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Re: A GUI for Genode
by unknown＠example.com 28 Jan '13

28 Jan '13

I agree. > ----- Original Message ----- > From: Robert Campbell > Sent: 01/24/13 08:33 AM > To: Genode OS Framework Mailing List > Subject: Re: A GUI for Genode > > Mockups would provide more clarity. > > Regards, > > Robert > > > On Thu, Jan 24, 2013 at 8:11 AM, Paul Dufresne <dufresnep@...9...> wrote: > > > Scrap almost all. > > > > Let's have 4 levels: > > Tasks -> Categories of applications -> Applications -> Instances of an > > application > > > > There is always just one band shown on the left, showing these buttons: > > Esc) Go to the higher level > > Up/Down) Navigate between items > > +/-) Level dependant meaning > > Ok) Level dependant meaning > > > > Instance of an applicaton > > Esc) Go to the Application level > > +) Open a new instance > > -) Close this instance > > Ok) Not available > > Main area is managed by this instance of the application. > > > > Application level > > Esc) Go to the Categorie level > > Ok) Go to Instance level of the selected application > > +) Add an application to the list of this categorie (from?) > > -) Delete this application from this categorie > > Main area give the name+description of this application > > > > Categorie level > > Esc) Go to the Task level > > Ok) Go to Application level of the selected categorie > > +) Create a new categorie for this task > > -) Delete this categorie from this tak > > Main area give the name+description of this categorie > > > > Task level > > Esc) Not available > > Ok) Go to Category level of the selected task > > +) Create a new category > > -) Delete current category > > Main area give the name+description of this task. > > > > Each left band level should have a different color. > > > > I now believe that there should be just one notification area, to the > > bottom of the screen. > > > > > > ------------------------------------------------------------------------------ > > Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, > > MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current > > with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft > > MVPs and experts. ON SALE this month only -- learn more at: > > http://p.sf.net/sfu/learnnow-d2d > > _______________________________________________ > > Genode-main mailing list > > Genode-main(a)lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/genode-main > > >

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A GUI for Genode
by Paul Dufresne 27 Jan '13

27 Jan '13

About a GUI for Genode. That's in the roadmap for the beginning of 2013. So I began to think about it. My first idea was an old idea, very simple. Each visual application (text or graphics) had it's own framebuffer (could be different size for each). When pressing Ctrl-PageUp or Ctrl-PageDown, you go from one to the other in a round-robin way. Each application occupy full-screen. Now I am thinking about it for about half an hour ant it is evolving a bit. First, this is not obvious that you have to use Ctrl-PageUp or Ctrl-PageDown. I suggest to use a small band on the left. Upper-Left would have a Ctrl-PageUp arrow icon. Down-Left would have a Ctrl-PageDown arrow icon. Each click on one of these arrows, change to the next application (fullscreen except the left region, and the still to come right region). Now how do you launch a new application? My first idea was that one of the application was the launcher. Basically, similar the start page of Windows 8: one icon by available applications. Well that's look a bit wrong... why not category icons to the left, and to the right of it, a 'scrollable' list of icons for each application in the category. Now, it is not funny to go around all the applications to find the launcher. I suggest to put the launcher icon in the middle of the left band. So now the launcher is always easy to get. As soon you click the launcher icon, your application disappears and the launcher take all the 'application' space and the launcher arrow become a go back arrow, to return to your application. Now, a notification area seems important. I suggest to use the right part of the screen for it. In it, you only see the number of urgent, normal, information messages. As soon the mouse cursor goes to the right of the screen, the notifyer take all the 'application' area (almost full-screen) and a go-back to your application icon appears to the right of the screen (similar to the launcher). It is very important that there is an inactive margin space between the application area and the left-part and between the application area and the right-part. That way, if there is a scroller in the application to the right, you will not activate the notifyer by mistake. Perhaps, rather than have only the launcher in left-middle, there could also be an opened-application selector icon, for people that do open a lot of windows. Ok, that's basically my suggestion, I am open for comments about it.

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About Enlightenment and EFL
by Paul Dufresne 25 Jan '13

