a638223df3
Intel ISH SoC can't reboot via RST_CNT register, so make sys_arch_reboot as weak function to allow implement different arch reboot in SoC layer. Signed-off-by: Dong Wang <dong.d.wang@intel.com> Signed-off-by: Qipeng Zha <qipeng.zha@intel.com>
41 lines
783 B
C
41 lines
783 B
C
/*
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* Copyright (c) 2015 Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file x86-specific reboot functionalities
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*
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* @details Implements the required 'arch' sub-APIs.
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/sys/reboot.h>
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/* reboot through Reset Control Register (I/O port 0xcf9) */
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#define X86_RST_CNT_REG 0xcf9
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#define X86_RST_CNT_SYS_RST 0x02
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#define X86_RST_CNT_CPU_RST 0x4
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#define X86_RST_CNT_FULL_RST 0x08
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static inline void cold_reboot(void)
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{
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uint8_t reset_value = X86_RST_CNT_CPU_RST | X86_RST_CNT_SYS_RST |
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X86_RST_CNT_FULL_RST;
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sys_out8(reset_value, X86_RST_CNT_REG);
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}
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void __weak sys_arch_reboot(int type)
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{
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switch (type) {
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case SYS_REBOOT_COLD:
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cold_reboot();
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break;
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default:
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/* do nothing */
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break;
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}
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}
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