As mentioned at: https://www.mail-archive.com/gem5-dev@gem5.org/msg24593.html you need to:
- use the ARM linux kernel fork from: https://gem5.googlesource.com/arm/linux/+/refs/heads/gem5/v4.15 in particular the GICv2 extension script commit - hack up gem5: - fs.py to set `root.system.realview.gic.gem5_extensions = True` - generate a 32 / 64 / etc. dtb if needed (16 already built by default) The following patch will do both: ``` diff --git a/configs/example/fs.py b/configs/example/fs.py index 4031fd05e..51dd1d4ff 100644 --- a/configs/example/fs.py +++ b/configs/example/fs.py @@ -395,5 +395,6 @@ if buildEnv['TARGET_ISA'] == "arm" and options.generate_dtb: sys = getattr(root, sysname) sys.dtb_filename = create_dtb_for_system(sys, '%s.dtb' % sysname) +root.system.realview.gic.gem5_extensions = True Simulation.setWorkCountOptions(test_sys, options) Simulation.run(options, root, test_sys, FutureClass) diff --git a/system/arm/dt/Makefile b/system/arm/dt/Makefile index 62cf65f27..66f17a3c4 100644 --- a/system/arm/dt/Makefile +++ b/system/arm/dt/Makefile @@ -38,6 +38,8 @@ TARGETS=\ armv8_gem5_v1_1cpu.dtb armv8_gem5_v1_2cpu.dtb \ armv8_gem5_v1_4cpu.dtb armv8_gem5_v1_8cpu.dtb \ armv8_gem5_v1_16cpu.dtb \ + armv8_gem5_v1_32cpu.dtb \ + armv8_gem5_v1_64cpu.dtb \ armv8_gem5_v1_big_little_2_2.dtb \ armv8_gem5_v1_big_little_2_4.dtb diff --git a/system/arm/dt/armv8.dts b/system/arm/dt/armv8.dts index 9e07decbd..ddef086a4 100644 --- a/system/arm/dt/armv8.dts +++ b/system/arm/dt/armv8.dts @@ -105,6 +105,150 @@ CPU(15) #endif #if CONF_CPUS > 16 + CPU(16) + #endif + #if CONF_CPUS > 17 + CPU(17) + #endif + #if CONF_CPUS > 18 + CPU(18) + #endif + #if CONF_CPUS > 19 + CPU(19) + #endif + #if CONF_CPUS > 20 + CPU(20) + #endif + #if CONF_CPUS > 21 + CPU(21) + #endif + #if CONF_CPUS > 22 + CPU(22) + #endif + #if CONF_CPUS > 23 + CPU(23) + #endif + #if CONF_CPUS > 24 + CPU(24) + #endif + #if CONF_CPUS > 25 + CPU(25) + #endif + #if CONF_CPUS > 26 + CPU(26) + #endif + #if CONF_CPUS > 27 + CPU(27) + #endif + #if CONF_CPUS > 28 + CPU(28) + #endif + #if CONF_CPUS > 29 + CPU(29) + #endif + #if CONF_CPUS > 30 + CPU(30) + #endif + #if CONF_CPUS > 31 + CPU(31) + #endif + #if CONF_CPUS > 32 + CPU(32) + #endif + #if CONF_CPUS > 33 + CPU(33) + #endif + #if CONF_CPUS > 34 + CPU(34) + #endif + #if CONF_CPUS > 35 + CPU(35) + #endif + #if CONF_CPUS > 36 + CPU(36) + #endif + #if CONF_CPUS > 37 + CPU(37) + #endif + #if CONF_CPUS > 38 + CPU(38) + #endif + #if CONF_CPUS > 39 + CPU(39) + #endif + #if CONF_CPUS > 40 + CPU(40) + #endif + #if CONF_CPUS > 41 + CPU(41) + #endif + #if CONF_CPUS > 42 + CPU(42) + #endif + #if CONF_CPUS > 43 + CPU(43) + #endif + #if CONF_CPUS > 44 + CPU(44) + #endif + #if CONF_CPUS > 45 + CPU(45) + #endif + #if CONF_CPUS > 46 + CPU(46) + #endif + #if CONF_CPUS > 47 + CPU(47) + #endif + #if CONF_CPUS > 48 + CPU(48) + #endif + #if CONF_CPUS > 49 + CPU(49) + #endif + #if CONF_CPUS > 50 + CPU(50) + #endif + #if CONF_CPUS > 51 + CPU(51) + #endif + #if CONF_CPUS > 52 + CPU(52) + #endif + #if CONF_CPUS > 53 + CPU(53) + #endif + #if CONF_CPUS > 54 + CPU(54) + #endif + #if CONF_CPUS > 55 + CPU(55) + #endif + #if CONF_CPUS > 56 + CPU(56) + #endif + #if CONF_CPUS > 57 + CPU(57) + #endif + #if CONF_CPUS > 58 + CPU(58) + #endif + #if CONF_CPUS > 59 + CPU(59) + #endif + #if CONF_CPUS > 60 + CPU(60) + #endif + #if CONF_CPUS > 61 + CPU(61) + #endif + #if CONF_CPUS > 62 + CPU(62) + #endif + #if CONF_CPUS > 63 + CPU(63) + #endif + #if CONF_CPUS > 64 #error Unsupported number of CPUs #endif }; ``` (generated with vim macros and Ctrl-a :-)) I have just confirmed that this procedure works. fs_bigLITTLE.py apparently can automatically generate the DTBs without the ugly patch. On Tue, May 8, 2018 at 11:09 PM, Haiyang Han <haiyang....@eecs.northwestern.edu> wrote: > Hi all, > > I'm experiencing problems trying to boot up a 16-core ARM system. The > command line I'm using is: > /home/hhu010/tools/gem5/build/ARM/gem5.opt > /home/hhu010/tools/gem5/configs/example/fs.py > --disk-image=/home/hhu010/tools/arm-gem5-rsk/fs_files/disks/aarch64-parsec-3.0-all.img > --caches --l2cache --machine-type=VExpress_GEM5_V1 -n 16 > > I can boot up with 1, 2 ,4 and 8 cores but with 16 cores, the terminal > doesn't output anything. > > Does anyone have a similar problem? > > Thanks, > Haiyang > > _______________________________________________ > 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
