// SPDX-License-Identifier: GPL-2.0-only/* * Copyright (c) 2020 Western Digital Corporation or its affiliates. */ #include <linux/errno.h>#include <linux/mm.h>#include <linux/of.h>#include <linux/string.h>#include <linux/sched.h>#include <asm/cpu_ops.h>#include <asm/cpu_ops_sbi.h>#include <asm/sbi.h>#include <asm/smp.h> const struct cpu_operations *cpu_ops __ro_after_init = &cpu_ops_spinwait; extern const struct cpu_operations cpu_ops_sbi;#ifndef CONFIG_RISCV_BOOT_SPINWAITconst struct cpu_operations cpu_ops_spinwait = {	.cpu_start	= NULL,};#endif void __init cpu_set_ops(void){#if IS_ENABLED(CONFIG_RISCV_SBI)	if (sbi_probe_extension(SBI_EXT_HSM)) {		pr_info("SBI HSM extension detected\n");		cpu_ops = &cpu_ops_sbi;	}#endif}