WinSystems SBC35-427 Owner's manual

WinSystems, Inc. | 715 Stadium Drive, Arlington, Texas 76011 | 817-274-7553 | [email protected] | www.winsystems.com
SBC35-427
Supplemental BIOS Manual

SBC35-427
v1.0 www.winsystems.com Page 2
Revision History
Copyright and Trademarks
Copyright 2019, WINSYSTEMS, Inc.
No part of this document may be copied or reproduced in any form or by
any means without the prior written consent of WINSYSTEMS, Inc. The
information in the document is subject to change without notice. The
information furnished by WINSYSTEMS, Inc. in this publication is believed
to be accurate and reliable. However, WINSYSTEMS, Inc. makes no
warranty, express, statutory, implied or by description, regarding the
information set forth herein or regarding the freedom of the described
devices from patent infringement. WINSYSTEMS, Inc. makes no warranty
of merchantability or fitness for any purpose. WINSYSTEMS, Inc. assumes
no responsibility for any errors that may appear in this document.
Trademark Acknowledgments
WINSYSTEMS is a registered trademark of WINSYSTEMS, Inc.
Intel and Intel Atom are trademarks of Intel Corporation or its subsidiaries
in the U.S. and/or other countries.
All other marks are the property of their respective companies.
BIOS Version Last Updated
Date Brief Description of Change
42719177 1/1/19 Initial release

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1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2 Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2 BIOS Update with UEFI Shell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.2 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3 Embedded Controller (EC) Update with UEFI Shell. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4 BIOS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Entering the BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.2 Main . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.3.1 CPU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3.2 Chipset Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3.3 Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3.4 Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3.5 SATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3.6 USB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3.7 Power Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3.8 Thermal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3.9 TPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.3.10 Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3.11 Embedded Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3.12 HD-Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3.13 Modular I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.14 M.2 E-Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.15 PCIe Mini-Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3.16 Console Redirection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3.17 Debug. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3.18 Intel I210 Gigabit Network Connection 1 & 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.4 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.4.1 Setup Administrator Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4.2 User Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4.3 HDD Security Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4.4 Secure Boot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.5 Boot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

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4.6 Save & Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4.6.1 Boot Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.6.2 Save Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.6.3 Default Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 BIOS Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.1 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5.2 Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
6 Software Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.1 Software Design Specification: UEFI Operating System Support . . . . . . . . . . . . . . . . . . . . . .27
6.2 Software Design Specification: Legacy Operating System Support . . . . . . . . . . . . . . . . . . . .27
6.3 Software Design Specification: Boot Device Configuration . . . . . . . . . . . . . . . . . . . . . . . . . .27
6.4 Software Design Specification: BIOS Update Mechanisms. . . . . . . . . . . . . . . . . . . . . . . . . . .28
6.5 8.1.5 Software Design Requirements: BIOS Components . . . . . . . . . . . . . . . . . . . . . . . . . . .28
7 AMI Post Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.1 POST Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
8 Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

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1. Introduction
The BIOS used in this design is a custom version of the AMI Aptio V x86
BIOS.
1.1 References
The following Intel Atom E3900 BIOS specification documents can assist
developers in the creation of firmware for the Intel Atom E3900:
• Intel Atom E3900 Platform Intel Architecture Firmware Specification
(Volume 1 of 2), Document Number 559810
• Intel Atom E3900 Platform Intel Architecture Firmware Specification
(Volume 2 of 2), Document Number 559811
• Intel Dynamic Platform and Thermal Framework (Intel DPTF) v8.x 201 -
Rev 1.1, Document Number 556073
1.2 Glossary
•Advanced Configuration and Power Interface (ACPI): Specification
that establishes industry standard interfaces enabling OS directed con-
figuration, power management and thermal management of mobile,
desktop, and server platforms.
•Dynamic Video Memory Technology (DVMT): Allows dynamic alloca-
tion of system memory for use as video memory to ensure the most
efficient use of available resources in order to maximize 2D/3D graph-
ics performance.
•Graphics Processing Unit (GPU): Specialized electronic circuit
designed to rapidly manipulate and alter memory to accelerate the
creation of images in a frame buffer.
•Integrated Graphics Device (IGD): Graphics processor integrated into
the Intel Atom E3900 SOC. The IGD in the Atom E3900 SOC is an Intel
9th Generation GPU, also called Gen9 GPU.
•Unified Extensible Firmware Interface (UEFI): Specification that
defines a software interface between an operating system and plat-
form firmware. UEFI replaces the basic input/output system (BIOS)
firmware interface
2. BIOS Update with UEFI Shell
2.1 Scope
The Unified Extensible Firmware Interface (EFI or UEFI) is a new model for
the interface between operating systems and firmware. It provides a

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standard environment for booting an operating system and running pre-
boot applications.
An optional feature of a UEFI implementation is the ability to boot the
system to a built-in shell. The UEFI shell provides a command prompt and
a rich set of commands that extend and enhance the capability of the UEFI
BIOS.
This section describes the process for updating the SBC35-427 BIOS
firmware image using the built-in UEFI shell.
2.2 Process
1. Insert a USB flash drive containing the BIOS update program into a
USB socket on the SBC35-427 platform.
2. Turn on the SBC35-427 and press ESC or DEL key during the boot
process, which starts the BIOS setup utility.
3. In the BIOS setup utility, use the cursor keys to highlight the Save &
Exit menu option.
4. Use the cursor keys to select UEFI: Built-In EFI Shell from the list of
boot devices displayed under the Boot Override section.
5. Press Enter.
The SBC35-427 executes the built-in UEFI shell, and displays a list of
attached storage devices. The USB flash drive shows up in the list;
depending on other boot devices attached, it may be listed as fs0, fs1,
etc.
6. From the UEFI shell command prompt, enter the following command
where Nis the number of the fs device representing the USB flash
drive:
fsN:
The shell prompt changes to indicate that device fsN is now the active
storage device. Example: fs1:
7. Execute the following command:
ls
The output of the ls command is similar to the display listing available
with the Linux or MS-DOS list directory command. If the correct
storage device was selected above, the ls command should show the
BIOS update program in the directory
8. Assuming the BIOS update program is named Update.efi, enter the
following command at the shell command prompt:
Update.efi
The BIOS update program begins executing.

