users July 2014

users@lists.genode.org

19 participants
19 discussions

Kernel Initialization iMx6
by chirag garg 25 Jul '14

25 Jul '14

Hi Stefan, We tried to further to debug call to call as you mentioned . And we find out that the call for *pic( ) in *kernel.cc is reaching to the Grand parent Arm_gic :: Pic constructor. In constructor _distr ( distr_base), _cpu ( cpu_base) are getting initialized, which is working fine. And whenever functions of _distr and _cpu objects are being called, it's got stuck. like in the initialization part *_distr.max_interrupt( ) *is not working. The same thing is working in Genode version 13.11 but not in 14.05. Can you suggest some thing to debug this problem ?? Regards Chirag Garg IIT Madras , Rise Lab

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Kernel Initialization Problem
by chirag garg 24 Jul '14

24 Jul '14

Hi As I am working on iMx6 Board. I am trying to use Arm_gic Interrupt Controller instead of TZIC used in iMx53 board. Previously I was using Pic_based:: Pic( ). As the version change in Genode 14.05, Inside : Genode/repos/base-hw/src/core/kernel/kernel.cc we are calling " init_kernel_uniprocessor( ) " to set up the env for other core and then we are calling " init_kernel_multiprocessor( ) " which is using *pic( )* call at various places which is returning a singleton object. extern "C" void init_kernel_multiprocessor() { ..... ..... init_trustzone(*pic( )*); ...... } and the pic( ): Pic * pic() { * return unmanaged_singleton<Pic>( ) *; } and at this point it is not able to return the object *unmanaged_singleton<Pic>( ) , *what could be the problem ?? Regards Chirag Garg IIT Madras , Rise Lab

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Kernel Initialized in iMX6
by chirag garg 23 Jul '14

23 Jul '14

Hi all. I am trying to port genode 14.05 on iMX6 board. As Aditya done this successfully for Genode 13.05. But Genode 14.05 is having so many changes from version 13.05. I am successfully able to build for iMx6 and it's creating uImage for "printf" script. But when i am running this uImage on the Board and its giving following messages : starting Kernel... Genode 14.05 Kernel Initialized int main( ) : --- create local services--- failed to communicate with thread event Any idea How will I start kernel ? where should i look ?? Regards Chirag Garg IIT Madras , Rise Lab

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Genode & IPsec
by Mhamad Hmad 10 Jul '14

10 Jul '14

Hi All, I would like to bring IPsec to Genode , if there any one interested to participate and share his experiences . I will start step by step and with the easy parts of the IPsec , depend on static configurations and maybe later we will implement the remain features. thanks, Mohammad

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RPC with LWIP
by Mhamad Hmad 07 Jul '14

07 Jul '14

Hi, i will try explain what i want and what i did and then what i am facing, What i am trying to do : - using only one LWIP (tcp-ip) stack - the communication with lwip will be by using RPC calls. - the system should be multi-threading and serve many process in the same time What I did, - I created the client - server for the RPC which invoke the lwip methods. I will use the server only . - I created the libc_rpc_lwip plugin which is similar to libc_lwip . in libc_rpc_lwip i have an aobject of the Connection to call the methods. - Since i want only one stack in the i did not initialize the lwip from the constrcutre of the plugin that is mean : Plugin::Plugin() { PDBG("using the RPC lwIP libc plugin\n"); //rpcclient.r_lwip_tcpip_init(); this is commented } and i made the initiation in the RPC server and i used static IP for now ( I don't want to handle the libc_lwip_nic_dhcp right now) and this is the main method in the RPC server int main(void) { Cap_connection cap; static Sliced_heap sliced_heap(env()->ram_session(), env()->rm_session()); PDBG("lwip init has been started."); lwip_tcpip_init(); enum { BUF_SIZE = Nic::Packet_allocator::DEFAULT_PACKET_SIZE * 128 }; lwip_nic_init(inet_addr("10.0.2.18"), inet_addr("255.255.255.0"), inet_addr("10.0.2.1"), BUF_SIZE, BUF_SIZE); PDBG("gotting ip is done."); enum { STACK_SIZE = 7096 }; static Rpc_entrypoint ep(&cap, STACK_SIZE, "rpclwip_ep"); static rpclwipsession::Root_component rpclwip_root(&ep, &sliced_heap); env()->parent()->announce(ep.manage(&rpclwip_root)); /* We are done with this and only act upon client requests now. */ sleep_forever(); return 0; } - for testing i am using simple echo server and make it configure it to use the libc_rpc_lwip insread of libc_lwip and i was succeeded . What I am Facing: - when i tried to run more then one echo server ( in different port) ,the lwip is not working will and what i found that when the tow echo server try to accept connection the first one will block the other. and it means that lwip is not multi threading any more. Is the RPC prevent the lwip multi-threading or I am doing some thing wrong . I maنe my problem easy to be understood, if not just ask me to clarify. Thank you in advance -- *Mohammad *

