[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, 9 deletions

diff --git a/lib_arm/bootm.c b/lib_arm/bootm.c
index 31c2d6722..4849c8ab0 100644
--- a/lib_arm/bootm.c
+++ b/lib_arm/bootm.c
@@ -56,24 +56,38 @@ static void setup_end_tag (bd_t *bd);
 static void setup_videolfb_tag (gd_t *gd);
 # endif
 
-
 static struct tag *params;
 #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
 
+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 zero, int arch, uint params);
-	bd_t *bd = gd->bd;
-	int machid = bd->bi_arch_number;
-	char *s;
+	ulong	initrd_start, initrd_end;
+	ulong	ep = 0;
+	bd_t	*bd = gd->bd;
+	char	*s;
+	int	machid = bd->bi_arch_number;
+	void	(*theKernel)(int zero, int arch, uint params);
 
 #ifdef CONFIG_CMDLINE_TAG
 	char *commandline = getenv ("bootargs");
 #endif
 
-	theKernel = (void (*)(int, int, uint))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 ("ARM 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, int, uint))ep;
 
 	s = getenv ("machid");
 	if (s) {
@@ -81,7 +95,7 @@ void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
 		printf ("Using machid 0x%x from environment\n", machid);
 	}
 
-	get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
+	get_ramdisk (cmdtp, flag, argc, argv, images, verify,
 			IH_ARCH_ARM, &initrd_start, &initrd_end);
 
 	show_boot_progress (15);