Leo-Patch 1.6 · Q1HY MoDT · Observations 14 October 2026
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Overview / Manual / PCI Express Root Port 13
PCIe and Graphics
PCI Express Root Port 13
PCI Express Root Port 13 firmware setup page decoded from AMI HII/IFR resources.
Form ID 0x13f0
Records 34
Path Setup / Chipset / PCH-IO Configuration / PCI Express Configuration / PCI Express Root Port 13
Record 3684
PCI Express Root Port 13 Firmware Value
Control the PCI Express Root Port.
Opcode OneOf
Question ID 0xd83
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x10b
Width 1 byte(s)
Range 0 to 1 step 0 Permalink
Record 3685
Connection Type Firmware Value
Built-In: a built-in device is connected to this rootport.
Firmware help text Built-In: a built-in device is connected to this rootport. SlotImplemented bit will be clear. Slot: this rootport connects to user-accessible slot. SlotImplemented bit will be set.
Opcode OneOf
Question ID 0xd84
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x373
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} {"condition_id": 1580, "type": "GrayOutIf", "offset": 490663, "expr": ["EqIdVal QuestionId: 0xD91, Value: 0x1"]} Permalink
Set the ASPM Level: Force L0s - Force all links to L0s State AUTO - BIOS auto configure DISABLE - Disables ASPM
Firmware help text Set the ASPM Level:
Force L0s - Force all links to L0s State
AUTO - BIOS auto configure
DISABLE - Disables ASPM
Opcode OneOf
Question ID 0x15ec
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x127
Width 1 byte(s)
Range 0 to 4 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
PCI Express L1 Substates settings.
Opcode OneOf
Question ID 0x1608
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x2cb
Width 1 byte(s)
Range 0 to 2 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
PCI Express L1 Low Substate Enable/Disable.
Opcode OneOf
Question ID 0xd85
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x2e7
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Enable/Disable Access Control Services Extended Capability
Opcode OneOf
Question ID 0xd86
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x303
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Enable/Disable Precision Time Measurement
Opcode OneOf
Question ID 0x1624
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x31f
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Enable/Disable Downstream Port Containment
Opcode OneOf
Question ID 0xd87
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x33b
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Enable/Disable Rootport extensions for Downstream Port Containment
Opcode OneOf
Question ID 0xd88
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x357
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
PCI Express Unsupported Request Reporting Enable/Disable.
Opcode OneOf
Question ID 0xd89
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x143
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
PCI Express Device Fatal Error Reporting Enable/Disable.
Opcode OneOf
Question ID 0xd8a
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x15f
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
PCI Express Device Non-Fatal Error Reporting Enable/Disable.
Opcode OneOf
Question ID 0xd8b
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x17b
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
PCI Express Device Correctable Error Reporting Enable/Disable.
Opcode OneOf
Question ID 0xd8c
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x197
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Root PCI Express System Error on Fatal Error Enable/Disable.
Opcode OneOf
Question ID 0xd8d
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x1eb
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Root PCI Express System Error on Non-Fatal Error Enable/Disable.
Opcode OneOf
Question ID 0xd8e
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x207
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Root PCI Express System Error on Correctable Error Enable/Disable.
Opcode OneOf
Question ID 0xd8f
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x223
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
PCI Express PME SCI Enable/Disable.
Opcode OneOf
Question ID 0xd90
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x23f
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
PCI Express Hot Plug Enable/Disable.
Opcode OneOf
Question ID 0xd91
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x25b
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} {"condition_id": 1581, "type": "GrayOutIf", "offset": 491215, "expr": ["EqIdVal QuestionId: 0xD84, Value: 0x0"]} Permalink
Record 3702
Advanced Error Reporting Firmware Value
Advanced Error Reporting Enable/Disable.
Opcode OneOf
Question ID 0xd92
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x277
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Configure PCIe Speed
Opcode OneOf
Question ID 0xd93
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x293
Width 1 byte(s)
Range 0 to 3 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Record 3704
Transmitter Half Swing Firmware Value
Transmitter Half Swing Enable/Disable.
Opcode OneOf
Question ID 0xd94
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x2af
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Record 3705
Detect Timeout Firmware Value
The number of milliseconds reference code will wait for link to exit Detect state for enabled ports before assuming there is no device and potentially disabling the port.
