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00. 目录

01. Uboot帮助命令

? 帮助

DengJin #help     ?       - alias for 'help'   帮助    base    - print or set address offset   打印或者设置地址的偏移    bdinfo  - print Board Info structure    板子的信息结构          boot    - boot default, i.e., run 'bootcmd'  启动    bootd   - boot default, i.e., run 'bootcmd'  启动    bootelf - Boot from an ELF image in memory   从内存中启动elf镜像    bootm   - boot application image from memory    从内存中启动应用镜像    bootp   - boot image via network using BOOTP/TFTP protocol 通过网络协议引导镜像    bootvx  - Boot vxWorks from an ELF image    chpart  - change active partition    改变活动的分区    cmp     - memory compare        内存比较    coninfo - print console devices and information 串口设备和信息    cp      - memory copy   内存拷贝    crc32   - checksum calculation crc32校验    dcache  - enable or disable data cache  使能或者禁用数据cache    dnw     - dnw     - initialize USB device and ready to receive for Windows server (specific)    echo    - echo args to console   输出参数到串口    editenv - edit environment variable 编辑环境变量    emmc    - Open/Close eMMC boot Partition    关闭或者打开emmc分区    env     - environment handling commands 环境变量操作    exit    - exit script   退出    ext2format- ext2format - disk format by ext2    格式化ext3    ext2load- load binary file from a Ext2 filesystem 从ext2文件系统中加载二进制文件    ext2ls  - list files in a directory (default /) 列出ext2文件系统中的文件    ext3format- ext3format - disk format by ext3    使用ext3格式化分区    false   - do nothing, unsuccessfully        fastboot- fastboot- use USB Fastboot protocol  usb fastboot协议    fatformat- fatformat - disk format by FAT32 格式化    fatinfo - fatinfo - print information about filesystem     fatload - fatload - load binary file from a dos filesystem    fatls   - list files in a directory (default /)    fdisk   - fdisk for sd/mmc.  分区    go      - start application at address 'addr' 从指定地址启动应用程序    help    - print command description/usage	帮助信息    icache  - enable or disable instruction cache 使能和禁用指令cache    iminfo  - print header information for application image    imxtract- extract a part of a multi-image    itest   - return true/false on integer compare    loadb   - load binary file over serial line (kermit mode)    loads   - load S-Record file over serial line    loady   - load binary file over serial line (ymodem mode)    loop    - infinite loop on address range    md      - memory display     内存的内容显示    mm      - memory modify (auto-incrementing address)   内存的内容修改    mmc     - MMC sub system    mmcinfo - mmcinfo 
   
    -- display MMC info 显示MMC信息    movi    - movi  - sd/mmc r/w sub system for SMDK board    mtdparts- define flash/nand partitions    mtest   - simple RAM read/write test    mw      - memory write (fill)    nfs     - boot image via network using NFS protocol 使用NFS协议启动镜像    nm      - memory modify (constant address) 内存修改    ping    - send ICMP ECHO_REQUEST to network host    printenv- print environment variables 打印环境变量    reginfo - print register information     打印寄存器信息    reset   - Perform RESET of the CPU     重置CPU         run     - run commands in an environment variable 运行环境变量中的命令    saveenv - save environment variables to persistent storage 保存设置    setenv  - set environment variables     设置环境变量    showvar - print local hushshell variables    sleep   - delay execution for some time     睡眠    source  - run script from memory 从内存中运行脚本    test    - minimal test like /bin/sh    tftpboot- boot image via network using TFTP protocol    true    - do nothing, successfully    usb     - USB sub-system    version - print monitor version 输出u-boot的版本
   

