sunxi: enable automatic FIT build for 64-bit SoCs

The Allwinner SoCs with 64-bit cores use an ARM Trusted Firmware binary,
which needs to be loaded alongside U-Boot proper.
Set the respective Kconfig options to let them select this feature and
also automatically build the FIT image.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
[Rename Kconfig path to arch/arm/mach-sunxi/Kconfig]
Signed-off-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>

Kconfig

@@ -252,6 +252,7 @@ config SPL_FIT_SOURCE
 config SPL_FIT_GENERATOR
 	string ".its file generator script for U-Boot FIT image"
 	depends on SPL_FIT
+	default "board/sunxi/mksunxi_fit_atf.sh" if SPL_LOAD_FIT && ARCH_SUNXI
 	help
 	  Specifies a (platform specific) script file to generate the FIT
 	  source file used to build the U-Boot FIT image file. This gets

arch/arm/mach-sunxi/Kconfig

@@ -143,12 +143,16 @@ config MACH_SUN50I
 	select SUNXI_GEN_SUN6I
 	select SUNXI_HIGH_SRAM
 	select SUPPORT_SPL
+	select FIT
+	select SPL_LOAD_FIT
 
 config MACH_SUN50I_H5
 	bool "sun50i (Allwinner H5)"
 	select ARM64
 	select MACH_SUNXI_H3_H5
 	select SUNXI_HIGH_SRAM
+	select FIT
+	select SPL_LOAD_FIT
 
 endchoice
 

include/configs/sunxi-common.h

@@ -32,6 +32,10 @@
 # define CONFIG_MACH_TYPE_COMPAT_REV	1
 #endif
 
+#ifdef CONFIG_ARM64
+#define CONFIG_BUILD_TARGET "u-boot.itb"
+#endif
+
 /* Serial & console */
 #define CONFIG_SYS_NS16550_SERIAL
 /* ns16550 reg in the low bits of cpu reg */