[U-Boot] [PATCH] am33xx: Enable D-CACHE on !CONFIG_SYS_DCACHE_OFF

[Tom Rini <trini@ti.com>]

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On 08/30/2013 12:50 AM, Sricharan R wrote:
> Hi Tom,
> 
> On Friday 23 August 2013 09:56 PM, Tom Rini wrote:
>> Test on Beaglebone white over cpsw, usb ether and SD card (read and
>> write), performance increased, crc32 of data matches.
>>
>> Signed-off-by: Tom Rini <trini@ti.com>
>> ---
>>  arch/arm/cpu/armv7/am33xx/board.c |    8 ++++++++
>>  1 file changed, 8 insertions(+)
>>
>> diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c
>> index 2ea3d69..c261af5 100644
>> --- a/arch/arm/cpu/armv7/am33xx/board.c
>> +++ b/arch/arm/cpu/armv7/am33xx/board.c
>> @@ -225,3 +225,11 @@ void s_init(void)
>>  	sdram_init();
>>  #endif
>>  }
>> +
>> +#ifndef CONFIG_SYS_DCACHE_OFF
>> +void enable_caches(void)
>> +{
>> +	/* Enable D-cache. I-cache is already enabled in start.S */
>> +	dcache_enable();
>> +}
>> +#endif /* !CONFIG_SYS_DCACHE_OFF */
>  This is fine. Do we have secure devices here ?
> 
>  If so, we should take care of setting the domains permissions for
>  avoiding prefetch aborts. As it was done for OMAP using
>  arm_init_domains. So that function and the above should be executed on
>  am33xx as well.
> 
>  Thanks to Lokesh for reminding this.

Yes, but I can't easily test them.  I'll see if arm_init_domains just
works on non-HS devices (I know I had a failure pulling all the OMAP4
code over, but didn't try hard, just looked again at the "easy" path).

- -- 
Tom
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