path: root/target/linux/atheros/patches-3.10/100-board.patch

--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -138,6 +138,19 @@ config BCM63XX
 	help
 	 Support for BCM63XX based boards
 
+config ATHEROS_AR231X
+	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 MIPS_COBALT
 	bool "Cobalt Server"
 	select CEVT_R4K
@@ -838,6 +851,7 @@ config NLM_XLP_BOARD
 
 endchoice
 
+source "arch/mips/ar231x/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
@@ -6,6 +6,7 @@ platforms += ath79
 platforms += bcm47xx
 platforms += bcm63xx
 platforms += cavium-octeon
+platforms += ar231x
 platforms += cobalt
 platforms += dec
 platforms += emma
--- /dev/null
+++ b/arch/mips/ar231x/Platform
@@ -0,0 +1,6 @@
+#
+# Atheros AR5312/AR2312 WiSoC
+#
+platform-$(CONFIG_ATHEROS_AR231X)          += ar231x/
+cflags-$(CONFIG_ATHEROS_AR231X)        += -I$(srctree)/arch/mips/include/asm/mach-ar231x
+load-$(CONFIG_ATHEROS_AR231X)          += 0xffffffff80041000
--- /dev/null
+++ b/arch/mips/ar231x/Kconfig
@@ -0,0 +1,16 @@
+config ATHEROS_AR5312
+	bool "Atheros 5312/2312+ support"
+	depends on ATHEROS_AR231X
+	default y
+
+config ATHEROS_AR2315
+	bool "Atheros 2315+ support"
+	depends on ATHEROS_AR231X
+	select DMA_NONCOHERENT
+	select CEVT_R4K
+	select CSRC_R4K
+	select IRQ_CPU
+	select SYS_HAS_CPU_MIPS32_R1
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select SYS_SUPPORTS_BIG_ENDIAN
+	default y
--- /dev/null
+++ b/arch/mips/ar231x/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-$(CONFIG_ATHEROS_AR5312) += ar5312.o
+obj-$(CONFIG_ATHEROS_AR2315) += ar2315.o
--- /dev/null
+++ b/arch/mips/ar231x/board.c
@@ -0,0 +1,261 @@
+/*
+ * 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 <ar231x_platform.h>
+#include "devices.h"
+#include "ar5312.h"
+#include "ar2315.h"
+
+void (*ar231x_irq_dispatch)(void);
+
+static inline bool
+check_radio_magic(u8 *addr)
+{
+	addr += 0x7a; /* offset for flash magic */
+	if ((addr[0] == 0x5a) && (addr[1] == 0xa5))
+		return 1;
+
+	return 0;
+}
+
+static inline bool
+check_board_data(u8 *flash_limit, u8 *addr, bool broken)
+{
+	/* config magic found */
+	if (*((u32 *)addr) == AR531X_BD_MAGIC)
+		return 1;
+
+	if (!broken)
+		return 0;
+
+	if (check_radio_magic(addr + 0xf8))
+		ar231x_board.radio = addr + 0xf8;
+	if ((addr < flash_limit + 0x10000) &&
+	     check_radio_magic(addr + 0x10000))
+		ar231x_board.radio = addr + 0x10000;
+
+	if (ar231x_board.radio) {
+		/* broken board data detected, use radio data to find the
+		 * offset, user will fix this */
+		return 1;
+	}
+	return 0;
+}
+
+static u8 *
+find_board_config(u8 *flash_limit, bool broken)
+{
+	u8 *addr;
+	int found = 0;
+
+	for (addr = flash_limit - 0x1000;
+		addr >= flash_limit - 0x30000;
+		addr -= 0x1000) {
+
+		if (check_board_data(flash_limit, addr, broken)) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (!found)
+		addr = NULL;
+
+	return addr;
+}
+
+static u8 *
+find_radio_config(u8 *flash_limit, u8 *board_config)
+{
+	int found;
+	u8 *radio_config;
+
+	/*
+	 * 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.
+	 */
+	found = 0;
+	for (radio_config = board_config + 0x1000;
+	     (radio_config < flash_limit);
+	     radio_config += 0x1000) {
+		if ((*(u32 *)radio_config != 0xffffffff) &&
+		    check_radio_magic(radio_config)) {
+			found = 1;
+			break;
+		}
+	}
+
+	/* AR2316 relocates radio config to new location */
+	if (!found) {
+		for (radio_config = board_config + 0xf8;
+		     (radio_config < flash_limit - 0x1000 + 0xf8);
+		     radio_config += 0x1000) {
+			if ((*(u32 *)radio_config != 0xffffffff) &&
+			    check_radio_magic(radio_config)) {
+				found = 1;
+				break;
+			}
+		}
+	}
+
+	if (!found) {
+		pr_warn("WARNING: Could not find Radio Configuration data\n");
+		radio_config = 0;
+	}
+
+	return radio_config;
+}
+
+int __init
+ar231x_find_config(u8 *flash_limit)
+{
+	struct ar231x_boarddata *config;
+	unsigned int rcfg_size;
+	int broken_boarddata = 0;
+	u8 *bcfg, *rcfg;
+	u8 *board_data;
+	u8 *radio_data;
+	u8 *mac_addr;
+	u32 offset;
+
+	ar231x_board.config = NULL;
+	ar231x_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);
+	ar231x_board.config = (struct ar231x_boarddata *)board_data;
+	memcpy(board_data, bcfg, 0x100);
+	if (broken_boarddata) {
+		pr_warn("WARNING: broken board data detected\n");
+		config = ar231x_board.config;
+		if (!memcmp(config->enet0_mac, "\x00\x00\x00\x00\x00\x00", 6)) {
+			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 (ar231x_board.radio)
+		rcfg = (u8 *)ar231x_board.radio;
+	else
+		rcfg = find_radio_config(flash_limit, bcfg);
+
+	if (!rcfg)
+		return -ENODEV;
+
+	radio_data = board_data + 0x100 + ((rcfg - bcfg) & 0xfff);
+	ar231x_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");
+		memcpy(mac_addr, ar231x_board.config->wlan0_mac, ETH_ALEN);
+	}
+
+	return 0;
+}
+
+static void
+ar231x_halt(void)
+{
+	local_irq_disable();
+	while (1)
+		;
+}
+
+void __init
+plat_mem_setup(void)
+{
+	_machine_halt = ar231x_halt;
+	pm_power_off = ar231x_halt;
+
+	ar5312_plat_setup();
+	ar2315_plat_setup();
+
+	/* Disable data watchpoints */
+	write_c0_watchlo0(0);
+}
+
+
+asmlinkage void
+plat_irq_dispatch(void)
+{
+	ar231x_irq_dispatch();
+}
+
+void __init
+plat_time_init(void)
+{
+	ar5312_time_init();
+	ar2315_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 */
+	ar5312_irq_init();
+	ar2315_irq_init();
+}
+
+
--- /dev/null
+++ b/arch/mips/ar231x/prom.c
@@ -0,0 +1,37 @@
+/*
+ * 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 ar531x
+ */
+
+#include <linux/init.h>
+#include <generated/autoconf.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+
+#include <asm/bootinfo.h>
+#include <asm/addrspace.h>
+#include "ar5312.h"
+#include "ar2315.h"
+
+void __init prom_init(void)
+{
+	ar5312_prom_init();
+	ar2315_prom_init();
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar231x/ar231x_platform.h
@@ -0,0 +1,84 @@
+#ifndef __AR531X_PLATFORM_H
+#define __AR531X_PLATFORM_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 ar231x_boarddata {
+	u32 magic;                   /* board data is valid */
+#define AR531X_BD_MAGIC 0x35333131   /* "5311", for all 531x 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[6];
+	u8  enet0_mac[6];
+	u8  enet1_mac[6];
+
+	u16 pci_id;                  /* Pseudo PCIID for common code */
+	u16 mem_cap;                 /* cap bank1 in MB */
+
+	/* version 3 */
+	u8  wlan1_mac[6];            /* (ar5212) */
+};
+
+#define BOARD_CONFIG_BUFSZ		0x1000
+
+/*
+ * Platform device information for the Wireless MAC
+ */
+struct ar231x_board_config {
+	u16 devid;
+
+	/* board config data */
+	struct ar231x_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;
+	u32 phy_base;
+	struct ar231x_board_config *config;
+	char *macaddr;
+};
+
+#endif /* __AR531X_PLATFORM_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar231x/cpu-feature-overrides.h
@@ -0,0 +1,84 @@
+/*
+ *  Atheros 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_ATHEROS_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_ATHEROS_CPU_FEATURE_OVERRIDES_H
+
+/*
+ * The ATHEROS 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_watch		? */
+/* #define cpu_has_divec		? */
+/* #define cpu_has_vce			? */
+/* #define cpu_has_cache_cdex_p		? */
+/* #define cpu_has_cache_cdex_s		? */
+/* #define cpu_has_prefetch		? */
+/* #define cpu_has_mcheck		? */
+#define cpu_has_ejtag			1
+
+#if !defined(CONFIG_ATHEROS_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_vtag_icache		? */
+/* #define cpu_has_dc_aliases		? */
+/* #define cpu_has_ic_fills_f_dc	? */
+/* #define cpu_has_pindexed_dcache	? */
+
+/* #define cpu_icache_snoops_remote_store	? */
+
+#define cpu_has_mips32r1		1
+
