linaro-toolchain June 2013

linaro-toolchain@lists.linaro.org

20 participants
54 discussions

New IRC Channel for Linaro Toolchain Working Group

by Matthew Gretton-Dann

All, During Connect the suggestion was made that each working group should have its own IRC Channel for discussions and topics relating to the group in particular (as opposed to #linaro which is 'generic' Linaro conversations). Therefore I have just set up #linaro-tcwg on Freenode for the Toolchain Working Group. This channel is public and open to anyone who wants to talk with the TCWG group about anything toolchain related. Thanks, Matt -- Matthew Gretton-Dann Toolchain Working Group, Linaro

2 years, 9 months

[PATCH] omap_i2c: don't end I2C transfer immediately when STP bit is set

by Francesco Lavra

When the OMAP I2C controller is operated in master mode, setting the STP bit in the CON register instructs the controller to generate an I2C stop condition only after the programmed number of bytes has been sent on the I2C bus. The current code in QEMU ends the I2C transfer without first sending the pending data instead. Fix the above issue, and let the I2C transfer be ended in omap_i2c_fifo_run(), after the count of bytes to send has reached zero. Signed-off-by: Francesco Lavra <francescolavra.fl(a)gmail.com> --- Without this patch, the controller driver in Linux is unable to send data on the I2C bus, and when the controller triggers an IRQ after having started an I2C transfer, the XRDY flag in the STAT register remains always asserted, leading to an endless loop which eventually results in a kernel oops. hw/i2c/omap_i2c.c | 4 ---- 1 files changed, 0 insertions(+), 4 deletions(-) diff --git a/hw/i2c/omap_i2c.c b/hw/i2c/omap_i2c.c index cfaac07..17d4037 100644 --- a/hw/i2c/omap_i2c.c +++ b/hw/i2c/omap_i2c.c @@ -521,10 +521,6 @@ static void omap_i2c_write(void *opaque, hwaddr addr, omap_i2c_fifo_run(s); } omap_i2c_interrupts_update(s); - } else if (value & 2) { /* STP, but not STT */ - i2c_end_transfer(s->bus); - s->control &= ~0x0602; /* MST | TRX | STP */ - s->count_cur = s->count; } } break; -- 1.7.5.4

10 years, 8 months

Support for ARMV5te

by Ratheendran R

Hi All, I am new to linaro. so would like to know more about linaro. Is linero alternative to yocto project. does the tool chain support armv5te based SOC. Ratheendran

10 years, 9 months

[ACTIVITY] Week 26

by Renato Golin

== Progress == * Divmod patch - Trying to regain knowledge about the SelectionDAG infrastructure - Working with Tim and Joey, got a patch working, but seen some failures in test-suite - Will investigate and submit when all is clear * Lencod in LNT - Bug is a mix of ByVal with wrong spill offset, teams interacting - Bug fixed by a side effect of another change, can't guarantee future stability * CBuild - Patch merged, fired another LLVM benchmark, which failed the same way - Not sure how to proceed here... - Should I dig deep on the old CBuild? - Or should I wait for CBuild2? * Release Maintenance - Talks about maintenance of old/current releases sparking on the list - Bots, tests, benchmarks, release process will have to be followed for those releases - Binary & API compatibility kept, performance doesn't matter much, only serious bugs fixed - This will increase the cost of background duty on our team * Other - Reviewing some more patches - Checking impact of a new alias analysis in the loop vectorizer, all good - EuroLLVM 2014 meeting - Long discussions about pre-UAL support in LLVM: Short answer: no. - Someone else will look at PerfDB analysis, one less thing to do - Got the Buildbot Pandas home, will look at them next week == Issues == * After using all my RAM all the time, for a week, I found a fault on it which prompted kernel panic and stopped my laptop from booting. Luckily, it was just one of the two chips, and even better, it has a lifetime guarantee! But I'll only get a new one after Connect... :( == Plan == * Finish implementation AEABI divmod/udivmod calls * Carefully analyse what's the best configuration for the pandas and produce a pre-packed image * NOT put them back before they're stable, snapshot a known good configuration * But put TWO pandas as self-hosting (and leave Galina's alone) Time allowing... * Check why Phoronix result pages are not working * Write about target-specific tests on TestingGuide.rst * Write a thing or two about the optimization levels in LLVM for the official docs

