[U-Boot] [PATCH 3/3] armv8/cache: Change cache invalidate and flush function

[York Sun]

On 02/12/2014 08:04 PM, FengHua wrote:
> 
> 
> 
>> -----Original Messages-----
>> From: "York Sun" <yorksun at freescale.com>
>> Sent Time: 2014-02-11 05:55:54 (Tuesday)
>> To: albert.u.boot at aribaud.net
>> Cc: scottwood at freescale.com, "York Sun" <yorksun at freescale.com>, "David Feng" <fenghua at phytium.com.cn>
>> Subject: [PATCH 3/3] armv8/cache: Change cache invalidate and flush function
>>

<snip>

>> diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S
>> index e70c51d..7b9ac21 100644
>> --- a/arch/arm/cpu/armv8/start.S
>> +++ b/arch/arm/cpu/armv8/start.S
>> @@ -65,9 +65,9 @@ reset:
>>  0:
>>  
>>  	/* Cache/BPB/TLB Invalidate */
>> -	bl	__asm_flush_dcache_all		/* dCache clean&invalidate */
>>  	bl	__asm_invalidate_icache_all	/* iCache invalidate */
>>  	bl	__asm_invalidate_tlb_all	/* invalidate TLBs */
> How about remove the icache and tlb invalidate operations?

We can move the calling of __asm_invalidate_tlb_all to before mmu_setup, and
move calling __asm_invalidate_icache_all to before icache_enable. But leaving
them here makes sense as the initial setup procedure. And more important, it
won't get lost. These functions run very fast, not like invalidating dcache.

York