path: root/target/linux/atheros/patches-3.18/100-board.patch

--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -96,6 +96,19 @@ config AR7
 	  Support for the Texas Instruments AR7 System-on-a-Chip
 	  family: TNETD7100, 7200 and 7300.
 
+config ATH25
+	bool "Atheros 231x/531x SoC support"
+	select CEVT_R4K
+	select CSRC_R4K
+	select DMA_NONCOHERENT
+	select IRQ_CPU
+	select SYS_HAS_CPU_MIPS32_R1
+	select SYS_SUPPORTS_BIG_ENDIAN
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select ARCH_REQUIRE_GPIOLIB
+	help
+	  Support for AR231x and AR531x based boards
+
 config ATH79
 	bool "Atheros AR71XX/AR724X/AR913X based boards"
 	select ARCH_REQUIRE_GPIOLIB
@@ -834,6 +847,7 @@ config MIPS_PARAVIRT
 
 endchoice
 
+source "arch/mips/ath25/Kconfig"
 source "arch/mips/alchemy/Kconfig"
 source "arch/mips/ath79/Kconfig"
 source "arch/mips/bcm47xx/Kconfig"
--- a/arch/mips/Kbuild.platforms
+++ b/arch/mips/Kbuild.platforms
@@ -2,6 +2,7 @@
 
 platforms += alchemy
 platforms += ar7
+platforms += ath25
 platforms += ath79
 platforms += bcm47xx
 platforms += bcm63xx
--- /dev/null
+++ b/arch/mips/ath25/Platform
@@ -0,0 +1,6 @@
+#
+# Atheros AR531X/AR231X WiSoC
+#
+platform-$(CONFIG_ATH25)	+= ath25/
+cflags-$(CONFIG_ATH25)		+= -I$(srctree)/arch/mips/include/asm/mach-ath25
+load-$(CONFIG_ATH25)		+= 0xffffffff80041000
--- /dev/null
+++ b/arch/mips/ath25/Kconfig
@@ -0,0 +1,9 @@
+config SOC_AR5312
+	bool "Atheros 5312/2312+ support"
+	depends on ATH25
+	default y
+
+config SOC_AR2315
+	bool "Atheros 2315+ support"
+	depends on ATH25
+	default y
--- /dev/null
+++ b/arch/mips/ath25/Makefile
@@ -0,0 +1,13 @@
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2006 FON Technology, SL.
+# Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+# Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
+#
+
+obj-y += board.o prom.o devices.o
+obj-$(CONFIG_SOC_AR5312) += ar5312.o
+obj-$(CONFIG_SOC_AR2315) += ar2315.o
--- /dev/null
+++ b/arch/mips/ath25/board.c
@@ -0,0 +1,234 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
+ */
+
+#include <generated/autoconf.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include <linux/etherdevice.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <asm/irq_cpu.h>
+#include <asm/reboot.h>
+#include <asm/bootinfo.h>
+#include <asm/time.h>
+
+#include <ath25_platform.h>
+#include "devices.h"
+#include "ar5312.h"
+#include "ar2315.h"
+
+void (*ath25_irq_dispatch)(void);
+
+static inline bool check_radio_magic(u8 *addr)
+{
+	addr += 0x7a; /* offset for flash magic */
+	return (addr[0] == 0x5a) && (addr[1] == 0xa5);
+}
+
+static inline bool check_notempty(u8 *addr)
+{
+	return *(u32 *)addr != 0xffffffff;
+}
+
+static inline bool check_board_data(u8 *flash_limit, u8 *addr, bool broken)
+{
+	/* config magic found */
+	if (*((u32 *)addr) == ATH25_BD_MAGIC)
+		return true;
+
+	if (!broken)
+		return false;
+
+	if (check_radio_magic(addr + 0xf8))
+		ath25_board.radio = addr + 0xf8;
+	if ((addr < flash_limit + 0x10000) &&
+	    check_radio_magic(addr + 0x10000))
+		ath25_board.radio = addr + 0x10000;
+
+	if (ath25_board.radio) {
+		/* broken board data detected, use radio data to find the
+		 * offset, user will fix this */
+		return true;
+	}
+
+	return false;
+}
+
+static u8 * __init find_board_config(u8 *flash_limit, bool broken)
+{
+	u8 *addr;
+	u8 *begin = flash_limit - 0x1000;
+	u8 *end = flash_limit - 0x30000;
+
+	for (addr = begin; addr >= end; addr -= 0x1000)
+		if (check_board_data(flash_limit, addr, broken))
+			return addr;
+
+	return NULL;
+}
+
+static u8 * __init find_radio_config(u8 *flash_limit, u8 *bcfg)
+{
+	u8 *rcfg, *begin, *end;
+
+	/*
+	 * Now find the start of Radio Configuration data, using heuristics:
+	 * Search forward from Board Configuration data by 0x1000 bytes
+	 * at a time until we find non-0xffffffff.
+	 */
+	begin = bcfg + 0x1000;
+	end = flash_limit;
+	for (rcfg = begin; rcfg < end; rcfg += 0x1000)
+		if (check_notempty(rcfg) && check_radio_magic(rcfg))
+			return rcfg;
+
+	/* AR2316 relocates radio config to new location */
+	begin = bcfg + 0xf8;
+	end = flash_limit - 0x1000 + 0xf8;
+	for (rcfg = begin; rcfg < end; rcfg += 0x1000)
+		if (check_notempty(rcfg) && check_radio_magic(rcfg))
+			return rcfg;
+
+	pr_warn("WARNING: Could not find Radio Configuration data\n");
+
+	return NULL;
+}
+
+int __init ath25_find_config(u8 *flash_limit)
+{
+	struct ath25_boarddata *config;
+	unsigned int rcfg_size;
+	int broken_boarddata = 0;
+	u8 *bcfg, *rcfg;
+	u8 *board_data;
+	u8 *radio_data;
+	u8 *mac_addr;
+	u32 offset;
+
+	ath25_board.config = NULL;
+	ath25_board.radio = NULL;
+	/* Copy the board and radio data to RAM, because accessing the mapped
+	 * memory of the flash directly after booting is not safe */
+
+	/* Try to find valid board and radio data */
+	bcfg = find_board_config(flash_limit, false);
+
+	/* If that fails, try to at least find valid radio data */
+	if (!bcfg) {
+		bcfg = find_board_config(flash_limit, true);
+		broken_boarddata = 1;
+	}
+
+	if (!bcfg) {
+		pr_warn("WARNING: No board configuration data found!\n");
+		return -ENODEV;
+	}
+
+	board_data = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL);
+	ath25_board.config = (struct ath25_boarddata *)board_data;
+	memcpy(board_data, bcfg, 0x100);
+	if (broken_boarddata) {
+		pr_warn("WARNING: broken board data detected\n");
+		config = ath25_board.config;
+		if (is_zero_ether_addr(config->enet0_mac)) {
+			pr_info("Fixing up empty mac addresses\n");
+			config->reset_config_gpio = 0xffff;
+			config->sys_led_gpio = 0xffff;
+			random_ether_addr(config->wlan0_mac);
+			config->wlan0_mac[0] &= ~0x06;
+			random_ether_addr(config->enet0_mac);
+			random_ether_addr(config->enet1_mac);
+		}
+	}
+
+	/* Radio config starts 0x100 bytes after board config, regardless
+	 * of what the physical layout on the flash chip looks like */
+
+	if (ath25_board.radio)
+		rcfg = (u8 *)ath25_board.radio;
+	else
+		rcfg = find_radio_config(flash_limit, bcfg);
+
+	if (!rcfg)
+		return -ENODEV;
+
+	radio_data = board_data + 0x100 + ((rcfg - bcfg) & 0xfff);
+	ath25_board.radio = radio_data;
+	offset = radio_data - board_data;
+	pr_info("Radio config found at offset 0x%x (0x%x)\n", rcfg - bcfg,
+		offset);
+	rcfg_size = BOARD_CONFIG_BUFSZ - offset;
+	memcpy(radio_data, rcfg, rcfg_size);
+
+	mac_addr = &radio_data[0x1d * 2];
+	if (is_broadcast_ether_addr(mac_addr)) {
+		pr_info("Radio MAC is blank; using board-data\n");
+		ether_addr_copy(mac_addr, ath25_board.config->wlan0_mac);
+	}
+
+	return 0;
+}
+
+static void ath25_halt(void)
+{
+	local_irq_disable();
+	while (1)
+		;
+}
+
+void __init plat_mem_setup(void)
+{
+	_machine_halt = ath25_halt;
+	pm_power_off = ath25_halt;
+
+	if (is_ar5312())
+		ar5312_plat_mem_setup();
+	else
+		ar2315_plat_mem_setup();
+
+	/* Disable data watchpoints */
+	write_c0_watchlo0(0);
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+	ath25_irq_dispatch();
+}
+
+void __init plat_time_init(void)
+{
+	if (is_ar5312())
+		ar5312_plat_time_init();
+	else
+		ar2315_plat_time_init();
+}
+
+unsigned int __cpuinit get_c0_compare_int(void)
+{
+	return CP0_LEGACY_COMPARE_IRQ;
+}
+
+void __init arch_init_irq(void)
+{
+	clear_c0_status(ST0_IM);
+	mips_cpu_irq_init();
+
+	/* Initialize interrupt controllers */
+	if (is_ar5312())
+		ar5312_arch_init_irq();
+	else
+		ar2315_arch_init_irq();
+}
--- /dev/null
+++ b/arch/mips/ath25/prom.c
@@ -0,0 +1,26 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright MontaVista Software Inc
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ */
+
+/*
+ * Prom setup file for ar231x
+ */
+
+#include <linux/init.h>
+#include <asm/bootinfo.h>
+
+void __init prom_init(void)
+{
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/ath25_platform.h
@@ -0,0 +1,84 @@
+#ifndef __ASM_MACH_ATH25_PLATFORM_H
+#define __ASM_MACH_ATH25_PLATFORM_H
+
+#include <linux/etherdevice.h>
+
+/*
+ * This is board-specific data that is stored in a "fixed" location in flash.
+ * It is shared across operating systems, so it should not be changed lightly.
+ * The main reason we need it is in order to extract the ethernet MAC
+ * address(es).
+ */
+struct ath25_boarddata {
+	u32 magic;                   /* board data is valid */
+#define ATH25_BD_MAGIC 0x35333131    /* "5311", for all 531x/231x platforms */
+	u16 cksum;                   /* checksum (starting with BD_REV 2) */
+	u16 rev;                     /* revision of this struct */
+#define BD_REV 4
+	char board_name[64];         /* Name of board */
+	u16 major;                   /* Board major number */
+	u16 minor;                   /* Board minor number */
+	u32 flags;                   /* Board configuration */
+#define BD_ENET0        0x00000001   /* ENET0 is stuffed */
+#define BD_ENET1        0x00000002   /* ENET1 is stuffed */
+#define BD_UART1        0x00000004   /* UART1 is stuffed */
+#define BD_UART0        0x00000008   /* UART0 is stuffed (dma) */
+#define BD_RSTFACTORY   0x00000010   /* Reset factory defaults stuffed */
+#define BD_SYSLED       0x00000020   /* System LED stuffed */
+#define BD_EXTUARTCLK   0x00000040   /* External UART clock */
+#define BD_CPUFREQ      0x00000080   /* cpu freq is valid in nvram */
+#define BD_SYSFREQ      0x00000100   /* sys freq is set in nvram */
+#define BD_WLAN0        0x00000200   /* Enable WLAN0 */
+#define BD_MEMCAP       0x00000400   /* CAP SDRAM @ mem_cap for testing */
+#define BD_DISWATCHDOG  0x00000800   /* disable system watchdog */
+#define BD_WLAN1        0x00001000   /* Enable WLAN1 (ar5212) */
+#define BD_ISCASPER     0x00002000   /* FLAG for AR2312 */
+#define BD_WLAN0_2G_EN  0x00004000   /* FLAG for radio0_2G */
+#define BD_WLAN0_5G_EN  0x00008000   /* FLAG for radio0_2G */
+#define BD_WLAN1_2G_EN  0x00020000   /* FLAG for radio0_2G */
+#define BD_WLAN1_5G_EN  0x00040000   /* FLAG for radio0_2G */
+	u16 reset_config_gpio;       /* Reset factory GPIO pin */
+	u16 sys_led_gpio;            /* System LED GPIO pin */
+
+	u32 cpu_freq;                /* CPU core frequency in Hz */
+	u32 sys_freq;                /* System frequency in Hz */
+	u32 cnt_freq;                /* Calculated C0_COUNT frequency */
+
+	u8  wlan0_mac[ETH_ALEN];
+	u8  enet0_mac[ETH_ALEN];
+	u8  enet1_mac[ETH_ALEN];
+
+	u16 pci_id;                  /* Pseudo PCIID for common code */
+	u16 mem_cap;                 /* cap bank1 in MB */
+
+	/* version 3 */
+	u8  wlan1_mac[ETH_ALEN];     /* (ar5212) */
+};
+
+#define BOARD_CONFIG_BUFSZ		0x1000
+
+/*
+ * Platform device information for the Wireless MAC
+ */
+struct ar231x_board_config {
+	u16 devid;
+
+	/* board config data */
+	struct ath25_boarddata *config;
+
+	/* radio calibration data */
+	const char *radio;
+};
+
+/*
+ * Platform device information for the Ethernet MAC
+ */
+struct ar231x_eth {
+	void (*reset_set)(u32);
+	void (*reset_clear)(u32);
+	u32 reset_mac;
+	u32 reset_phy;
+	char *macaddr;
+};
+
+#endif /* __ASM_MACH_ATH25_PLATFORM_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/cpu-feature-overrides.h
@@ -0,0 +1,64 @@
+/*
+ *  Atheros AR231x/AR531x SoC specific CPU feature overrides
+ *
+ *  Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  This file was derived from: include/asm-mips/cpu-features.h
+ *	Copyright (C) 2003, 2004 Ralf Baechle
+ *	Copyright (C) 2004 Maciej W. Rozycki
+ *
+ *  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.
