Operating system kernel booting and loading hardware and method for debugging test

Abstract

The invention discloses an operating system kernel guidance and loading hardware and method oriented to debugging and testing. The method realizes and sets four kinds of mutual backups and adjustable priorities by using the set storage unit, peripheral auxiliary interface and special register. The real-time operating system kernel booting and loading mode, execute one or more of the four real-time operating system kernel booting and loading modes according to the set priority order, until the operating system kernel booting and loading is completed. The debugging test-oriented operating system kernel booting and loading hardware and method of the present invention can assist debugging and verification of the system startup process before the design of the system on a chip is finalized, and can tolerate the abnormal system state caused by the failure of a single way to start the operating system kernel. Moreover, the existing peripheral interfaces of the system-on-chip can be reused, and the additional hardware overhead is small.

Description

technical field [0001] The invention relates to the technical field of an embedded system on a chip, in particular to an operating system kernel guidance and loading hardware and method for debugging and testing. Background technique [0002] In the working process of the embedded microprocessor and the real-time operating system kernel, the boot and loader is the first part of the code executed after the system is powered on and started. One of the functions of the boot program is to be responsible for copying and loading the real-time operating system kernel into the static random-access memory (Static Random-Access Memory, SRAM) space, and jumping to the specified address to start execution according to the initial setting. Whether the booting and loading process of the operating system kernel can be successfully completed directly determines whether the software and hardware system can normally enter the subsequent working state. [0003] At present, the booting and loa...

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Problems solved by technology

[0003] At present, the booting and loading process of the operating system kernel of an embedded System on Chip (SoC) generally depends on a specific-purpose Boot ROM, the startup method is relatively single, and there are relatively high requirements for custom design capabilities and process technology for ASICs. High, there is a lack of system-level backup solutions during design and verification, and there are weak links or even failure risks in system robustness

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