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Problems with DMA on Genode+NOVA
by Christian Menard 07 Jul '14

07 Jul '14

Hi all, I'm trying to run Genode+NOVA on a Panasonic Toughpad FZ-M1. I'm new to Genode but thanks to documentation and good coding style I came along pretty good so far. However, I ran into a problem with DMA. I tried to run the AHCI driver, but whenever the driver issued the first SATA- command, the hardware failed because it was not able to read from the specified DMA address. After I enabled IOMMU by adding 'pci_device_pd' to my modules, I got the message "[init -> acpi -> pci_drv -> oci_device_pd] attachment of DMA memory @ cb48c000+1000 failed". I investigated more into the memory allocation process. As far as I understand it, the method 'alloc_dma_buffer' of the PCI session first allocates a dataspace in physical memory. Then it tries to attach this dataspace as a region to the driver's virtual address space. Thereby it enforces the virtual address to be equal to the physical address. So the allocator searches for a free block that contains that virtual address. But in my case it doesn't find a free block. Do you have any ideas on how to resolve this issue? What I don't understand is why physical and virtual address of the dma buffer should be equal. Shouldn't there by some mechanism that ensures that there is a free block that contains the DMA address before the DMA buffer is allocated in physical memory? Tell me if you need any specification on the device. I would like to print the full Log here, but unfortunately I have no serial interface, I am only able to use a vga console. Thanks Christian

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genode - base-i.mx6
by Mahe Mohan 04 Jul '14

04 Jul '14

Hello, As we used the genode which was cloned from git clone https://bitbucket.org/casl/secureos.git We are able to create the build directory for i.mx6. But when we try to create the build directory for genode-14.05 , it is not created. It is showing the error as ./tool/create_builddir hw_imx6 BUILD_DIR=imx.build make: *** No rule to make target `/home/mahe/genode-14.05/tool/builddir/etc/build.conf.hw_imx6', needed by `imx.build/etc/build.conf'. Stop. When we checked inside the genode-14.05 /tool/builddir/etc/ , that file is not found. How can we create that build.conf.hw_imx6?? Thank You, Mahe

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TrustZone on i.MX53 QSB
by Daeyoung Kim 02 Jul '14

02 Jul '14

Hi everyone, I have two questions during testing the tz_vmm on i.MX53 QSB. 1. I want to set up the TrustZone environment like switching between SW and NW on Android in NW on top of Genode in SW, but don't know what I should do exactly. Do you have any manual or advice for this? Which part should I look into? 2. How can I test switching the two worlds on the tz_vmm? Any help appreciated. Thank you! Regards, Daeyoung

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genode-i.mx6 framebuffer
by Mahe Mohan 02 Jul '14

02 Jul '14

Hello, As we have to develop framebuffer for i.mx6. We were referring materials regarding i.mx6 framebuffer. We gained some knowledge on how to deal with this but we dont know from where to start. Can you please guide us?? Thanks, Mahe

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users July 2014