
17 extern const struct cpu_operations cpu_ops_sbi;
18 #ifdef CONFIG_RISCV_BOOT_SPINWAIT
19 extern const struct cpu_operations cpu_ops_spinwait;
21 const struct cpu_operations cpu_ops_spinwait = {
28 void __init cpu_set_ops(int cpuid)
30 #if IS_ENABLED(CONFIG_RISCV_SBI)
31 if (sbi_probe_extension(SBI_EXT_HSM) > 0) {
33 pr_info("SBI HSM extension detected\n");
34 cpu_ops[cpuid] = &cpu_ops_sbi;
37 cpu_ops[cpuid] = &cpu_ops_spinwait;