It would be really nice if you could share a datasheet for IT8623E (found at Asus AM1I-A amd early-16h motherboard (no PSP)) or at least tell if it contains the internal memory like KB9012 or not - is there something we will need to flash in case of IT8623E chip replacement
On Mon, Feb 11, 2019 at 8:56 PM Angel Pons <[email protected]> wrote: > > Hello, > > On Mon, Feb 11, 2019, 18:26 Richard Hughes <[email protected] wrote: >> >> On Mon, 11 Feb 2019 at 17:00, Angel Pons <[email protected]> wrote: >> > The it85spi driver is commented out in code, apparently because it >> > relies on firmware-specific functions. AFAIK, there isn't much to read >> > the internal flash on ECs, other than the ENE KB9012's via EDI. >> >> Okay, that was a very useful read, thanks. Different, but related of course. >> >> > > Whilst I now have a datasheet, I >> > For those chips? I'm interested in them: How did you obtain them? >> >> I've been working with an ODM for an un-named OEM, who supplied me the >> datasheet for the IT89 without signing an NDA. I don't think I can >> redistribute it without issues. > > > Oh, bummer. > >> > I don't think much has been done for the internal flash on these ICs on >> > flashrom. For instance, I didn't know the IT8987 had an internal flash. >> >> As I understand it, at least for the the hardware I have here, the >> IT89 has both. The SPI "external" flash is only used to populate the >> "internal" e-flash at manufacturing time and then after than it's >> unused. I imagine you could reprogram the 128k external SPI chip using >> the indirect mapping thing although at least for me it's a nice "get >> out of jail" feature as the current firmware seems to look for the >> A5A5A5A5 16 byte header on the e-flash to check if it's valid. Of >> course, I could have misunderstood this all wildly. > > > I now recall reading something like that. I'm not sure about the header bit, > though. > >> On Mon, 11 Feb 2019 at 17:11, Carl-Daniel Hailfinger >> <[email protected]> wrote: >> > IT87 handling was easy and straightforward because all they did >> > (regarding flash) was translating LPC flash accesses to SPI flash >> > accesses in passthrough mode and offering a separate SPI-centric >> > programming interface for full access. >> >> I think IT89 is much like a IT87 -- some of the LDNs seem a bit >> different (and there are more!) but it looks basically the same kind >> of beast. > > > Well, the IT87 and IT86 series are usually Super IO chips, whereas the IT85 > and IT89 chips are ECs, which seem to have a SuperIO-like part, with LDNs and > such. > >> Richard. > > > Best regards, > > Angel Pons > > _______________________________________________ > flashrom mailing list -- [email protected] > To unsubscribe send an email to [email protected] _______________________________________________ flashrom mailing list -- [email protected] To unsubscribe send an email to [email protected]