+ *
+ */
+#ifndef __ASM_MACH_ATH25_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_ATH25_CPU_FEATURE_OVERRIDES_H
+
+/*
+ * The Atheros AR531x/AR231x SoCs have MIPS 4Kc/4KEc core.
+ */
+#define cpu_has_tlb			1
+#define cpu_has_4kex			1
+#define cpu_has_3k_cache		0
+#define cpu_has_4k_cache		1
+#define cpu_has_tx39_cache		0
+#define cpu_has_sb1_cache		0
+#define cpu_has_fpu			0
+#define cpu_has_32fpr			0
+#define cpu_has_counter			1
+#define cpu_has_ejtag			1
+
+#if !defined(CONFIG_SOC_AR5312)
+#  define cpu_has_llsc			1
+#else
+/*
+ * The MIPS 4Kc V0.9 core in the AR5312/AR2312 have problems with the
+ * ll/sc instructions.
+ */
+#  define cpu_has_llsc			0
+#endif
+
+#define cpu_has_mips16			0
+#define cpu_has_mdmx			0
+#define cpu_has_mips3d			0
+#define cpu_has_smartmips		0
+
+#define cpu_has_mips32r1		1
+
+#if !defined(CONFIG_SOC_AR5312)
+#  define cpu_has_mips32r2		1
+#endif
+
+#define cpu_has_mips64r1		0
+#define cpu_has_mips64r2		0
+
+#define cpu_has_dsp			0
+#define cpu_has_mipsmt			0
+
+#define cpu_has_64bits			0
+#define cpu_has_64bit_zero_reg		0
+#define cpu_has_64bit_gp_regs		0
+#define cpu_has_64bit_addresses		0
+
+#endif /* __ASM_MACH_ATH25_CPU_FEATURE_OVERRIDES_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/dma-coherence.h
@@ -0,0 +1,82 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006  Ralf Baechle <ralf@linux-mips.org>
+ * Copyright (C) 2007  Felix Fietkau <nbd@openwrt.org>
+ *
+ */
+#ifndef __ASM_MACH_ATH25_DMA_COHERENCE_H
+#define __ASM_MACH_ATH25_DMA_COHERENCE_H
+
+#include <linux/device.h>
+
+/*
+ * We need some arbitrary non-zero value to be programmed to the BAR1 register
+ * of PCI host controller to enable DMA. The same value should be used as the
+ * offset to calculate the physical address of DMA buffer for PCI devices.
+ */
+#define AR2315_PCI_HOST_SDRAM_BASEADDR	0x20000000
+
+static inline dma_addr_t ath25_dev_offset(struct device *dev)
+{
+#ifdef CONFIG_PCI
+	extern struct bus_type pci_bus_type;
+
+	if (dev && dev->bus == &pci_bus_type)
+		return AR2315_PCI_HOST_SDRAM_BASEADDR;
+#endif
+	return 0;
+}
+
+static inline dma_addr_t
+plat_map_dma_mem(struct device *dev, void *addr, size_t size)
+{
+	return virt_to_phys(addr) + ath25_dev_offset(dev);
+}
+
+static inline dma_addr_t
+plat_map_dma_mem_page(struct device *dev, struct page *page)
+{
+	return page_to_phys(page) + ath25_dev_offset(dev);
+}
+
+static inline unsigned long
+plat_dma_addr_to_phys(struct device *dev, dma_addr_t dma_addr)
+{
+	return dma_addr - ath25_dev_offset(dev);
+}
+
+static inline void
+plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, size_t size,
+		   enum dma_data_direction direction)
+{
+}
+
+static inline int plat_dma_supported(struct device *dev, u64 mask)
+{
+	return 1;
+}
+
+static inline void plat_extra_sync_for_device(struct device *dev)
+{
+}
+
+static inline int plat_dma_mapping_error(struct device *dev,
+					 dma_addr_t dma_addr)
+{
+	return 0;
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+#ifdef CONFIG_DMA_COHERENT
+	return 1;
+#endif
+#ifdef CONFIG_DMA_NONCOHERENT
+	return 0;
+#endif
+}
+
+#endif /* __ASM_MACH_ATH25_DMA_COHERENCE_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/gpio.h
@@ -0,0 +1,16 @@
+#ifndef __ASM_MACH_ATH25_GPIO_H
+#define __ASM_MACH_ATH25_GPIO_H
+
+#include <asm-generic/gpio.h>
+
+#define gpio_get_value __gpio_get_value
+#define gpio_set_value __gpio_set_value
+#define gpio_cansleep __gpio_cansleep
+#define gpio_to_irq __gpio_to_irq
+
+static inline int irq_to_gpio(unsigned irq)
+{
+	return -EINVAL;
+}
+
+#endif	/* __ASM_MACH_ATH25_GPIO_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/war.h
@@ -0,0 +1,25 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
+ */
+#ifndef __ASM_MACH_ATH25_WAR_H
+#define __ASM_MACH_ATH25_WAR_H
+
+#define R4600_V1_INDEX_ICACHEOP_WAR	0
+#define R4600_V1_HIT_CACHEOP_WAR	0
+#define R4600_V2_HIT_CACHEOP_WAR	0
+#define R5432_CP0_INTERRUPT_WAR		0
+#define BCM1250_M3_WAR			0
+#define SIBYTE_1956_WAR			0
+#define MIPS4K_ICACHE_REFILL_WAR	0
+#define MIPS_CACHE_SYNC_WAR		0
+#define TX49XX_ICACHE_INDEX_INV_WAR	0
+#define RM9000_CDEX_SMP_WAR		0
+#define ICACHE_REFILLS_WORKAROUND_WAR	0
+#define R10000_LLSC_WAR			0
+#define MIPS34K_MISSED_ITLB_WAR		0
+
+#endif /* __ASM_MACH_ATH25_WAR_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/ar2315_regs.h
@@ -0,0 +1,480 @@
+/*
+ * Register definitions for AR2315+
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006-2008 Felix Fietkau <nbd@openwrt.org>
+ */
+
+#ifndef __ASM_MACH_ATH25_AR2315_REGS_H
+#define __ASM_MACH_ATH25_AR2315_REGS_H
+
+/*
+ * IRQs
+ */
+#define AR2315_IRQ_MISC_INTRS   (MIPS_CPU_IRQ_BASE+2) /* C0_CAUSE: 0x0400 */
+#define AR2315_IRQ_WLAN0_INTRS  (MIPS_CPU_IRQ_BASE+3) /* C0_CAUSE: 0x0800 */
+#define AR2315_IRQ_ENET0_INTRS  (MIPS_CPU_IRQ_BASE+4) /* C0_CAUSE: 0x1000 */
+#define AR2315_IRQ_LCBUS_PCI    (MIPS_CPU_IRQ_BASE+5) /* C0_CAUSE: 0x2000 */
+#define AR2315_IRQ_WLAN0_POLL   (MIPS_CPU_IRQ_BASE+6) /* C0_CAUSE: 0x4000 */
+
+/*
+ * Miscellaneous interrupts, which share IP2.
+ */
+#define AR2315_MISC_IRQ_UART0		(AR231X_MISC_IRQ_BASE+0)
+#define AR2315_MISC_IRQ_I2C_RSVD	(AR231X_MISC_IRQ_BASE+1)
+#define AR2315_MISC_IRQ_SPI		(AR231X_MISC_IRQ_BASE+2)
+#define AR2315_MISC_IRQ_AHB		(AR231X_MISC_IRQ_BASE+3)
+#define AR2315_MISC_IRQ_APB		(AR231X_MISC_IRQ_BASE+4)
+#define AR2315_MISC_IRQ_TIMER		(AR231X_MISC_IRQ_BASE+5)
+#define AR2315_MISC_IRQ_GPIO		(AR231X_MISC_IRQ_BASE+6)
+#define AR2315_MISC_IRQ_WATCHDOG	(AR231X_MISC_IRQ_BASE+7)
+#define AR2315_MISC_IRQ_IR_RSVD		(AR231X_MISC_IRQ_BASE+8)
+#define AR2315_MISC_IRQ_COUNT		9
+
+/*
+ * Address map
+ */
+#define AR2315_SPI_READ         0x08000000      /* SPI FLASH */
+#define AR2315_WLAN0            0x10000000      /* Wireless MMR */
+#define AR2315_PCI              0x10100000      /* PCI MMR */
+#define AR2315_PCI_SIZE		0x00001000
+#define AR2315_SDRAMCTL_BASE	0x10300000	/* SDRAM MMR */
+#define AR2315_SDRAMCTL_SIZE	0x00000020
+#define AR2315_LOCAL_BASE	0x10400000	/* Local bus MMR */
+#define AR2315_ENET0            0x10500000      /* ETHERNET MMR */
+#define AR2315_RST_BASE		0x11000000	/* Reset control MMR */
+#define AR2315_RST_SIZE		0x00000100
+#define AR2315_UART0            0x11100000      /* UART MMR */
+#define AR2315_SPI_MMR          0x11300000      /* SPI FLASH MMR */
+#define AR2315_PCIEXT           0x80000000      /* pci external */
+#define AR2315_PCIEXT_SZ	0x40000000
+
+/* MII registers offset inside Ethernet MMR region */
+#define AR2315_ENET0_MII	(AR2315_ENET0 + 0x14)
+
+/*
+ * Cold reset register
+ */
+#define AR2315_COLD_RESET		0x0000
+
+#define AR2315_RESET_COLD_AHB              0x00000001
+#define AR2315_RESET_COLD_APB              0x00000002
+#define AR2315_RESET_COLD_CPU              0x00000004
+#define AR2315_RESET_COLD_CPUWARM          0x00000008
+#define AR2315_RESET_SYSTEM	\
+	(RESET_COLD_CPU |\
+	 RESET_COLD_APB |\
+	 RESET_COLD_AHB)                                   /* full system */
+#define AR2317_RESET_SYSTEM                0x00000010
+
+/*
+ * Reset register
+ */
+#define AR2315_RESET			0x0004
+
+/* warm reset WLAN0 MAC */
+#define AR2315_RESET_WARM_WLAN0_MAC        0x00000001
+/* warm reset WLAN0 BaseBand */
+#define AR2315_RESET_WARM_WLAN0_BB         0x00000002
+/* warm reset MPEG-TS */
+#define AR2315_RESET_MPEGTS_RSVD           0x00000004
+/* warm reset PCI ahb/dma */
+#define AR2315_RESET_PCIDMA                0x00000008
+/* warm reset memory controller */
+#define AR2315_RESET_MEMCTL                0x00000010
+/* warm reset local bus */
+#define AR2315_RESET_LOCAL                 0x00000020
+/* warm reset I2C bus */
+#define AR2315_RESET_I2C_RSVD              0x00000040
+/* warm reset SPI interface */
+#define AR2315_RESET_SPI                   0x00000080
+/* warm reset UART0 */
+#define AR2315_RESET_UART0                 0x00000100
+/* warm reset IR interface */
+#define AR2315_RESET_IR_RSVD               0x00000200
+/* cold reset ENET0 phy */
+#define AR2315_RESET_EPHY0                 0x00000400
+/* cold reset ENET0 mac */
+#define AR2315_RESET_ENET0                 0x00000800
+
+/*
+ * AHB master arbitration control
+ */
+#define AR2315_AHB_ARB_CTL		0x0008
+
+/* CPU, default */
+#define AR2315_ARB_CPU                     0x00000001
+/* WLAN */
+#define AR2315_ARB_WLAN                    0x00000002
+/* MPEG-TS */
+#define AR2315_ARB_MPEGTS_RSVD             0x00000004
+/* LOCAL */
+#define AR2315_ARB_LOCAL                   0x00000008
+/* PCI */
+#define AR2315_ARB_PCI                     0x00000010
+/* Ethernet */
+#define AR2315_ARB_ETHERNET                0x00000020
+/* retry policy, debug only */
+#define AR2315_ARB_RETRY                   0x00000100
+
+/*
+ * Config Register
+ */
+#define AR2315_ENDIAN_CTL		0x000c
+
+/* EC - AHB bridge endianess */
+#define AR2315_CONFIG_AHB                  0x00000001
+/* WLAN byteswap */
+#define AR2315_CONFIG_WLAN                 0x00000002
+/* MPEG-TS byteswap */
+#define AR2315_CONFIG_MPEGTS_RSVD          0x00000004
+/* PCI byteswap */
+#define AR2315_CONFIG_PCI                  0x00000008
+/* Memory controller endianess */
+#define AR2315_CONFIG_MEMCTL               0x00000010
+/* Local bus byteswap */
+#define AR2315_CONFIG_LOCAL                0x00000020
+/* Ethernet byteswap */
+#define AR2315_CONFIG_ETHERNET             0x00000040
+
+/* CPU write buffer merge */
+#define AR2315_CONFIG_MERGE                0x00000200
+/* CPU big endian */
+#define AR2315_CONFIG_CPU                  0x00000400
+#define AR2315_CONFIG_PCIAHB               0x00000800
+#define AR2315_CONFIG_PCIAHB_BRIDGE        0x00001000
+/* SPI byteswap */
+#define AR2315_CONFIG_SPI                  0x00008000
+#define AR2315_CONFIG_CPU_DRAM             0x00010000
+#define AR2315_CONFIG_CPU_PCI              0x00020000
+#define AR2315_CONFIG_CPU_MMR              0x00040000
+#define AR2315_CONFIG_BIG                  0x00000400
+
+/*
+ * NMI control
+ */
+#define AR2315_NMI_CTL			0x0010
+
+#define AR2315_NMI_EN  1
+
+/*
+ * Revision Register - Initial value is 0x3010 (WMAC 3.0, AR231X 1.0).
