[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, 19 insertions, 4 deletions

diff --git a/lib_microblaze/bootm.c b/lib_microblaze/bootm.c
index bccfbe1..1455211 100644
--- a/lib_microblaze/bootm.c
+++ b/lib_microblaze/bootm.c
@@ -32,14 +32,29 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
 void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
-		     image_header_t *hdr, int verify)
+		     bootm_headers_t *images, int verify)
 {
 	/* First parameter is mapped to $r5 for kernel boot args */
-	void (*theKernel) (char *);
-	char *commandline = getenv ("bootargs");
+	void	(*theKernel) (char *);
+	char	*commandline = getenv ("bootargs");
+	ulong	ep = 0;
 
-	theKernel = (void (*)(char *))image_get_ep (hdr);
+	/* find kernel entry point */
+	if (images->legacy_hdr_valid) {
+		ep = image_get_ep (images->legacy_hdr_os);
+#if defined(CONFIG_FIT)
+	} else if (images->fit_uname_os) {
+		fit_unsupported_reset ("MICROBLAZE linux bootm");
+		do_reset (cmdtp, flag, argc, argv);
+#endif
+	} else {
+		puts ("Could not find kernel entry point!\n");
+		do_reset (cmdtp, flag, argc, argv);
+	}
+	theKernel = (void (*)(char *))ep;
 
 	show_boot_progress (15);