linaro-dev February 2011

linaro-dev@lists.linaro.org

120 participants
166 discussions

Booting linux-linaro-2.6.37 on Beagle Board

by Avik Sil

Hi, I tried booting linux-linaro-2.6.37 kernel on my beagle board C4. I executed following: 1. Installed linaro on a 4 GB SD card using linaro-image-tools 0.4.1 with hwpack daily snapshot hwpack_linaro-omap3_20110125-0_armel_supported.tar.gz and linaro-natty-headless-tar-20101202-1.tar.gz. It was booting properly on my BB. 2. Cloned linux-linaro-2.6.37. Changed to source directory 3. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- omap2plus_defconfig 4. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- menuconfig (enabled EARLY_PRINTK) 5. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- uImage 6. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules 7. make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules_install INSTALL_MOD_PATH=/media/rootfs 8. cp arch/arm/boot/uImage /media/boot; sync Everything went on smoothly. Then I put the SD card on BB and powered it on. I got a kernel panic: http://paste.ubuntu.com/560562 Please help me figuring out the problem. Is it because I didn't create uInitrd? If so, then how to create it for ARM? Regards, Avik

13 years, 4 months

OMAP4 MPU DVFS patches

by Vishwanath Sripathy

Hi Nicolas, Attached patch set has support for MPU DVFS (cpufreq) on OMAP4 and these are rebased against latest .38 linaro kernel. omap cpufreq driver changes are already posted to lo (https://patchwork.kernel.org/patch/589081/) and OMAP4 DVFS layer changes will be upstreamed once Basic DVFS framework is accepted. Kindly let me know if you can merge these patches for .38 linaro kernel. Regards Vishwa

15 years, 1 month

ARM cross compiler backport available for Lucid and Maverick

by Marcin Juszkiewicz

I would like to announce new Linaro PPA available for all users of Ubuntu 10.04 Lucid and 10.10 Maverick releases: https://launchpad.net/~linaro-maintainers/+archive/toolchain What is inside? Packages with current (gcc-linaro 2011.01-1 based on 4.5.2 release) cross toolchain backported from Ubuntu 11.04 Natty. Please test them and report any problems. Regards, -- JID: hrw(a)jabber.org Website: http://marcin.juszkiewicz.com.pl/ LinkedIn: http://www.linkedin.com/in/marcinjuszkiewicz

15 years, 2 months

Efikamx bootloader help

by Per Forlin

Hi, If I mess up the u-boot in my efikamx smart book how can I install a new one? I tried booting with an SD-card image from http://www.powerdeveloper.org/asset/by-id/116. I guess this only works if I have a working u-boot in place. I don't have the serial/JTAG connector. Is this what I need in order to recover? Thanks, Per

15 years, 2 months

Display support for Pandaboard

by Anand Gadiyar

Hi all, Per Nicolas' request, I've compiled a list of all patchsets needed to get functional display on the Pandaboard. There are 35 patches in all, over 6 series, plus one patch for the board file to enable the DVI support. I've set up two branches (against v2.6.38-rc4, and against the head of linux-linaro-2.6.37 as of today) to make it easy for people to extract and test these. They are available in my git tree here: git://dev.omapzoom.org/pub/scm/anand/linux-omap-usb.git in the display-patches-for-v2.6.38-rc4 and display-patches-for-linaro-37 branches respectively. I've updated the bug report for this issue (Bug #707038) with links to the component series, as well as the link to my tree above. (I'll make sure these two branches stick around - at least as a reference - until the patches make it upstream). @Nicolas, None of these have been queued up by the respective maintainers yet, so they aren't in linux-next as of today. However I believe there are no outstanding review comments for these. I can send a pull request for these if it's okay with you. Let me know if you need them based off any particular tag/commit/branch. - Anand

15 years, 2 months

problem with linaro-media-create

by Aneesh V

Hi, I am trying to prepare an MMC card to boot up Panda with Linaro daily build image. I downloaded linaro-image-tools from: https://launchpad.net/linaro-image-tools I installed all dependencies mentioned in the README and tried to run linaro-media-create like below: sudo ./linaro-media-create --rootfs ext3 --mmc /dev/sdb1 --binary /home/a0393566local/linaro/headless/linaro-natty-headless- tar-20110206-0.tar.gz --hwpack /home/a0393566local/linaro/hwpack /hwpack_linaro-panda_20110206-0_armel_supported.tar.gz --dev panda However, it crashes immediately with the following dump: http://pastebin.com/SV78dP8L Any idea what could be going wrong? Thanks, Aneesh

