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4332 discussions

snowball board, problems with caching functions

by X Y

Hi, We are porting some linux distro (developed at our university) to the Snowball board as a study assignment. Mostly it is just a minimalistic and striped version of Ubuntu with minimal set of drivers. We have some problem with cache on this board. Currently only one core is active. Also we are using U-boot, which comes with the board. Mostly we rely on hardware initialization done there . The system hangs at some point. We have identified the problem. So let me describe it. If we have some memory region, which is cached then it takes some time till it gets updated from cache. Let me explain this by giving some example: 1. .... memset(cacheddata,5,1000000); printf("%u",cacheddata[1000]);//prints garbage ..... 2. ..... memset(cacheddata, 5,1000000); Delay();//about 0.5 sec, delay should be at least 0.5 sec printf("%u",cacheddata[1000]);//works just fine ..... If memory region is uncached than it works fine and doesn't need delay. Also inserting delays in caching functions solves the problem with hanging. So it seems that it takes some time to complete data transfers between cache and memory but the code continues to execute while caching operation is not finished. I am not sure if I can dig solution from linaro distro. I have never seen anything like that before. Can you please tell what can be possibly wrong there? Maybe there is some hardware component that we have to add support for. Any ideas are welcome. Thanks

14 years, 2 months

ICS running on ST-Ericsson's Snowball board with their Nova A9500 processor (Dual Cortex A9 + Mali 400 GPU)

by Zach Pfeffer

Using a small modification to ICS to use software GL from Vishal Bhoj, Linaro engineer Mathieu Poirier was able to get ICS running on the Snowball board. Check it out! http://www.youtube.com/watch?v=CvRg6OX0DL8 You guys rock! -- Zach Pfeffer Android Platform Team Lead, Linaro Platform Teams Linaro.org | Open source software for ARM SoCs Follow Linaro: http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg - http://www.linaro.org/linaro-blog

14 years, 2 months

Thank you everyone!

by Zach Pfeffer

I just wanted to thank everyone, Infrastructure, Android, Dev Platform, Landing-Teams, MM, GFX, Power, KWG, OCTO, Validation, HR and Marcom for really really kicking butt this cycle. Our Android builds reflect the work of every team in Linaro and the 11.11 Android builds are some of the best we've done. -- Zach Pfeffer Android Platform Team Lead, Linaro Platform Teams Linaro.org | Open source software for ARM SoCs Follow Linaro: http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg - http://www.linaro.org/linaro-blog

14 years, 2 months

[ACTIVITY] Android Platform Team 2011-11-07 to 2011-11-13

by Tony Mansson

Key Points for wider discussion =============================== * android-build has been updated so we can now also LAVA test iMX53, Origen and Snowball * Android 2.3.7 is on android.git.linaro.org for Panda, runs with issues Team Highlights =============================== * Progresss on 11.11 toolchain release * linaro-image-tools now supports Snowball boot conventions * Post mortem 11.10 release completed * PreRC-1 11.11 release tested on member boards * test result tracking spreadsheets split per member * ath6k Origen WiFi firmware has been added to Linaro git repository * A device Tree BP for Samsung Origen has been created * Good progress on mmtest * Androidized 3.1 kernel boots on snowball with graphics * progress on SGX Bugs =============================== 859896, 876598, 851006, 880161, 880157 Miscellaneous =============================== * cyang will be off Nov. 18 Issues =============================== * BP Integrate Audio Loopback Testing into Android and LAVA is blocked and awaiting the output of BP Basic end-to-end audio testing for ARM boards which is likely to be delayed * fgiffs Snowball V2 is now unsupported * Device Tree for Origen has been postponed to the next release cycle because the kernel 3.1 postponed Blueprints =============================== https://launchpad.net/linaro-android/+milestone/11.11