+#if !defined(CONFIG_ATHEROS_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_nofpuex		? */
+#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
+
+/* #define cpu_has_inclusive_pcaches	? */
+
+/* #define cpu_dcache_line_size()	? */
+/* #define cpu_icache_line_size()	? */
+
+#endif /* __ASM_MACH_ATHEROS_CPU_FEATURE_OVERRIDES_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar231x/dma-coherence.h
@@ -0,0 +1,79 @@
+/*
+ * 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_GENERIC_DMA_COHERENCE_H
+#define __ASM_MACH_GENERIC_DMA_COHERENCE_H
+
+#define PCI_DMA_OFFSET	0x20000000
+
+#include <linux/device.h>
+
+static inline dma_addr_t ar231x_dev_offset(struct device *dev)
+{
+#ifdef CONFIG_PCI
+	extern struct bus_type pci_bus_type;
+
+	if (dev && dev->bus == &pci_bus_type)
+		return PCI_DMA_OFFSET;
+	else
+#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) + ar231x_dev_offset(dev);
+}
+
+static inline dma_addr_t
+plat_map_dma_mem_page(struct device *dev, struct page *page)
+{
+	return page_to_phys(page) + ar231x_dev_offset(dev);
+}
+
+static inline unsigned long
+plat_dma_addr_to_phys(struct device *dev, dma_addr_t dma_addr)
+{
+	return dma_addr - ar231x_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)
+{
+	return;
+}
+
+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_GENERIC_DMA_COHERENCE_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar231x/gpio.h
@@ -0,0 +1,30 @@
+#ifndef _ATHEROS_GPIO_H_
+#define _ATHEROS_GPIO_H_
+
+#include <ar231x.h>
+
+#define gpio_get_value __gpio_get_value
+#define gpio_set_value __gpio_set_value
+#define gpio_cansleep __gpio_cansleep
+
+/*
+ * Wrappers for the generic GPIO layer
+ */
+
+/* not sure if these are used? */
+
+/* Returns IRQ to attach for gpio.  Unchecked function */
+static inline int gpio_to_irq(unsigned gpio)
+{
+	return AR531X_GPIO_IRQ(gpio);
+}
+
+/* Returns gpio for IRQ attached.  Unchecked function */
+static inline int irq_to_gpio(unsigned irq)
+{
+	return irq - AR531X_GPIO_IRQ(0);
+}
+
+#include <asm-generic/gpio.h> /* cansleep wrappers */
+
+#endif
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar231x/reset.h
@@ -0,0 +1,6 @@
+#ifndef __AR531X_RESET_H
+#define __AR531X_RESET_H
+
+void ar531x_disable_reset_button(void);
+
+#endif /* __AR531X_RESET_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar231x/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_MIPS_MACH_ATHEROS_WAR_H
+#define __ASM_MIPS_MACH_ATHEROS_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_MIPS_MACH_ATHEROS_WAR_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar231x/ar2315_regs.h
@@ -0,0 +1,597 @@
+/*
+ * 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 __AR2315_REG_H
+#define __AR2315_REG_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 */
+
+/*
+ * Address map
+ */
+#define AR2315_SPI_READ         0x08000000      /* SPI FLASH */
+#define AR2315_WLAN0            0x10000000      /* Wireless MMR */
+#define AR2315_PCI              0x10100000      /* PCI MMR */
+#define AR2315_SDRAMCTL         0x10300000      /* SDRAM MMR */
+#define AR2315_LOCAL            0x10400000      /* LOCAL BUS MMR */
+#define AR2315_ENET0            0x10500000      /* ETHERNET MMR */
+#define AR2315_DSLBASE          0x11000000      /* RESET CONTROL MMR */
+#define AR2315_UART0            0x11100003      /* UART MMR */
+#define AR2315_SPI_MMR          0x11300000      /* SPI FLASH MMR */
+#define AR2315_PCIEXT           0x80000000      /* pci external */
+
+/*
+ * Reset Register
+ */
+#define AR2315_COLD_RESET       (AR2315_DSLBASE + 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
+
+
+#define AR2315_RESET            (AR2315_DSLBASE + 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      (AR2315_DSLBASE + 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       (AR2315_DSLBASE + 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          (AR2315_DSLBASE + 0x0010)
+
+#define AR2315_NMI_EN  1
+
+/*
+ * Revision Register - Initial value is 0x3010 (WMAC 3.0, AR531X 1.0).
+ */
+#define AR2315_SREV             (AR2315_DSLBASE + 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           (AR2315_DSLBASE + 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              (AR2315_DSLBASE + 0x0020)
+#define AR2315_IMR              (AR2315_DSLBASE + 0x0024)
+#define AR2315_GISR             (AR2315_DSLBASE + 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
+
+/*
+ * Interrupt routing from IO to the processor IP bits
+ * Define our inter mask and level
+ */
+#define AR2315_INTR_MISCIO      SR_IBIT3
+#define AR2315_INTR_WLAN0       SR_IBIT4
+#define AR2315_INTR_ENET0       SR_IBIT5
+#define AR2315_INTR_LOCALPCI    SR_IBIT6
+#define AR2315_INTR_WMACPOLL    SR_IBIT7
+#define AR2315_INTR_COMPARE     SR_IBIT8
+
+/*
+ * Timers
+ */
+#define AR2315_TIMER            (AR2315_DSLBASE + 0x0030)
+#define AR2315_RELOAD           (AR2315_DSLBASE + 0x0034)
+#define AR2315_WD               (AR2315_DSLBASE + 0x0038)
+#define AR2315_WDC              (AR2315_DSLBASE + 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         (AR2315_DSLBASE + 0x0048)
+#define AR2315_PERFCNT1         (AR2315_DSLBASE + 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         (AR2315_DSLBASE + 0x0050)  /* error  */
+#define AR2315_AHB_ERR1         (AR2315_DSLBASE + 0x0054)  /* haddr  */
+#define AR2315_AHB_ERR2         (AR2315_DSLBASE + 0x0058)  /* hwdata */
+#define AR2315_AHB_ERR3         (AR2315_DSLBASE + 0x005c)  /* hrdata */
+#define AR2315_AHB_ERR4         (AR2315_DSLBASE + 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         (AR2315_DSLBASE + 0x0064)
+#define AR2315_PLLV_CTL         (AR2315_DSLBASE + 0x0068)
+#define AR2315_CPUCLK           (AR2315_DSLBASE + 0x006c)
+#define AR2315_AMBACLK          (AR2315_DSLBASE + 0x0070)
+#define AR2315_SYNCCLK          (AR2315_DSLBASE + 0x0074)
+#define AR2315_DSL_SLEEP_CTL    (AR2315_DSLBASE + 0x0080)
+#define AR2315_DSL_SLEEP_DUR    (AR2315_DSLBASE + 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
+ */
+#define AR2315_GPIO_DI          (AR2315_DSLBASE + 0x0088)
+#define AR2315_GPIO_DO          (AR2315_DSLBASE + 0x0090)
+#define AR2315_GPIO_CR          (AR2315_DSLBASE + 0x0098)
+#define AR2315_GPIO_INT         (AR2315_DSLBASE + 0x00a0)
+
+#define AR2315_GPIO_CR_M(x)                (1 << (x))       /* mask for i/o */
+#define AR2315_GPIO_CR_O(x)                (1 << (x))       /* output */
+#define AR2315_GPIO_CR_I(x)                (0)              /* input */
+
+#define AR2315_GPIO_INT_S(x)	(x)             /* interrupt enable */
+#define AR2315_GPIO_INT_M	(0x3F)          /* mask for int */
+#define AR2315_GPIO_INT_LVL(x)	((x) << 6)      /* interrupt level */
+#define AR2315_GPIO_INT_LVL_M	((0x3) << 6)    /* mask for int level */
+
+#define AR2315_GPIO_INT_MAX_Y		1   /* Maximum value of Y for
+					     * AR5313_GPIO_INT_* macros */
+#define AR2315_GPIO_INT_LVL_OFF		0   /* Triggerring off */
+#define AR2315_GPIO_INT_LVL_LOW		1   /* Low Level Triggered */
+#define AR2315_GPIO_INT_LVL_HIGH	2   /* High Level Triggered */
+#define AR2315_GPIO_INT_LVL_EDGE	3   /* Edge Triggered */
+
+#define AR2315_RESET_GPIO       5
+#define AR2315_NUM_GPIO         22
+
+/*
+ *  PCI Clock Control
+ */
+#define AR2315_PCICLK           (AR2315_DSLBASE + 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              (AR2315_DSLBASE + 0x00b0)
+#define OCR_GPIO0_IRIN              0x0040
+#define OCR_GPIO1_IROUT             0x0080
+#define OCR_GPIO3_RXCLR             0x0200
+
+/*
+ *  General Clock Control
+ */
+
+#define AR2315_MISCCLK          (AR2315_DSLBASE + 0x00b4)
+#define MISCCLK_PLLBYPASS_EN        0x00000001
+#define MISCCLK_PROCREFCLK          0x00000002
+
+/*
+ * SDRAM Controller
+ *   - No read or write buffers are included.
