path: root/target/linux/mpc83xx/patches/001-rb600.patch

--- /dev/null
+++ b/arch/powerpc/boot/dts/rb600.dts
@@ -0,0 +1,242 @@
+/*
+ * RouterBOARD 600 series Device Tree Source
+ *
+ * Copyright 2009 Michael Guntsche <mike@it-loops.com>
+ *
+ * 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 = "RB600";
+	compatible = "MPC83xx";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	aliases {
+		ethernet0 = &enet0;
+		ethernet1 = &enet1;
+	};
+
+	chosen {
+		linux,stdout-path = "/soc8343@e0000000/serial@4500";
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		PowerPC,8343E@0 {
+			device_type = "cpu";
+			reg = <0x0>;
+			d-cache-line-size = <0x20>;
+			i-cache-line-size = <0x20>;
+			d-cache-size = <0x8000>;
+			i-cache-size = <0x8000>;
+			timebase-frequency = <0x0000000>; // filled by the bootwrapper from the firmware blob
+			clock-frequency = <0x00000000>; // filled by the bootwrapper from the firmware blob
+		};
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x0 0x0000000>; // filled by the bootwrapper from the firmware blob
+	};
+
+	cf@f9200000 {
+		lb-timings = <0x5dc 0x3e8 0x1194 0x5dc 0x2af8>;
+		interrupt-at-level = <0x0>;
+		interrupt-parent = <&ipic>;
+		interrupts = <0x16 0x8>;
+		lbc_extra_divider = <0x1>;
+		reg = <0xf9200000 0x200000>;
+		device_type = "rb,cf";
+	};
+
+	cf@f9000000 {
+		lb-timings = <0x5dc 0x3e8 0x1194 0x5dc 0x2af8>;
+		interrupt-at-level = <0x0>;
+		interrupt-parent = <&ipic>;
+		interrupts = <0x14 0x8>;
+		lbc_extra_divider = <0x1>;
+		reg = <0xf9000000 0x200000>;
+		device_type = "rb,cf";
+	};
+
+	flash {
+		reg = <0xff800000 0x20000>;
+	};
+
+	nnand {
+		reg = <0xf0000000 0x1000>;
+	};
+
+	nand {
+		ale = <&gpio 0x6>;
+		cle = <&gpio 0x5>;
+		nce = <&gpio 0x4>;
+		rdy = <&gpio 0x3>;
+		reg = <0xf8000000 0x1000>;
+		device_type = "rb,nand";
+	};
+
+	fancon {
+		interrupt-parent = <&ipic>;
+		interrupts = <0x17 0x8>;
+		sense = <&gpio 0x7>;
+		fan_on = <&gpio 0x9>;
+	};
+
+	pci0: pci@e0008500 {
+		device_type = "pci";
+		compatible = "fsl,mpc8349-pci";
+		reg = <0xe0008500 0x100 0xe0008300 0x8>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		#interrupt-cells = <1>;
+		ranges = <0x2000000 0x0 0x80000000 0x80000000 0x0 0x20000000 0x1000000 0x0 0x0 0xd0000000 0x0 0x4000000>;
+		bus-range = <0x0 0x0>;
+		interrupt-map = <
+			0x5800 0x0 0x0 0x1 &ipic 0x15 0x8
+			0x6000 0x0 0x0 0x1 &ipic 0x30 0x8
+			0x6000 0x0 0x0 0x2 &ipic 0x11 0x8
+			0x6800 0x0 0x0 0x1 &ipic 0x11 0x8
+			0x6800 0x0 0x0 0x2 &ipic 0x12 0x8
+			0x7000 0x0 0x0 0x1 &ipic 0x12 0x8
+			0x7000 0x0 0x0 0x2 &ipic 0x13 0x8
+			0x7800 0x0 0x0 0x1 &ipic 0x13 0x8
+			0x7800 0x0 0x0 0x2 &ipic 0x30 0x8
+			0x8000 0x0 0x0 0x1 &ipic 0x30 0x8
+			0x8000 0x0 0x0 0x2 &ipic 0x12 0x8
+			0x8000 0x0 0x0 0x3 &ipic 0x11 0x8
+			0x8000 0x0 0x0 0x4 &ipic 0x13 0x8
+			0xa000 0x0 0x0 0x1 &ipic 0x30 0x8
+			0xa000 0x0 0x0 0x2 &ipic 0x11 0x8
+			0xa000 0x0 0x0 0x3 &ipic 0x12 0x8
+			0xa000 0x0 0x0 0x4 &ipic 0x13 0x8
+			0xa800 0x0 0x0 0x1 &ipic 0x11 0x8
+			0xa800 0x0 0x0 0x2 &ipic 0x12 0x8
+			0xa800 0x0 0x0 0x3 &ipic 0x13 0x8
+			0xa800 0x0 0x0 0x4 &ipic 0x30 0x8>;
+		interrupt-map-mask = <0xf800 0x0 0x0 0x7>;
+		interrupt-parent = <&ipic>;
+	};
+
+	soc8343@e0000000 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		device_type = "soc";
+		compatible = "simple-bus";
+		ranges = <0x0 0xe0000000 0x100000>;
+		reg = <0xe0000000 0x200>;
+		bus-frequency = <0x1>;
+
+		led {
+			user_led = <0x400 0x8>;
+		};
+
+		beeper {
+			reg = <0x500 0x100>;
+		};
+
+		gpio: gpio@0 {
+			reg = <0xc08 0x4>;
+			device-id = <0x0>;
+			compatible = "gpio";
+			device_type = "gpio";
+		};
+
+		enet0: ethernet@25000 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			cell-index = <0>;
+			phy-handle = <&phy0>;
+			tbi-handle = <&tbi0>;
+			interrupt-parent = <&ipic>;
+			interrupts = <0x23 0x8 0x24 0x8 0x25 0x8>;
+			local-mac-address = [00 00 00 00 00 00];
+			reg = <0x25000 0x1000>;
+			ranges = <0x0 0x25000 0x1000>;
+			compatible = "gianfar";
+			model = "TSEC";
+			device_type = "network";
+
+			mdio@520 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "fsl,gianfar-tbi";
+				reg = <0x520 0x20>;
+
+				tbi0: tbi-phy@11 {
+					reg = <0x11>;
+					device_type = "tbi-phy";
+				};
+			};
+		};
+
+		enet1: ethernet@24000 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			cell-index = <1>;
+			phy-handle = <&phy1>;
+			tbi-handle = <&tbi1>;
+			interrupt-parent = <&ipic>;
+			interrupts = <0x20 0x8 0x21 0x8 0x22 0x8>;
+			local-mac-address = [00 00 00 00 00 00];
+			reg = <0x24000 0x1000>;
+			ranges = <0x0 0x24000 0x1000>;
+			compatible = "gianfar";
+			model = "TSEC";
+			device_type = "network";
+
+			mdio@520 {
+				#size-cells = <0x0>;
+				#address-cells = <0x1>;
+				reg = <0x520 0x20>;
+				compatible = "fsl,gianfar-mdio";
+
+				phy0: ethernet-phy@0 {
+					device_type = "ethernet-phy";
+					reg = <0x0>;
+				};
+
+				phy1: ethernet-phy@1 {
+					device_type = "ethernet-phy";
+					reg = <0x1>;
+				};
+
+				tbi1: tbi-phy@11 {
+					reg = <0x11>;
+					device_type = "tbi-phy";
+				};
+			};
+		};
+
+		ipic: pic@700 {
+			interrupt-controller;
+			#address-cells = <0>;
+			#interrupt-cells = <2>;
+			reg = <0x700 0x100>;
+			device_type = "ipic";
+		};
+
+		serial@4500 {
+			interrupt-parent = <&ipic>;
+			interrupts = <0x9 0x8>;
+			clock-frequency = <0xfe4f840>;
+			reg = <0x4500 0x100>;
+			compatible = "ns16550";
+			device_type = "serial";
+		};
+
+		wdt@200 {
+			reg = <0x200 0x100>;
+			compatible = "mpc83xx_wdt";
+			device_type = "watchdog";
+		};
+	};
+};
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -72,7 +72,7 @@ src-plat := of.c cuboot-52xx.c cuboot-82
 		cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c \
 		cuboot-bamboo.c cuboot-mpc7448hpc2.c cuboot-taishan.c \
 		fixed-head.S ep88xc.c ep405.c cuboot-c2k.c \
-		cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
+		cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c rb600.c \
 		cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
 		virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
 		cuboot-acadia.c cuboot-amigaone.c
@@ -229,6 +229,7 @@ image-$(CONFIG_MPC834x_ITX)		+= cuImage.
 image-$(CONFIG_MPC834x_MDS)		+= cuImage.mpc834x_mds
 image-$(CONFIG_MPC836x_MDS)		+= cuImage.mpc836x_mds
 image-$(CONFIG_ASP834x)			+= dtbImage.asp834x-redboot
+image-$(CONFIG_RB_PPC)			+= dtbImage.rb600
 
 # Board ports in arch/powerpc/platform/85xx/Kconfig
 image-$(CONFIG_MPC8540_ADS)		+= cuImage.mpc8540ads
--- /dev/null
+++ b/arch/powerpc/boot/rb600.c
@@ -0,0 +1,80 @@
+/*
+ * The RouterBOARD platform -- for booting RB600(A) RouterBOARDs.
