Because of some of the recent changes to aarch64 in gem5, you need to use a newer kernel and dtb file. Instructions for how to obtain them are here:
http://gem5.org/ARM_Linux_Kernel I think we will be releasing tarballs with newer kernels/images soon. Anthony Gutierrez http://web.eecs.umich.edu/~atgutier On Tue, Oct 21, 2014 at 3:29 PM, Meng Wang via gem5-users < gem5-users@gem5.org> wrote: > Hello, > I tried to run full system simulation for arm64 architecture. I used the > latest gem5 simulator and downloaded prebuilt full system image from gem5 > website. The command line I used is: > > $ ../gem5/build/ARM/gem5.opt ../gem5/configs/example/fs.py > --machine-type=VExpress_EMM64 --kernel=vmlinux-3.14-aarch64-vexpress-emm64 > --disk-image=linaro-minimal-armv8.img --dtb-filename=rtsm_ve-aemv8a.dtb > ... > Global frequency set at 1000000000000 ticks per second > info: kernel located at: > /home/wmeng/workspace/livesp/m5_images/binaries/vmlinux-3.14-aarch64-vexpress-emm64 > warn: Highest ARM exception-level set to AArch32 but bootloader is for > AArch64. Assuming you wanted these to match. > Listening for system connection on port 5900 > Listening for system connection on port 3456 > 0: system.cpu.isa: ISA system set to: 0x4a0e540 0x4a0e540 > 0: system.remote_gdb.listener: listening for remote gdb #0 on port 7001 > info: Using bootloader at address 0x10 > info: Using kernel entry physical address at 0x80080040 > info: Loading DTB file: > /home/wmeng/workspace/livesp/m5_images/binaries/rtsm_ve-aemv8a.dtb at > address 0x88000000 > **** REAL SIMULATION **** > warn: Existing EnergyCtrl, but no enabled DVFSHandler found. > info: Entering event queue @ 0. Starting simulation... > warn: SCReg: Writing 0 to dcc0:site0:pos0:fn7:dev0 > 4101426500: system.terminal: attach terminal 0 > warn: Tried to read RealView I/O at offset 0x60 that doesn't exist > warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist > 10133760032500: system.cpu.break_event: break event panic triggered > 10133760033000: system.cpu.break_event: break event panic triggered > 10133760033500: system.cpu.break_event: break event panic triggered > 10133760034000: system.cpu.break_event: break event panic triggered > > I set up the M5_PATH environment variable, and put the kernel and dtb > files in <m5_path>/binaries/, put rootfs image file in <m5_path>/disks/. > Thus I only specify file name instead of full path in command line. > > m5term shows the following error: > ... > [ 0.047510] TCP: cubic registered > [ 0.047511] NET: Registered protocol family 17 > [ 0.642521] input: AT Raw Set 2 keyboard as > /devices/smb.2/motherboard.3/iofpga.7/1c060000.kmi/serio0/input/input0 > [ 2.542532] input: PS/2 Generic Mouse as > /devices/smb.2/motherboard.3/iofpga.7/1c070000.kmi/serio1/input/input2 > [ 2.542570] VFS: Cannot open root device "sda1" or unknown-block(0,0): > error -6 > [ 2.542571] Please append a correct "root=" boot option; here are the > available partitions: > [ 2.542572] Kernel panic - not syncing: VFS: Unable to mount root fs on > unknown-block(0,0) > [ 2.542573] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.0-rc2+ #1 > [ 2.542574] Call trace: > [ 2.542575] [<ffffffc000087d5c>] dump_backtrace+0x0/0x12c > [ 2.542576] [<ffffffc000087e9c>] show_stack+0x14/0x1c > [ 2.542577] [<ffffffc0004943a0>] dump_stack+0x78/0xc4 > [ 2.542578] [<ffffffc0004912dc>] panic+0xe8/0x208 > [ 2.542579] [<ffffffc000645d68>] mount_block_root+0x1d8/0x278 > [ 2.542580] [<ffffffc000645f20>] mount_root+0x118/0x134 > [ 2.542582] [<ffffffc00064607c>] prepare_namespace+0x140/0x188 > [ 2.542583] [<ffffffc0006459bc>] kernel_init_freeable+0x1b8/0x1d8 > [ 2.542584] [<ffffffc00048f5b4>] kernel_init+0x10/0xd4 > > Kernel panics on VFS mounting. > > When I changed dtb file to either rtsm_ve-aemv8a-2core.dtb or > rtsm_ve-aemv8a-4core.dtb, the kernel hangs after outputing following: > > ... > [ 0.000000] Virtual kernel memory layout: > [ 0.000000] vmalloc : 0xffffff8000000000 - 0xffffffbbffff0000 > (245759 MB) > [ 0.000000] vmemmap : 0xffffffbc01c00000 - 0xffffffbc02300000 ( > 7 MB) > [ 0.000000] modules : 0xffffffbffc000000 - 0xffffffc000000000 ( > 64 MB) > [ 0.000000] memory : 0xffffffc000000000 - 0xffffffc020000000 ( > 512 MB) > [ 0.000000] .init : 0xffffffc000645000 - 0xffffffc000687f40 ( > 268 kB) > [ 0.000000] .text : 0xffffffc000080000 - 0xffffffc000644104 ( > 5905 kB) > [ 0.000000] .data : 0xffffffc000688000 - 0xffffffc0006e3618 ( > 366 kB) > [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 > [ 0.000000] Preemptible hierarchical RCU implementation. > [ 0.000000] RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. > [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 > [ 0.000000] NR_IRQS:64 nr_irqs:64 0 > [ 0.000000] Architected cp15 timer(s) running at 100.00MHz (phys). > [ 0.007706] sched_clock: 56 bits at 100MHz, resolution 10ns, wraps > every 2748779069440ns > [ 0.000012] Console: colour dummy device 80x25 > [ 0.000013] Calibrating delay loop (skipped) preset value.. 3997.69 > BogoMIPS (lpj=19988480) > [ 0.000014] pid_max: default: 32768 minimum: 301 > [ 0.000026] Mount-cache hash table entries: 256 > [ 0.000086] hw perfevents: no hardware support available > > Could anyone help me? > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >
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