+ */
+#define AR2315_MEM_CFG          (AR2315_SDRAMCTL + 0x00)
+#define AR2315_MEM_CTRL         (AR2315_SDRAMCTL + 0x0c)
+#define AR2315_MEM_REF          (AR2315_SDRAMCTL + 0x10)
+
+#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
+
+/*
+ * PCI Bus Interface Registers
+ */
+#define AR2315_PCI_1MS_REG      (AR2315_PCI + 0x0008)
+#define AR2315_PCI_1MS_MASK     0x3FFFF       /* # of AHB clk cycles in 1ms */
+
+#define AR2315_PCI_MISC_CONFIG  (AR2315_PCI + 0x000c)
+#define AR2315_PCIMISC_TXD_EN   0x00000001      /* Enable TXD for fragments */
+#define AR2315_PCIMISC_CFG_SEL  0x00000002      /* mem or config cycles */
+#define AR2315_PCIMISC_GIG_MASK 0x0000000C      /* bits 31-30 for pci req */
+#define AR2315_PCIMISC_RST_MODE 0x00000030
+#define AR2315_PCIRST_INPUT     0x00000000      /* 4:5=0 rst is input */
+#define AR2315_PCIRST_LOW       0x00000010      /* 4:5=1 rst to GND */
+#define AR2315_PCIRST_HIGH      0x00000020      /* 4:5=2 rst to VDD */
+#define AR2315_PCIGRANT_EN      0x00000000      /* 6:7=0 early grant en */
+#define AR2315_PCIGRANT_FRAME   0x00000040      /* 6:7=1 grant waits 4 frame */
+#define AR2315_PCIGRANT_IDLE    0x00000080      /* 6:7=2 grant waits 4 idle */
+#define AR2315_PCIGRANT_GAP     0x00000000      /* 6:7=2 grant waits 4 idle */
+#define AR2315_PCICACHE_DIS     0x00001000      /* PCI external access cache
+						 * disable */
+
+#define AR2315_PCI_OUT_TSTAMP   (AR2315_PCI + 0x0010)
+
+#define AR2315_PCI_UNCACHE_CFG  (AR2315_PCI + 0x0014)
+
+#define AR2315_PCI_IN_EN        (AR2315_PCI + 0x0100)
+#define AR2315_PCI_IN_EN0       0x01            /* Enable chain 0 */
+#define AR2315_PCI_IN_EN1       0x02            /* Enable chain 1 */
+#define AR2315_PCI_IN_EN2       0x04            /* Enable chain 2 */
+#define AR2315_PCI_IN_EN3       0x08            /* Enable chain 3 */
+
+#define AR2315_PCI_IN_DIS       (AR2315_PCI + 0x0104)
+#define AR2315_PCI_IN_DIS0      0x01            /* Disable chain 0 */
+#define AR2315_PCI_IN_DIS1      0x02            /* Disable chain 1 */
+#define AR2315_PCI_IN_DIS2      0x04            /* Disable chain 2 */
+#define AR2315_PCI_IN_DIS3      0x08            /* Disable chain 3 */
+
+#define AR2315_PCI_IN_PTR       (AR2315_PCI + 0x0200)
+
+#define AR2315_PCI_OUT_EN       (AR2315_PCI + 0x0400)
+#define AR2315_PCI_OUT_EN0      0x01            /* Enable chain 0 */
+
+#define AR2315_PCI_OUT_DIS      (AR2315_PCI + 0x0404)
+#define AR2315_PCI_OUT_DIS0     0x01            /* Disable chain 0 */
+
+#define AR2315_PCI_OUT_PTR      (AR2315_PCI + 0x0408)
+
+#define AR2315_PCI_INT_STATUS   (AR2315_PCI + 0x0500)   /* write one to clr */
+#define AR2315_PCI_TXINT        0x00000001      /* Desc In Completed */
+#define AR2315_PCI_TXOK         0x00000002      /* Desc In OK */
+#define AR2315_PCI_TXERR        0x00000004      /* Desc In ERR */
+#define AR2315_PCI_TXEOL        0x00000008      /* Desc In End-of-List */
+#define AR2315_PCI_RXINT        0x00000010      /* Desc Out Completed */
+#define AR2315_PCI_RXOK         0x00000020      /* Desc Out OK */
+#define AR2315_PCI_RXERR        0x00000040      /* Desc Out ERR */
+#define AR2315_PCI_RXEOL        0x00000080      /* Desc Out EOL */
+#define AR2315_PCI_TXOOD        0x00000200      /* Desc In Out-of-Desc */
+#define AR2315_PCI_MASK         0x0000FFFF      /* Desc Mask */
+#define AR2315_PCI_EXT_INT      0x02000000
+#define AR2315_PCI_ABORT_INT    0x04000000
+
+#define AR2315_PCI_INT_MASK     (AR2315_PCI + 0x0504)  /* same as INT_STATUS */
+
+#define AR2315_PCI_INTEN_REG    (AR2315_PCI + 0x0508)
+#define AR2315_PCI_INT_DISABLE  0x00            /* disable pci interrupts */
+#define AR2315_PCI_INT_ENABLE   0x01            /* enable pci interrupts */
+
+#define AR2315_PCI_HOST_IN_EN   (AR2315_PCI + 0x0800)
+#define AR2315_PCI_HOST_IN_DIS  (AR2315_PCI + 0x0804)
+#define AR2315_PCI_HOST_IN_PTR  (AR2315_PCI + 0x0810)
+#define AR2315_PCI_HOST_OUT_EN  (AR2315_PCI + 0x0900)
+#define AR2315_PCI_HOST_OUT_DIS (AR2315_PCI + 0x0904)
+#define AR2315_PCI_HOST_OUT_PTR (AR2315_PCI + 0x0908)
+
+
+/*
+ * Local Bus Interface Registers
+ */
+#define AR2315_LB_CONFIG        (AR2315_LOCAL + 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        (AR2315_LOCAL + 0x0004)
+#define AR2315_LBCLK_EXT        0x0001        /* use external clk for lb */
+
+#define AR2315_LB_1MS           (AR2315_LOCAL + 0x0008)
+#define AR2315_LB1MS_MASK       0x3FFFF       /* # of AHB clk cycles in 1ms */
+
+#define AR2315_LB_MISCCFG       (AR2315_LOCAL + 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       (AR2315_LOCAL + 0x0010)
+
+#define AR2315_LB_TX_CHAIN_EN   (AR2315_LOCAL + 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  (AR2315_LOCAL + 0x0104)
+#define AR2315_LB_TX_DESC_PTR   (AR2315_LOCAL + 0x0200)
+
+#define AR2315_LB_RX_CHAIN_EN   (AR2315_LOCAL + 0x0400)
+#define AR2315_LB_RXEN          0x01
+
+#define AR2315_LB_RX_CHAIN_DIS  (AR2315_LOCAL + 0x0404)
+#define AR2315_LB_RX_DESC_PTR   (AR2315_LOCAL + 0x0408)
+
+#define AR2315_LB_INT_STATUS    (AR2315_LOCAL + 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      (AR2315_LOCAL + 0x0504)
+
+#define AR2315_LB_INT_EN        (AR2315_LOCAL + 0x0508)
+#define AR2315_LB_MBOX          (AR2315_LOCAL + 0x0600)
+
+/*
+ * IR Interface Registers
+ */
+#define AR2315_IR_PKTDATA		(AR2315_IR + 0x0000)
+
+#define AR2315_IR_PKTLEN		(AR2315_IR + 0x07fc) /* 0 - 63 */
+
+#define AR2315_IR_CONTROL		(AR2315_IR + 0x0800)
+#define AR2315_IRCTL_TX			0x00000000  /* use as tranmitter */
+#define AR2315_IRCTL_RX			0x00000001  /* use as receiver   */
+#define AR2315_IRCTL_SAMPLECLK_MASK	0x00003ffe  /* Sample clk divisor */
+#define AR2315_IRCTL_SAMPLECLK_SHFT	1
+#define AR2315_IRCTL_OUTPUTCLK_MASK	0x03ffc000  /* Output clk div */
+#define AR2315_IRCTL_OUTPUTCLK_SHFT	14
+
+#define AR2315_IR_STATUS		(AR2315_IR + 0x0804)
+#define AR2315_IRSTS_RX			0x00000001  /* receive in progress */
+#define AR2315_IRSTS_TX			0x00000002  /* transmit in progress */
+
+#define AR2315_IR_CONFIG		(AR2315_IR + 0x0808)
+#define AR2315_IRCFG_INVIN		0x00000001  /* invert in polarity */
+#define AR2315_IRCFG_INVOUT		0x00000002  /* invert out polarity */
+#define AR2315_IRCFG_SEQ_START_WIN_SEL	0x00000004  /* 1 => 28, 0 => 7 */
+#define AR2315_IRCFG_SEQ_START_THRESH	0x000000f0
+#define AR2315_IRCFG_SEQ_END_UNIT_SEL	0x00000100
+#define AR2315_IRCFG_SEQ_END_UNIT_THRESH 0x00007e00
+#define AR2315_IRCFG_SEQ_END_WIN_SEL	0x00008000
+#define AR2315_IRCFG_SEQ_END_WIN_THRESH	0x001f0000
+#define AR2315_IRCFG_NUM_BACKOFF_WORDS	0x01e00000
+
+#define HOST_PCI_DEV_ID         3
+#define HOST_PCI_MBAR0          0x10000000
+#define HOST_PCI_MBAR1          0x20000000
+#define HOST_PCI_MBAR2          0x30000000
+
+#define HOST_PCI_SDRAM_BASEADDR HOST_PCI_MBAR1
+#define PCI_DEVICE_MEM_SPACE    0x800000
+
+#endif /* __AR2315_REG_H */
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar231x/ar5312_regs.h
@@ -0,0 +1,233 @@
+/*
+ * 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 AR5312_H
+#define AR5312_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 */
+
+
+/* Address Map */
+#define AR531X_WLAN0            0x18000000
+#define AR531X_WLAN1            0x18500000
+#define AR531X_ENET0            0x18100000
+#define AR531X_ENET1            0x18200000
+#define AR531X_SDRAMCTL         0x18300000
+#define AR531X_FLASHCTL         0x18400000
+#define AR531X_APBBASE		0x1c000000
+#define AR531X_FLASH            0x1e000000
+#define AR531X_UART0            0xbc000003      /* UART MMR */
+
+/*
+ * AR531X_NUM_ENET_MAC defines the number of ethernet MACs that
+ * should be considered available.  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 AR531X_NUM_ENET_MAC             2
+
+/*
+ * Need these defines to determine true number of ethernet MACs
+ */
+#define AR5212_AR5312_REV2      0x0052          /* AR5312 WMAC (AP31) */
+#define AR5212_AR5312_REV7      0x0057          /* AR5312 WMAC (AP30-040) */
+#define AR5212_AR2313_REV8      0x0058          /* AR2313 WMAC (AP43-030) */
+
+/*
+ * AR531X_NUM_WMAC defines the number of Wireless MACs that\
+ * should be considered available.