+ *
+ * Author: Michael Guntsche <mike@it-loops.com>
+ *
+ * Copyright (c) 2009 Michael Guntsche
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "types.h"
+#include "io.h"
+#include "stdio.h"
+#include <libfdt.h>
+
+BSS_STACK(4*1024);
+
+u64 memsize64;
+const void *fw_dtb;
+
+static void rb600_fixups(void)
+{
+	const u32 *reg, *timebase, *clock;
+	int node, size;
+	void *chosen;
+	const char* bootargs;
+
+	dt_fixup_memory(0, memsize64);
+
+	/* Set the MAC addresses. */
+	node = fdt_path_offset(fw_dtb, "/soc8343@e0000000/ethernet@24000");
+	reg = fdt_getprop(fw_dtb, node, "mac-address", &size);
+	dt_fixup_mac_address_by_alias("ethernet1", (const u8 *)reg);
+
+	node = fdt_path_offset(fw_dtb, "/soc8343@e0000000/ethernet@25000");
+	reg = fdt_getprop(fw_dtb, node, "mac-address", &size);
+	dt_fixup_mac_address_by_alias("ethernet0", (const u8 *)reg);
+
+	/* Find the CPU timebase and clock frequencies. */
+	node = fdt_node_offset_by_prop_value(fw_dtb, -1, "device_type", "cpu", sizeof("cpu"));
+	timebase = fdt_getprop(fw_dtb, node, "timebase-frequency", &size);
+	clock = fdt_getprop(fw_dtb, node, "clock-frequency", &size);
+	dt_fixup_cpu_clocks(*clock, *timebase, 0);
+
+	/* Fixup chosen
+	 * The bootloader reads the kernelparm segment and adds the content to
+	 * bootargs. This is needed to specify root and other boot flags.
+	 */
+	chosen = finddevice("/chosen");
+	node = fdt_path_offset(fw_dtb, "/chosen");
+	bootargs = fdt_getprop(fw_dtb, node, "bootargs", &size);
+	setprop_str(chosen, "bootargs", bootargs);
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+		   unsigned long r6, unsigned long r7)
+{
+	const u32 *reg;
+	int node, size;
+
+	fw_dtb = (const void *)r3;
+	
+	/* Find the memory range. */
+	node = fdt_node_offset_by_prop_value(fw_dtb, -1, "device_type", "memory", sizeof("memory"));
+	reg = fdt_getprop(fw_dtb, node, "reg", &size);
+	memsize64 = reg[1];
+
+	/* Now we have the memory size; initialize the heap. */
+	simple_alloc_init(_end, memsize64 - (unsigned long)_end, 32, 64);
+
+	/* Prepare the device tree and find the console. */
+	fdt_init(_dtb_start);
+	serial_console_init();
+
+	/* Remaining fixups... */
+	platform_ops.fixups = rb600_fixups;
+}
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -201,7 +201,7 @@ ps3)
     isection=.kernel:initrd
     link_address=''
     ;;
-ep88xc|ep405|ep8248e)
+ep88xc|ep405|ep8248e|rb600)
     platformo="$object/fixed-head.o $object/$platform.o"
     binary=y
     ;;
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -104,9 +104,11 @@ obj32-$(CONFIG_PPC_PERF_CTRS)	+= mpc7450
 
 obj-$(CONFIG_8XX_MINIMAL_FPEMU) += softemu8xx.o
 
+ifneq ($(CONFIG_RB_IOMAP),y)
 ifneq ($(CONFIG_PPC_INDIRECT_IO),y)
 obj-y				+= iomap.o
 endif
+endif
 
 obj-$(CONFIG_PPC64)		+= $(obj64-y)
 obj-$(CONFIG_PPC32)		+= $(obj32-y)
--- a/arch/powerpc/platforms/83xx/Kconfig
+++ b/arch/powerpc/platforms/83xx/Kconfig
@@ -30,6 +30,15 @@ config MPC832x_RDB
 	help
 	  This option enables support for the MPC8323 RDB board.
 
+config RB_PPC
+	bool "MikroTik RouterBOARD 600 series"
+	select DEFAULT_UIMAGE
+	select QUICC_ENGINE
+	select PPC_MPC834x
+	select RB_IOMAP
+	help
+	  This option enables support for MikroTik RouterBOARD 600 series boards.
+
 config MPC834x_MDS
 	bool "Freescale MPC834x MDS"
 	select DEFAULT_UIMAGE
--- a/arch/powerpc/platforms/83xx/Makefile
+++ b/arch/powerpc/platforms/83xx/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_SUSPEND)		+= suspend.o susp
 obj-$(CONFIG_MCU_MPC8349EMITX)	+= mcu_mpc8349emitx.o
 obj-$(CONFIG_MPC831x_RDB)	+= mpc831x_rdb.o
 obj-$(CONFIG_MPC832x_RDB)	+= mpc832x_rdb.o
+obj-$(CONFIG_RB_PPC)		+= rbppc.o
 obj-$(CONFIG_MPC834x_MDS)	+= mpc834x_mds.o
 obj-$(CONFIG_MPC834x_ITX)	+= mpc834x_itx.o
 obj-$(CONFIG_MPC836x_MDS)	+= mpc836x_mds.o
--- /dev/null
+++ b/arch/powerpc/platforms/83xx/rbppc.c
@@ -0,0 +1,316 @@
+/*
+ * Copyright (C) 2008-2009 Noah Fontes <nfontes@transtruct.org>
+ * Copyright (C) 2009 Michael Guntsche <mike@it-loops.com>
+ * Copyright (C) Mikrotik 2007
+ *
+ * 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.
+ */
+
+#include <linux/delay.h>
+#include <linux/root_dev.h>
+#include <linux/initrd.h>
+#include <linux/interrupt.h>
+#include <linux/of_platform.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <asm/time.h>
+#include <asm/ipic.h>
+#include <asm/udbg.h>
+#include <asm/qe.h>
+#include <asm/qe_ic.h>
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+#include "mpc83xx.h"
+
+#define SYSCTL		0x100
+#define SICRL		0x014
+
+#define GTCFR2		0x04
+#define GTMDR4		0x22
+#define GTRFR4		0x26
+#define GTCNR4		0x2e
+#define GTVER4		0x36
+#define GTPSR4		0x3e
+
+#define GTCFR_BCM	0x40
+#define GTCFR_STP4	0x20
+#define GTCFR_RST4	0x10
+#define GTCFR_STP3	0x02
+#define GTCFR_RST3	0x01
+
+#define GTMDR_ORI	0x10
+#define GTMDR_FRR	0x08
+#define GTMDR_ICLK16	0x04
+
+extern int par_io_data_set(u8 port, u8 pin, u8 val);
+extern int par_io_config_pin(u8 port, u8 pin, int dir, int open_drain,
+			     int assignment, int has_irq);
+
+static unsigned timer_freq;
+static void *gtm;
+
+static int beeper_irq;
+static unsigned beeper_gpio_pin[2];
+
+irqreturn_t rbppc_timer_irq(int irq, void *ptr)
+{
+	static int toggle = 0;
+
+	par_io_data_set(beeper_gpio_pin[0], beeper_gpio_pin[1], toggle);
+	toggle = !toggle;
+
+	/* ack interrupt */
+	out_be16(gtm + GTVER4, 3);
+
+	return IRQ_HANDLED;
+}
+
+void rbppc_beep(unsigned freq)
+{
+	unsigned gtmdr;
+
+	if (freq > 5000) freq = 5000;
+
+	if (!gtm)
+		return;
+	if (!freq) {
+		out_8(gtm + GTCFR2, GTCFR_STP4 | GTCFR_STP3);
+		return;
+	}
+
+	out_8(gtm + GTCFR2, GTCFR_RST4 | GTCFR_STP3);
+	out_be16(gtm + GTPSR4, 255);
+	gtmdr = GTMDR_FRR | GTMDR_ICLK16;
+	if (beeper_irq != NO_IRQ) gtmdr |= GTMDR_ORI;
+	out_be16(gtm + GTMDR4, gtmdr);
+	out_be16(gtm + GTVER4, 3);
+
+	out_be16(gtm + GTRFR4, timer_freq / 16 / 256 / freq / 2);
+	out_be16(gtm + GTCNR4, 0);
+}
+EXPORT_SYMBOL(rbppc_beep);
+
+static void __init rbppc_setup_arch(void)
+{
+	struct device_node *np;
+
+	np = of_find_node_by_type(NULL, "cpu");
+	if (np) {
+		const unsigned *fp = of_get_property(np, "clock-frequency", NULL);
+		loops_per_jiffy = fp ? *fp / HZ : 0;
