tools: mkimage: Add Amlogic Boot Image type

Add support for creating an Amlogic Boot Image that pass CHK in BL1 on
Amlogic AArch64 SoCs.

Images can optionally be signed for secure boot scenario, however
creation of signed images has not been implemented.

Example of how to use it:
  # Create an amlogic boot image
  tools/mkimage -T amlimage -n gxbb -d u-boot-spl.bin u-boot-amlogic.bin

  # List boot image header information
  tools/mkimage -l u-boot-amlogic.bin

  # Extract amlogic boot image payload
  tools/dumpimage -T amlimage -o bl2-payload.bin u-boot-amlogic.bin

Or with binman using something like:
  binman {
	u-boot-amlogic {
		filename = "u-boot-amlogic.bin";
		pad-byte = <0xff>;

		mkimage {
			filename = "bl2.bin";
			args = "-n", "gxbb", "-T", "amlimage";

			u-boot-spl {
			};
		};
	};
  };

Reviewed-by: Neil Armstrong <[email protected]>
Signed-off-by: Jonas Karlman <[email protected]>
[Ferass: check digest type in _print_header, version in _verify_image]
Signed-off-by: Ferass El Hafidi <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Neil Armstrong <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/image.h b/include/image.h
index d543c6cf254..ae844ec7e02 100644
--- a/include/image.h
+++ b/include/image.h
@@ -234,6 +234,7 @@ enum image_type_t {
 	IH_TYPE_STARFIVE_SPL,		/* StarFive SPL image */
 	IH_TYPE_TFA_BL31,		/* TFA BL31 image */
 	IH_TYPE_STM32IMAGE_V2,		/* STMicroelectronics STM32 Image V2.0 */
+	IH_TYPE_AMLIMAGE,		/* Amlogic Boot Image */
 
 	IH_TYPE_COUNT,			/* Number of image types */
 };