What ICC registers does "IccAdvancedSetupDataVar" UEFI variable changes?

[bohosul]

My PC freezes and crashes randomly and I think it's related to the system's clock configuration (it's a long story, so I won't tell it here).

IccAdvancedSetupDataVar is an 8-byte long UEFI variable involved in setting some bits at certain ICC registers, but I couldn't find any documentation online about what it exactly does. I only found the ICC offsets in an Intel leaked document, but I couldn't find any explanation of how IccAdvancedSetupDataVar comes into play.

What offsets in this variable are related to what offsets in the Integrated Clock Controller (accesed through PCH sideband interface)?

I have a 300-Series PCH.

[RamyerM_Intel]

Hello bohosul, 

Upon reading your inquiry, It is better if you can share us more details so we can better assist you as your question might be pertaining to an old technology. Please share the following details:

1. I understand that you do not want to share the whole story of why you think the crash is related to the system's clock configuration, however, if you can give us a little bit more information, we would really appreciate it. 
2. Please download and run our Intel® System Support Utility located at this link: https://www.intel.com/content/www/us/en/download/18377/intel-system-support-utility-for-windows.html.
3. After running it, you will be given an option to save the logs to a text file, please do so and attach the file on your reply.
4. About this leaked document that you mention, can you send us the link so we can check it for you?
5. Are there any error message showing when the crash occurred?

Ramyer M. 

Intel Customer Support Technician 

[RamyerM_Intel]

Hi bohosul, 

I am just following up about the information we requested. Please share it with us so we can figure out what other steps we need take. Thank you. 

Ramyer M. 

Intel Customer Support Technician 

[RamyerM_Intel]

Hi bohosul, 

As we have not heard a response from you in the past days, we will proceed in closing this thread. If you need any additional information, please submit a new question as this thread will no longer be monitored.

Ramyer M.

Intel Customer Support Technician