+
+		of_node_put(np);
+	}
+
+	np = of_find_node_by_name(NULL, "serial");
+	if (np) {
+		timer_freq =
+		    *(unsigned *) of_get_property(np, "clock-frequency", NULL);
+		of_node_put(np);
+	}
+
+#ifdef CONFIG_PCI
+	np = of_find_node_by_type(NULL, "pci");
+	if (np) {
+		mpc83xx_add_bridge(np);
+	}
+#endif
+
+#ifdef CONFIG_QUICC_ENGINE
+	np = of_find_node_by_name(np, "par_io");
+	if (np) {
+		qe_reset();
+		par_io_init(np);
+		of_node_put(np);
+
+		np = NULL;
+		while (1) {
+			np = of_find_node_by_name(np, "ucc");
+			if (!np) break;
+
+			par_io_of_config(np);
+		}
+	}
+#endif
+
+}
+
+void __init rbppc_init_IRQ(void)
+{
+	struct device_node *np;
+
+	np = of_find_node_by_type(NULL, "ipic");
+	if (np) {
+		ipic_init(np, 0);
+		ipic_set_default_priority();
+		of_node_put(np);
+	}
+
+#ifdef CONFIG_QUICC_ENGINE
+	np = of_find_node_by_type(NULL, "qeic");
+	if (np) {
+		qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
+		of_node_put(np);
+	}
+#endif
+}
+
+static int __init rbppc_probe(void)
+{
+	char *model;
+
+	model = of_get_flat_dt_prop(of_get_flat_dt_root(), "model", NULL);
+
+	if (!model)
+		return 0;
+
+	if (strcmp(model, "RB600") == 0)
+		return 1;
+
+	return 0;
+}
+
+static void __init rbppc_beeper_init(struct device_node *beeper)
+{
+	struct resource res;
+	struct device_node *gpio;
+	const unsigned *pin;
+	const unsigned *gpio_id;
+
+	if (of_address_to_resource(beeper, 0, &res)) {
+		printk(KERN_ERR "rbppc_beeper_init(%s): Beeper error: No region specified\n", beeper->full_name);
+		return;
+	}
+
+	pin = of_get_property(beeper, "gpio", NULL);
+	if (pin) {
+		gpio = of_find_node_by_phandle(pin[0]);
+
+		if (!gpio) {
+			printk(KERN_ERR "rbppc_beeper_init(%s): Beeper error: GPIO handle %x not found\n", beeper->full_name, pin[0]);
+			return;
+		}
+
+		gpio_id = of_get_property(gpio, "device-id", NULL);
+		if (!gpio_id) {
+			printk(KERN_ERR "rbppc_beeper_init(%s): Beeper error: No device-id specified in GPIO\n", beeper->full_name);
+			return;
+		}
+
+		beeper_gpio_pin[0] = *gpio_id;
+		beeper_gpio_pin[1] = pin[1];
+
+		par_io_config_pin(*gpio_id, pin[1], 1, 0, 0, 0);
+	} else {
+		void *sysctl;
+
+		sysctl = ioremap_nocache(get_immrbase() + SYSCTL, 0x100);
+		out_be32(sysctl + SICRL,
+			 in_be32(sysctl + SICRL) | (1 << (31 - 19)));
+		iounmap(sysctl);
+	}
+
+	gtm = ioremap_nocache(res.start, res.end - res.start + 1);
+
+	beeper_irq = irq_of_parse_and_map(beeper, 0);
+	if (beeper_irq != NO_IRQ) {
+		int e = request_irq(beeper_irq, rbppc_timer_irq, 0, "beeper", NULL);
+		if (e) {
+			printk(KERN_ERR "rbppc_beeper_init(%s): Request of beeper irq failed!\n", beeper->full_name);
+		}
+	}
+}
+
+#define SBIT(x) (0x80000000 >> (x))
+#define DBIT(x, y) ((y) << (32 - (((x % 16) + 1) * 2)))
+
+#define SICRL_RB600(x) ((x) + (0x114 >> 2))
+#define GPIO_DIR_RB600(x) ((x) + (0xc00 >> 2))
+#define GPIO_DATA_RB600(x) ((x) + (0xc08 >> 2))
+
+static void rbppc_restart(char *cmd)
+{
+	__be32 __iomem *reg;
+
+	reg = ioremap(get_immrbase(), 0x1000);
+	local_irq_disable();
+	out_be32(SICRL_RB600(reg), in_be32(SICRL_RB600(reg)) & ~0x00800000);
+	out_be32(GPIO_DIR_RB600(reg), in_be32(GPIO_DIR_RB600(reg)) | SBIT(2));
+	out_be32(GPIO_DATA_RB600(reg), in_be32(GPIO_DATA_RB600(reg)) & ~SBIT(2));
+
+	while (1);
+}
+
+static void rbppc_halt(void)
+{
+	while (1);
+}
+
+static struct of_device_id rbppc_ids[] = {
+	{ .type = "soc", },
+	{ .compatible = "soc", },
+	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
+	{ },
+};
+
+static int __init rbppc_declare_of_platform_devices(void)
+{
+	struct device_node *np;
+	unsigned idx;
+
+	of_platform_bus_probe(NULL, rbppc_ids, NULL);
+
+	np = of_find_node_by_type(NULL, "mdio");
+	if (np) {
+		unsigned len;
+		unsigned *res;
+		const unsigned *eres;
+		struct device_node *ep;
+
+		ep = of_find_compatible_node(NULL, "network", "ucc_geth");
+		if (ep) {
+			eres = of_get_property(ep, "reg", &len);
+			res = (unsigned *) of_get_property(np, "reg", &len);
+			if (res && eres) {
+				res[0] = eres[0] + 0x120;
+			}
+		}
+	}
+
+	np = of_find_node_by_name(NULL, "nand");
+	if (np) {
+		of_platform_device_create(np, "nand", NULL);
+	}
+
+	idx = 0;
+	for_each_node_by_type(np, "rb,cf") {
+		char dev_name[12];
+		snprintf(dev_name, sizeof(dev_name), "cf.%u", idx);
+		of_platform_device_create(np, dev_name, NULL);
+		++idx;
+	}
+
+	np = of_find_node_by_name(NULL, "beeper");
+	if (np) {
+		rbppc_beeper_init(np);
+	}
+
+	return 0;
+}
+device_initcall(rbppc_declare_of_platform_devices);
+
+define_machine(rb600) {
+	.name 				= "MikroTik RouterBOARD 600 series",
+	.probe 				= rbppc_probe,
+	.setup_arch 			= rbppc_setup_arch,
+	.init_IRQ 			= rbppc_init_IRQ,
+	.get_irq 			= ipic_get_irq,
+	.restart 			= rbppc_restart,
+	.halt				= rbppc_halt,
+	.time_init 			= mpc83xx_time_init,
+	.calibrate_decr			= generic_calibrate_decr,
+};
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -142,6 +142,10 @@ config GENERIC_IOMAP
 	bool
 	default n
 
+config RB_IOMAP
+	bool
+	default y if RB_PPC
+
 source "drivers/cpufreq/Kconfig"
 
 menu "CPU Frequency drivers"
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -56,3 +56,5 @@ obj-$(CONFIG_PPC_MPC52xx)	+= mpc5xxx_clo
 ifeq ($(CONFIG_SUSPEND),y)
 obj-$(CONFIG_6xx)		+= 6xx-suspend.o
 endif
+
+obj-$(CONFIG_RB_IOMAP)		+= rb_iomap.o
--- /dev/null
+++ b/arch/powerpc/sysdev/rb_iomap.c
@@ -0,0 +1,223 @@
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/mm.h>
+#include <asm/io.h>
+
+#define LOCALBUS_START		0x40000000
+#define LOCALBUS_MASK		0x007fffff
+#define LOCALBUS_REGMASK	0x001fffff
+
+static void __iomem *localbus_base;
+
+static inline int is_localbus(void __iomem *addr)
+{
+	return ((unsigned) addr & ~LOCALBUS_MASK) == LOCALBUS_START;
+}
+
+static inline unsigned localbus_regoff(unsigned reg) {
+	return (reg << 16) | (((reg ^ 8) & 8) << 17);
+}
+
+static inline void __iomem *localbus_addr(void __iomem *addr)
+{
+	return localbus_base
+	    + ((unsigned) addr & LOCALBUS_MASK & ~LOCALBUS_REGMASK)
+	    + localbus_regoff((unsigned) addr & LOCALBUS_REGMASK);
+}
+
+unsigned int ioread8(void __iomem *addr)
+{
+	if (is_localbus(addr))
+		return in_be16(localbus_addr(addr)) >> 8;
