imx8mm-evk: Generate a single bootable flash.bin again

After the conversion to binman in commit 8996e6b7c6a1 ("imx8mm_evk: switch
to use binman to pack images"), it is necessary to flash both flash.bin and
u-boot.itb to get a bootable system. Prior to this commit, only flash.bin
was needed.

Such new requirement breaks existing distro mechanisms to generate the
final binary because the extra u-boot.itb is now required.

Generate a final flash.bin that can be used again as a single
bootable binary to keep the original behavior.

After this change the SPL binary is called spl.bin, which is a more
descriptive name for its purpose, and can still be used standalone
(for example, for secure boot purposes).

Also update imx8mm_evk.rst to remove the u-boot.itb copy step.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Heiko Thiery <heiko.thiery@gmail.com>

1 files changed, 18 insertions, 1 deletions

diff --git a/arch/arm/dts/imx8mm-evk-u-boot.dtsi b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
index f200afa..3c75415 100644
--- a/arch/arm/dts/imx8mm-evk-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
@@ -150,7 +150,9 @@
 	};
 
 
-       flash {
+	spl {
+		filename = "spl.bin";
+
 		mkimage {
 			args = "-n spl/u-boot-spl.cfgout -T imx8mimage -e 0x7e1000";
 
@@ -217,4 +219,19 @@
 			};
 		};
 	};
+
+	imx-boot {
+		filename = "flash.bin";
+		pad-byte = <0x00>;
+
+		spl: blob-ext@1 {
+			offset = <0x0>;
+			filename = "spl.bin";
+		};
+
+		uboot: blob-ext@2 {
+			offset = <0x57c00>;
+			filename = "u-boot.itb";
+		};
+	};
 };