02. md命令

DengJin # help mdmd - memory displayUsage:md [.b, .w, .l] address [# of objects]DengJin # # 默认显示256字节DengJin # md 4000000040000000: ffffffff ffffffff ffffffff ffffffff    ................40000010: ffffffff ffffffff ffffffff ffffffff    ................40000020: ffffffff ffffffff ffffffff ffffffff    ................40000030: ffffffff ffffffff ffffffff ffffffff    ................40000040: ffffffff ffffffff ffffffff ffffffff    ................40000050: ffffffff ffffffff ffffffff ffffffff    ................40000060: ffffffff ffffffff ffffffff ffffffff    ................40000070: ffffffff ffffffff ffffffff ffffffff    ................40000080: ffffffff ffffffff ffffffff ffffffff    ................40000090: ffffffff ffffffff ffffffff ffffffff    ................400000a0: ffffffff ffffffff ffffffff ffffffff    ................400000b0: ffffffff ffffffff ffffffff ffffffff    ................400000c0: ffffffff ffffffff ffffffff ffffffff    ................400000d0: ffffffff ffffffff ffffffff ffffffff    ................400000e0: ffffffff ffffffff ffffffff ffffffff    ................400000f0: ffffffff ffffffff ffffffff ffffffff    ................DengJin # # 以字节为单位显示64个字节DengJin # md.b 40000000000000000: 06 00 00 ea fe ff ff ea fe ff ff ea fe ff ff ea    ................00000010: fe ff ff ea fe ff ff ea 1a 30 00 ea 1b 30 00 ea    .........0...0..00000020: a4 01 9f e5 00 10 a0 e3 00 10 80 e5 9c 01 9f e5    ................00000030: 00 00 90 e5 3e 00 00 e2 3e 00 30 e3 0d 00 00 1a    ....>...>.0.....DengJin # # 从指定的地址开始显示8个字节DengJin # md.b 40000000 840000000: ff ff ff ff ff ff ff ff    ........DengJin # # 以两个字节为单位 显示8个单位DengJin # md.w 40000000 840000000: ffff ffff ffff ffff ffff ffff ffff ffff    ................DengJin # # 显示四个字节DengJin # md.l 40000000 140000000: ffffffff    ....DengJin #

03. mm命令

内存修改内容命令

DengJin # help mmmm - memory modify (auto-incrementing address)Usage:mm [.b, .w, .l] addressDengJin # # 字节DengJin # mm.b 4000800040008000: ff ? 0xff40008001: ff ? 0xee40008002: ff ? 40008003: ff ? 40008004: ff ? quit# 两个字节为单位DengJin # mm.w 4000800040008000: eeff ? 0x111140008002: ffff ? 0x222240008004: ffff ? 0x333340008006: ffff ? quit# 四个字节为单位DengJin # mm.l 4000800040008000: 22221111 ? 1140008004: ffff3333 ? 240008008: ffffffff ? 334000800c: ffffffff ? 4440008010: ffffffff ? 5540008014: ffffffff ? 6640008018: ffffffff ? 774000801c: ffffffff ? 8840008020: ffffffff ? quit

应用示例一：控制LED灯

# LED --->  GPM4_0 GPM4_1 GPM4_2 GPM4_3# CON 0x110002E0 # DAT 0x110002E4# 所有的灯亮DengJin #mm.l 0x110002E4  110002e4: 0000000c ? 0110002e8: 00005555 ? quit# 所有的灯灭DengJin #mm.l 0x110002E4110002e4: 00000000 ? 0xf110002e8: 00005555 ? quit

应用示例二：控制蜂鸣器

# Buzzer ---> GPD0_0# CON 0x114000A0# DAT 0x114000A4# 配置为输出DengJin #mm.l 0x114000A0114000a0: 00000000 ? 0x1114000a4: 0000000c ? quit# 高电平 峰鸣器叫DengJin #mm.l 0x114000A4114000a4: 0000000c ? 0xd114000a8: 00000055 ? quit# 低电平 峰鸣器不叫DengJin #mm.l 0x114000A4114000a4: 0000000d ? c114000a8: 00000055 ? quit

04. printenv命令

DengJin # help printenvprintenv - print environment variablesUsage:printenv     - print values of all environment variablesprintenv name ...    - print value of environment variable 'name'DengJin # # 输出环境变量DengJin #printenvbaudrate=115200  波特率bootcmd=movi read kernel 0 40008000;movi read rootfs 0 41000000 400000;bootm 40008000 41000000bootdelay=5 启动内核的时候延时ethaddr=00:40:5c:26:0a:5b   硬件地址gatewayip=192.168.0.1       网关ipaddr=192.168.0.20         IP地址netmask=255.255.255.0       掩码serverip=192.168.0.10       服务器的IP地址Environment size: 252/16380 bytesDengJin #

05. setenv命令

DengJin # help setenvsetenv - set environment variablesUsage:setenv name value ...    - set environment variable 'name' to 'value ...'setenv name    - delete environment variable 'name'DengJin # # 设置环境变量DengJin #setenv aa 33# 变量名后没有值 那么就是取消环境变量DengJin #setenv aa

