[flashrom] When flashrom support Intel Purley platform Lewisburg PCH?

[Sandy Zhang]

Hi David,

About set permissions for the "BIOS" master via BRWA and BRRA in the FRACC
register, do you mean modify the below location by FITC.exe? if yes, I have
changed the "Host CPU/BIOS Write Access" & "Host CPU/BIOS Read Access"'s value
to 0xFFFF to enable all the sixty region's access, but the result has not
any change.



[image: 内嵌图片 2]

2017-08-14 14:23 GMT+08:00 David Hendricks <david.hendricks at gmail.com>:

> On Sun, Aug 13, 2017 at 6:26 PM, Sandy Zhang <sanzhang at celestica.com>
> wrote:
>
>> Hi David,
>>
>> I'm inline.
>>
>
> I don't see your responses. Did you intend to reply to my comments?
>
>
>>
>> 2017-08-14 9:17 GMT+08:00 David Hendricks <david.hendricks at gmail.com>:
>>
>>> Hi Sandy,
>>>
>>> Responses in-line.
>>>
>>> On Fri, Aug 11, 2017 at 1:38 AM, Sandy Zhang <sanzhang at celestica.com>
>>> wrote:
>>>
>>>> Hi David,
>>>>
>>>>      Sorry, I have a doubt about the range outside, from the binary
>>>> map, we can find the Spare 3 Region size is 0x00FFFFFF - 0xFF0000 + 1 =
>>>> 0x10000, and the binary size map to this range is also 0x10000, they are
>>>> equal, why outside was happened? and can you tell me how to update the
>>>> binary region's range defined in the flash description?
>>>>
>>>> Start (hex)    End (hex)    Length (hex)    Area Name
>>>> -----------    ---------    ------------    ---------
>>>> ...
>>>> ...
>>>> ....
>>>> 00FF0000       00FFFFFF     00010000        Spare 3 Region
>>>> 01000000       01FFFFFF     01000000        BIOS Region
>>>>
>>>
>>> The Flash Region registers (BIOS_FREGn) define the boundaries of each
>>> region. I don't see where 0xa36000-0xffffff is covered:
>>> 0x54: 0x00000000 FREG0: Flash Descriptor region (0x00000000-0x00000fff)
>>> is read-write.
>>> 0x58: 0x1fff1000 FREG1: BIOS region (0x01000000-0x01ffffff) is
>>> read-write.
>>> 0x5C: 0x0a250003 FREG2: Management Engine region (0x00003000-0x00a25fff)
>>> is read-write.
>>> 0x60: 0x00020001 FREG3: Gigabit Ethernet region (0x00001000-0x00002fff)
>>> is read-write.
>>> 0x64: 0x00007fff FREG4: Platform Data region is unused.
>>> 0x68: 0x0a350a26 FREG5: unknown region (0x00a26000-0x00a35fff) is
>>> read-write.
>>> 0x6C: 0x00007fff FREG6: unknown region is unused.
>>> 0x70: 0x00007fff FREG7: unknown region is unused.
>>> 0x74: 0x00007fff FREG8: unknown region is unused.
>>> 0x78: 0x00007fff FREG9: unknown region is unused.
>>>
>>> You might also need to set permissions for the "BIOS" master (i.e.
>>> flashrom running on the CPU) via BRWA and BRRA in the FRACC register.
>>>
>>>  In addition, from flash log file(please see attachment
>>>> "Lewisburg_W25Q256.log"), it shows:
>>>> Found Programmer flash chip "Opaque flash chip" (32768 kB,
>>>> Programmer-specific) mapped at physical address 0x0000000000000000.
>>>>  but, my flash chip is "Winbond flash chip", what do you think about
>>>> this?
>>>>
>>>
>>> This is OK. Intel hardware sequencing is an "opaque" programmer
>>> interface since flashrom does not directly send NOR flash commands via a
>>> raw SPI interface. For hardware sequencing we use the FCYCLE field as our
>>> command interface to the SPI flash.
>>>
>>>
>>
>>
>> --
>>
>> *Best Regard!*
>>
>> *Sandy Zhang (* 张立康*)*
>> *BIOS Engineer*
>> *Global Design Service*
>> *Celestica(Shanghai) R&D Center, China*
>> *Mail: sanzhang at celestica.com <viterzho at celestica.com>*
>> *Mobile: (+86)15965353952 <+86%20159%206535%203952>*
>> *Phone: (+86)021-61006028-7623*
>>
>
>


-- 

*Best Regard!*

*Sandy Zhang (* 张立康*)*
*BIOS Engineer*
*Global Design Service*
*Celestica(Shanghai) R&D Center, China*
*Mail: sanzhang at celestica.com <viterzho at celestica.com>*
*Mobile: (+86)15965353952*
*Phone: (+86)021-61006028-7623*
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