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UNIONDONG committed Nov 18, 2023
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4 changes: 2 additions & 2 deletions content/post/Uboot开发详解/一、uboot基础了解.md
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---
date: '2023-11-17T20:50:32+08:00'
title: '一、uboot基础了解'
description: ""
description: "U-Boot,全称 Universal Boot Loader,是遵循GPL条款的从FADSROM、8xxROM、PPCBOOT逐步发展演化而来的 开放源码项目。U-boot,是一个主要用于嵌入式系统的引导加载程序,可以支持多种不同的计算机系统结构,其主要作用为:==引导系统的启动!==目前,U-Boot不仅支持Linux系统的引导,还支持NetBSD, VxWorks, QNX, RTEMS, ARTOS, LynxOS, android等多种嵌入式操作系统!"
author:     "Donge"
image: ""
image: "img/post-bg-halting.jpg"
published: true
showtoc: false
tags:
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date: '2023-11-17T22:11:57+08:00'
title: '二、uboot启动流程分析'
description: ""
description: "同大多数的Bootloader一样,uboot的启动过程也分为BL1、BL2两个阶段,分别对应着SPL和Uboot。SPL(BL1阶段):负责开发板的基础配置和设备初始化,并且搬运Uboot到内存中,由汇编代码和少量的C语言实现.Uboot(BL2阶段):主要负责初始化外部设备,引导Kernel启动,由纯C语言实现。"
author:     "Donge"
image: ""
image: "img/post-bg-ios9-web.jpg"
tags:
- Uboot开发详解
categories: ["Tech"]
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