Ports/riscv64: Difference between revisions

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* [[Ports/riscv64/QEMU|QEMU]]
* [[Ports/riscv64/QEMU|QEMU]]


We build [[Regular/riscv64|Regular Images]] (see also: [[Regular]]), for these platforms. Check out [[Regular/riscv64]] for download links and the platform page for the quick start/installation instructions.
We build [[Regular/riscv64|Regular Images]] (see also: [[Regular]]) for these platforms. Check out [[Regular/riscv64]] for download links and the platform page for the quick start/installation instructions.


Also, for Unleashed and QEMU, [[Simply Linux 9]] was released, but those images have somewhat lost their relevance.
Also, for Unleashed and QEMU, [[Simply Linux 9]] was released, but those images have somewhat lost their relevance.

Revision as of 14:33, 9 November 2021

RISC-V

RISC-V is an open and free instruction set architecture (ISA). The RISC-V ISA specifications are licensed under a Creative Commons license (CC BY 4.0). Anyone could get the final versions of the user-level ISA specifications and drafts of the compressed and privileged ISA specifications.

Another key feature of the RISC-V architecture that it is scalable and allows multiple implementations. The minimal specification has the commands to store and load, jump and integer arithmetic. It supports the 32-, 64- and 128-bit register sizes: "RV32I, RV64I and RV128I" ("I" stands for integer). This Linux port runs on "RV64IMAFDC" or "RV64GC" ("G" == "IMAFD"):

  • I - Integer and basic instructions
  • M - Multiply and divide
  • A - Atomic operations
  • F - Single precision floating point
  • D - Double precision floating point
  • C - Compressed instructions

Sisyphus port

Sisyphus port for riscv64 (RV64GC) architecture is under development since early 2018. The following platforms are supported:

We build Regular Images (see also: Regular) for these platforms. Check out Regular/riscv64 for download links and the platform page for the quick start/installation instructions.

Also, for Unleashed and QEMU, Simply Linux 9 was released, but those images have somewhat lost their relevance.

Repository

RPM/SRPM repository: http://ftp.altlinux.org/pub/distributions/ALTLinux/ports/riscv64/Sisyphus/

As apt-rpm sources.list: 

rpm [sisyphus-riscv64] http://ftp.altlinux.org/pub/distributions/ALTLinux/ports/riscv64 Sisyphus/riscv64 classic
# rpm [sisyphus-riscv64] http://ftp.altlinux.org/pub/distributions/ALTLinux/ports/riscv64 Sisyphus/riscv64 debuginfo 
rpm [sisyphus-riscv64] http://ftp.altlinux.org/pub/distributions/ALTLinux/ports/riscv64 Sisyphus/noarch  classic

Yandex mirror (better download speeds): 

rpm [sisyphus-riscv64] http://mirror.yandex.ru/altlinux/ports/riscv64 Sisyphus/riscv64 classic 
# rpm [sisyphus-riscv64] http://mirror.yandex.ru/altlinux/ports/riscv64 Sisyphus/riscv64 debuginfo
rpm [sisyphus-riscv64] http://mirror.yandex.ru/altlinux/ports/riscv64 Sisyphus/noarch  classic

The packages are build on a separate girar instance, similar to Git.alt. SiFive HiFive Unmatched are used as build nodes.

The "chasing builder" approach is used: as soon as a task is committed to the primary Sisyphus repository, special robot creates a similar task for sisyphus_riscv64. This means that there is no need to do anything special for building packages for riscv64: build for Sisyphus. The tasks are approved manually. The resulting packages are available in the repository on the same day or on the next day most of the times.

We don't rebuild all the Sisyphus packages due to the limited need and resources. If you need some package is available in Sisyphus but is missing in sisyphus_riscv64, please fill a bug or write to the mailing list: riscv-devel@lists.altlinux.org.

Reporting issues

For tracking bugs and issues we use ALT Linux Team bugzilla -- http://bugzilla.altlinux.org (see also: BugTracking).

  • For issues in packages, choose product: Sisyphus, component: name of the package, and set "hardware" field to riscv64.
  • For general image issues, choose product corresponding to the image type (e.g. Regular, or Simply Linux).

IMPORTANT:

  • Set Hardware to riscv64 (on the right at the top of the bug creation form)
  • Assign the bug to Ivan Melnikov (iv at altlinux.org).

Useful links