+	return readb(addr);
+}
+EXPORT_SYMBOL(ioread8);
+
+unsigned int ioread16(void __iomem *addr)
+{
+	if (is_localbus(addr))
+		return le16_to_cpu(in_be16(localbus_addr(addr)));
+	return readw(addr);
+}
+EXPORT_SYMBOL(ioread16);
+
+unsigned int ioread16be(void __iomem *addr)
+{
+	return in_be16(addr);
+}
+EXPORT_SYMBOL(ioread16be);
+
+unsigned int ioread32(void __iomem *addr)
+{
+	return readl(addr);
+}
+EXPORT_SYMBOL(ioread32);
+
+unsigned int ioread32be(void __iomem *addr)
+{
+	return in_be32(addr);
+}
+EXPORT_SYMBOL(ioread32be);
+
+void iowrite8(u8 val, void __iomem *addr)
+{
+	if (is_localbus(addr))
+		out_be16(localbus_addr(addr), ((u16) val) << 8);
+	else
+		writeb(val, addr);
+}
+EXPORT_SYMBOL(iowrite8);
+
+void iowrite16(u16 val, void __iomem *addr)
+{
+	if (is_localbus(addr))
+		out_be16(localbus_addr(addr), cpu_to_le16(val));
+	else
+		writew(val, addr);
+}
+EXPORT_SYMBOL(iowrite16);
+
+void iowrite16be(u16 val, void __iomem *addr)
+{
+	out_be16(addr, val);
+}
+EXPORT_SYMBOL(iowrite16be);
+
+void iowrite32(u32 val, void __iomem *addr)
+{
+	writel(val, addr);
+}
+EXPORT_SYMBOL(iowrite32);
+
+void iowrite32be(u32 val, void __iomem *addr)
+{
+	out_be32(addr, val);
+}
+EXPORT_SYMBOL(iowrite32be);
+
+void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
+{
+	if (is_localbus(addr)) {
+		unsigned i;
+		void *laddr = localbus_addr(addr);
+		u8 *buf = dst;
+
+		for (i = 0; i < count; ++i) {
+			*buf++ = in_be16(laddr) >> 8;
+		}
+	} else {
+		_insb((u8 __iomem *) addr, dst, count);
+	}
+}
+EXPORT_SYMBOL(ioread8_rep);
+
+void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
+{
+	if (is_localbus(addr)) {
+		unsigned i;
+		void *laddr = localbus_addr(addr);
+		u16 *buf = dst;
+
+		for (i = 0; i < count; ++i) {
+			*buf++ = in_be16(laddr);
+		}
+	} else {
+		_insw_ns((u16 __iomem *) addr, dst, count);
+	}
+}
+EXPORT_SYMBOL(ioread16_rep);
+
+void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
+{
+	_insl_ns((u32 __iomem *) addr, dst, count);
+}
+EXPORT_SYMBOL(ioread32_rep);
+
+void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
+{
+	if (is_localbus(addr)) {
+		unsigned i;
+		void *laddr = localbus_addr(addr);
+		const u8 *buf = src;
+
+		for (i = 0; i < count; ++i) {
+			out_be16(laddr, ((u16) *buf++) << 8);
+		}
+	} else {
+		_outsb((u8 __iomem *) addr, src, count);
+	}
+}
+EXPORT_SYMBOL(iowrite8_rep);
+
+void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
+{
+	if (is_localbus(addr)) {
+		unsigned i;
+		void *laddr = localbus_addr(addr);
+		const u16 *buf = src;
+
+		for (i = 0; i < count; ++i) {
+			out_be16(laddr, *buf++);
+		}
+	} else {
+		_outsw_ns((u16 __iomem *) addr, src, count);
+	}
+}
+EXPORT_SYMBOL(iowrite16_rep);
+
+void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
+{
+	_outsl_ns((u32 __iomem *) addr, src, count);
+}
+EXPORT_SYMBOL(iowrite32_rep);
+
+void __iomem *ioport_map(unsigned long port, unsigned int len)
+{
+	return (void __iomem *) (port + _IO_BASE);
+}
+EXPORT_SYMBOL(ioport_unmap);
+
+void ioport_unmap(void __iomem *addr)
+{
+	/* Nothing to do */
+}
+EXPORT_SYMBOL(ioport_map);
+
+void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
+{
+	unsigned long start = pci_resource_start(dev, bar);
+	unsigned long len = pci_resource_len(dev, bar);
+	unsigned long flags = pci_resource_flags(dev, bar);
+
+	if (!len)
+		return NULL;
+	if (max && len > max)
+		len = max;
+	if (flags & IORESOURCE_IO)
+		return ioport_map(start, len);
+	if (flags & IORESOURCE_MEM)
+		return ioremap(start, len);
+	/* What? */
+	return NULL;
+}
+EXPORT_SYMBOL(pci_iomap);
+
+void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
+{
+	/* Nothing to do */
+}
+EXPORT_SYMBOL(pci_iounmap);
+
+void __iomem *localbus_map(unsigned long addr, unsigned int len)
+{
+	if (!localbus_base)
+		localbus_base = ioremap(addr & ~LOCALBUS_MASK,
+					LOCALBUS_MASK + 1);
+	return (void *) (LOCALBUS_START + (addr & LOCALBUS_MASK));
+}
+EXPORT_SYMBOL(localbus_map);
+
+void localbus_unmap(void __iomem *addr)
+{
+}
+EXPORT_SYMBOL(localbus_unmap);
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -751,5 +751,12 @@ config PATA_BF54X
 
 	  If unsure, say N.
 
+config PATA_RB_PPC
+	tristate "MikroTik RB600 PATA support"
+	depends on RB_PPC
+	help
+	  This option enables support for PATA devices on MikroTik RouterBOARD
+	  600 series boards.
+
 endif # ATA_SFF
 endif # ATA
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -75,6 +75,7 @@ obj-$(CONFIG_PATA_PLATFORM)	+= pata_plat
 obj-$(CONFIG_PATA_AT91)	+= pata_at91.o
 obj-$(CONFIG_PATA_OF_PLATFORM)	+= pata_of_platform.o
 obj-$(CONFIG_PATA_ICSIDE)	+= pata_icside.o
+obj-$(CONFIG_PATA_RB_PPC)	+= pata_rbppc_cf.o
 # Should be last but two libata driver
 obj-$(CONFIG_PATA_ACPI)		+= pata_acpi.o
 # Should be last but one libata driver
--- /dev/null
+++ b/drivers/ata/pata_rbppc_cf.c
@@ -0,0 +1,701 @@
+/*
+ * Copyright (C) 2008-2009 Noah Fontes <nfontes@transtruct.org>
+ * Copyright (C) Mikrotik 2007
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+#include <linux/of_platform.h>
+#include <linux/ata_platform.h>
+
+#define DEBUG_UPM	0
+
+#define DRV_NAME	"pata_rbppc_cf"
+#define DRV_VERSION	"0.0.2"
+
+#define DEV2SEL_OFFSET	0x00100000
+
+#define IMMR_LBCFG_OFFSET	0x00005000
+#define IMMR_LBCFG_SIZE		0x00001000
+
+#define LOCAL_BUS_MCMR		0x00000078
+#define   MxMR_OP_MASK			0x30000000
+#define   MxMR_OP_NORMAL		0x00000000
+#define   MxMR_OP_WRITE			0x10000000
+#define   MxMR_OP_READ			0x20000000
+#define   MxMR_OP_RUN			0x30000000
+#define   MxMR_LUPWAIT_LOW		0x08000000
+#define   MxMR_LUPWAIT_HIGH		0x00000000
+#define   MxMR_LUPWAIT_ENABLE		0x00040000
+#define   MxMR_RLF_MASK			0x0003c000
+#define   MxMR_RLF_SHIFT			14
+#define   MxMR_WLF_MASK			0x00003c00
+#define   MxMR_WLF_SHIFT			10
+#define   MxMR_MAD_MASK			0x0000003f
+#define LOCAL_BUS_MDR		0x00000088
+#define LOCAL_BUS_LCRR		0x000000D4
+#define   LCRR_CLKDIV_MASK		0x0000000f
+
+#define LOOP_SIZE	4
+
+#define UPM_READ_SINGLE_OFFSET	0x00
+#define UPM_WRITE_SINGLE_OFFSET	0x18
+#define UPM_DATA_SIZE	0x40
+
+#define LBT_CPUIN_MIN		0
+#define LBT_CPUOUT_MIN		1
+#define LBT_CPUOUT_MAX		2
+#define LBT_EXTDEL_MIN		3
