add basic support for Fonera devices (nfsroot) via OpenWrt/FreeWRT kernel patches

4 files changed, 6355 insertions, 0 deletions

diff --git a/target/config/Config.in b/target/config/Config.in
index 7dd6c1947..ff8668b35 100644
--- a/target/config/Config.in
+++ b/target/config/Config.in
@@ -180,6 +180,7 @@ config ADK_TARGET_CFLAGS
 
 config ADK_TARGET_CMDLINE
 	string
+	default "console=ttyS0,9600" if ADK_TARGET_SYSTEM_FON_FON2100
 	default "console=ttyS0,38400" if ADK_TARGET_SYSTEM_PCENGINES_WRAP
 	default "console=ttyS0,115200 console=tty0 geodewdt.nowayout=1" if ADK_TARGET_SYSTEM_PCENGINES_ALIX1C
 	default "console=ttyS0,115200 console=tty0" if ADK_TARGET_SYSTEM_IBM_X40
diff --git a/target/linux/config/Config.in.netdevice b/target/linux/config/Config.in.netdevice
index 6c30397a4..a0ec08247 100644
--- a/target/linux/config/Config.in.netdevice
+++ b/target/linux/config/Config.in.netdevice
@@ -7,6 +7,9 @@ config ADK_KERNEL_NETDEVICES
 config ADK_KERNEL_NET_ETHERNET
 	boolean
 
+config ADK_KERNEL_PHYLIB
+	boolean
+
 config ADK_KERNEL_MII
 	boolean
 
@@ -62,6 +65,17 @@ config ADK_KERNEL_VIA_RHINE
 	default n
 	help
 
+config ADK_KERNEL_AR231X_ETHERNET
+	boolean
+	select ADK_KERNEL_NETDEVICES
+	select ADK_KERNEL_NET_ETHERNET
+	select ADK_KERNEL_NET_PCI
+	select ADK_KERNEL_MII
+	select ADK_KERNEL_PHYLIB
+	default y if ADK_TARGET_SYSTEM_FON_FON2100
+	default n
+	help
+
 config ADK_KERNEL_KORINA
 	boolean
 	select ADK_KERNEL_NETDEVICES
diff --git a/target/linux/patches/2.6.37/atheros.patch b/target/linux/patches/2.6.37/atheros.patch
new file mode 100644
index 000000000..ee5184a00
--- /dev/null
+++ b/target/linux/patches/2.6.37/atheros.patch
@@ -0,0 +1,6332 @@
+diff -Nur linux-2.6.37.orig/arch/mips/Kbuild.platforms linux-2.6.37/arch/mips/Kbuild.platforms
+--- linux-2.6.37.orig/arch/mips/Kbuild.platforms	2011-01-05 01:50:19.000000000 +0100
++++ linux-2.6.37/arch/mips/Kbuild.platforms	2011-04-12 08:12:01.000000000 +0200
+@@ -5,6 +5,7 @@
+ platforms += bcm47xx
+ platforms += bcm63xx
+ platforms += cavium-octeon
++platforms += ar231x
+ platforms += cobalt
+ platforms += dec
+ platforms += emma
+diff -Nur linux-2.6.37.orig/arch/mips/Kconfig linux-2.6.37/arch/mips/Kconfig
+--- linux-2.6.37.orig/arch/mips/Kconfig	2011-01-05 01:50:19.000000000 +0100
++++ linux-2.6.37/arch/mips/Kconfig	2011-04-12 08:12:01.000000000 +0200
+@@ -102,6 +102,20 @@
+ 	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 GENERIC_GPIO
++	select SYS_HAS_EARLY_PRINTK
++	help
++	  Support for AR231x and AR531x based boards
++
+ config MIPS_COBALT
+ 	bool "Cobalt Server"
+ 	select CEVT_R4K
+@@ -716,6 +730,7 @@
+ 
+ endchoice
+ 
++source "arch/mips/ar231x/Kconfig"
+ source "arch/mips/alchemy/Kconfig"
+ source "arch/mips/bcm63xx/Kconfig"
+ source "arch/mips/jazz/Kconfig"
+diff -Nur linux-2.6.37.orig/arch/mips/ar231x/Kconfig linux-2.6.37/arch/mips/ar231x/Kconfig
+--- linux-2.6.37.orig/arch/mips/ar231x/Kconfig	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.37/arch/mips/ar231x/Kconfig	2011-04-12 08:12:33.000000000 +0200
+@@ -0,0 +1,27 @@
++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
++	select GENERIC_GPIO
++	default y
++
++config ATHEROS_AR2315_PCI
++	bool "PCI support"
++	depends on ATHEROS_AR2315
++	select HW_HAS_PCI
++	select PCI
++	select USB_ARCH_HAS_HCD
++	select USB_ARCH_HAS_OHCI
++	select USB_ARCH_HAS_EHCI
++	default y
+diff -Nur linux-2.6.37.orig/arch/mips/ar231x/Makefile linux-2.6.37/arch/mips/ar231x/Makefile
+--- linux-2.6.37.orig/arch/mips/ar231x/Makefile	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.37/arch/mips/ar231x/Makefile	2011-04-12 08:12:01.000000000 +0200
+@@ -0,0 +1,17 @@
++#
