users

users@lists.genode.org

3 participants
2319 discussions

Device mmio set of registers
by Stefan Thöni 02 Sep '21

02 Sep '21

Hello Genodians What's the best way to handle multiple sets of identical registers on a hardware device? In my current use case the device offers multiple DMA engines each of which has a complex set of registers to set up. Each register is located at base device address + base engine address + register offset so uniform handling should be easy. I handle the device itself and the shared registers using Platform::Device::Mmio. For the registers associated with each DMA engine I have tried: a) A template class providing a base offset as the template parameter. This is unsatisfactory however, as there is no common base class providing access to the registers for the software to be agnostic to which engine it handles. b) A separate class derived from Genode::Mmio. This looks promising, but the Platform::Device::Mmio unfortunatly offers no public accessor to the device base address so I cannot provide the base device address + base engine address to my engine mmio class. Any suggestions? Kind regards Stefan -- Freundliche Grüsse Stefan Thöni Chairman of the Board Senior Security Architect +41 79 610 64 95 gapfruit AG Baarerstrasse 135 6300 Zug https://gapfruit.com

2 1

Announcement: Genode OS Framework version 21.08 released
by Norman Feske 31 Aug '21

31 Aug '21

I'm happy to announce the release of Genode version 21.08. https://genode.org/news/genode-os-framework-release-21.08 The most prominent topics of the new version are GPU support and a fresh approach for porting device-driver code from the Linux kernel to Genode. Up to now, the use of hardware-accelerated graphics has remained a mere experimentation ground for Genode. As such, GPUs remain unused by Sculpt OS. The current release aims to change that, setting the goal of making GPUs a commodity feature of Genode-based systems. This line of work comprises a largely improved version of our custom GPU multiplexer for Intel GPUs, a novel way of decoupling the display driver from the GPU driver, and a revamped Mesa library stack. The second major topic is a new device-driver environment (DDE) for executing unmodified Linux driver code as Genode components. With the re-imagined DDE introduced by Genode 21.08, the porting of such drivers takes only a fraction of time compared to our previous porting efforts. A quick summary of the current release: - Linux-device-driver environment re-imagined - New device drivers - i.MX8mq framebuffer driver - i.MX8mq SD-card driver - Pinephone framebuffer - Pine-A64-LTS networking driver - RAM framebuffer driver for Qemu - Revived GPU support - Mesa 21.0.0 - Architectural integration of GPU multiplexing - Refined user-level network routing - Updated and improved VirtualBox - Media playback and SSL validation for Qt5 and QtWebEngine - Modular integration of LTE modem stack in Sculpt OS - Tool-chain support for RISC-V The detailed release documentation is available here: https://genode.org/documentation/release-notes/21.08 Have fun with exploring the new version! Norman -- Dr.-Ing. Norman Feske Genode Labs https://www.genode-labs.com · https://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

1 0

I Just Need Your Opinion
by Nuri Başçay 14 Aug '21

14 Aug '21

Hi dear Genode Developers, I'm Nuri and I'm an intern student. My boss wants me to learn genode and develop apps. Firstly, thanks for your replies. Thanks to your reply, I ran Hello World in the Linux Genode scenario. The main point is that, It is my first time using Ubuntu and working on an operating system framework. I'm a computer engineering student (my 2nd year finished now). I know flutter, java and python etc. Is there a way to say kindly to my boss that it is impossible to develop genode projects with my knowledge? If yes, please let me know your opinion (what can I say to my boss for example I talked the genode developers so, they said that you need to study more something to start to develop genode) If it is easy to develop apps for genode, please let me know how I can do that. I read genode foundations book and study in this link " https://genode.org/documentation/developer-resources/index " but I just did Hello World project on genode after 3 weeks. So please help me ASAP dear Genode Developers.

