UEFI and BIOS (unified extensible firmware interface and basic input output system) rapidly and safely starting method capable of being dynamically adjusted as requirements

Abstract

The invention discloses a UEFI and BIOS (unified extensible firmware interface and basic input output system) rapidly and safely starting method capable of being dynamically adjusted as requirements, belonging to the technical field of rapid starting of the UEFI and BIOS. The rapidly and safely starting method is characterized by being an existing rapid and safe method suitable for a system platform comprising a portable terminal or embedded equipment. The rapidly and safely starting method comprises the following stages: platform main control computer initialization, user signature authentication, initial code detection, environment initialization, drive program loading for setting equipment, buses and services, operation system guide program or operating system inner core loading, operation system application program running and judgment that whether the application program completely operates or not. With the adoption of the rapidly and safely starting method, not only is the efficiency of the system platform improved, but also the safety of an executive program of a CPU (central processing unit) is guaranteed.

Description

technical field [0001] The invention relates to a quick start method used in UEFI BIOS (Unified Extensible Firmware Interface Basic Input Output System), especially a safe and reliable method. Background technique [0002] In order to be modularized, UEFI BIOS usually divides the boot process into multiple stages, such as figure 1 shown. There are seven stages from platform startup to platform initialization, to operating system startup, and finally to shutdown UEFI BIOS. Each stage is implemented by different modules, and there are well-defined interfaces between each stage. There are four stages before the operating system starts: initial code detection SEC, environment initialization PEI, driver execution environment DXE, and boot device selection BDS. After the operating system is started, there are three stages: the system loads TSL, the system runs RT, and the AL ends. [0003] The existing UEFI BIOS will detect and initialize all devices and load all services when ...

AI Technical Summary

Problems solved by technology

[0004] 1) The startup time is too long: the existing UEFI BIOS is oriented to all computing devices such as terminals, servers, and embedded devices, but for portable terminals and embedded devices, a considerable part of drivers and services are redundant. Devices usually require the platform to start quickly, so this type of demand cannot be met;

[0005] 2) Re-enumerate the hardware every time you start: the existing UEFI BIOS will enumerate the device every time it starts, but since the hardware of the computing platform usually does not change, the enumeration work is obviously redundant of;

[0006] 3) The security is not strong: every time the existing UEFI BIOS is started, the CPU will directly read the firmware image in the FLASH and start executing it in stages, without considering the security of the firmware image itself

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