forked from Mirrors/opensbi
5c429ae213
To implement the SBI SRST extension, we need two platform operations for system reset: 1) system_reset_check() - This operation will check whether given reset type and reason are supported by the platform 2) system_reset() - This operation will do the actual platform system reset and it will not return if reset type and reason are supported by the platform This patch updates system reset related code everywhere as-per above. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2020 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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*/
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#include <sbi/riscv_io.h>
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#include <sbi/sbi_ecall_interface.h>
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#include <sbi_utils/sys/sifive_test.h>
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#define FINISHER_FAIL 0x3333
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#define FINISHER_PASS 0x5555
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#define FINISHER_RESET 0x7777
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static void *sifive_test_base;
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int sifive_test_system_reset_check(u32 type, u32 reason)
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{
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switch (type) {
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case SBI_SRST_RESET_TYPE_SHUTDOWN:
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case SBI_SRST_RESET_TYPE_COLD_REBOOT:
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case SBI_SRST_RESET_TYPE_WARM_REBOOT:
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return 1;
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}
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return 0;
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}
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void sifive_test_system_reset(u32 type, u32 reason)
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{
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/*
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* Tell the "finisher" that the simulation
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* was successful so that QEMU exits
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*/
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switch (type) {
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case SBI_SRST_RESET_TYPE_SHUTDOWN:
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if (reason == SBI_SRST_RESET_REASON_NONE)
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writew(FINISHER_PASS, sifive_test_base);
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else
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writew(FINISHER_FAIL, sifive_test_base);
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break;
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case SBI_SRST_RESET_TYPE_COLD_REBOOT:
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case SBI_SRST_RESET_TYPE_WARM_REBOOT:
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writew(FINISHER_RESET, sifive_test_base);
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break;
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}
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}
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int sifive_test_init(unsigned long base)
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{
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sifive_test_base = (void *)base;
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return 0;
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}
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