Added U-Boot SPI and its support files

docs/files/software/boot_spi_en.cmd

@@ -0,0 +1,47 @@
+# DO NOT EDIT THIS FILE
+#
+# Please edit /boot/armbianEnv.txt to set supported parameters
+#
+
+# default values
+setenv rootdev "/dev/mmcblk0p1"
+setenv rootfstype "ext4"
+setenv verbosity "1"
+setenv prefix "/boot/"
+setenv boot_interface "mmc"
+setenv ethaddr "00:50:43:84:fb:2f"
+setenv eth1addr "00:50:43:25:fb:84"
+
+# fdtfile should come from compile-time u-boot patches
+if test -z "${fdtfile}"; then
+	setenv fdtfile "armada-388-helios4.dtb"
+fi
+
+echo "Boot script loaded from ${boot_interface}"
+
+if load ${boot_interface} 0:1 ${loadaddr} ${prefix}armbianEnv.txt; then
+	env import -t ${loadaddr} ${filesize}
+fi
+
+setenv bootargs "console=ttyS0,115200 root=${rootdev} rootwait rootfstype=${rootfstype} ubootdev=${boot_interface} scandelay loglevel=${verbosity} usb-storage.quirks=${usbstoragequirks} ${extraargs}"
+
+ext4load  ${boot_interface} 0:1 ${fdt_addr} ${prefix}dtb/${fdtfile}
+ext4load  ${boot_interface} 0:1 ${ramdisk_addr_r} ${prefix}uInitrd
+ext4load  ${boot_interface} 0:1 ${kernel_addr_r} ${prefix}zImage
+
+setenv fdt_high 0xffffffff
+setenv initrd_high 0xffffffff
+
+fdt addr ${fdt_addr}
+fdt resize
+
+# Update device tree node
+fdt set /soc/internal-regs/sata@e0000 status "disabled"
+fdt set /soc/internal-regs/sata@a8000 status "disabled"
+fdt set /soc/spi@10680 status "okay"
+fdt set /soc/spi@10680/spi-flash@0 status "okay"
+
+bootz ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr}
+
+# Recompile with:
+# mkimage -C none -A arm -T script -d boot_spi_en.cmd /boot_spi_en.scr