Category: Software Debug and Trace – ARM

The MinnowBoard Chronicles Episode 41: Hacking the Kernel, Part 2

Alan Sguigna

December 23, 2018
4:17 pm

Rejoice, Linux kernel newbies. Last week, I hacked an Ethernet driver in the Linux kernel, but the hack didn’t work; it turns out that the driver I chose isn’t used in my native Linux image on my PC. This week, I tackled the problem again, with success! And if I can do it, you can, too.

The MinnowBoard Chronicles Episode 40: Hacking the Kernel, Part 1

Alan Sguigna

December 10, 2018
7:36 am

This week, I decided to do a deeper dive into the Linux kernel, actually compiling and installing a new version on my PC. I’m in hacker’s paradise.

Updated eBook on UEFI Debugging

Alan Sguigna

November 13, 2018
2:33 pm

You can always count on Larry Traylor to crank out useful new content for engineers. This time, he’s updated our Application Note on UEFI Debugging using SourcePoint on Intel Platforms.

The MinnowBoard Chronicles Episode 35: Linux kernel debug & trace

Alan Sguigna

July 1, 2018
8:31 pm

After last week’s distraction, I do a deep dive into the debug & trace tools that are built into the Linux SDK.

The MinnowBoard Chronicles Episode 33: More Yocto image builds, and Linux debug

Alan Sguigna

June 10, 2018
3:41 pm

In this week’s episode, I build some additional Yocto Linux images, beyond simply the minimal base image. Then I start having some fun debugging them.

The MinnowBoard Chronicles Episode 32: a successful Yocto image install

Alan Sguigna

May 13, 2018
5:00 pm

In Episode 31: First attempts to debug the Linux kernel and prior episodes of the MinnowBoard Chronicles eBook, you can see how I struggled unsuccessfully to install a Yocto image I built onto the MinnowBoard. Well, this week, I got it to work! Here’s the trick.

Facebook OpenBMC At-Scale Debug at the OCP Summit

Alan Sguigna

April 15, 2018
6:05 pm

ASSET gets a nod at the Open Compute Summit for our leadership in At-Scale Debug.

Embedded API library for at-scale JTAG-based hardware-assisted debugging

Alan Sguigna

February 14, 2018
7:31 am

Out-of-band access between on-board BMCs and CPU JTAG chains is now a de facto implementation on hyperscale servers manufactured by the ODMs. This article describes the BMC firmware library within our ScanWorks Embedded Diagnostics (SED) product used to run diagnostics at-scale.

Spectre, Meltdown, and embedded MSR access

Alan Sguigna

February 5, 2018
6:52 am

In the article JTAG and run-control API in BMCs for at-scale debug, I described how embedding the Intel ITP run-control library down on a service processor provides for a rich set of target-based functions for debug forensics. How might this apply to reading MSRs, such as the ones created to address Spectre and Meltdown.

The MinnowBoard Chronicles Episode 30: using all 16 threads on my Ryzen?

Alan Sguigna

January 14, 2018
5:34 pm

In my last blog, I observed that running Yocto Linux builds with all 16 threads of my new AMD Ryzen 7 1700X machine would always crash. Running under VirtualBox and only using one thread always worked; but it took seven hours. Could I achieve a compromise?

Category: Software Debug and Trace – ARM

The MinnowBoard Chronicles Episode 41: Hacking the Kernel, Part 2

The MinnowBoard Chronicles Episode 40: Hacking the Kernel, Part 1

Updated eBook on UEFI Debugging

The MinnowBoard Chronicles Episode 35: Linux kernel debug & trace

The MinnowBoard Chronicles Episode 33: More Yocto image builds, and Linux debug

The MinnowBoard Chronicles Episode 32: a successful Yocto image install

Facebook OpenBMC At-Scale Debug at the OCP Summit

Embedded API library for at-scale JTAG-based hardware-assisted debugging

Spectre, Meltdown, and embedded MSR access

The MinnowBoard Chronicles Episode 30: using all 16 threads on my Ryzen?

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