++# 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-$(CONFIG_EARLY_PRINTK) += early_printk.o
++
++obj-$(CONFIG_ATHEROS_AR5312) += ar5312.o
++obj-$(CONFIG_ATHEROS_AR2315) += ar2315.o
++obj-$(CONFIG_ATHEROS_AR2315_PCI) += pci.o
+diff -Nur linux-2.6.37.orig/arch/mips/ar231x/Platform linux-2.6.37/arch/mips/ar231x/Platform
+--- linux-2.6.37.orig/arch/mips/ar231x/Platform	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.37/arch/mips/ar231x/Platform	2011-04-12 08:12:01.000000000 +0200
+@@ -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
+diff -Nur linux-2.6.37.orig/arch/mips/ar231x/ar2315.c linux-2.6.37/arch/mips/ar231x/ar2315.c
+--- linux-2.6.37.orig/arch/mips/ar231x/ar2315.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.37/arch/mips/ar231x/ar2315.c	2011-04-12 08:12:01.000000000 +0200
+@@ -0,0 +1,683 @@
++/*
++ * 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>
++ */
++
++/*
++ * 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 <asm/bootinfo.h>
++#include <asm/reboot.h>
++#include <asm/time.h>
++#include <asm/irq.h>
++#include <asm/io.h>
++#include <asm/gpio.h>
++
++#include <ar231x_platform.h>
++#include <ar2315_regs.h>
++#include <ar231x.h>
++#include "devices.h"
++#include "ar2315.h"
++
++static u32 gpiointmask = 0, gpiointval = 0;
++
++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);
++}
++
++#ifdef CONFIG_ATHEROS_AR2315_PCI
++static inline void pci_abort_irq(void)
++{
++	ar231x_write_reg(AR2315_PCI_INT_STATUS, AR2315_PCI_ABORT_INT);
++}
++
++static inline void pci_ack_irq(void)
++{
++	ar231x_write_reg(AR2315_PCI_INT_STATUS, AR2315_PCI_EXT_INT);
++}
++
++void ar2315_pci_irq(int irq)
++{
++	if (ar231x_read_reg(AR2315_PCI_INT_STATUS) == AR2315_PCI_ABORT_INT)
++		pci_abort_irq();
++	else {
++		do_IRQ(irq);
++		pci_ack_irq();
++	}
++}
++#endif /* CONFIG_ATHEROS_AR2315_PCI */
++
++/*
++ * 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);
++#ifdef CONFIG_ATHEROS_AR2315_PCI
++	else if (pending & CAUSEF_IP5)
++		ar2315_pci_irq(AR2315_IRQ_LCBUS_PCI);
++#endif
++	else if (pending & CAUSEF_IP2) {
++		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)
++			do_IRQ(AR531X_MISC_IRQ_WATCHDOG);
++		else
++			do_IRQ(AR531X_MISC_IRQ_NONE);
++	} 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(unsigned int irq)
++{
++	unsigned int gpio = 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 unsigned int ar2315_gpio_intr_startup(unsigned int irq)
++{
++	unsigned int gpio = irq - AR531X_GPIO_IRQ_BASE;
++
++	/* reconfigure GPIO line as input */
++	ar231x_mask_reg(AR2315_GPIO_CR, AR2315_GPIO_CR_M(gpio), AR2315_GPIO_CR_I(gpio));
++	ar2315_gpio_intr_enable(irq);
++	return 0;
++}
++
++static void ar2315_gpio_intr_disable(unsigned int irq)
++{
++	unsigned int gpio = irq - AR531X_GPIO_IRQ_BASE;
++
++	/* Disable interrupt */
++	gpiointmask &= ~(1 << gpio);
++	ar2315_set_gpiointmask(gpio, 0);
++}
++
++static void
++ar2315_gpio_intr_end(unsigned int irq)
++{
++	if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
++		ar2315_gpio_intr_enable(irq);
++}
++
++static struct irq_chip ar2315_gpio_intr_controller = {
++	.name	= "AR2315-GPIO",
++	.startup  = ar2315_gpio_intr_startup,
++	.ack      = ar2315_gpio_intr_disable,
++	.mask_ack = ar2315_gpio_intr_disable,
++	.mask     = ar2315_gpio_intr_disable,
++	.unmask   = ar2315_gpio_intr_enable,
++	.end      = ar2315_gpio_intr_end,
++};
++
++static void
++ar2315_misc_intr_enable(unsigned int irq)
++{
++	unsigned int imr;
++
++	imr = ar231x_read_reg(AR2315_IMR);
++	switch(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(unsigned int irq)
++{
++	unsigned int imr;
++
++	imr = ar231x_read_reg(AR2315_IMR);
