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一种轻量级Bootloader(LWBL)的设计与实现

发布时间:2018-12-14 00:08
【摘要】:传统的单片机基本上已经被低端的32位微控制器取代,目前,在这些比较低端的嵌入式平台上,还没有合适的Bootloader可以使用。相对于单片机来说,32位微控制器的计算性能和片内资源已经得到了很大的提升。随着应用的越趋复杂,这些低端嵌入式平台对Bootloader的需求也越来越迫切。本论文拟针对低端嵌入式平台,研究设计一种轻量级的Bootloader(LWBL,下文统一用此简称)。这种Bootloader只需要很少的系统资源就可以运行。它可以提供多种方式的镜像下载功能,给嵌入式产品的开发和维护带来很大的灵活性和便利性。它还具备了安全可靠的更新机制,能够保证固件的可靠史新,较大地提升了嵌入式软件更新过程的可靠性。尤其能够有效地防止嵌入式系统固件更新失败后,系统无法启动的情况,能有效地降低嵌入式软件的开发和维护成本,将具有较高的应用价值。此外,此LWBL中还设计了比较严格的嵌入式软件保护机制,通过固件加壳、结合芯片ID的固件认证等机制,能够保证嵌入式产品的技术不会被轻易窃取,保护了嵌入式开发人员的劳动成果。
[Abstract]:The traditional microcontroller has been replaced by the low-end 32-bit microcontroller. At present, there is no suitable Bootloader to be used on these low-end embedded platforms. Compared with single-chip computer, 32-bit microcontroller's computing performance and inside-chip resources have been greatly improved. With the increasing complexity of applications, the demand for Bootloader on these low-end embedded platforms is becoming more and more urgent. In this paper, a lightweight Bootloader (LWBL, is designed for low-end embedded platform. This Bootloader requires very little system resources to run. It can provide a variety of image download functions, and bring great flexibility and convenience to the development and maintenance of embedded products. It also has a secure and reliable update mechanism, which can guarantee the reliability of firmware and improve the reliability of embedded software update process. In particular, it can effectively prevent the failure of firmware update of embedded system, the system can not start, can effectively reduce the development and maintenance costs of embedded software, and will have a higher application value. In addition, the LWBL also designed a more stringent embedded software protection mechanism, through firmware shell, combined with the firmware authentication mechanism of chip ID, it can ensure that the embedded product technology will not be easily stolen. Protects the labor results of embedded developers.
【学位授予单位】:华东师范大学
【学位级别】:硕士
【学位授予年份】:2012
【分类号】:TP368.1

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