[U-Boot] [PATCH] spl: Introduce new function spl_board_prepare_for_boot

[Michal Simek]

Call this function before passing control from SPL.
For fpga case it is necessary to enable for example level shifters
when bitstream is programmed.

Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 common/spl/spl.c | 6 ++++++
 include/spl.h    | 1 +
 2 files changed, 7 insertions(+)

diff --git a/common/spl/spl.c b/common/spl/spl.c
index 0a1349f1f253..3faa751e4b43 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -64,6 +64,11 @@ __weak void spl_board_prepare_for_linux(void)
 	/* Nothing to do! */
 }
 
+__weak void spl_board_prepare_for_boot(void)
+{
+	/* Nothing to do! */
+}
+
 void spl_set_header_raw_uboot(void)
 {
 	spl_image.size = CONFIG_SYS_MONITOR_LEN;
@@ -427,6 +432,7 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
 #endif
 
 	debug("loaded - jumping to U-Boot...");
+	spl_board_prepare_for_boot();
 	jump_to_image_no_args(&spl_image);
 }
 
diff --git a/include/spl.h b/include/spl.h
index 358e81b66a96..5f7a8b56c225 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -68,6 +68,7 @@ u32 spl_boot_mode(void);
 void spl_set_header_raw_uboot(void);
 void spl_parse_image_header(const struct image_header *header);
 void spl_board_prepare_for_linux(void);
+void spl_board_prepare_for_boot(void);
 void __noreturn jump_to_image_linux(void *arg);
 int spl_start_uboot(void);
 void spl_display_print(void);
-- 
1.9.1