[OpenWrt-Devel] [PATCH] mvebu: fix the cortex-a9 fpu configure

[Ayaka]

Sent from my iPad

>> On Aug 30, 2018, at 2:26 PM, Jonas Gorski <jonas.gorski at gmail.com> wrote:
>> 
>> On 30 August 2018 at 04:31, ayaka <ayaka at soulik.info> wrote:
>> Both Marvell Armada 37x and 38x support NEON and VFPv3,
>> so we enable the NEON FPU with the SIMD aliases.
> 
> But the Armada XP doesn't, so this would break devices based on it
> (like the WRT1900AC v1).
I was wonder whether Armada XP supports NEON. I am glad to know it doesn't.
Anyway advice on separate the configure for WRT1900AC?
With the help of neon I think we can get a better performance on crypt app
locations such as OpenSSL and OpenVPN. It takes more benefit from the  compatible.
> 
> Regards
> Jonas
> 
>> 
>> Signed-off-by: ayaka <ayaka at soulik.info>
>> ---
>> include/target.mk                     | 1 +
>> target/linux/mvebu/cortexa9/target.mk | 2 +-
>> 2 files changed, 2 insertions(+), 1 deletion(-)
>> 
>> diff --git a/include/target.mk b/include/target.mk
>> index 53d7436311..330eb175cc 100644
>> --- a/include/target.mk
>> +++ b/include/target.mk
>> @@ -201,6 +201,7 @@ ifeq ($(DUMP),1)
>>       CPU_CFLAGS_neon = -mfpu=neon
>>       CPU_CFLAGS_vfp = -mfpu=vfp
>>       CPU_CFLAGS_vfpv3 = -mfpu=vfpv3-d16
>> +      CPU_CFLAGS_simd = -mfpu=neon-vfpv3
>>       CPU_CFLAGS_neon-vfpv4 = -mfpu=neon-vfpv4
>>     endif
>>   endif
>> diff --git a/target/linux/mvebu/cortexa9/target.mk b/target/linux/mvebu/cortexa9/target.mk
>> index 2a75599bc9..9e6119bf6b 100644
>> --- a/target/linux/mvebu/cortexa9/target.mk
>> +++ b/target/linux/mvebu/cortexa9/target.mk
>> @@ -10,5 +10,5 @@ include $(TOPDIR)/rules.mk
>> ARCH:=arm
>> BOARDNAME:=Marvell Armada 37x/38x/XP
>> CPU_TYPE:=cortex-a9
>> -CPU_SUBTYPE:=vfpv3
>> +CPU_SUBTYPE:=simd
>> KERNELNAME:=zImage dtbs
>> --
>> 2.14.4
>> 
>> 
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