在 2014年6月26日星期四UTC+8下午3时27分07秒,Hans de Goede写道:
>
> Hi, 
>
> On 06/26/2014 07:40 AM, zuob...@gmail.com <javascript:> wrote: 
> > I booting linux-3.15 on pcDuino V3(A20 onboard). 
> > 1,second CPU failed,I used 
> https://github.com/jwrdegoede/u-boot-sunxi,then fixed it. 
> > 2,missing clock-frequency property 
>
> Those messages can be safely ignored. 
>
does not affect the performance of the system in the end? 

>
> Regards, 
>
> Hans 
>
> > The following is a useful log 
> > [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, 
> Nodes=1 
> > [    0.000000] Hierarchical RCU implementation. 
> > [    0.000000]         RCU restricting CPUs from NR_CPUS=4 to 
> nr_cpu_ids=2. 
> > [    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, 
> nr_cpu_ids=2 
> > [    0.000000] NR_IRQS:16 nr_irqs:16 16 
> > [    0.000000] Architected cp15 timer(s) running at 24.00MHz (phys). 
> > [    0.000007] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps 
> every 2863311519744ns 
> > [    0.000014] Switching to timer-based delay loop 
> > [    0.000281] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps 
> every 178956969942ns 
> > [    0.000402] sched_clock: 32 bits at 160MHz, resolution 6ns, wraps 
> every 26843545593ns 
> > [    0.000553] Console: colour dummy device 80x30 
> > [    0.000581] Calibrating delay loop (skipped), value calculated using 
> timer frequency.. 48.00 BogoMIPS (lpj=240000) 
> > [    0.000593] pid_max: default: 32768 minimum: 301 
> > [    0.000701] Mount-cache hash table entries: 2048 (order: 1, 8192 
> bytes) 
> > [    0.000712] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 
> bytes) 
> > [    0.001230] CPU: Testing write buffer coherency: ok 
> > [    0.001486] /cpus/cpu@0 missing clock-frequency property 
> > [    0.001503] /cpus/cpu@1 missing clock-frequency property 
> > [    0.001514] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 
> > [    0.001541] Setting up static identity map for 0x404755e0 - 
> 0x40475638 
> > [    0.002624] CPU1: Booted secondary processor 
> > [    0.002665] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 
> > [    0.002769] Brought up 2 CPUs 
> > [    0.002789] SMP: Total of 2 processors activated. 
> > [    0.002795] CPU: All CPU(s) started in HYP mode. 
> > [    0.002800] CPU: Virtualization extensions available. 
> > [    0.003351] devtmpfs: initialized 
> > [    0.006961] VFP support v0.3: implementor 41 architecture 2 part 30 
> variant 7 rev 4 
> > [    0.007171] pinctrl core: initialized pinctrl subsystem 
> > [    0.007357] regulator-dummy: no parameters 
> > [    0.011695] NET: Registered protocol family 16 
> > [    0.011962] DMA: preallocated 256 KiB pool for atomic coherent 
> allocations 
> > [    0.020704] vcc3v0: 3000 mV 
> > [    0.020865] vcc3v3: 3300 mV 
> > 
> > also I can see /proc/cpuinfo 
> > # cat /proc/cpuinfo 
> > processor        : 0 
> > model name        : ARMv7 Processor rev 4 (v7l) 
> > Features        : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 
> idiva idivt vfpd32 lpae evtstrm 
> > CPU implementer        : 0x41 
> > CPU architecture: 7 
> > CPU variant        : 0x0 
> > CPU part        : 0xc07 
> > CPU revision        : 4 
> > 
> > processor        : 1 
> > model name        : ARMv7 Processor rev 4 (v7l) 
> > Features        : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 
> idiva idivt vfpd32 lpae evtstrm 
> > CPU implementer        : 0x41 
> > CPU architecture: 7 
> > CPU variant        : 0x0 
> > CPU part        : 0xc07 
> > CPU revision        : 4 
> > 
> > Hardware        : Allwinner sun7i (A20) Family 
> > Revision        : 0000 
> > Serial                : 0000000000000000 
> > 
> > is there some way to fixed it? 
> > 
>

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