Bring initial support for Allwinner A20 SoC (Cubieboard2).

	Add support for A20 timer.
	Correct interrupt offset depending from chip.
	Add basic code for CPU configuration module.
	For now, add kernel config and dts file
	(only FDT blob related problem needs to be solved later in
	order to have one kernel for both cubieboard1 and 2).

Approved by: ray@

1 files changed, 141 insertions, 0 deletions

diff --git a/sys/boot/fdt/dts/cubieboard2.dts b/sys/boot/fdt/dts/cubieboard2.dts
new file mode 100644
index 0000000..0600ced
--- /dev/null
+++ b/sys/boot/fdt/dts/cubieboard2.dts
@@ -0,0 +1,141 @@
+/*-
+ * Copyright (c) 2013 Ganbold Tsagaankhuu <ganbold@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * $FreeBSD$
+ */
+
+/dts-v1/;
+
+/ {
+	model = "Cubietech Cubieboard2";
+	compatible = "cubietech,a20-cubieboard", "allwinner,sun7i-a20";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	interrupt-parent = <&GIC>;
+
+	memory {
+		device_type = "memory";
+		reg = < 0x40000000 0x20000000 >;	/* 512MB RAM */
+	};
+
+	aliases {
+		soc = &SOC;
+		UART0 = &UART0;
+	};
+
+	SOC: a20 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "simple-bus";
+		ranges;
+		bus-frequency = <0>;
+
+		GIC: interrupt-controller@01c81000 {
+			compatible = "arm,gic";
+			reg = 	<0x01c81000 0x1000>,	/* Distributor Registers */
+				<0x01c82000 0x0100>;	/* CPU Interface Registers */
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		cpu-cfg@01c20000 {
+			compatible = "allwinner,sun7i-cpu-cfg";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = < 0x01c25c00 0x400 >;
+		};
+
+		ccm@01c20000 {
+			compatible = "allwinner,sun4i-ccm";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = < 0x01c20000 0x400 >;
+		};
+
+		timer@01c20c00 {
+			compatible = "allwinner,sun7i-timer";
+			reg = <0x01c20c00 0x90>;
+			interrupts = < 22 >;
+			interrupt-parent = <&GIC>;
+			clock-frequency = < 24000000 >;
+		};
+
+		watchdog@01c20c90 {
+			compatible = "allwinner,sun4i-wdt";
+			reg = <0x01c20c90 0x10>;
+		};
+
+		GPIO: gpio@01c20800 {
+			#gpio-cells = <3>;
+			compatible = "allwinner,sun4i-gpio";
+			gpio-controller;
+			reg =<  0x01c20800 0x400 >;
+			interrupts = < 28 >;
+			interrupt-parent = <&GIC>;
+		};
+
+		usb1: usb@01c14000 {
+			compatible = "allwinner,usb-ehci", "usb-ehci";
+			reg = <0x01c14000 0x1000>;
+			interrupts = < 39 >;
+			interrupt-parent = <&GIC>;
+		};
+
+		usb2: usb@01c1c000 {
+			compatible = "allwinner,usb-ehci", "usb-ehci";
+			reg = <0x01c1c000 0x1000>;
+			interrupts = < 40 >;
+			interrupt-parent = <&GIC>;
+		};
+
+		sata@01c18000 {
+			compatible = "allwinner,ahci";
+			reg = <0x01c18000 0x1000>;
+			interrupts = <56>;
+			interrupt-parent = <&GIC>;
+		};
+
+		UART0: serial@01c28000 {
+			status = "okay";
+			compatible = "ns16550";
+			reg = <0x01c28000 0x400>;
+			reg-shift = <2>;
+			interrupts = <1>;
+			interrupt-parent = <&GIC>;
+			current-speed = <115200>;
+			clock-frequency = < 24000000 >;
+			busy-detect = <1>;
+			broken-txfifo = <1>;
+		};
+	};
+
+	chosen {
+		bootargs = "-v";
+		stdin = "UART0";
+		stdout = "UART0";
+	};
+};
+