How I can read fru information about cpu and dimm ?

How I can read fru information about cpu and dimm ?

[Alexander Raih]

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Hi guys, I am beginner in openbmc, cat you tell me a question.
In device tree I describe eeprom on i2c bus. I read this eeprom file in fs
and this file contained information only about
mainboard(vendor,model,s/n,p/n).  Please tell me how can I get fru
information about cpu, dimms ??

p.s. On another i2c bus I have 2 devices with addresses 0x70 0x71. I think
that it is mux pca9545 and on the one on channel of this mux locate eeprom.

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Re: How I can read fru information about cpu and dimm ?

[Andrei Kartashev]

Hello Alexander,

We can't tell you how to work with your hardware without any knowledge
about it's design.

Typically, CPU have no any EEPROM to read information from it. DIMMs
have special I2C channel, called SPD, but generally it is not connected
to BMC. I guess, you need to use some communication with the host to
request this information. But all this is common suggestion, you need
to know your hardware.

On Fri, 2021-09-10 at 13:10 +0300, Alexander Raih wrote:
> Hi guys, I am beginner in openbmc, cat you tell me a question.
> In device tree I describe eeprom on i2c bus. I read this eeprom file
> in fs and this file contained information only about
> mainboard(vendor,model,s/n,p/n).  Please tell me how can I get fru
> information about cpu, dimms ??
> 
> p.s. On another i2c bus I have 2 devices with addresses 0x70 0x71. I
> think that it is mux pca9545 and on the one on channel of this mux
> locate eeprom. 
> 

-- 
Best regards,
Andrei Kartashev