06. saveenv命令

DengJin # help saveenvsaveenv - save environment variables to persistent storageUsage:saveenv DengJin # # 保存环境变量DengJin #saveenvSaving Environment to SMDK bootable device...done

07. reset命令

DengJin # help resetreset - Perform RESET of the CPUUsage:reset DengJin # # 重新启动u-bootDengJin #reset

08. base命令

DengJin # help basebase - print or set address offsetUsage:base     - print address offset for memory commandsbase off    - set address offset for memory commands to 'off'DengJin # # 设置偏移地址DengJin # base 40008000Base Address: 0x40008000# 打印偏移地址DengJin # baseBase Address: 0x40008000DengJin #

09. bdinfo命令

DengJin # help bdinfobdinfo - print Board Info structureUsage:bdinfo DengJin # DengJin # bdinfoarch_number = 0x00001200boot_params = 0x40000100DRAM bank   = 0x00000000-> start    = 0x40000000-> size     = 0x10000000DRAM bank   = 0x00000001-> start    = 0x50000000-> size     = 0x10000000DRAM bank   = 0x00000002-> start    = 0x60000000-> size     = 0x10000000DRAM bank   = 0x00000003-> start    = 0x70000000-> size     = 0x0FF00000ethaddr     = 00:40:5c:26:0a:5bip_addr     = 192.168.0.20baudrate    = 0 bpsTLB addr    = 0x3FFF0000relocaddr   = 0x43E00000reloc off   = 0x00000000irq_sp      = 0x43CFBF58sp start    = 0x43CFBF50FB base     = 0x00000000DengJin #

10. cmp命令

DengJin # help cmpcmp - memory compareUsage:cmp [.b, .w, .l] addr1 addr2 countDengJin #

11. coninfo命令

DengJin # help coninfoconinfo - print console devices and informationUsage:coninfo DengJin # coninfoList of available devices:serial   80000003 SIO DengJin #

12. crc32命令

DengJin # help crc32crc32 - checksum calculationUsage:crc32 address count [addr]    - compute CRC32 checksum [save at addr]DengJin # crc32 40000000 8CRC32 for 40000000 ... 40000007 ==> 2144df1cDengJin #

13. dcache

DengJin # help dcachedcache - enable or disable data cacheUsage:dcache [on, off]    - enable or disable data (writethrough) cache# 查看dcache状态DengJin # dcache   Data (writethrough) Cache is OFFDengJin #

14. echo命令

DengJin # help echoecho - echo args to consoleUsage:echo [args..]    - echo args to console; \c suppresses newline    # 输出信息到终端DengJin # echo "hello world"hello worldDengJin #

15. emmc命令

DengJin # help emmcemmc - Open/Close eMMC boot PartitionUsage:emmc open  emmc close 

16. env命令

DengJin # help envenv - environment handling commandsUsage:env default -f - reset default environmentenv edit name - edit environment variableenv export [-t | -b | -c] addr [size] - export environmntenv import [-d] [-t | -b | -c] addr [size] - import environmntenv print [name ...] - print environmentenv run var [...] - run commands in an environment variableenv save - save environmentenv set [-f] name [arg ...]

17. exit命令

DengJin # help exitexit - exit scriptUsage:exit DengJin # exitexit not allowed from main input shell.DengJin #

18. version命令

DengJin # help versionversion - print monitor versionUsage:version # 输出uboot版本信息DengJin # versionU-Boot 2010.12 (Jun 04 2020 - 20:12:26) for TINY4412DengJin #

19. source命令

DengJin # help source source - run script from memoryUsage:source [addr]        - run script starting at addr        - A valid image header must be presentDengJin #

20. sleep命令

DengJin # help sleepsleep - delay execution for some timeUsage:sleep N    - delay execution for N seconds (N is _decimal_ !!!)DengJin # sleep 3DengJin #

21. showvar命令

DengJin # help showvarshowvar - print local hushshell variablesUsage:showvar     - print values of all hushshell variablesshowvar name ...    - print value of hushshell variable 'name'DengJin # showvarHUSH_VERSION=0.01DengJin #

22. reginfo命令

DengJin # help reginforeginfo - print register informationUsage:reginfo DengJin #

23. 附录

其它命令放在后面部署环境的时候使用…

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