[flashrom] Re: Updating the e-flash on an ITE SuperIO chip
On Wed, 13 Feb 2019 at 14:24, Mike Banon wrote: > It would be really nice if you could share a datasheet for IT8623E I don't have that, sorry. I have no idea why ITE is so secret about this stuff. I'm waiting back from some kind of a statement from them. Richard ___ flashrom mailing list -- flashrom@flashrom.org To unsubscribe send an email to flashrom-le...@flashrom.org
[flashrom] Re: Updating the e-flash on an ITE SuperIO chip
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 wrote: > > Hello, > > On Mon, Feb 11, 2019, 18:26 Richard Hughes > >> On Mon, 11 Feb 2019 at 17:00, Angel Pons 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 >> 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 -- flashrom@flashrom.org > To unsubscribe send an email to flashrom-le...@flashrom.org ___ flashrom mailing list -- flashrom@flashrom.org To unsubscribe send an email to flashrom-le...@flashrom.org
[flashrom] Re: Updating the e-flash on an ITE SuperIO chip
Hello, On Mon, Feb 11, 2019, 18:26 Richard Hughes On Mon, 11 Feb 2019 at 17:00, Angel Pons 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 > 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 -- flashrom@flashrom.org To unsubscribe send an email to flashrom-le...@flashrom.org
[flashrom] Re: Updating the e-flash on an ITE SuperIO chip
On Mon, 11 Feb 2019 at 17:00, Angel Pons 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. > 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. On Mon, 11 Feb 2019 at 17:11, Carl-Daniel Hailfinger 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. Richard. ___ flashrom mailing list -- flashrom@flashrom.org To unsubscribe send an email to flashrom-le...@flashrom.org
[flashrom] Re: Updating the e-flash on an ITE SuperIO chip
On 11.02.2019 18:00, Angel Pons wrote: > On Mon, Feb 11, 2019, 16:33 Richard Hughes > I've been looking at updating the EC for the IT8587 and IT8987 SuperIO >> controllers from userspace. > Hmm, I have the ITE IT8585 and IT8987 chips here. > >> I see that there are it87spi and ite85spi >> modules in flashrom, but as I understand it they are using the ITE >> chip to write the system firmware over SPI (e.g. the 4MiB BIOS) rather >> than the 128KiB internal e-flash. > 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. Ah, these were the days... IIRC IT87* were SuperI/O chips, whereas IT85* were Embedded Controllers mostly for laptops. 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. IT85 handling was way more complicated because it depended on multiple factors: The firmware running on the IT85 EC, the way the EC was wired in the laptop, and the exact model of the IT85 family. Probing for this was not completely reliable, so it was disabled by default, but IIRC it worked on a few models. >> Whilst I now have a datasheet, I > For those chips? I'm interested in them: How did you obtain them? > >> don't want to implement code that someone else has already done. If >> anyone knows any pointers to any code or documentation I'd be very >> grateful. Thanks. > 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. The ITE IT89* family is something I never worked with, so I would have to read up on that first. Regards, Carl-Daniel ___ flashrom mailing list -- flashrom@flashrom.org To unsubscribe send an email to flashrom-le...@flashrom.org
[flashrom] Re: Updating the e-flash on an ITE SuperIO chip
Hello Richard, On Mon, Feb 11, 2019, 16:33 Richard Hughes > I've been looking at updating the EC for the IT8587 and IT8987 SuperIO > controllers from userspace. Hmm, I have the ITE IT8585 and IT8987 chips here. > I see that there are it87spi and ite85spi > modules in flashrom, but as I understand it they are using the ITE > chip to write the system firmware over SPI (e.g. the 4MiB BIOS) rather > than the 128KiB internal e-flash. 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. > Whilst I now have a datasheet, I For those chips? I'm interested in them: How did you obtain them? > don't want to implement code that someone else has already done. If > anyone knows any pointers to any code or documentation I'd be very > grateful. Thanks. 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. > Richard Best regards, Angel Pons ___ flashrom mailing list -- flashrom@flashrom.org To unsubscribe send an email to flashrom-le...@flashrom.org
