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U-Boot和Linux中文参考指南
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{{DISPLAYTITLE:U-Boot和Linux中文参考指南}} =简述= 这是《嵌入式系统 PowerPC，ARM和MIPS系统的DENX Uboot引导和Linux指南手册》。<br> 该文档介绍了如何配置，构建和使用固件Das U-Boot（通常缩写为 ＂U-Boot＂）以及用于嵌入式PowerPC，ARM和MIPS系统的操作系统 Linux。<br> 本文档版本的重点是在Das U-Boot上。<br> 本文件产生于2020年5月7日-02:52<br> =Introduction= ==Copyright== ==Disclaimer== ==Availability== ==Credits== ==Translations== ==Feedback== ==Conventions== =Embedded Linux Development Kit= ==ELDK Availability== ==ELDK Getting Help== ==Supported Host Systems== ==Supported Target Architectures== ==Installation== ===Product Packaging=== ===Downloading the ELDK=== ===Initial Installation=== ===Installation and Removal of Individual Packages=== ===Removal of the Entire Installation=== ==Working with ELDK== ===Switching Between Multiple Installations=== ==Mounting Target Components via NFS== ===Rebuilding ELDK Components=== ===ELDK Source Distribution=== ===Rebuilding Target Packages=== ===Rebuilding ELDT Packages=== ==ELDK Packages== ===List of ELDT Packages=== ===List of Target Packages=== ==Rebuilding the ELDK from Scratch== ===ELDK Build Process Overview=== ===Setting Up ELDK Build Environment=== ===build.sh Usage=== ===Format of the cpkgs.lst and tpkgs.lst Files=== ==Notes for Solaris 2.x Host Environment== =System Setup= ==Serial Console Access== ==Configuring the "cu" command== ==Configuring the "kermit" command== ==Using the "minicom" program== ==Permission Denied Problems== ==Configuration of a TFTP Server== ==Configuration of a BOOTP / DHCP Server== ==Configuring a NFS Server== =Das U-Boot= ==当前版本== Das U-Boot （或只是“U-Boot的”的简称）是开源固件的嵌入式Power架构 ®，ARM，MIPS，x86和其他处理器。U-Boot项目由DENX托管，您还可以在其中找到项目主页: http://www.denx.de/wiki/U-Boot/ <br> 可以从DENX "git "存储库中检索当前版本的U-Boot源代码。<br> 您可以在 http://git.denx.de/ 浏览 "git"存储库。<br> 可以通过git，HTTP和rsync协议访问这些树。例如，您可以使用以下命令之一来创建其中一个源树的本地克隆：<br> git clone git://git.denx.de/u-boot.git u-boot/ git clone http://git.denx.de/u-boot.git u-boot/ git clone rsync://git.denx.de/u-boot.git u-boot/ 也可以通过FTP获得U-Boot的正式版本 。压缩tar档案可以从目录 ftp://ftp.denx.de/pub/u-boot/ 下载。 ==解压源代码== 如果您使用GIT来获取U-Boot源的副本，则可以跳过此下一步，因为您已经具有解压缩的目录树。如果从DENX FTP服务器下载了压缩的tarball，则可以使用如下命令解压缩它: $ cd /opt/eldk/usr/src $ wget ftp://ftp.denx.de/pub/u-boot/u-boot-1.3.2.tar.bz2 $ rm -f u-boot $ bunzip2 < u-boot-1.3.2.tar.bz2 | tar xf - $ ln -s u-boot-1.3.2 u-boot $ cd u-boot ==配置== 使用U-Boot源代码切换到目录后，应确保没有任何先前配置留下的构建结果: $ make distclean 以下命令为canyonlands板配置U-Boot： $ make canyonlands_config 最后，我们可以编译工具和U-Boot本身: $ make all 默认情况下，构建是在本地执行的，并且对象保存在源目录中。可以使用以下两种方法之一来更改此行为并将U-Boot构建到某个外部目录： *1.在make命令行调用中添加 O= make O=/tmp/build distclean make O=/tmp/build canyonlands_config make O=/tmp/build all :请注意，如果使用 O=output/dir 选项，则必须将其用于所有的make调用。 *2.将环境变量设置BUILD_DIR为指向所需位置： export BUILD_DIR=/tmp/build make distclean make canyonlands_config make all ==Installation== ===Before You Begin=== ====Installation Requirements==== ====Board Identification Data==== ===Installation Using a BDM/JTAG Debugger=== ===Installation using U-Boot=== ==Tool Installation== ==Initialization== ==Initial Steps== ==The First Power-On== ==U-Boot Command Line Interface== === Information Commands=== ====bdinfo - print Board Info structure==== ====coninfo - print console devices and informations==== ====flinfo - print FLASH memory information==== ====iminfo - print header information for application image==== ====help - print online help==== ===Memory Commands=== ====base - print or set address offset==== ====crc32 - checksum calculation==== ====cmp - memory compare==== ====cp - memory copy==== ====md - memory display==== ====mm - memory modify (auto-incrementing)==== ====mtest - simple RAM test==== ====mw - memory write (fill)==== ====nm - memory modify (constant address)==== ==== loop - infinite loop on address range==== ===Flash Memory Commands=== ====cp - memory copy==== ====flinfo - print FLASH memory information==== ====erase - erase FLASH memory==== ====protect - enable or disable FLASH write protection==== ====mtdparts - define a Linux compatible MTD partition scheme===== ===Execution Control