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2285 discussions

Turmvilla scenario keyboard input stuck in a subsystem
by Duss Pirmin 14 Feb '16

14 Feb '16

Hello I'm playing around with the Turmvilla scenario as Norman provides it. Sometimes the keyboard input will be stuck in one of the started subsystems. Mostly this is the case with the linux subsystem (I only recognize this when I shut down linux and want to close the nit_fb), but I also had the case where it was stuck in the noux subsystem. Is there a way to unstuck the keyboard, or a way how I could debug what happens? Best Regards Pirmin

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/dev/blkdev
by Igor 12 Feb '16

12 Feb '16

Hi list! I've found traces of the subject in libports, but can't see actual libc_blkdev plugin or whatever it's called. Was it removed by some reasons? It would be useful to provide raw disk access for VirtualBox guests. Thanks in advance.

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Test to read files from the elf image and a USB. Configure file system.
by Humberto López León 11 Feb '16

11 Feb '16

Hello Genode community, I'm working on porting an application on Genode where I need to upload files from the elf image and from a storage device , such as a USB . Currently I can read the file of the USB using the libffat library and the server/ffat_fs, but in this case I can not load the file from elf image. I think the problem lies in the configuration of < vfs > . Any ideas to solve my problem ? Thank you This is my run script set build_components { core init drivers/timer server/ffat_fs test/libc_ffat_usb } source ${genode_dir}/repos/base/run/platform_drv.inc append_platform_drv_build_components build $build_components create_boot_directory # # Generate config # set config { <config verbose="yes"> <parent-provides> <service name="ROM"/> <service name="RAM"/> <service name="IRQ"/> <service name="IO_MEM"/> <service name="IO_PORT"/> <service name="CAP"/> <service name="PD"/> <service name="RM"/> <service name="CPU"/> <service name="LOG"/> <service name="SIGNAL"/> </parent-provides> <default-route> <any-service> <parent/> <any-child/> </any-service> </default-route> } append_platform_drv_config append config { <start name="timer"> <resource name="RAM" quantum="1M"/> <provides><service name="Timer"/></provides> </start> } append_if [have_spec gpio] config { <start name="gpio_drv"> <resource name="RAM" quantum="4M"/> <provides><service name="Gpio"/></provides> <config/> </start>} append config { <start name="usb_drv"> <resource name="RAM" quantum="12M"/> <provides> <service name="Block"/> </provides> <config uhci="yes" ehci="yes" xhci="yes"> <storage /></config> </start> <start name="ffat_fs"> <resource name="RAM" quantum="4M"/> <provides> <service name="File_system"/> </provides> <config> <policy label="" root="/" writeable="yes" /> </config> </start> <start name="test-libc_ffat_usb"> <resource name="RAM" quantum="10M"/> <config> <libc stdout="/dev/log" stderr="/dev/log"> <vfs> <rom name="test.txt" /> <dir name="dev"> <log/> </dir> <fs/> </vfs> </libc> </config> </start> </config> } install_config $config set boot_modules { core init timer ld.lib.so libc.lib.so ffat_fs test-libc_ffat_usb test2.txt } lappend_if [have_spec usb] boot_modules usb_drv lappend_if [have_spec gpio] boot_modules gpio_drv append_platform_drv_boot_modules build_boot_image $boot_modules run_genode_until forever

1 0

Running demo on Virtualbox
by Paulo 11 Feb '16

11 Feb '16

Hi all, I'm trying to get the genode demo to run on Virtualbox, from a windows server 2012 box. I've been to the (awesome) Sunday talk at FOSDEM and the prospect of getting genode running on my personal laptop is really exciting, but I'd like to try it on a VM first. I realise genode is "focused on extending the community of users" on 2016, which is great news for me. I've managed to make run/demo, but it halts after a few "Quota exceeded!", and can't even run the config module. I realize I must be missing some quite basic detail, but I've been looking for answers on the Genode Foundations book, on the website and on Google, and so far I'm still feeling a bit lost. make run/demo (cropped) output: spawn ./core Genode 15.11-106-g2a698ff int main(): --- create local services --- int main(): --- start init --- int main(): transferred 17592186044415 MB to init int main(): --- init created, waiting for exit condition --- [init] Could not open ROM session for module "ld.lib.so" Quota exceeded! amount=24576, size=4096, consumed=24576 [init] upgrading quota donation for Env::CPU (8192 bytes) Quota exceeded! amount=32768, size=4096, consumed=32768 [init] upgrading quota donation for Env::CPU (8192 bytes) Quota exceeded! amount=40960, size=4096, consumed=40960 [init] upgrading quota donation for Env::CPU (8192 bytes) [init -> fb_sdl] Could not open ROM session for module "config" [init -> fb_sdl] Could not obtain config file Can anyone shed some light or point me to the right part of the documentation? Also, I can't seem to find instructions for building an ISO. Is that possible? Thanks, /Paulo

2 4

Issue in ACPI parsing code
by Tomasz Gajewski 11 Feb '16

11 Feb '16

I've found a problem in acpi.cc that caused not parsing acpi tables properly on my pc. The problem is that there is an incomplete check for usability of xsdt table. According to some documentation on the net value 0 in revision entry in rsdp means that this is acpi 1.0 and xsdt table is not available but this was not checked. Attached patch fixed this issue for me. -- Tomasz Gajewski

