spl: spi: Add a debug message if loading fails

This currently fails silently. Add a debug message to aid debugging.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/common/spl/spl_spi.c b/common/spl/spl_spi.c
index cd1d6b285ef02a6cac36defcc485c899b5b2db8f..925a1b149157bf337b9983c7aeddb19a5d789ce9 100644 (file)
--- a/common/spl/spl_spi.c
+++ b/common/spl/spl_spi.c
@@ -96,8 +96,11 @@ static int spl_spi_load_image(struct spl_image_info *spl_image,
                /* Load u-boot, mkimage header is 64 bytes. */
                err = spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS, 0x40,
                                     (void *)header);
-               if (err)
+               if (err) {
+                       debug("%s: Failed to read from SPI flash (err=%d)\n",
+                             __func__, err);
                        return err;
+               }
 
                if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
                        image_get_magic(header) == FDT_MAGIC) {