On Tue, Dec 21, 2010 at 9:31 AM, Richard A. Smith <[email protected]>wrote:
> On 12/14/2010 07:48 AM, Carl-Daniel Hailfinger wrote: > > Steven, you are right about having to read all the datasheets. If you do >> that, can you please extract a list of allowed instructions from all >> datasheets (and if some bits are X/dontcare please write that down as >> well). Such a list will help us a lot if we extend flashrom for more >> programmer types and for dual/quad read/write interfaces. If you can >> check the timing (how many bytes for address/delay/data) sequences for >> the read/write/ID instructions as well, even better! >> > > Seems like multiple categories of READ are going to be a necessity for > flashrom to support chips that have a different read format. > > > Richard, Steven demonstrated that a simple check of the Dediprog device >> list against the flashrom device list isn't going to help. Sorry. We >> could ask the Dediprog developers about how they handle chips with odd >> read instructions, but I suspect that it will essentially boil down to >> using the generic command interface instead of the fast bulk interfaces. >> > > Indeed, that complicates things. *Sigh* :( I suppose a chip audit will be > the only way to sort all this out. > > Is that something that can start happening soon? I'm currently on xmas > vacation and have some idle time. If we have some sort of plan for dividing > up the datasheets among people then I can start going through some. > > Perhaps some sort of wiki table on flashrom.org to keep track? > > I don't have a board that I can load an AT25512 onto and hook my dediprog > up to it to see what it does with devices that have different read > structures. > > -- > Richard A. Smith <[email protected]> > One Laptop per Child > I don't have a wiki account, but I'm fine with however you want to break them up- I should also have some time over the holidays here to look at some sheets. If you'd like to see my previous sheet, it's here: http://www.flashrom.org/pipermail/flashrom/2010-October/005118.html If you have any questions, feel free to ask.
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