Hi Gilles,

i added this in configure of xenomai so i pass --enable-arm-mach=imx25

imx25)        arch=5
             tsc_type=__XN_TSC_TYPE_FREERUNNING;;

Furthermore in plat-mxc/include/mach/mxc.h explain which are cpumx2 and 
imx25 is NOT mx2
#define cpu_is_mx2()    (cpu_is_mx21() || cpu_is_mx27())

i don't understand a things.
Does the tsc necessary to calculate correct timer period, or can i 
disable tsc and xenomai continue work correctly ?

However i cannot use tsc in my simple application. I resend the simple C 
application that doesn't work.


Il 10/04/2012 13:25, Gilles Chanteperdrix ha scritto:
> On 04/10/2012 12:39 PM, Roberto Bielli wrote:
>> Hi Gilles,
>>
>> i tried your code but th behavior is the same.
>>
>> Then i tried a linux base app and works correctly.
> The tsc physical address passed to user-space looks wrong.
>
> void __ipipe_mach_get_tscinfo(struct __ipipe_tscinfo *info)
> {
> 	info->type = IPIPE_TSC_TYPE_FREERUNNING;
> 	if (cpu_is_mx1()) {
> #ifdef CONFIG_ARCH_MX1
> 		info->u.fr.counter = (unsigned *) (TIM1_BASE_ADDR + MX1_2_TCN);
> #endif
> 	} else if (cpu_is_mx2()) {
> #ifdef CONFIG_ARCH_MX2
> 		info->u.fr.counter = (unsigned *) (GPT1_BASE_ADDR + MX1_2_TCN);
> #endif
> 	} else if (cpu_is_mx3() || cpu_is_mx25() ) {
> #if defined CONFIG_ARCH_MX3 || defined CONFIG_ARCH_MX25
> 		info->u.fr.counter = (unsigned *) (GPT1_BASE_ADDR + MX3_TCN);
> #endif
> 	}
> 	info->u.fr.mask = 0xffffffff;
> 	info->u.fr.tsc =&tsc->full;
> }
>
> Here cpu_is_mx2() will return true, and we will not go to cpu_is_mx25().
>
> Are you using the tsc in user-space?
>
> If you are passing --enable-arm-mach=mx2 to xenomai configure
> script, you are using the tsc in user-space, and it is a wonder
> how it works.
>


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