Alert Standard Format (ASF) Specification

Alert Standard Format (ASF) Specification v2.0 DMTF Document DSP0136
DSP0136 23 April 2003 Page 82 of 94
Reset
The reset function causes a low latency reset of the system. This reset must, at a minimum,
reset the host processor(s) and cause PCI Reset# to be asserted so that all devices on the PCI
bus are initialized.
If supported, the reset function is required to produce the reset in these system states:
• S0/G0 “working”
• S1
• S2
• S3
• Legacy ON state.
• Sleeping in an S1, S2, or S3 state, or Legacy SLEEP
• G1 sleeping
Operation in all other system states is undefined by this specification.
Power-Up
The power-up function brings a sleeping system into the S0/G0 “working” state or into the Legacy
ON state.
If supported, the power-up function is required to produce the power-up in any of these sleeping
states:
• S4
• S5/G2
• S4/S5 soft-off
• S5 entered by override
• Legacy OFF
Operation in all other system states is undefined by this specification.
Unconditional Power-Down
The unconditional power-down function forces the system into an S5 entered by override or a
Legacy OFF powered off state. This power-down occurs without any blocking from software or
the system. Because of this, ACPI and system state context is not guaranteed to be preserved.
The unconditional power-down function is required to produce the power-down in these system
states:
• S0/G0 “working”
• S1
• S2
• S3
• Legacy ON state
• Sleeping in an S1, S2, or S3 state, or Legacy SLEEP
• G1 sleeping
Operation in all other system states is undefined by this specification.
Power Cycle Reset
The power cycle reset function causes a hard reset of the system. This reset must be functionally
equivalent to an Unconditional Power-Down operation, followed by a Power Up operation.
If supported, the power cycle reset function is required to produce the reset in these system
states:
• S0/G0 “working”
• S1