14 years, 2 months

[NOTES] Linaro Release Meeting 2011-11.17

by David Zinman

Enclosed, please find a link to the agenda, notes and actions from the Linaro Release Weekly meeting held on Noveber 17th in #linaro-meeting on irc.freenode.net at 16:00 UTC. == Meeting Minutes == http://wiki.linaro.org/Cycles/WeeklyReleaseMeeting/2011-11-17 == Meeting Log == http://irclogs.linaro.org/meeting-logs/linaro-meeting/2011/linaro-meeting.2… == Announcements == * Linaro GCC 4.6 2011.11 released * Linaro QEMU 2011.11 released * power-qa for 11.11 is released * The 11.11 Android RC pre-release is out * Linaro Linux 3.1-2011.11 is released == Previous actions items == * dzin to escalate Bug 872916 with asac/fabo/pfefferz/rsalveti - INPROGRESS * dzin to sync with rsalveti about releasing on Nov 23. - DONE * dzin/fabo to sync with anmar/usman to make sure LT delivers in time - DONE * dzin to send an e-mail to TLs for PoC - DONE * fabo/rsalveti to confirm build issues with lt-snowball-v3-oneiric have been resolved - DONE * fabo/pfefferz/danilos to discuss build issues and LAVA - INPROGRESS * pfefferz to update bug 823313 - DONE * plars to give more info on 885960, it seems incomplete - DONE * dzin/fabo to sync with Eric Miao about i.MX51 status, EOL or not? - INPROGRESS * fabo/dzin to sync with nytowl concerning bug 753878 - DONE - re-targeted to 11.12 * dzin to ask davelong about progress on bug 843628 - DONE * danilos to sync with deepti about 859473 - DONE * dzin to check with Riku concerning bug 871892 - DONE * fabo/plars/rsalveti/danilos to look how we can produce pre-built images, maybe with offspring/lava hook? - TODO - It could be delayed by the build service consolidation == Agenda == * i.MX51 and BeagleBoard are EOL candidate * linaro-image-tools will be released on Friday * Schedule for 11.12 will be announced soon * Component release done for this cycle * REMINDER - Postmortem * REMINDER 11.12 planning == Image status == * Substantial problems with android-build - pfefferz and asac are working on them * No issues with ubuntu-build - some changes for later in the day == Bugs == * See https://wiki.linaro.org/Cycles/WeeklyReleaseMeeting/2011-11-17#Bugs == Action items == * dzin to facilitate discussion on beagleboard EOL * anmar to unset milestone for ST-E for bug 823313 - DONE * ibiris/rsalveti to have a deadline on the compiz update and nux updates. Deadline Friday Nov 18 - DONE == People present == * dzin * fabo * rsalveti * ubot2 * danilos * ibiris * pfefferz * linarobot * anmar * tgall_foo -- David Zinman Linaro Release Manager | Project Manager Linaro.org | Open source software for ARM SoCs

14 years, 2 months

[Activity] Power Management WG Weekly Status report for week ending 2011-11-18

by Mounir Bsaibes

Enclosed please find the link to the Weekly Status report & meeting minutes for the Power Management working group for the week ending 2011-11-18 == Weekly Status Report == https://wiki.linaro.org/WorkingGroups/PowerManagement/WeeklyReport == Meeting Minutes == https://wiki.linaro.org/WorkingGroups/PowerManagement/Meetings/2011-11-16 == Summary == (For details, see the Weekly Status Report and Meeting Minutes ) * Vincent had a baby girl - Congratulation ! * Released new version of power-qa with basic tests for cpuidle https://launchpad.net/linaro-power-qa/2011/2011.11 * Working on OMAP Common clock work V3. Re-design of struct clk after Linaro Connect Q4.11 discussions * Submitted upstream some acpi and cpuidle cleanup : http://www.spinics.net/lists/linux-acpi/msg33808.html * Continued work on thermal driver for i.MX6, started on i.MX6 cpufreq driver needed by thermal Best regards, Mounir -- Mounir Bsaibes Project Manager Follow Linaro.org: facebook.com/pages/Linaro/155974581091106 http://twitter.com/#!/linaroorg http://www.linaro.org/linaro-blog <http://www.linaro.org/linaro-blog>

