Re: Half second spend in i8042 during suspend on TUXEDO BU1406

Re: Half second spend in i8042 during suspend on TUXEDO BU1406

[Paul Menzel]

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Dear Voyjtech, dear Dmitry, dear Linux folks,


On 02/08/17 14:12, Paul Menzel wrote:

> On the TUXEDO BU1406 [1] the Linux kernel (tested with 4.10-rc{6,7})
> takes over a second to get into suspend [2]. For whatever reason around
> 550 ms are spent in `i8042_set_mux_mode()` (cf. attached
> `helmuth-N24-25BU_mem.html`), and other processes(?) like *ec* are *not*
> run in parallel but after (cf. attached `helmuth-N24-25BU_mem.html`).
>
> The callgraph is captured with the command below.
>
> ```
> $ sudo ./analyze_suspend.py -config config/suspend-callgraph.cfg -filter
> i8042`
> ```
>
> Looking through it, the delay `delay_tsc()` happens in the code below.
>
> ```
> /*
>  * Internal loopback test - send three bytes, they should come back from
> the
>  * mouse interface, the last should be version.
>  */
>
>         param = val = 0xf0;
>         if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param != val)
>                 return -1;
>         param = val = multiplex ? 0x56 : 0xf6;
>         if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param != val)
>                 return -1;
>         param = val = multiplex ? 0xa4 : 0xa5;
>         if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param == val)
>                 return -1;
> ```
>
> Is that a hardware limitation, or even an error as such long delays are
> not allowed according to some standard?
>
> Is there anything, that can be done about this, to get into S3 state
> faster?
>
> If you want me to create a ticket in the Linux kernel bug tracker [3]
> for this issue, I am happy to do that.

Please find the HTML files in the attached archive, so that the message 
gets delivered as no HTML parts are allowed.


Kind regards,

Paul


> [1]
> https://www.tuxedocomputers.com/Linux-Hardware/Linux-Notebooks/10-14-Zoll/TUXEDO-Book-BU1406-14-matt-Full-HD-IPS-bis-Intel-Core-i7-Energiespar-CPU-zwei-HDD/SSD-bis-32GB-RAM-bis-12h-Akku-Slim-Book-LTE-opt..geek
>
> [2] https://01.org/suspendresume/
> [3] https://bugzilla.kernel.org/

[-- Attachment #2: analyze_suspend-HTML_output.7z --]
[-- Type: application/x-7z-compressed, Size: 33082 bytes --]

Re: Half second spend in i8042 during suspend on TUXEDO BU1406

[Vojtech Pavlik]

On Wed, Feb 08, 2017 at 02:12:44PM +0100, Paul Menzel wrote:

> On the TUXEDO BU1406 [1] the Linux kernel (tested with 4.10-rc{6,7})
> takes over a second to get into suspend [2]. For whatever reason
> around 550 ms are spent in `i8042_set_mux_mode()` (cf. attached
> /*
>  * Internal loopback test - send three bytes, they should come back
> from the
>  * mouse interface, the last should be version.
>  */
> 
>         param = val = 0xf0;
>         if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param != val)
>                 return -1;
>         param = val = multiplex ? 0x56 : 0xf6;
>         if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param != val)
>                 return -1;
>         param = val = multiplex ? 0xa4 : 0xa5;
>         if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param == val)
>                 return -1;
> ```
> 
> Is that a hardware limitation, or even an error as such long delays
> are not allowed according to some standard?

It looks like an EC firmware bug not handling the CMD_AUX_LOOP command
correctly.

> Is there anything, that can be done about this, to get into S3 state faster?

Does it still happen if you specify i8042.nomux=1 on the kernel command
line?

If that helps, it can be added to a blacklist based on DMI.

