[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, 49 insertions, 4 deletions

diff --git a/include/image.h b/include/image.h
index 502d35a3ef..2f4b67d445 100644
--- a/include/image.h
+++ b/include/image.h
@@ -44,6 +44,9 @@
 #define CONFIG_FIT		1
 #define CONFIG_OF_LIBFDT	1
 
+/* enable fit_format_error(), fit_format_warning() */
+#define CONFIG_FIT_VERBOSE	1
+
 #if defined(CONFIG_FIT) && !defined(CONFIG_OF_LIBFDT)
 #error "CONFIG_OF_LIBFDT not enabled, required by CONFIG_FIT!"
 #endif
@@ -176,6 +179,33 @@ typedef struct image_header {
 } image_header_t;
 
 /*
+ * Legacy and FIT format headers used by do_bootm() and do_bootm_<os>()
+ * routines.
+ */
+typedef struct bootm_headers {
+	/*
+	 * Legacy os image header, if it is a multi component image
+	 * then get_ramdisk() and get_fdt() will attempt to get
+	 * data from second and third component accordingly.
+	 */
+	image_header_t	*legacy_hdr_os;
+	ulong		legacy_hdr_valid;
+
+#if defined(CONFIG_FIT)
+	void		*fit_hdr_os;	/* os FIT image header */
+	char		*fit_uname_os;	/* os subimage node unit name */
+
+	void		*fit_hdr_rd;	/* init ramdisk FIT image header */
+	char		*fit_uname_rd;	/* init ramdisk node unit name */
+
+#if defined(CONFIG_PPC)
+	void		*fit_hdr_fdt;	/* FDT blob FIT image header */
+	char		*fit_uname_fdt;	/* FDT blob node unit name */
+#endif
+#endif
+} bootm_headers_t;
+
+/*
  * Some systems (for example LWMON) have very short watchdog periods;
  * we must make sure to split long operations like memmove() or
  * crc32() into reasonable chunks.
@@ -355,7 +385,7 @@ image_header_t* image_get_ramdisk (cmd_tbl_t *cmdtp, int flag,
 		ulong rd_addr, uint8_t arch, int verify);
 
 void get_ramdisk (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
-		image_header_t *hdr, int verify, uint8_t arch,
+		bootm_headers_t *images, int verify, uint8_t arch,
 		ulong *rd_start, ulong *rd_end);
 
 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
@@ -368,14 +398,29 @@ ulong get_boot_cmdline (ulong alloc_current, ulong *cmd_start, ulong *cmd_end);
 ulong get_boot_kbd (ulong alloc_current, bd_t **kbd);
 #endif /* CONFIG_PPC || CONFIG_M68K */
 
+/*******************************************************************/
+/* New uImage format */
+/*******************************************************************/
 #if defined(CONFIG_FIT)
-/*
- * New uImage format
- */
 inline int fit_parse_conf (const char *spec, ulong addr_curr,
 		ulong *addr, const char **conf_name);
 inline int fit_parse_subimage (const char *spec, ulong addr_curr,
 		ulong *addr, const char **image_name);
+
+#ifdef CONFIG_FIT_VERBOSE
+#define fit_unsupported(msg)	printf ("! %s:%d " \
+				"FIT images not supported for '%s'\n", \
+				__FILE__, __LINE__, (msg))
+
+#define fit_unsupported_reset(msg)	printf ("! %s:%d " \
+				"FIT images not supported for '%s' " \
+				"- must reset board to recover!\n", \
+				__FILE__, __LINE__, (msg))
+#else
+#define fit_unsupported(msg)
+#define fit_unsupported_reset(msg)
+#endif /* CONFIG_FIT_VERBOSE */
+
 #endif /* CONFIG_FIT */
 
 #endif /* USE_HOSTCC */