Opcode Numeric
Question ID 0xd95
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x39b
Width 2 byte(s)
Range 0 to 65535 step 1 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Record 3706
Extra Bus Reserved Firmware Value
Extra Bus Reserved (0-7) for bridges behind this Root Bridge.
Opcode Numeric
Question ID 0xd96
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x52b
Width 1 byte(s)
Range 0 to 7 step 1 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Record 3707
Reserved Memory Firmware Value
Reserved Memory for this Root Bridge (1-20) MB
Opcode Numeric
Question ID 0xd97
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x553
Width 2 byte(s)
Range 1 to 20 step 1 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Reserved I/O (4K/8K/12K/16K/20K) Range for this Root Bridge.
Opcode Numeric
Question ID 0xd98
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x57f
Width 1 byte(s)
Range 4 to 20 step 4 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
PCH PCIE Latency Reporting Enable/Disable
Opcode OneOf
Question ID 0xd99
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x3ef
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Record 3710
Snoop Latency Override Firmware Value
Snoop Latency Override for PCH PCIE.
Firmware help text Snoop Latency Override for PCH PCIE.
Disabled: Disable override.
Manual: Manually enter override values.
Auto (default): Maintain default BIOS flow.
Opcode OneOf
Question ID 0xd9a
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x427
Width 1 byte(s)
Range 0 to 2 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]} Permalink
Record 3711
Snoop Latency Value Firmware Value
LTR Snoop Latency value of PCH PCIE
Opcode Numeric
Question ID 0xd9b
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x4a3
Width 2 byte(s)
Range 0 to 1023 step 1 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]} {"condition_id": 1583, "type": "SuppressIf", "offset": 491578, "expr": ["EqIdVal QuestionId: 0xD9A, Value: 0x1", "Not"]} Permalink
Record 3712
Snoop Latency Multiplier Firmware Value
LTR Snoop Latency Multiplier of PCH PCIE
Opcode OneOf
Question ID 0xd9c
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x443
Width 1 byte(s)
Range 0 to 5 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]} {"condition_id": 1583, "type": "SuppressIf", "offset": 491578, "expr": ["EqIdVal QuestionId: 0xD9A, Value: 0x1", "Not"]} Permalink
Record 3713
Non Snoop Latency Override Firmware Value
Non Snoop Latency Override for PCH PCIE.
Firmware help text Non Snoop Latency Override for PCH PCIE.
Disabled: Disable override.
Manual: Manually enter override values.
Auto (default): Maintain default BIOS flow.
Opcode OneOf
Question ID 0xd9d
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x45f
Width 1 byte(s)
Range 0 to 2 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]} Permalink
Record 3714
Non Snoop Latency Value Firmware Value
LTR Non Snoop Latency value of PCH PCIE
Opcode Numeric
Question ID 0xd9e
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x4db
Width 2 byte(s)
Range 0 to 1023 step 1 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]} {"condition_id": 1584, "type": "SuppressIf", "offset": 491722, "expr": ["EqIdVal QuestionId: 0xD9D, Value: 0x1", "Not"]} Permalink
Record 3715
Non Snoop Latency Multiplier Firmware Value
LTR Non Snoop Latency Multiplier of PCH PCIE
Opcode OneOf
Question ID 0xd9f
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x47b
Width 1 byte(s)
Range 0 to 5 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} {"condition_id": 1582, "type": "SuppressIf", "offset": 491530, "expr": ["EqIdVal QuestionId: 0xD99, Value: 0x0"]} {"condition_id": 1584, "type": "SuppressIf", "offset": 491722, "expr": ["EqIdVal QuestionId: 0xD9D, Value: 0x1", "Not"]} Permalink
PCIE LTR Configuration Lock
Opcode OneOf
Question ID 0xda0
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0x40b
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink
Record 3717
Peer Memory Write Enable Firmware Value
Peer Memory Write Enable/Disable
Opcode OneOf
Question ID 0xda1
VarStore PchSetup
VarStore GUID 4570B7F1-ADE8-4943-8DC3-406472842384
Offset 0xca
Width 1 byte(s)
Range 0 to 1 step 0 Visibility / conditions {"condition_id": 1579, "type": "SuppressIf", "offset": 490655, "expr": ["EqIdVal QuestionId: 0xD83, Value: 0x0"]} Permalink