configs/ti_am64x_sk: new defconfig

Adds support for TI's SK-AM64 board by introducing the
ti_am64x_sk_defconfig file and related support files.

More information about the board can be found at:
https://www.ti.com/tool/SK-AM64

Signed-off-by: Xuanhao Shi <x-shi@ti.com>
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Acked-by: Andrew Davis <afd@ti.com>
Tested-by: Bryan Brattlof <bb@ti.com>
Cc: Romain Naour <romain.naour@gmail.com>
Reviewed-by: Francois Perrad <francois.perrad@gadz.org>
Reviewed-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/ti/am64x-sk/genimage.cfg

@@ -0,0 +1,27 @@
+image boot.vfat {
+	vfat {
+		files = {
+			"tiboot3.bin",
+			"tispl.bin",
+			"u-boot.img",
+		}
+	}
+
+	size = 16M
+}
+
+image sdcard.img {
+	hdimage {
+	}
+
+	partition u-boot {
+		partition-type = 0xC
+		bootable = "true"
+		image = "boot.vfat"
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+	}
+}

board/ti/am64x-sk/readme.txt

@@ -0,0 +1,34 @@
+Texas Instuments SK-AM64 Test and Development Board
+
+Description
+===========
+
+This configuration will build a complete image for the TI SK-AM64
+board: https://www.ti.com/tool/SK-AM64.
+
+How to Build
+============
+
+Select the default configuration for the target:
+
+$ make am64x_sk_defconfig
+
+Optional: modify the configuration:
+
+$ make menuconfig
+
+Build:
+
+$ make
+
+To copy the resultimg output image file to an SD card use dd:
+
+$ dd if=output/images/sdcard.img of=/dev/sdX bs=1M
+
+How to Run
+==========
+
+Insert the SD card into the SK-AM62 board, and power it up through the
+USB Type-C connector. The system should come up. You can use a
+micro-USB cable to connect to the connector labeled DEBUG CONSOLE to
+communicate with the board.