Vojtech

Re: Half second spend in i8042 during suspend on TUXEDO BU1406

[Paul Menzel]

Dear Vojtech,


On 02/09/17 00:58, Vojtech Pavlik wrote:
> On Wed, Feb 08, 2017 at 02:12:44PM +0100, Paul Menzel wrote:
>
>> On the TUXEDO BU1406 [1] the Linux kernel (tested with 4.10-rc{6,7})
>> takes over a second to get into suspend [2]. For whatever reason
>> around 550 ms are spent in `i8042_set_mux_mode()` (cf. attached
>> /*
>>  * Internal loopback test - send three bytes, they should come back
>> from the
>>  * mouse interface, the last should be version.
>>  */
>>
>>         param = val = 0xf0;
>>         if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param != val)
>>                 return -1;
>>         param = val = multiplex ? 0x56 : 0xf6;
>>         if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param != val)
>>                 return -1;
>>         param = val = multiplex ? 0xa4 : 0xa5;
>>         if (i8042_command(&param, I8042_CMD_AUX_LOOP) || param == val)
>>                 return -1;
>> ```
>>
>> Is that a hardware limitation, or even an error as such long delays
>> are not allowed according to some standard?
>
> It looks like an EC firmware bug not handling the CMD_AUX_LOOP command
> correctly.
>
>> Is there anything, that can be done about this, to get into S3 state faster?
>
> Does it still happen if you specify i8042.nomux=1 on the kernel command
> line?

Starting Linux with that, the delay is gone.

Before:

 > i8042 @ i8042 {i8042} sync_device (Total Suspend: 546.038 ms Total 
Resume: 3.850 ms)

After:

 > i8042 @ i8042 {i8042} sync_device (Total Suspend: 0.973 ms Total 
Resume: 1.369 ms)

What downsides are there of using that `i8042.nomux=1`? Is any 
functionality lost?

> If that helps, it can be added to a blacklist based on DMI.

Sounds good.

```
$ journalctl -k | grep 'DMI:'
Feb 09 10:15:04 helmuth-N24-25BU kernel: DMI: Notebook 
       N24_25BU/N24_25BU, BIOS 5.12 10/11/2016
```


Kind regards,

Paul

Re: Half second spend in i8042 during suspend on TUXEDO BU1406

[Vojtech Pavlik]

On Thu, Feb 09, 2017 at 10:17:56AM +0100, Paul Menzel wrote:

> Starting Linux with that, the delay is gone.
> 
> Before:
> 
> > i8042 @ i8042 {i8042} sync_device (Total Suspend: 546.038 ms Total Resume: 3.850 ms)
> 
> After:
> 
> > i8042 @ i8042 {i8042} sync_device (Total Suspend: 0.973 ms Total Resume: 1.369 ms)
> 
> What downsides are there of using that `i8042.nomux=1`? Is any
> functionality lost?

If the notebook doesn't implement the Active AUX Multiplexing
specification, then there is no functionality lost. 

If it does, and apparently yours doesn't, then you lose the ability to
distinguish between the internal touchpad/touchpoint and an external
connected PS/2 mouse and lose the ability to use any advanced protocol
beyond standard PS/2 mouse.

Apparently the TUXEDO Book BU1406 doesn't have any external AUX port for
mouse, only USB and internally it only seems to have one touchpad, so
there is no need for Active AUX Multiplexing.

> >If that helps, it can be added to a blacklist based on DMI.
> Sounds good.
> 
> $ journalctl -k | grep 'DMI:'
> Feb 09 10:15:04 helmuth-N24-25BU kernel: DMI: Notebook
> N24_25BU/N24_25BU, BIOS 5.12 10/11/2016

A full output of 'dmidecode' would be more useful.

-- 
Vojtech Pavlik
Director SUSE Labs

Re: Half second spend in i8042 during suspend on TUXEDO BU1406

[Paul Menzel]

