Hardware/Software Interface
Page 69
Command WDOG_ARM
Command WDOG_ARM_STATE
4.3.1.3
Power Resume Mode Commands
These commands allow configuring the behavior of the BL70S in case the power is
reapplied after a power failure and input voltages return to their allowed limits.
The setting is persistent, i.e. it is stored in non-volatile memory.
The default resume mode after factory programming is "On".
Table 36.
BMC API – Power resume mode commands
Table 37.
BMC API – Power resume modes
S0 to S5 are the power states as defined in the ACPI specification, or an equivalent state.
Opcode:
0x18
Packet Type:
PT_SB
Opcode:
0x19
Packet Type:
PT_RBD
Bit
7
6
5
4
3
2
1
0
Data
ARM_STATE
Bit Field
Description
ARM_STATE
Watchdog arming state
0x00
: Not armed
0x01
: Armed
0xFF
: Error
Command
Packet Type
Opcode
Functional Description
RESUME_MODE_SET PT_WBD
0x20
Set power resume mode
RESUME_MODE_GET PT_RBD
0x20
Get power resume mode
Resume Mode
System State at Power Loss
Resume Action
On
On
Start power-up sequence
Off
Start power-up sequence
Off
On
Stay in S4/S5 state
Off
Stay in S4/S5 state
Former
On
Start power-up sequence
Off
Stay in S4/S5 state
See the ACPI Specification for more details on the power states S0 to S5:
Advanced Configuration and Power Interface Specification Version 6.1
January, 2016
Unified EFI Forum
