compulab: splash: support multiple splash sources

Define a generic way for boards to define splash image locations:
- introduce struct splash_location
- introduce enum splash_storage
- update cl_splash_screen_prepare() to take an array of above struct
  and select the appropriate one based on the splashsource environment
  variable (if it is not defined- use the first splash location as default).

cm-t35 is updated to work with the new interface.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>

1 files changed, 13 insertions, 2 deletions

diff --git a/board/compulab/common/common.h b/board/compulab/common/common.h
index 80753b4..09b4de6 100644
--- a/board/compulab/common/common.h
+++ b/board/compulab/common/common.h
@@ -24,10 +24,21 @@ static inline int cl_usb_hub_init(int gpio, const char *label)
 static inline void cl_usb_hub_deinit(int gpio) {}
 #endif /* CONFIG_CMD_USB */
 
+enum splash_storage {
+	SPLASH_STORAGE_NAND,
+};
+
+struct splash_location {
+	char *name;
+	enum splash_storage storage;
+	u32 offset;	/* offset from start of storage */
+};
+
 #ifdef CONFIG_SPLASH_SCREEN
-int cl_splash_screen_prepare(int offset);
+int cl_splash_screen_prepare(struct splash_location *locations, uint size);
 #else /* !CONFIG_SPLASH_SCREEN */
-static inline int cl_splash_screen_prepare(int offset)
+static inline int cl_splash_screen_prepare(struct splash_location *locations,
+					   uint size)
 {
 	return -ENOSYS;
 }