+ */
+#define AR531X_NUM_WMAC                 2
+
+/* Reset/Timer Block Address Map */
+#define AR531X_RESETTMR		(AR531X_APBBASE  + 0x3000)
+#define AR531X_TIMER		(AR531X_RESETTMR + 0x0000) /* countdown timer */
+#define AR531X_WD_CTRL		(AR531X_RESETTMR + 0x0008) /* watchdog cntrl */
+#define AR531X_WD_TIMER		(AR531X_RESETTMR + 0x000c) /* watchdog timer */
+#define AR531X_ISR		(AR531X_RESETTMR + 0x0010) /* Intr Status Reg */
+#define AR531X_IMR		(AR531X_RESETTMR + 0x0014) /* Intr Mask Reg */
+#define AR531X_RESET		(AR531X_RESETTMR + 0x0020)
+#define AR5312_CLOCKCTL1	(AR531X_RESETTMR + 0x0064)
+#define AR5312_SCRATCH		(AR531X_RESETTMR + 0x006c)
+#define AR531X_PROCADDR		(AR531X_RESETTMR + 0x0070)
+#define AR531X_PROC1		(AR531X_RESETTMR + 0x0074)
+#define AR531X_DMAADDR		(AR531X_RESETTMR + 0x0078)
+#define AR531X_DMA1		(AR531X_RESETTMR + 0x007c)
+#define AR531X_ENABLE		(AR531X_RESETTMR + 0x0080) /* interface enb */
+#define AR531X_REV		(AR531X_RESETTMR + 0x0090) /* revision */
+
+/* AR531X_WD_CTRL register bit field definitions */
+#define AR531X_WD_CTRL_IGNORE_EXPIRATION 0x0000
+#define AR531X_WD_CTRL_NMI               0x0001
+#define AR531X_WD_CTRL_RESET             0x0002
+
+/* AR531X_ISR register bit field definitions */
+#define AR531X_ISR_NONE		0x0000
+#define AR531X_ISR_TIMER	0x0001
+#define AR531X_ISR_AHBPROC	0x0002
+#define AR531X_ISR_AHBDMA	0x0004
+#define AR531X_ISR_GPIO		0x0008
+#define AR531X_ISR_UART0	0x0010
+#define AR531X_ISR_UART0DMA	0x0020
+#define AR531X_ISR_WD		0x0040
+#define AR531X_ISR_LOCAL	0x0080
+
+/* AR531X_RESET register bit field definitions */
+#define AR531X_RESET_SYSTEM     0x00000001  /* cold reset full system */
+#define AR531X_RESET_PROC       0x00000002  /* cold reset MIPS core */
+#define AR531X_RESET_WLAN0      0x00000004  /* cold reset WLAN MAC and BB */
+#define AR531X_RESET_EPHY0      0x00000008  /* cold reset ENET0 phy */
+#define AR531X_RESET_EPHY1      0x00000010  /* cold reset ENET1 phy */
+#define AR531X_RESET_ENET0      0x00000020  /* cold reset ENET0 mac */
+#define AR531X_RESET_ENET1      0x00000040  /* cold reset ENET1 mac */
+#define AR531X_RESET_UART0      0x00000100  /* cold reset UART0 (high speed) */
+#define AR531X_RESET_WLAN1      0x00000200  /* cold reset WLAN MAC/BB */
+#define AR531X_RESET_APB        0x00000400  /* cold reset APB (ar5312) */
+#define AR531X_RESET_WARM_PROC  0x00001000  /* warm reset MIPS core */
+#define AR531X_RESET_WARM_WLAN0_MAC 0x00002000  /* warm reset WLAN0 MAC */
+#define AR531X_RESET_WARM_WLAN0_BB  0x00004000  /* warm reset WLAN0 BaseBand */
+#define AR531X_RESET_NMI        0x00010000  /* send an NMI to the processor */
+#define AR531X_RESET_WARM_WLAN1_MAC 0x00020000  /* warm reset WLAN1 mac */
+#define AR531X_RESET_WARM_WLAN1_BB  0x00040000  /* warm reset WLAN1 baseband */
+#define AR531X_RESET_LOCAL_BUS  0x00080000  /* reset local bus */
+#define AR531X_RESET_WDOG       0x00100000  /* last reset was a watchdog */
+
+#define AR531X_RESET_WMAC0_BITS \
+	(AR531X_RESET_WLAN0 |\
+	 AR531X_RESET_WARM_WLAN0_MAC |\
+	 AR531X_RESET_WARM_WLAN0_BB)
+
+#define AR531X_RESERT_WMAC1_BITS \
+	(AR531X_RESET_WLAN1 |\
+	 AR531X_RESET_WARM_WLAN1_MAC |\
+	 AR531X_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
+
+
+/* AR531X_ENABLE register bit field definitions */
+#define AR531X_ENABLE_WLAN0              0x0001
+#define AR531X_ENABLE_ENET0              0x0002
+#define AR531X_ENABLE_ENET1              0x0004
+#define AR531X_ENABLE_UART_AND_WLAN1_PIO 0x0008   /* UART, and WLAN1 PIOs */
+#define AR531X_ENABLE_WLAN1_DMA          0x0010   /* WLAN1 DMAs */
+#define AR531X_ENABLE_WLAN1 \
+	(AR531X_ENABLE_UART_AND_WLAN1_PIO |\
+	 AR531X_ENABLE_WLAN1_DMA)
+
+/* AR531X_REV register bit field definitions */
+#define AR531X_REV_WMAC_MAJ    0xf000
+#define AR531X_REV_WMAC_MAJ_S  12
+#define AR531X_REV_WMAC_MIN    0x0f00
+#define AR531X_REV_WMAC_MIN_S  8
+#define AR531X_REV_MAJ         0x00f0
+#define AR531X_REV_MAJ_S       4
+#define AR531X_REV_MIN         0x000f
+#define AR531X_REV_MIN_S       0
+#define AR531X_REV_CHIP        (AR531X_REV_MAJ|AR531X_REV_MIN)
+
+/* Major revision numbers, bits 7..4 of Revision ID register */
+#define AR531X_REV_MAJ_AR5312          0x4
+#define AR531X_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 */
+
+/* AR531X_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_MWx8   0x00000000      /* Memory width x8 */
+#define FLASHCTL_MWx16  0x10000000      /* Memory width x16 */
+#define FLASHCTL_MWx32  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 Flash Controller -- 3 flash banks with either x8 or x16 devices.  */
+#define AR531X_FLASHCTL0        (AR531X_FLASHCTL + 0x00)
+#define AR531X_FLASHCTL1        (AR531X_FLASHCTL + 0x04)
+#define AR531X_FLASHCTL2        (AR531X_FLASHCTL + 0x08)
+
+/* ARM SDRAM Controller -- just enough to determine memory size */
+#define AR531X_MEM_CFG1 (AR531X_SDRAMCTL + 0x04)
+#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
+
+/* GPIO Address Map */
+#define AR531X_GPIO         (AR531X_APBBASE  + 0x2000)
+#define AR531X_GPIO_DO      (AR531X_GPIO + 0x00)        /* output register */
+#define AR531X_GPIO_DI      (AR531X_GPIO + 0x04)        /* intput register */
+#define AR531X_GPIO_CR      (AR531X_GPIO + 0x08)        /* control register */
+
+/* GPIO Control Register bit field definitions */
+#define AR531X_GPIO_CR_M(x)    (1 << (x))               /* mask for i/o */
+#define AR531X_GPIO_CR_O(x)    (0 << (x))               /* mask for output */
+#define AR531X_GPIO_CR_I(x)    (1 << (x))               /* mask for input */
+#define AR531X_GPIO_CR_INT(x)  (1 << ((x)+8))           /* mask for interrupt*/
+#define AR531X_GPIO_CR_UART(x) (1 << ((x)+16))          /* uart multiplex */
+#define AR531X_NUM_GPIO		8
+
+
+#endif
+
--- /dev/null
+++ b/arch/mips/ar231x/ar5312.c
@@ -0,0 +1,601 @@
+/*
+ * 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 <ar231x_platform.h>
+#include <ar5312_regs.h>
+#include <ar231x.h>
+#include "devices.h"
+#include "ar5312.h"
+
+static void
+ar5312_misc_irq_dispatch(void)
+{
+	unsigned int ar231x_misc_intrs = ar231x_read_reg(AR531X_ISR) &
+					 ar231x_read_reg(AR531X_IMR);
+
+	if (ar231x_misc_intrs & AR531X_ISR_TIMER) {
+		do_IRQ(AR531X_MISC_IRQ_TIMER);
+		(void)ar231x_read_reg(AR531X_TIMER);
+	} else if (ar231x_misc_intrs & AR531X_ISR_AHBPROC)
+		do_IRQ(AR531X_MISC_IRQ_AHB_PROC);
+	else if ((ar231x_misc_intrs & AR531X_ISR_UART0))
+		do_IRQ(AR531X_MISC_IRQ_UART0);
+	else if (ar231x_misc_intrs & AR531X_ISR_WD)
+		do_IRQ(AR531X_MISC_IRQ_WATCHDOG);
+	else
+		do_IRQ(AR531X_MISC_IRQ_NONE);
+}
+
+static asmlinkage 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)
+		ar5312_misc_irq_dispatch();
+	else if (pending & CAUSEF_IP7)
+		do_IRQ(AR531X_IRQ_CPU_CLOCK);
+}
+
+
+/* Enable the specified AR531X_MISC_IRQ interrupt */
+static void
+ar5312_misc_intr_enable(struct irq_data *d)
+{
+	unsigned int imr;
+
+	imr = ar231x_read_reg(AR531X_IMR);
+	imr |= (1 << (d->irq - AR531X_MISC_IRQ_BASE - 1));
+	ar231x_write_reg(AR531X_IMR, imr);
+}
+
+/* Disable the specified AR531X_MISC_IRQ interrupt */
+static void
+ar5312_misc_intr_disable(struct irq_data *d)
+{
+	unsigned int imr;
+
+	imr = ar231x_read_reg(AR531X_IMR);
+	imr &= ~(1 << (d->irq - AR531X_MISC_IRQ_BASE - 1));
+	ar231x_write_reg(AR531X_IMR, imr);
+	ar231x_read_reg(AR531X_IMR); /* flush write buffer */
+}
+
+static struct irq_chip ar5312_misc_intr_controller = {
+	.irq_mask     = ar5312_misc_intr_disable,
+	.irq_unmask   = ar5312_misc_intr_enable,
+};
+
+
