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https://github.com/riscv-software-src/opensbi.git
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Nicholas Piggin
a59c8fb9fb
The sbi_hart_pmp.c looks like a good place for the hart PMP CSR access functions. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20260430045528.420437-9-npiggin@gmail.com Signed-off-by: Anup Patel <anup@brainfault.org>
34 lines
946 B
C
34 lines
946 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2025 Ventana Micro Systems Inc.
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*/
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#ifndef __SBI_HART_PMP_H__
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#define __SBI_HART_PMP_H__
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#include <sbi/sbi_types.h>
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/* Disable pmp entry at a given index */
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int sbi_hart_pmp_disable(unsigned int n);
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/* Check if the matching field is set */
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bool sbi_hart_is_pmp_enabled(unsigned int n);
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int sbi_hart_pmp_set(unsigned int n, unsigned long prot,
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unsigned long addr, unsigned long log2len);
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int sbi_hart_pmp_get(unsigned int n, unsigned long *prot_out,
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unsigned long *addr_out, unsigned long *log2len);
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struct sbi_scratch;
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unsigned int sbi_hart_pmp_count(struct sbi_scratch *scratch);
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unsigned int sbi_hart_pmp_log2gran(struct sbi_scratch *scratch);
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unsigned int sbi_hart_pmp_addrbits(struct sbi_scratch *scratch);
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bool sbi_hart_smepmp_is_fw_region(unsigned int pmp_idx);
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void sbi_hart_pmp_fence(void);
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int sbi_hart_pmp_init(struct sbi_scratch *scratch);
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#endif
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