2 1

I need your opinion please help me
by Nuri Başçay 11 Aug '21

11 Aug '21

Hi Genode Developers. I'm Nuri and I'm an intern student. My boss wants me to learn genode and develop apps. Firstly, thanks for your replies. Thanks to your reply, I ran Hello World in the Linux Genode scenario. The main point is that, It is my first time using Ubuntu and working on an operating system framework. I'm a computer engineering student (my 2nd year finished now). I know flutter, java and python etc. Is there a way to say kindly to my boss that it is impossible to develop genode projects with my knowledge? If yes, please let me know your opinion (what can I say to my boss for example I talked the genode developers so, they said that you need to study more something to start to develop genode) If it is easy to develop apps for genode, please let me know how I can do that. I read genode foundations book and study in this link " https://genode.org/documentation/developer-resources/index " but I just did Hello World project on genode after 3 weeks. So please help me ASAP dear Genode Developers. By the help of this link below, I tried to run "Creating your first client-server scenario <https://genode.org/documentation/developer-resources/client_server_tutorial> " but got an error and couldn't do anything. https://genode.org/documentation/developer-resources/index And here it is the error that I mentioned ( generating initrd cp: cannot stat 'genode/initramfs': No such file or directory ) input; $ make run/hello KERNEL=linux output; including /home/nuri/genode/tool/run/power_on/qemu including /home/nuri/genode/tool/run/log/qemu including /home/nuri/genode/tool/run/image/disk including /home/nuri/genode/tool/run/boot_dir/linux including /home/nuri/genode/repos/lab/run/hello.run building targets: core init app/hello spawn make core init app/hello make[1]: Entering directory '/home/nuri/genode/build/x86_64' checking library dependencies... Library ldso_so_support Library syscall-linux Library startup-linux Library cxx Library ld Library base Program app/hello/hello Program init/init Library base-linux-common Library core-linux Program core/linux/core-linux COMPILE version.o LINK core-linux make[1]: Leaving directory '/home/nuri/genode/build/x86_64' genode build completed checking configuration syntax CHECK init building targets: lib/ld/linux spawn make lib/ld/linux make[1]: Entering directory '/home/nuri/genode/build/x86_64' checking library dependencies... Library syscall-linux Library startup-linux Library timeout Library cxx Library seccomp Library ldso_so_support Library base-linux-common Library base-linux Library ld-linux Program lib/ld/linux/ld-linux make[1]: Leaving directory '/home/nuri/genode/build/x86_64' genode build completed using 'core-linux' as 'core' using 'ld-linux.lib.so' as 'ld.lib.so' using 'core-linux' as 'core' using 'ld-linux.lib.so' as 'ld.lib.so' generating initrd cp: cannot stat 'genode/initramfs': No such file or directory while executing "exec cp genode/initramfs init" (procedure "build_initrd" line 16) invoked from within "build_initrd $binaries" (procedure "run_boot_dir" line 28) invoked from within "run_boot_dir $binaries" (procedure "build_boot_image" line 35) invoked from within "build_boot_image "core ld.lib.so init hello"" (file "/home/nuri/genode/repos/lab/run/hello.run" line 20) invoked from within "source $include_name" ("foreach" body line 6) invoked from within "foreach include_name [get_cmd_arg --include ""] { # first check if the include name is absolute if {[string first "/" $include_name] == 0} { puts ..." (file "/home/nuri/genode/tool/run/run" line 1062) make: *** [Makefile:393: run/hello] Error 1

2 2

ASAP Please Help me After Hello World in Genode
by Nuri Başçay 10 Aug '21

10 Aug '21

Hello Developers, I'm an intern student and my boss wants me to learn genode. Finally I installed Genode on Ubuntu and made a Hello World example thanks to your community and genode documentation. However, I think that I need some more hints to go further. I want to be a genode developer but I don't know how to program in genode or sculpt os like in c++( Genode uses C++ as I know) I mean how to run c++ code in genode or sculpt? I would like to ask you kindly, How can I start programming and develop myself? (That means going one step further than hello world, maybe antoter basic example to run and compile by genode sculpt) Please, Answer the mail as simple as possible and sorry for my bad English. I'm looking forward to your reply. Thank you.