15 years, 2 months

[PATCH 0/3] Add MX51 basic DT support

by Jason Liu

This patchset adds FSL mx51 device tree support. This is based on git://git.secretlab.ca/git/linux-2.6 devicetree/test This patch has been tested on MX51 babbage board and can boot up succesfully to linux console with DT enabled. Jason Liu (3): arm/dt: add basic mx51 device tree support arm/dt: add very basic dts file for babbage board serial/imx: parse from device tree support arch/arm/boot/dts/babbage.dts | 117 +++++++++++++++++++++++++++++++ arch/arm/mach-mx5/Kconfig | 6 ++ arch/arm/mach-mx5/Makefile | 1 + arch/arm/mach-mx5/board-dt.c | 64 +++++++++++++++++ arch/arm/mach-mx5/clock-mx51-mx53.c | 45 ++++++++++++- arch/arm/plat-mxc/include/mach/common.h | 1 + drivers/tty/serial/imx.c | 81 +++++++++++++++++++--- 7 files changed, 304 insertions(+), 11 deletions(-) create mode 100644 arch/arm/boot/dts/babbage.dts create mode 100644 arch/arm/mach-mx5/board-dt.c mode change 100644 => 100755 drivers/tty/serial/imx.c

15 years, 2 months

[pytimechart] new cpuidle tracepoint

by Vincent Guittot

Hi, I have started to use the new cpuidle tracepoint and created a plugin for pytimechart. I'm not sure if it's the right way to add this cpuidle trace format update but it's the less intrusive one. I also have a plugin for new cpu_hotplug trace points but i'm waiting for trace approval before sending it Vincent Subject: [PATCH 1/1] cpuidle: new plugin new tracepoints are available for cpuidle Signed-off-by: Vincent Guittot <vincent.guittot(a)linaro.org> --- timechart/plugins/cpuidle.py | 35 +++++++++++++++++++++++++++++++++++ 1 files changed, 35 insertions(+), 0 deletions(-) create mode 100644 timechart/plugins/cpuidle.py diff --git a/timechart/plugins/cpuidle.py b/timechart/plugins/cpuidle.py new file mode 100644 index 0000000..32dce91 --- /dev/null +++ b/timechart/plugins/cpuidle.py @@ -0,0 +1,35 @@ +from timechart.plugin import * +from timechart import colors +from timechart.model import tcProcess, c_state_table + +class cpu_idle(plugin): + additional_colors = """ +""" + additional_ftrace_parsers = [ + ('cpu_idle', 'state=%d cpu_id=%d', 'state', 'cpuid'), + ] + + additional_process_types = { + } + + @staticmethod + def do_event_cpu_idle(self,event): + self.ensure_cpu_allocated(event.cpuid) + tc = self.tmp_c_states[event.cpuid] + if event.state != 4294967295 : + if len(tc['start_ts'])>len(tc['end_ts']): + tc['end_ts'].append(event.timestamp) + self.missed_power_end +=1 + if self.missed_power_end < 10: + print "warning: missed cpu_idle end" + if self.missed_power_end == 10: + print "warning: missed cpu_idle end: wont warn anymore!" + tc['start_ts'].append(event.timestamp) + tc['types'].append(colors.get_color_id(c_state_table[int(event.state)])) + tc['linenumbers'].append(event.linenumber) + else : + if len(tc['start_ts'])>len(tc['end_ts']): + tc['end_ts'].append(event.timestamp) + +plugin_register(cpu_idle) + -- 1.7.1

15 years, 2 months

Thumb-2 kernel on imx51/efikamx

by Dave Martin

Hi, Just tested the imx51 Thumb-2 kernel on efikamx here -- it boots fine, but we only went as far as the initramfs. Is anyone currently relying on CONFIG_LATENCYTOP? If so, we should investigate what the incompatibility is... Cheers ---Dave On Wed, Feb 23, 2011 at 6:11 PM, Dave Martin <dave.martin(a)linaro.org> wrote: > Hi there, > > Talking with Loic just now, we thought it could be worth turning on > Thumb-2 in the main omap kernel package after all, since we've at > least seen it work on a few different boards now. It feels ready for > wider testing. > > Is it possible for you to move to a newer snapshot of the 2.6.38 > linaro tree, or will that be problematic at this stage? > > > Since the imx51 kernel at least seems to build and boot in Thumb, it > could be worth enabling a separate build in a PPA, but it's may not > mature enough for everyone to use as the main kernel just yet. If you > want to try this, you need CONFIG_ARM_UNWIND=y, CONFIG_LATENCYTOP=n > and CONFIG_THUMB2_KERNEL=y > > Cheers > ---Dave >

15 years, 2 months

v4l2 vs omx for camera

by Sachin Gupta

Hi All, In Multimedia WG we have been posed with a question regarding best way to expose low level API for camera.so this a questions mainly about pros and cons of v4l2 and omx over each other.So to involve a wider community to discuss this topic I am floating this mail on linaro-dev.Please share your view/experiences.Also please involve any body else in this mail who can provide valuable inputs on this. Thanks Sachin

15 years, 2 months

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linaro-dev February 2011