Re: [Freeipmi-devel] IPMI Serial Interface (Terminal Mode) PowerPC

[Al Chu]

Hi Deepak,

> Layer 1 -> My Application
> Layer 2 -> libfreeipmi
> Layer 3 -> Terminal Mode Serial Interface Driver (Linux)
> Layer 4 -> Serial Driver (MPC8560 SCC)
> 
> Is the above stacking correct as per FreeIPMI framework or I haven't 
> understood the things?

Yup.  You're correct. However (see below)

> If it is correct then is Terminal Mode Serial Interface Driver (Linux) 
> available with
> freeIPMI and what all is required to customise it for using MPC8560 serial 
> driver(SCC)?

Currently, FreeIPMI does not have a serial driver "integrated" within
the library.  i.e., I can do something like this (pseudo-code):

ipmi_open_driver(LAN);
ipmi_cmd_power_control(OFF);
ipmi_close_driver(LAN);

put you can't do:

ipmi_open_driver(SERIAL);
ipmi_cmd_power_control(OFF);
ipmi_close_driver(SERIAL);

libfreeipmi could be used to help build the IPMI packets you need for
serial communication.  However, some additions would be needed for
helping to build the headers/trailers for serial IPMI packets.  I'm not
sure how much work would entail.  I looked at the serial section of the
IPMI spec for the first time about 10 minutes ago :-O

> If it is not available where can I get the same?

I'm not sure if OpenIPMI's libraries support serial, but it may be worth
checking out.

Al


On Mon, 2007-06-25 at 14:45 +0630, Deepak Gaur wrote:
> Hi all
> 
> I have task of making software for following hardware interface
> 
> PowerPC MPC8560 SCC ------UART----IPMI Serial Interface(Terminal 
> Mode)---->BMR-AVR BMC
> 
> As I am not much aware about IPMI I shall be grateful if anyone can clear my 
> doubts
> 
> Software Available
> 
> OS : linux kernel > 2.6.17 on Host processor 
> Driver : SCC driver (Serial Driver) available with Linux Kernel
> Host processor : MPC8560 (ppc)
> 
> The host processor is MPC8560 (Motorola ppc) and its Serial Communication 
> controller is
> connected to BMC(BMR-AVR) over Serial Interface. The mode required is 
> Terminal Mode as
> defined in IPMI Specs 1.5.
> 
> My task is to write a user mode application in linux which issues commands 
> over this
> serial interface to BMC and get the responses. 
> 
> My doubt is regarding software stacking of the various drives and my 
> applicatiom .
> 
> Layer 1 -> My Application
> Layer 2 -> libfreeipmi
> Layer 3 -> Terminal Mode Serial Interface Driver (Linux)
> Layer 4 -> Serial Driver (MPC8560 SCC)
> 
> Is the above stacking correct as per FreeIPMI framework or I haven't 
> understood the things?
> 
> If it is correct then is Terminal Mode Serial Interface Driver (Linux) 
> available with
> freeIPMI and what all is required to customise it for using MPC8560 serial 
> driver(SCC)?
> 
> If it is not available where can I get the same?
> 
> Thanks in advance,
> 
> with regards,
> 
> Deepak Gaur
> 
> 
> 
> 
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-- 
Albert Chu
address@hidden
925-422-5311
Computer Scientist
High Performance Systems Division
Lawrence Livermore National Laboratory