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/*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
*/
#include <sbi/riscv_io.h>
#include <sbi/sbi_ecall_interface.h>
#include <sbi/sbi_system.h>
#include <sbi_utils/sys/sifive_test.h>
#define FINISHER_FAIL 0x3333
#define FINISHER_PASS 0x5555
#define FINISHER_RESET 0x7777
static void *sifive_test_base;
static int sifive_test_system_reset_check(u32 type, u32 reason)
{
switch (type) {
case SBI_SRST_RESET_TYPE_SHUTDOWN:
case SBI_SRST_RESET_TYPE_COLD_REBOOT:
case SBI_SRST_RESET_TYPE_WARM_REBOOT:
return 1;
}
return 0;
}
static void sifive_test_system_reset(u32 type, u32 reason)
{
/*
* Tell the "finisher" that the simulation
* was successful so that QEMU exits
*/
switch (type) {
case SBI_SRST_RESET_TYPE_SHUTDOWN:
if (reason == SBI_SRST_RESET_REASON_NONE)
writew(FINISHER_PASS, sifive_test_base);
else
writew(FINISHER_FAIL, sifive_test_base);
break;
case SBI_SRST_RESET_TYPE_COLD_REBOOT:
case SBI_SRST_RESET_TYPE_WARM_REBOOT:
writew(FINISHER_RESET, sifive_test_base);
break;
}
}
static struct sbi_system_reset_device sifive_test_reset = {
.name = "sifive_test",
.system_reset_check = sifive_test_system_reset_check,
.system_reset = sifive_test_system_reset
};
int sifive_test_init(unsigned long base)
{
sifive_test_base = (void *)base;
sbi_system_reset_add_device(&sifive_test_reset);
return 0;
}
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