+static irqreturn_t ar5312_ahb_proc_handler(int cpl, void *dev_id)
+{
+	u32 proc1 = ar231x_read_reg(AR531X_PROC1);
+	u32 proc_addr = ar231x_read_reg(AR531X_PROCADDR); /* clears error */
+	u32 dma1 = ar231x_read_reg(AR531X_DMA1);
+	u32 dma_addr = ar231x_read_reg(AR531X_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_proc_interrupt  = {
+	.handler = ar5312_ahb_proc_handler,
+	.name    = "ar5312_ahb_proc_interrupt",
+};
+
+
+static struct irqaction cascade  = {
+	.handler = no_action,
+	.name    = "cascade",
+};
+
+void __init ar5312_irq_init(void)
+{
+	int i;
+
+	if (!is_5312())
+		return;
+
+	ar231x_irq_dispatch = ar5312_irq_dispatch;
+	for (i = 0; i < AR531X_MISC_IRQ_COUNT; i++) {
+		int irq = AR531X_MISC_IRQ_BASE + i;
+		irq_set_chip_and_handler(irq, &ar5312_misc_intr_controller,
+			handle_level_irq);
+	}
+	setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar5312_ahb_proc_interrupt);
+	setup_irq(AR5312_IRQ_MISC_INTRS, &cascade);
+}
+
+static u32
+ar5312_gpio_set_output(u32 mask, u32 val)
+{
+	u32 reg;
+
+	reg = ar231x_read_reg(AR531X_GPIO_CR);
+	reg |= mask;
+	reg &= ~val;
+	ar231x_write_reg(AR531X_GPIO_CR, reg);
+	return reg;
+}
+
+static u32
+ar5312_gpio_get(u32 valid_mask)
+{
+	u32 reg;
+	reg = ar231x_read_reg(AR531X_GPIO_DI);
+	reg &= valid_mask;
+	return reg;
+}
+
+static u32
+ar5312_gpio_set(u32 mask, u32 value)
+{
+	u32 reg;
+	reg = ar231x_read_reg(AR531X_GPIO_DO);
+	reg &= ~mask;
+	reg |= value;
+	ar231x_write_reg(AR531X_GPIO_DO, reg);
+	return reg;
+}
+
+/*
+ * gpiolib implementations. Original mask based methods preserved
+ */
+static int
+ar5312_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
+{
+	struct ar231x_gpio_chip *gpch =
+		container_of(chip, struct ar231x_gpio_chip, chip);
+	u32 mask = 1 << gpio;
+	u32 rett;
+	if (!(gpch->valid_mask & mask))
+		return 0;
+	rett = ar5312_gpio_get(gpch->valid_mask);
+	return !!(rett & mask);
+}
+
+static void
+ar5312_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value)
+{
+	struct ar231x_gpio_chip *gpch =
+		container_of(chip, struct ar231x_gpio_chip, chip);
+	u32 mask = 1 << gpio;
+	if (!(gpch->valid_mask & mask))
+		return;
+	ar5312_gpio_set(mask, (!!value) * mask);
+}
+
+static int
+ar5312_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
+{
+	struct ar231x_gpio_chip *gpch =
+		container_of(chip, struct ar231x_gpio_chip, chip);
+	u32 mask = 1 << gpio;
+	if (!(gpch->valid_mask & mask))
+		return -ENXIO;
+	ar5312_gpio_set_output(mask, 0);
+	return 0;
+}
+static int
+ar5312_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value)
+{
+	struct ar231x_gpio_chip *gpch =
+		container_of(chip, struct ar231x_gpio_chip, chip);
+	u32 mask = 1 << gpio;
+	if (!(gpch->valid_mask & mask))
+		return -ENXIO;
+	ar5312_gpio_set_output(mask, mask);
+	ar5312_gpio_set(mask, (!!value) * mask);
+	return 0;
+}
+
+static struct ar231x_gpio_chip ar5312_gpio_chip = {
+	.valid_mask = (1 << 22) - 1,
+	.chip = {
+		.label                  = "ar5312-gpio",
+		.direction_input        = ar5312_gpio_direction_input,
+		.direction_output       = ar5312_gpio_direction_output,
+		.set                    = ar5312_gpio_set_value,
+		.get                    = ar5312_gpio_get_value,
+		.base                   = 0,
+		.ngpio                  = AR531X_GPIO_IRQ_COUNT, /* 22 */
+	}
+};
+
+/* end of gpiolib */
+
+static void ar5312_device_reset_set(u32 mask)
+{
+	u32 val;
+
+	val = ar231x_read_reg(AR531X_RESET);
+	ar231x_write_reg(AR531X_RESET, val | mask);
+}
+
+static void ar5312_device_reset_clear(u32 mask)
+{
+	u32 val;
+
+	val = ar231x_read_reg(AR531X_RESET);
+	ar231x_write_reg(AR531X_RESET, val & ~mask);
+}
+
+static struct physmap_flash_data ar5312_flash_data = {
+	.width = 2,
+};
+
+static struct resource ar5312_flash_resource = {
+	.start = AR531X_FLASH,
+	.end = AR531X_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 = AR531X_RESET_ENET0,
+	.reset_phy = AR531X_RESET_EPHY0,
+	.phy_base = KSEG1ADDR(AR531X_ENET0),
+	.config = &ar231x_board,
+};
+
+static struct ar231x_eth ar5312_eth1_data = {
+	.reset_set = ar5312_device_reset_set,
+	.reset_clear = ar5312_device_reset_clear,
+	.reset_mac = AR531X_RESET_ENET1,
+	.reset_phy = AR531X_RESET_EPHY1,
+	.phy_base = KSEG1ADDR(AR531X_ENET1),
+	.config = &ar231x_board,
+};
+
+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)
+{
+	u32 ctl;
+	/*
+	 * 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) |
+		(ar231x_read_reg(AR531X_FLASHCTL0) & FLASHCTL_MW);
+
+	ar231x_write_reg(AR531X_FLASHCTL0, ctl);
+
+	/* Disable other flash banks */
+	ar231x_write_reg(AR531X_FLASHCTL1,
+			 ar231x_read_reg(AR531X_FLASHCTL1) &
+			 ~(FLASHCTL_E | FLASHCTL_AC));
+
+	ar231x_write_reg(AR531X_FLASHCTL2,
+			 ar231x_read_reg(AR531X_FLASHCTL2) &
+			 ~(FLASHCTL_E | FLASHCTL_AC));
+
+	return (char *)KSEG1ADDR(AR531X_FLASH + 0x800000);
+}
+
+int __init ar5312_init_devices(void)
+{
+	struct ar231x_boarddata *config;
+	u32 fctl = 0;
+	u8 *c;
+
+	if (!is_5312())
+		return 0;
+
+	/* Locate board/radio config data */
+	ar231x_find_config(ar5312_flash_limit());
+	config = ar231x_board.config;
+
+	/* AR2313 has CPU minor rev. 10 */
+	if ((current_cpu_data.processor_id & 0xff) == 0x0a)
+		ar231x_devtype = DEV_TYPE_AR2313;
+
+	/* AR2312 shares the same Silicon ID as AR5312 */
+	else if (config->flags & BD_ISCASPER)
+		ar231x_devtype = DEV_TYPE_AR2312;
+
+	/* Everything else is probably AR5312 or compatible */
+	else
+		ar231x_devtype = DEV_TYPE_AR5312;
+
+	/* fixup flash width */
+	fctl = ar231x_read_reg(AR531X_FLASHCTL) & FLASHCTL_MW;
+	switch (fctl) {
+	case FLASHCTL_MWx16:
+		ar5312_flash_data.width = 2;
+		break;
+	case FLASHCTL_MWx8:
+	default:
+		ar5312_flash_data.width = 1;
+		break;
+	}
+
+	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 (!memcmp(config->enet0_mac, "\xff\xff\xff\xff\xff\xff", 6))
+		memcpy(config->enet0_mac, config->enet1_mac, 6);
+
+	/* If ENET0 and ENET1 have the same mac address,
+	 * increment the one from ENET1 */
+	if (memcmp(config->enet0_mac, config->enet1_mac, 6) == 0) {
+		c = config->enet1_mac + 5;
+		while ((c >= config->enet1_mac) && !(++(*c)))
+			c--;
+	}
+
+	switch (ar231x_devtype) {
+	case DEV_TYPE_AR5312:
+		ar5312_eth0_data.macaddr = config->enet0_mac;
+		ar231x_add_ethernet(0, KSEG1ADDR(AR531X_ENET0),
+			AR5312_IRQ_ENET0_INTRS, &ar5312_eth0_data);
+
+		ar5312_eth1_data.macaddr = config->enet1_mac;
+		ar231x_add_ethernet(1, KSEG1ADDR(AR531X_ENET1),
+			AR5312_IRQ_ENET1_INTRS, &ar5312_eth1_data);
+
+		if (!ar231x_board.radio)
+			return 0;
+
+		if (!(config->flags & BD_WLAN0))
+			break;
+
+		ar231x_add_wmac(0, AR531X_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 DEV_TYPE_AR2312:
+	case DEV_TYPE_AR2313:
+		ar5312_eth1_data.phy_base = ar5312_eth0_data.phy_base;
+		ar5312_eth1_data.reset_phy = ar5312_eth0_data.reset_phy;
+		ar5312_eth1_data.macaddr = config->enet0_mac;
+		ar231x_add_ethernet(0, KSEG1ADDR(AR531X_ENET1),
+			AR5312_IRQ_ENET1_INTRS, &ar5312_eth1_data);
+
+		if (!ar231x_board.radio)
+			return 0;
+		break;
+	default:
+		break;
+	}
+
+	if (config->flags & BD_WLAN1)
+		ar231x_add_wmac(1, AR531X_WLAN1, AR5312_IRQ_WLAN1_INTRS);
+
+	return 0;
+}
+
+
+static void ar5312_restart(char *command)
+{
+	/* reset the system */
+	local_irq_disable();
+	while (1)
+		ar231x_write_reg(AR531X_RESET, AR531X_RESET_SYSTEM);
+}
+
+
+/*
+ * 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 __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 = ar231x_read_reg(AR5312_SCRATCH);
+	if (scratch)
+		return scratch;
+
+	devid = ar231x_read_reg(AR531X_REV);
