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2314 discussions

Enabling the libc_fs plugin
by Swaminathan Ramesh 03 Oct '14

03 Oct '14

Hello Norman, We are trying to enable the rump kernel in Genode. However, we are facing a problem with libc_fs. We are able to locate it in the codebase, but it is not getting included for some reason. Is there any way to enable libc_fs? Thanks, -- Best regards, Swaminathan Ramesh

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crypto library
by Tewodrose Kassa 01 Oct '14

01 Oct '14

Hi all, What crypto library is available in the Genode OS? how do we integrate it with our applications? thanks for answers. Cheers

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Re: trustzone and application
by Stefan Kalkowski 29 Sep '14

29 Sep '14

Hi Abhay, I assume you intended to mail to the developer list, therefore I respond there. On 09/29/2014 04:57 AM, Abhay Amala wrote: > Hi Stefan, > > Thank you very much for your reply > > I am new to kernel programing. I am wondering if you could clarify the > implementation of the helper code for 'smc' instruction. is it similar to > kernel module? > > I understand that I can only use registers to transfer arguments during > trap handling. am i right? No, as said you can use the registers, _or_ uncached memory. > How can arguments using the general purpose > registers transferred from the smc instruction and handled in the VMM code? The VMM has a dedicated dataspace (piece of memory) that contains the register set of the TrustZone world. It can be used to bootstrap the VM, handle traps, or inject interrupts. > > Is there any similar work on this scenario? so that I can further refer it. Yes, there is. The most interesting reference for you shall be: http://genode.org/documentation/articles/trustzone including references to a sophisticated example, including the Linux kernel code. Moreover, there are a lot of threads in the archive of this mailing list, which dealt with the topic of TrustZone, tz_vmm, and the i.MX53 platform. Regards Stefan > > > Thank you in advance for time and consideration > > Best regards, > Abhay > > > On Fri, Sep 26, 2014 at 8:31 AM, Stefan Kalkowski < > stefan.kalkowski@...1...> wrote: > >> Hi Abhay, >> >> On 09/26/2014 04:12 AM, Abhay Amala wrote: >>> Hi >>> >>> I use the tz_vmm example and can run Genode in the secure world and >> Linux >>> in the normal world on i.mx53 qsb in parallel. And i can also run an >>> application in the secure side (on top of Genode) using the tz_vmm >>> script. >>> >>> I want to run a program in the normal world(Linux) and the program should >>> get access to a service or data from an application running in secure >> world >>> (Genode). >>> How can applications in different worlds interact among themselves? thank >>> you in advance >> >> You can use the 'smc' instruction to exit the "normal" world, and trap >> to the secure world. This is a privileged instruction, and cannot be >> used in user mode. So you need to place some helper code in the Linux >> kernel. >> The base-hw kernel in Genode will forward the trap to the VMM >> application. You can use all general purpose registers to transfer >> arguments, or if this isn't enough, place it in a portion of _uncached_ >> memory. The cache lines are tagged as non-secure or secure, so when >> using cached memory o either side you won't feel happy. In general, it >> is possible to translate from virtual memory on the secure side to >> physical memory on the non-secure one. However, Genode doesn't provide >> that feature currently. >> To answer the hypercall, the VMM places the answer within the registers, >> or memory, and resumes its execution. >> >> When you want to signal something the other way asound, from the >> "secure" world to the guest VM, you can emulate an interrupt by >> modifying the register set of the VM within the VMM accordingly. >> For doing so, please consult the ARM v7A reference manual B1.8 about the >> exception handling. >> >> Best Regards >> Stefan >> >>> >>> regards, >>> Abhay >>> >>> >>> >>> >> ------------------------------------------------------------------------------ >>> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >>> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports >>> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper >>> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer >>> >> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >>> >>> >>> >>> _______________________________________________ >>> genode-main mailing list >>> genode-main(a)lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/genode-main >>> >> >> -- >> Stefan Kalkowski >> Genode Labs >> >> http://www.genode-labs.com/ · http://genode.org/ >> >> >> ------------------------------------------------------------------------------ >> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports >> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper >> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer >> >> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >> _______________________________________________ >> genode-main mailing list >> genode-main(a)lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/genode-main >> > -- Stefan Kalkowski Genode Labs http://www.genode-labs.com/ · http://genode.org/

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Para-virtualization support for ARM on Genode
by Praveen B 26 Sep '14

26 Sep '14

Hi We are able to run Genode-14.08 on i.MX6 board. Now I am planning to add support for virtualization for Genode on i.MX6. As the processor is Cortex-A9, it does not have virtualization extensions. So I am planning to implement a hypervisor to run para-virtualized linux, similar to the one proposed in the following paper, http://systems.cs.columbia.edu/archive/pub/2014/03/kvm-arm-the-design-and-i… I am not sure that would work for ARMv7 as they have only tested for ARMv5. Can you suggest any other para-virtualization solutions preferred for the implementation of Genode. I saw L4Linux but it is a port of linux to L4Re and not to the kernel itself. On the other hand, SierraVisor and Xen are bare metal hypervisors. The road map for Genode 14.11 says virtualization support for Cortex-A7. I assume you will be using virtualization extensions and not a para-virtualization solution. Can you suggest which is the best place to start. Should I implement a VMM similar to tz_vmm server or should it be implemented in base-hw as VMM should be in supevisor mode and not user mode. Regards Praveen Srinivas M.Tech 2nd Year, CSE, IIT Madras

