Hi Andrzej, Please could you avoid top posting?
On Wed, 10 Apr 2019 at 06:07, Witkowski, Andrzej <andrzej.witkow...@intel.com> wrote: > > Hi, > > Thank you very much for your response and fix for the issue. > > Do you know when your patches will be pushed to an official u-boot repository? Perhaps a few weeks. > Could you send/share me the patches earlier if it will last longer than a few > days, please? http://patchwork.ozlabs.org/user/todo/uboot/?series=101566 > > My next step is to investigate how to enable traces for arm u-boot on qemu > (qemu_arm_defconfig and qemu_arm64_defconfig), but I'm not sure if the path > was tested by anyone at all. > Currently, I am able to compile arm u-boot for qemu, but observe qemu hang > when it tries to run arm u-boot with traces ON. > This is what I do to compile and run arm u-boot on qemu: > - I put the definitions below to "include/configs/qemu-arm.h" file > #ifdef FTRACE > #define CONFIG_TRACE > #define CONFIG_CMD_TRACE > #define CONFIG_TRACE_BUFFER_SIZE (16 << 20) > #define CONFIG_TRACE_EARLY_SIZE (8 << 20) > #define CONFIG_TRACE_EARLY > #define CONFIG_TRACE_EARLY_ADDR 0x00100000 > #endif > - I comment out the lines below in "examples/Makefile" file > #subdir-y += standalone > #subdir-$(CONFIG_API) += api > - I perform the commands below: > make distclean > make qemu_arm64_defconfig > CROSS_COMPILE=/opt/toolchain/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- > make > CROSS_COMPILE=/opt/toolchain/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- > qemu-system-aarch64 -machine virt -cpu cortex-a53 -nographic -no-reboot -bios > u-boot.bin > > After running qemu it hangs. > I perform all my activities on Fedora 28, gcc (GCC) 8.3.1 20190223 (Red Hat > 8.3.1-2), QEMU emulator version 2.11.2(qemu-2.11.2-4.fc28), u-boot latest > source code. > > Could you give me your opinion on my steps above, please? > Do you know if, currently, is it possible at all to run arm u-boot with > traces ON on qemu? > If so, could you give me a contact point to help me enable the path, please? Well it was tested on snow (ARM Chromebook), but I haven't tried it recently. I suggest running with gdb to see the hang, but my guess is that there is a timer function being called which needs a 'notrace' modifier on it. Regards, Simon > > Andrzej Witkowski > ND Poland > SW Developer > > Intel Technology Poland > ul. Slowackiego 173 > 80-298 Gdansk > Poland > > > -----Original Message----- > From: Simon Glass [mailto:s...@chromium.org] > Sent: Tuesday, April 09, 2019 11:14 PM > To: Witkowski, Andrzej <andrzej.witkow...@intel.com> > Cc: tr...@konsulko.com; U-Boot Mailing List <u-boot@lists.denx.de> > Subject: Re: uboot sandbox tracing > > Hi Andrzej, > > On Mon, 1 Apr 2019 at 08:26, Witkowski, Andrzej <andrzej.witkow...@intel.com> > wrote: > > > > Hi, > > > > > > > > I’m SW Developer at Intel, Poland. > > > > I try to enable tracing in u-boot to see how it works. > > > > I follow the procedure described in “doc/README.trace” file. > > > > Unfortunately, I always receive segmentation fault. > > > > > > > > I compile and run u-boot on my development machine with Fedora 28. > > > > - for the latest u-boot code on master branch I receive segmentation > > fault (refer to latest_u-boot_master_branch.log in attachment) > > > > After setting CONFIG_TRACE_EARLY_SIZE to 8725512 in > > “include/configs/sandbox.h” file, I receive different segmentation fault > > (refer to latest_u-boot_maseter_branch_1.log in attachment). > > > > > > > > What I do wrong? > > (Please always send emails to the mailing list - it is OK to cc me but it > should go to this list. In this instance I'm copying the list in the reply.) > > I found that the early console conflicts with the early trace buffer, which > causes the segfault. Also the early trace buffer as given in sandbox.h is too > small (although you got around that one). > > I've sent some patches to fix this and a few other things I think could be > improved. Thanks for the report. > > Regards, > Simon > > > > > > > > > > Andrzej Witkowski > > > > NSG Poland > > > > Host Storage SW & FW Development > > > > > > > > Intel Technology Poland > > > > ul. Slowackiego 173 > > > > 80-298 Gdansk > > > > Poland > > > > > > > > --------------------------------------------------------------------- > > Intel Technology Poland sp. z o.o. > > ul. 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