+ */
+#define AR2315_SREV			0x0014
+
+#define AR2315_REV_MAJ                     0x00f0
+#define AR2315_REV_MAJ_S                   4
+#define AR2315_REV_MIN                     0x000f
+#define AR2315_REV_MIN_S                   0
+#define AR2315_REV_CHIP                    (AR2315_REV_MAJ|AR2315_REV_MIN)
+
+/*
+ * Interface Enable
+ */
+#define AR2315_IF_CTL			0x0018
+
+#define AR2315_IF_MASK                     0x00000007
+#define AR2315_IF_DISABLED                 0
+#define AR2315_IF_PCI                      1
+#define AR2315_IF_TS_LOCAL                 2
+/* only for emulation with separate pins */
+#define AR2315_IF_ALL                      3
+#define AR2315_IF_LOCAL_HOST               0x00000008
+#define AR2315_IF_PCI_HOST                 0x00000010
+#define AR2315_IF_PCI_INTR                 0x00000020
+#define AR2315_IF_PCI_CLK_MASK             0x00030000
+#define AR2315_IF_PCI_CLK_INPUT            0
+#define AR2315_IF_PCI_CLK_OUTPUT_LOW       1
+#define AR2315_IF_PCI_CLK_OUTPUT_CLK       2
+#define AR2315_IF_PCI_CLK_OUTPUT_HIGH      3
+#define AR2315_IF_PCI_CLK_SHIFT            16
+
+/*
+ * APB Interrupt control
+ */
+
+#define AR2315_ISR			0x0020
+#define AR2315_IMR			0x0024
+#define AR2315_GISR			0x0028
+
+#define AR2315_ISR_UART0	0x0001           /* high speed UART */
+#define AR2315_ISR_I2C_RSVD	0x0002           /* I2C bus */
+#define AR2315_ISR_SPI		0x0004           /* SPI bus */
+#define AR2315_ISR_AHB		0x0008           /* AHB error */
+#define AR2315_ISR_APB		0x0010           /* APB error */
+#define AR2315_ISR_TIMER	0x0020           /* timer */
+#define AR2315_ISR_GPIO		0x0040           /* GPIO */
+#define AR2315_ISR_WD		0x0080           /* watchdog */
+#define AR2315_ISR_IR_RSVD	0x0100           /* IR */
+
+#define AR2315_GISR_MISC	0x0001
+#define AR2315_GISR_WLAN0	0x0002
+#define AR2315_GISR_MPEGTS_RSVD	0x0004
+#define AR2315_GISR_LOCALPCI	0x0008
+#define AR2315_GISR_WMACPOLL	0x0010
+#define AR2315_GISR_TIMER	0x0020
+#define AR2315_GISR_ETHERNET	0x0040
+
+/*
+ * Timers
+ */
+#define AR2315_TIMER			0x0030
+#define AR2315_RELOAD			0x0034
+
+#define AR2315_WD			0x0038
+#define AR2315_WDC			0x003c
+
+#define AR2315_WDC_IGNORE_EXPIRATION	0x00000000
+#define AR2315_WDC_NMI			0x00000001	/* NMI on watchdog */
+#define AR2315_WDC_RESET		0x00000002	/* reset on watchdog */
+
+/*
+ * CPU Performance Counters
+ */
+#define AR2315_PERFCNT0			0x0048
+#define AR2315_PERFCNT1			0x004c
+
+#define AR2315_PERF0_DATAHIT	0x0001  /* Count Data Cache Hits */
+#define AR2315_PERF0_DATAMISS	0x0002  /* Count Data Cache Misses */
+#define AR2315_PERF0_INSTHIT	0x0004  /* Count Instruction Cache Hits */
+#define AR2315_PERF0_INSTMISS	0x0008  /* Count Instruction Cache Misses */
+#define AR2315_PERF0_ACTIVE	0x0010  /* Count Active Processor Cycles */
+#define AR2315_PERF0_WBHIT	0x0020  /* Count CPU Write Buffer Hits */
+#define AR2315_PERF0_WBMISS	0x0040  /* Count CPU Write Buffer Misses */
+
+#define AR2315_PERF1_EB_ARDY	0x0001  /* Count EB_ARdy signal */
+#define AR2315_PERF1_EB_AVALID	0x0002  /* Count EB_AValid signal */
+#define AR2315_PERF1_EB_WDRDY	0x0004  /* Count EB_WDRdy signal */
+#define AR2315_PERF1_EB_RDVAL	0x0008  /* Count EB_RdVal signal */
+#define AR2315_PERF1_VRADDR	0x0010  /* Count valid read address cycles */
+#define AR2315_PERF1_VWADDR	0x0020  /* Count valid write address cycles */
+#define AR2315_PERF1_VWDATA	0x0040  /* Count valid write data cycles */
+
+/*
+ * AHB Error Reporting.
+ */
+#define AR2315_AHB_ERR0			0x0050  /* error  */
+#define AR2315_AHB_ERR1			0x0054  /* haddr  */
+#define AR2315_AHB_ERR2			0x0058  /* hwdata */
+#define AR2315_AHB_ERR3			0x005c  /* hrdata */
+#define AR2315_AHB_ERR4			0x0060  /* status */
+
+#define AHB_ERROR_DET	1 /* AHB Error has been detected,          */
+			  /* write 1 to clear all bits in ERR0     */
+#define AHB_ERROR_OVR	2 /* AHB Error overflow has been detected  */
+#define AHB_ERROR_WDT	4 /* AHB Error due to wdt instead of hresp */
+
+#define AR2315_PROCERR_HMAST               0x0000000f
+#define AR2315_PROCERR_HMAST_DFLT          0
+#define AR2315_PROCERR_HMAST_WMAC          1
+#define AR2315_PROCERR_HMAST_ENET          2
+#define AR2315_PROCERR_HMAST_PCIENDPT      3
+#define AR2315_PROCERR_HMAST_LOCAL         4
+#define AR2315_PROCERR_HMAST_CPU           5
+#define AR2315_PROCERR_HMAST_PCITGT        6
+
+#define AR2315_PROCERR_HMAST_S             0
+#define AR2315_PROCERR_HWRITE              0x00000010
+#define AR2315_PROCERR_HSIZE               0x00000060
+#define AR2315_PROCERR_HSIZE_S             5
+#define AR2315_PROCERR_HTRANS              0x00000180
+#define AR2315_PROCERR_HTRANS_S            7
+#define AR2315_PROCERR_HBURST              0x00000e00
+#define AR2315_PROCERR_HBURST_S            9
+
+/*
+ * Clock Control
+ */
+#define AR2315_PLLC_CTL			0x0064
+#define AR2315_PLLV_CTL			0x0068
+#define AR2315_CPUCLK			0x006c
+#define AR2315_AMBACLK			0x0070
+#define AR2315_SYNCCLK			0x0074
+#define AR2315_DSL_SLEEP_CTL		0x0080
+#define AR2315_DSL_SLEEP_DUR		0x0084
+
+/* PLLc Control fields */
+#define PLLC_REF_DIV_M              0x00000003
+#define PLLC_REF_DIV_S              0
+#define PLLC_FDBACK_DIV_M           0x0000007C
+#define PLLC_FDBACK_DIV_S           2
+#define PLLC_ADD_FDBACK_DIV_M       0x00000080
+#define PLLC_ADD_FDBACK_DIV_S       7
+#define PLLC_CLKC_DIV_M             0x0001c000
+#define PLLC_CLKC_DIV_S             14
+#define PLLC_CLKM_DIV_M             0x00700000
+#define PLLC_CLKM_DIV_S             20
+
+/* CPU CLK Control fields */
+#define CPUCLK_CLK_SEL_M            0x00000003
+#define CPUCLK_CLK_SEL_S            0
+#define CPUCLK_CLK_DIV_M            0x0000000c
+#define CPUCLK_CLK_DIV_S            2
+
+/* AMBA CLK Control fields */
+#define AMBACLK_CLK_SEL_M           0x00000003
+#define AMBACLK_CLK_SEL_S           0
+#define AMBACLK_CLK_DIV_M           0x0000000c
+#define AMBACLK_CLK_DIV_S           2
+
+/* GPIO MMR base address */
+#define AR2315_GPIO			0x0088
+
+#define AR2315_RESET_GPIO       5
+
+/*
+ *  PCI Clock Control
+ */
+#define AR2315_PCICLK			0x00a4
+
+#define AR2315_PCICLK_INPUT_M              0x3
+#define AR2315_PCICLK_INPUT_S              0
+
+#define AR2315_PCICLK_PLLC_CLKM            0
+#define AR2315_PCICLK_PLLC_CLKM1           1
+#define AR2315_PCICLK_PLLC_CLKC            2
+#define AR2315_PCICLK_REF_CLK              3
+
+#define AR2315_PCICLK_DIV_M                0xc
+#define AR2315_PCICLK_DIV_S                2
+
+#define AR2315_PCICLK_IN_FREQ              0
+#define AR2315_PCICLK_IN_FREQ_DIV_6        1
+#define AR2315_PCICLK_IN_FREQ_DIV_8        2
+#define AR2315_PCICLK_IN_FREQ_DIV_10       3
+
+/*
+ * Observation Control Register
+ */
+#define AR2315_OCR			0x00b0
+
+#define OCR_GPIO0_IRIN              0x0040
+#define OCR_GPIO1_IROUT             0x0080
+#define OCR_GPIO3_RXCLR             0x0200
+
+/*
+ *  General Clock Control
+ */
+#define AR2315_MISCCLK			0x00b4
+
+#define MISCCLK_PLLBYPASS_EN        0x00000001
+#define MISCCLK_PROCREFCLK          0x00000002
+
+/*
+ * SDRAM Controller
+ *   - No read or write buffers are included.
