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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 |
| 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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