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Re: arndale board cannot write cp15 ,can someone help me?

by Christopher Covington

On 08/16/2013 03:57 AM, Dai Yan wrote: > sorry about that I didn't express explicity. > what I wrote is cp15 c15 regsiter . > And I found that it cannont be written on my adndale board . Those would be implementation defined registers which I don't have much experience with. My only suggestions would be to check for hypervisor traps and read and re-read the chip-specific and architecture documentation. Christopher > 2013/8/16 Dai Yan <kanshuzhi(a)gmail.com <mailto:kanshuzhi@gmail.com>> > > Could someone help me with that? > Previously i always do writing the register from kernel modules but always > failed. > > > > 2013/8/16 Dai Yan <kanshuzhi(a)gmail.com <mailto:kanshuzhi@gmail.com>> > > it seems that the all of cp15 registers cannot be written, > I try write it from kernel space(module). > > Best Regards > > > 2013/8/15 Christopher Covington <cov(a)codeaurora.org > <mailto:cov@codeaurora.org>> > > Hi Dai, > > On 08/15/2013 08:15 AM, Dai Yan wrote: > > Hello, > > > > Maybe it's a stupid question. > > > > I want to modify cp15 register. > > Which register? > > > but I found that the register cannont be written,it can ony be read. > > Is this from user space or kernel space? > > > Could someone help me with that? > > > > distribute version: ubnuntu linaro 13.07 arndale board > > > > kernel:3.10.2+ > > Christopher -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation.

12 years

arndale board cannot write cp15 ,can someone help me?

by Dai Yan

Hello, Maybe it's a stupid question. I want to modify cp15 register. but I found that the register cannont be written,it can ony be read. Could someone help me with that? distribute version: ubnuntu linaro 13.07 arndale board kernel:3.10.2+ Best Regards

12 years

Release Critical Test Result Summary of Calendar Week 33, 2013 for Linux Linaro ubuntu Raring.

by Botao Sun

Calendar Week 33 2013: Here is release critical test result summary for Linux Linaro ubuntu Raring image on following boards: 1) ARM Versatile Express A9; 2) Samsung Arndale; 3) TI Panda 4430; 4) TI Panda 4460; 1. ARM Versatile Express A9 + Linux Linaro Raring (Column AH): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdFNmV… 2. Samsung Arndale + Linux Linaro Raring (Column AA): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdGZJS… 3. TI Panda 4430 + Linux Linaro Raring (Column AH): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… 4. TI Panda 4460 + Linux Linaro Raring (Column AH): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… For release critical test result summary of calendar Week 32, please refer to attachment. Thank you. Best Regards Botao Sun

12 years

[PATCH 2 0/2] RFC: introduce arch_early_time for early boot timestamps

by Andy Green

The following patches extend accurate time much further back into the boot process by adding an optional arch_early_time source that starts counting about 1.75ms after the MMU is enabled. This exposes currently hidden kernel boot times exceeding 340ms for a 2GByte dual A9. Currently only Arm globaltimer is supported as the early time source. Where the globaltimer is and how to map it is configured by Device Tree as explained in the second patch. To get monotonic time in the kernel starting from before the normal time source can be initialized, the early time source offset is allowed to be added to scheduler clock time in the first patch. --- Andy Green (2): scheduler: time: allow arch-specific time offset function arm: time: add globaltimer-based arch_early_time arch/arm/Kconfig | 16 ++++++ arch/arm/Kconfig.debug | 10 ++++ arch/arm/boot/dts/mb8ac0300eb.dts | 10 +++- arch/arm/configs/fujitsu_defconfig | 2 + arch/arm/include/asm/memory.h | 8 +++ arch/arm/kernel/devtree.c | 1 arch/arm/kernel/setup.c | 50 ++++++++++++++++++ arch/arm/kernel/time.c | 101 ++++++++++++++++++++++++++++++++++++ arch/arm/mach-mb8ac0300/Kconfig | 3 + arch/arm/mm/mmu.c | 49 +++++++++++++++++ include/linux/time.h | 7 ++ kernel/sched/clock.c | 12 ++-- mm/Kconfig | 2 - 13 files changed, 263 insertions(+), 8 deletions(-) --

12 years

Re: Huawei G615

by YongQin Liu

Hi, Mattia Sorry, I do not know much about the things you talked about. Maybe someone else can help to give you the details. Thanks, Yongqin Liu On 10 August 2013 23:26, Mattia Ruggeri <mattia.ruggeri88(a)gmail.com> wrote: > Hello Mr Liu > > I'm Mattia and i'm writing you about Lava Dispatcher (a Linaro project): I > think this project is perfect and it is the way to solve my issue with > Huawei G615 (a K3v2 processor device ). > > Yesterday Huawei released kernel source code and some of us would love to > build custom roms. > Since Huawei blocked bootloader, it's impossible for us to install custom > roms and kernel. I saw Lava Dispatcher is able to interact with bootloader, > maybe it can allow us to "bypass" this restriction. > > could you help us with this? > > thank you > regards, > -- Thanks, Yongqin Liu --------------------------------------------------------------- #mailing list linaro-android(a)lists.linaro.org <linaro-dev(a)lists.linaro.org> http://lists.linaro.org/mailman/listinfo/linaro-android linaro-validation(a)lists.linaro.org <linaro-dev(a)lists.linaro.org> http://lists.linaro.org/pipermail/linaro-validation

