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setenv ethaddr 00:0E:99:02:07:43
setenv serverip 138.198.187.68
setenv ipaddr 138.198.187.199
setenv bootcmd bootm 0x40000
setenv bootargs console=ttyS0,115200n8 noinitrd rw ip=on root=/dev/mtdblock3 rootfstype=jffs2 init=/sbin/init
tftpboot 0x10000000 uImage.cc
常用命令
ping 138.198.187.68
ifconfig 查看以太网信息
uname -a 查看Linux的版本
version 查看UBoot的版本
So far just notes on how to flash images ...
Flash u-boot, assumes tftp download and u-boot named uboot.bin.
OMAP5912 OSK # tftpboot 0x10000000 uboot.bin
OMAP5912 OSK # protect off 1:0
OMAP5912 OSK # erase 1:0
OMAP5912 OSK # cp.b 0x10000000 0x0 $(filesize)
OMAP5912 OSK # protect on 1:0
Flash kernel, assumes tftp download and kernel named uImage.cc. Here are the u-boot commands.
OMAP5912 OSK # tftpboot 0x10000000 uImage.cc
OMAP5912 OSK # erase 0x40000 0x23ffff
OMAP5912 OSK # cp.b 0x10000000 0x40000 $(filesize)
Flash jffs2 file system, assumes tftp download and file system image named fs.jffs2.
OMAP5912 OSK # tftpboot 0x10000000 fs.jffs2
OMAP5912 OSK # erase 0x240000 0x1ffffff
OMAP5912 OSK # cp.b 0x10000000 0x240000 $(filesize)
Here is my uboot environment.
OMAP5912 OSK # printenv
baudrate=115200
bootdelay=10
ethaddr=00:0e:99:02:03:fc
bootfile=u-boot.bin
filesize=16144
fileaddr=10000000
gatewayip=192.168.1.99
netmask=255.255.255.0
ipaddr=192.168.1.150
serverip=192.168.1.81
bootcmd=bootm 0x40000
bootargs== console=ttyS0,115200n8 noinitrd rw ip=on root=/dev/mtdblock3 rootfstype=jffs2 init=/sbin/init
stdin=serial
stdout=serial
stderr=serial
Environment size: 364/131068 bytes
OMAP5912 OSK #
Some quick info on using Das U-Boot
1 Table of Contents
Table of Contents
Check this first
Ethernet Usage
Serial Port Usage
Programming Flash Memory
Booting the Kernel
2 Check this first
The version of u-boot that comes on the OSK has the incorrect arch number. Before trying out new kernels, you should update to a newer version. Check the output of bdinfo to see what arch number uboot thinks you have. The old incorrect one is 0x000000EA and the new correct one is 0x00000203. New kernel will fail to boot if given the incorrect arch number. The output should look like this:
OMAP5912 OSK # bdinfo
arch_number = 0x00000203
env_t = 0x00000000
boot_params = 0x10000100
DRAM bank = 0x00000000
-> start = 0x10000000
-> size = 0x02000000
ethaddr = 00:0E:99:xx:xx:xx
ip_addr = x.x.x.x
baudrate = 115200 bps
3 Ethernet Usage
u-boot can use dhcp/bootp. You only need to set the u-boot ethaddr environment variable:
OMAP5912 OSK # printenv
baudrate=115200
bootdelay=20
ethaddr=00:0E:99:xx:xx:xx
bootcmd=bootp; bootm
stdin=serial
stdout=serial
stderr=serial
Environment size: 117/131068 bytes
OMAP5912 OSK # bootp
Using MAC Address 00:0E:99:xx:xx:xx
BOOTP broadcast 1
DHCP client bound to address 192.168.1.56
TFTP from server 192.168.1.10; our IP address is 192.168.1.56
Filename 'osk1/boot/uImage'.
Load address: 0x10000000
Loading: #################################################################
#################################################################
#################################################################
###################
done
Bytes transferred = 1095068 (10b59c hex)
OMAP5912 OSK #
u-boot uses tftp to transfer files. You'll need to setup a tftp server. To upload a kernel or other file using Ethernet:
OMAP5912 OSK # tftp 0x10000000 osk1/boot/uImage
Using MAC Address 00:0E:99:xx:xx:xx
TFTP from server 192.168.1.10; our IP address is 192.168.1.56
Filename 'osk1/boot/uImage'.
Load address: 0x10000000
Loading: #################################################################
#################################################################
#################################################################
###################
done
Bytes transferred = 1095068 (10b59c hex)
OMAP5912 OSK #
OMAP5912 OSK # tftp 0x10000000 osk1/u-boot-1.1.2.bin
Using MAC Address 00:0E:99:xx:xx:xx
TFTP from server 192.168.1.10; our IP address is 192.168.1.56
Filename 'osk1/u-boot-1.1.2.bin'.
