Pavel Pisa
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In the fact, there has been the cover letter on the paper top, but it is of less interest to me. On the other hand, it lists included ARM64 and RISC-V in addition to x86, which I see as very important
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=baeb9a7d8b60b021d907127509c44507539c15e5
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=baeb9a7d8b60b021d907127509c44507539c15e5
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Pavel Pisa
ppisa
Edited 1 year ago
#CHROMuLAN running chromatography data acquisition from ULAD32 on Milk-V Pioneer box #milkvpioneer 64-core RISC-V system. Application has been built on that system as well as #freepascal and #Lazarus LCL actual mainline GIT versions. uLAN kernel driver for instruments connection and control has been build directly on the system as well. Our #QtRvSim #Qt based simulator builds and on this #riscv system as well. More about our open-source chromatography system serving users more than 20 years there https://sourceforge.net/projects/chromulan/
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Pavel Pisa
ppisa
Edited 1 year ago
We will present our new #canbus (CAN/CAN FD) stack for #RTEMS (https://www.rtems.org/) on #CiA_iCC https://old.can-cia.org/icc in Baden-Baden on Wednesday 15. The stack is based on our LinCAN Linux driver (initiated in 2003 as part of https://ortcan.sourceforge.net/ ). The new code source and documentation is available at https://gitlab.fel.cvut.cz/otrees/rtems/rtems-canfd . Our presentation "Scheduling of CAN frame transmission when multiple FIFOs with assigned priorities are used in RTOS drivers" is relevant even for future Linux #SocketCAN stack to solve its long standing link level priority inversion problem at least for some controllers when multi-queue support is implemented and our previous QoS work is updated. The measured latency results on #zynq on #RTEMS are great and in order better than maximal ones on PREEMP_RT Linux https://canbus.pages.fel.cvut.cz/#can-bus-channels-mutual-latency-testing . So there is lot to do on Linux side as well.
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Pavel Pisa
ppisa
Edited 1 year ago
Our #riscv and computer architectures course materials and videos updated https://cw.fel.cvut.cz/wiki/courses/b35apo/en/lectures/start (switch to LaTeX, slides sources available). New online #riscv assembly and low level C-language tasks online evaluation, training site added https://eval.comparch.edu.cvut.cz/ as companion to our #qtrvsim online and native educational simulator https://github.com/cvut/qtrvsim
If you are interested in materials or want to see our hardware ZOO, stop at #osadl booth (in hall 4, booth 4-168) at #embeddedworld #ew24 . OSADL https://www.osadl.org/ has been kind to provide us space there on our academic membership base. We will have GNU/Linux, RTEMS, NuttX ARM and RISC-V HW running there.
If you are interested in materials or want to see our hardware ZOO, stop at #osadl booth (in hall 4, booth 4-168) at #embeddedworld #ew24 . OSADL https://www.osadl.org/ has been kind to provide us space there on our academic membership base. We will have GNU/Linux, RTEMS, NuttX ARM and RISC-V HW running there.
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Pavel Pisa
ppisa
Edited 1 year ago
QtRvSim version 0.9.6 released. The #qtrvsim is educational #riscv simulator with pipeline and cache visualization. Version 0.9.6 adds support of M-mode ecalls, ACLINT MTIMER, MSWI, SSWI, related CSR registers, serial port Rx and Tx interrupts and more. See notes on the release page https://github.com/cvut/qtrvsim/releases/tag/v0.9.6 . Online version and related courses materials are available at https://comparch.edu.cvut.cz/ . It provides enough to run, port or implement a simple (no memory protection or paging; M-mode only) operating system with preemptive multitasking.
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Pavel Pisa
ppisa
Booth presenting open technologies at #LinuxDays 2023. uLAN project https://ulan.sourceforge.net/ used in PiKRON's instruments, agriculture and even in home automation prototype at CTU, full presentation of its 30-years in use https://ulan.sourceforge.net/pdf/ulan-linuxdays23-slides.pdf . The #QtRvSim, RISC-V simulator has been presented as well. #pysimCoder generated code controls motor on #MZ_APO educational kit designed for CTU courses. Open motion base board for Teensy-4.1 is on the right, same as #VisionFive2. See more about related activities at Open Technologies Research Education and Exchange Services (unofficial CTU FEE group) pages https://gitlab.fel.cvut.cz/otrees/org/-/wikis/knowbase
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Pavel Pisa
ppisa
Edited 2 years ago
#qtrvsim educational simulator compiled and running on real #riscv. #visionfive2 provided from RISCV.org developer boards program just arrived today so native build and run of https://github.com/cvut/qtrvsim was tempting.
Simulator can be used with internal assembler or can run simple RV32IM and RV64IM static ELF binaries including even 7 Linux kernel system calls. Packages are provided for x86 and ARM GNU/Linux, Windows, Mac and browser version is available too https://comparch.edu.cvut.cz/ but running it on architecture which it supports and is used for teaching is pleasant step forward.
Simulator can be used with internal assembler or can run simple RV32IM and RV64IM static ELF binaries including even 7 Linux kernel system calls. Packages are provided for x86 and ARM GNU/Linux, Windows, Mac and browser version is available too https://comparch.edu.cvut.cz/ but running it on architecture which it supports and is used for teaching is pleasant step forward.
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