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WOW... could Genode use Wayland Over Wire?
by Peter Lindener 11 Feb '16

11 Feb '16

Hi Genodians- I just took note that Wayland is on its way to inter-operating over the network <http://blogs.s-osg.org/wow-wayland-over-wire/>.. Norman and the other Genode system architects, may request some adjustments to what/How WOW will become...but it sure seems like the time to see if Genode might be able to utilize WOW for it's remote, graphics display.. Then if would be great if Genode's graphical config tool, were arcitected such that the GUI interaction code is partitioned from theGenode configuration business logic, such that one can also travel much lighter when configuring light-weight embedded systems perhaps using TMUX for terminal interaction <https://tmux.github.io/>.. I'm not sure what the final analysis will be on how Genode's existing GUI server will in the end relate to how things are apt to be done in Wayland's WOW api.. .. it would be great to hear more thinking here as to how Genode might best evolve.. all the best -Peter

1 0

why use ambient authority in genode hello world?
by Dan Connolly 10 Feb '16

10 Feb '16

In a 2 Dec twitter conversation <https://twitter.com/GenodeLabs/status/671941252162678784>, I was invited to elaborate here; so... I wholeheartedly agree when the Genode book <http://genode.org/documentation/genode-foundations-15-05.pdf> says: *Capability-based security* supposedly makes security easy to use by > providing an > intuitive way to manage authority without the need for an all-encompassing > and > complex global system policy. I don't understand why ignore this principle with the hello world code example: #include <base/printf.h> > int main() > { > Genode::printf("Hello world\n"); > return 0; > } Why appeal to ambient authority to print to the console? Why not pass a capability to main, as pony does with env <https://github.com/CausalityLtd/ponyc/blob/master/packages/builtin/env.pony>, capsicum at cap_enter() <http://lwn.net/Articles/482858/>, etc? At lower levels of the architecture, genode has this structure; e.g. 3.5 component creation: The environment is constructed by successively requesting the component’s > RM, RAM, CPU, and PD sessions from its parent. Why not continue this structure in the base API? -- Dan Connolly http://www.madmode.com/

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Problem with custom rm-service
by David Werner 09 Feb '16

09 Feb '16

Hi Genode mailing list, the last few days I wrote a server component (called proxy_server) which offers a custom RM-service called "PRM" (Proxy_RM). Under the hood the component maintains a Rm_connection within each Prm_session_component in order to use the original core rm_service. My aim is to intercept all attach and detach operations. Compiling and linking works perfectly but when I run my system scenario (on foc_x86_64) I get the following output: Genode 15.11-71-g2e0e767 int main(): --- create local services --- int main(): --- start init --- int main(): transferred 112 MB to init int main(): --- init created, waiting for exit condition --- [init] Could not open ROM session for module "ld.lib.so" [init -> proxy_server] Proxy::Prm_root::Prm_root(Genode::Rpc_entrypoint*, Genode::Allocator*):Creating PRM_root_component... [init -> proxy_server] int main(): PRM_root created and back in main! [init -> proxy_server] virtual Proxy::Prm_session_component* Proxy::Prm_root::_create_session(const char*): Creating Prm_session_component... [init -> proxy_server] int main(): PRM service announced -> going to sleep... Genode::Signal_session_component::submit(Genode::Signal_context_capability, unsigned int)::<lambda(Genode::Signal_context_component*)>: invalid signal-context capability Genode::Pager_entrypoint::entry()::<lambda(Genode::Pager_object*)>: Could not resolve pf=401feff8 ip=100b9af Error: Test execution timed out make: *** [run/proxy] Fehler 254 I do not understand where the output: Genode::Signal_session_component::submit(Genode::Signal_context_capability, unsigned int)::<lambda(Genode::Signal_context_component*)>: invalid signal-context capability Genode::Pager_entrypoint::entry()::<lambda(Genode::Pager_object*)>: Could not resolve pf=401feff8 ip=100b9af comes from. Is there anyone who can help me with this or who has an idea what I can try? If needed I can post my code here. Best Regards, David

2 3

AHCI driver problem
by Igor 04 Feb '16

04 Feb '16

Hello list! Description: AHCI driver do not announce service "Block" Environment: Genode: 15.11 MB: ASUS Sabertooth Z87 Driver successfully finds my HD, creates appropriate ATA_driver, and that's all. With verbose messages turning on all went ok but it's impossible to work normally in that mode. Thanks.

2 3

Running Ubuntu Snappy under Genode on a SnickerDoodle..?
by Peter Lindener 02 Feb '16

02 Feb '16

It's encouraging to find that Genode already provides some support for the Zynq_7000 ARM/FPGA SOC.. I gather SnickerDoodle <http://krtkl.com/> (I will be Alpha testing), supports Ubuntu Snappy booted from an SD card out of the box <https://www.crowdsupply.com/krtkl/snickerdoodle/updates/1992>... My dream here is that Ubuntu Snappy might run under Genode, along side the more real-time oriented I/O and control process.. (that I would not trust to run within Snappy).... that is:I would like the benefits of both Genode, and a mainstream IOT orientated Linux distribution (that someday I hope will become BSD centric ) thus, I write asking for advice as to how I might best get all of these OS parts to play nicely together...and if anyone else has a similar interest for Genode's future directions. -Peter

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