+	devid &= AR531X_REV_MAJ;
+	devid >>= AR531X_REV_MAJ_S;
+	if (devid == AR531X_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 = ar231x_read_reg(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 int
+ar5312_sys_frequency(void)
+{
+	return ar5312_cpu_frequency() / 4;
+}
+
+void __init
+ar5312_time_init(void)
+{
+	if (!is_5312())
+		return;
+
+	mips_hpt_frequency = ar5312_cpu_frequency() / 2;
+}
+
+int __init
+ar5312_gpio_init(void)
+{
+	int ret;
+	struct ar231x_gpio_chip *gpch;
+	gpch = &ar5312_gpio_chip;
+	ret = gpiochip_add(&gpch->chip);
+	if (ret) {
+		pr_err("%s: failed to add gpiochip\n", gpch->chip.label);
+		return ret;
+	}
+	pr_info("%s: registered %d GPIOs\n", gpch->chip.label,
+		gpch->chip.ngpio);
+	return ret;
+}
+
+void __init
+ar5312_prom_init(void)
+{
+	u32 memsize, memcfg, bank0AC, bank1AC;
+	u32 devid;
+
+	if (!is_5312())
+		return;
+
+	/* Detect memory size */
+	memcfg = ar231x_read_reg(AR531X_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);
+
+	devid = ar231x_read_reg(AR531X_REV);
+	devid >>= AR531X_REV_WMAC_MIN_S;
+	devid &= AR531X_REV_CHIP;
+	ar231x_board.devid = (u16) devid;
+	ar5312_gpio_init();
+}
+
+void __init
+ar5312_plat_setup(void)
+{
+	if (!is_5312())
+		return;
+
+	/* Clear any lingering AHB errors */
+	ar231x_read_reg(AR531X_PROCADDR);
+	ar231x_read_reg(AR531X_DMAADDR);
+	ar231x_write_reg(AR531X_WD_CTRL, AR531X_WD_CTRL_IGNORE_EXPIRATION);
+
+	_machine_restart = ar5312_restart;
+	ar231x_serial_setup(KSEG1ADDR(AR531X_UART0), AR531X_MISC_IRQ_UART0,
+			    ar5312_sys_frequency());
+}
+
--- /dev/null
+++ b/arch/mips/ar231x/ar2315.c
@@ -0,0 +1,661 @@
+/*
+ * 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 <ar231x_platform.h>
+#include <ar2315_regs.h>
+#include <ar231x.h>
+#include "devices.h"
+#include "ar2315.h"
+
+static u32 gpiointmask, gpiointval;
+
+static inline void ar2315_gpio_irq(void)
+{
+	u32 pend;
+	int bit = -1;
+
+	/* only do one gpio interrupt at a time */
+	pend = (ar231x_read_reg(AR2315_GPIO_DI) ^ gpiointval) & gpiointmask;
+
+	if (pend) {
+		bit = fls(pend) - 1;
+		pend &= ~(1 << bit);
+		gpiointval ^= (1 << bit);
+	}
+
+	if (!pend)
+		ar231x_write_reg(AR2315_ISR, AR2315_ISR_GPIO);
+
+	/* Enable interrupt with edge detection */
+	if ((ar231x_read_reg(AR2315_GPIO_CR) & AR2315_GPIO_CR_M(bit)) !=
+	    AR2315_GPIO_CR_I(bit))
+		return;
+
+	if (bit >= 0)
+		do_IRQ(AR531X_GPIO_IRQ_BASE + bit);
+}
+
+static void
+ar2315_misc_irq_dispatch(void)
+{
+	unsigned int misc_intr = ar231x_read_reg(AR2315_ISR) &
+				 ar231x_read_reg(AR2315_IMR);
+
+	if (misc_intr & AR2315_ISR_SPI)
+		do_IRQ(AR531X_MISC_IRQ_SPI);
+	else if (misc_intr & AR2315_ISR_TIMER)
+		do_IRQ(AR531X_MISC_IRQ_TIMER);
+	else if (misc_intr & AR2315_ISR_AHB)
+		do_IRQ(AR531X_MISC_IRQ_AHB_PROC);
+	else if (misc_intr & AR2315_ISR_GPIO)
+		ar2315_gpio_irq();
+	else if (misc_intr & AR2315_ISR_UART0)
+		do_IRQ(AR531X_MISC_IRQ_UART0);
+	else if (misc_intr & AR2315_ISR_WD) {
+		ar231x_write_reg(AR2315_ISR, AR2315_ISR_WD);
+		do_IRQ(AR531X_MISC_IRQ_WATCHDOG);
+	} else
+		do_IRQ(AR531X_MISC_IRQ_NONE);
+}
+
+/*
+ * 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 asmlinkage 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)
+		ar2315_misc_irq_dispatch();
+	else if (pending & CAUSEF_IP7)
+		do_IRQ(AR531X_IRQ_CPU_CLOCK);
+}
+
+static void ar2315_set_gpiointmask(int gpio, int level)
+{
+	u32 reg;
+
+	reg = ar231x_read_reg(AR2315_GPIO_INT);
+	reg &= ~(AR2315_GPIO_INT_M | AR2315_GPIO_INT_LVL_M);
+	reg |= gpio | AR2315_GPIO_INT_LVL(level);
+	ar231x_write_reg(AR2315_GPIO_INT, reg);
+}
+
+static void ar2315_gpio_intr_enable(struct irq_data *d)
+{
+	unsigned int gpio = d->irq - AR531X_GPIO_IRQ_BASE;
+
+	/* Enable interrupt with edge detection */
+	if ((ar231x_read_reg(AR2315_GPIO_CR) & AR2315_GPIO_CR_M(gpio)) !=
+	    AR2315_GPIO_CR_I(gpio))
+		return;
+
+	gpiointmask |= (1 << gpio);
+	ar2315_set_gpiointmask(gpio, 3);
+}
+
+static void ar2315_gpio_intr_disable(struct irq_data *d)
+{
+	unsigned int gpio = d->irq - AR531X_GPIO_IRQ_BASE;
+
+	/* Disable interrupt */
+	gpiointmask &= ~(1 << gpio);
+	ar2315_set_gpiointmask(gpio, 0);
+}
+
+static struct irq_chip ar2315_gpio_intr_controller = {
+	.irq_mask     = ar2315_gpio_intr_disable,
+	.irq_unmask   = ar2315_gpio_intr_enable,
+};
+
+static void
+ar2315_misc_intr_enable(struct irq_data *d)
+{
+	unsigned int imr;
+
+	imr = ar231x_read_reg(AR2315_IMR);
+	switch (d->irq) {
+	case AR531X_MISC_IRQ_SPI:
+		imr |= AR2315_ISR_SPI;
+		break;
+	case AR531X_MISC_IRQ_TIMER:
+		imr |= AR2315_ISR_TIMER;
+		break;
+	case AR531X_MISC_IRQ_AHB_PROC:
+		imr |= AR2315_ISR_AHB;
+		break;
+	case AR531X_MISC_IRQ_GPIO:
+		imr |= AR2315_ISR_GPIO;
+		break;
+	case AR531X_MISC_IRQ_UART0:
+		imr |= AR2315_ISR_UART0;
+		break;
+	case AR531X_MISC_IRQ_WATCHDOG:
+		imr |= AR2315_ISR_WD;
+		break;
+	default:
+		break;
+	}
+	ar231x_write_reg(AR2315_IMR, imr);
+}
+
+static void
+ar2315_misc_intr_disable(struct irq_data *d)
+{
+	unsigned int imr;
+
+	imr = ar231x_read_reg(AR2315_IMR);
+	switch (d->irq) {
+	case AR531X_MISC_IRQ_SPI:
+		imr &= ~AR2315_ISR_SPI;
+		break;
+	case AR531X_MISC_IRQ_TIMER:
+		imr &= ~AR2315_ISR_TIMER;
+		break;
+	case AR531X_MISC_IRQ_AHB_PROC:
+		imr &= ~AR2315_ISR_AHB;
+		break;
+	case AR531X_MISC_IRQ_GPIO:
+		imr &= ~AR2315_ISR_GPIO;
+		break;
+	case AR531X_MISC_IRQ_UART0:
+		imr &= ~AR2315_ISR_UART0;
+		break;
+	case AR531X_MISC_IRQ_WATCHDOG:
+		imr &= ~AR2315_ISR_WD;
+		break;
+	default:
+		break;
+	}
+	ar231x_write_reg(AR2315_IMR, imr);
+}
+
+static struct irq_chip ar2315_misc_intr_controller = {
+	.irq_mask     = ar2315_misc_intr_disable,
+	.irq_unmask   = ar2315_misc_intr_enable,
+};
+
+static irqreturn_t ar2315_ahb_proc_handler(int cpl, void *dev_id)
+{
+	ar231x_write_reg(AR2315_AHB_ERR0, AHB_ERROR_DET);
+	ar231x_read_reg(AR2315_AHB_ERR1);
+
+	pr_emerg("AHB fatal error\n");
+	machine_restart("AHB error"); /* Catastrophic failure */
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction ar2315_ahb_proc_interrupt  = {
+	.handler	= ar2315_ahb_proc_handler,
+	.name		= "ar2315_ahb_proc_interrupt",
+};
+
+static struct irqaction cascade  = {
+	.handler	= no_action,
+	.name		= "cascade",
+};
+
+void
+ar2315_irq_init(void)
+{
+	int i;
+
+	if (!is_2315())
+		return;
+
+	ar231x_irq_dispatch = ar2315_irq_dispatch;
+	gpiointval = ar231x_read_reg(AR2315_GPIO_DI);
+	for (i = 0; i < AR531X_MISC_IRQ_COUNT; i++) {
+		int irq = AR531X_MISC_IRQ_BASE + i;
+		irq_set_chip_and_handler(irq, &ar2315_misc_intr_controller,
+			handle_level_irq);
+	}
+	for (i = 0; i < AR531X_GPIO_IRQ_COUNT; i++) {
+		int irq = AR531X_GPIO_IRQ_BASE + i;
+		irq_set_chip_and_handler(irq, &ar2315_gpio_intr_controller,
+			handle_level_irq);
+	}
+	setup_irq(AR531X_MISC_IRQ_GPIO, &cascade);
+	setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar2315_ahb_proc_interrupt);
+	setup_irq(AR2315_IRQ_MISC_INTRS, &cascade);
+}
+
+static u32
+ar2315_gpio_set_output(u32 mask, u32 val)
+{
+	u32 reg;
+
+	reg = ar231x_read_reg(AR2315_GPIO_CR);
+	reg &= ~mask;
+	reg |= val;
+	ar231x_write_reg(AR2315_GPIO_CR, reg);
+	return reg;
+}
+
+static u32
+ar2315_gpio_get(u32 valid_mask)
+{
+	u32 reg;
+	reg = ar231x_read_reg(AR2315_GPIO_DI);
+	reg &= valid_mask;
+	return reg;
+}
+
+static u32
+ar2315_gpio_set(u32 mask, u32 value)
+{
+	u32 reg;
+	reg = ar231x_read_reg(AR2315_GPIO_DO);
+	reg &= ~mask;
+	reg |= value;
+	ar231x_write_reg(AR2315_GPIO_DO, reg);
+	return reg;
+}
+
+/*
+ * gpiolib implementation.  Original legacy mask based methods
+ * preserved for now.