+ */
+#define AR2315_MEM_CFG			0x0000
+#define AR2315_MEM_CTRL			0x000c
+#define AR2315_MEM_REF			0x0010
+
+#define SDRAM_DATA_WIDTH_M          0x00006000
+#define SDRAM_DATA_WIDTH_S          13
+
+#define SDRAM_COL_WIDTH_M           0x00001E00
+#define SDRAM_COL_WIDTH_S           9
+
+#define SDRAM_ROW_WIDTH_M           0x000001E0
+#define SDRAM_ROW_WIDTH_S           5
+
+#define SDRAM_BANKADDR_BITS_M       0x00000018
+#define SDRAM_BANKADDR_BITS_S       3
+
+/*
+ * Local Bus Interface Registers
+ */
+#define AR2315_LB_CONFIG		0x0000
+
+#define AR2315_LBCONF_OE        0x00000001    /* =1 OE is low-true */
+#define AR2315_LBCONF_CS0       0x00000002    /* =1 first CS is low-true */
+#define AR2315_LBCONF_CS1       0x00000004    /* =1 2nd CS is low-true */
+#define AR2315_LBCONF_RDY       0x00000008    /* =1 RDY is low-true */
+#define AR2315_LBCONF_WE        0x00000010    /* =1 Write En is low-true */
+#define AR2315_LBCONF_WAIT      0x00000020    /* =1 WAIT is low-true */
+#define AR2315_LBCONF_ADS       0x00000040    /* =1 Adr Strobe is low-true */
+#define AR2315_LBCONF_MOT       0x00000080    /* =0 Intel, =1 Motorola */
+#define AR2315_LBCONF_8CS       0x00000100    /* =1 8 bits CS, 0= 16bits */
+#define AR2315_LBCONF_8DS       0x00000200    /* =1 8 bits Data S, 0=16bits */
+#define AR2315_LBCONF_ADS_EN    0x00000400    /* =1 Enable ADS */
+#define AR2315_LBCONF_ADR_OE    0x00000800    /* =1 Adr cap on OE, WE or DS */
+#define AR2315_LBCONF_ADDT_MUX  0x00001000    /* =1 Adr and Data share bus */
+#define AR2315_LBCONF_DATA_OE   0x00002000    /* =1 Data cap on OE, WE, DS */
+#define AR2315_LBCONF_16DATA    0x00004000    /* =1 Data is 16 bits wide */
+#define AR2315_LBCONF_SWAPDT    0x00008000    /* =1 Byte swap data */
+#define AR2315_LBCONF_SYNC      0x00010000    /* =1 Bus synchronous to clk */
+#define AR2315_LBCONF_INT       0x00020000    /* =1 Intr is low true */
+#define AR2315_LBCONF_INT_CTR0  0x00000000    /* GND high-Z, Vdd is high-Z */
+#define AR2315_LBCONF_INT_CTR1  0x00040000    /* GND drive, Vdd is high-Z */
+#define AR2315_LBCONF_INT_CTR2  0x00080000    /* GND high-Z, Vdd drive */
+#define AR2315_LBCONF_INT_CTR3  0x000C0000    /* GND drive, Vdd drive */
+#define AR2315_LBCONF_RDY_WAIT  0x00100000    /* =1 RDY is negative of WAIT */
+#define AR2315_LBCONF_INT_PULSE 0x00200000    /* =1 Interrupt is a pulse */
+#define AR2315_LBCONF_ENABLE    0x00400000    /* =1 Falcon respond to LB */
+
+#define AR2315_LB_CLKSEL		0x0004
+
+#define AR2315_LBCLK_EXT        0x0001        /* use external clk for lb */
+
+#define AR2315_LB_1MS			0x0008
+
+#define AR2315_LB1MS_MASK       0x3FFFF       /* # of AHB clk cycles in 1ms */
+
+#define AR2315_LB_MISCCFG		0x000c
+#define AR2315_LBM_TXD_EN       0x00000001    /* Enable TXD for fragments */
+#define AR2315_LBM_RX_INTEN     0x00000002    /* Enable LB ints on RX ready */
+#define AR2315_LBM_MBOXWR_INTEN 0x00000004    /* Enable LB ints on mbox wr */
+#define AR2315_LBM_MBOXRD_INTEN 0x00000008    /* Enable LB ints on mbox rd */
+#define AR2315_LMB_DESCSWAP_EN  0x00000010    /* Byte swap desc enable */
+#define AR2315_LBM_TIMEOUT_MASK 0x00FFFF80
+#define AR2315_LBM_TIMEOUT_SHFT 7
+#define AR2315_LBM_PORTMUX      0x07000000
+
+#define AR2315_LB_RXTSOFF		0x0010
+
+#define AR2315_LB_TX_CHAIN_EN		0x0100
+
+#define AR2315_LB_TXEN_0        0x01
+#define AR2315_LB_TXEN_1        0x02
+#define AR2315_LB_TXEN_2        0x04
+#define AR2315_LB_TXEN_3        0x08
+
+#define AR2315_LB_TX_CHAIN_DIS		0x0104
+#define AR2315_LB_TX_DESC_PTR		0x0200
+
+#define AR2315_LB_RX_CHAIN_EN		0x0400
+
+#define AR2315_LB_RXEN          0x01
+
+#define AR2315_LB_RX_CHAIN_DIS		0x0404
+#define AR2315_LB_RX_DESC_PTR		0x0408
+
+#define AR2315_LB_INT_STATUS		0x0500
+
+#define AR2315_INT_TX_DESC      0x0001
+#define AR2315_INT_TX_OK        0x0002
+#define AR2315_INT_TX_ERR       0x0004
+#define AR2315_INT_TX_EOF       0x0008
+#define AR2315_INT_RX_DESC      0x0010
+#define AR2315_INT_RX_OK        0x0020
+#define AR2315_INT_RX_ERR       0x0040
+#define AR2315_INT_RX_EOF       0x0080
+#define AR2315_INT_TX_TRUNC     0x0100
+#define AR2315_INT_TX_STARVE    0x0200
+#define AR2315_INT_LB_TIMEOUT   0x0400
+#define AR2315_INT_LB_ERR       0x0800
+#define AR2315_INT_MBOX_WR      0x1000
+#define AR2315_INT_MBOX_RD      0x2000
+
+/* Bit definitions for INT MASK are the same as INT_STATUS */
+#define AR2315_LB_INT_MASK		0x0504
+
+#define AR2315_LB_INT_EN		0x0508
+#define AR2315_LB_MBOX			0x0600
+
+#endif /* __ASM_MACH_ATH25_AR2315_REGS_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/ar5312_regs.h
@@ -0,0 +1,227 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ */
+
+#ifndef __ASM_MACH_ATH25_AR5312_REGS_H
+#define __ASM_MACH_ATH25_AR5312_REGS_H
+
+#include <asm/addrspace.h>
+
+/*
+ * IRQs
+ */
+#define AR5312_IRQ_WLAN0_INTRS  (MIPS_CPU_IRQ_BASE+2) /* C0_CAUSE: 0x0400 */
+#define AR5312_IRQ_ENET0_INTRS  (MIPS_CPU_IRQ_BASE+3) /* C0_CAUSE: 0x0800 */
+#define AR5312_IRQ_ENET1_INTRS  (MIPS_CPU_IRQ_BASE+4) /* C0_CAUSE: 0x1000 */
+#define AR5312_IRQ_WLAN1_INTRS  (MIPS_CPU_IRQ_BASE+5) /* C0_CAUSE: 0x2000 */
+#define AR5312_IRQ_MISC_INTRS   (MIPS_CPU_IRQ_BASE+6) /* C0_CAUSE: 0x4000 */
+
+/*
+ * Miscellaneous interrupts, which share IP6.
+ */
+#define AR5312_MISC_IRQ_TIMER		(AR231X_MISC_IRQ_BASE+0)
+#define AR5312_MISC_IRQ_AHB_PROC	(AR231X_MISC_IRQ_BASE+1)
+#define AR5312_MISC_IRQ_AHB_DMA		(AR231X_MISC_IRQ_BASE+2)
+#define AR5312_MISC_IRQ_GPIO		(AR231X_MISC_IRQ_BASE+3)
+#define AR5312_MISC_IRQ_UART0		(AR231X_MISC_IRQ_BASE+4)
+#define AR5312_MISC_IRQ_UART0_DMA	(AR231X_MISC_IRQ_BASE+5)
+#define AR5312_MISC_IRQ_WATCHDOG	(AR231X_MISC_IRQ_BASE+6)
+#define AR5312_MISC_IRQ_LOCAL		(AR231X_MISC_IRQ_BASE+7)
+#define AR5312_MISC_IRQ_SPI		(AR231X_MISC_IRQ_BASE+8)
+#define AR5312_MISC_IRQ_COUNT		9
+
+/*
+ * Address Map
+ *
+ * The AR5312 supports 2 enet MACS, even though many reference boards only
+ * actually use 1 of them (i.e. Only MAC 0 is actually connected to an enet
+ * PHY or PHY switch. The AR2312 supports 1 enet MAC.
+ */
+#define AR5312_WLAN0            0x18000000
+#define AR5312_WLAN1            0x18500000
+#define AR5312_ENET0            0x18100000
+#define AR5312_ENET1            0x18200000
+#define AR5312_SDRAMCTL_BASE		0x18300000
+#define AR5312_SDRAMCTL_SIZE		0x00000010
+#define AR5312_FLASHCTL_BASE		0x18400000
+#define AR5312_FLASHCTL_SIZE		0x00000010
+#define AR5312_UART0            0x1c000000      /* UART MMR */
+#define AR5312_GPIO_BASE		0x1c002000
+#define AR5312_RST_BASE			0x1c003000
+#define AR5312_RST_SIZE			0x00000100
+#define AR5312_FLASH            0x1e000000
+
+/*
+ * Need these defines to determine true number of ethernet MACs
+ */
+#define AR5312_AR5312_REV2      0x0052          /* AR5312 WMAC (AP31) */
+#define AR5312_AR5312_REV7      0x0057          /* AR5312 WMAC (AP30-040) */
+#define AR5312_AR2313_REV8      0x0058          /* AR2313 WMAC (AP43-030) */
+
+/* MII registers offset inside Ethernet MMR region */
+#define AR5312_ENET0_MII	(AR5312_ENET0 + 0x14)
+#define AR5312_ENET1_MII	(AR5312_ENET1 + 0x14)
+
+/* Reset/Timer Block Address Map */
+#define AR5312_TIMER		0x0000 /* countdown timer */
+#define AR5312_RELOAD		0x0004 /* timer reload value */
+#define AR5312_WD_CTRL		0x0008 /* watchdog cntrl */
+#define AR5312_WD_TIMER		0x000c /* watchdog timer */
+#define AR5312_ISR		0x0010 /* Intr Status Reg */
+#define AR5312_IMR		0x0014 /* Intr Mask Reg */
+#define AR5312_RESET		0x0020
+#define AR5312_CLOCKCTL1	0x0064
+#define AR5312_SCRATCH		0x006c
+#define AR5312_PROCADDR		0x0070
+#define AR5312_PROC1		0x0074
+#define AR5312_DMAADDR		0x0078
+#define AR5312_DMA1		0x007c
+#define AR5312_ENABLE		0x0080 /* interface enb */
+#define AR5312_REV		0x0090 /* revision */
+
+/* AR5312_WD_CTRL register bit field definitions */
+#define AR5312_WD_CTRL_IGNORE_EXPIRATION 0x0000
+#define AR5312_WD_CTRL_NMI               0x0001
+#define AR5312_WD_CTRL_RESET             0x0002
+
+/* AR5312_ISR register bit field definitions */
+#define AR5312_ISR_TIMER	0x0001
+#define AR5312_ISR_AHBPROC	0x0002
+#define AR5312_ISR_AHBDMA	0x0004
+#define AR5312_ISR_GPIO		0x0008
+#define AR5312_ISR_UART0	0x0010
+#define AR5312_ISR_UART0DMA	0x0020
+#define AR5312_ISR_WD		0x0040
+#define AR5312_ISR_LOCAL	0x0080
+
+/* AR5312_RESET register bit field definitions */
+#define AR5312_RESET_SYSTEM     0x00000001  /* cold reset full system */
+#define AR5312_RESET_PROC       0x00000002  /* cold reset MIPS core */
+#define AR5312_RESET_WLAN0      0x00000004  /* cold reset WLAN MAC and BB */
+#define AR5312_RESET_EPHY0      0x00000008  /* cold reset ENET0 phy */
+#define AR5312_RESET_EPHY1      0x00000010  /* cold reset ENET1 phy */
+#define AR5312_RESET_ENET0      0x00000020  /* cold reset ENET0 mac */
+#define AR5312_RESET_ENET1      0x00000040  /* cold reset ENET1 mac */
+#define AR5312_RESET_UART0      0x00000100  /* cold reset UART0 (high speed) */
+#define AR5312_RESET_WLAN1      0x00000200  /* cold reset WLAN MAC/BB */
+#define AR5312_RESET_APB        0x00000400  /* cold reset APB (ar5312) */
+#define AR5312_RESET_WARM_PROC  0x00001000  /* warm reset MIPS core */
+#define AR5312_RESET_WARM_WLAN0_MAC 0x00002000  /* warm reset WLAN0 MAC */
+#define AR5312_RESET_WARM_WLAN0_BB  0x00004000  /* warm reset WLAN0 BaseBand */
+#define AR5312_RESET_NMI        0x00010000  /* send an NMI to the processor */
+#define AR5312_RESET_WARM_WLAN1_MAC 0x00020000  /* warm reset WLAN1 mac */
+#define AR5312_RESET_WARM_WLAN1_BB  0x00040000  /* warm reset WLAN1 baseband */
+#define AR5312_RESET_LOCAL_BUS  0x00080000  /* reset local bus */
+#define AR5312_RESET_WDOG       0x00100000  /* last reset was a watchdog */
+
+#define AR5312_RESET_WMAC0_BITS \
+	(AR5312_RESET_WLAN0 |\
+	 AR5312_RESET_WARM_WLAN0_MAC |\
+	 AR5312_RESET_WARM_WLAN0_BB)
+
+#define AR5312_RESET_WMAC1_BITS \
+	(AR5312_RESET_WLAN1 |\
+	 AR5312_RESET_WARM_WLAN1_MAC |\
+	 AR5312_RESET_WARM_WLAN1_BB)
+
+/* AR5312_CLOCKCTL1 register bit field definitions */
+#define AR5312_CLOCKCTL1_PREDIVIDE_MASK    0x00000030
