[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, 22 insertions, 10 deletions

diff --git a/lib_mips/bootm.c b/lib_mips/bootm.c
index fb91c76..5c2f28e 100644
--- a/lib_mips/bootm.c
+++ b/lib_mips/bootm.c
@@ -43,20 +43,32 @@ static int	linux_env_idx;
 static void linux_params_init (ulong start, char * commandline);
 static void linux_env_set (char * env_name, char * env_val);
 
+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)
 {
-	ulong initrd_start, initrd_end;
-
-	void (*theKernel) (int, char **, char **, int *);
-	char *commandline = getenv ("bootargs");
-	char env_buf[12];
-
-	theKernel =
-		(void (*)(int, char **, char **, int *))image_get_ep (hdr);
+	ulong	initrd_start, initrd_end;
+	ulong	ep = 0;
+	void	(*theKernel) (int, char **, char **, int *);
+	char	*commandline = getenv ("bootargs");
+	char	env_buf[12];
+
+	/* 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 ("MIPS 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 (*)(int, char **, char **, int *))ep;
 
-	get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
+	get_ramdisk (cmdtp, flag, argc, argv, images, verify,
 			IH_ARCH_MIPS, &initrd_start, &initrd_end);
 
 	show_boot_progress (15);