Category: Embedded Diagnostics

Debugging Intel CATERR using Embedded ITP

Alan Sguigna

July 26, 2020
8:44 pm

In my webinar with the UEFI Forum, I demonstrated some of the utility of using JTAG functionality within BMCs to perform out-of-band debug. This is a tutorial on the coding practices to use the SED API.

PCI Express LTSSM stress using BMC-based Embedded JTAG/ITP

Alan Sguigna

July 19, 2020
4:27 pm

This past week, I did a webinar in collaboration with the UEFI Forum on JTAG-based UEFI Debug and Trace. This reviewed some of the often-used tools for low-level triage of difficult-to-diagnose, intermittent bugs. Near the end, I demonstrated the usage of technology running directly down on a BMC to perform low-level functions not achievable with firmware or OS-based applications.

It’s JTAG’s 30th Anniversary!

Alan Sguigna

February 15, 2020
3:29 pm

Today, February 15th, 2020, marks the official 30th Anniversary of JTAG. What a wild ride it has been – from its humble beginnings for detecting short and open circuits, it has evolved to be, in some ways, the most powerful and feared technology on the planet. How did we get here?

Benchmarking Yocto OpenBMC Builds on AWS Part 2: Arm64, Intel and AMD

Alan Sguigna

January 5, 2020
12:41 pm

In Part 1, I compared the performance and cost of Intel Cascade Lake versus AMD Rome. How does Amazon’s own CPU, Graviton, fare in this benchmark?

Benchmarking Yocto OpenBMC Builds on AWS Part 1: Intel Cascade Lake versus AMD Rome

Alan Sguigna

December 26, 2019
4:39 pm

As you know, I’ve done a lot of OpenBMC builds on my AMD Ryzen desktop PC, as well as my Surface Pro 6. I decided to tackle the same builds on Amazon Web Services (AWS), on virtual machines based on the Intel Cascade Lake CPU, as well as the AMD EPYC 7000. Which one is faster and cheaper?

Copying large files from Linux to Windows

Alan Sguigna

December 1, 2019
10:43 am

In my spare time, I was doing some OpenBMC Yocto builds on my Linux machines, and decided I wanted to copy these files over to my Windows PC. Little did I know how complicated this could be.

ASSET Autotestcon update and some BIG news….

Glenn Woppman

August 28, 2019
3:01 pm

ASSET is at Autotestcon this week meeting with all our defense and avionics customers, both defense contractors and DoD.

Securing the JTAG Interface

Alan Sguigna

July 21, 2019
4:10 pm

In a prior blog, I wrote about the JTAG specification’s upcoming 30th anniversary, and reflected on how it has evolved over the years, and the powerful use cases it can be put to. This week, we look at how to secure the JTAG interface, to prevent its abuse by bad actors.

Rediscovering the Wonder of JTAG

Alan Sguigna

June 30, 2019
4:22 pm

JTAG is coming up on its 30th anniversary. And some would say it’s older than that. As I prepared for doing an introductory presentation on this amazing technology, I got a chance to reflect on how useful it has become, and what the next 30 years might be like.

Unboxing Boundary-Scan Test Part 2: Scan Path Verify

Alan Sguigna

January 6, 2019
2:24 pm

This week, I looked at some of the main test actions that apply to the ScanLite board: in particular, the Scan Path Verify action.

Category: Embedded Diagnostics

Debugging Intel CATERR using Embedded ITP

PCI Express LTSSM stress using BMC-based Embedded JTAG/ITP

It’s JTAG’s 30th Anniversary!

Benchmarking Yocto OpenBMC Builds on AWS Part 2: Arm64, Intel and AMD

Benchmarking Yocto OpenBMC Builds on AWS Part 1: Intel Cascade Lake versus AMD Rome

Copying large files from Linux to Windows

ASSET Autotestcon update and some BIG news….

Securing the JTAG Interface

Rediscovering the Wonder of JTAG

Unboxing Boundary-Scan Test Part 2: Scan Path Verify

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