+#define AR5312_CLOCKCTL1_PREDIVIDE_SHIFT            4
+#define AR5312_CLOCKCTL1_MULTIPLIER_MASK   0x00001f00
+#define AR5312_CLOCKCTL1_MULTIPLIER_SHIFT           8
+#define AR5312_CLOCKCTL1_DOUBLER_MASK      0x00010000
+
+/* Valid for AR5312 and AR2312 */
+#define AR5312_CLOCKCTL1_PREDIVIDE_MASK    0x00000030
+#define AR5312_CLOCKCTL1_PREDIVIDE_SHIFT            4
+#define AR5312_CLOCKCTL1_MULTIPLIER_MASK   0x00001f00
+#define AR5312_CLOCKCTL1_MULTIPLIER_SHIFT           8
+#define AR5312_CLOCKCTL1_DOUBLER_MASK      0x00010000
+
+/* Valid for AR2313 */
+#define AR2313_CLOCKCTL1_PREDIVIDE_MASK    0x00003000
+#define AR2313_CLOCKCTL1_PREDIVIDE_SHIFT           12
+#define AR2313_CLOCKCTL1_MULTIPLIER_MASK   0x001f0000
+#define AR2313_CLOCKCTL1_MULTIPLIER_SHIFT          16
+#define AR2313_CLOCKCTL1_DOUBLER_MASK      0x00000000
+
+/* AR5312_ENABLE register bit field definitions */
+#define AR5312_ENABLE_WLAN0              0x0001
+#define AR5312_ENABLE_ENET0              0x0002
+#define AR5312_ENABLE_ENET1              0x0004
+#define AR5312_ENABLE_UART_AND_WLAN1_PIO 0x0008   /* UART, and WLAN1 PIOs */
+#define AR5312_ENABLE_WLAN1_DMA          0x0010   /* WLAN1 DMAs */
+#define AR5312_ENABLE_WLAN1 \
+	(AR5312_ENABLE_UART_AND_WLAN1_PIO |\
+	 AR5312_ENABLE_WLAN1_DMA)
+
+/* AR5312_REV register bit field definitions */
+#define AR5312_REV_WMAC_MAJ    0xf000
+#define AR5312_REV_WMAC_MAJ_S  12
+#define AR5312_REV_WMAC_MIN    0x0f00
+#define AR5312_REV_WMAC_MIN_S  8
+#define AR5312_REV_MAJ         0x00f0
+#define AR5312_REV_MAJ_S       4
+#define AR5312_REV_MIN         0x000f
+#define AR5312_REV_MIN_S       0
+#define AR5312_REV_CHIP        (AR5312_REV_MAJ|AR5312_REV_MIN)
+
+/* Major revision numbers, bits 7..4 of Revision ID register */
+#define AR5312_REV_MAJ_AR5312          0x4
+#define AR5312_REV_MAJ_AR2313          0x5
+
+/* Minor revision numbers, bits 3..0 of Revision ID register */
+#define AR5312_REV_MIN_DUAL     0x0     /* Dual WLAN version */
+#define AR5312_REV_MIN_SINGLE   0x1     /* Single WLAN version */
+
+/* ARM Flash Controller -- 3 flash banks with either x8 or x16 devices.  */
+#define AR5312_FLASHCTL0	0x0000
+#define AR5312_FLASHCTL1	0x0004
+#define AR5312_FLASHCTL2	0x0008
+
+/* AR5312_FLASHCTL register bit field definitions */
+#define FLASHCTL_IDCY   0x0000000f      /* Idle cycle turn around time */
+#define FLASHCTL_IDCY_S 0
+#define FLASHCTL_WST1   0x000003e0      /* Wait state 1 */
+#define FLASHCTL_WST1_S 5
+#define FLASHCTL_RBLE   0x00000400      /* Read byte lane enable */
+#define FLASHCTL_WST2   0x0000f800      /* Wait state 2 */
+#define FLASHCTL_WST2_S 11
+#define FLASHCTL_AC     0x00070000      /* Flash address check (added) */
+#define FLASHCTL_AC_S   16
+#define FLASHCTL_AC_128K 0x00000000
+#define FLASHCTL_AC_256K 0x00010000
+#define FLASHCTL_AC_512K 0x00020000
+#define FLASHCTL_AC_1M   0x00030000
+#define FLASHCTL_AC_2M   0x00040000
+#define FLASHCTL_AC_4M   0x00050000
+#define FLASHCTL_AC_8M   0x00060000
+#define FLASHCTL_AC_RES  0x00070000     /* 16MB is not supported */
+#define FLASHCTL_E      0x00080000      /* Flash bank enable (added) */
+#define FLASHCTL_BUSERR 0x01000000      /* Bus transfer error status flag */
+#define FLASHCTL_WPERR  0x02000000      /* Write protect error status flag */
+#define FLASHCTL_WP     0x04000000      /* Write protect */
+#define FLASHCTL_BM     0x08000000      /* Burst mode */
+#define FLASHCTL_MW     0x30000000      /* Memory width */
+#define FLASHCTL_MW8    0x00000000      /* Memory width x8 */
+#define FLASHCTL_MW16   0x10000000      /* Memory width x16 */
+#define FLASHCTL_MW32   0x20000000      /* Memory width x32 (not supported) */
+#define FLASHCTL_ATNR   0x00000000      /* Access type == no retry */
+#define FLASHCTL_ATR    0x80000000      /* Access type == retry every */
+#define FLASHCTL_ATR4   0xc0000000      /* Access type == retry every 4 */
+
+/* ARM SDRAM Controller -- just enough to determine memory size */
+#define AR5312_MEM_CFG1		0x0004
+
+#define MEM_CFG1_AC0    0x00000700      /* bank 0: SDRAM addr check (added) */
+#define MEM_CFG1_AC0_S  8
+#define MEM_CFG1_AC1    0x00007000      /* bank 1: SDRAM addr check (added) */
+#define MEM_CFG1_AC1_S  12
+
+#endif	/* __ASM_MACH_ATH25_AR5312_REGS_H */
--- /dev/null
+++ b/arch/mips/ath25/ar5312.c
@@ -0,0 +1,483 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2012 Alexandros C. Couloumbis <alex@ozo.com>
+ */
+
+/*
+ * Platform devices for Atheros SoCs
+ */
+
+#include <generated/autoconf.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/mtd/physmap.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <asm/bootinfo.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include <ath25_platform.h>
+#include <ar5312_regs.h>
+#include <ar231x.h>
+#include "devices.h"
+#include "ar5312.h"
+
+static void __iomem *ar5312_rst_base;
+
+static inline u32 ar5312_rst_reg_read(u32 reg)
+{
+	return __raw_readl(ar5312_rst_base + reg);
+}
+
+static inline void ar5312_rst_reg_write(u32 reg, u32 val)
+{
+	__raw_writel(val, ar5312_rst_base + reg);
+}
+
+static inline void ar5312_rst_reg_mask(u32 reg, u32 mask, u32 val)
+{
+	u32 ret = ar5312_rst_reg_read(reg);
+
+	ret &= ~mask;
+	ret |= val;
+	ar5312_rst_reg_write(reg, ret);
+}
+
+static irqreturn_t ar5312_ahb_err_handler(int cpl, void *dev_id)
+{
+	u32 proc1 = ar5312_rst_reg_read(AR5312_PROC1);
+	u32 proc_addr = ar5312_rst_reg_read(AR5312_PROCADDR); /* clears error */
+	u32 dma1 = ar5312_rst_reg_read(AR5312_DMA1);
+	u32 dma_addr = ar5312_rst_reg_read(AR5312_DMAADDR);   /* clears error */
+
+	pr_emerg("AHB interrupt: PROCADDR=0x%8.8x PROC1=0x%8.8x DMAADDR=0x%8.8x DMA1=0x%8.8x\n",
+		 proc_addr, proc1, dma_addr, dma1);
+
+	machine_restart("AHB error"); /* Catastrophic failure */
+	return IRQ_HANDLED;
+}
+
+static struct irqaction ar5312_ahb_err_interrupt  = {
+	.handler = ar5312_ahb_err_handler,
+	.name    = "ar5312-ahb-error",
+};
+
+static void ar5312_misc_irq_handler(unsigned irq, struct irq_desc *desc)
+{
+	unsigned int ar231x_misc_intrs = ar5312_rst_reg_read(AR5312_ISR) &
+					 ar5312_rst_reg_read(AR5312_IMR);
+
+	if (ar231x_misc_intrs & AR5312_ISR_TIMER) {
+		generic_handle_irq(AR5312_MISC_IRQ_TIMER);
+		(void)ar5312_rst_reg_read(AR5312_TIMER);
+	} else if (ar231x_misc_intrs & AR5312_ISR_AHBPROC)
+		generic_handle_irq(AR5312_MISC_IRQ_AHB_PROC);
+	else if ((ar231x_misc_intrs & AR5312_ISR_UART0))
+		generic_handle_irq(AR5312_MISC_IRQ_UART0);
+	else if (ar231x_misc_intrs & AR5312_ISR_WD)
+		generic_handle_irq(AR5312_MISC_IRQ_WATCHDOG);
+	else
+		spurious_interrupt();
+}
+
+/* Enable the specified AR5312_MISC_IRQ interrupt */
+static void ar5312_misc_irq_unmask(struct irq_data *d)
+{
+	unsigned int imr;
+
+	imr = ar5312_rst_reg_read(AR5312_IMR);
+	imr |= 1 << (d->irq - AR231X_MISC_IRQ_BASE);
+	ar5312_rst_reg_write(AR5312_IMR, imr);
+}
+
+/* Disable the specified AR5312_MISC_IRQ interrupt */
+static void ar5312_misc_irq_mask(struct irq_data *d)
+{
+	unsigned int imr;
+
+	imr = ar5312_rst_reg_read(AR5312_IMR);
+	imr &= ~(1 << (d->irq - AR231X_MISC_IRQ_BASE));
+	ar5312_rst_reg_write(AR5312_IMR, imr);
+	ar5312_rst_reg_read(AR5312_IMR); /* flush write buffer */
+}
+
+static struct irq_chip ar5312_misc_irq_chip = {
+	.name		= "ar5312-misc",
+	.irq_unmask	= ar5312_misc_irq_unmask,
+	.irq_mask	= ar5312_misc_irq_mask,
+};
+
+static void ar5312_irq_dispatch(void)
+{
+	int pending = read_c0_status() & read_c0_cause();
+
+	if (pending & CAUSEF_IP2)
+		do_IRQ(AR5312_IRQ_WLAN0_INTRS);
+	else if (pending & CAUSEF_IP3)
+		do_IRQ(AR5312_IRQ_ENET0_INTRS);
+	else if (pending & CAUSEF_IP4)
+		do_IRQ(AR5312_IRQ_ENET1_INTRS);
+	else if (pending & CAUSEF_IP5)
+		do_IRQ(AR5312_IRQ_WLAN1_INTRS);
+	else if (pending & CAUSEF_IP6)
+		do_IRQ(AR5312_IRQ_MISC_INTRS);
+	else if (pending & CAUSEF_IP7)
+		do_IRQ(AR231X_IRQ_CPU_CLOCK);
+	else
+		spurious_interrupt();
+}
+
+void __init ar5312_arch_init_irq(void)
+{
+	int i;
+
+	ath25_irq_dispatch = ar5312_irq_dispatch;
+	for (i = 0; i < AR5312_MISC_IRQ_COUNT; i++) {
+		int irq = AR231X_MISC_IRQ_BASE + i;
+
+		irq_set_chip_and_handler(irq, &ar5312_misc_irq_chip,
+					 handle_level_irq);
+	}
+	setup_irq(AR5312_MISC_IRQ_AHB_PROC, &ar5312_ahb_err_interrupt);
+	irq_set_chained_handler(AR5312_IRQ_MISC_INTRS, ar5312_misc_irq_handler);
+}
+
+static void ar5312_device_reset_set(u32 mask)
+{
+	u32 val;
+
+	val = ar5312_rst_reg_read(AR5312_RESET);
+	ar5312_rst_reg_write(AR5312_RESET, val | mask);
+}
+
+static void ar5312_device_reset_clear(u32 mask)
+{
+	u32 val;
+
+	val = ar5312_rst_reg_read(AR5312_RESET);
+	ar5312_rst_reg_write(AR5312_RESET, val & ~mask);
+}
+
+static struct physmap_flash_data ar5312_flash_data = {
+	.width = 2,
+};
+
+static struct resource ar5312_flash_resource = {
+	.start = AR5312_FLASH,
+	.end = AR5312_FLASH + 0x800000 - 1,
+	.flags = IORESOURCE_MEM,
+};
+
+static struct ar231x_eth ar5312_eth0_data = {
+	.reset_set = ar5312_device_reset_set,
+	.reset_clear = ar5312_device_reset_clear,
+	.reset_mac = AR5312_RESET_ENET0,
+	.reset_phy = AR5312_RESET_EPHY0,
+};
+
+static struct ar231x_eth ar5312_eth1_data = {
+	.reset_set = ar5312_device_reset_set,
+	.reset_clear = ar5312_device_reset_clear,
+	.reset_mac = AR5312_RESET_ENET1,
+	.reset_phy = AR5312_RESET_EPHY1,
+};
+
+static struct platform_device ar5312_physmap_flash = {
+	.name = "physmap-flash",
+	.id = 0,
+	.dev.platform_data = &ar5312_flash_data,
+	.resource = &ar5312_flash_resource,
+	.num_resources = 1,
+};
+
+#ifdef CONFIG_LEDS_GPIO
+static struct gpio_led ar5312_leds[] = {
+	{ .name = "wlan", .gpio = 0, .active_low = 1, },
+};
+
+static const struct gpio_led_platform_data ar5312_led_data = {
+	.num_leds = ARRAY_SIZE(ar5312_leds),
+	.leds = (void *)ar5312_leds,
+};
+
+static struct platform_device ar5312_gpio_leds = {
+	.name = "leds-gpio",
+	.id = -1,
+	.dev.platform_data = (void *)&ar5312_led_data,
+};
+#endif
+
+/*
+ * NB: This mapping size is larger than the actual flash size,
+ * but this shouldn't be a problem here, because the flash
+ * will simply be mapped multiple times.
