DCI(Direct Connect Interface)

What is DCI(Direct Connect Interface)

• Debug tool
• How to download
• Hang or Black screen
• Reference

DCI USB 3.0 Debug Class，要加此其硬體上須如何配合等等

• 首先就是Platform 需要支援, 再來就是需要將待測機台DCI  debug相關的token 開啟(BIOS & ME)
• 相關token可參考DOC#626623
• Debug 部分通常是用來針對CPU hard hang的現象(因為此時BIOS port 80h debug log通常會抓不到東西)或是用以觀察CPU C state , 若是BSOD則建議使用 Windbg 進行分析比較有效率
  而CPU hard hang通常比較發生在CPU ES sample 階段, QS CPU後的階段通常比較少遇見
• CCA (藍盒子)價格部份之前是390美金 需要再另外確認

Debug tool

DCI(Direct Connect Interface)

How to download

• NOTE:

To access this download You must first register with the Intel® System Bring-up Toolkit NDA (formerly Intel® System Studio NDA)
Refer to #631579 and #616675

Hang or Black screen

Command for collect crashlogs.

In C:\cscripts, enter “start_adl.bat”. -> start cscripts

itp.devicelist() -> Check DCI oob device on the list.

                              

itp.status() -> Check CPU status.

itp.halt() -> Freeze CPU.

itp.go() -> Resume CPU.

crashlog.is_enabled() -> Check crashlog function is ready or not.

crashlog.parse() -> Capture crashlog.

crashlog.trigger() -> Trigger a fake crashlog.

                                -> Do not execute it before capture fail log.

Reference

Intel® Platform Closed Chassis Debug User Guide

Intel® Direct Connect Interface (Intel® DCI) Enabling Guidance for OEMs

Intel® DCI enabling