[coreboot] Flashrom won't work with DediProg SF100 fw 6.5.03

David Hendricks dhendrix at google.com
Tue Jun 2 21:51:02 CEST 2015


On Tue, Jun 2, 2015 at 12:26 PM, Steve Goodrich <steve.goodrich at se-eng.com>
wrote:

> I'll give that a shot (thank you).
>
> I notice that the VERIFY is requesting 256 bytes at a time for all 8 MB...
> wouldn't it be better to use a page size from the flash chip (like 4 KB)?
>

Yes. There is actually a patch to read the whole flash which speeds things
up a lot on Dediprog:  https://chromium-review.googlesource.com/#/c/240543/

Since that patch touches common code, though, the ME gremlin rears its ugly
head and we need to be careful not to read into a read-protected region. So
there's still a bit of work to be done (I started on that here:
https://chromium-review.googlesource.com/#/c/257191/).

If either/both of those patches help, feel free to hijack them and so we
can make progress on this.


> Thanks!
>
>      -- Steve G.
>
> On Tue, Jun 2, 2015 at 1:14 PM, Duncan Laurie <dlaurie at chromium.org>
> wrote:
>
>> It looks like the code tries 12MHz by default but can be set to 24MHz
>> which is worth a try.
>>
>> I think the syntax would just be "-p dediprog:speed=24"
>>
>> -duncan
>>
>>
>> On Tue, Jun 2, 2015 at 11:38 AM, Steve Goodrich <
>> steve.goodrich at se-eng.com> wrote:
>>
>>> I got the Chromium version of flashrom to work, but it takes 20 minutes
>>> to flash/verify the 8 MB device.  So, while "working" is far better than
>>> "not working", it is a bit sluggish.  :-)
>>>
>>> Any thoughts on speeding it up?
>>>
>>>      -- Steve G.
>>>
>>> On Tue, Jun 2, 2015 at 8:57 AM, Steve Goodrich <
>>> steve.goodrich at se-eng.com> wrote:
>>>
>>>> Thanks, Duncan!  I'll have a look.
>>>>
>>>>      -- Steve G.
>>>>
>>>> On Tue, Jun 2, 2015 at 8:48 AM, Duncan Laurie <dlaurie at chromium.org>
>>>> wrote:
>>>>
>>>>> On Tue, Jun 2, 2015 at 7:39 AM, Steve Goodrich <
>>>>> steve.goodrich at se-eng.com> wrote:
>>>>>
>>>>>> I have a DediProg SF100 programmer that I want to use with flashrom
>>>>>> under Linux.  Unfortunately, the SF100 has firmware version 6.5.03 and I
>>>>>> can't use flashrom with it.
>>>>>>
>>>>>> I'm looking for a solution.  Does anyone have (or know where/how I
>>>>>> can get):
>>>>>> 1) A version of SF100 firmware that will work with flashrom?
>>>>>> 2) A version of flashrom that will work with SF100 6.5.3?
>>>>>> 3) A Linux tool -- other than flashrom -- that will work with the
>>>>>> SF100 with its current firmware?
>>>>>>
>>>>>> Thanks for any help you can provide!
>>>>>>      -- Steve G.
>>>>>>
>>>>>>
>>>>> Hi Steve,
>>>>>
>>>>> There is a patch in the chromium flashrom tree that add support for
>>>>> firmware 6.0+ (which may or may not include 6.5.3) that does not seem to be
>>>>> in the upstream flashrom:
>>>>>
>>>>> https://chromium.googlesource.com/chromiumos/third_party/flashrom/+/543101a06832b4e3a0d89ec9bf81ec398ff5808e
>>>>>
>>>>> I suspect the chromium flashrom tree has diverged enough from upstream
>>>>> that it will not apply cleanly there but it is only a 130 line patch so it
>>>>> shouldn't be too bad to integrate if needed.
>>>>>
>>>>> -duncan
>>>>>
>>>>>
>>>>
>>>
>>
>
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>



-- 
David Hendricks (dhendrix)
Systems Software Engineer, Google Inc.
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