+#define LBT_EXTDEL_MAX		4
+#define LBT_SIZE		5
+
+/* UPM machine configuration bits */
+#define N_BASE	0x00f00000
+#define N_CS	0xf0000000
+#define N_CS_H1	0xc0000000
+#define N_CS_H2	0x30000000
+#define N_WE	0x0f000000
+#define N_WE_H1	0x0c000000
+#define N_WE_H2	0x03000000
+#define N_OE	0x00030000
+#define N_OE_H1	0x00020000
+#define N_OE_H2	0x00010000
+#define WAEN	0x00001000
+#define REDO_2	0x00000100
+#define REDO_3	0x00000200
+#define REDO_4	0x00000300
+#define LOOP	0x00000080
+#define NA	0x00000008
+#define UTA	0x00000004
+#define LAST	0x00000001
+
+#define REDO_VAL(mult)	(REDO_2 * ((mult) - 1))
+#define REDO_MAX_MULT	4
+
+#define READ_BASE	(N_BASE | N_WE)
+#define WRITE_BASE	(N_BASE | N_OE)
+#define EMPTY		(N_BASE | N_CS | N_OE | N_WE | LAST)
+
+#define EOF_UPM_SETTINGS	0
+#define ANOTHER_TIMING		1
+
+#define OA_CPUIN_MIN		0x01
+#define OA_CPUOUT_MAX		0x02
+#define OD_CPUOUT_MIN		0x04
+#define OA_CPUOUT_DELTA		0x06
+#define OA_EXTDEL_MAX		0x08
+#define OD_EXTDEL_MIN		0x10
+#define OA_EXTDEL_DELTA		0x18
+#define O_MIN_CYCLE_TIME	0x20
+#define O_MINUS_PREV		0x40
+#define O_HALF_CYCLE		0x80
+
+extern void __iomem *localbus_map(unsigned long addr, unsigned int len);
+extern void localbus_unmap(void __iomem *addr);
+
+struct rbppc_cf_info {
+	unsigned lbcfg_addr;
+	unsigned clk_time_ps;
+	int cur_mode;
+	u32 lb_timings[LBT_SIZE];
+};
+static struct rbppc_cf_info *rbinfo = NULL;
+
+struct upm_setting {
+	unsigned value;
+	unsigned ns[7];
+	unsigned clk_minus;
+	unsigned group_size;
+	unsigned options;
+};
+
+static const struct upm_setting cfUpmReadSingle[] = {
+	{ READ_BASE | N_OE,
+	  /* t1 - ADDR setup time */
+		{  70,  50,  30,  30,  25,  15,  10 }, 0, 0, (OA_CPUOUT_DELTA |
+							      OA_EXTDEL_MAX) },
+	{ READ_BASE | N_OE_H1,
+		{   0,   0,   0,   0,   0,   0,   0 }, 0, 0, O_HALF_CYCLE },
+	{ READ_BASE,
+	  /* t2 - OE0 time */
+		{ 290, 290, 290,  80,  70,  65,  55 }, 0, 2, (OA_CPUOUT_MAX |
+							      OA_CPUIN_MIN) },
+	{ READ_BASE | WAEN,
+		{   1,   1,   1,   1,   1,   0,   0 }, 0, 0, 0 },
+	{ READ_BASE | UTA,
+		{   1,   1,   1,   1,   1,   1,   1 }, 0, 0, 0 },
+	{ READ_BASE | N_OE,
+	  /* t9 - ADDR hold time */
+		{  20,  15,  10,  10,  10,  10,  10 }, 0, 0, (OA_CPUOUT_DELTA |
+							      OD_EXTDEL_MIN) },
+	{ READ_BASE | N_OE | N_CS_H2,
+		{   0,   0,   0,   0,   0,   0,   0 }, 0, 0, O_HALF_CYCLE },
+	{ READ_BASE | N_OE | N_CS,
+	  /* t6Z -IORD data tristate */
+		{  30,  30,  30,  30,  30,  20,  20 }, 1, 1, O_MINUS_PREV },
+	{ ANOTHER_TIMING,
+	  /* t2i -IORD recovery time */
+		{   0,   0,   0,  70,  25,  25,  20 }, 2, 0, 0 },
+	{ ANOTHER_TIMING,
+	  /* CS 0 -> 1 MAX */
+		{   0,   0,   0,   0,   0,   0,   0 }, 1, 0, (OA_CPUOUT_DELTA |
+							      OA_EXTDEL_MAX) },
+	{ READ_BASE | N_OE | N_CS | LAST,
+		{   1,   1,   1,   1,   1,   1,   1 }, 0, 0, 0 },
+	{ EOF_UPM_SETTINGS,
+	  /* min total cycle time - includes turnaround and ALE cycle */
+		{ 600, 383, 240, 180, 120, 100,  80 }, 2, 0, O_MIN_CYCLE_TIME },
+};
+
+static const struct upm_setting cfUpmWriteSingle[] = {
+	{ WRITE_BASE | N_WE,
+	  /* t1 - ADDR setup time */
+		{  70,  50,  30,  30,  25,  15,  10 }, 0, 0, (OA_CPUOUT_DELTA |
+							      OA_EXTDEL_MAX) },
+	{ WRITE_BASE | N_WE_H1,
+		{   0,   0,   0,   0,   0,   0,   0 }, 0, 0, O_HALF_CYCLE },
+	{ WRITE_BASE,
+	  /* t2 - WE0 time */
+		{ 290, 290, 290,  80,  70,  65,  55 }, 0, 1, OA_CPUOUT_DELTA },
+	{ WRITE_BASE | WAEN,
+		{   1,   1,   1,   1,   1,   0,   0 }, 0, 0, 0 },
+	{ WRITE_BASE | N_WE,
+	  /* t9 - ADDR hold time */
+		{  20,  15,  10,  10,  10,  10,  10 }, 0, 0, (OA_CPUOUT_DELTA |
+							      OD_EXTDEL_MIN) },
+	{ WRITE_BASE | N_WE | N_CS_H2,
+		{   0,   0,   0,   0,   0,   0,   0 }, 0, 0, O_HALF_CYCLE },
+	{ WRITE_BASE | N_WE | N_CS,
+	  /* t4 - DATA hold time */
+		{  30,  20,  15,  10,  10,  10,  10 }, 0, 1, O_MINUS_PREV },
+	{ ANOTHER_TIMING,
+	  /* t2i -IOWR recovery time */
+		{   0,   0,   0,  70,  25,  25,  20 }, 1, 0, 0 },
+	{ ANOTHER_TIMING,
+	  /* CS 0 -> 1 MAX */
+		{   0,   0,   0,   0,   0,   0,   0 }, 0, 0, (OA_CPUOUT_DELTA |
+							      OA_EXTDEL_MAX) },
+	{ WRITE_BASE | N_WE | N_CS | UTA | LAST,
+		{   1,   1,   1,   1,   1,   1,   1 }, 0, 0, 0 },
+	/* min total cycle time - includes ALE cycle */
+	{ EOF_UPM_SETTINGS,
+		{ 600, 383, 240, 180, 120, 100,  80 }, 1, 0, O_MIN_CYCLE_TIME },
+};
+
+static u8 rbppc_cf_check_status(struct ata_port *ap) {
+	u8 val = ioread8(ap->ioaddr.status_addr);
+	if (val == 0xF9)
+		val = 0x7F;
+	return val;
+}
+
+static u8 rbppc_cf_check_altstatus(struct ata_port *ap) {
+	u8 val = ioread8(ap->ioaddr.altstatus_addr);
+	if (val == 0xF9)
+		val = 0x7F;
+	return val;
+}
+
+static void rbppc_cf_dummy_noret(struct ata_port *ap) { }
+static int rbppc_cf_dummy_ret0(struct ata_port *ap) { return 0; }
+
+static int ps2clk(int ps, unsigned clk_time_ps) {
+	int psMaxOver;
+	if (ps <= 0) return 0;
+
+	/* round down if <= 2% over clk border, but no more than 1/4 clk cycle */
+	psMaxOver = ps * 2 / 100;
+	if (4 * psMaxOver > clk_time_ps) {
+		psMaxOver = clk_time_ps / 4;
+	}
+	return (ps + clk_time_ps - 1 - psMaxOver) / clk_time_ps;
+}
+
+static int upm_gen_ps_table(const struct upm_setting *upm,
+			    int mode, struct rbppc_cf_info *info,
+			    int *psFinal) {
+	int uidx;
+	int lastUpmValIdx = 0;
+	int group_start_idx = -1;
+	int group_left_num = -1;
+	int clk_time_ps = info->clk_time_ps;
+
+	for (uidx = 0; upm[uidx].value != EOF_UPM_SETTINGS; ++uidx) {
+		const struct upm_setting *us = upm + uidx;
+		unsigned opt = us->options;
+		int ps = us->ns[mode] * 1000 - us->clk_minus * clk_time_ps;
+
+		if (opt & OA_CPUIN_MIN) ps += info->lb_timings[LBT_CPUIN_MIN];
+		if (opt & OD_CPUOUT_MIN) ps -= info->lb_timings[LBT_CPUOUT_MIN];
+		if (opt & OA_CPUOUT_MAX) ps += info->lb_timings[LBT_CPUOUT_MAX];
+		if (opt & OD_EXTDEL_MIN) ps -= info->lb_timings[LBT_EXTDEL_MIN];
+		if (opt & OA_EXTDEL_MAX) ps += info->lb_timings[LBT_EXTDEL_MAX];
+
+		if (us->value == ANOTHER_TIMING) {
+			/* use longest timing from alternatives */
+			if (psFinal[lastUpmValIdx] < ps) {
+				psFinal[lastUpmValIdx] = ps;
+			}
+			ps = 0;
+		}
+		else {
+			if (us->group_size) {
