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VNC server thoughts
by ttcoder＠netcourrier.com 15 May '23

15 May '23

Dear Genodians, Late this week I decided it was time to add a VNC server to my "suite", spent a bit of time on that, here's my feedback. Skip to bottom for "actionable" stuff. My first instinct was to grep repos/ genode-world for the string "vnc" since those two are my go-to places to find ports. Found VNC-related libs and a "hello world" style example server. (its Makefile seems to need tweaking BTW). Checked out https://genode.org/about/challenges and indeed VNC server is listed there as a potential future task. So that settled it, I thought, I will have to wait until someone volunteers (or volunteer myself). But reading more carefully, I noted it referenced the old "Framebuffer" interface instead of the up-to-date "Gui" interface, and "Input" instead of "Events". So that prompted me to also grep my internal notes and... found a reference to https://genodians.org/jschlatow/2021-06-09-vnc-server , which addresses my need neatly. Yay ! It seems to require a one-liner patch though, otherwise it crashes with a "invalid zero alloc" style message. So I just went ahead and hardcoded a non-empty initial _area (setting it to 320,200) on the first line of this constructor here (_area gets set to the correct screen size later in the code path anyway). Seems leaving it set to "capture.screensize" sets it to an empty area otherwise. https://github.com/jschlatow/goa-pkgs/blob/e881b9e236aa2c2d5083259f9dea68e4… Will look into adding password support etc but I'm already quite a happy camper at any rate, this propels me way ahead. *** Some low-priority recommendations (for after the 23.05 release when the dust settles): * maybe update (or remove) the "challenges" entry about a VNC server * maybe look into "make test/ vnc server example" : I solved the "example.o not found" error with a hackish hardcoding of the full path (strange that it's needed, the "vpath" gmake directive should suffice? my gmake skills are close to zero so not sure) * maybe look into the "zero alloc" crash. Cedric

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[depot_autoremove] Removing outdated PGKs from the depot
by Alice Domage 12 May '23

12 May '23

Dear Genodians, With the democratization of Goa and the direction we are taking to use it more often in our workflow, we extensively create, upload, download, extract, and deploy PKGs on our devices. Inevitably, we filled up our storage with the depot, most notably on our arm_v8a-based gateway that only comes with 16Gb of eMMC. We need a strategy to clearly define what can be removed from the device and do it accordingly. I have sketched out a plan for implementing this feature and would like your opinion on that. Also, would you be interested in taking this upstream? I want to create a new component, 'depot_autoremove', that would be executed by the 'depot_download_manager' after the 'extract' step as an optional stage. The 'depot_autoremove' component will consume a config, the installation config, to identify a set of packages to keep installed. It will remove any other packages and orphan dependencies not part of that set. That would be the first iteration for this component. You may have already thought about this problem and might have an idea of how to solve it. 1. Is there already an existing solution to this problem that I have overlooked? 2. Is there an alternative approach that you would be more in favour of? 3. What is your opinion on this approach? Best, Alice Domage

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Help with usb_report_filter
by Colin Parker 12 May '23

12 May '23

Hello, I'm trying to configure my usb driver to accept multiple possible vendor/product combinations. I found the component usb_report_filter, which as I understand consumes a usb devices report, and produces a usb configuration file with a matching policy and a report that my component can use to request the device. The report to my driver looks like this: <usb_devices> <device label="usb-1-2" vendor_id="0xcf3" product_id="0x9271" bus="0x1" dev="0x2"/> </usb_devices> and it makes sense so my driver requests a device called "usb-1-2". The corresponding usb configuration is: <config bios_handoff="true"><report devices="yes" config="yes"/> <raw> <report devices="yes"/> <policy label="wifi_drv -> usb-1-2" vendor_id="0xcf3" product_id="0x9271" bus="0x1" dev="0x2"/> </raw> </config> This seems like almost what I want, but somehow the <policy> node within the <raw> node seems to stop the driver from accepting this connection - I get a warning saying: [init -> usb_host_drv -> usb_drv] Warning: no policy defined for label 'wifi_drv -> usb-1-2' Am I using the component right? Is there a better way to do this? I followed the example in repos/ports/run/vbox5_genode_usb_hid_raw.run. Thanks, Colin

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Can Genode run on the Mixtile Blade 3?
by Jacek Rużyczka 06 May '23

06 May '23

Good evening Genodians, in a couple of months I'll receive a number of Mixtile Blade 3 SBCs (based on the RK3588) https://www.crowdsupply.com/mixtile-limited/mixtile-blade-3 and would like to (at least) try to equip them with the Genode OS. What's necessary for my project, is clustering four such nodes with a PCIe switch (supplied by Mixtile; see their web page) as well as using single SBCs as storage nodes, which will be connected to a hard drive. Is it possible to port Genode onto this platform, or is this impossible with the current version? I simply don't wanna start an infaust undertaking. Thank you. Regards Jacek Rużyczka

