Files
opensbi/lib/sbi_system.c
Nick Kossifidis b44878b773 lib: Send IPI for all harts to hang on system shutdown
In case the platform specific method for shutting down
the system fails (or is not implemented), at least make
sure that all harts hang instead of just the current hart.

Signed-off-by: Nick Kossifidis <mick@ics.forth.gr>
2019-02-18 09:21:58 +05:30

48 lines
1.2 KiB
C

/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
* Nick Kossifidis <mick@ics.forth.gr>
*/
#include <sbi/sbi_hart.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_system.h>
#include <sbi/sbi_ipi.h>
int sbi_system_early_init(struct sbi_scratch *scratch, bool cold_boot)
{
return sbi_platform_early_init(sbi_platform_ptr(scratch),
cold_boot);
}
int sbi_system_final_init(struct sbi_scratch *scratch, bool cold_boot)
{
return sbi_platform_final_init(sbi_platform_ptr(scratch),
cold_boot);
}
void __attribute__((noreturn)) sbi_system_reboot(struct sbi_scratch *scratch,
u32 type)
{
sbi_platform_system_reboot(sbi_platform_ptr(scratch), type);
sbi_hart_hang();
}
void __attribute__((noreturn)) sbi_system_shutdown(struct sbi_scratch *scratch,
u32 type)
{
/* First try the platform-specific method */
sbi_platform_system_shutdown(sbi_platform_ptr(scratch), type);
/* If that fails (or is not implemented) send an IPI on every
* hart to hang and then hang the current hart */
sbi_ipi_send_many(scratch, NULL, SBI_IPI_EVENT_HALT);
sbi_hart_hang();
}