79093f3ec3
name is not used anywhere at all. cpu_prepare and cpu_disable do nothing and always return 0 if implemented. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20231121234736.3489608-3-samuel.holland@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
36 lines
819 B
C
36 lines
819 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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*/
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#include <linux/errno.h>
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#include <linux/mm.h>
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#include <linux/of.h>
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#include <linux/string.h>
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#include <linux/sched.h>
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#include <asm/cpu_ops.h>
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#include <asm/cpu_ops_sbi.h>
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#include <asm/sbi.h>
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#include <asm/smp.h>
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const struct cpu_operations *cpu_ops[NR_CPUS] __ro_after_init;
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extern const struct cpu_operations cpu_ops_sbi;
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#ifndef CONFIG_RISCV_BOOT_SPINWAIT
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const struct cpu_operations cpu_ops_spinwait = {
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.cpu_start = NULL,
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};
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#endif
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void __init cpu_set_ops(int cpuid)
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{
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#if IS_ENABLED(CONFIG_RISCV_SBI)
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if (sbi_probe_extension(SBI_EXT_HSM)) {
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if (!cpuid)
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pr_info("SBI HSM extension detected\n");
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cpu_ops[cpuid] = &cpu_ops_sbi;
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} else
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#endif
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cpu_ops[cpuid] = &cpu_ops_spinwait;
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}
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