[coreboot] Yet another idea of an SPI flash chip programmer

[Carl-Daniel Hailfinger]

On 22.12.2008 15:13, Joseph Smith wrote:
>
> On Mon, 22 Dec 2008 19:45:00 +0800, "FENG Yu Ning"
> <fengyuning1984 at gmail.com> wrote:
>   
>> There are lots of flash programmer out there, but none of them (those
>> I know about) fits my requirement well.
>>
>> I would like a programmer to be:
>>
>>  * able to program SPI flash chips,
>>  * not slow (program 512k bytes in 3 mins),
>>  * with a driver whose source code is available (or not difficult to
>>     
> write
>   
>> one),
>>  * simple, and
>>  * cheap.
>>
>> There is one that almost does the job,
>>
>>   http://www.malinov.com/Home/sergeys-projects/spi-flash-programmer
>>
>> but
>> [0] would it be very slow?
>>
>>
>> Recently I find a chip FT2232x
>>
>>   http://www.ftdichip.com/Products/FT2232C.htm
>>
>> It seems that the chip's IO could be configured to work in bit-bang
>> mode and thus able to implement as an SPI I/F.
>>
>>
>> [1] I think it is easy to build a prototype programmer using this chip.
>>     
> Is
>   
>> it?
>> [2] Is the programmer going to meet my requirement?
>>
>>     
> Wow, If that can be used for SPI than the Paraflasher can definitely be
> used for SPI. It would just require software to support it :-)
>   

The FT2232D can speak SPI directly, no need for bitbanging.

Regards,
Carl-Daniel

-- 
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