+ */
+static char __init *ar5312_flash_limit(void)
+{
+	void __iomem *flashctl_base;
+	u32 ctl;
+
+	flashctl_base = ioremap_nocache(AR5312_FLASHCTL_BASE,
+					AR5312_FLASHCTL_SIZE);
+
+	ctl = __raw_readl(flashctl_base + AR5312_FLASHCTL0);
+	ctl &= FLASHCTL_MW;
+
+	/* fixup flash width */
+	switch (ctl) {
+	case FLASHCTL_MW16:
+		ar5312_flash_data.width = 2;
+		break;
+	case FLASHCTL_MW8:
+	default:
+		ar5312_flash_data.width = 1;
+		break;
+	}
+
+	/*
+	 * Configure flash bank 0.
+	 * Assume 8M window size. Flash will be aliased if it's smaller
+	 */
+	ctl = FLASHCTL_E |
+		FLASHCTL_AC_8M |
+		FLASHCTL_RBLE |
+		(0x01 << FLASHCTL_IDCY_S) |
+		(0x07 << FLASHCTL_WST1_S) |
+		(0x07 << FLASHCTL_WST2_S) |
+		ctl;
+
+	__raw_writel(ctl, flashctl_base + AR5312_FLASHCTL0);
+
+	/* Disable other flash banks */
+	ctl = __raw_readl(flashctl_base + AR5312_FLASHCTL1);
+	ctl &= ~(FLASHCTL_E | FLASHCTL_AC);
+	__raw_writel(ctl, flashctl_base + AR5312_FLASHCTL1);
+	ctl = __raw_readl(flashctl_base + AR5312_FLASHCTL2);
+	ctl &= ~(FLASHCTL_E | FLASHCTL_AC);
+	__raw_writel(ctl, flashctl_base + AR5312_FLASHCTL2);
+
+	iounmap(flashctl_base);
+
+	return (char *)KSEG1ADDR(AR5312_FLASH + 0x800000);
+}
+
+void __init ar5312_init_devices(void)
+{
+	struct ath25_boarddata *config;
+	u8 *c;
+
+	/* Locate board/radio config data */
+	ath25_find_config(ar5312_flash_limit());
+	config = ath25_board.config;
+
+	/* AR2313 has CPU minor rev. 10 */
+	if ((current_cpu_data.processor_id & 0xff) == 0x0a)
+		ath25_soc = ATH25_SOC_AR2313;
+
+	/* AR2312 shares the same Silicon ID as AR5312 */
+	else if (config->flags & BD_ISCASPER)
+		ath25_soc = ATH25_SOC_AR2312;
+
+	/* Everything else is probably AR5312 or compatible */
+	else
+		ath25_soc = ATH25_SOC_AR5312;
+
+	platform_device_register(&ar5312_physmap_flash);
+
+#ifdef CONFIG_LEDS_GPIO
+	ar5312_leds[0].gpio = config->sys_led_gpio;
+	platform_device_register(&ar5312_gpio_leds);
+#endif
+
+	/* Fix up MAC addresses if necessary */
+	if (is_broadcast_ether_addr(config->enet0_mac))
+		ether_addr_copy(config->enet0_mac, config->enet1_mac);
+
+	/* If ENET0 and ENET1 have the same mac address,
+	 * increment the one from ENET1 */
+	if (ether_addr_equal(config->enet0_mac, config->enet1_mac)) {
+		c = config->enet1_mac + 5;
+		while ((c >= config->enet1_mac) && !(++(*c)))
+			c--;
+	}
+
+	switch (ath25_soc) {
+	case ATH25_SOC_AR5312:
+		ar5312_eth0_data.macaddr = config->enet0_mac;
+		ath25_add_ethernet(0, AR5312_ENET0, "eth0_mii",
+				   AR5312_ENET0_MII, AR5312_IRQ_ENET0_INTRS,
+				   &ar5312_eth0_data);
+
+		ar5312_eth1_data.macaddr = config->enet1_mac;
+		ath25_add_ethernet(1, AR5312_ENET1, "eth1_mii",
+				   AR5312_ENET1_MII, AR5312_IRQ_ENET1_INTRS,
+				   &ar5312_eth1_data);
+
+		if (!ath25_board.radio)
+			return;
+
+		if (!(config->flags & BD_WLAN0))
+			break;
+
+		ath25_add_wmac(0, AR5312_WLAN0, AR5312_IRQ_WLAN0_INTRS);
+		break;
+	/*
+	 * AR2312/3 ethernet uses the PHY of ENET0, but the MAC
+	 * of ENET1. Atheros calls it 'twisted' for a reason :)
+	 */
+	case ATH25_SOC_AR2312:
+	case ATH25_SOC_AR2313:
+		ar5312_eth1_data.reset_phy = ar5312_eth0_data.reset_phy;
+		ar5312_eth1_data.macaddr = config->enet0_mac;
+		ath25_add_ethernet(1, AR5312_ENET1, "eth0_mii",
+				   AR5312_ENET0_MII, AR5312_IRQ_ENET1_INTRS,
+				   &ar5312_eth1_data);
+
+		if (!ath25_board.radio)
+			return;
+		break;
+	default:
+		break;
+	}
+
+	if (config->flags & BD_WLAN1)
+		ath25_add_wmac(1, AR5312_WLAN1, AR5312_IRQ_WLAN1_INTRS);
+}
+
+static void ar5312_restart(char *command)
+{
+	/* reset the system */
+	local_irq_disable();
+	while (1)
+		ar5312_rst_reg_write(AR5312_RESET, AR5312_RESET_SYSTEM);
+}
+
+/*
+ * This table is indexed by bits 5..4 of the CLOCKCTL1 register
+ * to determine the predevisor value.
+ */
+static unsigned clockctl1_predivide_table[4] __initdata = { 1, 2, 4, 5 };
+
+static unsigned __init ar5312_cpu_frequency(void)
+{
+	unsigned int scratch;
+	unsigned int predivide_mask, predivide_shift;
+	unsigned int multiplier_mask, multiplier_shift;
+	unsigned int clock_ctl1, predivide_select, predivisor, multiplier;
+	unsigned int doubler_mask;
+	u16 devid;
+
+	/* Trust the bootrom's idea of cpu frequency. */
+	scratch = ar5312_rst_reg_read(AR5312_SCRATCH);
+	if (scratch)
+		return scratch;
+
+	devid = ar5312_rst_reg_read(AR5312_REV);
+	devid &= AR5312_REV_MAJ;
+	devid >>= AR5312_REV_MAJ_S;
+	if (devid == AR5312_REV_MAJ_AR2313) {
+		predivide_mask = AR2313_CLOCKCTL1_PREDIVIDE_MASK;
+		predivide_shift = AR2313_CLOCKCTL1_PREDIVIDE_SHIFT;
+		multiplier_mask = AR2313_CLOCKCTL1_MULTIPLIER_MASK;
+		multiplier_shift = AR2313_CLOCKCTL1_MULTIPLIER_SHIFT;
+		doubler_mask = AR2313_CLOCKCTL1_DOUBLER_MASK;
+	} else { /* AR5312 and AR2312 */
+		predivide_mask = AR5312_CLOCKCTL1_PREDIVIDE_MASK;
+		predivide_shift = AR5312_CLOCKCTL1_PREDIVIDE_SHIFT;
+		multiplier_mask = AR5312_CLOCKCTL1_MULTIPLIER_MASK;
+		multiplier_shift = AR5312_CLOCKCTL1_MULTIPLIER_SHIFT;
+		doubler_mask = AR5312_CLOCKCTL1_DOUBLER_MASK;
+	}
+
+	/*
+	 * Clocking is derived from a fixed 40MHz input clock.
+	 *
+	 *  cpu_freq = input_clock * MULT (where MULT is PLL multiplier)
+	 *  sys_freq = cpu_freq / 4	  (used for APB clock, serial,
+	 *				   flash, Timer, Watchdog Timer)
+	 *
+	 *  cnt_freq = cpu_freq / 2	   (use for CPU count/compare)
+	 *
+	 * So, for example, with a PLL multiplier of 5, we have
+	 *
+	 *  cpu_freq = 200MHz
+	 *  sys_freq = 50MHz
+	 *  cnt_freq = 100MHz
+	 *
+	 * We compute the CPU frequency, based on PLL settings.