Load address: 0x10000000
Loading: ##################
done
Bytes transferred = 87764 (156d4 hex)
OMAP5912 OSK #
4 Serial Port Usage
To upload a kernel using the serial port:
OMAP5912 OSK # loadb 0x10000000
## Ready for binary (kermit) download to 0x10000000 at 115200 bps...
- Then send a uImage.cc using kermit.
5 Programming Flash Memory
To flash the kernel:
OMAP5912 OSK # erase 0x0040000 0x0023ffff
Erasing sector 2 ... done
Erasing sector 3 ... done
...
Erasing sector 16 ... done
Erasing sector 17 ... done
Erased 16 sectors
OMAP5912 OSK # cp 0x10000000 0x00040000 0x00200000
Instructions on updating u-boot (tested)
OMAP5912 OSK # tftp 0x10000000 osk1/u-boot-1.1.2.bin
Using MAC Address 00:0E:99:xx:xx:xx
TFTP from server 192.168.1.10; our IP address is 192.168.1.56
Filename 'osk1/u-boot-1.1.2.bin'.
Load address: 0x10000000
Loading: ##################
done
Bytes transferred = 87764 (156d4 hex)
OMAP5912 OSK # protect off 00000000 0001ffff
Un-Protected 1 sectors
OMAP5912 OSK # era 00000000 0001ffff
Erasing sector 0 ... done
Erased 1 sectors
OMAP5912 OSK # cp.b 0x10000000 0x00000000 0x156d4
Copy to Flash...-done
OMAP5912 OSK # protect on 00000000 0001ffff
Protected 1 sectors
OMAP5912 OSK #
Instructions on flashing a root filesystem: First send over a filesytem image like betafilesys.jffs2 to address 0x10000000 as the kernel uploading instructions above and then flash it:
OMAP5912 OSK # erase 0x01000000 0x001ffffff
Erasing sector 128 ... done
...
Erasing sector 258 ... done
Flash is partitioned as follows:
# cat /proc/mtd
dev: size erasesize name
mtd0: 00020000 00020000 "BootLoader"
mtd1: 00020000 00020000 "Params"
mtd2: 00200000 00020000 "Kernel"
mtd3: 00dc0000 00020000 "Flash0 FileSys"
mtd4: 01000000 00020000 "Flash1 FileSys"
cfi_cmdset_0001: Erase suspend on write enabled
Using buffer write method
OMAP flash: CFI device at 0x00000000, 16MiB, 16-bit
cfi_cmdset_0001: Erase suspend on write enabled
Using buffer write method
OMAP flash: CFI device at 0x01000000, 16MiB, 16-bit
Concatenating MTD devices:
(0): ""
(1): ""
into device "omap-flash"
No RedBoot partition table detected in omap-flash
OMAP flash: using static partition definition
Creating 5 MTD partitions on "omap-flash":
0x00000000-0x00020000 : "BootLoader"
0x00020000-0x00040000 : "Params"
0x00040000-0x00240000 : "Kernel"
0x00240000-0x01000000 : "Flash0 FileSys"
0x01000000-0x02000000 : "Flash1 FileSys"
6 Booting the Kernel
To boot, use setenv and saveenv to get the correct environment. You can boot by hand using something like:
OMAP5912 OSK # cp 0x00040000 0x10000000 0x00200000
OMAP5912 OSK # bootm
You can make this automatic with:
OMAP5912 OSK # setenv bootcmd 'cp 0x00040000 0x10000000 0x00200000;bootm'
OMAP5912 OSK # saveenv
Saving Environment to Flash...
Un-Protected 1 sectors
Erasing Flash...
Erasing sector 1 ... done
Erased 1 sectors
Writing to Flash.../done
Protected 1 sectors
Or
OMAP5912 OSK # setenv bootcmd 'bootp; bootm'
OMAP5912 OSK # saveenv
Or
OMAP5912 OSK # setenv bootcmd bootm 0x40000
OMAP5912 OSK # setenv bootdelay 2
OMAP5912 OSK # saveenv
Or to tftp a kernel, and then nfs mount debian
TimRiker
uses:
OMAP5912 OSK # setenv bootargs console=ttyS0,115200n8 noinitrd ro devfs=nomount ip=dhcp root=/dev/nfs rootfstype=nfs nfsroot=1.2.3.4:/tftpboot/debian-unstable-arm/
OMAP5912 OSK # setenv bootcmd 'dhcp; bootm'
OMAP5912 OSK # setenv bootdelay 2
OMAP5912 OSK # saveenv
本文来自ChinaUnix博客,如果查看原文请点:http://blog.chinaunix.net/u1/35281/showart_281555.html |
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