Browsing All Posts filed under »Software«

Compile Linux kernel 3.2 for ARM and emulate with QEMU

March 31, 2012

84

This is a tutorial to: 1. Get Linux kernel 3.2 source code 3. Configure and compile for Versatile Express ARM Cortex-A9 platform 4. Prepare and create a ramdisk using initramfs schema 5. Emulate kernel boot and ramdisk execution using QEMU

FOSDEM 2012 videos

March 18, 2012

0

The videos of the last Free and Open source Software Developers’ European Meeting 2012 have been uploaded. The most interesting videos for me are the following: ARM BoF: state of the ARM architecture porting of various Linux distros (54:40 video) Debian secrets: useful information to get started on using or developing Debian (41:24 video) Multiarch: why […]

Linking a binary blob with GCC

February 19, 2012

5

There’s a simple way to include binary data inside an executable, when using a GCC toolchain. The trick relies on using objcopy to transform the binary blob of data into an object file that can be linked. In this example I am creating a binary blob of 16 bytes of random data in file “blob.bin“: […]

2012 Embedded Linux Conference Schedule

January 23, 2012

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For anyone interested, the schedule for the next Embedded Linux Conference, held in San Francisco bay on the 15-16-17 of February, is out: 2012 Embedded Linux Conference | Schedule | Linux Foundation Events.

Encrypted Linux on USB key

January 3, 2012

16

In this post I suggest a way to have an encrypted Linux installation on a USB key, which to me is useful when I travel and I want to securely access the functionality that desktop Linux offers. I want to have no fear that what I take with me will be stolen, even if what I take with me is a full Linux OS, together with my data and maybe some online passwords saved in the browser.

2011 in review

January 1, 2012

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The WordPress.com stats helper monkeys prepared a 2011 annual report for this blog. Here’s an excerpt: The Louvre Museum has 8.5 million visitors per year. This blog was viewed about 170,000 times in 2011. If it were an exhibit at the Louvre Museum, it would take about 7 days for that many people to see […]

Disabling system beep in Linux

December 13, 2011

0

I noticed that on my Debian Testing installation the system beep is active, even though my computer has a nice and common integrated sound card. To disable the annoying beeps at start-up and shut-down, the common solution is to blacklist the “pcspkr” module, which is responsible for the beeping noise. I noticed that most advices […]

ELCE 2011 videos are out

November 8, 2011

1

As usual, FreeElectrons hosts the videos of the Embedded Linux Conference Europe, together with the presented material: Embedded Linux Conference Europe 2011 videos Here is a personal selection of videos that I find most interesting: Linus Torvalds, Alan Cox, Thomas Gleixner, Paul McKenney moderated by Lennart Poettering Kernel Developer Panel Video (55 minutes): full HD […]

C

October 18, 2011

0

I’ll probably never be as good, I’ll certainly never stop trying. The things we take for granted today are the revolutions of yesterday.

Google 2-step authentication

October 16, 2011

4

Google has recently implemented two-factor authentication for user accounts. After reading its description and watching the explanatory video (here is the guide) I activated this option as soon as I could. It really is as user-friendly as it gets, for the security it gives. Since I own an Android phone I also activated the ability […]

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