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9. When the update program completes, power cycle the platform to
force the new BIOS image to load and execute.
10. Verify that the BIOS update was successful by comparing the displayed
BIOS version with the version specified in the BIOS update notification.
3. Embedded Controller (EC) Update with UEFI Shell
This section describes the process for updating the SBC35-427 embedded
controller (EC) image using the built-in Unified Extensible Firmware
Interface (EFI or UEFI for short) shell.
3.1 Process
1. Insert a USB flash drive containing the EC update program into a USB
socket on the SBC35-427 platform.
2. Turn on the SBC35-427 and press the ESC or DEL key during the boot
process, which starts the BIOS setup utility.
3. In the BIOS setup utility, use the cursor keys to highlight the Save &
Exit menu option.
4. 4. Use the cursor keys to select UEFI: Built-In EFI Shell from the list of
boot devices displayed under the Boot Override section.
5. 5. Press Enter.
The SBC35-427 executes the built-in UEFI shell, and displays a list of
attached storage devices. The USB flash drive shows up in the list;
depending on other boot devices attached, it may be listed as fs0, fs1,
etc.
6. 6. From the UEFI shell command prompt, enter the following
command where Nis the number of the fs device representing the USB
flash drive:
fsN:
The shell prompt changes to indicate that device fsN is now the active
storage device. Example: fs1:
7. Execute the following command:
ls
The output of the ls command is similar to the display listing available
with the Linux or MS-DOS list directory command. If the correct
storage device was selected above, the ls command should show the
EC update program in the directory listing obtained with the ls
command.

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8. Assuming the EC update program is named Update.efi, enter the
following command at the shell command prompt:
Update.efi
The EC update program begins executing.
9. When the update program completes, power cycle the platform to
force the new EC image to load and execute.
10. Verify that the EC update was successful by comparing the displayed
EC version in the BIOS with the version specified in the EC update
notification.
4. BIOS Settings
This section provides details on the system parameters that are managed
by the BIOS. Details on the possible parameter values are included.
4.1 Entering the BIOS
Enter the BIOS by pressing DEL or ESC during POST. If you are running a
Windows 10 operating system and you cannot enter the BIOS during POST
by pressing either DEL or ESC, then follow the instructions below.
1. Press the Windows key on your keyboard and type “recovery options”
into the search box.
2. Press Enter to open the Windows Recovery settings.
3. Under Advanced startup, click Restart now.
The SBC35-427 restarts and boots into the UEFI menu
4. Click the BIOS button to enter the BIOS.
4.2 Main
The Main page of the BIOS displays general information related to the
current BIOS build, including the BIOS and embedded controller firmware
revisions. Information related to the system memory is also displayed on
this page.
System time and date are configurable on the main BIOS page. An
external battery is required to retain time and date if power is removed.
The following BIOS build information is available on the Main BIOS page.

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4.3 Configuration
The BIOS Configuration page serves as the top-level BIOS page for
configuring peripherals and devices present on the SBC35-427 platform.
The configuration subpages include pages for the CPU, network interfaces,
serial ports, USB ports, SATA, and other features. The settings for each
configuration subpage are described in the device sections.

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4.3.1 CPU
View a summary of the CPU features plus the ability to control vital CPU
features including Power Management.
Section Page Section Page
CPU page 10 Serial Ports page 17
Chipset page 11 Embedded Controller page 18
Network page 12 HD-Audio page 18
Video page 12 Modular I/O page 19
SATA page 13 M.2 E-Key page 19
USB page 14 PCIe Mini-Card page 20
Power Control page 14 Console Redirection page 20
Thermal page 15 Debug page 21
TPM page 16 Intel I210 Gigabit Network
Connection #1 and #2
page 21
Feature Description Choices Default
Socket 0 CPU
Information
CPU values specific to the processor in use.
Active Processor
Cores
Number of cores to enable in each processor package. If disabled, all cores
are enabled.
Intel Virtualization
Technology
Intel VT provides hardware assist to
virtualization software, reducing its size, cost,
and complexity. Special attention is also given
to reduce the virtualization overheads
occurring in cache, I/O, and memory.
Enable,
Disable
Enable
Bi-directional
PROCHOT
When a processor thermal sensor trips (any
core), the PROCHOT# is driven and the
processor is throttled. If bi-direction is
enabled, external agents can drive
PROCHOT# to throttle the processor.
Enable,
Disable
Enable
Thermal Monitor Uses the thermal control circuit to regulate
the processor temperature. Allows the
processor to maintain a safe operating
temperature without the need for special
software drivers or interrupt handling
routines.
Enable,
Disable
Enable
Monitor Mwait Allows for efficient partitioning and
unpartitioning of shared resources among
logical processors. MONITOR sets up an
effective address range monitored for write-
to-memory activities; MWAIT places the
processor in an optimized state until a write
to the monitored address range.
Enable,
Disable, Auto
Auto
DTS Two on-die digital thermal sensors can be
read via an internal register of the processor.
The DTS is the preferred method of reading
the processor die temperature because they
are located much closer to the hottest
portions of the die.
Enable,
Disable
Disable