spl: spi: Support full fitImage handling

Handle the case where the full fitImage support is enabled. In this
case, the whole fitImage must be loaded up front as some parts of the
fitImage code require memory-mapped access to the entire fitImage.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>

common/spl/spl_spi.c

@@ -110,8 +110,17 @@ static int spl_spi_load_image(struct spl_image_info *spl_image,
 			return err;
 		}
 
-		if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
-			image_get_magic(header) == FDT_MAGIC) {
+		if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
+		    image_get_magic(header) == FDT_MAGIC) {
+			err = spi_flash_read(flash, payload_offs,
+					     roundup(fdt_totalsize(header), 4),
+					     (void *)CONFIG_SYS_LOAD_ADDR);
+			if (err)
+				return err;
+			err = spl_parse_image_header(spl_image,
+					(struct image_header *)CONFIG_SYS_LOAD_ADDR);
+		} else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
+			   image_get_magic(header) == FDT_MAGIC) {
 			struct spl_load_info load;
 
 			debug("Found FIT\n");