14 years, 2 months

[PATCH] ARM: omap_hwmod: Add a new state to handle hwmods left enabled at init

by Rajendra Nayak

A hwmod with a 'HWMOD_INIT_NO_IDLE' flag set, is left in enabled state by the hwmod framework post the initial setup. Once a real user of the device (a driver) tries to enable it at a later point, the hmwod framework throws a WARN() about the device being already in enabled state. Fix this by introducing a new state '_HWMOD_STATE_ENABLED_AT_INIT' to identify such devices/hwmods, so nothing but just a state change to '_HWMOD_STATE_ENABLED' can be done when the device/hwmod is requested to be enabled (the first time) by its driver/user. A good example of a such a device is an UART used as debug console. The UART module needs to be kept enabled through the boot, until the UART driver takes control of it, for debug prints to appear on the console. Signed-off-by: Rajendra Nayak <rnayak(a)ti.com> --- arch/arm/mach-omap2/omap_hwmod.c | 16 ++++++++++++++-- arch/arm/plat-omap/include/plat/omap_hwmod.h | 1 + 2 files changed, 15 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index d7f4623..7d94cc3 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1441,6 +1441,17 @@ static int _enable(struct omap_hwmod *oh) pr_debug("omap_hwmod: %s: enabling\n", oh->name); + /* + * hwmods' with HWMOD_INIT_NO_IDLE flag set, are left + * in enabled state at init. + * Now that someone is really trying to enable them, + * just update the state. + */ + if (oh->_state == _HWMOD_STATE_ENABLED_AT_INIT) { + oh->_state = _HWMOD_STATE_ENABLED; + return 0; + } + if (oh->_state != _HWMOD_STATE_INITIALIZED && oh->_state != _HWMOD_STATE_IDLE && oh->_state != _HWMOD_STATE_DISABLED) { @@ -1449,7 +1460,6 @@ static int _enable(struct omap_hwmod *oh) return -EINVAL; } - /* * If an IP contains only one HW reset line, then de-assert it in order * to allow the module state transition. Otherwise the PRCM will return @@ -1744,8 +1754,10 @@ static int _setup(struct omap_hwmod *oh, void *data) * it should be set by the core code as a runtime flag during startup */ if ((oh->flags & HWMOD_INIT_NO_IDLE) && - (postsetup_state == _HWMOD_STATE_IDLE)) + (postsetup_state == _HWMOD_STATE_IDLE)) { + oh->_state = _HWMOD_STATE_ENABLED_AT_INIT; postsetup_state = _HWMOD_STATE_ENABLED; + } if (postsetup_state == _HWMOD_STATE_IDLE) _idle(oh); diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index 1b81dfb..cd49d60 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -436,6 +436,7 @@ struct omap_hwmod_omap4_prcm { #define _HWMOD_STATE_ENABLED 4 #define _HWMOD_STATE_IDLE 5 #define _HWMOD_STATE_DISABLED 6 +#define _HWMOD_STATE_ENABLED_AT_INIT 7 /** * struct omap_hwmod_class - the type of an IP block -- 1.7.1

14 years, 2 months

[Activity] Kernel WG Weekly Status report for week ending 2011-11-17

by Mounir Bsaibes

Enclosed please find the link to the Weekly Status & Individual Activity reports for the kernel working group for the week ending 2011-11-17 == Weekly Status Report == https://wiki.linaro.org/WorkingGroups/Kernel/WeeklyReport == Individual Activity Report == https://wiki.linaro.org/WorkingGroups/Kernel/ActivityReports/2011-11-11 == Summary == (For more details, please see the WeeklyReport and the Individual Activity Report above) * Released Linaro kernel 3.1-2011.11 https://launchpad.net/linux-linaro/+milestone/3.1-2011.11 * Updated the Linaro+Android tree From the branch: git:// android.git.linaro.org/kernel/linaro-android.gitlinaro-android-3.1-agreen-r… and tagged it as: linux-linaro-3.1-2011.11-0-android-1 * Enabled eCryptFS in Linaro+Android kernel defconfigs * Rebased static IO mappings and removing mach/vmalloc.h to v3.2-rc1. Still need to retest and repost. * Sent out v2 of the pinctrl config patch set. * Reviewed pinctrl driver and pinmux extensions. Completed a limited functionality driver for exynos4. * Reworked omap-serial DT on top of latest serial runtime adaptation patches (rebased on 3.2-rc1). * imx5 board level DT series hit v3.2-rc1. * imx6 with DT support hit v3.2-rc1. * Migrated imx6 clock to common clock series v2. * Worked on madvise VOLATILE ashmem alternative, got first draft of the patch that seems to be working. * Various patch reviews & upstream engagements Best regards, Mounir -- Mounir Bsaibes Project Manager Follow Linaro.org: facebook.com/pages/Linaro/155974581091106 http://twitter.com/#!/linaroorg http://www.linaro.org/linaro-blog <http://www.linaro.org/linaro-blog>

