3 ms·

Chromebooks/Chromeboxes use a forked Coreboot: https://chromium.googlesource.com/chromiumos/third_party/coreboot/ https://chromium.googlesource.com/chromiumos/

by spilk 12y ago

Chromebooks/Chromeboxes use a forked Coreboot: https://chromium.googlesource.com/chromiumos/third_party/coreboot/ https://chromium.googlesource.com/chromiumos/third_party/cor... Most of the Chromebook/box devices have a physical write-protect that can be removed allowing re-flashing with modified firmware.

listic 12y ago
ok, so it means that even for a Chromebook, Coreboot support is not a given.
- pgeorgi 12y ago
  All x86 Chromebooks (except for the CR48 prototype) use coreboot. For ARM Chromebooks the situation is more complicated - coreboot's ARM support was developed by the Chromebook firmware developers but it seems they missed a deadline or two (no surprise with an architecture bringup), so some of those devices ship with u-boot while coreboot does have support for them.
  - listic 12y ago
    In "Latest known good" column in "Supported Motherboards/Laptops" it says "Unknown" for 5 Intel x86 Chromebooks. http://www.coreboot.org/Supported_Motherboards#Laptops http://www.coreboot.org/Supported_Motherboards#Laptops I understand it means that to the best of Coreboot developers' knowledge (and who knows better than them, right?) noone ever tried to run open-source builds of Coreboot on these models. Consequently, it is overwhelmingly likely that Coreboot (the open-source version that we have access to, not the one in the Googleplex) won't work. Am I mistaken? I considered using C720 Chromebook with open-source Coreboot, but, alas, it says "Unknown" for it, too.
    - pgeorgi 12y ago
      No, it means that noone bothered to send in reports. http://johnlewis.ie/ http://johnlewis.ie/ provides non-Google coreboot images for many Chromebooks. They claim having tested each of their binaries and from looking at the support forums, they have a fair share of users. Also, the "Googleplex version" of coreboot can be found at https://chromium-review.googlesource.com/#/q/project:chromiumos/third_party/coreboot https://chromium-review.googlesource.com/#/q/project:chromiu... (though it can be hard to pinpoint any given released firmware to a concrete commit there - they're working on it)
      - listic 12y ago
        If noone bothered to send in reports, we cannot assume it is really working, can we? After all, without testing, software most certainly doesn't work. Who is this John Lewis guy and why isn't his work the part of the official Coreboot images?
        pgeorgi 12y ago
        There are no official coreboot images. John's images are kind of a coreboot distribution, as is libreboot (http://www.libreboot.org/ http://www.libreboot.org/)

by spilk 12y ago

listic 12y ago

ok, so it means that even for a Chromebook, Coreboot support is not a given.

pgeorgi 12y ago
All x86 Chromebooks (except for the CR48 prototype) use coreboot. For ARM Chromebooks the situation is more complicated - coreboot's ARM support was developed by the Chromebook firmware developers but it seems they missed a deadline or two (no surprise with an architecture bringup), so some of those devices ship with u-boot while coreboot does have support for them.
- listic 12y ago
  In "Latest known good" column in "Supported Motherboards/Laptops" it says "Unknown" for 5 Intel x86 Chromebooks. http://www.coreboot.org/Supported_Motherboards#Laptops http://www.coreboot.org/Supported_Motherboards#Laptops I understand it means that to the best of Coreboot developers' knowledge (and who knows better than them, right?) noone ever tried to run open-source builds of Coreboot on these models. Consequently, it is overwhelmingly likely that Coreboot (the open-source version that we have access to, not the one in the Googleplex) won't work. Am I mistaken? I considered using C720 Chromebook with open-source Coreboot, but, alas, it says "Unknown" for it, too.
  - pgeorgi 12y ago
    No, it means that noone bothered to send in reports. http://johnlewis.ie/ http://johnlewis.ie/ provides non-Google coreboot images for many Chromebooks. They claim having tested each of their binaries and from looking at the support forums, they have a fair share of users. Also, the "Googleplex version" of coreboot can be found at https://chromium-review.googlesource.com/#/q/project:chromiumos/third_party/coreboot https://chromium-review.googlesource.com/#/q/project:chromiu... (though it can be hard to pinpoint any given released firmware to a concrete commit there - they're working on it)
    - listic 12y ago
      If noone bothered to send in reports, we cannot assume it is really working, can we? After all, without testing, software most certainly doesn't work. Who is this John Lewis guy and why isn't his work the part of the official Coreboot images?
      - pgeorgi 12y ago
        There are no official coreboot images. John's images are kind of a coreboot distribution, as is libreboot (http://www.libreboot.org/ http://www.libreboot.org/)