lowrisc-dev June 2015

lowrisc-dev@lists.lowrisc.org

4 participants
3 discussions

RISCV riscv-tools build issue lowrisc-chip/riscv-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64'

by Peter Van Doren

Hello: I'm looking at the RISCV as a possible solution for a customer ASIC. At this point, I'm just looking to build the FPGA and tools for the ZC706 board. I'm following the instructions on http://www.lowrisc.org/docs/tutorial/setup/ and have hit an error when building the RISCV tools. Spike is generated but riscv64-uknown-elf-gcc is not. The error message I'm receiving is: Links are now set up to build a cross-compiler from x86_64-unknown-linux-gnu to riscv64-unknown-elf. /home/pvandoren/Projects/RISCV/lowrisc-chip/riscv-tools/riscv64-unknown-elf/bin/as: unrecognized option '--64' gmake[3]: *** [build/version.o] Error 1 gmake[3]: *** Waiting for unfinished jobs.... gmake[3]: *** wait: No child processes. Stop. gmake[2]: *** [all-gcc] Error 2 gmake[1]: *** [all] Error 2 gmake: *** [build-gcc-newlib] Error 2 I'm running Ubuntu 14.04 64 bit and this same error occurs on both the RISCV project and the lowrisc project. Did something change in the repository that broke the system, or am I missing some other requirement? Thanks Pete

8 years, 5 months

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docker images

by Justin Cormack

As following the instructions to build the lowrisc toolchains gets quite tedious I decided to set up automated builds with docker: docker pull justincormack/docker-riscv This image contains spike, the riscv64-unknown-elf-* toolchain, etc, all in /usr/local/bin If you have docker installed docker run -i -t justincormack/docker-riscv /bin/bash will give you a shell with everything available in the path. The second image: docker pull justincormack/docker-riscv-linux also builds the linux cross toolchain riscv64-unknown-linux-gnu-* and vmlinux, and I will shortly add a root filesystem to it as well so it is ready to go to run riscv linux. If you want to rebuild the images yourself or modify things clone one of these https://github.com/justincormack/docker-riscv-linux https://github.com/justincormack/docker-riscv and do "docker build ." Justin

8 years, 5 months

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[lowrisc] seL4 on RISC-V is running SOS (Simple Operating System)

by Hesham ALMatary

Hi all, This is the second status update of the project (Porting seL4 to RISC-V). Please have a look at the blog post [1] for more details, and feel free to ask and/or comment. You feedback would be appreciated. [1] http://heshamelmatary.blogspot.co.uk/2015/06/sel4-on-risc-v-is-running-so... Thanks, -- Hesham

8 years, 6 months

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lowrisc-dev June 2015