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Dear Vojtech,


On 02/09/17 12:24, Vojtech Pavlik wrote:
> On Thu, Feb 09, 2017 at 10:17:56AM +0100, Paul Menzel wrote:
>
>> Starting Linux with that, the delay is gone.
>>
>> Before:
>>
>>> i8042 @ i8042 {i8042} sync_device (Total Suspend: 546.038 ms Total Resume: 3.850 ms)
>>
>> After:
>>
>>> i8042 @ i8042 {i8042} sync_device (Total Suspend: 0.973 ms Total Resume: 1.369 ms)
>>
>> What downsides are there of using that `i8042.nomux=1`? Is any
>> functionality lost?
>
> If the notebook doesn't implement the Active AUX Multiplexing
> specification, then there is no functionality lost.
>
> If it does, and apparently yours doesn't, then you lose the ability to
> distinguish between the internal touchpad/touchpoint and an external
> connected PS/2 mouse and lose the ability to use any advanced protocol
> beyond standard PS/2 mouse.
>
> Apparently the TUXEDO Book BU1406 doesn't have any external AUX port for
> mouse, only USB and internally it only seems to have one touchpad, so
> there is no need for Active AUX Multiplexing.
>
>>> If that helps, it can be added to a blacklist based on DMI.
>> Sounds good.
>>
>> $ journalctl -k | grep 'DMI:'
>> Feb 09 10:15:04 helmuth-N24-25BU kernel: DMI: Notebook
>> N24_25BU/N24_25BU, BIOS 5.12 10/11/2016
>
> A full output of 'dmidecode' would be more useful.

```
$ sudo dmidecode -t BIOS
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
	Vendor: American Megatrends Inc.
	Version: 5.12
	Release Date: 10/11/2016
	Address: 0xF0000
	Runtime Size: 64 kB
	ROM Size: 16384 kB
	Characteristics:
		PCI is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		Boot from CD is supported
		Selectable boot is supported
		BIOS ROM is socketed
		EDD is supported
		Print screen service is supported (int 5h)
		8042 keyboard services are supported (int 9h)
		Printer services are supported (int 17h)
		ACPI is supported
		USB legacy is supported
		BIOS boot specification is supported
		Targeted content distribution is supported
		UEFI is supported
	BIOS Revision: 5.12

Handle 0x0026, DMI type 13, 22 bytes
BIOS Language Information
	Language Description Format: Long
	Installable Languages: 1
		en|US|iso8859-1
	Currently Installed Language: en|US|iso8859-1
```

Please find the whole output of `dmidecode` attached.


Kind regards,

Paul

[-- Attachment #2: 20170209–tuxedo_book_bu1406–dmidecode.txt --]
[-- Type: text/plain, Size: 13884 bytes --]

# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Table at 0x7FF19000.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
	Vendor: American Megatrends Inc.
	Version: 5.12
	Release Date: 10/11/2016
	Address: 0xF0000
	Runtime Size: 64 kB
	ROM Size: 16384 kB
	Characteristics:
		PCI is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		Boot from CD is supported
		Selectable boot is supported
		BIOS ROM is socketed
		EDD is supported
		Print screen service is supported (int 5h)
		8042 keyboard services are supported (int 9h)
		Printer services are supported (int 17h)
		ACPI is supported
		USB legacy is supported
		BIOS boot specification is supported
		Targeted content distribution is supported
		UEFI is supported
	BIOS Revision: 5.12

Handle 0x0001, DMI type 1, 27 bytes
System Information
	Manufacturer: Notebook                        
	Product Name: N24_25BU
	Version: Not Applicable                  
	Serial Number: Not Applicable                  
	UUID: 3B5BFA80-F0DD-0000-0000-000000000000
	Wake-up Type: Power Switch
	SKU Number: Not Applicable                  
	Family: Not Applicable                  

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
	Manufacturer: Notebook                        
	Product Name: N24_25BU
	Version: Not Applicable                  
	Serial Number: Not Applicable                  
	Asset Tag: Tag 12345
	Features:
		Board is a hosting board
		Board is replaceable
	Location In Chassis: Not Applicable
	Chassis Handle: 0x0003
	Type: Motherboard
	Contained Object Handles: 0

Handle 0x0003, DMI type 3, 22 bytes
Chassis Information
	Manufacturer: Notebook                        
	Type: Notebook
	Lock: Not Present
	Version: N/A                             
	Serial Number: None                            
	Asset Tag: No Asset Tag
	Boot-up State: Safe
	Power Supply State: Safe
	Thermal State: Safe
	Security Status: None
	OEM Information: 0x00000000
	Height: Unspecified
	Number Of Power Cords: 1
	Contained Elements: 0
	SKU Number: Default string

Handle 0x0004, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J1A1
	Internal Connector Type: None
	External Reference Designator: PS2Mouse
	External Connector Type: PS/2
	Port Type: Mouse Port

