uboot里面常用的就几个命令，还有很多是不熟悉的，简单的了解一下，说不定以后会用到、
有很多的命令可能是“自定义”的，这同时需要了解uboot下的自定义CMD的实现，这次就不讲了。
在当前的uboot下的命令如下：
? - alias for 'help' 打印当前注册的所有命令base - print or set address offset 打印或设置地址偏移量bdinfo - print Board Info structure 打印板级信息结构boot - boot default, i.e., run 'bootcmd' run 'bootcmd'bootd - boot default, i.e., run 'bootcmd' run 'bootcmd'bootelf - Boot from an ELF image in memory 从内存中的ELF镜像启动bootm - boot application image from memory 从内存中引导应用镜像启动bootp - boot image via network using BOOTP/TFTP protocol 通过BOOTP/TFTP协议使用网络启动镜像bootvx - Boot vxWorks from an ELF image 使用ELF镜像启动vxWorkscipher_test- CIPHER Encrypt And Decrypt Test 密码加密和解密测试cmp - memory compare 内存比较coninfo - print console devices and information 打印控制台设备和信息cp - memory copy 内存拷贝crc32 - checksum calculation CRC32校验和计算dcache - enable or disable data cache 使能/失能数据cacheddr - ddr training function 内存训练函数decjpg - jpgd - decode jpeg picture. 解码jpeg图像decjpg [format]dhcp - boot image via network using DHCP/TFTP protocol 使用DHCP/TFTP协议通过网络启动映像dm - Driver model low level access 驱动程序模型低级别访问echo - echo args to console 将参数输出到控制台editenv - edit environment variable 修改环境变量env - environment handling commands 环境处理命令erase - erase FLASH memory 擦除闪存exit - exit script 退出脚本false - do nothing, unsuccessfully 什么也不做,但没有成功flinfo - print FLASH memory information 打印闪存信息getinfo - print hardware information 打印硬件信息go - start application at address 'addr' 在地址“addr”启动应用程序go_a53cpu1- start a53-cpu1 at address 'addr' 在地址“addr”启动a53-cpu1gzwrite - unzip and write memory to block device 解压并写入内存以阻止设备hash - Calcluate hash. 计算哈希散列值hash_test- hash_test [x]:[0] SHA1; [1] SHA256; [2] HMAC-SHA1; [3] HMAC-SHA256;help - print command description/usage 打印命令描述/使用icache - enable or disable instruction cache 使能/失能Icachaiminfo - print header information for application image 打印应用程序图像的标题信息imxtract- extract a part of a multi-image 提取multi-image的一部分itest - return true/false on integer compare 对整数比较返回true/falseklad_test- KLAD Testloadb - load binary file over serial line (kermit mode) 通过串行线加载二进制文件(kermit模式)loads - load S-Record file over serial line 通过串行线加载S-Record文件loadx - load binary file over serial line (xmodem mode) 通过串行线加载二进制文件(xmodem模式)loady - load binary file over serial line (ymodem mode) 通过串行线加载二进制文件(ymodem模式)loop - infinite loop on address range 地址范围无限循环md - memory display 内存显示mii - MII utility commands MII实用程序命令mm - memory modify (auto-incrementing address) 内存修改(自动递增地址)mw - memory write (fill) 内存写(填充)nfs - boot image via network using NFS protocol 使用NFS协议通过网络引导映像nm - memory modify (constant address) 内存修改(常量地址)part - disk partition related commands 与磁盘分区相关的命令ping - send ICMP ECHO_REQUEST to network host 发送ICMP回显请求到网络主机printenv- print environment variables 打印环境变量protect - enable or disable FLASH write protection 启用或禁用FLASH写保护pxe - commands to get and boot from pxe files 从pxe文件获取和引导的命令reset - Perform RESET of the CPU 执行CPU重置rng_test- RNG Testrsa_enc_test- RSA PKCS1# V1_5 encrypt/decrypt Test RSA PKCS1# V1 5加密/解密测试rsa_sign_test- RSA PKCS1# V1_5 Sign Test RSA PKCS1# V1 5符号测试run - run commands in an environment variable 在环境变量中运行命令saveenv - save environment variables to persistent storage 将环境变量保存到持久存储中setenv - set environment variables 设置环境变量setexpr - set environment variable as the result of eval expression 将环境变量设置为eval表达式的结果setvobg - setvobg - set vo backgroud color.- setvobg [dev color] 设置vo背景颜色。sf - SPI flash sub-system SPI flash子系统showvar - print local hushshell variables 打印本地hushshell变量sleep - delay execution for some time 延迟执行一段时间source - run script from memory 从内存中运行脚本startgx - startgx - open graphics layer.- startgx [layer addr stride x y w h] 开放图像层。startvl - startvl - open video layer.- startvl [layer addr stride x y w h] 开放视频层。startvo - startvo - open vo device with a certain output interface.- startvo [dev intftype sync] 打开具有特定输出接口的vo设备。stopgx - stopgx - close graphics layer.- stopgx [layer] 关闭图像层。stopvl - stopvl - close video layer.- stopvl [layer] 关闭视频层。stopvo - stopvo - close interface of vo device.- stopvo [dev] 关闭vo设备接口。test - minimal test like /bin/shtftpboot- boot image via network using TFTP protocoltrue - do nothing, successfullyunzip - unzip a memory region 解压缩内存区域usb - USB sub-system USB子系统usbboot - boot from USB device USB设备引导version - print monitor, compiler and linker version 打印编译器和链接器版本
看完之后...感觉并没有什么用...=.=