Commands=== ====source - run script from memory==== ====bootm - boot application image from memory==== ====go - start application at address 'addr'==== ===Download Commands=== ====bootp - boot image via network using BOOTP/TFTP protocol==== ====dhcp - invoke DHCP client to obtain IP/boot params==== ====loadb - load binary file over serial line (kermit mode)==== ====loads - load S-Record file over serial line==== ====rarpboot- boot image via network using RARP/TFTP protocol==== ====tftpboot- boot image via network using TFTP protocol==== ===Environment Variables Commands=== ====printenv- print environment variables==== ====saveenv - save environment variables to persistent storage==== ====setenv - set environment variables==== ====run - run commands in an environment variable==== ====bootd - boot default, i.e., run 'bootcmd'==== ===Flattened Device Tree support=== ====fdt addr - select FDT to work on==== ====fdt list - print one level==== ====fdt print - recursive print==== ====fdt mknode - create new nodes==== ====fdt set - set node properties==== ====fdt rm - remove nodes or properties==== ====fdt move - move FDT blob to new address==== ====fdt chosen - fixup dynamic info==== === Special Commands=== ====i2c - I2C sub-system==== === Storage devices=== === Miscellaneous Commands=== ====echo - echo args to console==== ====reset - Perform RESET of the CPU==== ====sleep - delay execution for some time==== ====version - print monitor version==== ====? - alias for 'help'==== ==U-Boot Environment Variables== ==U-Boot Scripting Capabilities== ==U-Boot Standalone Applications== ==="Hello World" Demo=== ===Timer Demo=== ===Processor cache considerations=== ===Running on core other than core 0=== ==U-Boot Image Formats== ==U-Boot Advanced Features== ===Boot Count Limit=== = Embedded Linux Configuration= ==Download and Unpack the Linux Kernel Sources== ==Kernel Configuration and Compilation== ==Installation== = Booting Embedded Linux= ==Introduction== ==Flattened Device Tree Blob== ==Passing Kernel Arguments== ==Boot Arguments Unleashed== ==Networked Operation with Root Filesystem over NFS== === Bootlog of tftp'd Linux kernel with Root Filesystem over NFS=== ==Boot from Flash Memory== ==Standalone Operation with Ramdisk Image== =Building and Using Modules= =Advanced Topics= ==Flash Filesystems== ===Memory Technology Devices=== ===Journalling Flash File System=== ===Second Version of JFFS=== ===Compressed ROM Filesystem=== == The TMPFS Virtual Memory Filesystem== ===Mount Parameters=== ===Kernel Support for tmpfs=== ===Usage of tmpfs in Embedded Systems=== == Adding Swap Space== == Splash Screen Support in Linux== == Root File System: Design and Building=== ===Root File System on a Ramdisk=== ===Root File System on a JFFS2 File System=== ===Root File System on a cramfs File System=== ===Root File System on a Read-Only ext2 File System=== ===Root File System on a Flash Card=== ===Root File System in a Read-Only File in a FAT File System=== == Root File System Selection== == Overlay File Systems== == The Persistent RAM File system (PRAMFS)== ===Mount Parameters=== ===Example=== =Debugging= == Debugging of U-Boot== === Debugging of U-Boot Before Relocation=== === Debugging of U-Boot After Relocation=== == Linux Kernel Debugging== === Linux Kernel and Statically Linked Device Drivers=== === Dynamically Loaded Device Drivers (Modules)=== === GDB Macros to Simplify Module Loading=== == GDB Startup File and Utility Scripts== == Tips and Tricks== == Application Debugging== === Local Debugging=== === Remote Debugging=== == Debugging with Graphical User Interfaces== = Simple Embedded Linux Framework= = Books, Mailing Lists, Links, etc.