Linux 3.5 Release

Linus Torvalds has announced the release of Linux Kernel 3.5: Subject: Linux 3.5 released Ok, not a lot happened since -rc7. There’s a number of MIPS commits (for some reason MIPS has had a horrible track record with the -rc time schedule, I suspect I should just stop pulling late in the game), but most of the rest is pretty small. A couple of dm/md fixes, some gma500 work, make kgdb ‘dmesg’ command work again, some networking fixes, some xfs and cifs noise, yadda yadda. About 50% of the patch is actually the SPEAr clock name renaming that is just some search-and-replace. … Linux 3.4 brought updates to Btrfs file system, some new Intel, AMD and NVidia GPU drivers, X32 ABI, perf tool improvements and support for Yama security module and QNX6 file system. Linux 3.5 brings the following key changes: ext4 metadata checksums:  Ext4 has added the ability to store checksums of various metadata fields, which allows to check …

Gumstix TurtleCore Expansion Board for iRobot Create

Last month, Gumstix announced the TurtleCore expansion board for iRobot Create Programmable Robot, featuring 3 USB ports, several male-header pins with GPIO access, as well as standoffs and screws to support the TurtleCore in the Create cargo bay.. The TurtleCore is a baseboard for TI OMAP3 and Sitara based Overo COMs or Overo STORM series of COMs that replaces the Command Module on iRobot Create to provide a more flexible and powerful solution. Overo COMs have very good Linux support (OpenEmbedded) with source code, tools and documentation available, including support for the Robot Operating System (GumROS) for high level programming. They released the hardware early so that the community could work on the software, and there have been some good progress as you can see from the video below. You can already download the schematics and PCB layout file, but the software and instructions do not appear to be available publicly yet. The TurtleCore is available for $89, Gumstix Overo …

AnDevCon IV Classes and Workshops Schedule

AnDevCon is a technical conference for software developers building Android apps, and the fourth Android developer conference will take place in San Francisco on December 4-7, 2012. The organizers have already listed the schedule, including details about the workshops and classes which will take place at the conference. The 4th of December is reserved for workshops, and the other 3 days can be spent on shorter classes. All workshops will provide sample code, as well as most classes, excluding the overview session and business related sessions. There will be three full day Android workshops: Android Development Boot Camp – Hands-on introduction to Android application development and the tools essential to the process. Beyond an introduction to the basics, this workshop also covers some of the common hurdles met with development, and how to overcome them. You will also have the opportunity to build an Android app of your own where you can apply what you learn in the workshop. Building …

Nightly Builds for AllWinner A10 U-boot, Linux Kernel and Hardware Packs

Kent of SCUZ Technologies has graciously provided a build machine (Intel Xeon E5645) for Rhombus Tech (and possibly other) open source projects, and I’ve setup nightly build scripts for AllWinner A10 kernel, bootloader (u-boot) and hardware packs for Mele A1000 (HDMI), Mele A1000 (VGA), A10 mini PCs (using MK802 script.bin) as well as a server build for Mele A1000. The nightlies are built using  a10-hwpack-bld.sh script which is available in github, and can be downloaded from http://dl.linux-sunxi.org/nightly/ The resulting files are copied to a dropbox folder, until a better solution is found. For each build, you’ll find the following files : u-boot.bin – U-boot sun4i-spl.bin – U-boot SPL uImage – Kernel image product_YYYY.MM.DD.log (e.g. mele-a1000_2012.07.20.log) – The build logs whether the build succeeds of fails. One per hardware pack. product_hwpack_YYY.MM.DD.log ( e.g. mele-a1000_hwpack_2012.07.20.7z) – The hardware pack with the kernel, u-boot which can be used with a1x-media-create.sh script to create an SD card image or make a bootable SD card. …

