1 files changed, 66 insertions, 0 deletions
diff --git a/baseboard/brya/cbi_ec_fw_config.h b/baseboard/brya/cbi_ec_fw_config.h
new file mode 100644
index 0000000000..fd56ced869
--- /dev/null
+++ b/baseboard/brya/cbi_ec_fw_config.h
@@ -0,0 +1,66 @@
+/* Copyright 2021 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef __BRYA_CBI_EC_FW_CONFIG_H_
+#define __BRYA_CBI_EC_FW_CONFIG_H_
+
+#include "stdint.h"
+
+/****************************************************************************
+ * CBI FW_CONFIG layout shared by all Brya boards
+ *
+ * Source of truth is the program/brya/program.star configuration file.
+ */
+
+/*
+ * TODO(b/180434685): are these right?
+ *	also, remove DB_USB_ABSENT2 after all existing boards have been
+ *	set up correctly.
+ */
+
+enum ec_cfg_usb_db_type {
+	DB_USB_ABSENT = 0,
+	DB_USB3_PS8815 = 1,
+	DB_USB_ABSENT2 = 15
+};
+
+union brya_cbi_fw_config {
+	struct {
+		/*
+		 * TODO(b/180434685): 4 bits?
+		 */
+		enum ec_cfg_usb_db_type	usb_db : 4;
+		uint32_t		reserved_1 : 28;
+	};
+	uint32_t raw_value;
+};
+
+/*
+ * Each Brya board must define the default FW_CONFIG options to use
+ * if the CBI data has not been initialized.
+ */
+extern const union brya_cbi_fw_config fw_config_defaults;
+
+/**
+ * Initialize the FW_CONFIG from CBI data. If the CBI data is not valid, set the
+ * FW_CONFIG to the board specific defaults.
+ */
+void init_fw_config(void);
+
+/**
+ * Read the cached FW_CONFIG.  Guaranteed to have valid values.
+ *
+ * @return the FW_CONFIG for the board.
+ */
+union brya_cbi_fw_config get_fw_config(void);
+
+/**
+ * Get the USB daughter board type from FW_CONFIG.
+ *
+ * @return the USB daughter board type.
+ */
+enum ec_cfg_usb_db_type ec_cfg_usb_db_type(void);
+
+#endif /* __BRYA_CBI_EC_FW_CONFIG_H_ */