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Hack'n'Hike in May 2015
by Norman Feske 26 Sep '14

26 Sep '14

Hello everyone, even though this year's Genode Hack'n'Hike has just passed a few days ago, the planning of the next edition has started already. Let me point you to the following discussion: https://github.com/genodelabs/genode/issues/1256 It goes without saying that we would be delighted about you joining in! Cheers 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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trustzone and application
by Abhay Amala 26 Sep '14

26 Sep '14

Hi I use the tz_vmm example and can run Genode in the secure world and Linux in the normal world on i.mx53 qsb in parallel. And i can also run an application in the secure side (on top of Genode) using the tz_vmm script. I want to run a program in the normal world(Linux) and the program should get access to a service or data from an application running in secure world (Genode). How can applications in different worlds interact among themselves? thank you in advance regards, Abhay

2 1

ambiguous services of children
by David Goltzsche 25 Sep '14

25 Sep '14

Hi all, in my setup, i have a parent process with multiple children with IDs, lets say the are named child_1 to child_3. the parent recievces messages with an ID and should forward it to the child with the corresponding ID. Therefore all children announce the same service, lets say "child_communcation", to the parent. In order to avoid ambiguities, the parent process would have to reconfigure its route every time a message arrives. that means if message with ID 3 arrives, the route for the service "child_communication" must lead to child_3. this solution seems odd to me, am i missing a mechanism in genode that allows a parent to communicate with its children directly, when they all announced the same service? regards David

3 6

Network example in Raspberry Pi
by Mhamad Hmad 23 Sep '14

23 Sep '14

Hi Norman, Hi All As feed back of my previous effort, i can tell you that i was able to bring IPsec to the LWIP stack and test it with manual configuration and it is work well . Now i would like to test that in RPi , but actually I faild even to run the Demo example by using the release 14.08 of Genode. later, I tried with the release 13.11 and it is working smoothly. Now i would like to test the network example ( libports/run/lwip.run) i tried to run it but i get make[1]: Leaving directory `/home/mohammad/genode-13.11/build.rpi' cp: cannot stat `bin/nic_drv': No such file or directory any one was able to run this test successfully before ? if not , any advices or suggestions to help me to do it . best, Mohammad

2 1

Genode onto i.mx53 qsb
by Joseph Lee 22 Sep '14

22 Sep '14

Hello, I'm trying to port genode onto i.mx53 quick start board. I followed the building steps in this thread. http://sourceforge.net/p/genode/mailman/genode-main/thread/9167aa55bacd5e3f… Now i get *uImage* in in the building directory(var/run/tz_vmm) with other two files (*boot_modules.s* and *image.elf*). The size of *uImage* is 7.5MB I loaded the *uImage* to memory address 0x70800000. When I tried to boot with the same memory address (bootm 0x70800000), i get the following error. ## Booting kernel from Legacy Image at 70800000 ... Image Name: Image Type: ARM Linux Kernel Image (gzip compressed) Data Size: 7858693 Bytes = 7.5 MB Load Address: 70010000 Entry Point: 70010000 Verifying Checksum ... OK Uncompressing Kernel Image ... Error: inflate() returned -5 GUNZIP: uncompress, out-of-mem or overwrite error - must RESET board to recover resetting ... I tried again with another memory address (0x78000000) if there was overlap. Still I get the same result. I also checked if there is overlap with the physical address ranges used by u-boot bootloader using *readelf*. Here is the output Elf file type is EXEC (Executable file) Entry point 0x70010000 There are 3 program headers, starting at offset 52 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align EXIDX 0x077138 0x7007f138 0x7007f138 0x02578 0x02578 R 0x4 LOAD 0x008000 0x70010000 0x70010000 0x6ac64 0x6ac64 R E 0x8000 LOAD 0x073000 0x7007b000 0x7007b000 0x0b03c 0xd3ed5 RW 0x8000 What is missing? thanks in advance best regards, Joseph,

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Demo , SDL initiate ptoblem
by Mhamad Hmad 22 Sep '14

22 Sep '14

Hi , i am trying to run the Demo on my Debian PC. i am using the release 14.8 ,I prepare the build directory for the Linux base platform. then, when i try to run it i got Invalid MIT-MAGIC-COOKIE-1 keyInvalid MIT-MAGIC-COOKIE-1 keycommandline read: [Genode] init -> fb_sdl ~~~~~~~~~~~~~~~~~~~~~~~~~~| DirectFB 1.2.10 |~~~~~~~~~~~~~~~~~~~~~~~~~~ (c) 2001-2008 The world wide DirectFB Open Source Community (c) 2000-2004 Convergence (integrated media) GmbH ---------------------------------------------------------------- (*) DirectFB/Core: Single Application Core. (2012-05-20 12:49) (*) Direct/Memcpy: Using Generic 64bit memcpy() (!) Direct/Util: opening '/dev/fb0' and '/dev/fb/0' failed --> No such file or directory (!) DirectFB/FBDev: Error opening framebuffer device! (!) DirectFB/FBDev: Use 'fbdev' option or set FRAMEBUFFER environment variable. (!) DirectFB/Core: Could not initialize 'system_core' core! --> Initialization error! 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) [init -> fb_sdl] SDL_Init failed [init] virtual void Genode::Child_policy::exit(int): child exited with exit value 0 [init -> launchpad] Could not open file "ld.lib.so" any advice ? thank in advance. best.

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