[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_avr32/bootm.c b/lib_avr32/bootm.c
index a934cae9d98..c449394e6b7 100644
--- a/lib_avr32/bootm.c
+++ b/lib_avr32/bootm.c
@@ -34,6 +34,8 @@ DECLARE_GLOBAL_DATA_PTR;
 /* CPU-specific hook to allow flushing of caches, etc. */
 extern void prepare_to_boot(void);
 
+extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
 static struct tag *setup_start_tag(struct tag *params)
 {
 	params->hdr.tag = ATAG_CORE;
@@ -172,17 +174,29 @@ static void setup_end_tag(struct tag *params)
 }
 
 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 magic, void *tagtable);
-	struct tag *params, *params_start;
-	char *commandline = getenv("bootargs");
-
-	theKernel = (void *)image_get_ep (hdr);
+	ulong	initrd_start, initrd_end;
+	ulong	ep = 0;
+	void	(*theKernel)(int magic, void *tagtable);
+	struct	tag *params, *params_start;
+	char	*commandline = getenv("bootargs");
+
+	/* 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 ("AVR32 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 *)ep;
 
-	get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
+	get_ramdisk (cmdtp, flag, argc, argv, images, verify,
 			IH_ARCH_AVR32, &initrd_start, &initrd_end);
 
 	show_boot_progress (15);