41 lines
776 B
C
41 lines
776 B
C
/*
|
|
* Copyright (c) 2015 Wind River Systems, Inc.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file x86-specific reboot functionalities
|
|
*
|
|
* @details Implements the required 'arch' sub-APIs.
|
|
*/
|
|
|
|
#include <zephyr/kernel.h>
|
|
#include <zephyr/sys/reboot.h>
|
|
|
|
/* reboot through Reset Control Register (I/O port 0xcf9) */
|
|
|
|
#define X86_RST_CNT_REG 0xcf9
|
|
#define X86_RST_CNT_SYS_RST 0x02
|
|
#define X86_RST_CNT_CPU_RST 0x4
|
|
#define X86_RST_CNT_FULL_RST 0x08
|
|
|
|
static inline void cold_reboot(void)
|
|
{
|
|
uint8_t reset_value = X86_RST_CNT_CPU_RST | X86_RST_CNT_SYS_RST |
|
|
X86_RST_CNT_FULL_RST;
|
|
sys_out8(reset_value, X86_RST_CNT_REG);
|
|
}
|
|
|
|
void sys_arch_reboot(int type)
|
|
{
|
|
switch (type) {
|
|
case SYS_REBOOT_COLD:
|
|
cold_reboot();
|
|
break;
|
|
default:
|
|
/* do nothing */
|
|
break;
|
|
}
|
|
}
|