睿丰德科技 专注RFID识别技术和条码识别技术与管理软件的集成项目。质量追溯系统、MES系统、金蝶与条码系统对接、用友与条码系统对接 Linux下USB烧写uImage kernel   1.启动开发板，进入u-boot：（如果开发板中没有系统，可以通过用SD卡方式启动开发板进入）   U-Boot 2011.06 (Mar 19 2012 - 08:45:34) for MINI6410   CPU: S3C6400@667MHz Fclk = 667MHz, Hclk = 133MHz, Pclk = 66MHz (ASYNC Mode) Board: MINI6410 DRAM: 256 MiB NAND: 512 MiB MMC: SAMSUNG SD/MMC: Host controler CH0 SD card is SD_VERSION_2 SD/MMC size : 3911680 block * 512B = 1910MB Video: no Video params found, try bootargs~~ 640x480x24 31kHz 59Hz [petworm] video_hw_init: <640, 480, 640, 480> Error: Bad gzipped data Error: no valid bmp or bmp.gz image at 57500000 In: serial Out: serial Err: serial Net: dm9000 Hit any key to stop autoboot: 3   2.按任意键进入命令行状态后，运行dnw命令，文件存放地址作为参数传入（十六进制）：   MINI6410 # dnw 50008000 Insert a OTG cable into the connector!   3.插入USB电缆，连接主机和开发板，minicom会出现如下提示：   USB Cable is Connected Now, Waiting for DNW to transmit data   4.另开一个终端，加载secbulk驱动：   sudo insmod secbulk   5.建立secbulk驱动设备节点(通过试验，可跳过此步)：   sudo mknod /dev/secbulk0 c 102 0   6.运行dnw程序，将欲传送的uImage的带路径的文件名作为参数传入:   sudo ./dnw uImage_a70 #(我们选择当前目录下的uImage_a70文件)   回车后传输开始，直至传送完毕。Minicom端提示如下：   Now, Waiting for DNW to transmit data Download Done!! Download Address: 0x50008000, Download Filesize:0x40de8 Checksum is being calculated. Checksum O.K.   主机端提示如下：   liwei@liwei:~/Desktop/dnw_linux/dnw$ sudo ./dnw uImage_a70 file name : uImage_a70 file size : 3763296 bytes Writing data... 100% 3763306 bytes OK   此时，文件传送完毕，且校验正确。这时我们就可以用u-boot命令来将文件写入相应 的nandflash地址中：   MINI6410 # nand erase 80000 400000 NAND erase: device 0 offset 0x80000, size 0x400000 Erasing at 0x460000 -- 100% complete. OK MINI6410 # nand write 50008000 80000 400000 NAND write: device 0 offset 0x80000, size 0x400000 4194304 bytes written: OK   7.将S2调整到NAND启动位置，重启开发板后从NandFlash读取内核到内存，运行结 果如下：   U-Boot 2011.06 (Mar 16 2012 - 13:58:27) for MINI6410   CPU: S3C6400@667MHz Fclk = 667MHz, Hclk = 133MHz, Pclk = 66MHz (ASYNC Mode) Board: MINI6410 DRAM: 256 MiB NAND: 512 MiB MMC: SAMSUNG SD/MMC: Host controler CH0 No SD/MMC card detected! No MMC card for env! Using default environment Video: no Video params found, try bootargs~~ 640x480x24 31kHz 59Hz [petworm] video_hw_init: <640, 480, 640, 480> No SD/MMC card detected! Video: No MMC card for background image! In: serial Out: serial Err: serial Net: dm9000 Hit any key to stop autoboot: 0 MINI6410 # nand read 50008000 80000 400000 NAND read: device 0 offset 0x80000, size 0x400000 4194304 bytes read: OK   8.从内存中启动内核：   MINI6410 # bootm 50008000 ## Booting kernel from Legacy Image at 50008000 ... Image Name: petworm Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 3763232 Bytes = 3.6 MiB Load Address: 50008000 Entry Point: 50008040 Verifying Checksum ... OK XIP Kernel Image ... OK OK   Starting kernel ...   Uncompressing Linux... done, booting the kernel. Initializing cgroup subsys cpu Linux version 2.6.38-FriendlyARM (root@jensen) (gcc version 4.5.1 (ctng-1.8.1-F1 CPU: ARMv6-compatible processor [410fb766] revision 6 (ARMv7), cr=00c5387f CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache Machine: MINI6410 。。。 。。。 至此，Linux下用USB电缆烧写uImage成功完成！   附： 我们可以通过使用u-boot自带的mkimage命令来将zImage转换为uImage文件，命令如下： mkimage -A arm -O linux -T kernel -C none -a 0x50008000 -e 0x50008040 -n "image-name" -d zImage_a70 uImage_a70 此命令将zImage_a70文件转换为uImage_a70文件，镜像的名称为image-name。RFID管理系统集成商 RFID中间件 条码系统中间层 物联网软件集成