uboot中使用tftp命令下载
uboot中使用tftp命令下载
uboot 提供了tftp命令,可以连接到tftp服务器以下载文件虚拟机Fedora9下,安装tftp服务
yum install xinetd
yum install tftp tftp-sever
下面是我的tftp配置
- [root@localhost /]# cat /etc/xinetd.d/tftp
- # default: off
- # description: The tftp server serves files using the trivial file transfer \
- # protocol. The tftp protocol is often used to boot diskless \
- # workstations, download configuration files to network-aware printers, \
- # and to start the installation process for some operating systems.
- service tftp
- {
- socket_type = dgram
- protocol = udp
- wait = yes
- user = root
- server = /usr/sbin/in.tftpd
- server_args = -s /tftpboot -c
- disable = no
- per_source = 11
- cps = 100 2
- flags = IPv4
- }
ln -s /opt/FriendlyARM/mini2440/linux-2.6.32.2/arch/arm/boot/ /tftpboot
然后将目录权限增大一点,以防万一
chmod 777 /tftpboot
chmod 777 /opt/FriendlyARM/mini2440/linux-2.6.32.2/arch/arm/boot/
还需将selinux关闭。在桌面菜单,系统--》管理--》selinux management ,将 Enforcing Mode 设置为 Disabled .
用命令serviceconf确认一下tftp服务有没开启,需将其打开
在开发板uboot下如果serverip不是主机ip需要
setenv serverip 192.168.1.116(我的fedora ip)
再
saveenv
另外,板子的一些环境变量如下
- EmbedSky> printenv
- bootcmd=nboot 0x32000000 kernel; bootm 0x32000000
- bootdelay=0
- baudrate=115200
- ethaddr=0a:1b:2c:3d:4e:5f
- ipaddr=192.168.1.6
- netmask=255.255.255.0
- mtdids=nand0=nandflash0
- mtdparts=mtdparts=nandflash0:256k@0(bios),128k(params),128k(toc),512k(eboot),1024k(logo),2m(kernel),-(root)
- filesize=0
- filesize+1=0
- fileaddr=30000000
- bootargs=noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0
- serverip=192.168.1.116
- stdin=serial
- stdout=serial
- stderr=serial
- partition=nand0,0
- mtddevnum=0
- mtddevname=bios
- Environment size: 497/131068 bytes
比如
tftp 32000000 zImage
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