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, 9 insertions, 9 deletions

diff --git a/include/spl.h b/include/spl.h
index 8e53426142..46fc454c22 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -45,31 +45,31 @@ int spl_start_uboot(void);
 void spl_display_print(void);
 
 /* NAND SPL functions */
-void spl_nand_load_image(void);
+int spl_nand_load_image(void);
 
 /* OneNAND SPL functions */
-void spl_onenand_load_image(void);
+int spl_onenand_load_image(void);
 
 /* NOR SPL functions */
-void spl_nor_load_image(void);
+int spl_nor_load_image(void);
 
 /* MMC SPL functions */
-void spl_mmc_load_image(void);
+int spl_mmc_load_image(void);
 
 /* YMODEM SPL functions */
-void spl_ymodem_load_image(void);
+int spl_ymodem_load_image(void);
 
 /* SPI SPL functions */
-void spl_spi_load_image(void);
+int spl_spi_load_image(void);
 
 /* Ethernet SPL functions */
-void spl_net_load_image(const char *device);
+int spl_net_load_image(const char *device);
 
 /* USB SPL functions */
-void spl_usb_load_image(void);
+int spl_usb_load_image(void);
 
 /* SATA SPL functions */
-void spl_sata_load_image(void);
+int spl_sata_load_image(void);
 
 /* SPL FAT image functions */
 int spl_load_image_fat(block_dev_desc_t *block_dev, int partition, const char *filename);