forked from Mirrors/opensbi
74756891cc
This patch implements the SBI HSM suspend function. Using this new SBI call, the S-mode software can put calling HART in platform specific suspend (i.e. low-power) state. For a successful retentive suspend, the SBI call will return without errors upon resuming whereas for a successful non-retentive suspend, the SBI call will resume from a user provided resume address. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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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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* Authors:
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* Atish Patra <atish.patra@wdc.com>
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*/
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#ifndef __SBI_HSM_H__
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#define __SBI_HSM_H__
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#include <sbi/sbi_types.h>
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struct sbi_domain;
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struct sbi_scratch;
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int sbi_hsm_init(struct sbi_scratch *scratch, u32 hartid, bool cold_boot);
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void __noreturn sbi_hsm_exit(struct sbi_scratch *scratch);
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int sbi_hsm_hart_start(struct sbi_scratch *scratch,
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const struct sbi_domain *dom,
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u32 hartid, ulong saddr, ulong smode, ulong priv);
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int sbi_hsm_hart_stop(struct sbi_scratch *scratch, bool exitnow);
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void sbi_hsm_hart_resume_start(struct sbi_scratch *scratch);
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void sbi_hsm_hart_resume_finish(struct sbi_scratch *scratch);
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int sbi_hsm_hart_suspend(struct sbi_scratch *scratch, u32 suspend_type,
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ulong raddr, ulong rmode, ulong priv);
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int sbi_hsm_hart_get_state(const struct sbi_domain *dom, u32 hartid);
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int sbi_hsm_hart_interruptible_mask(const struct sbi_domain *dom,
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ulong hbase, ulong *out_hmask);
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void sbi_hsm_prepare_next_jump(struct sbi_scratch *scratch, u32 hartid);
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#endif
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