Set Watchdog Timer 命令详情
更新时间：2025/06/26
在Gitcode上查看源码修订记录
| openUBMC版本号 | 修订日期 | 修订人 | 修订内容 |
|---|---|---|---|
| 25.06 | 2025/06/26 | pengqiang-gs | 初稿，新增命令详情 |
基本信息
功能说明
标准命令，初始值/配置看门狗的计数器。 The Set Watchdog Timer command is used for initializing and configuring the watchdog timer. The command is also used for stopping the timer.
权限
PowerMgmt
命令信息
请求信息
| 字节顺序 | 域取值说明 |
|---|---|
| 1 | Timer Use [7] - 1b = don’t log [6] 1b = don’t stop timer on Set Watchdog Timer command (new for IPMI v1.5) new parameters take effect immediately. If timer is already running, countdown value will get set to given value and countdown will continue from that point. If timer is already stopped, it will remain stopped. If the pre-timeout interrupt bit is set, it will get cleared. 0b = timer stops automatically when Set Watchdog Timer command is received [5:3] - reserved [2:0] - timer use (logged on expiration when “don’t log” bit = 0b) 000b = reserved 001b = BIOS FRB2 010b = BIOS/POST 011b = OS Load 100b = SMS/OS 101b = OEM 110b -111b = reserved |
| 2 | Timer Actions [7] - reserved [6:4] - pre-timeout interrupt (logged on expiration when “don’t log” bit = 0b) 000b = none 001b = SMI (optional) 010b = NMI / Diagnostic Interrupt (optional) 011b = Messaging Interrupt (this is the same interrupt as allocated to the messaging interface, if communications interrupts are supported for the system interface) 100b,111b = reserved [3] - reserved [2:0] - timeout action 000b = no action 001b = Hard Reset 010b = Power Down 011b = Power Cycle 100b,111b = reserved |
| 3 | Pre-timeout interval in seconds. ‘1’ based. |
| 4 | Timer Use Expiration flags clear (0b = leave alone, 1b = clear timer use expiration bit) [7] - reserved [6] - reserved [5] - OEM [4] - SMS/OS [3] - OS Load [2] - BIOS/POST [1] - BIOS FRB2 [0] - reserved |
| 5 | Initial countdown value, lsbyte (100 ms/count) |
| 6 | Initial countdown value, msbyte |
响应信息
| 字节顺序 | 域取值说明 |
|---|---|
| 1 | Completion Code |
命令样例
样例1：设置看门狗的计数器
- 请求：
- 响应：