+	 */
+
+	clock_ctl1 = ar5312_rst_reg_read(AR5312_CLOCKCTL1);
+	predivide_select = (clock_ctl1 & predivide_mask) >> predivide_shift;
+	predivisor = clockctl1_predivide_table[predivide_select];
+	multiplier = (clock_ctl1 & multiplier_mask) >> multiplier_shift;
+
+	if (clock_ctl1 & doubler_mask)
+		multiplier = multiplier << 1;
+
+	return (40000000 / predivisor) * multiplier;
+}
+
+static inline unsigned ar5312_sys_frequency(void)
+{
+	return ar5312_cpu_frequency() / 4;
+}
+
+void __init ar5312_plat_time_init(void)
+{
+	mips_hpt_frequency = ar5312_cpu_frequency() / 2;
+}
+
+void __init ar5312_plat_mem_setup(void)
+{
+	void __iomem *sdram_base;
+	u32 memsize, memcfg, bank0AC, bank1AC;
+	u32 devid;
+
+	/* Detect memory size */
+	sdram_base = ioremap_nocache(AR5312_SDRAMCTL_BASE,
+				     AR5312_SDRAMCTL_SIZE);
+	memcfg = __raw_readl(sdram_base + AR5312_MEM_CFG1);
+	bank0AC = (memcfg & MEM_CFG1_AC0) >> MEM_CFG1_AC0_S;
+	bank1AC = (memcfg & MEM_CFG1_AC1) >> MEM_CFG1_AC1_S;
+	memsize = (bank0AC ? (1 << (bank0AC+1)) : 0) +
+		  (bank1AC ? (1 << (bank1AC+1)) : 0);
+	memsize <<= 20;
+	add_memory_region(0, memsize, BOOT_MEM_RAM);
+	iounmap(sdram_base);
+
+	ar5312_rst_base = ioremap_nocache(AR5312_RST_BASE, AR5312_RST_SIZE);
+
+	devid = ar5312_rst_reg_read(AR5312_REV);
+	devid >>= AR5312_REV_WMAC_MIN_S;
+	devid &= AR5312_REV_CHIP;
+	ath25_board.devid = (u16)devid;
+
+	/* Clear any lingering AHB errors */
+	ar5312_rst_reg_read(AR5312_PROCADDR);
+	ar5312_rst_reg_read(AR5312_DMAADDR);
+	ar5312_rst_reg_write(AR5312_WD_CTRL, AR5312_WD_CTRL_IGNORE_EXPIRATION);
+
+	_machine_restart = ar5312_restart;
+}
+
+void __init ar5312_arch_init(void)
+{
+	ath25_serial_setup(AR5312_UART0, AR5312_MISC_IRQ_UART0,
+			   ar5312_sys_frequency());
+}
--- /dev/null
+++ b/arch/mips/ath25/ar2315.c
@@ -0,0 +1,428 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2012 Alexandros C. Couloumbis <alex@ozo.com>
+ */
+
+/*
+ * Platform devices for Atheros SoCs
+ */
+
+#include <generated/autoconf.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/delay.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <asm/bootinfo.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include <ath25_platform.h>
+#include <ar2315_regs.h>
+#include <ar231x.h>
+#include "devices.h"
+#include "ar2315.h"
+
+static void __iomem *ar2315_rst_base;
+
+static inline u32 ar2315_rst_reg_read(u32 reg)
+{
+	return __raw_readl(ar2315_rst_base + reg);
+}
+
+static inline void ar2315_rst_reg_write(u32 reg, u32 val)
+{
+	__raw_writel(val, ar2315_rst_base + reg);
+}
+
+static inline void ar2315_rst_reg_mask(u32 reg, u32 mask, u32 val)
+{
+	u32 ret = ar2315_rst_reg_read(reg);
+
+	ret &= ~mask;
+	ret |= val;
+	ar2315_rst_reg_write(reg, ret);
+}
+
+static irqreturn_t ar2315_ahb_err_handler(int cpl, void *dev_id)
+{
+	ar2315_rst_reg_write(AR2315_AHB_ERR0, AHB_ERROR_DET);
+	ar2315_rst_reg_read(AR2315_AHB_ERR1);
+
+	pr_emerg("AHB fatal error\n");
+	machine_restart("AHB error"); /* Catastrophic failure */
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction ar2315_ahb_err_interrupt  = {
+	.handler	= ar2315_ahb_err_handler,
+	.name		= "ar2315-ahb-error",
+};
+
+static void ar2315_misc_irq_handler(unsigned irq, struct irq_desc *desc)
+{
+	unsigned int misc_intr = ar2315_rst_reg_read(AR2315_ISR) &
+				 ar2315_rst_reg_read(AR2315_IMR);
+
+	if (misc_intr & AR2315_ISR_SPI)
+		generic_handle_irq(AR2315_MISC_IRQ_SPI);
+	else if (misc_intr & AR2315_ISR_TIMER)
+		generic_handle_irq(AR2315_MISC_IRQ_TIMER);
+	else if (misc_intr & AR2315_ISR_AHB)
+		generic_handle_irq(AR2315_MISC_IRQ_AHB);
+	else if (misc_intr & AR2315_ISR_GPIO) {
+		ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_GPIO);
+		generic_handle_irq(AR2315_MISC_IRQ_GPIO);
+	} else if (misc_intr & AR2315_ISR_UART0)
+		generic_handle_irq(AR2315_MISC_IRQ_UART0);
+	else if (misc_intr & AR2315_ISR_WD) {
+		ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_WD);
+		generic_handle_irq(AR2315_MISC_IRQ_WATCHDOG);
+	} else
+		spurious_interrupt();
+}
+
+static void ar2315_misc_irq_unmask(struct irq_data *d)
+{
+	unsigned int imr;
+
+	imr = ar2315_rst_reg_read(AR2315_IMR);
+	imr |= 1 << (d->irq - AR231X_MISC_IRQ_BASE);
+	ar2315_rst_reg_write(AR2315_IMR, imr);
+}
+
+static void ar2315_misc_irq_mask(struct irq_data *d)
+{
+	unsigned int imr;
+
+	imr = ar2315_rst_reg_read(AR2315_IMR);
+	imr &= ~(1 << (d->irq - AR231X_MISC_IRQ_BASE));
+	ar2315_rst_reg_write(AR2315_IMR, imr);
+}
+
+static struct irq_chip ar2315_misc_irq_chip = {
+	.name		= "ar2315-misc",
+	.irq_unmask	= ar2315_misc_irq_unmask,
+	.irq_mask	= ar2315_misc_irq_mask,
+};
+
+/*
+ * Called when an interrupt is received, this function
+ * determines exactly which interrupt it was, and it
+ * invokes the appropriate handler.
+ *
+ * Implicitly, we also define interrupt priority by
+ * choosing which to dispatch first.
+ */
+static void ar2315_irq_dispatch(void)
+{
+	int pending = read_c0_status() & read_c0_cause();
+
+	if (pending & CAUSEF_IP3)
+		do_IRQ(AR2315_IRQ_WLAN0_INTRS);
+	else if (pending & CAUSEF_IP4)
+		do_IRQ(AR2315_IRQ_ENET0_INTRS);
+	else if (pending & CAUSEF_IP2)
+		do_IRQ(AR2315_IRQ_MISC_INTRS);
+	else if (pending & CAUSEF_IP7)
+		do_IRQ(AR231X_IRQ_CPU_CLOCK);
+	else
+		spurious_interrupt();
+}
+
+void __init ar2315_arch_init_irq(void)
+{
+	int i;
+
+	ath25_irq_dispatch = ar2315_irq_dispatch;
+	for (i = 0; i < AR2315_MISC_IRQ_COUNT; i++) {
+		int irq = AR231X_MISC_IRQ_BASE + i;
+
+		irq_set_chip_and_handler(irq, &ar2315_misc_irq_chip,
+					 handle_level_irq);
+	}
+	setup_irq(AR2315_MISC_IRQ_AHB, &ar2315_ahb_err_interrupt);
+	irq_set_chained_handler(AR2315_IRQ_MISC_INTRS, ar2315_misc_irq_handler);
+}
+
+static void ar2315_device_reset_set(u32 mask)
+{
+	u32 val;
+
+	val = ar2315_rst_reg_read(AR2315_RESET);
+	ar2315_rst_reg_write(AR2315_RESET, val | mask);
+}
+
+static void ar2315_device_reset_clear(u32 mask)
+{
+	u32 val;
+
+	val = ar2315_rst_reg_read(AR2315_RESET);
+	ar2315_rst_reg_write(AR2315_RESET, val & ~mask);
+}
+
+static struct ar231x_eth ar2315_eth_data = {
+	.reset_set = ar2315_device_reset_set,
+	.reset_clear = ar2315_device_reset_clear,
+	.reset_mac = AR2315_RESET_ENET0,
+	.reset_phy = AR2315_RESET_EPHY0,
+};
+
+static struct resource ar2315_spiflash_res[] = {
+	{
+		.name = "spiflash_read",
+		.flags = IORESOURCE_MEM,
+		.start = AR2315_SPI_READ,
+		.end = AR2315_SPI_READ + 0x1000000 - 1,
+	},
+	{
+		.name = "spiflash_mmr",
+		.flags = IORESOURCE_MEM,
+		.start = AR2315_SPI_MMR,
+		.end = AR2315_SPI_MMR + 12 - 1,
+	},
+};
+
+static struct platform_device ar2315_spiflash = {
+	.id = 0,
+	.name = "ar2315-spiflash",
+	.resource = ar2315_spiflash_res,
+	.num_resources = ARRAY_SIZE(ar2315_spiflash_res)
+};
+
+static struct resource ar2315_wdt_res[] = {
+	{
+		.flags = IORESOURCE_MEM,
+		.start = AR2315_RST_BASE + AR2315_WD,
+		.end = AR2315_RST_BASE + AR2315_WD + 8 - 1,
+	},
+	{
+		.flags = IORESOURCE_IRQ,
+		.start = AR2315_MISC_IRQ_WATCHDOG,
+		.end = AR2315_MISC_IRQ_WATCHDOG,
+	}
+};
+
+static struct platform_device ar2315_wdt = {
+	.id = 0,
+	.name = "ar2315-wdt",
+	.resource = ar2315_wdt_res,
+	.num_resources = ARRAY_SIZE(ar2315_wdt_res)
+};
+
+/*
+ * NB: We use mapping size that is larger than the actual flash size,
+ * but this shouldn't be a problem here, because the flash will simply
+ * be mapped multiple times.
+ */
+static u8 __init *ar2315_flash_limit(void)
+{
+	return (u8 *)KSEG1ADDR(ar2315_spiflash_res[0].end + 1);
+}
+
+#ifdef CONFIG_LEDS_GPIO
+static struct gpio_led ar2315_leds[6];
+static struct gpio_led_platform_data ar2315_led_data = {
+	.leds = (void *)ar2315_leds,
+};
+
+static struct platform_device ar2315_gpio_leds = {
+	.name = "leds-gpio",
+	.id = -1,
+	.dev = {
+		.platform_data = (void *)&ar2315_led_data,
+	}
+};
+
+static void __init ar2315_init_gpio_leds(void)
+{
+	static char led_names[6][6];
+	int i, led = 0;
+
+	ar2315_led_data.num_leds = 0;
+	for (i = 1; i < 8; i++) {
+		if ((i == AR2315_RESET_GPIO) ||
+		    (i == ath25_board.config->reset_config_gpio))
+			continue;
+
+		if (i == ath25_board.config->sys_led_gpio)
+			strcpy(led_names[led], "wlan");
+		else
+			sprintf(led_names[led], "gpio%d", i);
+
+		ar2315_leds[led].name = led_names[led];
+		ar2315_leds[led].gpio = i;
+		ar2315_leds[led].active_low = 0;
+		led++;
+	}
+	ar2315_led_data.num_leds = led;
+	platform_device_register(&ar2315_gpio_leds);
+}
+#else
+static inline void ar2315_init_gpio_leds(void)
+{
+}
+#endif
+
+void __init ar2315_init_devices(void)
+{
+	/* Find board configuration */
+	ath25_find_config(ar2315_flash_limit());
+	ar2315_eth_data.macaddr = ath25_board.config->enet0_mac;
+
+	ar2315_init_gpio_leds();
+	platform_device_register(&ar2315_wdt);
+	platform_device_register(&ar2315_spiflash);
+	ath25_add_ethernet(0, AR2315_ENET0, "eth0_mii", AR2315_ENET0_MII,
+			   AR2315_IRQ_ENET0_INTRS, &ar2315_eth_data);
+	ath25_add_wmac(0, AR2315_WLAN0, AR2315_IRQ_WLAN0_INTRS);
+}
+
+static void ar2315_restart(char *command)
+{
+	void (*mips_reset_vec)(void) = (void *)0xbfc00000;
+
+	local_irq_disable();
+
+	/* try reset the system via reset control */
+	ar2315_rst_reg_write(AR2315_COLD_RESET, AR2317_RESET_SYSTEM);
+
+	/* Cold reset does not work on the AR2315/6, use the GPIO reset bits
+	 * a workaround. Give it some time to attempt a gpio based hardware
+	 * reset (atheros reference design workaround) */
+	gpio_request_one(AR2315_RESET_GPIO, GPIOF_OUT_INIT_LOW, "Reset");
+	mdelay(100);
+
+	/* Some boards (e.g. Senao EOC-2610) don't implement the reset logic
+	 * workaround. Attempt to jump to the mips reset location -
+	 * the boot loader itself might be able to recover the system */
+	mips_reset_vec();
+}
+
+/*
+ * This table is indexed by bits 5..4 of the CLOCKCTL1 register
+ * to determine the predevisor value.
