On 10/15/19 1:29 PM, Giorgio Dal Molin wrote: > Hi, > > can anyone please confirm that a recent barebox version (v2019.10 or v2019.09) > is able to boot a linux kernel so that it can enable the second cpu core ?
If you #define DEBUG in arch/arm/cpu/psci.c, a smc command is enabled that can be used to test ARM_PSCI_0_2_CPU_ON. This might aid you in your debug effort. Cheers Ahmad > It actually used to work in the past but now I only get one core running: > > Loading ARM Linux zImage '/mnt/boot/kernel.img' > Loading devicetree from '/mnt/boot/devtree.dtb' > commandline: console=ttymxc0,115200n8 > ip=11.0.0.4::11.0.0.2:255.0.0.0:armgdm:eth0: > root=PARTUUID=abd2f9f6-88e5-4657-a5fb-aeb2cc6fde7e rootwait > video=HDMI-A-1:1024x768M@60 console=tty1 > Starting kernel in nonsecure mode > [ 0.000000] 000: Booting Linux on physical CPU 0x0 > [ 0.000000] 000: Linux version 5.2.19-rt11-00268-g0308d71d8410-dirty > (giorgio@BVblfs) (gcc version 9.2.1 20190813 (OSELAS.Toolchain 9.2.1)) #1 SMP > PREEMPT RT Thu Oct 10 07:50:01 CEST 2019 > [ 0.000000] 000: CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), > cr=10c5387d > [ 0.000000] 000: CPU: div instructions available: patching division code > [ 0.000000] 000: CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing > instruction cache > [ 0.000000] 000: OF: fdt: Machine model: Freescale i.MX7 SabreSD Board > [ 0.000000] 000: Memory policy: Data cache writealloc > [ 0.000000] 000: cma: Reserved 64 MiB at 0xac000000 > [ 0.000000] 000: percpu: Embedded 10 pages/cpu s19296 r0 d21664 u40960 > [ 0.000000] 000: Built 1 zonelists, mobility grouping on. Total pages: > 260608 > [ 0.000000] 000: Kernel command line: console=ttymxc0,115200n8 > ip=11.0.0.4::11.0.0.2:255.0.0.0:armgdm:eth0: > root=PARTUUID=abd2f9f6-88e5-4657-a5fb-aeb2cc6fde7e rootwait > video=HDMI-A-1:1024x768M@60 console=tty1 > [ 0.000000] 000: Dentry cache hash table entries: 131072 (order: 8, > 1048576 bytes) > [ 0.000000] 000: Inode-cache hash table entries: 65536 (order: 6, 262144 > bytes) > [ 0.000000] 000: Memory: 958252K/1048576K available (9216K kernel code, > 403K rwdata, 2308K rodata, 1024K init, 719K bss, 24788K reserved, 65536K > cma-reserved, 261700K highmem) > [ 0.000000] 000: SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 > [ 0.000000] 000: rcu: Preemptible hierarchical RCU implementation. > [ 0.000000] 000: rcu: RCU priority boosting: priority 1 delay 500 > ms. > [ 0.000000] 000: rcu: RCU_SOFTIRQ processing moved to rcuc kthreads. > [ 0.000000] 000: No expedited grace period (rcu_normal_after_boot). > [ 0.000000] 000: Tasks RCU enabled. > [ 0.000000] 000: rcu: RCU calculated value of scheduler-enlistment delay > is 10 jiffies. > [ 0.000000] 000: NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 > [ 0.000000] 000: rcu: Offload RCU callbacks from CPUs: (none). > [ 0.000000] 000: arch_timer: cp15 timer(s) running at 8.00MHz (virt). > [ 0.000000] 000: clocksource: arch_sys_counter: mask: 0xffffffffffffff > max_cycles: 0x1d854df40, max_idle_ns: 440795202120 ns > [ 0.000001] 000: sched_clock: 56 bits at 8MHz, resolution 125ns, wraps > every 2199023255500ns > [ 0.000012] 000: Switching to timer-based delay loop, resolution 125ns > [ 0.000433] 000: Switching to timer-based delay loop, resolution 41ns > [ 0.000445] 000: sched_clock: 32 bits at 24MHz, resolution 41ns, wraps > every 89478484971ns > [ 0.000456] 000: clocksource: mxc_timer1: mask: 0xffffffff max_cycles: > 0xffffffff, max_idle_ns: 79635851949 ns > [ 0.001625] 000: Console: colour dummy device 80x30 > [ 0.001638] 000: printk: console [tty1] enabled > [ 0.001673] 000: Calibrating delay loop (skipped), value calculated using > timer frequency.. 48.00 BogoMIPS (lpj=240000) > [ 0.001680] 000: pid_max: default: 32768 minimum: 301 > [ 0.001816] 000: Mount-cache hash table entries: 2048 (order: 1, 8192 > bytes) > [ 0.001833] 000: Mountpoint-cache hash table entries: 2048 (order: 1, 8192 > bytes) > [ 0.002543] 000: CPU: Testing write buffer coherency: ok > [ 0.002896] 000: CPU0: update cpu_capacity 1024 > [ 0.002908] 000: CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 > [ 0.060000] 000: Setting up static identity map for 0x80100000 - 0x8010003c > [ 0.079971] 000: rcu: Hierarchical SRCU implementation. > [ 0.160105] 000: smp: Bringing up secondary CPUs ... > [ 0.280352] 000: smp: Brought up 1 node, 1 CPU > [ 0.280362] 000: SMP: Total of 1 processors activated (48.00 BogoMIPS). > [ 0.280370] 000: CPU: All CPU(s) started in SVC mode. > [ 0.281280] 000: devtmpfs: initialized > > giorgio > > _______________________________________________ > barebox mailing list > barebox@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox > -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