1 0

ASAP Please Help Me (I'm in intern but know nothing about GENODE)
by Nuri Başçay 10 Aug '21

10 Aug '21

Hello Dear Genode Developers, First, I would like to say sorry for taking your time. I'm Nuri and 21 years old. I'm a ceng student and my boss wants me to start to develop apps by using genode or sculpt i don't know.However, I could not even print Hello World! during 9 days (except by using bash with echo command) Can you please help me about these topics and thanks from now on. Will I develop apps for genode, or sculpt os? As I know, I need to know C++ language to develop apps in genode or sculpt os but do not know where I can programing c++ in genode, I can only open terminal (bash). How and where to start programming (first hello world) to develop apps? I have; *Windows 10 *Ubuntu 20.04 *Genode Sculpt 21.03b as virtualBox *I built sculpt os 19.07 image and I have this bootable usb stick by the help of this video below youtube.com/watch?v=7g8hDQQt-VI&ab_channel=genode-alex I'm curiously waiting for your reply. Best regards. Thank you Nuri Bas

2 2

how to find the thread stack limit?
by Dan Connolly 10 Aug '21

10 Aug '21

I'm trying to port this XS JavaScript engine to genode. It wants to know the stack limit. Any suggestions on how to do this? https://github.com/Moddable-OpenSource/moddable/blob/public/xs/sources/xsCo… char* fxCStackLimit() { #if mxWindows ULONG_PTR low, high; GetCurrentThreadStackLimits(&low, &high); return (char*)low + (32 * 1024); #elif mxMacOSX pthread_t self = pthread_self(); void* stackAddr = pthread_get_stackaddr_np(self); size_t stackSize = pthread_get_stacksize_np(self); return (char*)stackAddr - stackSize + (8 * 1024); #elif mxLinux pthread_attr_t attrs; if (pthread_getattr_np(pthread_self(), &attrs) == 0) { void* stackAddr; size_t stackSize; if (pthread_attr_getstack(&attrs, &stackAddr, &stackSize) == 0) { return (char*)stackAddr + (4 * 1024); } } return C_NULL; #else return C_NULL; #endif } -- Dan Connolly http://www.madmode.com/

2 2

link error when trying to run XS JavaScript engine
by Dan Connolly 10 Aug '21

10 Aug '21

XS is a JavaScript engine designed for microcontrollers. I have been working on getting it running under genode in fits and starts. https://github.com/dckc/genode-js-xs In my most recent episode, I can get goa build to work, but when I try goa run, I get: [init -> genode-js-xs] Error: LD: ELF without DYNAMIC segment appears to be statically linked (ld="no") `file hello` says: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter ld.lib.so, with debug_info, not stripped I put the full link command in https://github.com/dckc/genode-js-xs/pull/12 Any clues on how to diagnose / fix? What does (ld="no") mean? -- Dan Connolly http://www.madmode.com/

3 3

How to switch thread stack between threads?
by Alexander Tormasov 21 Jul '21

21 Jul '21

Hello, I see that it is possible to have 1 thread with multiple stacks, using alloc_secondary_stack() call. But if I want to switch stack From one OS thread to another one for setcontext()? Stack do contain hidden data related to Stack structure and to the native UCB (completely opaque). If I try to use it, it try to find stored structure which contains thread reference, which point to old thread. I need to point it to the new thread In particular , it interfere with thread local storage TLS data, it use wrong content from old thread because it use stack content for thread identification , and fail… How to do this, any ideas? I can’t re-create it - it contains state of the thread , not the best idea to copy content of stack during every context switch … Alexander Отправлено с iPhone

2 12

#genode IRC channel now on libera.chat
by Josef Söntgen 06 Jul '21

06 Jul '21

Hello, as the subject line already reveals, we switched the IRC network and are now domiciled on libera.chat [1]. You are free to drop by and join the #genode channel via the web-client [2] without prior registration for one or the other round of Genode-related smalltalk. [1] https://libera.chat [2] https://web.libera.chat/#genode Regards Josef -- Josef Söntgen Genode Labs http://www.genode-labs.com/ · http://genode.org/

1 0

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

users