powerpc: Add support for the MPC852 based mgsuvd board from keymile.

Supported SMC1 (serial console), SCC3 Ethernet (10Mbps hdx).
Signed-off-by: NHeiko Schocher <hs@denx.de>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/mgsuvd.dts

+/*
+ * MGSUVD Device Tree Source
+ *
+ * Copyright 2008 DENX Software Engineering GmbH
+ * Heiko Schocher <hs@denx.de>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+/dts-v1/;
+/ {
+	model = "MGSUVD";
+	compatible = "keymile,mgsuvd";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,852@0 {
+			device_type = "cpu";
+			reg = <0>;
+			d-cache-line-size = <16>;
+			i-cache-line-size = <16>;
+			d-cache-size = <8192>;
+			i-cache-size = <8192>;
+			timebase-frequency = <0>;	/* Filled in by u-boot */
+			bus-frequency = <0>;		/* Filled in by u-boot */
+			clock-frequency = <0>;		/* Filled in by u-boot */
+			interrupts = <15 2>;		/* decrementer interrupt */
+			interrupt-parent = <&PIC>;
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <00000000 0x4000000>;  /* Filled in by u-boot */
+	};
+
+	localbus@fff00100 {
+		compatible = "fsl,mpc852-localbus", "fsl,pq1-localbus", "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <1>;
+		reg = <0xfff00100 0x40>;
+
+		ranges = <0 0 0xf0000000 0x01000000>;  /* Filled in by u-boot */
+
+		flash@0,0 {
+			compatible = "cfi-flash";
+			reg = <0 0 0x1000000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			bank-width = <1>;
+			device-width = <1>;
+			partition@0 {
+				label = "u-boot";
+				reg = <0 0x80000>;
+			};
+			partition@80000 {
+				label = "env";
+				reg = <0x80000 0x20000>;
+			};
+			partition@a0000 {
+				label = "kernel";
+				reg = <0xa0000 0x1e0000>;
+			};
+			partition@280000 {
+				label = "dtb";
+				reg = <0x280000 0x20000>;
+			};
+			partition@2a0000 {
+			        label = "root";
+			        reg = <0x2a0000 0x500000>;
+			};
+			partition@7a0000 {
+			        label = "user";
+			        reg = <0x7a0000 0x860000>;
+			};
+		};
+	};
+
+	soc@fff00000 {
+		compatible = "fsl,mpc852", "fsl,pq1-soc", "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		device_type = "soc";
+		ranges = <0 0xfff00000 0x00004000>;
+
+		PIC: interrupt-controller@0 {
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			reg = <0 24>;
+			compatible = "fsl,mpc852-pic", "fsl,pq1-pic";
+		};
+
+		cpm@9c0 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			compatible = "fsl,mpc852-cpm", "fsl,cpm1", "simple-bus";
+			interrupts = <0>;	/* cpm error interrupt */
+			interrupt-parent = <&CPM_PIC>;
+			reg = <0x9c0 10>;
+			ranges;
+
+			muram@2000 {
+				compatible = "fsl,cpm-muram";
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges = <0 0x2000 0x2000>;
+
+				data@0 {
+					compatible = "fsl,cpm-muram-data";
+					reg = <0x800 0x1800>;
+				};
+			};
+
+			brg@9f0 {
+				compatible = "fsl,mpc852-brg",
+				             "fsl,cpm1-brg",
+				             "fsl,cpm-brg";
+				reg = <0x9f0 0x10>;
+				clock-frequency = <0>; /* Filled in by u-boot */
+			};
+
+			CPM_PIC: interrupt-controller@930 {
+				interrupt-controller;
+				#interrupt-cells = <1>;
+				interrupts = <5 2 0 2>;
+				interrupt-parent = <&PIC>;
+				reg = <0x930 0x20>;
+				compatible = "fsl,cpm1-pic";
+			};
+
+			/* MON-1 */
+			serial@a80 {
+				device_type = "serial";
+				compatible = "fsl,cpm1-smc-uart";
+				reg = <0xa80 0x10 0x3fc0 0x40>;
+				interrupts = <4>;
+				interrupt-parent = <&CPM_PIC>;
+				fsl,cpm-brg = <1>;
+				fsl,cpm-command = <0x0090>;
+				current-speed = <0>; /* Filled in by u-boot */
+			};
+
+			ethernet@a40 {
+				device_type = "network";
+				compatible  = "fsl,mpc866-scc-enet",
+				              "fsl,cpm1-scc-enet";
+				reg = <0xa40 0x18 0x3e00 0x100>;
+				local-mac-address = [ 00 00 00 00 00 00 ];  /* Filled in by u-boot */
+				interrupts = <28>;
+				interrupt-parent = <&CPM_PIC>;
+				fsl,cpm-command = <0x80>;
+				fixed-link = <0 0 10 0 0>;
+			};
+		};
+	};
+};