Handle 0x0005, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J1A1
	Internal Connector Type: None
	External Reference Designator: Keyboard
	External Connector Type: PS/2
	Port Type: Keyboard Port

Handle 0x0006, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J2A1
	Internal Connector Type: None
	External Reference Designator: TV Out
	External Connector Type: Mini Centronics Type-14
	Port Type: Other

Handle 0x0007, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J2A2A
	Internal Connector Type: None
	External Reference Designator: COM A
	External Connector Type: DB-9 male
	Port Type: Serial Port 16550A Compatible

Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J2A2B
	Internal Connector Type: None
	External Reference Designator: Video
	External Connector Type: DB-15 female
	Port Type: Video Port

Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J3A1
	Internal Connector Type: None
	External Reference Designator: USB1
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J3A1
	Internal Connector Type: None
	External Reference Designator: USB2
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x000B, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J3A1
	Internal Connector Type: None
	External Reference Designator: USB3
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x000C, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J5A1
	Internal Connector Type: None
	External Reference Designator: LAN
	External Connector Type: RJ-45
	Port Type: Network Port

Handle 0x000D, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J5A1
	Internal Connector Type: None
	External Reference Designator: USB4
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x000E, DMI type 9, 17 bytes
System Slot Information
	Designation: J6B2
	Type: x16 PCI Express
	Current Usage: In Use
	Length: Long
	ID: 0
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:01.0

Handle 0x000F, DMI type 10, 8 bytes
On Board Device 1 Information
	Type: Video
	Status: Enabled
	Description:    To Be Filled By O.E.M.
On Board Device 2 Information
	Type: Ethernet
	Status: Enabled
	Description: To Be Filled By O.E.M.

Handle 0x0010, DMI type 11, 5 bytes
OEM Strings
	String 1: 1558
	String 2: OEM String
	String 3: Default string
	String 4: Default string
	String 5: BIOS:1.05.10

Handle 0x0011, DMI type 12, 5 bytes
System Configuration Options
	Option 1: Default string

Handle 0x0012, DMI type 32, 20 bytes
System Boot Information
	Status: No errors detected

Handle 0x0013, DMI type 16, 23 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 32 GB
	Error Information Handle: Not Provided
	Number Of Devices: 2

Handle 0x0014, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x0013
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 16384 MB
	Form Factor: SODIMM
	Set: None
	Locator: ChannelA-DIMM0
	Bank Locator: BANK 0
	Type: DDR4
	Type Detail: Synchronous
	Speed: 2400 MHz
	Manufacturer: 859B
	Serial Number: A41CC56E
	Asset Tag: 9876543210
	Part Number: BLS16G4S240FSD.16FBD
	Rank: 2
	Configured Clock Speed: 2133 MHz
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V

Handle 0x0015, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x0013
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 16384 MB
	Form Factor: SODIMM
	Set: None
	Locator: ChannelB-DIMM0
	Bank Locator: BANK 2
	Type: DDR4
	Type Detail: Synchronous
	Speed: 2400 MHz
	Manufacturer: 859B
	Serial Number: A3248505
	Asset Tag: 9876543210
	Part Number: BLS16G4S240FSD.16FBD
	Rank: 2
	Configured Clock Speed: 2133 MHz
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V

Handle 0x0016, DMI type 19, 31 bytes
Memory Array Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x007FFFFFFFF
	Range Size: 32 GB
	Physical Array Handle: 0x0013
	Partition Width: 2

Handle 0x0017, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L1 Cache
	Configuration: Enabled, Not Socketed, Level 1
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 128 kB
	Maximum Size: 128 kB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Parity
	System Type: Unified
	Associativity: 8-way Set-associative

Handle 0x0018, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L2 Cache
	Configuration: Enabled, Not Socketed, Level 2
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 512 kB
	Maximum Size: 512 kB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Unified
	Associativity: 4-way Set-associative

Handle 0x0019, DMI type 7, 19 bytes
Cache Information
	Socket Designation: L3 Cache
	Configuration: Enabled, Not Socketed, Level 3
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 4096 kB
	Maximum Size: 4096 kB
	Supported SRAM Types:
		Synchronous
	Installed SRAM Type: Synchronous
	Speed: Unknown
	Error Correction Type: Multi-bit ECC
	System Type: Unified
	Associativity: 16-way Set-associative

