Re: [coreboot] Hi...all
On Fri, Mar 26, 2010 at 4:34 AM, Stefan Reinauer ste...@coresystems.dewrote: On 3/6/10 9:24 PM, yhlu wrote: On Fri, Mar 5, 2010 at 10:26 AM, ron minnich rminn...@gmail.com wrote: What would coreboot need to do to support IPMI BMC? need to use BT or KCS interface to tell FRU list esp for the devices there is side band access from BMC Is there a standard way of doing this? Or is this mainboard /IPMI card dependend? should be standard. you can check ipmi driver in linux kernel. could have one simple version to hard code several impi message. Thanks Yinghai -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] Hi...all
On 3/6/10 9:24 PM, yhlu wrote: On Fri, Mar 5, 2010 at 10:26 AM, ron minnich rminn...@gmail.com mailto:rminn...@gmail.com wrote: What would coreboot need to do to support IPMI BMC? need to use BT or KCS interface to tell FRU list esp for the devices there is side band access from BMC Is there a standard way of doing this? Or is this mainboard /IPMI card dependend? -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] Hi...all
On Sat, Mar 06, 2010 at 01:12:51AM +0100, Carl-Daniel Hailfinger wrote: On 05.03.2010 19:26, ron minnich wrote: What would coreboot need to do to support IPMI BMC? Depends on the IPMI BMC. If you're lucky, it works out of the box, and if you're unlucky, you have to implement undocumented BIOS interfaces. The easiest solution is to buy a card and try it, and if it doesn't work, reverse engineer it or try another card. Besides that, IPMI is a security nightmare (see the discussions on the linux-kernel mailing list about IPMI bypassing host network security). Even worse - I have yet to encounter a reliable IPMI card. The sorts of problems I've encountered are: * specific packets can 'kill' the IPMI controller. Once the thing is hung, the only fix is a *cold* boot of the entire machine. * I've seen machines crash, taking the IPMI controller with them. Makes the whole thing kind of pointless... * general reliability issues. IPMI controllers also seem to like to hang themselves occasionally I really tried to make IPMI work reliably; I have an 80 machine cluster full of these things. I wasted a ton of time on them (3 different generations from 2 vendors - Tyan and Supermicro). I think that those issues were largely caused by extremely crappy proprietary firmware. But there is a more fundamental issue; the IPMI BMC is pretty tightly connected into the mainboard, by design. That's bad - how can you guarantee that IPMI BMC will always be available, fully out of band, when it is not 100% independent of the mainboard? In the end I gave up; I now use serial console servers (opengear is highly recommended) and switched PDUs (I've tried various brands, so far I like Raritan's Dominion series the best). That works, 100% of the time. Thanks, Ward. -- Ward Vandewege w...@gnu.org -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] Hi...all
So, if you're looking to buy 150 or so nodes, what's a reasonable coreboot-capable node *without* any sort of BMC/IPMI? I really need these IPMI-free boards and the vendors keep trying to shove this IPMI nonsense down our throats -- in spite of the fact that IPMI is such a failure. It's easy to see why, they get to charge a pretty nice premium for the presence of those BMCs. Coreboot would be a huge plus. A 45-second POST, in this day and age, is just simply ridiculous. Even were we to accept that 45-second post, the BIOS on this Nehalem new board is so defective that it's just unusuable for what we need -- it doesn't always come out of a reset. Ward, what's the latest thing you know of? thanks ron -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] Hi...all
On Fri, Mar 5, 2010 at 10:26 AM, ron minnich rminn...@gmail.com wrote: What would coreboot need to do to support IPMI BMC? need to use BT or KCS interface to tell FRU list esp for the devices there is side band access from BMC also may need to abitritry etc to make sure BMC and host don't access some devices at same time like GPIO, and i2c... YH -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] Hi...all
On Sat, Mar 6, 2010 at 12:24 PM, yhlu yingha...@gmail.com wrote: On Fri, Mar 5, 2010 at 10:26 AM, ron minnich rminn...@gmail.com wrote: What would coreboot need to do to support IPMI BMC? need to use BT or KCS interface to tell FRU list esp for the devices there is side band access from BMC also may need to abitritry etc to make sure BMC and host don't access some devices at same time like GPIO, and i2c... ah. You just gave me another reason to never want a BMC on board :-) OK, good to know. ron -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] Hi...all
What would coreboot need to do to support IPMI BMC? ron -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] Hi...all
On 05.03.2010 19:26, ron minnich wrote: What would coreboot need to do to support IPMI BMC? Depends on the IPMI BMC. If you're lucky, it works out of the box, and if you're unlucky, you have to implement undocumented BIOS interfaces. The easiest solution is to buy a card and try it, and if it doesn't work, reverse engineer it or try another card. Besides that, IPMI is a security nightmare (see the discussions on the linux-kernel mailing list about IPMI bypassing host network security). Regards, Carl-Daniel -- I do consider assignment statements and pointer variables to be among computer science's most valuable treasures. -- Donald E. Knuth -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
[coreboot] Hi...all
Hi all, Im want to know which IPMI BMC card is supported by Coreboot. Im building a server where i want both ipmi bmc manageability and coreboot. If anyone find.?pls let me know... Thanks -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