arch/powerpc/platforms/8xx/Kconfig

@@ -49,6 +49,12 @@ config PPC_ADDER875
 	  This enables support for the Analogue & Micro Adder 875
 	  board.
 
+config PPC_MGSUVD
+	bool "MGSUVD"
+	select CPM1
+	help
+	  This enables support for the Keymile MGSUVD board.
+
 endchoice
 
 menu "Freescale Ethernet driver platform-specific options"

arch/powerpc/platforms/8xx/Makefile

@@ -6,3 +6,4 @@ obj-$(CONFIG_MPC885ADS)   += mpc885ads_setup.o
 obj-$(CONFIG_MPC86XADS)   += mpc86xads_setup.o
 obj-$(CONFIG_PPC_EP88XC)  += ep88xc.o
 obj-$(CONFIG_PPC_ADDER875) += adder875.o
+obj-$(CONFIG_PPC_MGSUVD) += mgsuvd.o

arch/powerpc/platforms/8xx/mgsuvd.c

+/*
+ *
+ * Platform setup for the Keymile mgsuvd board
+ *
+ * Heiko Schocher <hs@denx.de>
+ *
+ * Copyright 2008 DENX Software Engineering GmbH
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/ioport.h>
+#include <linux/of_platform.h>
+
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/processor.h>
+#include <asm/cpm1.h>
+#include <asm/prom.h>
+#include <asm/fs_pd.h>
+
+#include "mpc8xx.h"
+
+struct cpm_pin {
+	int port, pin, flags;
+};
+
+static __initdata struct cpm_pin mgsuvd_pins[] = {
+	/* SMC1 */
+	{CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
+	{CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
+
+	/* SCC3 */
+	{CPM_PORTA, 10, CPM_PIN_INPUT},
+	{CPM_PORTA, 11, CPM_PIN_INPUT},
+	{CPM_PORTA, 3, CPM_PIN_INPUT},
+	{CPM_PORTA, 2, CPM_PIN_INPUT},
+	{CPM_PORTC, 13, CPM_PIN_INPUT},
+};
+
+static void __init init_ioports(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mgsuvd_pins); i++) {
+		struct cpm_pin *pin = &mgsuvd_pins[i];
+		cpm1_set_pin(pin->port, pin->pin, pin->flags);
+	}
+
+	setbits16(&mpc8xx_immr->im_ioport.iop_pcso, 0x300);
+	cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_RX);
+	cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK6, CPM_CLK_TX);
+	cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
+}
+
+static void __init mgsuvd_setup_arch(void)
+{
+	cpm_reset();
+	init_ioports();
+}
+
+static __initdata struct of_device_id of_bus_ids[] = {
+	{ .compatible = "simple-bus" },
+	{},
+};
+
+static int __init declare_of_platform_devices(void)
+{
+	of_platform_bus_probe(NULL, of_bus_ids, NULL);
+	return 0;
+}
+machine_device_initcall(mgsuvd, declare_of_platform_devices);
+
+static int __init mgsuvd_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+	return of_flat_dt_is_compatible(root, "keymile,mgsuvd");
+}
+
+define_machine(mgsuvd) {
+	.name           = "MGSUVD",
+	.probe          = mgsuvd_probe,
+	.setup_arch     = mgsuvd_setup_arch,
+	.init_IRQ       = mpc8xx_pics_init,
+	.get_irq        = mpc8xx_get_irq,
+	.restart        = mpc8xx_restart,
+	.calibrate_decr = mpc8xx_calibrate_decr,
+	.set_rtc_time   = mpc8xx_set_rtc_time,
+	.get_rtc_time   = mpc8xx_get_rtc_time,
+};