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can not get ipc error
by yuqing wang 08 Oct '13

08 Oct '13

Hi I used launchpad to start a hello_client and hello_server.I closed hello_server and expected the call from hello_client could cause an ipc error ,because the target is not exist . I modify the l4_ipc_call function in file ipc-l42-gcc-nopic.h L4_INLINE l4_msgtag_t l4_ipc_call(l4_cap_idx_t dest, l4_utcb_t *u, l4_msgtag_t snd_tag, l4_timeout_t timeout) L4_NOTHROW { l4_umword_t dummy1, dummy2, dummy3; l4_msgtag_t rtag; (void)u; __asm__ __volatile__ (L4_ENTER_KERNEL : "=d" (dummy3), "=D" (dummy1), "=c" (timeout), "=S" (dummy2), "=a" (rtag.raw) : "S" (0), "c" (timeout), "d" (dest | L4_SYSF_CALL), "a" (snd_tag.raw) : "memory", "cc" L4S_PIC_CLOBBER ); // add by wyq int ipc_error = l4_ipc_error(rtag,u); if(ipc_error==L4_IPC_ENOT_EXISTENT ||ipc_error==L4_IPC_RECANCELED) { outstring("Ipc not exist or canceled "); } // end return rtag; } outstring is defined in <l4/sys/kdebug.h>,i am sure it can be used here. I can not get the output and i don't know why. Thanks & Regards

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Fosdem'14
by Sartakov A. Vasily 03 Oct '13

03 Oct '13

Hello, my dear friends. I am sorry if you receive multiple copies of this message (but I know, most of you will receive copies), but mailing list from uKernel dev room at FOSDEM'13 was destroyed (https://lists.fosdem.org/listinfo). Time rolls on, a FOSDEM'14 is not too far and now it is good time to submit a "uKernel and component based os" dev room. Who would like to organize dev room in this year? I would be proud to make this, but I heard someone from TUD would like to organize Dev room in this year. -- Sartakov A. Vasily sartakov@...104...

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Hello World config
by Rudolf Weber 29 Sep '13

29 Sep '13

Hello, I'm using the public git version, the last commit is 3d5f77599fbdca8ae089f36e93b5ecd778ab5b3b . I forged the hello tutorial, but my version didn't run, nor the hello_tutorial itself. There was two errors: 1) the Service "CAP" was not found , first the service "LOG" was not found. 2) The server was not found. In the default route must be <any-service> <parent/> <any-child/> </any-service> or an specific route After some research in the run scripts, I found this following 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> <start name="timer"> <resource name="RAM" quantum="1M"/> <provides><service name="Timer"/></provides> <route><any-service><parent/></any-service></route> </start> <start name="hallo_server"> <resource name="RAM" quantum="1M"/> <provides><service name="Hallo"/></provides> </start> <start name="hallo_client"> <resource name="RAM" quantum="1M"/> </start> </config> It was successfully tested on Linux and foc (with qemu) Does the <parent-provides>-Section need to be compelete ? Does a Child can read out all services provided by its parent and all brothers wfrom which it is allowed to access services ? Rudolf Informatik- und Netzwerkverein Ravensburg e.V http://www.infnet.verein.de/home/rw/index.html

2 1

Recent changes in genodelabs/master
by Norman Feske 26 Sep '13

26 Sep '13

Hello, hereby, I'd like to give a heads-up about some changes that recently hit the genodelabs/master branch. Some of them impose minor API changes. Others might just be interesting to look at. C++11 is now enabled by default. The implementation of the convenience function for accessing the process configuration ('Genode::config()') was moved to a library named 'config'. This avoids a possible ambiguity when creating a singleton instance of the 'Config' object. Furthermore, the 'config()' semantics have slightly changed. Earlier versions reflected errors while obtaining the configuration to the application via exceptions ('Xml_node::Invalid_syntax', 'Rom_connection::Rom_connection_failed'). So each program had to handle those. The new version responds to such failures by printing a diagnostic message and handing out an empty '<config/>' node to the application. There is a new utility for dispatching signals in the context of an RPC entrypoint (located at 'os/include/os/signal_rpc_dispatcher.h'). It allows an easy serialization of signal handlers and RPC functions at the server side. To avoid code duplications across current server implementations, there is a new library called 'server', which performs the steps that are similar for typical servers. The interface is located at 'os/include/os/server.h'. The implementation can be found at 'os/src/lib/server/server.cc'. This library implements the 'main' function of the server and executes the actual server-specific initialization code in the context of the server's entrypoint ('construct()'). The 'construct' function gets a reference to an 'Entrypoint' as argument. In contrast to a normal 'Rpc_entrypoint' the new 'Entrypoint' can serve both signal handlers and RPC functions. This eliminates the need to manually synchronize signal handlers (that were typically be called from the context of the main thread) and RPC functions. The nitpicker GUI server has been reworked to use the server library. Thereby the code has become much more robust. At the same time, nitpicker has become able to respond to configuration changes at runtime. If you like to have a look: 'os/src/server/nitpicker/main.cc' The convenience functions at 'os/include/os/session_policy.h' to parse session policies were slightly changed. The old version of 'Session_policy' took a session-argument string as argument. However, merely the session label was actually used to select a policy. The new version introduces a new 'Session_label' type that extracts the session label from the session arguments. The new 'Session_policy' takes a 'Session_label' as argument. Regards Norman -- Dr.-Ing. Norman Feske Genode Labs http://www.genode-labs.com · http://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

1 0

generation of booting file
by Harish Krish 23 Sep '13

23 Sep '13

Hi, I wanted to generate a '.elf' file for genode . When i executed the 'make' command in the build directory, i got the following error.. make[2]: *** No rule to make target `jaricom.o', needed by `jpeg.lib.so'. Stop. make[1]: *** [jpeg.lib] Error 2 make: *** [gen_deps_and_build_targets] Error 2 How should i rectify this error and proceed with my task. Thanks & Regards, Harish.

