Re: sparc64 network autoconfiguration

[Andrei Borzenkov]

On Fri, Mar 18, 2016 at 12:49 PM, Stanislav Kholmanskikh
<address@hidden> wrote:
> Hi!
>
>
> On 03/18/2016 11:30 AM, Andrei Borzenkov wrote:
>>
>> On Fri, Mar 18, 2016 at 11:07 AM, Vladimir 'phcoder' Serbinenko
>> <address@hidden> wrote:
>>>
>>>
>>>
>>> Le ven. 18 mars 2016 08:30, Andrei Borzenkov <address@hidden> a
>>> écrit :
>>>>
>>>>
>>>> Documentation says
>>>>
>>>> On sparc64 GRUB is unable to determine which server it was booted from.
>>>>
>>>> Could someone clarify what it means here? sparc64 is ieee1275 that
>>>> supports auto configuration for network boot - at least, it has code
>>>> to do it. So far the only platform where it is not possible seems to
>>>> be uboot (which is also missing from Platform limitations section).
>>>
>>>
>>> AFAIR sparc 64 doesn't provide fields code for ieee1275 depends on.
>>> Moreover
>>> sparc64 doesn't support booting via dhcp and works thorough rarp instead
>>
>>
>>
>> Strictly speaking they boot via bootparams protocol, RARP is used for
>> initial IP auto-configuration. Sun/Oracle servers support DHCP boot
>> for quite some time; actually it is mandatory for Solaris 11 AI
>> (automated installer). I am not sure whether they export this
>> information in OBP though.
>>
>> Someone from Oracle listening here?
>
>
> I can't say for Oracle HW in general, but on T4, T5, T7 machines booting via
> DHCP/TFTP is supported, for example via 'boot net:dhcp'.
>

Sure, but is content of DHCP ACK available to GRUB (see
grub-core/net/drivers/ieee1275/ofnet.c:grub_ieee1275_net_config_real())
- i.e. can GRUB do autoconfiguration of network interface used to load
it based on information from firmware?


> In our group we do load grub2 via dhcp/tftp. There were some issues, but in
> general this scheme works fine. I hope patches for these issues will be sent
> here soon.
>
> Thanks.
>
>
>
>>
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