This port has been tested on an ARMv8-A 64-bit hardware development platform, code-named “Juno”, available from ARM for lead and ecosystem partners.
The Linaro ARMv8-A reference software stack combined with the ARM Development Platform (ADP) provides the ARM ecosystem with a foundation to accelerate 64-bit Android availability on silicon. ARM partners now have access to a 64-bit and 32-bit AOSP file system, together with a broad range of supporting material including the ARMv8 Fast Models, open source toolchain from Linaro and supporting documentation.
“The ARM ecosystem is rapidly preparing for the benefits a 64-bit ARM architecture will bring to devices starting this year,” said James McNiven, general manager of systems and software at ARM. “Our collaboration with Linaro will enable our partners to create devices that will drive the best next-generation mobile experience on 64-bit Android operating systems, while also providing full compatibility with today's 32-bit mobile ecosystem that is optimised on ARM-v7A.”
The Linaro 14.06 release includes a 64-bit primary/32-bit secondary binary image and source code based on the Linaro Stable Kernel (LSK) 3.10 for Android, compiled with GCC 4.9 and tested on both the ARMv8-A 64-bit hardware platform and ARMv8-A Fast Models. The AOSP is based on the Open Master snapshot downloaded on June 1st with HDMI drivers loaded as modules. The release is built with the Android real-time (ART) compiler as the default virtual machine with the same source supporting both 32- and 64-bit user spaces on hardware and virtual platforms. Peripheral and advanced power management support plus several accelerations will not be available in this release, but will follow in future releases at monthly intervals.
“We have been using ARM Fast Models to develop 64-bit ports for AOSP for a long time and it is testament to the quality of our collaborative engineering that we have delivered them running on the ARMv8-A hardware platform so quickly,” said George Grey, Linaro CEO.
The ARMv8-A hardware development platform