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VFS Stat modes should include FIFO to match Dirent types
by Nobody III 22 Sep '18

22 Sep '18

Currently, the VFS Dirent types listed in repos/os/include/vfs/directory_service.h include FIFO, while the Stat modes do not. I'm writing a transparent link VFS plugin, so I'm using stat() for the Dirent information, so I need this feature in order to avoid losing information. I'm also writing a FIFO plugin, so I want it to accurately represent itself. The FreeBSD libc includes FIFO as S_IFIFO = 0010000. Until this is added, I'll add the constant to my own files, but I'd much rather have this included in vfs/directory_service.h.

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Draft email to genode list about framebuffer
by Edward Sandberg 21 Sep '18

21 Sep '18

I am attempting to add framebuffer support for the Wandboard Quad using the imx53 code as a base and modifying it as necessary. At this point I can build run/framebuffer with the seL4 kernel and I see no errors when I run the uImage on the wandboard Quad but I also don't get any HDMI ouput. I resolved the problem of the bootloader not providing the framebuffer information by hardcoding the framebuffer address, width, height, bpp, and pitch in the framebuffer.cc file. I have tracked down almost all of the addresses that needed to be modified but I am stuck on a couple things. In /os/src/drivers/platform/spec/imx53/ccm.h lines 82 and 83, what are these addresses? I can't find them anywhere in the imx53 device tree. write<Cscmr2>(0xa2b32f0b); write<Cdcdr>(0x14370092); In: ./os/src/drivers/platform/spec/imx53/iim.h line 27, ./os/src/drivers/framebuffer/spec/imx53/pwm.h line 22, and ./os/src/drivers/platform/spec/imx53/src.h line 30 I am unclear on the significance of the chosen register/bitfields and if they needs to be changed to match the imx6: struct Fuse_bank0_gp6 : Register<0x878, 32> {}; struct Ctrl_reg : Register<0x0, 32> struct Ipu_rst : Bitfield<3, 1> { }; Can anyone help with these? Also I have added all of my changes in a branch of the genode code: https://github.com/sand7000/genode/commit/bb7ad099bed584d31542ac237f127798a… In case anyone is interested or is familiar with the imx53/imx6 and has insight into what else I might need to modify. -- Edward Sandberg Adventium Labs 111 3rd Avenue S. Suite #100 Minneapolis, MN 55401 ed.sandberg(a)adventiumlabs.com

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USB in Genode 18.08
by Edward Sandberg 21 Sep '18

21 Sep '18

I was very excited to see that the 18.08 release notes indicated that the USB driver is available for the Wandboard Quad. Unfortunately my testing has not been successful yet. I can build run/usb_hid with the seL4 kernel but at boot time I see: Genode 18.08 455 MiB RAM and 31767 caps assigned to init Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability) not implemented - resources leaked: 0x1 Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability) not implemented - resources leaked: 0x2 Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability) not implemented - resources leaked: 0x4 [init -> usb_hid_drv] --- USB HID input driver --- Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability) not implemented - resources leaked: 0x8 [init -> usb_hid_drv] Warning: use compatibility mode: will claim all HID devices from USB report [init -> usb_hid_drv] Configured HID screen with 0x0 (multitouch=false) Warning: PD (init -> gpio_drv) cap limit (used=25, limit=25) exceeded during transfer_quota(3) [init -> gpio_drv] resource_request: cap_quota=3 [init] child "gpio_drv" requests resources: cap_quota=3 Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability) not implemented - resources leaked: 0x10 [init -> usb_drv] dev_info: EHCI Host Controller [init -> usb_drv] dev_info: new USB bus registered, assigned bus number 1 [init -> usb_drv] dev_info: USB 2.0 started, EHCI 1.00 Warning: mapping failed 0x2dc03000 -> 0x10003000 Warning: mapping failed 0x2dc03000 -> 0x10003000 [init -> test-input] --- Input test --- Warning: mapping failed 0x2dc03000 -> 0x10003000 and that last line repeats indefinitely. I cannot find either of those addresses anywhere in the code so it is unclear to me what the problem is. -- Edward Sandberg Adventium Labs 111 3rd Avenue S. Suite #100 Minneapolis, MN 55401 ed.sandberg(a)adventiumlabs.com

