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/*
* 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/riscv_asm.h>
#include <sbi/sbi_bitops.h>
#include <sbi/sbi_hart.h>
#include <sbi/sbi_hsm.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_system.h>
#include <sbi/sbi_ipi.h>
#include <sbi/sbi_init.h>
void __noreturn sbi_system_reset(u32 platform_reset_type)
{
ulong hbase = 0, hmask;
u32 cur_hartid = current_hartid();
struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
/* Send HALT IPI to every hart other than the current hart */
while (!sbi_hsm_hart_started_mask(hbase, &hmask)) {
if (hbase <= cur_hartid)
hmask &= ~(1UL << (cur_hartid - hbase));
if (hmask)
sbi_ipi_send_halt(hmask, hbase);
hbase += BITS_PER_LONG;
}
/* Stop current HART */
sbi_hsm_hart_stop(scratch, FALSE);
/* Platform specific reset */
sbi_platform_system_reset(sbi_platform_ptr(scratch),
platform_reset_type);
/* If platform specific reset did not work then do sbi_exit() */
sbi_exit(scratch);
}
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