Add support for Google ChromeEC

Google ChromeEC is an EC with completely open source firmware.
See https://gerrit.chromium.org/gerrit/gitweb?p=chromiumos/platform/ec.git;a=summary
for the EC firmware source code (aka more information about the ChromeEC)

This patch adds support for the ChromeEC on coreboot's side.

Great thanks to the ChromeEC team for this amazing work. It's another
important milestone towards a free and open firmware stack on modern
hardware.

Change-Id: Iace78af9d291791d2f5f80ccca1587b418738cec
Signed-off-by: Stefan Reinauer <reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/2481
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h
new file mode 100644
index 0000000000..f056d266e6
--- /dev/null
+++ b/src/ec/google/chromeec/ec.h
@@ -0,0 +1,49 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 The Chromium OS Authors. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Mailbox EC communication interface for Google Chrome Embedded Controller.
+ */
+
+#ifndef _EC_GOOGLE_CHROMEEC_EC_H
+#define _EC_GOOGLE_CHROMEEC_EC_H
+
+#ifndef __PRE_RAM__
+u32 google_chromeec_get_wake_mask(void);
+int google_chromeec_set_sci_mask(u32 mask);
+int google_chromeec_set_smi_mask(u32 mask);
+int google_chromeec_set_wake_mask(u32 mask);
+u8 google_chromeec_get_event(void);
+int google_ec_running_ro(void);
+u16 google_chromeec_get_board_version(void);
+#endif
+
+u32 google_chromeec_get_events_b(void);
+int google_chromeec_kbbacklight(int percent);
+void google_chromeec_post(u8 postcode);
+void google_chromeec_log_events(u32 mask);
+
+enum usb_charge_mode {
+	USB_CHARGE_MODE_DISABLED,
+	USB_CHARGE_MODE_CHARGE_AUTO,
+	USB_CHARGE_MODE_CHARGE_BC12,
+	USB_CHARGE_MODE_DOWNSTREAM_500MA,
+	USB_CHARGE_MODE_DOWNSTREAM_1500MA,
+};
+int google_chromeec_set_usb_charge_mode(u8 port_id, enum usb_charge_mode mode);
+
+#endif /* _EC_GOOGLE_CHROMEEC_EC_H */