+ */
+static int clockctl1_predivide_table[4] __initdata = { 1, 2, 4, 5 };
+static int pllc_divide_table[5] __initdata = { 2, 3, 4, 6, 3 };
+
+static unsigned __init ar2315_sys_clk(u32 clock_ctl)
+{
+	unsigned int pllc_ctrl, cpu_div;
+	unsigned int pllc_out, refdiv, fdiv, divby2;
+	unsigned int clk_div;
+
+	pllc_ctrl = ar2315_rst_reg_read(AR2315_PLLC_CTL);
+	refdiv = (pllc_ctrl & PLLC_REF_DIV_M) >> PLLC_REF_DIV_S;
+	refdiv = clockctl1_predivide_table[refdiv];
+	fdiv = (pllc_ctrl & PLLC_FDBACK_DIV_M) >> PLLC_FDBACK_DIV_S;
+	divby2 = (pllc_ctrl & PLLC_ADD_FDBACK_DIV_M) >> PLLC_ADD_FDBACK_DIV_S;
+	divby2 += 1;
+	pllc_out = (40000000/refdiv)*(2*divby2)*fdiv;
+
+	/* clkm input selected */
+	switch (clock_ctl & CPUCLK_CLK_SEL_M) {
+	case 0:
+	case 1:
+		clk_div = pllc_divide_table[(pllc_ctrl & PLLC_CLKM_DIV_M) >>
+			  PLLC_CLKM_DIV_S];
+		break;
+	case 2:
+		clk_div = pllc_divide_table[(pllc_ctrl & PLLC_CLKC_DIV_M) >>
+			  PLLC_CLKC_DIV_S];
+		break;
+	default:
+		pllc_out = 40000000;
+		clk_div = 1;
+		break;
+	}
+
+	cpu_div = (clock_ctl & CPUCLK_CLK_DIV_M) >> CPUCLK_CLK_DIV_S;
+	cpu_div = cpu_div * 2 ?: 1;
+
+	return pllc_out / (clk_div * cpu_div);
+}
+
+static inline unsigned ar2315_cpu_frequency(void)
+{
+	return ar2315_sys_clk(ar2315_rst_reg_read(AR2315_CPUCLK));
+}
+
+static inline unsigned ar2315_apb_frequency(void)
+{
+	return ar2315_sys_clk(ar2315_rst_reg_read(AR2315_AMBACLK));
+}
+
+void __init ar2315_plat_time_init(void)
+{
+	mips_hpt_frequency = ar2315_cpu_frequency() / 2;
+}
+
+void __init ar2315_plat_mem_setup(void)
+{
+	void __iomem *sdram_base;
+	u32 memsize, memcfg;
+	u32 devid;
+	u32 config;
+
+	sdram_base = ioremap_nocache(AR2315_SDRAMCTL_BASE,
+				     AR2315_SDRAMCTL_SIZE);
+	memcfg = __raw_readl(sdram_base + AR2315_MEM_CFG);
+	memsize   = 1 + ((memcfg & SDRAM_DATA_WIDTH_M) >> SDRAM_DATA_WIDTH_S);
+	memsize <<= 1 + ((memcfg & SDRAM_COL_WIDTH_M) >> SDRAM_COL_WIDTH_S);
+	memsize <<= 1 + ((memcfg & SDRAM_ROW_WIDTH_M) >> SDRAM_ROW_WIDTH_S);
+	memsize <<= 3;
+	add_memory_region(0, memsize, BOOT_MEM_RAM);
+	iounmap(sdram_base);
+
+	ar2315_rst_base = ioremap_nocache(AR2315_RST_BASE, AR2315_RST_SIZE);
+
+	/* Detect the hardware based on the device ID */
+	devid = ar2315_rst_reg_read(AR2315_SREV) & AR2315_REV_CHIP;
+	switch (devid) {
+	case 0x91:	/* Need to check */
+		ath25_soc = ATH25_SOC_AR2318;
+		break;
+	case 0x90:
+		ath25_soc = ATH25_SOC_AR2317;
+		break;
+	case 0x87:
+		ath25_soc = ATH25_SOC_AR2316;
+		break;
+	case 0x86:
+	default:
+		ath25_soc = ATH25_SOC_AR2315;
+		break;
+	}
+	ath25_board.devid = devid;
+
+	/* Clear any lingering AHB errors */
+	config = read_c0_config();
+	write_c0_config(config & ~0x3);
+	ar2315_rst_reg_write(AR2315_AHB_ERR0, AHB_ERROR_DET);
+	ar2315_rst_reg_read(AR2315_AHB_ERR1);
+	ar2315_rst_reg_write(AR2315_WDC, AR2315_WDC_IGNORE_EXPIRATION);
+
+	_machine_restart = ar2315_restart;
+}
+
+void __init ar2315_arch_init(void)
+{
+	ath25_serial_setup(AR2315_UART0, AR2315_MISC_IRQ_UART0,
+			   ar2315_apb_frequency());
+}
--- /dev/null
+++ b/arch/mips/ath25/ar2315.h
@@ -0,0 +1,36 @@
+#ifndef __AR2315_H
+#define __AR2315_H
+
+#ifdef CONFIG_SOC_AR2315
+
+void ar2315_arch_init_irq(void);
+void ar2315_init_devices(void);
+void ar2315_plat_time_init(void);
+void ar2315_plat_mem_setup(void);
+void ar2315_arch_init(void);
+
+#else
+
+static inline void ar2315_arch_init_irq(void)
+{
+}
+
+static inline void ar2315_init_devices(void)
+{
+}
+
+static inline void ar2315_plat_time_init(void)
+{
+}
+
+static inline void ar2315_plat_mem_setup(void)
+{
+}
+
+static inline void ar2315_arch_init(void)
+{
+}
+
+#endif
+
+#endif
--- /dev/null
+++ b/arch/mips/ath25/ar5312.h
@@ -0,0 +1,36 @@
+#ifndef __AR5312_H
+#define __AR5312_H
+
+#ifdef CONFIG_SOC_AR5312
+
+void ar5312_arch_init_irq(void);
+void ar5312_init_devices(void);
+void ar5312_plat_time_init(void);
+void ar5312_plat_mem_setup(void);
+void ar5312_arch_init(void);
+
+#else
+
+static inline void ar5312_arch_init_irq(void)
+{
+}
+
+static inline void ar5312_init_devices(void)
+{
+}
+
+static inline void ar5312_plat_time_init(void)
+{
+}
+
+static inline void ar5312_plat_mem_setup(void)
+{
+}
+
+static inline void ar5312_arch_init(void)
+{
+}
+
+#endif
+
+#endif
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/ar231x.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_MACH_ATH25_AR231X_H
+#define __ASM_MACH_ATH25_AR231X_H
+
+#include <linux/types.h>
+#include <linux/io.h>
+
+#define AR231X_MISC_IRQ_BASE		0x20
+#define AR231X_GPIO_IRQ_BASE		0x30
+
+/* Software's idea of interrupts handled by "CPU Interrupt Controller" */
+#define AR231X_IRQ_CPU_CLOCK	(MIPS_CPU_IRQ_BASE+7) /* C0_CAUSE: 0x8000 */
+
+#endif	/* __ASM_MACH_ATH25_AR231X_H */
--- /dev/null
+++ b/arch/mips/ath25/devices.h
@@ -0,0 +1,39 @@
+#ifndef __ATH25_DEVICES_H
+#define __ATH25_DEVICES_H
+
+enum ath25_soc_type {
+	/* handled by ar5312.c */
+	ATH25_SOC_AR2312,
+	ATH25_SOC_AR2313,
+	ATH25_SOC_AR5312,
+
+	/* handled by ar2315.c */
+	ATH25_SOC_AR2315,
+	ATH25_SOC_AR2316,
+	ATH25_SOC_AR2317,
+	ATH25_SOC_AR2318,
+
+	ATH25_SOC_UNKNOWN
+};
+
+extern enum ath25_soc_type ath25_soc;
+extern struct ar231x_board_config ath25_board;
+extern void (*ath25_irq_dispatch)(void);
+
+int ath25_find_config(u8 *flash_limit);
+int ath25_add_ethernet(int nr, u32 base, const char *mii_name, u32 mii_base,
+		       int irq, void *pdata);
+void ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk);
+int ath25_add_wmac(int nr, u32 base, int irq);
+
+static inline bool is_ar2315(void)
+{
+	return (current_cpu_data.cputype == CPU_4KEC);
+}
+
+static inline bool is_ar5312(void)
+{
+	return !is_ar2315();
+}
+
+#endif
--- /dev/null
+++ b/arch/mips/ath25/devices.c
@@ -0,0 +1,192 @@
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/platform_device.h>
+#include <asm/bootinfo.h>
+
+#include <ath25_platform.h>
+#include <ar231x.h>
+#include "devices.h"
+#include "ar5312.h"
+#include "ar2315.h"
+
+struct ar231x_board_config ath25_board;
+enum ath25_soc_type ath25_soc = ATH25_SOC_UNKNOWN;
+
+static struct resource ath25_eth0_res[] = {
+	{
+		.name = "eth0_membase",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "eth0_mii",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "eth0_irq",
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct resource ath25_eth1_res[] = {
+	{
+		.name = "eth1_membase",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "eth1_mii",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "eth1_irq",
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device ath25_eth[] = {
+	{
+		.id = 0,
+		.name = "ar231x-eth",
+		.resource = ath25_eth0_res,
+		.num_resources = ARRAY_SIZE(ath25_eth0_res)
+	},
+	{
+		.id = 1,
+		.name = "ar231x-eth",
+		.resource = ath25_eth1_res,
+		.num_resources = ARRAY_SIZE(ath25_eth1_res)
+	}
+};
+
+static struct resource ath25_wmac0_res[] = {
+	{
+		.name = "wmac0_membase",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "wmac0_irq",
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct resource ath25_wmac1_res[] = {
+	{
+		.name = "wmac1_membase",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "wmac1_irq",
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device ath25_wmac[] = {
+	{
+		.id = 0,
+		.name = "ar231x-wmac",
+		.resource = ath25_wmac0_res,
+		.num_resources = ARRAY_SIZE(ath25_wmac0_res),
+		.dev.platform_data = &ath25_board,
+	},
+	{
+		.id = 1,
+		.name = "ar231x-wmac",
+		.resource = ath25_wmac1_res,
+		.num_resources = ARRAY_SIZE(ath25_wmac1_res),
+		.dev.platform_data = &ath25_board,
+	},
+};
+
+static const char * const soc_type_strings[] = {
+	[ATH25_SOC_AR5312] = "Atheros AR5312",
+	[ATH25_SOC_AR2312] = "Atheros AR2312",
+	[ATH25_SOC_AR2313] = "Atheros AR2313",
+	[ATH25_SOC_AR2315] = "Atheros AR2315",
+	[ATH25_SOC_AR2316] = "Atheros AR2316",
+	[ATH25_SOC_AR2317] = "Atheros AR2317",
+	[ATH25_SOC_AR2318] = "Atheros AR2318",
+	[ATH25_SOC_UNKNOWN] = "Atheros (unknown)",
+};
+
+const char *get_system_type(void)
+{
+	if ((ath25_soc >= ARRAY_SIZE(soc_type_strings)) ||
+	    !soc_type_strings[ath25_soc])
+		return soc_type_strings[ATH25_SOC_UNKNOWN];
+	return soc_type_strings[ath25_soc];
+}
+
+int __init ath25_add_ethernet(int nr, u32 base, const char *mii_name,
+			      u32 mii_base, int irq, void *pdata)
+{
+	struct resource *res;
+
+	ath25_eth[nr].dev.platform_data = pdata;
+	res = &ath25_eth[nr].resource[0];
+	res->start = base;
+	res->end = base + 0x2000 - 1;
+	res++;
+	res->name = mii_name;
+	res->start = mii_base;
+	res->end = mii_base + 8 - 1;
+	res++;
+	res->start = irq;
+	res->end = irq;
+	return platform_device_register(&ath25_eth[nr]);
+}
+
+void __init ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk)
+{
+	struct uart_port s;
+
+	memset(&s, 0, sizeof(s));
+
+	s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP;
+	s.iotype = UPIO_MEM32;
+	s.irq = irq;
+	s.regshift = 2;
+	s.mapbase = mapbase;
+	s.uartclk = uartclk;
+
+	early_serial_setup(&s);
+}
+
+int __init ath25_add_wmac(int nr, u32 base, int irq)
+{
+	struct resource *res;
+
+	ath25_wmac[nr].dev.platform_data = &ath25_board;
+	res = &ath25_wmac[nr].resource[0];
+	res->start = base;
+	res->end = base + 0x10000 - 1;
+	res++;
+	res->start = irq;
+	res->end = irq;
+	return platform_device_register(&ath25_wmac[nr]);
+}
+
+static int __init ath25_register_devices(void)
+{
+	if (is_ar5312())
+		ar5312_init_devices();
+	else
+		ar2315_init_devices();
+
+	return 0;
+}
+
+device_initcall(ath25_register_devices);
+
+static int __init ath25_arch_init(void)
+{
+	if (is_ar5312())
+		ar5312_arch_init();
+	else
+		ar2315_arch_init();
+
+	return 0;
+}
+
+arch_initcall(ath25_arch_init);