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f783aee46f
Add a set of functions to deal with power on/power off, and checking the power button. Then use these functions in a new top-level power control loop. This implements the following features: - Cold reset powers off the AP When powered off: - Press pwron turns on the AP - Hold pwron turns on the AP, and then 16s later turns it off and leaves it off until pwron is released and pressed again When powered on: - The PMIC PWRON signal is released one second after the power button is released (we expect that U-Boot as asserted XPSHOLD by then) - Holding pwron for 8s powers off the AP - Pressing and releasing pwron within that 8s is ignored - If XPSHOLD is dropped by the AP, then we power the AP off BUG=chrome-os-partner:9424 TEST=very ad-hoc: 1. build and boot on daisy, flash U-Boot with USB using 'cros_bundle_firmware -w usb', inserting daisy USB cable when it says 'Reseting board via servo...' 2. Press cold reset, then power on, see that it powers on 3. Then hold power-on for 8 seconds and see that it power off 4. XPSHOLD function not tested yet (this should work in Daisy 2) Change-Id: Ie471af0b4e690de7d6340e47e148c8ce3cda94f3 Signed-off-by: Simon Glass <sjg@chromium.org>
- EC Lib
This wraps Blizzard driverlib and implements the EC chip interface defined
by Google. See below diagram for architecture.
+--------------------+
| Host BIOS/OS |
+--------------------+
---- host interface ----
+--------------------+
| Google EC features |
+--------------------+
---- chip interface ---- The interface is defined in
src/platform/ec/chip_interface/*.
+--------------------+ But the real implementation is in EC Lib.
| EC Lib |
+--------------------+
| Blizzard low level |
| driver, the |
| driverlib. |
+--------------------+