2 1

Using C++11 by default
by Norman Feske 17 Sep '13

17 Sep '13

Hello, I would like to go with the times and switch Genode to use C++11 by default. This will enable us to solve a number of problems in a more elegant way, e.g., by using variadic templates for the RPC framework, we can possibly get rid of the current limit of the number of RPC functions supported by the 'GENODE_RPC_INTEFACE' declarations. Are there any objections from Genode users? For example, is anyone of you still using a custom tool chain that does not support C++11? If no one disagrees, I would go forward and add '-std=gnu++11' as default argument to g++. Regards Norman -- Dr.-Ing. Norman Feske Genode Labs http://www.genode-labs.com · http://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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Lwip Server Run
by Venkada Ramanujam 09 Sep '13

09 Sep '13

when i giving *$* *make run/lwip_lx* i got the following. I trying to run http_srv file in linux platform. if any error, tell me what should be change and what are the things need to run the server using lwip. checking library dependencies... Library-description file cxx.mk is missing Skip library syscall because it requires x86 Library-description file startup.mk is missing Skip target drivers/nic/lan9118 because it requires lan9118 Library-description file platform.mk is missing Skip target test/lwip/http_srv because it requires libc_support_for_your_target_platform make[1]: Leaving directory `/home/administrator/genode1/build.lx' genode build completed spawn ./core int main(): --- create local services --- int main(): --- start init --- int main(): transferred 4095 MB to init int main(): --- init created, waiting for exit condition --- [init] parent provides [init] service "ROM" [init] service "RAM" [init] service "IRQ" [init] service "IO_MEM" [init] service "IO_PORT" [init] service "CAP" [init] service "PD" [init] service "RM" [init] service "CPU" [init] service "LOG" [init] service "SIGNAL" [init] child "timer" [init] RAM quota: 360448 [init] ELF binary: timer [init] priority: 0 [init] provides service Timer [init] child "nic_drv" [init] RAM quota: 1933312 [init] ELF binary: nic_drv [init] priority: 0 [init] provides service Nic [init] Could not open file "test-lwip_httpsrv" [init -> nic_drv] --- Linux/tap NIC driver started --- [init] child "nic_drv" announces service "Nic" [init] child "timer" announces service "Timer" With Reg, VENKADA RAMANUJAM.S 9578520238

2 1

Bringing up Genode run/nested_init on a Beaglebone.
by Bob Stewart 31 Aug '13

31 Aug '13

I'm try to get a basic Genode setup working on a Beaglebone Black (TI AM335x processor). I'm using a version of u-boot specifically built for the Beaglebone Black from Robert Nelson's eewiki pages. The only modification I made was to allow for elf file commands. Carefully following how the PandaBoard and the imx53 platforms were build I successfully built from base-hw an elf image for run/nested_init and loaded that onto an SDCard which contained the two stages of u-boot. (Previously, I had succesfuly built a helloworld test version of Fiasco.OC and successfully manually booted it from an SDCard with the same MLO and u-boot.img files. So the basic process of booting an elf image file works.) The elf image is built to load and 0x81000000 with u-boot using the space from start of SDRAM at 0x80000000. The elf file header has an entry point address of 0x81004DC0. Booting the Beagleboard into u-boot from the SDCard, manually loading the elf image file to the load address above, and giving it a"go" command to the entry point address, I get an "application terminated" message as shown below in the console output through minicom: . . . *U-Boot# load mmc 0 0x81000000 image.elf** **reading image.elf** **604700 bytes read in 73 ms (7.9 MiB/s)** **U-Boot# go 0x81004dc0** **## Starting application at 0x81004DC0 ...** **## Application terminated, rc = 0x8108C004** **U-Boot# * At termination, the output above shows rc to be pointed at 4 bytes beyond the start of the bss section of the image. I would have expected to see at least some Genode core debugging messages, at least. Is core not being executed at the entry point? I believe I have the Board_base stucture and cores cpu, pic, platform_support, timer and tlb files correctly set up for the AM335x. Thank you for any help you can provide. Bob Stewart

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Replacing lwip Device Driver
by Penchal Reddy 27 Aug '13

27 Aug '13

Hi All, I am working on Genode. And i want to change the lwip driver code. If i change the lwip code, then how can i replace the lwip driver with new one ?? Is there any document regarding this ?? Thanks in advance. Regards PR

3 2

Genode Source building
by Venkada Ramanujam 23 Aug '13

23 Aug '13

Hi, Complete building and installation for Genode source code is not available. So can i follow below steps. will it work ? 1.Extracting available genode.iso 2.compile only particular code (ex:lwip,nic and netperf for improving tcp/ip performance). 3.replace with existing files (lwip,nic and netperf) with extracted directory (at step 1). 4.again make iso for that directory 5.run with qemu. is it correct or not? or any other procedure for building source and creating iso for genode source. With Reg, VENKADA RAMANUJAM.S 9578520238

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