+				group_start_idx = uidx;
+				group_left_num = us->group_size;
+			}
+			else if (group_left_num > 0) {
+				/* group time is divided on all group members */
+				int clk = ps2clk(ps, clk_time_ps);
+				psFinal[group_start_idx] -= clk * clk_time_ps;
+				--group_left_num;
+			}
+			if ((opt & O_MINUS_PREV) && lastUpmValIdx > 0) {
+				int clk = ps2clk(psFinal[lastUpmValIdx],
+						 clk_time_ps);
+				ps -= clk * clk_time_ps;
+			}
+			lastUpmValIdx = uidx;
+		}
+		psFinal[uidx] = ps;
+	}
+	return uidx;
+}
+
+static int free_half(int ps, int clk, int clk_time_ps) {
+    if (clk < 2) return 0;
+    return (clk * clk_time_ps - ps) * 2 >= clk_time_ps;
+}
+
+static void upm_gen_clk_table(const struct upm_setting *upm,
+			      int mode, int clk_time_ps,
+			      int max_uidx, const int *psFinal, int *clkFinal) {
+	int clk_cycle_time;
+	int clk_total;
+	int uidx;
+
+	/* convert picoseconds to clocks */
+	clk_total = 0;
+	for (uidx = 0; uidx < max_uidx; ++uidx) {
+		int clk = ps2clk(psFinal[uidx], clk_time_ps);
+		clkFinal[uidx] = clk;
+		clk_total += clk;
+	}
+
+	/* check possibility of half cycle usage */
+	for (uidx = 1; uidx < max_uidx - 1; ++uidx) {
+		if ((upm[uidx].options & O_HALF_CYCLE) &&
+		    free_half(psFinal[uidx - 1], clkFinal[uidx - 1],
+			      clk_time_ps) &&
+		    free_half(psFinal[uidx + 1], clkFinal[uidx + 1],
+			      clk_time_ps)) {
+			++clkFinal[uidx];
+			--clkFinal[uidx - 1];
+			--clkFinal[uidx + 1];
+		}
+	}
+
+	if ((upm[max_uidx].options & O_MIN_CYCLE_TIME) == 0) return;
+
+	/* check cycle time, adjust timings if needed */
+	clk_cycle_time = (ps2clk(upm[max_uidx].ns[mode] * 1000, clk_time_ps) -
+			  upm[max_uidx].clk_minus);
+	uidx = 0;
+	while (clk_total < clk_cycle_time) {
+		/* extend all timings in round-robin to match cycle time */
+		if (clkFinal[uidx]) {
+#if DEBUG_UPM
+			printk(KERN_INFO "extending %u by 1 clk\n", uidx);
+#endif
+			++clkFinal[uidx];
+			++clk_total;
+		}
+		++uidx;
+		if (uidx == max_uidx) uidx = 0;
+	}
+}
+
+static void add_data_val(unsigned val, int *clkLeft, int maxClk,
+			unsigned *data, int *dataIdx) {
+	if (*clkLeft == 0) return;
+
+	if (maxClk == 0 && *clkLeft >= LOOP_SIZE * 2) {
+		int times;
+		int times1;
+		int times2;
+
+		times = *clkLeft / LOOP_SIZE;
+		if (times > REDO_MAX_MULT * 2) times = REDO_MAX_MULT * 2;
+		times1 = times / 2;
+		times2 = times - times1;
+
+		val |= LOOP;
+		data[*dataIdx] = val | REDO_VAL(times1);
+		++(*dataIdx);
+		data[*dataIdx] = val | REDO_VAL(times2);
+		++(*dataIdx);
+
+		*clkLeft -= times * LOOP_SIZE;
+		return;
+	}
+
+	if (maxClk < 1 || maxClk > REDO_MAX_MULT) maxClk = REDO_MAX_MULT;
+	if (*clkLeft < maxClk) maxClk = *clkLeft;
+
+	*clkLeft -= maxClk;
+	val |= REDO_VAL(maxClk);
+
+	data[*dataIdx] = val;
+	++(*dataIdx);
+}
+
+static int upm_gen_final_data(const struct upm_setting *upm,
+			       int max_uidx, int *clkFinal, unsigned *data) {
+	int dataIdx;
+	int uidx;
+
+	dataIdx = 0;
+	for (uidx = 0; uidx < max_uidx; ++uidx) {
+		int clk = clkFinal[uidx];
+		while (clk > 0) {
+			add_data_val(upm[uidx].value, &clk, 0,
+				     data, &dataIdx);
+		}
+	}
+	return dataIdx;
+}
+
+static int conv_upm_table(const struct upm_setting *upm,
+			  int mode, struct rbppc_cf_info *info,
+			  unsigned *data) {
+#if DEBUG_UPM
+	int uidx;
+#endif
+	int psFinal[32];
+	int clkFinal[32];
+	int max_uidx;
+	int data_len;
+
+	max_uidx = upm_gen_ps_table(upm, mode, info, psFinal);
+
+	upm_gen_clk_table(upm, mode, info->clk_time_ps, max_uidx,
+			  psFinal, clkFinal);
+
+#if DEBUG_UPM
+	/* dump out debug info */
+	for (uidx = 0; uidx < max_uidx; ++uidx) {
+		if (clkFinal[uidx]) {
+			printk(KERN_INFO "idx %d val %08x clk %d ps %d\n",
+				uidx, upm[uidx].value,
+				clkFinal[uidx], psFinal[uidx]);
+		}
+	}
+#endif
+
+	data_len = upm_gen_final_data(upm, max_uidx, clkFinal, data);
+
+#if DEBUG_UPM
+	for (uidx = 0; uidx < data_len; ++uidx) {
+		printk(KERN_INFO "cf UPM x result: idx %d val %08x\n",
+		       uidx, data[uidx]);
+	}
+#endif
+	return 0;
+}
+
+static int gen_upm_data(int mode, struct rbppc_cf_info *info, unsigned *data) {
+	int i;
+
+	for (i = 0; i < UPM_DATA_SIZE; ++i) {
+		data[i] = EMPTY;
+	}
+
+	if (conv_upm_table(cfUpmReadSingle, mode, info, data + UPM_READ_SINGLE_OFFSET)) {
+		return -1;
+	}
+	if (conv_upm_table(cfUpmWriteSingle, mode, info, data + UPM_WRITE_SINGLE_OFFSET)) {
+		return -1;
+	}
+	return 0;
+}
+
+static void rbppc_cf_program_upm(void *upmMemAddr, volatile void *lbcfg_mxmr, volatile void *lbcfg_mdr, const unsigned *upmData, unsigned offset, unsigned len) {
+	unsigned i;
+	unsigned mxmr;
+
+	mxmr = in_be32(lbcfg_mxmr);
+	mxmr &= ~(MxMR_OP_MASK | MxMR_MAD_MASK);
+	mxmr |= (MxMR_OP_WRITE | offset);
+	out_be32(lbcfg_mxmr, mxmr);
+	in_be32(lbcfg_mxmr); /* flush MxMR write */
+
+	for (i = 0; i < len; ++i) {
+		int to;
+		unsigned data = upmData[i + offset];
+		out_be32(lbcfg_mdr, data);
+		in_be32(lbcfg_mdr); /* flush MDR write */
+
+		iowrite8(1, upmMemAddr); /* dummy write to any CF addr */
+
+		/* wait for dummy write to complete */
+		for (to = 10000; to >= 0; --to) {
+			mxmr = in_be32(lbcfg_mxmr);
+			if (((mxmr ^ (i + 1)) & MxMR_MAD_MASK) == 0) {
+				break;
+			}
+			if (to == 0) {
+				printk(KERN_ERR "rbppc_cf_program_upm: UPMx program error at 0x%x: Timeout\n", i);
+			}
+		}
+	}
+	mxmr &= ~(MxMR_OP_MASK | MxMR_RLF_MASK | MxMR_WLF_MASK);
+	mxmr |= (MxMR_OP_NORMAL | (LOOP_SIZE << MxMR_RLF_SHIFT) | (LOOP_SIZE << MxMR_WLF_SHIFT));
+	out_be32(lbcfg_mxmr, mxmr);
+}
+
+static int rbppc_cf_update_piomode(struct ata_port *ap, int mode) {
+	struct rbppc_cf_info *info = (struct rbppc_cf_info *)ap->host->private_data;
+	void *lbcfgBase;
+	unsigned upmData[UPM_DATA_SIZE];
+
+	if (gen_upm_data(mode, info, upmData)) {
+		return -1;
+	}
+
+	lbcfgBase = ioremap_nocache(info->lbcfg_addr, IMMR_LBCFG_SIZE);
+
+	rbppc_cf_program_upm(ap->ioaddr.cmd_addr, ((char *)lbcfgBase) + LOCAL_BUS_MCMR, ((char *)lbcfgBase) + LOCAL_BUS_MDR, upmData, 0, UPM_DATA_SIZE);
+	iounmap(lbcfgBase);
+	return 0;
+}
+
+static void rbppc_cf_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+	struct rbppc_cf_info *info = (struct rbppc_cf_info *)ap->host->private_data;
