[U-Boot] [PATCH v6 01/10] mips: implement to access the KSEG0/1 memory range in map_physmem

[Wills Wang]

On 01/05/2016 10:45 AM, Thomas Chou wrote:
> Hi Wills,
>
> On 2016年01月04日 19:14, Wills Wang wrote:
>> U-boot just use the no MMU virtual address segment(KSEG0/1), this
>> patch enable access the uncached memory range(KSEG1) by flag
>> "MAP_NOCACHE", other flag for KSEG0 access.
>>
>> Signed-off-by: Wills Wang <wills.wang at live.com>
>> ---
>>
>> Changes in v6:
>> - Remove useless "else"
>>
>> Changes in v5: None
>> Changes in v4: None
>> Changes in v3: None
>> Changes in v2: None
>>
>>   arch/mips/include/asm/io.h | 6 ++++--
>>   1 file changed, 4 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
>> index a7ab087..77353e5 100644
>> --- a/arch/mips/include/asm/io.h
>> +++ b/arch/mips/include/asm/io.h
>> @@ -485,7 +485,7 @@ static inline void sync(void)
>>    * that can be used to access the memory range with the caching
>>    * properties specified by "flags".
>>    */
>> -#define MAP_NOCACHE    (0)
>> +#define MAP_NOCACHE    (1)
>>   #define MAP_WRCOMBINE    (0)
>>   #define MAP_WRBACK    (0)
>>   #define MAP_WRTHROUGH    (0)
>> @@ -493,7 +493,9 @@ static inline void sync(void)
>>   static inline void *
>>   map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
>>   {
>> -    return (void *)paddr;
>> +    if (flags)
>> +        return (void *)KSEG1ADDR(paddr);
>> +    return (void *)KSEG0ADDR(paddr);
>>   }
>>
>>   /*
>>
>
> But Daniel has suggested CKSEG1ADDR() instead. :)
>
I'm so sorry, i missed Daniel's email.
I will correct in the next patch.
Thomas, thank you for reminding me, or i lost an important information.
> Best regards,
> Thomas

-- 
Best Regards
Wills