[new uImage] Add dual format uImage support framework

This patch adds framework for dual format images. Format detection is added
and the bootm controll flow is updated to include cases for new FIT format
uImages.

When the legacy (image_header based) format is detected appropriate
legacy specific handling is invoked. For the new (FIT based) format uImages
dual boot framework has a minial support, that will only print out a
corresponding debug messages. Implementation of the FIT specific handling will
be added in following patches.

Signed-off-by: Marian Balakowicz <m8@semihalf.com>

1 files changed, 23 insertions, 10 deletions

diff --git a/common/cmd_usb.c b/common/cmd_usb.c
index 3f1aa7d..ad3873c 100644
--- a/common/cmd_usb.c
+++ b/common/cmd_usb.c
@@ -386,21 +386,34 @@ int do_usbboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 		return 1;
 	}
 
-	hdr = (image_header_t *)addr;
+	switch (gen_image_get_format ((void *)addr)) {
+	case IMAGE_FORMAT_LEGACY:
+		hdr = (image_header_t *)addr;
 
-	if (!image_check_magic (hdr)) {
-		printf("\n** Bad Magic Number **\n");
-		return 1;
-	}
+		if (!image_check_magic (hdr)) {
+			printf("\n** Bad Magic Number **\n");
+			return 1;
+		}
+
+		if (!image_check_hcrc (hdr)) {
+			puts ("\n** Bad Header Checksum **\n");
+			return 1;
+		}
 
-	if (!image_check_hcrc (hdr)) {
-		puts ("\n** Bad Header Checksum **\n");
+		image_print_contents (hdr);
+
+		cnt = image_get_image_size (hdr);
+		break;
+#if defined(CONFIG_FIT)
+	case IMAGE_FORMAT_FIT:
+		fit_unsupported ("usbboot");
+		return 1;
+#endif
+	default:
+		puts ("** Unknown image type\n");
 		return 1;
 	}
 
-	image_print_contents (hdr);
-
-	cnt = image_get_image_size (hdr);
 	cnt += info.blksz - 1;
 	cnt /= info.blksz;
 	cnt -= 1;