mirror of
https://github.com/riscv-software-src/opensbi.git
synced 2025-08-24 15:31:22 +01:00
90cb4917b5
Currently, OpenSBI doesn't distinguish between sfence.vma and sfence.vm asid calls. Moreover, it ignores the page ranges and just flush entire TLB everytime. Fix the sfence implementation by keeping all the tlb flush info in scratch area. The relevant Linux kernel code was added by https://patchwork.kernel.org/project/linux-riscv/list/?series=89695 However, this patch is backward compatible with older version kernel that doesn't have the above patches as well. Fixes #87 Signed-off-by: Atish Patra <atish.patra@wdc.com>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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* Nick Kossifidis <mick@ics.forth.gr>
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*/
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#include <sbi/sbi_hart.h>
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#include <sbi/sbi_platform.h>
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#include <sbi/sbi_system.h>
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#include <sbi/sbi_ipi.h>
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int sbi_system_early_init(struct sbi_scratch *scratch, bool cold_boot)
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{
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return sbi_platform_early_init(sbi_platform_ptr(scratch),
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cold_boot);
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}
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int sbi_system_final_init(struct sbi_scratch *scratch, bool cold_boot)
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{
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return sbi_platform_final_init(sbi_platform_ptr(scratch),
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cold_boot);
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}
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void __attribute__((noreturn)) sbi_system_reboot(struct sbi_scratch *scratch,
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u32 type)
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{
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sbi_platform_system_reboot(sbi_platform_ptr(scratch), type);
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sbi_hart_hang();
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}
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void __attribute__((noreturn)) sbi_system_shutdown(struct sbi_scratch *scratch,
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u32 type)
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{
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/* First try the platform-specific method */
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sbi_platform_system_shutdown(sbi_platform_ptr(scratch), type);
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/* If that fails (or is not implemented) send an IPI on every
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* hart to hang and then hang the current hart */
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sbi_ipi_send_many(scratch, NULL, SBI_IPI_EVENT_HALT, NULL);
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sbi_hart_hang();
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}
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