spl: change return values of spl_*_load_image()

Make spl_*_load_image() functions return a value instead of
hanging if a problem is encountered. This enables main spl code
to make the decision whether to hang or not, thus preparing
it to support alternative boot devices.

Some boot devices (namely nand and spi) do not hang on error.
Instead, they return normally and SPL proceeds to boot the
contents of the load address. This is considered a bug and
is rectified by hanging on error for these devices as well.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Ian Campbell <ijc@hellion.org.uk>
Cc: Hans De Goede <hdegoede@redhat.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Jagan Teki <jteki@openedev.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/common/spl/spl_nor.c b/common/spl/spl_nor.c
index c2fee01ac1c..e08afe200be 100644
--- a/common/spl/spl_nor.c
+++ b/common/spl/spl_nor.c
@@ -7,7 +7,7 @@
 #include <common.h>
 #include <spl.h>
 
-void spl_nor_load_image(void)
+int spl_nor_load_image(void)
 {
 	/*
 	 * Loading of the payload to SDRAM is done with skipping of
@@ -43,7 +43,7 @@ void spl_nor_load_image(void)
 			       (void *)(CONFIG_SYS_FDT_BASE),
 			       (16 << 10));
 
-			return;
+			return 0;
 		} else {
 			puts("The Expected Linux image was not found.\n"
 			     "Please check your NOR configuration.\n"
@@ -62,4 +62,6 @@ void spl_nor_load_image(void)
 	memcpy((void *)spl_image.load_addr,
 	       (void *)(CONFIG_SYS_UBOOT_BASE + sizeof(struct image_header)),
 	       spl_image.size);
+
+	return 0;
 }