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BBC Basic binary for Genode / armv8
by Michael Grunditz 04 May '23

04 May '23

Hello Genodians, I have added a BBC Basic binary to my genode-rockchip gitbub repo [1]. Put it in your build/armv8_a/bin directory. I don't have any ready to use run files. You need to run the terminal scenario and make sure that stdout/in is to the terminal. The reason for not doing source upload is that the build system for it is broken. This will change in the future. The status for my RISC OS / Genode project is that I am prototyping the cpu emulation layer on pc/linux. Right now I can boot RISC OS and run some simple commands. The main issues on a target system is to get interrupts to the emulation from hardware. I think that I can map up the GIC without much problems, but the GIC will interrupt the cpu that runs the emulation. It will be a slight an adventure to get it into the emulation! Have fun with basic , tell me if you can use it! Michael [1] https://github.com/mickenx/genode-rockchip/tree/main/bin/armv8a

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Other filesystems in Genod/Sculpt OS
by reza.fathzadeh＠yahoo.com 02 May '23

02 May '23

Hi everyone, Would filesystems other than EXT2 be supported in Genode/Sculpt OS? And if so, is there a roadmap/timeline? I find EXT2 (even EXT3/4) quite limiting. Thank you,Reza

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Pinephone image eMMC
by Sagar Acharya 26 Apr '23

26 Apr '23

Dear folks, Last time that I flashed the pinephone image of genode, it was only working for sd card and not for eMMC. Does it now work for eMMC? Thanking you Sagar Acharya https://designman.org

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Minor problem with bin/src archive
by Martin Stein 25 Apr '23

25 Apr '23

I was just fixing a problem with the old file vault for Sculpt 23.04 and wanted to try it with the file_vault run script (with --depot-auto-update) when I ran into an issue I did not have before my fix but that was totally unrelated to my fix: ! [init -> file_vault -> vfs_block] Error: LD: symbol not found: 'typeinfo for Genode::Console' ! [init -> file_vault -> vfs_block] Error: Uncaught exception of type 'Linker::Not_found' I couldn't figure out where it came from and it stayed also after 'make clean'. Finally, I could fix it by removing both my vfs_block src and bin archives (so, they got rebuilt). Vfs_block has LIBS += base in its target.mk and the file vault pkg has vfs_block in its archives and <content/> tag. Its not critical for me but I thought it would be worth mentioning it. Cheers, Martin

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PinePhone image 2023-04-06 (wifi, software-add tab, Jitsi preset)
by Norman Feske 24 Apr '23

24 Apr '23

Dear PinePhone users, I have just published a new Sculpt image for the PinePhone today: https://depot.genode.org/nfeske/image/ The new version 2023-04-06 introduces three new features: 1. Wifi! For those of you without mobile data connectivity, you can now select "Wifi" in the network part of the GUI, select an access point and enter your passphrase, just like on the PC version of Sculpt. Since the passphrase is not saved, you have to enter it each time when connecting. Not a bug. It's for training your blind typing skills. ;-) ...don't worry, those usability topics are on our list. 2. There is a new preset that starts a pre-configured Morph browser right into Jitsi alongside the camera driver. Speaking of the camera, it is now operated in gray scale because we found the colors provided by the sensor not really presentable. Later, we may come back to work on the colors but until then, gray-scale looks nice enough. When asked, select "Use Jitsi on the Website". As of now, the preset is mainly intended to ease the testing of further performance optimizations. It may not by suited for practical use yet, but I think its a good time to show how far we have come already. 3. The new "Add" tab in the Software section provides the functionality of Sculpt's '+' menu, which is the browsing of depot menus, the installation of packages, and the manual deployment of new components. In addition to regular Sculpt, it offers a way to directly add URLs of new software providers. Since Sculpt does not know any public keys of such providers, downloads can of course not be verified. But the system still offers you the option to download packages without verification. The assessment of trust in such components is of course entirely up to you. Installation - If you have an earlier version of Sculpt installed and a mobile data connection, you can use the "Update" tab in the software section of the GUI to check for updates from 'nfeske', download the '2023-04-06' image, press the install button, and reboot. You may chose to also download an older image (without install). So you can always switch back to the old version should the new image not be to your liking. - For preparing a fresh SD-card, please follow the instructions as given in the first announcement: https://genodians.org/nfeske/2023-02-01-mobile-sculpt Have fun with trying out the new image! Cheers 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

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FOSDEM talk about device driver ports
by Stefan Kalkowski 23 Apr '23

23 Apr '23

Hello Genodians, those of you, who did not attend this year's FOSDEM physically or virtually, but are interested in my talk about Linux device driver porting to Genode: https://fosdem.org/2023/schedule/event/ddtransplant/ The video recording is now available. Just follow the link above. Regards Stefan -- Stefan Kalkowski Genode labs https://github.com/skalk | https://genode.org

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