+ */
+static int
+ar2315_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
+{
+	struct ar231x_gpio_chip *gpch =
+		container_of(chip, struct ar231x_gpio_chip, chip);
+	u32 mask = 1 << gpio;
+	u32 rett;
+	if (!(gpch->valid_mask & mask))
+		return 0;
+	rett = ar2315_gpio_get(gpch->valid_mask);  /* legacy code */
+	return !!(rett & mask);
+}
+
+static void
+ar2315_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value)
+{
+	struct ar231x_gpio_chip *gpch =
+		container_of(chip, struct ar231x_gpio_chip, chip);
+	u32 mask = 1 << gpio;
+	if (!(gpch->valid_mask & mask))
+		return;
+	ar2315_gpio_set(mask, (!!value) * mask);  /* legacy */
+}
+
+static int
+ar2315_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
+{
+	struct ar231x_gpio_chip *gpch =
+		container_of(chip, struct ar231x_gpio_chip, chip);
+	u32 mask = 1 << gpio;
+	if (!(gpch->valid_mask & mask))
+		return -ENXIO;
+	ar2315_gpio_set_output(mask, 0);  /* legacy */
+	return 0;
+}
+
+static int
+ar2315_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value)
+{
+	struct ar231x_gpio_chip *gpch =
+		container_of(chip, struct ar231x_gpio_chip, chip);
+	u32 mask = 1 << gpio;
+	if (!(gpch->valid_mask & mask))
+		return -ENXIO;
+	ar2315_gpio_set_output(mask, mask);  /* both legacy */
+	ar2315_gpio_set(mask, (!!value) * mask);
+	return 0;
+}
+
+static struct ar231x_gpio_chip ar2315_gpio_chip = {
+	.valid_mask = (1 << 22) - 1,
+	.chip = {
+		.label                  = "ar2315-gpio",
+		.direction_input        = ar2315_gpio_direction_input,
+		.direction_output       = ar2315_gpio_direction_output,
+		.set                    = ar2315_gpio_set_value,
+		.get                    = ar2315_gpio_get_value,
+		.base                   = 0,
+		.ngpio                  = AR531X_GPIO_IRQ_COUNT, /* 22 */
+	}
+};
+
+/* end of gpiolib */
+
+static void ar2315_device_reset_set(u32 mask)
+{
+	u32 val;
+
+	val = ar231x_read_reg(AR2315_RESET);
+	ar231x_write_reg(AR2315_RESET, val | mask);
+}
+
+static void ar2315_device_reset_clear(u32 mask)
+{
+	u32 val;
+
+	val = ar231x_read_reg(AR2315_RESET);
+	ar231x_write_reg(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,
+	.phy_base = KSEG1ADDR(AR2315_ENET0),
+	.config = &ar231x_board,
+};
+
+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_WD,
+		.end = AR2315_WD + 8 - 1,
+	},
+	{
+		.flags = IORESOURCE_IRQ,
+		.start = AR531X_MISC_IRQ_WATCHDOG,
+		.end = AR531X_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 == ar231x_board.config->reset_config_gpio))
+			continue;
+
+		if (i == ar231x_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
+
+int __init
+ar2315_init_devices(void)
+{
+	if (!is_2315())
+		return 0;
+
+	/* Find board configuration */
+	ar231x_find_config(ar2315_flash_limit());
+	ar2315_eth_data.macaddr = ar231x_board.config->enet0_mac;
+
+	ar2315_init_gpio_leds();
+	platform_device_register(&ar2315_wdt);
+	platform_device_register(&ar2315_spiflash);
+	ar231x_add_ethernet(0, KSEG1ADDR(AR2315_ENET0), AR2315_IRQ_ENET0_INTRS,
+		&ar2315_eth_data);
+	ar231x_add_wmac(0, AR2315_WLAN0, AR2315_IRQ_WLAN0_INTRS);
+
+	return 0;
+}
+
+static void
+ar2315_restart(char *command)
+{
+	void (*mips_reset_vec)(void) = (void *)0xbfc00000;
+
+	local_irq_disable();
+
+	/* try reset the system via reset control */
+	ar231x_write_reg(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 int __init
+ar2315_sys_clk(unsigned int clock_ctl)
+{
+	unsigned int pllc_ctrl, cpu_div;
+	unsigned int pllc_out, refdiv, fdiv, divby2;
+	unsigned int clk_div;
+
+	pllc_ctrl = ar231x_read_reg(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 int
+ar2315_cpu_frequency(void)
+{
+	return ar2315_sys_clk(ar231x_read_reg(AR2315_CPUCLK));
+}
+
+static inline unsigned int
+ar2315_apb_frequency(void)
+{
+	return ar2315_sys_clk(ar231x_read_reg(AR2315_AMBACLK));
+}
+
+void __init
+ar2315_time_init(void)
+{
+	if (!is_2315())
+		return;
+
+	mips_hpt_frequency = ar2315_cpu_frequency() / 2;
+}
+
+int __init
+ar2315_gpio_init(void)
+{
+	int ret;
+	struct ar231x_gpio_chip *gpch;
+	gpch = &ar2315_gpio_chip;
+	ret = gpiochip_add(&gpch->chip);
+	if (ret) {
+		pr_err("%s: failed to add gpiochip\n", gpch->chip.label);
+		return ret;
+	}
+	pr_info("%s: registered %d GPIOs\n", gpch->chip.label,
+		gpch->chip.ngpio);
+	return ret;
+}
+
+
+
+void __init
+ar2315_prom_init(void)
+{
+	u32 memsize, memcfg, devid;
+
+	if (!is_2315())
+		return;
+
+	memcfg = ar231x_read_reg(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);
+
+	/* Detect the hardware based on the device ID */
+	devid = ar231x_read_reg(AR2315_SREV) & AR2315_REV_CHIP;
+	switch (devid) {
+	case 0x90:
+	case 0x91:
+		ar231x_devtype = DEV_TYPE_AR2317;
+		break;
+	default:
+		ar231x_devtype = DEV_TYPE_AR2315;
+		break;
+	}
+	ar2315_gpio_init();
+	ar231x_board.devid = devid;
+}
+
+void __init
+ar2315_plat_setup(void)
+{
+	u32 config;
+
+	if (!is_2315())
+		return;
+
+	/* Clear any lingering AHB errors */
+	config = read_c0_config();
+	write_c0_config(config & ~0x3);
+	ar231x_write_reg(AR2315_AHB_ERR0, AHB_ERROR_DET);
+	ar231x_read_reg(AR2315_AHB_ERR1);
+	ar231x_write_reg(AR2315_WDC, AR2315_WDC_IGNORE_EXPIRATION);
+
+	_machine_restart = ar2315_restart;
+	ar231x_serial_setup(KSEG1ADDR(AR2315_UART0), AR531X_MISC_IRQ_UART0,
+			    ar2315_apb_frequency());
+}
--- /dev/null
+++ b/arch/mips/ar231x/ar2315.h
@@ -0,0 +1,37 @@
+#ifndef __AR2315_H
+#define __AR2315_H
+
+#ifdef CONFIG_ATHEROS_AR2315
+
+extern void ar2315_irq_init(void);
+extern int ar2315_init_devices(void);
+extern void ar2315_prom_init(void);
+extern void ar2315_plat_setup(void);
+extern void ar2315_time_init(void);
+
+#else
+
+static inline void ar2315_irq_init(void)
+{
+}
+
+static inline int ar2315_init_devices(void)
+{
+	return 0;
+}
+
+static inline void ar2315_prom_init(void)
+{
+}
+
+static inline void ar2315_plat_setup(void)
+{
+}
+
+static inline void ar2315_time_init(void)
+{
+}
+
+#endif
+
+#endif
--- /dev/null
+++ b/arch/mips/ar231x/ar5312.h
@@ -0,0 +1,38 @@
+#ifndef __AR5312_H
+#define __AR5312_H
+
+#ifdef CONFIG_ATHEROS_AR5312
+
+extern void ar5312_irq_init(void);
+extern int ar5312_init_devices(void);
+extern void ar5312_prom_init(void);
+extern void ar5312_plat_setup(void);
+extern void ar5312_time_init(void);
+extern void ar5312_time_init(void);
+
+#else
+
+static inline void ar5312_irq_init(void)
+{
+}
+
+static inline int ar5312_init_devices(void)
+{
