1 files changed, 75 insertions, 0 deletions
diff --git a/lib/vbexport/boot_device.h b/lib/vbexport/boot_device.h
new file mode 100644
index 00000000000..f32fe1a6ec7
--- /dev/null
+++ b/lib/vbexport/boot_device.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2011 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.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ */
+
+/*
+ * This is an interface that we can boot from. It provides a function to start
+ * up the peripheral and also one to scan for available devices attached to
+ * this peripheral.
+ */
+struct boot_interface {
+	const char *name;
+	int type;		/* IF_TYPE... from part.h */
+
+	/**
+	 * Start the peripheral interface, so we are ready to scan for
+	 * devices. This function can return 0 if it knows that there is
+	 * no need to scan. If it returns 1 or more, then a scan will
+	 * started.
+	 *
+	 * @param flags		Flags for this disk: VB_DISK_FLAG_...
+	 * @return 0 if no devices, >=1 if we have devices, -1 on error
+	 */
+	int (*start)(uint32_t flags);
+
+	/**
+	 * Scan this peripheral for available devices
+	 *
+	 * @param desc		Array to put available devices into
+	 * @param max_devs	Maximum number of devices to return
+	 * @param flags		Flags for this disk: VB_DISK_FLAG_...
+	 * @return number of devices found, or -1 on error
+	 */
+	int (*scan)(block_dev_desc_t **desc, int max_devs, uint32_t flags);
+};
+
+/**
+ * Register a new boot interface.
+ *
+ * @param iface		The interface to register
+ * @return 0 if ok, -1 on error
+ */
+int boot_device_register_interface(struct boot_interface *iface);
+
+/**
+ * Checks if a given device matches the provided disk_flags.
+ *
+ * @param dev		Device to check
+ * @param disk_flags	Disk flags which must be present for this device
+ * @param flags		Returns calculated flags for this device
+ * @return 1 if the device matches, 0 if not
+ */
+int boot_device_matches(const block_dev_desc_t *dev, uint32_t disk_flags,
+			uint32_t *flags);
+
+/**
+ * Probe functions for available interfaces
+ *
+ * @return 0 if ok, -1 on error
+ */
+int boot_device_usb_probe(void);
+int boot_device_mmc_probe(void);
+int boot_device_ide_probe(void);
+
+/**
+ * Register all the available boot devices.
+ *
+ * @return 0 if ok, -1 on error
+ */
+int boot_device_init(void);