+	int mode = adev->pio_mode - XFER_PIO_0;
+
+	DPRINTK("rbppc_cf_set_piomode: PIO %d\n", mode);
+	if (mode < 0) mode = 0;
+	if (mode > 6) mode = 6;
+
+	if (info->cur_mode < 0 || info->cur_mode > mode) {
+		if (rbppc_cf_update_piomode(ap, mode) == 0) {
+			printk(KERN_INFO "rbppc_cf_set_piomode: PIO mode changed to %d\n", mode);
+			info->cur_mode = mode;
+		}
+	}
+}
+
+static struct scsi_host_template rbppc_cf_sht = {
+	ATA_BASE_SHT(DRV_NAME),
+};
+
+static struct ata_port_operations rbppc_cf_port_ops = {
+	.inherits		= &ata_bmdma_port_ops,
+
+	.sff_check_status	= rbppc_cf_check_status,
+	.sff_check_altstatus	= rbppc_cf_check_altstatus,
+
+	.set_piomode		= rbppc_cf_set_piomode,
+
+	.port_start		= rbppc_cf_dummy_ret0,
+
+	.sff_irq_clear		= rbppc_cf_dummy_noret,
+};
+
+static int rbppc_cf_init_info(struct of_device *pdev, struct rbppc_cf_info *info) {
+	struct device_node *np;
+	struct resource res;
+	const u32 *u32ptr;
+	void *lbcfgBase;
+	void *lbcfg_lcrr;
+	unsigned lbc_clk_khz;
+	unsigned lbc_extra_divider = 1;
+	unsigned ccb_freq_hz;
+	unsigned lb_div;
+
+	u32ptr = of_get_property(pdev->node, "lbc_extra_divider", NULL);
+	if (u32ptr && *u32ptr) {
+		lbc_extra_divider = *u32ptr;
+#if DEBUG_UPM
+		printk(KERN_INFO "rbppc_cf_init_info: LBC extra divider %u\n",
+		       lbc_extra_divider);
+#endif
+	}
+
+	np = of_find_node_by_type(NULL, "serial");
+	if (!np) {
+		printk(KERN_ERR "rbppc_cf_init_info: No serial node found\n");
+		return -1;
+	}
+	u32ptr = of_get_property(np, "clock-frequency", NULL);
+	if (u32ptr == 0 || *u32ptr == 0) {
+		printk(KERN_ERR "rbppc_cf_init_info: Serial does not have clock-frequency\n");
+		of_node_put(np);
+		return -1;
+	}
+	ccb_freq_hz = *u32ptr;
+	of_node_put(np);
+
+	np = of_find_node_by_type(NULL, "soc");
+	if (!np) {
+		printk(KERN_ERR "rbppc_cf_init_info: No soc node found\n");
+		return -1;
+	}
+	if (of_address_to_resource(np, 0, &res)) {
+		printk(KERN_ERR "rbppc_cf_init_info: soc does not have resource\n");
+		of_node_put(np);
+		return -1;
+	}
+	info->lbcfg_addr = res.start + IMMR_LBCFG_OFFSET;
+	of_node_put(np);
+
+	lbcfgBase = ioremap_nocache(info->lbcfg_addr, IMMR_LBCFG_SIZE);
+	lbcfg_lcrr = ((char*)lbcfgBase) + LOCAL_BUS_LCRR;
+	lb_div = (in_be32(lbcfg_lcrr) & LCRR_CLKDIV_MASK) * lbc_extra_divider;
+	iounmap(lbcfgBase);
+
+	lbc_clk_khz = ccb_freq_hz / (1000 * lb_div);
+	info->clk_time_ps = 1000000000 / lbc_clk_khz;
+	printk(KERN_INFO "rbppc_cf_init_info: Using Local-Bus clock %u kHz %u ps\n",
+	       lbc_clk_khz, info->clk_time_ps);
+
+	u32ptr = of_get_property(pdev->node, "lb-timings", NULL);
+	if (u32ptr) {
+		memcpy(info->lb_timings, u32ptr, LBT_SIZE * sizeof(*u32ptr));
+#if DEBUG_UPM
+		printk(KERN_INFO "rbppc_cf_init_info: Got LB timings <%u %u %u %u %u>\n",
+		       u32ptr[0], u32ptr[1], u32ptr[2], u32ptr[3], u32ptr[4]);
+#endif
+	}
+	info->cur_mode = -1;
+	return 0;
+}
+
+static int rbppc_cf_probe(struct of_device *pdev,
+			  const struct of_device_id *match)
+{
+	struct ata_host *host;
+	struct ata_port *ap;
+	struct rbppc_cf_info *info = NULL;
+	struct resource res;
+	void *baddr;
+	const u32 *u32ptr;
+	int irq_level = 0;
+	int err = -ENOMEM;
+
+	printk(KERN_INFO "rbppc_cf_probe: MikroTik RouterBOARD 600 series Compact Flash PATA driver, version " DRV_VERSION "\n");
+
+	if (rbinfo == NULL) {
+		info = kmalloc(sizeof(*info), GFP_KERNEL);
+		if (info == NULL) {
+			printk(KERN_ERR "rbppc_cf_probe: Out of memory\n");
+			goto err_info;
+		}
+		memset(info, 0, sizeof(*info));
+
+		if (rbppc_cf_init_info(pdev, info)) {
+			goto err_info;
+		}
+		rbinfo = info;
+	}
+
+	u32ptr = of_get_property(pdev->node, "interrupt-at-level", NULL);
+	if (u32ptr) {
+		irq_level = *u32ptr;
+		printk(KERN_INFO "rbppc_cf_probe: IRQ level %u\n", irq_level);
+	}
+
+	if (of_address_to_resource(pdev->node, 0, &res)) {
+	    printk(KERN_ERR "rbppc_cf_probe: No reg property found\n");
+	    goto err_info;
+	}
+
+	host = ata_host_alloc(&pdev->dev, 1);
+	if (!host)
+	    goto err_info;
+
+	baddr = localbus_map(res.start, res.end - res.start + 1);
+	host->iomap = baddr;
+	host->private_data = rbinfo;
+
+	ap = host->ports[0];
+	ap->ops = &rbppc_cf_port_ops;
+	ap->pio_mask = 0x7F;	/* PIO modes 0-6 */
+	ap->flags = ATA_FLAG_NO_LEGACY;
+	ap->mwdma_mask = 0;
+
+	ap->ioaddr.cmd_addr = baddr;
+	ata_sff_std_ports(&ap->ioaddr);
+	ap->ioaddr.ctl_addr = ap->ioaddr.cmd_addr + 14;
+	ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
+	ap->ioaddr.bmdma_addr = 0;
+
+	err = ata_host_activate(
+		host,
+		irq_of_parse_and_map(pdev->node, 0), ata_sff_interrupt,
+		irq_level ? IRQF_TRIGGER_HIGH : IRQF_TRIGGER_LOW,
+		&rbppc_cf_sht);
+	if (!err) return 0;
+
+	localbus_unmap(baddr);
+err_info:
+	if (info) {
+		kfree(info);
+		rbinfo = NULL;
+	}
+	return err;
+}
+
+static int rbppc_cf_remove(struct of_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct ata_host *host = dev_get_drvdata(dev);
+
+	if (host == NULL) return -1;
+
+	ata_host_detach(host);
+	return 0;
+}
+
+static struct of_device_id rbppc_cf_ids[] = {
+	{ .name = "cf", },
+	{ },
+};
+
+static struct of_platform_driver rbppc_cf_driver = {
+	.name = "cf",
+	.probe = rbppc_cf_probe,
+	.remove = rbppc_cf_remove,
+	.match_table = rbppc_cf_ids,
+	.driver	= {
+		.name = "rbppc-cf",
+		.owner = THIS_MODULE,
+	},
+};
+
+static int __init rbppc_init(void)
+{
+	return of_register_platform_driver(&rbppc_cf_driver);
+}
+
+static void __exit rbppc_exit(void)
+{
+	of_unregister_platform_driver(&rbppc_cf_driver);
+}
+
+MODULE_AUTHOR("Mikrotikls SIA");
+MODULE_AUTHOR("Noah Fontes");
+MODULE_DESCRIPTION("MikroTik RouterBOARD 600 series Compact Flash PATA driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(rbppc_init);
+module_exit(rbppc_exit);
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -386,6 +386,13 @@ config MTD_NAND_PLATFORM
 	  devices. You will need to provide platform-specific functions
 	  via platform_data.
 
+config MTD_NAND_RB_PPC
+	tristate "MikroTik RB600 NAND support"
+	depends on MTD_NAND && MTD_PARTITIONS && RB_PPC
+	help
+	  This option enables support for the NAND device on MikroTik
+	  RouterBOARD 600 series boards.
