Date: Thu, 24 Sep 2015 19:54:13 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Randy Westlund <rwestlun@gmail.com>, Ian Lepore <ian@freebsd.org> Cc: freebsd-arm@freebsd.org Subject: Re: NFS Root with Raspberry Pi (nfs_diskless: no interface) Message-ID: <560438C5.3090404@selasky.org> In-Reply-To: <20150924163658.GC32257@gmail.com> References: <20150922052522.GA62140@gmail.com> <00C49FEB-E8EF-4469-85E2-0F901215CD11@cs.huji.ac.il> <20150923050414.GB43653@gmail.com> <91AAC64E-4C38-47AA-8910-48F7654A7524@cs.huji.ac.il> <20150923174445.GE43653@gmail.com> <CFAAFAE2-F0B2-431B-93C6-61D66464B7FD@cs.huji.ac.il> <1443105426.1224.272.camel@freebsd.org> <20150924163658.GC32257@gmail.com>
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On 09/24/15 18:36, Randy Westlund wrote:
> On Thu, Sep 24, 2015 at 08:37:06AM -0600, Ian Lepore wrote:
>> Try setting boot.netif.name="ue0" in loader.conf. I've never tried
>> that, but in looking at the code, there's some chance it could work. :)
>>
>> What I do is put these options into my RPi kernel config:
>>
>> options BOOTP
>> options BOOTP_NFSROOT
>> options BOOTP_NFSV3
>> options BOOTP_WIRED_TO=ue0
>>
>> But this requires configuring a bootp or dhcp server to provide the
>> info. It should be possible to netboot without using BOOTP.
>>
>> -- Ian
>
> No luck with boot.netif.name.
>
> I'm using the kernel that comes in the FreeBSD RPI-B disk image. Is
> there a way to see what it was built with? I tried running strings on
> the kernel, but I'm not sure what to look for. Otherwise I guess I'll
> build one myself.
>
> Randy
>
Hi,
The problem is that the code in:
sys/nfs/bootp_subr.c: SYSINIT(bootp_rootconf, SI_SUB_ROOT_CONF,
SI_ORDER_FIRST, bootpc_init, NULL);
doesn't wait for the USB ethernet device to be enumerated. Only the
vfs_mountroot() code which is running from the init-process does so.
Not sure what the best way to solve this is. Try putting:
pause("W", hz * 4);
Into the beginning of the "bootpc_init()" function.
--HPS
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