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genode-sel4-arm -- Genode OS and the seL4 micro-kernel on physical ARM hardware
by Adam Wiethuechter 19 Sep '18

19 Sep '18

Webite -- http://genodl4arm.critical.com/ Github -- https://github.com/CriticalTechnologiesInc/genode-sel4-arm Hello everyone, I have something rather exciting to share with you all today that we here at Critical Technologies Inc (CTI) have been working on for sometime now - the marriage of Genode OS and seL4 on native ARM hardware. We currently are supporting the Wandboard Quad (from Wandboard) and the SabreLite (from Boundary Devices). We are hoping to continue development targeting ARMv8a boards of interest; mainly the Raspberry Pi 3B and/or the Xilinx Zynq UltraScale+ ZCU102. This is obviously a work in progress with only the first step but we wished to share our documentation to the community for others to contribute and see what we are doing. I am happy to answer any questions you may have. -- 73's, Adam Wiethuechter, Jr Software Engineer Critical Technologies Inc. <adam.wiethuechter(a)critical.com>

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tz_vmm demo on imx53-qsb using file system
by lzSun 19 Sep '18

19 Sep '18

Hello, I am working on TZ_VMM demo using I.MX53-QSB board and I want to implement my own secure APP. However, I wonder whether there is file system driver that I can use to read/write file on disk for I.MX53-QSB board. At the beginning , I was using VFS (e.g. include "file.tar" in my config file). But when the "file.tar" is getting too large (almost 100M), I met problems when booting the system. From http://genode.org/documentation/release-notes/14.05#Per-process_virtual_fil… I get to know the "file.tar" is build as a ROM module, so , I guess it's because the file are too large and there isn't enough memory to hold the file. Is it right? In general, I wonder how can I read/write file on disk in TZ_VMM demo. It will be great if you can give me any suggestions or helpful materials that I can refer to. Thank you in advance! ------------------ Best wishes

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bin/nic_drv no such directory in Genode 15.02
by Prakash A 19 Sep '18

19 Sep '18

Hi, I am using network_test_nic run script to test nic driver. my command is *make run/network_test_nic* At the end I am getting message like : genode build completed *cp: cannot stat 'bin/nic_drv': No such file or directory* while executing and some error messages. I am using *Genode 15.02* and the platform is *hw_sabrelite_tz*. I have* enabled the dde_ipxe repository in build.config* and also I run the command *make prepare* in dde_ipxe, dde_linux, libports and ports in their respective directories. But still I am getting same error. Is anything to need implement for nic driver? or is there any problem in tool_chain, I am using tool_chain 14.11 for Genode 15.02. Regards, Prakash A M.Tech (CSE)

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Compile C++ and C file together
by lzSun 17 Sep '18

17 Sep '18

Hello, I want to build a component which needs both C++ and C files, however, I encountered some problem when I compiling them together. Here's the error: libc.lib.so: undefined reference to `Libc::Component::construct(Libc::Env&)' collect2: error: ld returned 1 exit status For brief, in the C++ file (main.cc ), I would use a function in the C file , so I want to compile them together. In the main.cc file ,I add " extern "C" { # include cfile.h } " . In the cfile.h there exist the C function declaration ,let's say " fun() " , and I would use fun() in the main.cc. And in the target.mk, I set SRC_C = xx.c xxx.c (all the C files to be used ) and add LIBS+= libc to use C library which the fun() function would use. And I get the error message above, so my question is how can I compile the C++ and the C files together? Any help will be greatful, thanks in advance! ------------------ Best wishes

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A Few Quick Thoughts On Sculpt VC
by John J. Karcher 13 Sep '18

