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    <div class="moz-cite-prefix">Martin,<br>
          With the pull from early last week (before Norman's
      announcement of some of the commits for 14.08), the issue with the
      ROM fs initialization has gone. The memory allocation looks
      correct, as far as I can tell:<br>
      <br>
      Core virtual memory allocator<br>
      ---------------------<br>
      Allocator 810d1850 dump:<br>
       Block: [00001000,00002000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [00002000,00003000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [00003000,00004000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [00004000,00005000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [00005000,00006000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [00006000,00007000) size=00001000 avail=00000000
      max_avail=80ff3000<br>
       Block: [00007000,00008000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [00008000,00009000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [00009000,0000a000) size=00001000 avail=00000000
      max_avail=80ff3000<br>
       Block: [0000a000,0000b000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [0000b000,0000c000) size=00001000 avail=00000000
      max_avail=80ff3000<br>
       Block: [0000c000,0000d000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [0000d000,81000000) size=80ff3000 avail=80ff3000
      max_avail=80ff3000<br>
       Block: [8139d000,ffff0000) size=7ec53000 avail=7ec53000
      max_avail=7ec53000<br>
       => mem_size=4291108864 (4092 MB) / mem_avail=4291059712 (4092
      MB)<br>
      <br>
      RAM memory allocator<br>
      ---------------------<br>
      Allocator 810d07f4 dump:<br>
       Block: [80000000,80001000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [80001000,80002000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [80002000,80003000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [80003000,80004000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [80004000,80005000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [80005000,80006000) size=00001000 avail=00000000
      max_avail=1ec63000<br>
       Block: [80006000,80007000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [80007000,80008000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [80008000,80009000) size=00001000 avail=00000000
      max_avail=1ec63000<br>
       Block: [80009000,8000a000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [8000a000,8000b000) size=00001000 avail=00000000
      max_avail=1ec63000<br>
       Block: [8000b000,8000c000) size=00001000 avail=00000000
      max_avail=00000000<br>
       Block: [8000c000,81000000) size=00ff4000 avail=00ff4000
      max_avail=1ec63000<br>
       Block: [8139d000,a0000000) size=1ec63000 avail=1ec63000
      max_avail=1ec63000<br>
       => mem_size=533082112 (508 MB) / mem_avail=533032960 (508 MB)<br>
      <br>
      IO memory allocator<br>
      -------------------<br>
      Allocator 810d28b8 dump:<br>
       Block: [44c00000,44e05000) size=00205000 avail=00205000
      max_avail=00205000<br>
       Block: [44e06000,44e09000) size=00003000 avail=00003000
      max_avail=00205000<br>
       Block: [44e0a000,45000000) size=001f6000 avail=001f6000
      max_avail=001f6000<br>
       Block: [47400000,47820000) size=00420000 avail=00420000
      max_avail=00dff000<br>
       Block: [48000000,48200000) size=00200000 avail=00200000
      max_avail=00dff000<br>
       Block: [48201000,49000000) size=00dff000 avail=00dff000
      max_avail=00dff000<br>
       => mem_size=25284608 (24 MB) / mem_avail=25284608 (24 MB)<br>
      <br>
      IRQ allocator<br>
      -------------------<br>
      Allocator 810d3914 dump:<br>
       Block: [00000000,0000007f) size=0000007f avail=0000007f
      max_avail=0000007f<br>
       => mem_size=127 (0 MB) / mem_avail=127 (0 MB)<br>
      <br>
      ROM filesystem<br>
      --------------<br>
      Rom_fs 810d4954 dump:<br>
       Rom: [810fb000,8113a9e8) init<br>
       Rom: [81175000,811b1ad0) bbb_platform_client<br>
       Rom: [81275000,812a9980) bbb_heart_beat_led<br>
       Rom: [81361000,8139bb30) Autopilot<br>
       Rom: [81233000,812740c8) ctl_module_drv<br>
       Rom: [8139c000,8139ca80) config<br>
       Rom: [811b2000,811f445c) gpio_drv<br>
       Rom: [812aa000,812e8174) pwm_drv<br>
       Rom: [8113b000,81174b6c) platform_drv<br>
       Rom: [811f5000,81232720) timer<br>
       Rom: [8132a000,81360944) sd_card_bench<br>
       Rom: [812e9000,81329164) uart_drv<br>
      <br>
      I'm now into some threading issues which I'll pursue today (I get
