[Q] Booting kernel from NFS?

Steve Chen schen at mvista.com
Tue Mar 22 08:21:10 EDT 2011

On Tue, Mar 22, 2011 at 6:21 AM, Baurzhan Ismagulov <ibr at radix50.net> wrote:
> On Sun, Mar 20, 2011 at 04:13:04PM +0800, Chen Wenjie wrote:
>>       I am debuging some issues on an arm-arch board.
>> now, I have to compile the whole kernel, download zImage to the target board
>> and reboot the board again and again. Since the relations between the
>> source files are complex, it is difficult to just write a module for insmod/rmmod.
>>       My question is: is there any way to boot the kernel from NFS? so we can
>> use zImage on the host machine through an ethernet/USB cable. Then we needn't
>> download the zImage file to the target board when we debug it.
>>       Is there any bootloader with this feature? Any comments?
>> (now I use bootloader LK("Little Kernel"))
> U-Boot can download the kernel over TFTP.

Yes, you can use the tftp or bootp command under u-boot.  Use "help
<command>" for syntax.  Alternatively, you can edit /etc/dhcpd.conf on
the host machine and restart dhcp server to load the kernel



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