25 Jan '13

It looks like Qt is the currently (prefered) GUI library for Genode. I am trying to push it toward EFL with this message. ;-) Ok, frankly, I did not begin to develop any application either with Qt or EFL. I am still kind of searching which GUI libs I should learn. Anyway, what is Enlightenment? It might have come to your knowledge as a X11 window manager that no one use anymore. Well, Enlightenment version 17 was in developement stage, for about 12 years, and it just have been released. Which may have made it out of the radar of most people. This long development period, have made it, elaborate their own GUI libraries: EFL (Enlightenment Fondation Library ... I think). They are quite small, and might better fit for this reason alone Genode. But my interest for it, come mostly from this extract of the website: ------------- Evas is the canvas layer. It is not a drawing library. It is not like OpenGL, Cairo, XRender, GDI, DirectFB etc. It is a scene graph library that retains state of all objects in it. They are created then manipulated until they are no longer needed, at which point they are deleted. This allows the programmer to work in terms that a designer thinks of. It is direct mapping, as opposed to having to convert the concepts into drawing commands in the right order, calculate minimum drawing calls needed to get the job done etc. Evas also handles abstracting the rendering mechanism. With zero changes the same application can move from software to OpenGL rendering, as they all use an abstracted scene graph to describe the world (canvas) to Evas. Evas supports multiple targets, but the most useful are the high-speed software rendering engines and OpenGL (as well as OpenGL-ES 2.0). Evas not only does quality rendering and compositing, but also can scale, rotate and fully 3D transform objects, allowing for sought-after 3D effects in your interfaces. It supplies these abilities in both software and OpenGL rendering, so you are never caught with unexpected loss of features. The software rendering is even fast enough to provide the 3D without any acceleration on devices for simple uses. ------------- I like this idea of not to have to care about the exact rendering. Anyway, for more info, this was taken from: http://www.enlightenment.org/p.php?p=about&l=en As for seeing a bit what it can do, I could suggest to try Bodhi Linux, which is a Linux distribution that use Enlightenment: http://bodhilinux.com/ (not totaly sure it really shows clearly the link with Enlightenment 17).

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copyrights, patents, IP and integrity.
by Steve Paesani 25 Jan '13

25 Jan '13

I see a lot of the Genode work stems from and continues at various universities. Asides from the GPL, BSD, and original MIT (I think) licensing there is little mention of patent applications and holders. I believe that honesty is paramount in any endeavor, business or community. Otherwise it could hardly be called "community" to begin with and though the term business may be skewed in many people's minds I for one uphold it as endeavors with integrity that are socially responsible. Reciprocity goes well beyond open source code. Respect for other's work and, especially, valuation of others' time is the true measure of reciprocity. Genode seems ok on the surface but untill it demonstrates clearly what it has in mind for the quality of life, for the valuation of others' time, and how it intends to contribute back in terms of work to the people that supported the entire university system to begin with it is nothing more than another deceptive attempt to profit from free contributions while not only getting paid yet applying for patents directly or indirectly through it's funders. As Genode-labs are the ones soliciting contributions the hiatus rests on them and no one else to prove their own integrity first. An integrity that can only be made known by Genode-labs own efforts to assure the QoL of ALL contributors and not just those of an inner university circle that has benefited from the work of countless people. It doesn't take much to implement a digital punch clock and use a distributed cost license.

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omap4 gpiomux driver
by Alexander Tarasikov 25 Jan '13

25 Jan '13

Hi, Genode hackers! I'm just letting you know I've written the initial implementation of the GPIO pinmux driver for omap4. So that if someone needs it, you don't have to start from scratch. The driver is in our 'tuna-hacks' branch. Currently, it's quite dirty (even the extra file from u-boot got commited accidentally). Currently you can set alternate functions for pins, pullup/pulldown etc. Just as in linux. What is to be done yet before I'm ready to make a patch against upstream: * mux for WKUP pad. Currently, only CORE partition is supported * convert mux_bits.h to c++ style (add namespaces to avoid conflicts) https://github.com/Ksys-labs/genode/commit/a7d58b18daa562300dd873a802d6962a… I would like to receive the following comments: * does it make sense to make separate MUX drivers for each SoC given how specific they are or do we make it part of the GPIO interface? * how should we go about adding PRCM and clock stuff? -- Regards, Alexander

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Nova 32 bits on older Pentium 4 computer.
by Paul Dufresne 24 Jan '13