++	switch(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_end(unsigned int irq)
++{
++	if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
++		ar2315_misc_intr_enable(irq);
++}
++
++
++static struct irq_chip ar2315_misc_intr_controller = {
++	.name	= "AR2315-MISC",
++	.ack      = ar2315_misc_intr_disable,
++	.mask_ack = ar2315_misc_intr_disable,
++	.mask     = ar2315_misc_intr_disable,
++	.unmask   = ar2315_misc_intr_enable,
++	.end      = ar2315_misc_intr_end,
++};
++
++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);
++
++    printk(KERN_ERR "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,
++	.flags		= IRQF_DISABLED,
++	.name		= "ar2315_ahb_proc_interrupt",
++};
++
++static struct irqaction cascade  = {
++	.handler	= no_action,
++	.flags		= IRQF_DISABLED,
++	.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;
++		set_irq_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;
++		set_irq_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);
++}
++
++const struct ar231x_gpiodev ar2315_gpiodev;
++
++static u32
++ar2315_gpio_get_output(void)
++{
++	u32 reg;
++	reg = ar231x_read_reg(AR2315_GPIO_CR);
++	reg &= ar2315_gpiodev.valid_mask;
++	return reg;
++}
++
++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(void)
++{
++	u32 reg;
++	reg = ar231x_read_reg(AR2315_GPIO_DI);
++	reg &= ar2315_gpiodev.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;
++}
++
++const struct ar231x_gpiodev ar2315_gpiodev = {
++	.valid_mask = (1 << 22) - 1,
++	.get_output = ar2315_gpio_get_output,
++	.set_output = ar2315_gpio_set_output,
++	.get = ar2315_gpio_get,
++	.set = ar2315_gpio_set,
++};
++
++static struct ar231x_eth ar2315_eth_data = {
++	.reset_base = AR2315_RESET,
++	.reset_mac = AR2315_RESET_ENET0,
++	.reset_phy = AR2315_RESET_EPHY0,
++	.phy_base = AR2315_ENET0,
++	.config = &ar231x_board,
++};
++
++static struct resource ar2315_spiflash_res[] = {
++	{
++		.name = "flash_base",
++		.flags = IORESOURCE_MEM,
++		.start = KSEG1ADDR(AR2315_SPI_READ),
++		.end = KSEG1ADDR(AR2315_SPI_READ) + 0x1000000 - 1,
++	},
++	{
++		.name = "flash_regs",
++		.flags = IORESOURCE_MEM,
++		.start = 0x11300000,
++		.end = 0x11300012,
++	},
++};
++
++static struct platform_device ar2315_spiflash = {
++	.id = 0,
++	.name = "spiflash",
++	.resource = ar2315_spiflash_res,
++	.num_resources = ARRAY_SIZE(ar2315_spiflash_res)
++};
++
++static struct platform_device ar2315_wdt = {
++	.id = 0,
++	.name = "ar2315_wdt",
++};
++
++#define SPI_FLASH_CTL      0x00
++#define SPI_FLASH_OPCODE   0x04
++#define SPI_FLASH_DATA     0x08
++
++static inline u32
++spiflash_read_reg(int reg)
++{
++	return ar231x_read_reg(KSEG1ADDR(AR2315_SPI) + reg);
++}
++
++static inline void
++spiflash_write_reg(int reg, u32 data)
++{
++	ar231x_write_reg(KSEG1ADDR(AR2315_SPI) + reg, data);
++}
++
++static u32
++spiflash_wait_status(void)
++{
++	u32 reg;
++
++	do {
++		reg = spiflash_read_reg(SPI_FLASH_CTL);
++	} while (reg & SPI_CTL_BUSY);
++
++	return reg;
++}
++
++static u8
++spiflash_probe(void)
++{
++	u32 reg;
++
++	reg = spiflash_wait_status();
++	reg &= ~SPI_CTL_TX_RX_CNT_MASK;
++	reg |= (1 << 4) | 4 | SPI_CTL_START;
++
++	spiflash_write_reg(SPI_FLASH_OPCODE, 0xab);
++	spiflash_write_reg(SPI_FLASH_CTL, reg);
++
++	reg = spiflash_wait_status();
++	reg = spiflash_read_reg(SPI_FLASH_DATA);
++	reg &= 0xff;
++
++	return (u8) reg;
++}
++
++
++#define STM_8MBIT_SIGNATURE     0x13
++#define STM_16MBIT_SIGNATURE    0x14
++#define STM_32MBIT_SIGNATURE    0x15
++#define STM_64MBIT_SIGNATURE    0x16
++#define STM_128MBIT_SIGNATURE   0x17
++
++static u8 __init *
++ar2315_flash_limit(void)
++{
++	u32 flash_size = 0;
++
