BIOS

The basic input/output system (BIOS) is the most basic software loaded to a computer hardware system. It provides an abstraction layer between the computer hardware and the OS. It is used to perform hardware initialization during the boot process and provide runtime services for the OS and programs. Figure A-3 shows the BIOS position in the system.

The BIOS data is stored on the Serial Peripheral Interface (SPI) flash memory. The BIOS performs a power-on self-test (POST), initializes CPU and memory, checks the I/O and boot device, and finally boots the OS. The BIOS also supports the advanced configuration and power interface (ACPI) and hot swap setting.

The BIOS of this product has independent intellectual property rights and patents, and features customization, abundant out-of-band and in-band configuration functions, and high scalability.

Figure A-3 BIOS in the system

For details, see Huawei Atlas Server BIOS Parameter Reference (Kunpeng 920 Processor).