      the messages unknown thread, failed to initialize thread
      registers, and failed to start thread after the ROM
      initialization).<br>
      <br>
      Looking at all of the changes in the current master git
      repository, in the area of code I've just gone through, I think I
      should just do another pull from master, unless the there are more
      commits coming in this area before the official release of 14.08.
      I'll find out what's going with this thread issue anyway.<br>
      <br>
      Bob<br>
      <br>
      <br>
      On 08/17/2014 06:56 PM, Bob Stewart wrote:<br>
    </div>
    <blockquote cite="mid:53F1333A.6050101@...196..." type="cite">
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      <div class="moz-cite-prefix">Oops, looked like I stomped on the
        closing brace in the Namespace Arm declaration in
        .../core/processor_driver/arm.h during a merge. Not sure why the
        compiler didn't catch that, but the core library now builds.
        I've one issue with an application module which I'll fix
        tomorrow then get to test the kernel start up again.<br>
        <br>
        Thanks,<br>
                Bob<br>
        <br>
        <br>
        On 08/17/2014 04:51 PM, Bob Stewart wrote:<br>
      </div>
      <blockquote cite="mid:53F115DF.6000804@...196..." type="cite">
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        <div class="moz-cite-prefix">Yes, Martin, I did a make clean
          after the pull. Still looking as to why the Arm namespace
          shows up above Genode. Let you when I find it.<br>
          <br>
          Bob<br>
          <br>
          On 08/17/2014 03:27 PM, Martin Stein wrote:<br>
        </div>
        <blockquote cite="mid:53F1021F.5020805@...1..."
          type="cite">
          <meta content="text/html; charset=ISO-8859-1"
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          <div class="moz-cite-prefix">Btw. hope you have done 'make
            clean' after your Makefile changes. Otherwise this could
            cause the build system to act strange.<br>
            <br>
            On 17.08.2014 21:16, Martin Stein wrote:<br>
          </div>
          <blockquote cite="mid:53F0FFA3.9070102@...1..."
            type="cite">
            <meta content="text/html; charset=ISO-8859-1"
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            <div class="moz-cite-prefix">Hi Bob,<br>
              Looks like there's a problem with the name spaces. Instead
              of being comprised by 'Arm', 'Genode' should be a
              top-level name space as well as 'Kernel'. I think it would
              be a good idea to investigate why the 'Arm' prefix is
              active at all at 'double_list.h:95'.<br>
              <br>
              Martin<br>
              <br>
              On 17.08.2014 18:57, Bob Stewart wrote:<br>
            </div>
            <blockquote cite="mid:53F0DF12.3040105@...196..."
              type="cite">
              <meta content="text/html; charset=ISO-8859-1"
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              <div class="moz-cite-prefix">Hi Martin,<br>
                    Been out-of-town for the past few days.<br>
                <br>
                I understand the changes due to issue 1199 and I did
                create the core library make file (in
                base-hw/lib/mk/platform_bbb) for the platform I'm
                working with before I left. Everything built ok until it
                got to <i>cpu_session_component.c</i> in the core
                library build section where multiple errors occurred.
                The following error would indicate I'm missing something
                fundamental:<br>
                <br>
                In file included from
/Work/Genode/genode-14.05/repos/base-hw/src/core/kernel/scheduler.h:19:0,<br>
                                 from
                /Work/Genode/genode-14.05/repos/base-hw/src/core/kernel/processor.h:21,<br>
                                 from
                /Work/Genode/genode-14.05/repos/base-hw/src/core/kernel/thread.h:21,<br>
                                 from
/Work/Genode/genode-14.05/repos/base-hw/src/core/include/platform_thread.h:29,<br>
                                 from
/Work/Genode/genode-14.05/repos/base/src/core/include/cpu_session_component.h:27,<br>
                                 from
/Work/Genode/genode-14.05/repos/base/src/core/cpu_session_component.cc:21:<br>
                /Work/Genode/genode-14.05/repos/base-hw/src/core/kernel/double_list.h:





