ASPEED AST2300 LINUX DRIVER

I said ‘I’d prefer to have BMC’s with simpler capabilities to ensure robust response times’ which needs anyone reading to infer that not running eBPF programs in full-Linux or having a simpler capabilities means a dedicated RT kernel is necessary to ensure robust response times. I wonder how hard it would be to pull in the openbmc layer? Posted Apr 12, At the top comes a machine-specific layer e. It may only be a start, and only support one BMC vendor, but that itself is still noteworthy progress in comparison to the unappealing security and software-freedom issues that plague so many systems via the IPMI framework. He noted that more development tools are being ported to the distribution, along with the Chef provisioning system and additional monitoring programs. Furthermore, as Matthew Garrett outlined quite memorably at linux.

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Now, if we’re going by what I wrote: Whether that’s done in by an RT kernel or multi-user, pre-emptive multitasking kernel is something I wanted to leave open for someone else to say what and why they chose that option. But the biggest question was whether Facebook would be pushing any of its OpenBMC work into the mainline kernel. Posted Apr 13, 1: I said ‘I’d prefer to have BMC’s with simpler capabilities to ensure robust response times’ which needs anyone reading to infer that not running eBPF programs in full-Linux or having a simpler capabilities means a dedicated RT kernel is necessary to ensure robust response times.

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The first is a common layer meta-openbmc that defines all of the packages used in OpenBMC. I’d feel a lot safer administering servers via BMC if I knew that the BMC’s software llinux open and easily updated with security linyx.

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I’m going to have to power that sucker down by physically unplugging the power cords and hope the BMC comes back, and I can’t do that until I schedule a visit to the data centre. If this mattered and I’d dug in for a fight behind a contrary opinion, the response didn’t cite anything convincing beyond some notion of ‘good engineering’ — but the tone isn’t likeable and won’t win me to the responder’s cause.

He also said that Facebook has started work on a BMC development board that will hopefully serve as a low-cost entry point for interested developers.

But BMCs almost invariably ship with a proprietary IPMI implementation in binary-blob form though, in most cases, that blob is running on Linuxwhich is limited in functionality to what the vendor chooses. The next step is open software to interface with OpenBMC to do things like rack-level power management.

OpenBMC allows Facebook to run more recent kernel releases than one would typically find in a vendor-provided IPMI stack; the latest deployments use 4.

What a world where BMC’s aren’t a security threat on nearly every system. Please consider signing up for a subscription and helping to ast23000 LWN publishing.

The system uses the U-Boot bootloader and asg2300 embedded Linux distribution created with Yocto. Posted Apr 13, Posted Apr 13, 4: That’s a stretch, expecially when I intended to convey other meanings, including things like under-committing resources to ensure spare overhead.

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We have rewritten the ASpeed SoC kernel pretty much from scratch and cleaned up a bunch of the drivers, made it device-tree based etc Fang then outlined the process of porting OpenBMC to a new board. While it is intended as a convenience for those who must manage dozens or hundreds of servers in a remote facility, IPMI has been aspeee out for its potential as a serious hole in server security.

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Once the BMC has been compromised, the attacker has direct access to essentially every part of the server. It was first deployed in with the Wedgea “top-of-rack network switch” design from OCP, although Fang noted that, from a design standpoint, the team looked zst2300 the switch as “just another server.

Furthermore, as Matthew Garrett outlined quite memorably at linux.

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On top of that comes a general BMC layer that enables the bootloader, C library, and kernel recipes for a particular SoC vendor at present, meta-aspeed. Usually we think zspeed is a net positive but I’m not always so sure, I’ve seen plenty attempts at HA actually cause more outages than they ever prevented, and one of the goals of IPMI is to increase service uptime by allowing you to reboot servers quickly when the OS fails.

The Yocto build includes three layers. He showed several ats2300 recipes which are available in the session slides [PDF]including a GPIO configuration, an lm-sensors configuration, and a libpal example.

Posted Apr 26, 8: The session ended with a brief question-and-answer period. The music fan in me is mildly disappointed, however, that they didn’t call the project “Run-BMC”. OpenBMC, a distribution for baseboard management controllers. I have a server km away whose Liux is hung and cannot be restarted even with a hard reboot command from ipmitool.

The resulting distribution is called OpenBMC.