Handle 0x001A, DMI type 4, 48 bytes
Processor Information
	Socket Designation: U3E1
	Type: Central Processor
	Family: Core i7
	Manufacturer: Intel(R) Corporation
	ID: E9 06 08 00 FF FB EB BF
	Signature: Type 0, Family 6, Model 142, Stepping 9
	Flags:
		FPU (Floating-point unit on-chip)
		VME (Virtual mode extension)
		DE (Debugging extension)
		PSE (Page size extension)
		TSC (Time stamp counter)
		MSR (Model specific registers)
		PAE (Physical address extension)
		MCE (Machine check exception)
		CX8 (CMPXCHG8 instruction supported)
		APIC (On-chip APIC hardware supported)
		SEP (Fast system call)
		MTRR (Memory type range registers)
		PGE (Page global enable)
		MCA (Machine check architecture)
		CMOV (Conditional move instruction supported)
		PAT (Page attribute table)
		PSE-36 (36-bit page size extension)
		CLFSH (CLFLUSH instruction supported)
		DS (Debug store)
		ACPI (ACPI supported)
		MMX (MMX technology supported)
		FXSR (FXSAVE and FXSTOR instructions supported)
		SSE (Streaming SIMD extensions)
		SSE2 (Streaming SIMD extensions 2)
		SS (Self-snoop)
		HTT (Multi-threading)
		TM (Thermal monitor supported)
		PBE (Pending break enabled)
	Version: Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz
	Voltage: 1.1 V
	External Clock: 100 MHz
	Max Speed: 8300 MHz
	Current Speed: 3500 MHz
	Status: Populated, Enabled
	Upgrade: Other
	L1 Cache Handle: 0x0017
	L2 Cache Handle: 0x0018
	L3 Cache Handle: 0x0019
	Serial Number: To Be Filled By O.E.M.
	Asset Tag: To Be Filled By O.E.M.
	Part Number: To Be Filled By O.E.M.
	Core Count: 2
	Core Enabled: 2
	Thread Count: 4
	Characteristics:
		64-bit capable
		Multi-Core
		Hardware Thread
		Execute Protection
		Enhanced Virtualization
		Power/Performance Control

Handle 0x001B, DMI type 20, 35 bytes
Memory Device Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x003FFFFFFFF
	Range Size: 16 GB
	Physical Device Handle: 0x0014
	Memory Array Mapped Address Handle: 0x0016
	Partition Row Position: Unknown
	Interleave Position: 1
	Interleaved Data Depth: 1

Handle 0x001C, DMI type 20, 35 bytes
Memory Device Mapped Address
	Starting Address: 0x00400000000
	Ending Address: 0x007FFFFFFFF
	Range Size: 16 GB
	Physical Device Handle: 0x0015
	Memory Array Mapped Address Handle: 0x0016
	Partition Row Position: Unknown
	Interleave Position: 2
	Interleaved Data Depth: 1

Handle 0x001D, DMI type 130, 20 bytes
OEM-specific Type
	Header and Data:
		82 14 1D 00 24 41 4D 54 00 00 00 00 00 A5 AF 02
		C0 00 00 00

Handle 0x001E, DMI type 131, 64 bytes
OEM-specific Type
	Header and Data:
		83 40 1E 00 31 00 00 00 0B 00 00 00 00 00 05 00
		F8 00 58 9D 00 00 00 00 01 00 00 00 05 00 0B 00
		EE 03 05 00 00 00 00 00 FE 00 FF FF 00 00 00 00
		00 00 00 00 22 00 00 00 76 50 72 6F 00 00 00 00

Handle 0x001F, DMI type 221, 26 bytes
OEM-specific Type
	Header and Data:
		DD 1A 1F 00 03 01 00 01 00 02 00 00 02 00 00 00
		00 34 00 03 00 00 05 00 00 00
	Strings:
		Reference Code - CPU
		uCode Version
		TXT ACM version

Handle 0x0020, DMI type 221, 26 bytes
OEM-specific Type
	Header and Data:
		DD 1A 20 00 03 01 00 01 00 02 00 00 02 00 0B 00
		00 05 00 03 04 0B 05 05 EE 03
	Strings:
		Reference Code - ME 11.0
		MEBx version
		ME Firmware Version
		Consumer SKU