+	return 0;
+}
+
+static inline void ar5312_prom_init(void)
+{
+}
+
+static inline void ar5312_plat_setup(void)
+{
+}
+
+static inline void ar5312_time_init(void)
+{
+}
+
+#endif
+
+#endif
--- /dev/null
+++ b/arch/mips/include/asm/mach-ar231x/ar231x.h
@@ -0,0 +1,57 @@
+#ifndef __AR531X_H
+#define __AR531X_H
+
+#include <linux/types.h>
+#include <linux/io.h>
+
+#define AR531X_MISC_IRQ_BASE		0x20
+#define AR531X_GPIO_IRQ_BASE		0x30
+
+/* Software's idea of interrupts handled by "CPU Interrupt Controller" */
+#define AR531X_IRQ_NONE		(MIPS_CPU_IRQ_BASE+0)
+#define AR531X_IRQ_CPU_CLOCK	(MIPS_CPU_IRQ_BASE+7) /* C0_CAUSE: 0x8000 */
+
+/* Miscellaneous interrupts, which share IP6 */
+#define AR531X_MISC_IRQ_NONE		(AR531X_MISC_IRQ_BASE+0)
+#define AR531X_MISC_IRQ_TIMER		(AR531X_MISC_IRQ_BASE+1)
+#define AR531X_MISC_IRQ_AHB_PROC	(AR531X_MISC_IRQ_BASE+2)
+#define AR531X_MISC_IRQ_AHB_DMA		(AR531X_MISC_IRQ_BASE+3)
+#define AR531X_MISC_IRQ_GPIO		(AR531X_MISC_IRQ_BASE+4)
+#define AR531X_MISC_IRQ_UART0		(AR531X_MISC_IRQ_BASE+5)
+#define AR531X_MISC_IRQ_UART0_DMA	(AR531X_MISC_IRQ_BASE+6)
+#define AR531X_MISC_IRQ_WATCHDOG	(AR531X_MISC_IRQ_BASE+7)
+#define AR531X_MISC_IRQ_LOCAL		(AR531X_MISC_IRQ_BASE+8)
+#define AR531X_MISC_IRQ_SPI		(AR531X_MISC_IRQ_BASE+9)
+#define AR531X_MISC_IRQ_COUNT		10
+
+/* GPIO Interrupts [0..7], share AR531X_MISC_IRQ_GPIO */
+#define AR531X_GPIO_IRQ_NONE            (AR531X_GPIO_IRQ_BASE+0)
+#define AR531X_GPIO_IRQ(n)              (AR531X_GPIO_IRQ_BASE+n)
+#define AR531X_GPIO_IRQ_COUNT           22
+
+static inline u32
+ar231x_read_reg(u32 reg)
+{
+	return __raw_readl((void __iomem *)KSEG1ADDR(reg));
+}
+
+static inline void
+ar231x_write_reg(u32 reg, u32 val)
+{
+	__raw_writel(val, (void __iomem *)KSEG1ADDR(reg));
+}
+
+static inline u32
+ar231x_mask_reg(u32 reg, u32 mask, u32 val)
+{
+	u32 ret;
+
+	ret = ar231x_read_reg(reg);
+	ret &= ~mask;
+	ret |= val;
+	ar231x_write_reg(reg, ret);
+
+	return ret;
+}
+
+#endif
--- /dev/null
+++ b/arch/mips/ar231x/devices.h
@@ -0,0 +1,42 @@
+#ifndef __AR231X_DEVICES_H
+#define __AR231X_DEVICES_H
+#include <linux/gpio.h>
+
+enum {
+	/* handled by ar5312.c */
+	DEV_TYPE_AR2312,
+	DEV_TYPE_AR2313,
+	DEV_TYPE_AR5312,
+
+	/* handled by ar2315.c */
+	DEV_TYPE_AR2315,
+	DEV_TYPE_AR2316,
+	DEV_TYPE_AR2317,
+
+	DEV_TYPE_UNKNOWN
+};
+
+extern int ar231x_devtype;
+extern struct ar231x_board_config ar231x_board;
+extern asmlinkage void (*ar231x_irq_dispatch)(void);
+
+extern int ar231x_find_config(u8 *flash_limit);
+extern void ar231x_serial_setup(u32 mapbase, int irq, unsigned int uartclk);
+extern int ar231x_add_wmac(int nr, u32 base, int irq);
+extern int ar231x_add_ethernet(int nr, u32 base, int irq, void *pdata);
+
+static inline bool is_2315(void)
+{
+	return (current_cpu_data.cputype == CPU_4KEC);
+}
+
+static inline bool is_5312(void)
+{
+	return !is_2315();
+}
+
+struct ar231x_gpio_chip {
+	u32 valid_mask;
+	struct gpio_chip chip;
+};
+#endif
--- /dev/null
+++ b/arch/mips/ar231x/devices.c
@@ -0,0 +1,168 @@
+#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 <ar231x_platform.h>
+#include <ar231x.h>
+#include "devices.h"
+#include "ar5312.h"
+#include "ar2315.h"
+
+struct ar231x_board_config ar231x_board;
+int ar231x_devtype = DEV_TYPE_UNKNOWN;
+
+static struct resource ar231x_eth0_res[] = {
+	{
+		.name = "eth0_membase",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "eth0_irq",
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct resource ar231x_eth1_res[] = {
+	{
+		.name = "eth1_membase",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "eth1_irq",
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct platform_device ar231x_eth[] = {
+	{
+		.id = 0,
+		.name = "ar231x-eth",
+		.resource = ar231x_eth0_res,
+		.num_resources = ARRAY_SIZE(ar231x_eth0_res)
+	},
+	{
+		.id = 1,
+		.name = "ar231x-eth",
+		.resource = ar231x_eth1_res,
+		.num_resources = ARRAY_SIZE(ar231x_eth1_res)
+	}
+};
+
+static struct resource ar231x_wmac0_res[] = {
+	{
+		.name = "wmac0_membase",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "wmac0_irq",
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+static struct resource ar231x_wmac1_res[] = {
+	{
+		.name = "wmac1_membase",
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name = "wmac1_irq",
+		.flags = IORESOURCE_IRQ,
+	}
+};
+
+
+static struct platform_device ar231x_wmac[] = {
+	{
+		.id = 0,
+		.name = "ar231x-wmac",
+		.resource = ar231x_wmac0_res,
+		.num_resources = ARRAY_SIZE(ar231x_wmac0_res),
+		.dev.platform_data = &ar231x_board,
+	},
+	{
+		.id = 1,
+		.name = "ar231x-wmac",
+		.resource = ar231x_wmac1_res,
+		.num_resources = ARRAY_SIZE(ar231x_wmac1_res),
+		.dev.platform_data = &ar231x_board,
+	},
+};
+
+static const char * const devtype_strings[] = {
+	[DEV_TYPE_AR5312] = "Atheros AR5312",
+	[DEV_TYPE_AR2312] = "Atheros AR2312",
+	[DEV_TYPE_AR2313] = "Atheros AR2313",
+	[DEV_TYPE_AR2315] = "Atheros AR2315",
+	[DEV_TYPE_AR2316] = "Atheros AR2316",
+	[DEV_TYPE_AR2317] = "Atheros AR2317",
+	[DEV_TYPE_UNKNOWN] = "Atheros (unknown)",
+};
+
+const char *get_system_type(void)
+{
+	if ((ar231x_devtype >= ARRAY_SIZE(devtype_strings)) ||
+		!devtype_strings[ar231x_devtype])
+		return devtype_strings[DEV_TYPE_UNKNOWN];
+	return devtype_strings[ar231x_devtype];
+}
+
+
+int __init
+ar231x_add_ethernet(int nr, u32 base, int irq, void *pdata)
+{
+	struct resource *res;
+
+	ar231x_eth[nr].dev.platform_data = pdata;
+	res = &ar231x_eth[nr].resource[0];
+	res->start = base;
+	res->end = base + 0x2000 - 1;
+	res++;
+	res->start = irq;
+	res->end = irq;
+	return platform_device_register(&ar231x_eth[nr]);
+}
+
+void __init
+ar231x_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;
+	s.iotype = UPIO_MEM;
+	s.irq = irq;
+	s.regshift = 2;
+	s.mapbase = mapbase;
+	s.uartclk = uartclk;
+	s.membase = (void __iomem *)s.mapbase;
+
+	early_serial_setup(&s);
+}
+
+int __init
+ar231x_add_wmac(int nr, u32 base, int irq)
+{
+	struct resource *res;
+
+	ar231x_wmac[nr].dev.platform_data = &ar231x_board;
+	res = &ar231x_wmac[nr].resource[0];
+	res->start = base;
+	res->end = base + 0x10000 - 1;
+	res++;
+	res->start = irq;
+	res->end = irq;
+	return platform_device_register(&ar231x_wmac[nr]);
+}
+
+static int __init ar231x_register_devices(void)
+{
+	ar5312_init_devices();
+	ar2315_init_devices();
+
+	return 0;
+}
+
+device_initcall(ar231x_register_devices);