Linux Gets Ported To China's 32-bit "C-SKY" CPU Architecture
Written by Michael Larabel in Hardware on 19 March 2018 at 05:55 AM EDT. 36 Comments
HARDWARE --
While the Linux kernel maintainers are currently working on dropping support for some old CPU architectures, a new CPU architecture is looking to receive the mainline treatment.

Hangzhou C-SKY Microsystems is a Chinese producer of CPU IP licenses and a SoC platform. The company has developed their own 32-bit embedded CPU cores for use within cameras, set-top boxes, digital video recorders, printers, and other appliances / industrial devices. C-SKY is a member of the RISC-V Foundation but their current offerings do not appear based on this ISA.

C-SKY Microsystems has posted a set of 19 patches porting the Linux kernel to their CPU architecture. This Linux kernel port includes support for their two ABI versions and goes along with their work on getting the rest of the Linux toolchain working with upstream support on their hardware. There is a uClibc-NG port already for C-SKY while the GCC / Glibc / Binutils / QEMU support is still a work-in-progress.


The company's 4.16-based Linux kernel port to C-SKY comes in at about twelve thousand lines of new code. The code can be found via this patch series but as of writing no upstream Linux kernel developers have commented on the quality or the prospects of C-SKY support going to the mainline kernel.

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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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