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Old 14th June 2014
BlueCoder BlueCoder is offline
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Default Trying to netboot openbsd with u-boot

I've created a menu system using u-boot on the beaglebone black.

So far I was able to script loading the openbsd kernel over the network and execute it.

u-boot has a "bootargs" variable which is transfered to the kernel.

It's evidently the way of setting "boot device" and "root device". But I can't find the appropriate documentation nor can I deduce it. I can specify booting from disk and that works. But I want to mount root over nfs.

With bootargs not set it asks me for a boot device.

I want to pass to the kernel that it should mount root over a nfs serverip and path I specify such as 192.168.1.2:/nfs/beaglebone/openbsd
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Old 14th June 2014
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jggimi jggimi is offline
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Hello, and welcome! INSTALL.armv7 says:
Code:
Please be aware that OpenBSD support for this platform is far from
complete.

At the moment the only way to boot the OpenBSD install is to copy the
miniroot for your board "miniroot-{am335x,beagle,imx,panda,sunxi}-55.fs"
image to an sdcard.
In addition, the arcihtecture is not listed among those with diskless(8) operation.

Since what you wish to do is not currently supported, I recommend opening a discussion on the arm@ OpenBSD mailing list, where knowledge of the OS on the ARM architecture is far greater.

Last edited by jggimi; 14th June 2014 at 03:10 PM. Reason: added diskless(8) comment
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Old 18th June 2014
thomasw_ thomasw_ is offline
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Quote:
Originally Posted by BlueCoder View Post
.... But I want to mount root over nfs.

With bootargs not set it asks me for a boot device.

I want to pass to the kernel that it should mount root over a nfs serverip and path I specify such as 192.168.1.2:/nfs/beaglebone/openbsd
Not sure if you have seen this article by OpenBSD's tedu@ but if you were to combine instructions in his last two sections (installing to the BBB's internal flash and netbooting) i think you'd be cooking. Ted runs his /home off of nfs.

http://www.tedunangst.com/flak/post/...agleBone-Black

Hope this helps.
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