【正文】 ating System Kernel Based on S3C2440 Abstract Embedded Linux is a embedded operating system based on Linux, which can be applied to a variety of hardware platforms, with full memory access control, supporting for a lot of hardware features. It can adapt to realtime requirements on the field of industrial control, it is widely used in mobile phones, personal digital assistants, media players, consumer electronics, and aerospace and other fields. The kernel of the Linux operating system is studied based on the GT2440 in the topic, the GT2440 uses high frequency and highperformance SamsungS3C2440A processor as the master chip, whose interface is rich in resources and versatile. Primarily the transplanting of NandFlash drive,LCD driver,CS8900A LAN Driver,UDA1341 sound card driver, touch screen driver, SD card driver, RTC driver and USB driver are finished. Finally, the kernel file transplanted is downloaded to the GT2440 development board for testing, and the test results verify the correctness of the kernel transplantation. KEY WORD: Embedded system； S3C2440； Linux kernel porting； Drive transplant III 目錄 第一章 前言 ...................................................................................................................................... 1 嵌入式系統(tǒng)簡(jiǎn)介 ....................................................................................................................... 1 嵌入式操作系統(tǒng)概述 ................................................................................................................ 2 章節(jié)安排 ................................................................................................................................. 2 第二章 開發(fā)環(huán)境搭建 ........................................................................................................................ 3 硬件平臺(tái) ................................................................................................................................. 3 交叉開發(fā)環(huán)境 .......................................................................................................................... 6 交叉開發(fā)環(huán)境簡(jiǎn)介 ............................................................................................................. 6 交叉編譯環(huán)境的建立 ......................................................................................................... 6 第三章 嵌入式 Linux內(nèi)核移植實(shí)現(xiàn) ................................................................................................... 8 嵌入式 Linux內(nèi)核概述 ............................................................................................................. 8 嵌入式 Linux內(nèi)核移植實(shí)現(xiàn) .................................................................................................... 10 移植準(zhǔn)備工作 .................................................................................................................. 10 CS8900A 網(wǎng)卡驅(qū)動(dòng)移植 .................................................................................................... 11 UDA1341 聲卡驅(qū)動(dòng)移植 ................................................................................................... 15 觸摸屏驅(qū)動(dòng)移植 .............................................................................................................. 16 Nand Flash 驅(qū)動(dòng)移植 ......................................................................................................... 18 yaffs2 文件系統(tǒng)的支持 ...................................................................................................... 20 LCD 驅(qū)動(dòng)的移植 .............................................................................................................. 21 RTC 驅(qū)動(dòng)移植 .................................................................................................................. 22 USB 驅(qū)動(dòng)移植 .................................................................................................................. 22 第四章 系統(tǒng)的功能測(cè)試 .................................................................................................................. 24 測(cè)試準(zhǔn)備 ............................................................................................................................... 24 CS8900A 網(wǎng)卡測(cè)試 ................................................................................................................. 24 UDA1341 測(cè)試 ........................................................................................................................ 24 觸摸屏測(cè)試 ............................................................................................................................ 25 LCD 測(cè)試 ............................................................................................................................... 25 RTC實(shí)時(shí)時(shí)鐘測(cè)試 ................................................................................................................. 26 USB 驅(qū)動(dòng)測(cè)試 ........................................................................................................................ 26 IV 第五章 總結(jié) .................................................................................................................................... 28 參考文獻(xiàn) ......................................................................................................................................... 29 致 謝 ........................................................................................................................................... 30 1 第一章 前言 嵌入式系統(tǒng)簡(jiǎn)介 根據(jù) IEEE 的定義，嵌入式系統(tǒng)是控制、監(jiān)視或者輔助裝置、機(jī)器和設(shè)備運(yùn)行的裝置。 嵌入式系統(tǒng) 有以下一些 特點(diǎn) ： 。嵌入式系統(tǒng)的個(gè)性化很強(qiáng)，其中的軟件 4 種嵌入式操作系統(tǒng)的調(diào)度機(jī)制 和硬件的結(jié)合非常緊密，一般要針對(duì)硬件進(jìn)行系統(tǒng)的移植，即使在同一品牌、同一系列的產(chǎn)品中也需要根據(jù)系統(tǒng)硬件的變化和增減不斷進(jìn)行修改。 。 。 EOS 負(fù)責(zé)嵌入系統(tǒng)的全部軟、硬件資源的分配、任務(wù)調(diào)度，控制、協(xié)調(diào)并發(fā)活動(dòng)。 嵌入式 Linux 操作系統(tǒng) 是指對(duì) Linux 經(jīng)過小型化裁剪后，能夠固化在容量只有幾十萬字節(jié)或幾十億字節(jié)的存儲(chǔ)器芯片或單片機(jī)中，應(yīng)用于特定嵌入式