00. 目录

文章目录

  • 00. 目录
  • 01. Uboot帮助命令
  • 02. md命令
  • 03. mm命令
  • 04. printenv命令
  • 05. setenv命令
  • 06. saveenv命令
  • 07. reset命令
  • 08. base命令
  • 09. bdinfo命令
  • 10. cmp命令
  • 11. coninfo命令
  • 12. crc32命令
  • 13. dcache
  • 14. echo命令
  • 15. emmc命令
  • 16. env命令
  • 17. exit命令
  • 18. version命令
  • 19. source命令
  • 20. sleep命令
  • 21. showvar命令
  • 22. reginfo命令
  • 23. 附录

01. Uboot帮助命令

? 帮助
help 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 imagechpart  - 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cachednw     - 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ext3ext2load- 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 filesystemfatls   - 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cacheiminfo  - print header information for application imageimxtract- extract a part of a multi-imageitest   - return true/false on integer compareloadb   - load binary file over serial line (kermit mode)loads   - load S-Record file over serial lineloady   - load binary file over serial line (ymodem mode)loop    - infinite loop on address rangemd      - 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 systemmmcinfo - mmcinfo <dev num>-- display MMC info 显示MMC信息movi    - movi  - sd/mmc r/w sub system for SMDK boardmtdparts- define flash/nand partitionsmtest   - simple RAM read/write testmw      - 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 hostprintenv- 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 variablessleep   - 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/shtftpboot- boot image via network using TFTP protocoltrue    - do nothing, successfullyusb     - USB sub-systemversion - print monitor version 输出u-boot的版本

02. md命令

DengJin # help md
md - memory displayUsage:
md [.b, .w, .l] address [# of objects]
DengJin # # 默认显示256字节
DengJin # md 40000000
40000000: 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 400000000
00000000: 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 8
40000000: 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 8
40000000: ffff ffff ffff ffff ffff ffff ffff ffff    ................
DengJin # # 显示四个字节
DengJin # md.l 40000000 1
40000000: ffffffff    ....
DengJin #

03. mm命令

内存修改内容命令

DengJin # help mm
mm - memory modify (auto-incrementing address)Usage:
mm [.b, .w, .l] address
DengJin # # 字节
DengJin # mm.b 40008000
40008000: ff ? 0xff
40008001: ff ? 0xee
40008002: ff ?
40008003: ff ?
40008004: ff ? quit# 两个字节为单位
DengJin # mm.w 40008000
40008000: eeff ? 0x1111
40008002: ffff ? 0x2222
40008004: ffff ? 0x3333
40008006: ffff ? quit# 四个字节为单位
DengJin # mm.l 40008000
40008000: 22221111 ? 11
40008004: ffff3333 ? 2
40008008: ffffffff ? 33
4000800c: ffffffff ? 44
40008010: ffffffff ? 55
40008014: ffffffff ? 66
40008018: ffffffff ? 77
4000801c: ffffffff ? 88
40008020: 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 ? 0
110002e8: 00005555 ? quit# 所有的灯灭
DengJin #mm.l 0x110002E4
110002e4: 00000000 ? 0xf
110002e8: 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 0x114000A0
114000a0: 00000000 ? 0x1
114000a4: 0000000c ? quit# 高电平 峰鸣器叫
DengJin #mm.l 0x114000A4
114000a4: 0000000c ? 0xd
114000a8: 00000055 ? quit# 低电平 峰鸣器不叫
DengJin #mm.l 0x114000A4
114000a4: 0000000d ? c
114000a8: 00000055 ? quit

04. printenv命令

DengJin # help printenv
printenv - print environment variablesUsage:
printenv - print values of all environment variables
printenv name ...- print value of environment variable 'name'
DengJin # # 输出环境变量
DengJin #printenv
baudrate=115200  波特率
bootcmd=movi read kernel 0 40008000;movi read rootfs 0 41000000 400000;bootm 40008000 41000000
bootdelay=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 bytes
DengJin #

05. setenv命令

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

07. reset命令

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

08. base命令

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

09. bdinfo命令

DengJin # help bdinfo
bdinfo - print Board Info structureUsage:
bdinfo
DengJin # DengJin # bdinfo
arch_number = 0x00001200
boot_params = 0x40000100
DRAM bank   = 0x00000000
-> start    = 0x40000000
-> size     = 0x10000000
DRAM bank   = 0x00000001
-> start    = 0x50000000
-> size     = 0x10000000
DRAM bank   = 0x00000002
-> start    = 0x60000000
-> size     = 0x10000000
DRAM bank   = 0x00000003
-> start    = 0x70000000
-> size     = 0x0FF00000
ethaddr     = 00:40:5c:26:0a:5b
ip_addr     = 192.168.0.20
baudrate    = 0 bps
TLB addr    = 0x3FFF0000
relocaddr   = 0x43E00000
reloc off   = 0x00000000
irq_sp      = 0x43CFBF58
sp start    = 0x43CFBF50
FB base     = 0x00000000
DengJin #

10. cmp命令

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

11. coninfo命令

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

12. crc32命令

DengJin # help crc32
crc32 - checksum calculationUsage:
crc32 address count [addr]- compute CRC32 checksum [save at addr]
DengJin # crc32 40000000 8
CRC32 for 40000000 ... 40000007 ==> 2144df1c
DengJin #

13. dcache

DengJin # help dcache
dcache - 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 OFF
DengJin #

14. echo命令

DengJin # help echo
echo - 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 world
DengJin #

15. emmc命令

DengJin # help emmc
emmc - Open/Close eMMC boot PartitionUsage:
emmc open <device num>
emmc close <device num>

16. env命令

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

17. exit命令

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

18. version命令

DengJin # help version
version - print monitor versionUsage:
version # 输出uboot版本信息
DengJin # versionU-Boot 2010.12 (Jun 04 2020 - 20:12:26) for TINY4412
DengJin #

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 present
DengJin #

20. sleep命令

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

21. showvar命令

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

22. reginfo命令

DengJin # help reginfo
reginfo - 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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