+
 config MTD_ALAUDA
 	tristate "MTD driver for Olympus MAUSB-10 and Fujifilm DPC-R1"
 	depends on MTD_NAND && USB
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_MTD_NAND_BASLER_EXCITE)	+= 
 obj-$(CONFIG_MTD_NAND_PXA3xx)		+= pxa3xx_nand.o
 obj-$(CONFIG_MTD_NAND_TMIO)		+= tmio_nand.o
 obj-$(CONFIG_MTD_NAND_PLATFORM)		+= plat_nand.o
+obj-$(CONFIG_MTD_NAND_RB_PPC)		+= rbppc_nand.o
 obj-$(CONFIG_MTD_ALAUDA)		+= alauda.o
 obj-$(CONFIG_MTD_NAND_PASEMI)		+= pasemi_nand.o
 obj-$(CONFIG_MTD_NAND_ORION)		+= orion_nand.o
--- /dev/null
+++ b/drivers/mtd/nand/rbppc_nand.c
@@ -0,0 +1,252 @@
+/*
+ * Copyright (C) 2008-2009 Noah Fontes <nfontes@transtruct.org>
+ * Copyright (C) 2009 Michael Guntsche <mike@it-loops.com>
+ * Copyright (C) Mikrotik 2007
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/of_platform.h>
+#include <asm/of_platform.h>
+#include <asm/of_device.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+
+#define DRV_NAME	"rbppc_nand"
+#define DRV_VERSION	"0.0.2"
+
+static struct mtd_info rmtd;
+static struct nand_chip rnand;
+
+struct rbppc_nand_info {
+	void *gpi;
+	void *gpo;
+	void *localbus;
+
+	unsigned gpio_rdy;
+	unsigned gpio_nce;
+	unsigned gpio_cle;
+	unsigned gpio_ale;
+	unsigned gpio_ctrls;
+};
+
+/* We must use the OOB layout from yaffs 1 if we want this to be recognized
+ * properly. Borrowed from the OpenWRT patches for the RB532.
+ *
+ * See <https://dev.openwrt.org/browser/trunk/target/linux/rb532/
+ * patches-2.6.28/025-rb532_nand_fixup.patch> for more details.
+ */
+static struct nand_ecclayout rbppc_nand_oob_16 = {
+	.eccbytes = 6,
+	.eccpos = { 8, 9, 10, 13, 14, 15 },
+	.oobavail = 9,
+	.oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
+};
+
+static struct mtd_partition rbppc_nand_partition_info[] = {
+	{
+		name: "RouterBOARD NAND Boot",
+		offset: 0,
+		size: 4 * 1024 * 1024,
+	},
+	{
+		name: "RouterBOARD NAND Main",
+		offset: MTDPART_OFS_NXTBLK,
+		size: MTDPART_SIZ_FULL,
+	},
+};
+
+static int rbppc_nand_dev_ready(struct mtd_info *mtd) {
+	struct nand_chip *chip = mtd->priv;
+	struct rbppc_nand_info *priv = chip->priv;
+
+	return in_be32(priv->gpi) & priv->gpio_rdy;
+}
+
+static void rbppc_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) {
+	struct nand_chip *chip = mtd->priv;
+	struct rbppc_nand_info *priv = chip->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		unsigned val = in_be32(priv->gpo);
+		if (!(val & priv->gpio_nce)) {
+			/* make sure Local Bus has done NAND operations */
+			readb(priv->localbus);
+		}
+
+		if (ctrl & NAND_CLE) {
+			val |= priv->gpio_cle;
+		} else {
+			val &= ~priv->gpio_cle;
+		}
+		if (ctrl & NAND_ALE) {
+			val |= priv->gpio_ale;
+		} else {
+			val &= ~priv->gpio_ale;
+		}
+		if (!(ctrl & NAND_NCE)) {
+			val |= priv->gpio_nce;
+		} else {
+			val &= ~priv->gpio_nce;
+		}
+		out_be32(priv->gpo, val);
+
+		/* make sure GPIO output has changed */
+		val ^= in_be32(priv->gpo);
+		if (val & priv->gpio_ctrls) {
+			printk(KERN_ERR "rbppc_nand_hwcontrol: NAND GPO change failed 0x%08x\n", val);
+		}
+	}
+
+	if (cmd != NAND_CMD_NONE) writeb(cmd, chip->IO_ADDR_W);
+}
+
+static void rbppc_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+	struct nand_chip *chip = mtd->priv;
+	memcpy(buf, chip->IO_ADDR_R, len);
+}
+
+static unsigned init_ok = 0;
+
+static int rbppc_nand_probe(struct of_device *pdev,
+			    const struct of_device_id *match)
+{
+	struct device_node *gpio;
+	struct device_node *nnand;
+	struct resource res;
+	struct rbppc_nand_info *info;
+	void *baddr;
+	const unsigned *rdy, *nce, *cle, *ale;
+
+	printk(KERN_INFO "rbppc_nand_probe: MikroTik RouterBOARD 600 series NAND driver, version " DRV_VERSION "\n");
+
+	info = kmalloc(sizeof(*info), GFP_KERNEL);
+
+	rdy = of_get_property(pdev->node, "rdy", NULL);
+	nce = of_get_property(pdev->node, "nce", NULL);
+	cle = of_get_property(pdev->node, "cle", NULL);
+	ale = of_get_property(pdev->node, "ale", NULL);
+
+	if (!rdy || !nce || !cle || !ale) {
+		printk(KERN_ERR "rbppc_nand_probe: GPIO properties are missing\n");
+		goto err;
+	}
+	if (rdy[0] != nce[0] || rdy[0] != cle[0] || rdy[0] != ale[0]) {
+		printk(KERN_ERR "rbppc_nand_probe: Different GPIOs are not supported\n");
+		goto err;
+	}
+
+	gpio = of_find_node_by_phandle(rdy[0]);
+	if (!gpio) {
+		printk(KERN_ERR "rbppc_nand_probe: No GPIO<%x> node found\n", *rdy);
+		goto err;
+	}
+	if (of_address_to_resource(gpio, 0, &res)) {
+		printk(KERN_ERR "rbppc_nand_probe: No reg property in GPIO found\n");
+		goto err;
+	}
+	info->gpo = ioremap_nocache(res.start, res.end - res.start + 1);
+
+	if (!of_address_to_resource(gpio, 1, &res)) {
+		info->gpi = ioremap_nocache(res.start, res.end - res.start + 1);
+	} else {
+		info->gpi = info->gpo;
+	}
+	of_node_put(gpio);
+
+	info->gpio_rdy = 1 << (31 - rdy[1]);
+	info->gpio_nce = 1 << (31 - nce[1]);
+	info->gpio_cle = 1 << (31 - cle[1]);
+	info->gpio_ale = 1 << (31 - ale[1]);
+	info->gpio_ctrls = info->gpio_nce | info->gpio_cle | info->gpio_ale;
+
+	nnand = of_find_node_by_name(NULL, "nnand");
+	if (!nnand) {
+		printk("rbppc_nand_probe: No nNAND found\n");
+		goto err;
+	}
+	if (of_address_to_resource(nnand, 0, &res)) {
+		printk("rbppc_nand_probe: No reg property in nNAND found\n");
+		goto err;
+	}
+	of_node_put(nnand);
+	info->localbus = ioremap_nocache(res.start, res.end - res.start + 1);
+
+	if (of_address_to_resource(pdev->node, 0, &res)) {
+	    printk("rbppc_nand_probe: No reg property found\n");
+	    goto err;
+	}
+	baddr = ioremap_nocache(res.start, res.end - res.start + 1);
+
+	memset(&rnand, 0, sizeof(rnand));
+	rnand.cmd_ctrl = rbppc_nand_cmd_ctrl;
+	rnand.dev_ready = rbppc_nand_dev_ready;
+	rnand.read_buf = rbppc_nand_read_buf;
+	rnand.IO_ADDR_W = baddr;
+	rnand.IO_ADDR_R = baddr;
+	rnand.priv = info;
+
+	memset(&rmtd, 0, sizeof(rmtd));
+	rnand.ecc.mode = NAND_ECC_SOFT;
+	rnand.ecc.layout = &rbppc_nand_oob_16;
+	rnand.chip_delay = 25;
+	rnand.options |= NAND_NO_AUTOINCR;
+	rmtd.priv = &rnand;
+	rmtd.owner = THIS_MODULE;
+
+	if (nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1) && nand_scan(&rmtd, 1)) {
+		printk(KERN_ERR "rbppc_nand_probe: RouterBOARD NAND device not found\n");
+		return -ENXIO;
+	}
+
+	add_mtd_partitions(&rmtd, rbppc_nand_partition_info, 2);
+	init_ok = 1;
+	return 0;
+
+err:
+	kfree(info);
+	return -1;
+}
+
+static struct of_device_id rbppc_nand_ids[] = {
+	{ .name = "nand", },
+	{ },
+};
+
+static struct of_platform_driver rbppc_nand_driver = {
+	.name   = "nand",
+	.probe	= rbppc_nand_probe,
+	.match_table = rbppc_nand_ids,
+	.driver	= {
+		.name = "rbppc-nand",
+		.owner = THIS_MODULE,
+	},
+};
+
+static int __init rbppc_nand_init(void)
+{
+	return of_register_platform_driver(&rbppc_nand_driver);
+}
+
+static void __exit rbppc_nand_exit(void)
+{
+	of_unregister_platform_driver(&rbppc_nand_driver);
+}
+
+MODULE_AUTHOR("Mikrotikls SIA");
+MODULE_AUTHOR("Noah Fontes");
+MODULE_AUTHOR("Michael Guntsche");
+MODULE_DESCRIPTION("MikroTik RouterBOARD 600 series NAND driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(rbppc_nand_init);
+module_exit(rbppc_nand_exit);