10 years, 9 months

[ACTIVITY] Week 26

by Will Newton

== Progress == * Some further work on AArch64 ifunc failure, no progress. * Add some extra features to cortex-strings plotting capability. * More memcpy gerrit review. * Basic framework for testing and benchmarking malloc. * Extracted glibc malloc from glibc. * Pushed memcpy performance tweak to cortex-strings and newlib for review. == Issues == * None. == Plan == * Prepare for Connect. * Resubmit memcpy to gerrit as requested. * Respin AArch64 ifunc patches against latest head. -- Will Newton Toolchain Working Group, Linaro

10 years, 9 months

[ACTIVITY] report week 26

by Peter Maydell

Progress: * VIRT-49 closed out (cp15 migration patches committed upstream) * virtio: ** virtio-mmio patchset v1 now sent out to qemu-devel * misc: ** fixed some instances of undefined behaviour (mostly shift related) diagnosed by clang -fsanitize=undefined ** worked through upstream review backlog, sent target-arm and arm-devs pullreqs Plans: * VirtualOpenSystems (sponsored by Huawei) have sent a patchset for KVM support in QEMU for ARMv8; need to review this and reconcile it with the Linaro work in progress in this area * mach-virt * preparation for Connect -- PMM

10 years, 9 months

[ACTIVITY] Week 25

by Zhenqiang Chen

== Issues == * None == Progress == * Investigate conditional compare RTL representation. - Fix new fails when expanding conditional compare to cmp_and/cmp_ior. * Identify the root cause for pr57637. == Plan == * Continue on conditional compare.

10 years, 10 months

[ACTIVITY] Week 25

by Yvan Roux

== Issues == * None. == Progress == * OE Launchpad bug #1192953 - 4.8 g++ failed to find c++ included headers because of the combined usage of --with-sysroot and --with-g++-include-dir - Investigated the issue with Andrew McDermott - found an existing OE workaround * LRA on ARM and AArch64: - Fixed AArch64 failure - Moved to the new one * Cbuild Babysitting == Plan == * Merge review * LRA

10 years, 10 months

[ACTIVITY] 17 - 21 June 2013

by Omair Javaid

== Progress == * Started re-writing x86 assembly language gdb test cases for arm. * Debugging watchpoints code to investigate issues on arm. * Upgraded chromebook Ubuntu installation to a faster SD card. * Tried to resolve various travel hurdles. Gathering different kind of documents for future travel, submitted passport for extension etc. == Plan == * Submit more gdb patches to mailing list. * Wind up work on translation of gdb test cases in arm assembly. * Further investigation about watchpoint issues on arm. * Work on filing US and UK visit visas.

10 years, 10 months

[ACTIVITY] 17-21 June 2013

by Venkataramanan Kumar

== Progress == * AArch64 LTO and PGO support. Tweaked make file to run coremark on V8/openembedded model Experimenting with PGO runs for coremark. * AAarch64 testing Set up Cross build and test in V8 model for GCC testsuites on one of workstation in lab. Completed g++ testsuite with V8 model for gcc trunk. Running gcc tests now. * Installed Ubuntu 13.04 on Chrome book. == Plan == * Complete gcc testsuite with runs with trunk and trunk+gprof GCC patches. * Continue LTO and PGO runs for AArch64 * Linaro connect preparation, check VISA status. ==issues== * libssp support for AArch64 This work is currently in hold. Needed frame layout changes before restarting. * Waiting for some inputs from Rob on Bootstrap issue with GCC on V8 model

10 years, 10 months

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linaro-toolchain June 2013