[U-Boot] [PATCH PATCH v4 13/15] drivers: board: Add get_fit_loadable()

[Jean-Jacques Hiblot]

This function will be used by the SPL to get the names of images to load
from the FIT. This allows to load different images based on runtime HW
detection.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot at ti.com>
---

Changes in v4: New

 drivers/board/board-uclass.c | 11 +++++++++++
 include/board.h              | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/drivers/board/board-uclass.c b/drivers/board/board-uclass.c
index a516ba4962..4af991e176 100644
--- a/drivers/board/board-uclass.c
+++ b/drivers/board/board-uclass.c
@@ -23,6 +23,17 @@ int board_detect(struct udevice *dev)
 	return ops->detect(dev);
 }
 
+const char *board_get_fit_loadable(struct udevice *dev, int index,
+				   const char *type)
+{
+	struct board_ops *ops = board_get_ops(dev);
+
+	if (!ops->get_fit_loadable)
+		return NULL;
+
+	return ops->get_fit_loadable(dev, index, type);
+}
+
 int board_get_bool(struct udevice *dev, int id, bool *val)
 {
 	struct board_ops *ops = board_get_ops(dev);
diff --git a/include/board.h b/include/board.h
index 9dc78684f8..0f4f1aadeb 100644
--- a/include/board.h
+++ b/include/board.h
@@ -79,6 +79,24 @@ struct board_ops {
 	 * Return: 0 if OK, -ve on error.
 	 */
 	int (*get_str)(struct udevice *dev, int id, size_t size, char *val);
+
+	/**
+	 * get_fit_loadable - Get the name of an image to load from FIT
+	 * This function can be used to provide the image names based on runtime
+	 * detection. A classic use-case would when DTBOs are used to describe
+	 * additionnal daughter cards.
+	 *
+	 * @dev:	The board instance to gather the data.
+	 * @index:	Index of the image. Starts at 0 and gets incremented
+	 *		after each call to this function.
+	 * @type:	The type of image. For example, "fdt" for DTBs
+	 *
+	 * return:	The name of the node describing the image. NULL
+	 *		indicates that there no more image to get from this
+	 *		function.
+	 */
+	const char *(*get_fit_loadable)(struct udevice *dev, int index,
+					const char *type);
 };
 
 #define board_get_ops(dev)	((struct board_ops *)(dev)->driver->ops)
@@ -137,3 +155,20 @@ int board_get_str(struct udevice *dev, int id, size_t size, char *val);
  * Return: 0 if OK, -ve on error.
  */
 int board_get(struct udevice **devp);
+
+/**
+ * board_get_fit_loadable - Get the name of an image to load from FIT
+ * This function can be used to provide the image names based on runtime
+ * detection. A classic use-case would when DTBOs are used to describe
+ * additionnal daughter cards.
+ *
+ * @dev:	The board instance to gather the data.
+ * @index:	Index of the image. Starts at 0 and gets incremented
+ *		after each call to this function.
+ * @type:	The type of image. For example, "fdt" for DTBs
+ *
+ * return:	The name of the node describing the image. NULL indicates
+ *		that there no more images to get from this function.
+ */
+const char *board_get_fit_loadable(struct udevice *dev, int index,
+				   const char *type);
-- 
2.17.1