解决方案
嵌入式BIOS

congatec embedded BIOS/UEFI

Embedded computer users usually require more than the standard functionality of an office computer. congatec has taken these requirements into account when designing BIOS/UEFI functionalities. Based on our large amount of BIOS and UEFI experience, we have implemented the embedded requirements into our powerful congatec BIOS / UEFI platform

congatec Board Controller

An onboard micro controller fully isolates most of the embedded features, such as system monitoring, multi stage watchdog or the I²C bus, from the x86 core architecture. This results in higher embedded feature performance and higher overall system reliability

Information
     Board Information
   The congatec Board Controller provides a rich data set of manufacturing data and board information: serial number, article number, EAN code, manufacturing and repair date, running timemeter, boot counter and more.
Post Code Redirection
   The BIOS Port 80h outputs can be forwarded to the I2C bus, the SMBus or to the module UART. This allows for better in-system debugging
Setup
     OEM Setup Menu Control
   The feature allows customers to hide or show setup nodes and to change the descriptions at the BIOS setup screens. Full control for the setup screens is provided to the OEM.

OEM BIOS Code
     Allows customers to a “do it yourself” integration of their own legacy code into the BIOS BOOT flow. The congatec embedded BIOS calls OEM code at designated schedules. Possible options are before/after OpROM scan, before setup and before boot. This can be used to initialize custom carrier board hardware, to add PCI/ PCIe OpROMs and boot loaders, to provide Windows SLP string and SLIC tables for OEM activation, to create own HDA codec verb tables or for other OEM customizations.


OEM Verb Table
To initialize carrier board HDA codecs at BIOS level
User Data Memory
congatec modules provide 32 Bytes of non-volatile storage in
the EEPROM and a 64 kByte block in the BIOS flash memory.
This can be used to store critical and important operating data
e.g. system ID, IP address, software key, etc. User Data Memory
can be locked to prevent manipulation.
OEM BIOS Default Settings
   The congatec embedded BIOS allows users to create custom OEM default settings. These settings can be stored as defaults in the flash memory.
UEFI Screenshot Driver
This allows saving the current screen of the BIOS setup to a USB
flash drive. The resulting .png files can be used
for professional system documentation.
BIOS Setup Data Backup
   The BIOS configuration settings are held in flash memory to allow battery-less applications.
Interfaces
     Fast Mode I²C Bus
   The I²C Bus is a simple serial bus interface often used for sensors, converters or data storage in embedded applications. All congatec modules offer a 400 kHz multi-master I²C hardware
Power Loss and Power-up Control
   This feature controls the operation mode after AC power loss and normal power on. Turn on, remain off and last state modes are possible.This feature does not require an installed CMOS battery.
Further congatec BIOS/BC Features
Type based boot device selection, legacy USB support, USB MSD service boot and generic LPC decoding are also supported. Further features include AT mode shutdown configuration (halt, restart), LID & Sleep support and P-Stater eduction. Some platforms also allow to drive any IRQ overSERIRQ at the GPIO interface.
ACPI Battery Management
   The congatec ACPI BIOS and Board Controller are designed to support a CMB (Control Method Battery) sub-system. It’s possible to implement customized battery solutions by following the congatec CMB design guide. The solution also supports the commonly used Smart Battery Chargers and solutions with only a battery implemented.
Monitoring
     Multi Stage Watchdog Timer
   All congatec modules are equipped with a multi stage watchdog timer supporting different events such as ACPI event, NMI, hardware reset or power button. It can either assert a single event and/or any combination of these events.
Hardware Health Monitoring
   The congatec BIOS and board controller have routines implemented to monitor critical components implemented. This allows for extensive fan control and standard temperature sensors for CPU, module and voltage monitoring. The flexible sensor/actuator assignment allows for easy customization.
Post Watchdog Timer
   This feature allows the monitoring of the BIOS POST process. Starts at system power-up and triggers a hardware reset if  adjustable timeout (256 ms to 4.5 h) is exceeded before the operating system is started.
 
Display
     Display Auto-detection
   Automatic detection and configuration of an attached flat panel is provided via EPI. EPI is an open standard for easy and direct control of all digital flat panel displays with maximum interchangeability
LVDS Backlight Control
   The backlight intensity can be set in BIOS setup or modified during run time by using the CGOS API and ACPI methods from the operating systems. External DACs and potentiometers are supported. Connections are supported utilizing the I2C or PWM signals.
Security
     Measured Boot with TPM2.0
   Full TPM chip support is provided by the BIOS to support features like Bitlocker and Measured Boot.
Secure Boot with OEM Platform Key
   UEFI Secure Boot is about making sure only properly signed and verified images are executed. The main overall reason for UEFI Secure Boot is to prevent any unauthorized software from being loaded in the pre-boot space. The congatec embedded BIOS allows to integrate OEM Platform Keys establishing a trust relationship between the platform owner and the platform firmware.
BIOS write and update protection
   Both of these functions are available once the BIOS Password has been set in the BIOS Setup. When enabled, the BIOS cannot be updated or modified, BIOS write and update protection can be temporarily disabled with the congatec System Utility  (CGUTIL) (requires BIOS Password). The congatec BIOS  password is SHA256 encrypted.
OS Support
     32/64 Bit Uniform OS API
   The congatec embedded BIOS Features are accessible through the uniform APIs EAPI (a PICMG® definition) and and the congatec proprietary CGOS API interface.
Optimizations for Real Time Operation
   The congatec BIOS includes features to optimize the module behavior for best real time operation. CPU and GPU clocks can be fixed and turbo modes / SpeedStep / C-states can be disabled. Further options include PCIe/DMI ASPM disable, Passive cooling disable and support for exclusive IRQ.
OEM SMBIOS/DMI Data
   Allows customers to update several SMBIOS strings. This allows for DMI table content control by the OEM customer directly. No 3rd party tools are required.
Board Support Packages
   congatec offers advanced BSPs, which include both the latest tested drivers from silicon vendors and the congatec specific drivers for accessing all of our additional embedded BIOS and module features.
OEM SMBIOS/DMI Data
   Allows customers to update several SMBIOS strings. This allows for DMI table content control by the OEM customer directly. No 3rd party tools are required.
Board Support Packages
   congatec offers advanced BSPs, which include both the latest tested drivers from silicon vendors and the congatec specific drivers for accessing all of our additional embedded BIOS and module features.
Optimized Power Management
   ACPI Power Management and System Configuration are supported by the congatec BIOS/UEFI according to the ACPI specification.
congatec System Utility
   All embedded BIOS features are accessible through the use of a congatec utility. This includes all manufacturing and statistical information; e.g. serial number, running hours, boot counter etc. BIOS default settings, bootlogo and flat panel configurations can easily be programmed using this flexible and powerful tool.
OEM UEFI DXE Driver / Bootloader
   This feature allows customers to integrate their own UEFI  DXE driver and bootloaders. The built-in CGOS DXE driver  allows for CGOS support (for example to use the I2C bus  or initialize the watchdog) in these OEM DXE drivers.
 

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