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https://github.com/riscv-software-src/opensbi
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ce4dc7649e
Add the helpers to build up the cache hierarchy via FDT and provide some cmo functions for the user who want to flush the entire cache. Signed-off-by: Nick Hu <nick.hu@sifive.com> Reviewed-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20251020-cache-upstream-v7-4-69a132447d8a@sifive.com Signed-off-by: Anup Patel <anup@brainfault.org>
41 lines
860 B
C
41 lines
860 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2025 SiFive Inc.
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*/
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#ifndef __FDT_CMO_HELPER_H__
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#define __FDT_CMO_HELPER_H__
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#ifdef CONFIG_FDT_CACHE
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/**
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* Flush the private first level cache of the current hart
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*
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* @return 0 on success, or a negative error code on failure
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*/
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int fdt_cmo_private_flc_flush_all(void);
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/**
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* Flush the last level cache of the current hart
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*
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* @return 0 on success, or a negative error code on failure
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*/
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int fdt_cmo_llc_flush_all(void);
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/**
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* Initialize the cache devices for each hart
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*
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* @param fdt devicetree blob
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* @param cold_boot cold init or warm init
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*
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* @return 0 on success, or a negative error code on failure
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*/
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int fdt_cmo_init(bool cold_boot);
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#else
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static inline int fdt_cmo_init(bool cold_boot) { return 0; }
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#endif /* CONFIG_FDT_CACHE */
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#endif /* __FDT_CMO_HELPER_H__ */
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