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

[Tom Rini]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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 at 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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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=tpnc
-----END PGP SIGNATURE-----