[Xenomai-help] a problem about Calibrating delay loop...

[Xenomai-help] a problem about Calibrating delay loop...

[费朱青]

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HI all,

     I am porting xenomai-2.5.1 to arm architecture(Samsung S3C2440).Everything is ok when I do patch and compile.But the board start up,console lock and say"calbrating delay loop...".(before patch xenomai into kernel,the kernel image can work well)

     Xenomai say that it supports "S3C24xx family" ,but I always meet this problem.

     Someone said the timer interrupt does not work,I don't know how to watch it and work out this problem.

     Do you know some methods that can  solve it ? 

thanks

justin fei
 		 	   		  
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Re: [Xenomai-help] a problem about Calibrating delay loop...

[Gilles Chanteperdrix]

费朱青 wrote:
> HI all,
> 
> I am porting xenomai-2.5.1 to arm architecture(Samsung
> S3C2440).Everything is ok when I do patch and compile.But the board
> start up,console lock and say"calbrating delay loop...".(before patch
> xenomai into kernel,the kernel image can work well)
> 
> Xenomai say that it supports "S3C24xx family" ,but I always meet this
> problem.
> 
> Someone said the timer interrupt does not work,I don't know how to
> watch it and work out this problem.
> 
> Do you know some methods that can  solve it ?

You are the second person to report this issue:
https://mail.gna.org/public/adeos-main/2010-02/msg00013.html

Not having the hardware, I can not debug this myself. I can not tell you
more than what I already told Michel.

-- 
					    Gilles.

Re: [Xenomai-help] a problem about Calibrating delay loop...

[Jonata Apolinario]

费朱青 <mouse19875 <at> hotmail.com> writes:

> 
> 
> HI all,
>      I am porting xenomai-2.5.1 to arm architecture(Samsung
S3C2440).Everything is ok when I do patch and compile.But the board start
up,console lock and say"calbrating delay loop...".(before patch xenomai into
kernel,the kernel image can work well)
>      Xenomai say that it supports "S3C24xx family" ,but I always meet this
problem.
>      Someone said the timer interrupt does not work,I don't know how to watch
it and work out this problem.
>      Do you know some methods that can  solve it ? 
> thanks
> justin fei更多热辣资讯尽在新版MSN首页！ 立刻访问！
> 
> 
> _______________________________________________
> Xenomai-help mailing list
> Xenomai-help <at> gna.org
> https://mail.gna.org/listinfo/xenomai-help
> 


Hi!
well, i think i solved.
i found in arch/arm/plat-s3c/time.c:
the path inserted these lines:

tcfg1 = __raw_readl(S3C2410_TCFG1);
tcfg1 &= ~(S3C2410_TCFG1_MUX4_MASK | S3C2410_TCFG1_MUX3_MASK);
tcfg1 |= (S3C2410_TCFG1_MUX4_TCLK1 | S3C2410_TCFG1_MUX3_TCLK1);
__raw_writel(tcfg1, S3C2410_TCFG1);

in the function "static void s3c2410_timer_setup (void)"
in the "else" side of the "if (use_tclk1_12())"
use_tclk1_12 as i can see is to use external clock on pin clk1.
the patch put these lines in the else too, that as i can see, is wrong.
i removed these lines from the ELSE side and the kernel passed by this point.

see if it solves your problem and post your results.
 Thanks!

Re: [Xenomai-help] a problem about Calibrating delay loop...

[Gilles Chanteperdrix]

Jonata Apolinario wrote:
> 费朱青 <mouse19875 <at> hotmail.com> writes:
> 
>>
>> HI all,
>>      I am porting xenomai-2.5.1 to arm architecture(Samsung
> S3C2440).Everything is ok when I do patch and compile.But the board start
> up,console lock and say"calbrating delay loop...".(before patch xenomai into
> kernel,the kernel image can work well)
>>      Xenomai say that it supports "S3C24xx family" ,but I always meet this
> problem.
>>      Someone said the timer interrupt does not work,I don't know how to watch
> it and work out this problem.
>>      Do you know some methods that can  solve it ? 
>> thanks
>> justin fei更多热辣资讯尽在新版MSN首页！ 立刻访问！
>>
>>
>> _______________________________________________
>> Xenomai-help mailing list
>> Xenomai-help <at> gna.org
>> https://mail.gna.org/listinfo/xenomai-help
>>
> 
> 
> Hi!
> well, i think i solved.
> i found in arch/arm/plat-s3c/time.c:
> the path inserted these lines:
> 
> tcfg1 = __raw_readl(S3C2410_TCFG1);
> tcfg1 &= ~(S3C2410_TCFG1_MUX4_MASK | S3C2410_TCFG1_MUX3_MASK);
> tcfg1 |= (S3C2410_TCFG1_MUX4_TCLK1 | S3C2410_TCFG1_MUX3_TCLK1);
> __raw_writel(tcfg1, S3C2410_TCFG1);
> 
> in the function "static void s3c2410_timer_setup (void)"
> in the "else" side of the "if (use_tclk1_12())"
> use_tclk1_12 as i can see is to use external clock on pin clk1.
> the patch put these lines in the else too, that as i can see, is wrong.
> i removed these lines from the ELSE side and the kernel passed by this point.
> 
> see if it solves your problem and post your results.

This issue is fixed in Xenomai 2.5.3.

-- 
					    Gilles.