ARM's security extensions are in the process of being bettered on Linux.
TrustZone is the marketing name for ARM's security extensions. TrustZone exposes two virtual processors with hardware access controls to let the application core switch between the two virtual states to avoid potentially leaking any information from one state/world to the other. TrustZone has been around going back to the ARMv6 days and there's been Linux support but it's largely been platform specific. Now, however, a generic TrustZone driver might finally come to the Linux kernel.
While there's been an ongoing discussion this week about delivering a $500 "open to the core" laptop that runs Ubuntu Linux and would be comprised of open-source software down to the firmware and Coreboot, announced last week was a high-end laptop that also aims to promote free/libre software. Though don't get out your wallets quite yet.
In the recent series on ARM single board computers I have covered the BeagleBone Black, MaRS, TI's OMAP5432 Board, the Radxa, a few of the ODroid ARM machines, and many more. On the Intel desktop side I've covered the NUC and MinnowBoard. I've learned that outright performance is faster on the Intel NUC than any ARM machine reviewed so far -- the tradeoff, of course, is cost. This time around we'll see whether the ASRock Q1900DC-ITX motherboard retains the high performance characteristic of an Intel board but also dips down to the low cost and lower power draw of the ARM world.
While the Raspberry Pi has always been cheap, the Foundation didn’t rest on their laurels with the Model A+ price. In fact, Google’s Eric Schmidt had a hand in making it cheaper…
While it would have been the easiest thing in the world to continue selling the Raspberry Pi at the same price, the charitable foundation behind the credit card-sized PC made it even cheaper with the recent release of the Model A+. Why did they abandon their already impressive $25 price? Eben Upton explains:
Last week we reported on AMD's plans for a complete user-space open-source HSA stack. Today they have finally delivered!
The last remaining component,. the HSA run-time library was open-sourced this afternoon on GitHub. This HSA library goes with the AMD GPU LLVM back-end to form a complete user-space open-source driver stack for HSA applications using kernels written using OpenCL C99. This code goes along with AMD's new "AMDKFD" kernel HSA driver that's still in the process of being mainlined. The AMDKFD driver could potentially appear in the Linux 3.19 kernel but probably won't be merged before Linux 3.20 if going through the DRM subsystem pull.
Open-source computers have so far lacked good graphics, but Gizmosphere’s new Gizmo 2 is an exception.
The Gizmo 2 is an uncased single-board computer that will sell for US$199. The computer can be used to build robots, electronics with large screens, or interactive computer systems that can recognize gestures or images.
Disk images are computer files of a disk volume or an entire data storage device, such as a hard drive, optical disk (e.g. DVD, CD, Blu-ray), tape drive, USB flash drive, or floppy disk. A disk image represents the content exactly as it is on the original storage device, including both data and structure information.