24 Jan '13

Well, this old Pentium 4 computer does seems to have an IOAPIC, as seen in the dmesg log: [ 0.015459] Freeing SMP alternatives: 24k freed [ 0.015506] ACPI: Core revision 20120320 [ 0.019020] ftrace: allocating 22322 entries in 44 pages [ 0.031186] Enabling APIC mode: Flat. Using 1 I/O APICs [ 0.031562] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 0.031997] ..MP-BIOS bug: 8254 timer not connected to IO-APIC [ 0.031997] ...trying to set up timer (IRQ0) through the 8259A ... [ 0.031997] ..... (found apic 0 pin 0) ... [ 0.042985] ....... works. [ 0.042988] CPU0: Intel(R) Pentium(R) 4 CPU 2.26GHz stepping 04 [ 0.043996] Performance Events: Netburst events, Netburst P4/Xeon PMU driver. [ 0.043996] ... version: 0 [ 0.043996] ... bit width: 40 [ 0.043996] ... generic registers: 18 [ 0.043996] ... value mask: 000000ffffffffff [ 0.043996] ... max period: 0000007fffffffff [ 0.043996] ... fixed-purpose events: 0 [ 0.043996] ... event mask: 000000000003ffff [ 0.044304] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter. [ 0.044410] Brought up 1 CPUs [ 0.044415] Total of 1 processors activated (4517.85 BogoMIPS). [ 0.045127] devtmpfs: initialized Although "[ 0.031997] ..MP-BIOS bug: 8254 timer not connected to IO-APIC" suggest some problem with it. Up to now, by adding some Console::print in bootstrap.cpp (Nova): extern "C" NORETURN void bootstrap() { static mword barrier; Cpu::init(); Console::print("Cpu::init done in bootstrap"); // Create idle EC Ec::current = new Ec (Pd::current = &Pd::kern, 0, Ec::idle, Cpu::id); Space_obj::insert_root (Sc::current = new Sc (&Pd::kern, Cpu::id, Ec::current)); // Barrier: wait for all ECs to arrive here for (Atomic::add (barrier, 1UL); barrier != Cpu::online; pause()) ; Console::print("about to Msr::write"); Msr::write<uint64>(Msr::IA32_TSC, 0); Console::print("will create root task"); // Create root task if (Cpu::bsp) { Hip::add_check(); Ec *root_ec = new Ec (&Pd::root, NUM_EXC + 1, &Pd::root, Ec::root_invoke, Cpu::id, 0, USER_ADDR - 2 * PAGE_SIZE, 0); Sc *root_sc = new Sc (&Pd::root, NUM_EXC + 2, root_ec, Cpu::id, Sc::default_prio, Sc::default_quantum); root_sc->remote_enqueue(); } Console::print("Scheduling"); Sc::schedule(); } I do see my "Scheduling" when booting. But I don't understand which code is executed next. Ok... I understand it is not a interesting computer to use Nova on.

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8 bits depth framebuffer not working
by Paul Dufresne 24 Jan '13

24 Jan '13

>nitpicker and the other GUI components only support graphics modes with RGB565 colors currently Indeed, trying to use 1024x768 with 8 bits depth I was expecting very ugly colors, but it is worst than that. Although I was able to distinguish Launchpad window, I was not able to interact with it.

1 0

[genode] Does order matter?
by jaeyong yoo 23 Jan '13

23 Jan '13

Hello genode! Just out of curiosity, I'm just wondering whether the order of defining RPC calls matter. For instance, GENODE_RPC(Rpc_func_a, void , func_a); GENODE_RPC(Rpc_func_b, void , func_b); GENODE_RPC_INTERFACE( Rpc_func_a, Rpc_func_b); vs. GENODE_RPC(Rpc_func_a, void , func_a); GENODE_RPC(Rpc_func_b, void , func_b); GENODE_RPC_INTERFACE( Rpc_func_b, Rpc_func_a); /* the order of func_a and func_b is reversed */ Do the above two RPC call definitions are equally OK? Best regards, Jaeyong

2 2

needed to add some service from CORE in hello_tutorial/run/hello.run
by Paul Dufresne 22 Jan '13

22 Jan '13

Before it works, I had to add these lines: <service name="RM"/> <service name="CPU"/> <service name="IO_PORT"/> <service name="IRQ"/> inside <parent-provides> section of hello.run. I would have tought however that: <default-route> <any-service> <parent/> <any-child/> </any-service> </default-route> would have made it optional, which was not.

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[genode] bug report on nic_bridge
by jaeyong yoo 22 Jan '13

22 Jan '13

Hello Genode, I think I found a bug on nic_bridge. Just briefly, nic_bridge uses memcmp to maintain avl_tree for clients, but genode memcmp impl. is not fully c-standard compatible. nic_brdige uses address node which is a avl_tree node that uses Genode::memcmp to determine which node is higher: os/src/server/nic_bridge/address_node.h: bool higher(Address_node *c) { using namespace Genode; return (memcmp(&c->_addr.addr, &_addr.addr, sizeof(_addr.addr)) > 0); } Genode memcmp is not fully c-standard compatible: it only returns 0 or 1. base/include/util/string.h: /** * Compare memory blocks * * \retval 0 memory blocks are equal * \retval 1 memory blocks differ * * NOTE: This function is not fully compatible to the C standard. */ inline int memcmp(const void *p0, const void *p1, size_t size) { char *c0 = (char *)p0; char *c1 = (char *)p1; size_t i; for (i = 0; i < size; i++) if (c0[i] != c1[i]) return 1; return 0; } which makes Address_node avl_tree only grows in one direction (1 side). Once the avl_tree is rebalanced, we never reach to the other side (0 side). best regards, Jaeyong

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