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@ -41,6 +41,39 @@ for using a Rapberry Pi, for example. |
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* Make sure you have RAM that uses 1,5V, not 1,35V. Check the specification of |
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your RAM module(s). |
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### original update / EC firmware (optional) |
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Before flashing coreboot, consider doing one original Lenovo upgrade process |
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in case you're not running the latest version. This is not supported anymore, |
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once you're running coreboot (You'd have to manually flash back your backup |
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images first, see later chapters). |
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Also, this updates the BIOS _and_ Embedded Controller (EC) firmware. The EC |
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is not updated anymore, when running coreboot. The latest EC version is 1.14 |
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and that's unlikely to change. |
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In case you're not running the latest BIOS version, either |
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* use [the latest original CD](https://support.lenovo.com/at/en/downloads/ds029188) and burn it, or |
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* use the same, only with a patched EC firmware that allows using any battery: |
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#### Disable the battery validation check |
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By default, only original Lenovo batteries are allowed. |
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Thanks to [this](http://zmatt.net/unlocking-my-lenovo-laptop-part-3/) |
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[project](https://github.com/eigenmatt/mec-tools) we can use Lenovo's bootable |
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upgrade image, change it and create a bootable _USB_ image, with an EC update |
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that allows us to use any 3rd party aftermarket battery: |
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sudo apt-get install build-essential git mtools libssl-dev |
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git clone https://github.com/hamishcoleman/thinkpad-ec && cd thinkpad-ec |
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make patch_disable_keyboard clean |
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make patch_enable_battery clean |
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make patched.x230.img |
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That's it. You can create a bootable USB stick: `sudo dd if=patched.x230.img of=/dev/sdx` |
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and boot from it. Alternatively, burn `patched.x230.iso` to a CD. |
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### flashrom chip config |
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We (or our scripts) use [flashrom](https://flashrom.org/) for flashing. Run |
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`flashrom -p <your_hardware>` (for [example](#how-to-flash) |
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@ -59,23 +92,6 @@ In case you are unsure what to specify, here's some examples we find out there: |
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* `EN25QH64` is used sometimes |
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### EC firmware (optional) |
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Enter Lenovo's BIOS with __F1__ and check the embedded controller (EC) version to be |
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__1.14__ and upgrade using |
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[the latest bootable CD](https://support.lenovo.com/at/en/downloads/ds029188) |
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if it isn't. This updates BIOS and EC. The EC cannot be upgraded when coreboot |
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is installed. (In case a newer version should ever be available (I doubt it), |
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you could temporarily flash back the original Lenovo BIOS image from your |
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backup) |
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#### Disable the battery validation check |
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While still having a Lenovo BIOS running, you could use https://github.com/eigenmatt/mec-tools |
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to extract and decrypt the EC firmware and apply |
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[this patch](https://github.com/hamishcoleman/thinkpad-ec/blob/master/x230.G2HT35WW.img.d/006_battery_validate.patch.OFF) |
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and put it all together. This should disable the validity check for the battery |
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and allow to run any 3rd party aftermarket battery. This project puts these |
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steps together and generates an ISO image with this patch: https://github.com/hamishcoleman/thinkpad-ec |
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### ifd unlock and me_cleaner: the 8MB chip |
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The Intel Management Engine resides on the 8MB chip (at the bottom, closer to |
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you). We don't need to touch it |
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Martin Kepplinger
6 years ago