couple questions for OpenBMC

[Nancy Yuen]

On Thu, Jan 17, 2019 at 2:34 AM John Wang <wangzqbj at inspur.com> wrote:

> On Thu, Jan 17, 2019 at 3:52 PM Brenden Lai <Brenden_Lai at jabil.com> wrote:
> >
> > Hi
> >
> > I have couple questions about OpenBMC .
>
> >
> > 1.if I decide use OpenBMC solution , Does it mean I should put all BMC
> source code on github including some commercial software  ?

I don't know what you mean by commercial software.  In OpenBMC we strive to
use open source software.

To build OpenBMC you only need to check out one repo
github.com/openbmc/openbmc and invoke the bitbake commands to build for a
supported platform.  The repo page has build instructions on it  The
recipes in openbmc/openbmc will download the necessary package sources from
other online sources and invoke the build commands for each of those
packages.  The downloaded packages are cached locally.  It's also possible
to create a local mirror of downloaded packages for your team to use.



>
> >
> >
> > 2.Are there any tutorial or /document  for using dbus within OpenBMC ?
> please refer to this link [https://github.com/openbmc/sdbusplus] for
> documentation and examples.
> or you can use busctrl to find out it.
>
> example:
>     busctl tree xyz.openbmc_project.LED.GroupManager
>     busctl introspect   xyz.openbmc_project.LED.GroupManager
> /xyz/openbmc_project/led/groups/enclosure_fault
>
> > 3.Why there is no release note after V1.05 ?  Will the coming release
> attach release note ?
>

The tags you see are just random tags points, not a coordinated release.
We are in the middle of testing the 2.6 official release at the moment.  It
will be done early February and it will contain release notes.  You can
search this mailing list for release activities and also the meeting
minutes from the release planning workgroup are here
<https://github.com/openbmc/openbmc/wiki/Release-Planning>.


> >
> >
> > 4.I know openBMC is using some file text to represent  device (LED ,
> sensor)
>
> Linux uses device tree to describe the hardware component,you can
> refer to https://elinux.org/Device_Tree_Usage
> This link[https://github.com/openbmc/docs/blob/master/LED-architecture.md]
> tells you how openbmc controls led.
>
> Can be roughly described:
>           phosphor-led-manager(strategy) -->
> phosphor-led->sysfs(action)  --> linux led subsystem
>
>  linux led subsystem :
>
> https://github.com/openbmc/linux/blob/dev-4.19/Documentation/leds/leds-class.txt
>
> >but I am curious about how this files bind to real device ?
> >    Where is the low level operation relate code ?
>
>
> https://github.com/openbmc/phosphor-led-sysfs/blob/e0844ff447abad01fa6f902caab3839336d1518d/physical.cpp#L131
>
> >
> >
> > Thanks -Brenden
> >
> >
> >
> >
> >
> > Brenden Lai
> > SR. BMC Design Engineer
> > E&I, Jabil Design Services
> >
> >
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ozlabs.org/pipermail/openbmc/attachments/20190117/3dc2dbc5/attachment-0001.html>