Hello Andreas,Haeyoon Cho, Andreas , thanks thi worked for me too. fs simulation on Arm with 16 CPUS.
I wanted to know if any one of you have tried GARNET on ARM? Inputs would really be helpful. I want to simulate a 4*4 mesh garnet system on ARM Thank you in advance. Regards, Sahana Prasad On Thu, Mar 8, 2018 at 4:46 PM, Andreas Sandberg <andreas.sandb...@arm.com> wrote: > New versions of gem5 also auto-generate DTBs. This requires support from > the simulation script, but that should already be implemented for the > configurations in configs/example/arm/ and fs.py. The latter might requires > that --generate-dtb is specified to enable this. Keep in mind that the > generated DTBs and the DTBs in system/arm/dt only work new kernels (version > 4.x and newer). > > Cheers, > Andreas > > On 07/03/2018 02:03, 조해윤 wrote: > > Thanks a lot. > It is great helpful to me. > > 2018-03-06 22:17 GMT+09:00 Ciro Santilli <ciro.santi...@gmail.com>: > >> Ah, nevermind, I had forgotten this, the dtbs are tracked inside the gem5 >> tree: >> >> https://github.com/gem5/gem5/blob/a66fe6a8c36c9ab49cb3a35065 >> bfc645d51036c8/system/arm/dt/armv8.dts >> >> an built with: >> >> make -C system/arm/dt >> >> The Makefile uses the cpp preprocessor to generate the dtbs with >> different core counts: >> https://github.com/gem5/gem5/blob/a66fe6a8c36c9ab49cb3a35065 >> bfc645d51036c8/system/arm/dt/Makefile#L48 >> >> So hacking up that Makefile is another good option to get your dtbs. >> >> On Tue, Mar 6, 2018 at 10:55 AM, Ciro Santilli <ciro.santi...@gmail.com> >> wrote: >> > Yes, if you don't modify the dtb, the Linux kernel won't see the >> > change in the number of CPUs change, this can be verified with cat >> > /proc/cpuinfo. >> > >> > You can modify the dtb directly by first converting it to dts human >> > readable form: https://stackoverflow.com/ques >> tions/14000736/tool-to-visualize-the-device-tree-file-dtb- >> used-by-the-linux-kernel/39931834#39931834 >> > and then doing the inverse operation. >> > >> > Normally the original source of the dts for ARM should be present on >> > the forked gem5 Linux kernel fork: >> > https://gem5.googlesource.com/arm/linux/+/917e007a4150d26a0a >> a95e4f5353ba72753669c7/arch/arm/boot/dts/ >> > but I can't find if easily for some reason, only >> > vexpress-v2p-ca15-tc1.dts, maybe someone can clarify their origin. >> > >> > >> > On Tue, Mar 6, 2018 at 10:46 AM, 조해윤 <chohy2...@gmail.com> wrote: >> >> Dear, everyone. >> >> >> >> I try to full system simulation for ARM ISA. >> >> So, I downloaded the pre-compiled kernels and disk images >> >> (aarch-system-20170616.tar.xz) from the repository >> >> (http://www.gem5.org/dist/current/arm/). >> >> >> >> There are several dtb files like below. >> >> vexpress-v2p-ca15-tc1-gem5_1cpus.20170616.dtb >> >> vexpress-v2p-ca15-tc1-gem5_2cpus.20170616.dtb >> >> vexpress-v2p-ca15-tc1-gem5_4cpus.20170616.dtb >> >> >> >> However, not for 8 or 16 cpus. >> >> If I want to experiment 16-cpu configuration, I should modify the dtb >> file? >> >> >> >> If I should modify the dtb file, how I can do that? >> >> I found the documentations to build a kernel or to make a disk image. >> >> http://gem5.org/ARM_Kernel >> >> http://gem5.org/Ubuntu_Disk_Image_for_ARM_Full_System >> >> >> >> But, I couldn't find any documentation to modify the dtb file. >> >> Is there any documentation for the dtb file? >> >> >> >> Best regards, >> >> Haeyoon Cho. >> >> >> >> _______________________________________________ >> >> gem5-users mailing list >> >> gem5-users@gem5.org >> >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> _______________________________________________ >> gem5-users mailing list >> gem5-users@gem5.org >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> > > > > _______________________________________________ > gem5-users mailing > listgem5-users@gem5.orghttp://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > > IMPORTANT NOTICE: The contents of this email and any attachments are > confidential and may also be privileged. If you are not the intended > recipient, please notify the sender immediately and do not disclose the > contents to any other person, use it for any purpose, or store or copy the > information in any medium. Thank you. > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >
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