Hi, Le vendredi 09 février 2018 à 14:33 -0500, Youness Alaoui a écrit : > On Tue, Feb 6, 2018 at 4:41 AM, Mike Banon <mikeb...@gmail.com> > wrote: > > Thank you very much for telling about EC-1.75 project! > > http://dev.laptop.org/git/users/rsmith/ec-1.75/tree/?h=3930-A1 > > Maybe some of its' elements could be borrowed for Origami > > if the hardware is similar? (haven't compared the datasheets) > > There will probably be some things in common. I don't know how much > of > ec-1.75 is good enough to be reused though, or if it's maintainable, > etc.. but yes, it could be a good starting point.
There is indeed a lot in common with that code, but the code itself is not structured and organized at all so reusing the codebase makes very little sense. I mostly use this code for reference and it has already proven useful (e.g. for special trickery that has to be implemented when going to low power mode). > > @ Youness and Marty : > > > > Proprietary firmware of KB9012 explicitly disables EDI - ENE Debug > > Interface > > (the protocol used to access the internal memory of KB9012) unless > > pin > > 42 is grounded > > _before_ powering the KB9012 controller ! Maybe its the same with > > your > > another KB ? > > If you ground that pin (not necessarily 42, your KB's pin number > > could > > be different) > > to put your EC into debug mode, maybe then you could successfully > > read/write it ? > > > > Here is the full description of my successful KB9012 hardware > > flashing setup > > through the keyboard port using a flex cable with soldered wires: > > 0.5mm pitch > > makes it hard to solder directly to keyboard port, and also I like > > flex cable solution > > because its much faster to remove/insert a cable than to > > solder/desolder the wires > > > > http://dangerousprototypes.com/docs/Flashing_KB9012_with_Bus_Pirate > > > > ^^^ Had to unite three grounds ( programmer's, mainboard's and > > KB9012's 42 pin ) > > to make it work > > > > Currently we are actively working on the inclusion of KB9012 > > flashing support > > to the official flashrom - but its already possible via the > > unofficial patches. > > Changes 23258 - 23263 at the https://review.coreboot.org/#/q/projec > > t:flashrom Note that the patches have been merged at this point, so ENE EDI support in flashrom is now ready. I am also wondering about using libflashrom to write an EDI debugger (since, after all, EDI has access to the whole external memory). > > I haven't compared the datasheets of KB9012 and your KB, so I don't > > know > > if they are using exactly the same debug interface or it is > > slightly different > > (please check if there are differences, maybe you'll have to write > > some code) > > > > I trust hardware flashing more than the software, especially your > > current AMI BIOS setup > > which isn't free software. Maybe the direct hardware flashing is > > also > > possible for you > > Sure, you can trust hardware flashing more than software flashing, > but > I really need software flashing. If it was just for me, yeah, I could > fiddle with it to flash it by hardware for my personal needs, but > when > it's about deploying it to all our customer base, that's another > story, the only solution is software flashing. Obviously, it would > have to work in coreboot, so whatever coreboot is doing wrong (or AMI > is doing right.. my guess is that it's probably something with the EC > ACPI code), we'd have to figure that out first in order to get the > read/write support. Either way, since the EC firmware resides in the SPI flash, it'll be no issue to reflash it both by software and hardware. > > Latest status update for Origami-EC firmware: > > https://firstname.lastname@example.org/msg50646.html > > Thanks! Good to see the status update on that. In order to kickstart the development of the Origami-EC firmware, I am designing evaluation boards for both the KB9012 and the KB3930 that will expose most of the I/O ports with headers, LEDs, buttons, connectors, etc. The design is done with KiCAD and will be released under the GPLv3+ as part of the Origami-EC project. I am also preparing a debug board to reflash the EC on the G505s from the keyboard connector. There is also ongoing work on the emulator and the SerialICE-like library for relatying and tracing I/O on the device via UART. Also, note that the emulator can now emulate a virtual console so it's already possible to build and interract with the firmware! Cheers, Paul > > On Mon, Feb 5, 2018 at 9:47 PM, Youness Alaoui > > <kakar...@kakaroto.homelinux.net> wrote: > > > Hi Marty, > > > > > > Unfortunately, the EC firmware on the Librems is not open and we > > > have > > > someone working on that aspect, but with everything we have to > > > handle, > > > I think it's only being done part time. > > > We found something similar to you with the private submodule for > > > the > > > PS/2 module on the OLPC code. > > > More specifically : > > > http://lists.laptop.org/pipermail/openec/2011-January/000158.html > > > And http://dev.laptop.org/git/users/rsmith/ec-1.75/tree/?h=3930-A > > > 1 > > > > > > I had opened a ticket a while ago here : > > > https://tracker.pureos.net/T178 which mentions Origami-EC. I > > > don't > > > know the status of that project, maybe you can contact the > > > developer > > > (Paul Kocialkowski) and see where he's at with his development of > > > that > > > project (which, I need to mention, hasn't been publicly launched > > > yet, > > > as far as I know) and he might benefit from your help if you are > > > interested in doing that. > > > The last time we spoke he said : > > > "The OLPC code is nowhere close to usable on any other platform. > > > Additionally, it is so poorly written that I don't think it is a > > > suitable codebase for any future development. On the other hand, > > > my > > > Origami-EC project (that I will publicly launch soon) should > > > provide a > > > flexible codebase to add support for new devices." > > > > > > Note that the tracker ticket above is quite outdated, we know how > > > to > > > dump the EC (the problem was that it can't be done via hardware > > > because the EC is on the same power rail as the 64KB flash chip, > > > so > > > when we power the flash via hardware, the EC boots and takes > > > control > > > of the SPI lines) but for some reason, we could only dump it via > > > software (using ectool) through the AMI BIOS firmware, with > > > coreboot, > > > we only get 0xFF returned, I don't believe we had time to > > > investigate > > > the cause for that. > > > > > > Sorry for not having any better news for you, but I hope this > > > helps a > > > little you at least. > > > > > > Good luck, > > > Youness. > > > > > > > > > On Fri, Feb 2, 2018 at 10:17 AM, Marty E. Plummer > > > <hanet...@startmail.com> wrote: > > > > Greetings, > > > > > > > > Currently working on a port for the hp g7-2247us laptop, which > > > > features > > > > an ene kb3940q ec, which hopefully should be very similar to > > > > the kb3930 > > > > ec, which has a datasheet available to the public in a few > > > > places. > > > > > > > > Said similar ec is used in some OLPC devices, as well as some > > > > purism > > > > devices, and I was hoping someone in the list would have some > > > > contacts > > > > with those guys so as to be able to use their ec firmware as a > > > > bit of a > > > > reference design, but the OLPC ec firmware repo has a 'private' > > > > submodule which I cannot access and I simply cannot find a repo > > > > for the > > > > purism ec firmware to reference. > > > > > > > > Any assistance you could provide on this matter would be > > > > greatly > > > > appreciated. > > > > > > > > Marty E. Plummer > > > > > > > > -- > > > > coreboot mailing list: email@example.com > > > > https://mail.coreboot.org/mailman/listinfo/coreboot > > > > > > -- > > > coreboot mailing list: firstname.lastname@example.org > > > https://mail.coreboot.org/mailman/listinfo/coreboot > > > > -- > > coreboot mailing list: email@example.com > > https://mail.coreboot.org/mailman/listinfo/coreboot -- Paul Kocialkowski, developer of free digital technology and hardware support Website: https://www.paulk.fr/ Coding blog: https://code.paulk.fr/ Git repositories: https://git.paulk.fr/ https://git.code.paulk.fr/
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