Cobham Gaisler is a world leader in embedded computer systems for harsh environments, with footprints in many parts of the solar system. We provide the full ecosystem to support digital hardware design for mission critical System-on-a-Chip solutions. The IP cores and development tools support processors based on the SPARC and RISC-V architectures. In addition to this, a number of standard components are available.


Before you use the GPL version of LEON3/GRLIB, please make sure that you read and understand the GPL license.

Please also see the GRLIB IP Library Overview, GRLIB IP Library Microchip and GRLIB IP Library - Xilinx support pages.

Answers to common licensing questions can be found at our license FAQ section and technical questions on GRLIB-GPL can be posted at the Discourse.

LEON3 and GRLIB IP Library File
LEON3/GRLIB source code grlib-gpl-2020.4-b4261.tar.gz   (Changelog.txt) 15-Dec-2020
GRLIB User's Manual grlib.pdf 15-Dec-2020
GRLIB IP Cores Manual grip.pdf 11-Dec-2020
LEON/GRLIB Configuration Guide guide.pdf 15-Dec-2020
Excel sheet for SOC area estimation grlib_area.xls 11-Dec-2020
Additional GRLIB components*    
GRFPU netlists for Xilinx and Altera grlib-netlists-gpl-2020.4.tar.gz (license) 15-Dec-2020
FPGA bitfiles for GRLIB template designs grlib-bitfiles-gpl-2020.4.tar.gz 15-Dec-2020

 *To install additional components, untar the packages inside GRLIB

Documentation File
SPARC V8 Manual sparcv8.pdf -
SPARC V8 System V ABI sparc-abi.pdf -
Sun SPARC Assembler Manual 816-1681.pdf -