Bootstrap on-line upgrading method

Abstract

The invention provides a method for guiding the online upgrade of programs, which comprises: when a central processing system is powered, through a main bootstrap program in a bootstrap program storage main-use page stored in a bootstrap program storage device, a central processing system is guided to boot; when the main bootstrap program is under the normal circumstances, a non-use bootstrap program in a non-use bootstrap program storage page stored in a programmable device shall be verified; when the non-use bootstrap program is correct, it is judged that whether the non-use bootstrap program needs update, and when the non-use bootstrap program need not to be updated, the central processing system maintains the operation; in addition, when the non-use bootstrap program needs to be updated, the non-use bootstrap program shall be updated, and shall be switched over to reboot the central processing system through the non-use bootstrap program. Therefore, on the basis of a one-chip bootstrap program storage device, the online upgrade of the bootstrap program shall be realized and backspace shall be supported, so as to reduce the frequency of a maintainer to the foreground to replace the bootstrap program storage device, which is convenient for debugging.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, relates to an online upgrade method of a boot program in an embedded system. Background technique [0002] In the embedded central processing system (CPU) of a communication system application board, the program is generally divided into two parts: a boot program and an application program. Wherein, the boot program is solidified in the flash memory (FLASH), and is used to store the boot code of the CPU on the single board, and guide the CPU on the single board to start, initialize and self-check when the board is powered on or reset. After the boot program boots the CPU, it will transfer the application program from the FLASH to the memory, and the single board starts to run the application program. [0003] In order to facilitate maintenance, both the application program and the bootloader have the requirement of online upgrade. In the patent No. CN02131441, a boot pro...

AI Technical Summary

Problems solved by technology

In the patent No. CN02131441, a boot program storage device and its method for ensuring online upgrade are described, but the disadvantage of this technology is that two boot program memories need to be used, which occupies a large space on the single board, which is not conducive to high-speed integrated board

In addition, in the No. CN03137422 patent, a method for bootloader hot upgrade is described. The determination of this technology is to divide the bootloader into a basic boot module and a non-solidified main boot module, and only supports online upgrade of the latter, while The former cannot be upgraded online

Patent No. CN200610002035 also describes an online upgrade technology for bootloaders, but this technology also divides bootloaders into basic bootloaders and upgradeable bootloaders, and only supports online upgrades for upgradeable bootloaders

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