                In member function ���void
Arm::Kernel::Double_list<T>::insert_tail(Arm::Kernel::Double_list<T>::Item*)���:<br>
                /Work/Genode/genode-14.05/repos/base-hw/src/core/kernel/double_list.h:95:4:





                error: ���printf��� is not a member of ���Arm::Genode���<br>
                <br>
                <br>
                Regarding the page fault in the ROM fs  initialization,
                I did not isolate the route cause -- it appeared to be
                getting a low address of 0x1000 and try to create a
                translation table entry with that. I thought I saw some
                changes in the ROM area in the pull, so I was going to
                get a clean build and then try again.<br>
                <br>
                    Bob<br>
                <br>
                <br>
                On 08/13/2014 05:12 AM, Martin Stein wrote:<br>
              </div>
              <blockquote cite="mid:53EB2C18.7090008@...1..."
                type="cite">
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                <div class="moz-cite-prefix">Hey Bob,<br>
                  <br>
                  The changes you're talking about originate from this
                  issue: <a moz-do-not-send="true"
                    class="moz-txt-link-freetext"
                    href="https://github.com/genodelabs/genode/issues/1199">https://github.com/genodelabs/genode/issues/1199</a>.
                  Core now consists of a generic
                  'base-hw/src/core/target.mk' that solely defines the
                  target name and a dependency to the library 'core'.
                  All the other content that core is composed of resides
                  in the variant 'core.mk' and 'core.inc'
                  library-description files within 'base-hw/lib/mk' and
                  its sub-directories (respectively 'core-*.mk' and
                  'core-*.inc' for libraries that are additions to the
                  core library).<br>
                  At the one hand these changes reduce redundancy and
                  LOC count as hardware-specifics were split up more
                  fine-grained when transfered into libraries, at the
                  other hand we unified the scheme of handling
                  orthogonal specifiers (see for example the
                  core-trustzone* files that provide optional trustzone
                  support for different platform specifiers). Apart from
                  that, the commits didn't change that much regarding
                  the substance of core.<br>
                  I hope this short insight helps you applying your
                  changes to the current state. If you have further
                  questions on this don't hesitate to ask.<br>
                  <br>
                  Regarding the page fault: Does that mean that you were
                  able to fix the fault?<br>
                  <br>
                  Cheers<br>
                  Martin<br>
                  <br>
                  On 12.08.2014 23:41, Bob Stewart wrote:<br>
                </div>
                <blockquote cite="mid:53EA8A21.1040809@...196..."
                  type="cite">
                  <meta content="text/html; charset=ISO-8859-1"
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                  <div class="moz-cite-prefix">Martin,<br>
                        Have not been able to build with the pull from
                    the master branch. Looks like there are changes to
                    base-hw build that I've not seen before.   The
                    platform target.mk file now appear in a
                    repos//base-hw/lib/mk/ directory as core.mk. Is
                    there documentation on the changes? I searched the
                    git repository but couldn't find any.<br>
                    <br>
                    <br>
                    The mmu faulting address was coming from the
                    creation of Rom_modules in the ROM fs.<br>
                    <br>
                    Thanks,<br>
                            Bob<br>
                    <br>
                    On 08/11/2014 09:03 AM, Bob Stewart wrote:<br>
                  </div>
                  <blockquote cite="mid:53E8BF22.5070805@...196..."
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                    <div class="moz-cite-prefix"><br>
                      Thanks for the quick reply, Martin.<br>
                      <br>
                      I'll pull the current master branch tomorrow and
                      let you know if it fixes my issue.<br>
                      <br>
                      Thanks for the debugging tip on core faults. <br>
                      My core-only mmio regions are the same as they
                      were in 14.02 and unless the handling of the
                      region has changed I should have the correct
                      translation table entries. My PDBG output from the
                      _mmu_exception method was:<br>
                      <br>
                      <i>void Kernel::Thread::_mmu_exception(): f_addr
                        0x1008 f_writes 0x1 f_pd 0x813d6004 f_signal 0x0
                        label core</i><i><br>
                      </i><br>
                      Looks like I've a problem with the fault address,
                      so I'll keep digging to see where that is coming
                      from.<br>
                      <br>
                      Thanks,<br>
                              Bob<br>
                      On 08/11/2014 07:54 AM, Martin Stein wrote:<br>
                    </div>
                    <blockquote
                      cite="mid:53E8AEDC.5080800@...1..."
                      type="cite">
                      <pre wrap="">Hi Bob,

On 09.08.2014 22:21, Bob Stewart wrote:
</pre>
                      <blockquote type="cite">
                        <pre wrap="">I went back to the 14.05 issues today and found I could get the kernel 
initialization to complete successfully if I reverted the S bit to 
"unshared" in the memory attributes in a Section entry create. Prior to 
14.05 this bit was set to "unshared" and was presumably changed in 14.05 
to allow for multiple processors accessing the same memory regions.
</pre>
                      </blockquote>
                      <pre wrap="">We had an issue (<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://github.com/genodelabs/genode/issues/1181">https://github.com/genodelabs/genode/issues/1181</a>)
recently that the shared-bit should be set only when using SMP. The
related changes are in the current state of our master branch
(<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://github.com/genodelabs/genode/tree/master">https://github.com/genodelabs/genode/tree/master</a>) but not in version
14.05. Could you please give it a try?

</pre>
                      <blockquote type="cite">
                        <pre wrap="">In addition, after completing kernel initialization, core's "main" 
function is entered, the info message for creating local services shows 
up, a translation for the top of RAM (0x80000000) is created, then the 
message "failed to communicate thread event" occurs and init is never 
called. Any thoughts on why that message is appearing would be 
appreciated. It appears to be coming from initialization of the root 
interfaces.
</pre>
                      </blockquote>
                      <pre wrap="">This seems to be a page fault in core. Normally core should never
trigger a page fault because there's no one to handle it. So the kernel
doesn't know who to inform about it and thus prints this message. To
prevent this situation, memory regions statically needed by core
(program image, MMIO regions) get mapped 1:1 in the 'Core_pd'
constructor in 'base-hw/src/core/kernel/kernel.cc' using, among others,
the platform specific method 'Platform::_core_only_mmio_regions'. I
assume that your port misses a region in this function. You can get
further information about the page fault by printing things like
'_fault_addr', '_fault_writes', 'char const * Thread::label()', and
'unsigned long Thread::ip' in the method 'Thread::_mmu_exception()' in
'base-hw/src/core/arm/cpu_support.cc' right before '_fault.submit()'.

Cheers
Martin

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</pre>
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                  <blockquote cite="mid:53E8BF22.5070805@...196..."
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