13 Sep '18

Hello, I'm afraid this won't be a very substantive message - I just have a couple of opinions and a question. First, about the new "Live Runtime View". I didn't know what to expect from Sculpt VC, but even given your history of thinking outside the box, this one surprised me. It is a very powerful and elegant idea that perfectly matches the rest of the system. I can't wait to see what comes next! Also, I like the changes to the "launcher" / "deploy" config. It's a nice, clean separation that makes it much easier for the user (and future GUI front-ends, I assume). Since there always seems to be a good reason for even the minor design decisions you make, I will pose this as a question rather than a request: Is there a reason why the Inspect window is not always open? I find it handy for working with the "in-memory config", even without using the storage devices. In the same vein, might I suggest a more "discoverable" way of switching between the Inspect window and the Live Runtime View? (Perhaps a button bar like the "Network" section of the Manager window.) In a nutshell, I continue to be impressed with the direction you've chosen. I am planning on getting a refurbished ThinkPad soon, and will try to migrate to Genode as a "daily driver"; hopefully then I can give more useful feedback. Thanks! -- John J. Karcher devuser(a)alternateapproach.com

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Re: TZ_VMM demo on i.mx53
by lzSun 13 Sep '18

13 Sep '18

>> Hello, >> I am new to Genode and the version I am using is 18.05. I am trying to boot genode on the secure world and linux on normal world on i.MX53-QSB board. I follow steps in this link: https://sourceforge.net/p/genode/mailman/message/33588666/. The system can boot successfully ,but after the linux started，it periodically print this message: >> mmc0: Timeout waiting for hardware interrupt. >> mxsdhci: ============== REGISTER DUMP ============== >> mxsdhci: Sys addr: 0x00000000 | Version: 0x00001201 >> mxsdhci: Blk size: 0x00000000 | Blk cnt: 0x00000001 >> mxsdhci: Argument: 0x00000c00 | Trn mode: 0x341a0000 >> mxsdhci: Present: 0xff880008 | Host ctl: 0x00000121 >> mxsdhci: Clock: 0x000010ff >> mxsdhci: Int stat: 0x00010001 >> mxsdhci: Int enab: 0x107f010b | Sig enab: 0x107f000b >> mxsdhci: Caps: 0x07f30000 >> mxsdhci: =========================================== >if you just used the tz_vmm.run script without modifications, it >should work without these messages. Thanks for your reply! Actually, I just use the tz_vmm.run script without modifications. I have no idea about why this message was printed, could you give me any help? ------------------ Best wishes

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interrupt issues caused by multiple IO-APICs?
by Nobody III 12 Sep '18

12 Sep '18

I've been trying to debug Genode's interrupt issues on my desktop computer on and off for a few years now, and I've recently gathered more information by testing some different devices and configurations that I hadn't before. I'd already found that both usb_drv and ahci_drv waited for interrupts that never came, and were thus unable to function properly. However, fb_drv works without any issues. I know from previous debugging, with the help of multiple Genode developers, that my computer has two IO-APICs (rather than one) and an unusual ACPI table. I've tried using ACPICA in place of Genode's custom ACPI driver, but that doesn't solve my problems, even now that it calls the _PIC method to configure the interrupt controller to run in APIC mode. Recently, I have acquired a PS/2 mouse and keyboard, and have found, to my surprise, that they worked properly in Genode, unlike both USB and AHCI. I was even more surprised to find that my recently-added Intel 8260 wireless card also worked under Genode. I examined my interrupt table (available at https://gist.github.com/NobodyIII/573e58bcb82446ed1da36043676c3013), and found that the wireless card uses MSI interrupts, and noticed that the XHCI controller also uses MSI interrupts. I modified Sculpt's usb_drv config to disable everything except XHCI, and plugged my USB mouse and keyboard into USB 3.0 ports, and that allowed me to use them as well. After further examination of my interrupt table, I noticed that the i8042-compatible PS/2 controller uses regular IO-APIC interrupts like the ACHI, OHCI, and EHCI controllers do. However, AHCI, OCHI, and EHCI all use the upper half of my IRQs (16-32), while the PS/2 controller only uses the lower half. Assuming that the two IO-APICs split the IRQs such that one handles the lower half of the IRQs and the other handles the upper half, it seems that Genode is likely handling the first IO-APIC correctly, but not the second one. Does anyone have any more information or ideas? And has anyone else tried Genode on a computer with multiple IO-APICs?

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