forked from Mirrors/opensbi
a6395acd6c
The unpriv load/store instruction from M-mode can cause page/access fault to M-mode if S-mode page table did not have mappings OR it did not have PMP access permission. To tackle this, we redirect trap back to S-mode if unpriv load/store instruction traps in M-mode. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
46 lines
1.2 KiB
C
46 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), 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), cold_boot);
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}
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void __attribute__((noreturn))
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sbi_system_reboot(struct sbi_scratch *scratch, 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))
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sbi_system_shutdown(struct sbi_scratch *scratch, 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, NULL, SBI_IPI_EVENT_HALT, NULL);
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sbi_hart_hang();
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}
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