Handle 0x0021, DMI type 221, 68 bytes
OEM-specific Type
	Header and Data:
		DD 44 21 00 09 01 00 01 00 02 00 00 02 03 FF FF
		FF FF FF 04 00 FF FF FF 21 00 05 00 FF FF FF 21
		00 06 00 FF FF FF FF FF 07 00 3E 00 00 00 00 08
		00 34 00 00 00 00 09 00 3E 00 00 00 00 0A 00 34
		00 00 00 00
	Strings:
		Reference Code - SKL PCH
		PCH-CRID Status
		Disabled
		PCH-CRID Original Value
		PCH-CRID New Value
		OPROM - RST - RAID
		SKL PCH H Bx Hsio Version
		SKL PCH H Dx Hsio Version
		SKL PCH LP Bx Hsio Version
		SKL PCH LP Cx Hsio Version

Handle 0x0022, DMI type 221, 54 bytes
OEM-specific Type
	Header and Data:
		DD 36 22 00 07 01 00 01 00 02 00 00 02 00 01 00
		02 00 00 03 00 01 00 02 00 00 04 05 FF FF FF FF
		FF 06 00 FF FF FF 02 00 07 00 FF FF FF 02 00 08
		00 FF FF FF FF FF
	Strings:
		Reference Code - SA - System Agent
		Reference Code - MRC
		SA - PCIe Version
		SA-CRID Status
		Disabled
		SA-CRID Original Value
		SA-CRID New Value
		OPROM - VBIOS

Handle 0x0023, DMI type 221, 103 bytes
OEM-specific Type
	Header and Data:
		DD 67 23 00 0E 01 00 00 00 00 00 00 02 00 FF FF
		FF FF FF 03 04 FF FF FF FF FF 05 06 FF FF FF FF
		FF 07 08 FF FF FF FF FF 09 00 00 00 00 00 00 0A
		00 FF FF FF FF 00 0B 00 FF FF 00 00 00 0C 00 00
		09 00 53 10 0D 00 FF FF FF FF FF 0E 00 FF FF FF
		FF FF 0F 00 FF FF FF FF FF 10 11 01 03 03 01 00
		12 00 00 07 03 00 00
	Strings:
		Lan Phy Version
		Sensor Firmware Version
		Debug Mode Status
		Disabled
		Performance Mode Status
		Disabled
		Debug Use USB(Disabled:Serial)
		Disabled
		ICC Overclocking Version
		UNDI Version
		EC FW Version
		GOP Version
		BIOS Guard Version
		Base EC FW Version
		EC-EC Protocol Version
		Royal Park Version
		BP1.3.3.0_RP01
		Platform Version

Handle 0x0024, DMI type 136, 6 bytes
OEM-specific Type
	Header and Data:
		88 06 24 00 00 00

Handle 0x0025, DMI type 14, 20 bytes
Group Associations
	Name: Firmware Version Info
	Items: 5
		0x001F (<OUT OF SPEC>)
		0x0020 (<OUT OF SPEC>)
		0x0021 (<OUT OF SPEC>)
		0x0022 (<OUT OF SPEC>)
		0x0023 (<OUT OF SPEC>)

Handle 0x0026, DMI type 13, 22 bytes
BIOS Language Information
	Language Description Format: Long
	Installable Languages: 1
		en|US|iso8859-1
	Currently Installed Language: en|US|iso8859-1

Handle 0x0027, DMI type 14, 8 bytes
Group Associations
	Name: $MEI
	Items: 1
		0x0000 (<OUT OF SPEC>)

Handle 0x0028, DMI type 219, 81 bytes
OEM-specific Type
	Header and Data:
		DB 51 28 00 01 03 01 55 02 00 A0 06 03 10 80 20
		00 00 00 00 40 08 00 00 00 00 00 00 00 00 00 02
		FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
		FF FF FF FF FF FF FF FF 03 00 00 00 80 00 00 00
		00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
		00
	Strings:
		MEI1
		MEI2
		MEI3

Handle 0x0029, DMI type 127, 4 bytes
End Of Table