On 15 Jun 2014, at 17:13, Mark R V Murray <ma...@freebsd.org> wrote:
>
> On 30 May 2014, at 09:42, Michael Tuexen <tue...@fh-muenster.de> wrote:
>
>> On 29 May 2014, at 21:21, Mark R V Murray <ma...@freebsd.org> wrote:
>>
>>>
>>> On 29 May 2014, at 19:27, Michael Tuexen <tue...@fh-muenster.de> wrote:
>>>
>>>> On 29 May 2014, at 20:15, Mark R V Murray <ma...@freebsd.org> wrote:
>>>>
>>>>>
>>>>> On 29 May 2014, at 19:13, Michael Tuexen <tue...@fh-muenster.de> wrote:
>>>>>
>>>>>>> I can make it work on RPI, but trying to find what else it will/won’t
>>>>>>> work on is more problematic.
>>>>>> Wouldn't it require to use different registers on the RPI? This would
>>>>>> mean you
>>>>>> would need more #ifdefs…
>>>>>
>>>>> Thats the problem; too many #ifdefs.
>>>> So you could just keep the code for now, but reduce the #ifdefs to the
>>>> ones you
>>>> know that work. Later on, you can replace it by the driver stuff…
>>>
>>> That’s what I was thinking, yes.
>> Great. Let me know if you need testing support on the RPI…
>
> I’ve come to the conclusion that my RPI-B is hosed. It doesn’t even boot
> Raspian properly. Sorry about how long this has taken.
>
> Please could someone with a working RPI please check that the following patch
> works (may need to apply by hand due to cut/paste).
>
> Thanks, with repeated apologies.
I can test it and report if it works. It might take until tomorrow...
Thanks for working on a fix!
Best regards
Michael
>
> M
> --
> Mark R V Murray
>
> --- include/cpu.h (revision 267507)
> +++ include/cpu.h (working copy)
> @@ -25,7 +25,16 @@
> * Read PMCCNTR. Curses! Its only 32 bits.
> * TODO: Fix this by catching overflow with interrupt?
> */
> +/* The ARMv6 vs ARMv7 divide is going to need a better way of
> + * distinguishing between them.
> + */
> +#if defined(CPU_ARM1136) || defined(CPU_ARM1176)
> + /* ARMv6 - Earlier model SCCs */
> + __asm __volatile("mrc p15, 0, %0, c15, c12, 1": "=r" (ccnt));
> +#else
> + /* ARMv7 - Later model SCCs */
> __asm __volatile("mrc p15, 0, %0, c9, c13, 0": "=r" (ccnt));
> +#endif
> ccnt64 = (uint64_t)ccnt;
> return (ccnt64);
> #else /* No performance counters, so use binuptime(9). This is slooooow */
>
>
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