= == Application Notes== == Further Reading== ===Upstreaming=== ===License Issues=== ===Linux kernel=== ===General Linux / Unix programming=== ===Network Programming=== ===C++ programming=== ===Java programming=== ===Internationalization And Character Sets=== ===ARM Architecture Programming=== === Power Architecture® Programming=== === Embedded Topics=== == Mailing Lists== == Links== == Tools== = Appendix= ==Flat Device Tree== ==Flat Device Tree== ==BDI2000 Configuration file== = FAQ - Frequently Asked Questions= == ELDK== ===ELDK Installation under FreeBSD=== ===ELDK Installation Hangs=== ===.gvfs: Permission Denied=== ===Installation on Local Harddisk=== ===System Include Files Missing=== ===patch: command not found=== ===ELDK Include Files Missing=== ===Using the ELDK on a 64 bit platform=== ===GDB Problems with BDI2000/BDI3000 on e500 Cores=== === How can I check if Floating Point support is working?=== === ELDK 2.x Installation Aborts=== === Enable SSH Access=== == U-Boot== ===Can U-Boot be configured such that it can be started in RAM?=== ===Relocation cannot be done when using -mrelocatable=== ===Source object has EABI version 4, but target has EABI version 0=== ===U-Boot crashes after relocation to RAM=== ===Warning - bad CRC, using default environment=== ===Net: No ethernet found=== ===Wrong debug symbols after relocation=== ===Decoding U-Boot Crash Dumps=== ===Porting Problem: cannot move location counter backwards=== === U-Boot Doesn't Run after Upgrading my Compiler=== === How Can I Reduce The Image Size?=== === Erasing Flash Fails=== === Ethernet Does Not Work=== === Where Can I Get a Valid MAC Address from?=== === Why do I get TFTP timeouts?=== === Why is my Ethernet operation not reliable?=== === How the Command Line Parsing Works=== ====Old, simple command line parser==== ====Hush shell==== ====Hush shell scripts==== ====General rules==== === How can I load and uncompress a compressed image=== === How can I create an uImage from a ELF file=== === My standalone program does not work=== === Linux hangs after uncompressing the kernel=== === How can I implement automatic software updates?=== == Linux== ===Linux crashes randomly=== ===Linux crashes when uncompressing the kernel=== ===Linux Post Mortem Analysis=== ===Linux kernel register usage=== ===Linux Kernel Ignores my bootargs=== ===Cannot configure Root Filesystem over NFS=== ===Linux Kernel Panics because "init" process dies=== ===Unable to open an initial console=== ===System hangs when entering User Space (ARM)=== === Mounting a Filesystem over NFS hangs forever=== === Ethernet does not work in Linux=== === Loopback interface does not work=== === Linux kernel messages are not printed on the console=== === Linux ignores input when using the framebuffer driver=== === How to switch off the screen saver and the blinking cursor?=== === BogoMIPS Value too low=== === Linux Kernel crashes when using a ramdisk image=== === Ramdisk Greater than 4 MB Causes Problems=== === Combining a Kernel and a Ramdisk into a Multi-File Image=== === Adding Files to Ramdisk is Non Persistent=== === Kernel Configuration for PCMCIA=== === Configure Linux for PCMCIA Cards using the Card Services package=== === Configure Linux for PCMCIA Cards without the Card Services package=== ====Using a MacOS Partition Table==== ====Using a MS-DOS Partition Table==== === Boot-Time Configuration of MTD Partitions=== === Use NTP to synchronize system time against RTC=== === Configure Linux for XIP (Execution In Place)=== ====XIP Kernel==== ====Cramfs Filesystem==== ====Hints and Notes==== ====Space requirements and RAM saving, an example=== === Use SCC UART with Hardware Handshake=== === How can I access U-Boot environment variables in Linux?=== === The =appWeb= server hangs *OR* /dev/random hangs=== === Swapping over NFS=== === Using NFSv3 for NFS Root Filesystem=== === Using and Configuring the SocketCAN Driver=== === Telnet / SSH (dropbear) server not working=== == Self== === How to Add Files to a SELF Ramdisk=== === How to Increase the Size of the Ramdisk=== == RTAI== === Conflicts with asm clobber list=== == BDI2000== === Where can I find BDI2000 Configuration Files?=== === How to Debug Linux Exceptions=== === How to single step through "RFI" instruction=== === Setting a breakpoint doesn't work=== === Remote 'g' packet reply is too long=== == Motorola LITE5200 Board== === LITE5200 Installation Howto=== === USB does not work on Lite5200 board=== = Glossary= *参考 **https://www.denx.de/wiki/DULG/Manual [[Category:Uboot]]
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