14 years, 2 months

ANN: New Wiki Theme

by Andy Doan

We just updated wiki.linare.org with a new default theme. In addition we've created a new front page to the wiki that is intended to make some of most important links more discoverable. Most people should just press refresh to see the changes. However, if you've updated your wiki account with the non-default theme, you won't see the changes. You'll need to go to "Settings"->"Preferences" and set the theme to either "default" or "linaro-narrow". While this is mostly cosmetic, we had a session at Connect where we outlined many other work items to help make other more substantial improvements. = Details of Changes (if you are interested) 1. The wiki now uses a maximum width for its page content so that text doesn't get really wide when you try to read. So now, unless your browser is set really narrow, you'll see a border around the sides of the page content. 2. The standard banner for links to other websites now shows up on the top of the page. 3. The table-of-contents macro now renders correctly when you try and embed it in a table that floats on the right. -andy

14 years, 2 months

libunwind on Android

by Ken Werner

Hi, I'm about to finish my work on libunwind [1] and I'd like to give you a brief overview on the different Android branches. The good news is that - if you don't need to unwind via DWARF debug frame information [2] - there are no additional patches required for Android. You can just pull the latest version from upstream [3], create an Android.mk and build it. This is what the "android" branch does [4]. The provided Android.mk re-uses the build system of libunwind and therefore relies on a few additional packages to be installed on the build system: autoconf libtool texlive-extra-utils. The Android.mk [5] uses autoreconf and libtool and will create three static libraries: libunwind.a libunwind-arm.a and libunwind-ptrace.a. The debuggerd of the linaro_android_2.3.5 branch requires a tiny patch [6] that adds the two libs to the LOCAL_STATIC_LIBRARIES. In case you want/prefer a classic Android.mk that doesn't use the autotools you can use the "android-20111114" branch [7]. In addition to the Android.mk this one employs four header files that are normally generated by the configure script from the .in files [8]. The makefile creates static and a shared version of libunwind. The third Android related libunwind branch is called "android-20111026" [9] and exists because a Linaro-Android manifest refers to a specific commit-id of this branch. Technically it's very similar to "android-20111114" but the history of the latter has been rebased. So, basically there are two ways of building libunwind for Android. Choose whatever suits your needs best. Happy unwinding! Regards Ken [1] https://wiki.linaro.org/KenWerner/Sandbox/libunwind [2] Unwinding via DWARF debug frames is nice to have but not a strict requirement on Android because most of the ELF file are stripped anyway and libunwind-ptrace can unwind the stack using the ARM specific unwind tables (-funwind-tables). Ping me if you still need the debug frame support - I've got a (hacky) patch for that on my hd. [3] http://www.nongnu.org/libunwind/download.html [4] git clone -b android git://git.linaro.org/people/kwerner/libunwind.git [5] http://git.linaro.org/gitweb?p=people/kwerner/libunwind.git;a=blob;f=Androi… [6] http://people.linaro.org/~kwerner/android/debuggerd/debuggerd-build.patch [7] git clone -b android-20111114 git://git.linaro.org/people/kwerner/libunwind.git [8] config.h, libunwind-common.h, libunwind.h and tdep/libunwind_i.h [9] git clone -b android-20111026 git://git.linaro.org/people/kwerner/libunwind.git

14 years, 2 months

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