12 years, 1 month

[PATCH 0/2] RFC: introduce arch_early_time for early boot timestamps

by Andy Green

The following patches introduce a debug feature, accurate timestamps on all kernel logs during boot. At the moment until time is set up in the kernel, all logs are timestamped [0.000000] giving the impression these early boot activities have no duration. That's far from the case. These patches give accurate, monotonic timestamps from the very first log entry allowing insight into where the time is going during the whole of the boot process. It's a debug feature like DEBUG_LL, it does not cooperate with ARCH_MULTIPLATFORM (it works with such a kernel though) but can only be enabled for a single platform at compile-time. To use it, you need an ARM SoC with a globaltimer, which is very common now. Even if the globaltimer is used by the kernel, we can use it in early boot and stop using it as soon as a normal time source is set up, so there's no conflict. There are more details on how to use it and examples of the results in the second patch. --- Andy Green (2): scheduler: time: allow arch-specific time offset function arm: time: add globaltimer-based arch_early_time arch/arm/Kconfig | 4 +++ arch/arm/Kconfig.debug | 35 ++++++++++++++++++++++++++ arch/arm/kernel/head.S | 65 ++++++++++++++++++++++++++++++++++++++++++++++++ arch/arm/kernel/time.c | 41 ++++++++++++++++++++++++++++++ include/linux/time.h | 6 ++++ kernel/sched/clock.c | 12 ++++----- 6 files changed, 157 insertions(+), 6 deletions(-) --

12 years, 1 month

Release Critical Test Result Summary of Calendar Week 32, 2013 for Open Embedded.

by Botao Sun

Calendar Week 32 2013: Here is release critical test result summary for Open Embedded on following configurations: 1) Minimal; 2) LAMP; 3) LEG JAVA ARMv8; 1. Minimal (Column AD): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDhwR… 2. LAMP (Column AD): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDhwR… 3. LEG JAVA ARMv8 (Column G): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdDhwR… For test result summary of Open Embedded Linaro 13.07 release, please refer to attachment. Thank you. Best Regards Botao Sun

12 years, 1 month

Release Critical Test Result Summary of Calendar Week 32, 2013 for Linaro Android.

by Botao Sun

Calendar Week 32 2013: Here is release critical test result summary for Linaro Android image on following boards: 1) ARM Versatile Express A9; 2) Samsung Arndale; 3) TI Panda 4430; 4) TI Panda 4460; 1. ARM Versatile Express A9 (Column AU): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadExQd… 2. Samsung Arndale (Column F): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AuNOCeo15fRHdDFaR… 3. TI Panda 4430 (Column AV): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… 4. TI Panda 4460 (Column AV): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AkxwyUNxNaAadGVWd… For release critical test result summary of calendar Week 31, please refer to attachment. Thank you. Best Regards Botao Sun

12 years, 1 month

Release Critical Test Result Summary of Calendar Week 32, 2013 for Linux Linaro ubuntu Raring.

by Botao Sun

Calendar Week 32 2013: Here is release critical test result summary for Linux Linaro ubuntu Raring image on following boards: 1) ARM Versatile Express A9; 2) Samsung Arndale; 3) TI Panda 4430; 4) TI Panda 4460; 1. ARM Versatile Express A9 + Linux Linaro Raring (Column AG): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdFNmV… 2. Samsung Arndale + Linux Linaro Raring (Column Z): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AgB-fT5LL31CdGZJS… 3. TI Panda 4430 + Linux Linaro Raring (Column AG): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… 4. TI Panda 4460 + Linux Linaro Raring (Column AG): https://docs.google.com/a/linaro.org/spreadsheet/ccc?key=0AroPySpr4FnEdEwwZ… For release critical test result summary of calendar Week 31, please refer to attachment. Thank you. Best Regards Botao Sun

12 years, 1 month

automated testing at ARM Summit

by Mike Turquette

Hi all, There is currently a thread on LAKML that once again touches on the issue of automated build/boot testing: http://permalink.gmane.org/gmane.linux.ports.arm.kernel/257669 There seemed to be some good discussions between the LAVA team and Kevin at LCE13 and I wanted to make others are aware of this thread (and possibly of automated testing being a topic at the ARM Summit). Regards, Mike

12 years, 1 month

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