Question about mtrr test

[Colin Ian King]

On 14/07/16 10:58, Dong, Eric wrote:
> Hi,
> 
>  
> 
> I use Fwts to test the uefi bios, it reported below errors:
> 
>  
> 
> mtrr           ;HED mtrr: MTRR tests.
> 
> mtrr           ;SEP
> ------------------------------------------------------------
> 
> mtrr           ;INF MTRR overview
> 
> mtrr           ;INF -------------
> 
> mtrr           ;INF Reg 0: 0x00000000c0000000 - 0x0000000100000000 ( 
> 1024 MB)   Uncached
> 
> mtrr           ;INF Reg 1: 0x00000000bf800000 - 0x00000000c0000000 (    
> 8 MB)   Uncached
> 
> mtrr           ;NLN
> 
> mtrr           ;INF Test 1 of 3: Validate the kernel MTRR IOMEM setup.
> 
> mtrr           ;FAL FAILED [MEDIUM] MTRRIncorrectAttr: Test 1, Memory range
> 
> mtrr           ;FAL 0x1000 to 0x5efff (System RAM) has incorrect attribute
> 
> mtrr           ;FAL Default (Most probably Uncached).
> 
> mtrr           ;FAL FAILED [MEDIUM] MTRRLackingAttr: Test 1, Memory
> range 0x1000
> 
> mtrr           ;FAL to 0x5efff (System RAM) is lacking attribute Write-Back.
> 
>  
> 
> But we already update the IA32_MTRR_DEF_TYPE (0x2FF) to set the default
> type to Write-Back. If update the IA32_MTRR_DEF_TYPE to set the default
> type to Uncached.  These errors will not occur. I think this is Fwts
> tools issue. It should check the default type from IA32_MTRR_DEF_TYPE
> before run this test.  Any feedback about it?
> 
>  
> 
> Thanks,
> 
> Eric
> 
> 
> 
> This body part will be downloaded on demand.
> 

Eric, which version of fwts are you using?