How To Use Putty with an SSH Private Key Generated by OpenSSH

I have access to a remote server where I am only allowed to login via SSH with a key, and I can’t add an extra key by myself, as described in “No Password SSH” post. The private key (RSA) has been generated with ssh-keygen in Linux, and I can login from Linux without issue. This morning, I wanted to do the same with Putty in Windows XP, so I just copied the private key to Windows and loaded it in Putty, but it failed: After a few minutes of research, I found my answer on UbuntuForums, and the reason it fails is because Putty does not support openssh keys, but uses its own format. Here’s what I had to do: Convert OpenSSH private key to Putty private key with Putty Key Generator (puttygen) Start puttygen, and click on Conversions->Import key, then click Browse and select the private key generated with openssh (e.g. id_rsa). Then click on Save private key (e.g. id_rsa_putty.ppk) …

TP-Link WR703N – $23 Hackable openWRT Wi-Fi 802.11N Router

TP-Link WR703N is a tiny 802.11N 150 Mbps Wi-Fi router smaller than a credit card (5.7 x 5.7 cm) and 1.8 cm thick based on Atheros AR7240 processor with 4 MB flash and 32 MB RAM. It costs just above $20 US and can be hacked with openWRT. It features one USB host connector that allows you to connect USB devices (USB flash drive, printer…) to it. TL-WR703N Specifications: Atheros AR7240 CPU @ 400Mhz (MIPS24k core) Atheros AR9331 Chipset (integrated wireless) 10/100 Mbit Ethernet port 802.11 b/g/n 150Mbps 3G support via external USB dongle 4 MB flash memory 32 MB RAM USB 2.0 port micro-USB port for power Dimension – 5.7 x 5.7 x 1.8 cm All you need is a USB to TLL board to access the serial console, open the box to access the serial pins (TP_IN and TP_OUT) and follow the instructions on openWRT website to convert it into a Linux router. You can do all sort …

Building the Linux Kernel 3.0.8 For Telechips TCC8925 mini PCs (CX-01, Z900, TizzBird N1…)

Yesterday, we got Linux kernel 3.0.8 source code from Telechips, as well as some files related to Android 4.0 (Webkit + OMX). Today, I’ve had a look at the kernel source code and found a few very interesting things. First let’s get the code from github: Good news! The code for the latest Telechips TCC892X is present in arch/arm/mach-tcc892x, and there is support for 3 types of boards: board-m805_892x – TCC8923 M805 board board-tcc8920 – TCC8920 evaluation board board-tcc8920st – TCC8920 STB evaluation board TCC8920 STB evaluation board appears to be relevant to products such as Diyomate A6, but if it’s also used for TCC8925 HDMI Dongle such as CX-01 mini PC, Zero Devices Z900 or ValuePlus TizzBird N1. Now let’s have a look at the default config directory for arm (arch/arm/configs): Nice! tcc8925st_dongle_defconfig and tcc8925st_donglehs_defconfig look particularly interesting! A quick comparison shows that the only difference is that tcc8925st_donglehs_defconfig sets CONFIG_HDMI_DONGLE_CLOCK_HIGH_SPEED=y. Looking further in the source code: So tcc8925st_dongle_defconfig configuration …

ARM TechCon 2012: Software & System Design Schedule

ARM Technology Conference (TechCon) 2012 will take place on October 30 – November 1, 2011, in Santa Clara, and UBM Electronics has already posted the detailed schedule for the event. The first day (October 30) will be Chip Designs day  and the other 2 days will focus on Software & System Design. Even if, like me, you are not be able to go there, it’s still interesting to know what will be discussed at the conference, to have a better idea where ARM is going, and what new technologies and/or development techniques are (or will become) available. There will be around 70 sessions categorized in 15 tracks: Android / Open Source –  Development tools, middleware for native application development, and optimized drivers for Android, Linux, FreeRTOS etc … Compute Platforms – Development and implementation of standards and specifications, from board/module design to consumer and server designs Developing / Debugging – Programming and debugging for ARM, power optimized software across multicore …