2019-10-16 02:42:15 +00:00
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Description of the patch sets
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2017-01-31 05:50:58 +00:00
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This repository has two sets of patches - one set for the keyboard
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changes and one for turning off the battery validation. The battery
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patches are disabled by default, but are easy to enable.
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Any combination of the two sets of patches can be enabled or disabled
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(even including a version with no patches at all - to revert all changes)
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2019-10-16 02:42:15 +00:00
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### KEYBOARD patchset
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Applying this set of patches will adjust your Embedded Controller to support
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the slightly different keymapping used with a xx20 keyboard. If you prefer
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to use the older 7-row keyboard instead of the newer xx30 6-row keyboard, then
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you want this patchset enabled. It is enabled by default.
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### BATTERY patchset
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Applying this set of patches will disable the check that the system makes for
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Lenovo original batteries. If you wish to use aftermarket batteries, then
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you want to enable this patchset. It is disabled by default.
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Note that this authentic battery check was done by Lenovo for a good reason
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as aftermarket battery construction and quality is highly variable. There
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have been a number of people who have discovered that their aftermarket
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battery is not working even after installing this patch and (so far) they
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have all found that the battery itself was broken.
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Configuring which patches are used
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----------------------------------
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2017-01-31 05:50:58 +00:00
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There are several makefile targets that exist to help you configure which
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patches are enabled. Choose one or more of the following commands to
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configure as you want:
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2017-03-16 04:38:24 +00:00
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make patch_enable_battery clean # Uses the battery validate patch
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make patch_disable_battery clean # Turns off the battery validate patch
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make patch_enable_keyboard clean # Uses the keyboard patches
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make patch_disable_keyboard clean # Turns off the keyboard patches
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2017-01-31 05:50:58 +00:00
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Behind the scenes
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-----------------
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Each hardware and EC firmware version combination needs its own set of
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2019-08-06 15:46:31 +00:00
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patches, which are stored in directories called "*.img.d". The Makefile
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defines these patches into named groups ("KEYBOARD" and "BATTERY") which
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can be enabled or disabled via a config file.
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2017-01-31 05:50:58 +00:00
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2019-08-06 15:46:31 +00:00
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The enable and disable commands are simply updating the config file with
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the appropriate settings.
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