[U-Boot] [PATCH V2] Restore compatibility of image type IDs

[Stefano Babic]

Commit a2b96ece5be146f4995d737f047e5bbb76079b8f breaks the enumeration
of the Image Types. New image types can be appended, but they cannot be
inserted in the list else backward compatibility is broken.

This restores the images types as before 2018.11 and move i.MX8 related
images at the end.

Signed-off-by: Robert Berger <robert.berger at ReliableEmbeddedSystems.com>
Signed-off-by: Stefano Babic <sbabic at denx.de>
CC: Tom Rini <trini at konsulko.com>
---

V2:

- inprove comments in the structure to make clear that 
just append is allowed.

 include/image.h | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/include/image.h b/include/image.h
index 7ce9670c20..5989c14273 100644
--- a/include/image.h
+++ b/include/image.h
@@ -126,7 +126,8 @@ enum ih_category {
  * Operating System Codes
  *
  * The following are exposed to uImage header.
- * Do not change values for backward compatibility.
+ * New IDs *MUST* be appended at the end of the list and *NEVER*
+ * inserted for backward compatibility.
  */
 enum {
 	IH_OS_INVALID		= 0,	/* Invalid OS	*/
@@ -164,7 +165,8 @@ enum {
  * CPU Architecture Codes (supported by Linux)
  *
  * The following are exposed to uImage header.
- * Do not change values for backward compatibility.
+ * New IDs *MUST* be appended at the end of the list and *NEVER*
+ * inserted for backward compatibility.
  */
 enum {
 	IH_ARCH_INVALID		= 0,	/* Invalid CPU	*/
@@ -237,7 +239,8 @@ enum {
  *	as command interpreter (=> Shell Scripts).
  *
  * The following are exposed to uImage header.
- * Do not change values for backward compatibility.
+ * New IDs *MUST* be appended at the end of the list and *NEVER*
+ * inserted for backward compatibility.
  */
 
 enum {
@@ -252,7 +255,6 @@ enum {
 	IH_TYPE_FLATDT,			/* Binary Flat Device Tree Blob	*/
 	IH_TYPE_KWBIMAGE,		/* Kirkwood Boot Image		*/
 	IH_TYPE_IMXIMAGE,		/* Freescale IMXBoot Image	*/
-	IH_TYPE_IMX8IMAGE,		/* Freescale IMX8Boot Image	*/
 	IH_TYPE_UBLIMAGE,		/* Davinci UBL Image		*/
 	IH_TYPE_OMAPIMAGE,		/* TI OMAP Config Header Image	*/
 	IH_TYPE_AISIMAGE,		/* TI Davinci AIS Image		*/
@@ -280,6 +282,7 @@ enum {
 	IH_TYPE_STM32IMAGE,		/* STMicroelectronics STM32 Image */
 	IH_TYPE_SOCFPGAIMAGE_V1,	/* Altera SOCFPGA A10 Preloader	*/
 	IH_TYPE_IMX8MIMAGE,		/* Freescale IMX8MBoot Image	*/
+	IH_TYPE_IMX8IMAGE,		/* Freescale IMX8Boot Image	*/
 	IH_TYPE_MTKIMAGE,		/* MediaTek BootROM loadable Image */
 
 	IH_TYPE_COUNT,			/* Number of image types */
@@ -289,7 +292,8 @@ enum {
  * Compression Types
  *
  * The following are exposed to uImage header.
- * Do not change values for backward compatibility.
+ * New IDs *MUST* be appended at the end of the list and *NEVER*
+ * inserted for backward compatibility.
  */
 enum {
 	IH_COMP_NONE		= 0,	/*  No	 Compression Used	*/
-- 
2.17.1