++	/* probe the flash chip size */
++	switch(spiflash_probe()) {
++		case STM_8MBIT_SIGNATURE:
++			flash_size = 0x00100000;
++			break;
++		case STM_16MBIT_SIGNATURE:
++			flash_size = 0x00200000;
++			break;
++		case STM_32MBIT_SIGNATURE:
++			flash_size = 0x00400000;
++			break;
++		case STM_64MBIT_SIGNATURE:
++			flash_size = 0x00800000;
++			break;
++		case STM_128MBIT_SIGNATURE:
++			flash_size = 0x01000000;
++			break;
++	}
++
++	ar2315_spiflash_res[0].end = ar2315_spiflash_res[0].start +
++		flash_size - 1;
++	return (u8 *) 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(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->resetConfigGpio))
++			continue;
++
++		if(i == ar231x_board.config->sysLedGpio)
++			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(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();
++	platform_device_register(&ar2315_wdt);
++	platform_device_register(&ar2315_spiflash);
++	ar231x_add_ethernet(0, 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_direction_output(AR2315_RESET_GPIO, 0);
++	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 __initdata CLOCKCTL1_PREDIVIDE_TABLE[4] = { 1, 2, 4, 5 };
++static int __initdata PLLC_DIVIDE_TABLE[5] = { 2, 3, 4, 6, 3 };
++
++static unsigned int __init
++ar2315_sys_clk(unsigned int clockCtl)
++{
++    unsigned int pllcCtrl,cpuDiv;
++    unsigned int pllcOut,refdiv,fdiv,divby2;
++	unsigned int clkDiv;
++
++    pllcCtrl = ar231x_read_reg(AR2315_PLLC_CTL);
++    refdiv = (pllcCtrl & PLLC_REF_DIV_M) >> PLLC_REF_DIV_S;
++    refdiv = CLOCKCTL1_PREDIVIDE_TABLE[refdiv];
++    fdiv = (pllcCtrl & PLLC_FDBACK_DIV_M) >> PLLC_FDBACK_DIV_S;
++    divby2 = (pllcCtrl & PLLC_ADD_FDBACK_DIV_M) >> PLLC_ADD_FDBACK_DIV_S;
++    divby2 += 1;
++    pllcOut = (40000000/refdiv)*(2*divby2)*fdiv;
++
++
++    /* clkm input selected */
++	switch(clockCtl & CPUCLK_CLK_SEL_M) {
++		case 0:
++		case 1:
++			clkDiv = PLLC_DIVIDE_TABLE[(pllcCtrl & PLLC_CLKM_DIV_M) >> PLLC_CLKM_DIV_S];
++			break;
++		case 2:
++			clkDiv = PLLC_DIVIDE_TABLE[(pllcCtrl & PLLC_CLKC_DIV_M) >> PLLC_CLKC_DIV_S];
++			break;
++		default:
++			pllcOut = 40000000;
++			clkDiv = 1;
++			break;
++	}
++	cpuDiv = (clockCtl & CPUCLK_CLK_DIV_M) >> CPUCLK_CLK_DIV_S;
++	cpuDiv = cpuDiv * 2 ?: 1;
++	return (pllcOut/(clkDiv * cpuDiv));
++}
++
++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;
++}
++
++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;
++	}
++	ar231x_gpiodev = &ar2315_gpiodev;
++	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), ar2315_apb_frequency());
++}
+diff -Nur linux-2.6.37.orig/arch/mips/ar231x/ar2315.h linux-2.6.37/arch/mips/ar231x/ar2315.h
+--- linux-2.6.37.orig/arch/mips/ar231x/ar2315.h	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.37/arch/mips/ar231x/ar2315.h	2011-04-12 08:12:01.000000000 +0200
+@@ -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
+diff -Nur linux-2.6.37.orig/arch/mips/ar231x/ar5312.c linux-2.6.37/arch/mips/ar231x/ar5312.c
+--- linux-2.6.37.orig/arch/mips/ar231x/ar5312.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.37/arch/mips/ar231x/ar5312.c	2011-04-12 08:12:01.000000000 +0200
+@@ -0,0 +1,549 @@
++/*
++ * 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>
++ */
++
++/*
++ * 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 <asm/bootinfo.h>
++#include <asm/reboot.h>
++#include <asm/time.h>
++#include <asm/irq.h>
++#include <asm/io.h>
++#include <gpio.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(unsigned int irq)
++{
++	unsigned int imr;
++
++	imr = ar231x_read_reg(AR531X_IMR);
++	imr |= (1 << (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(unsigned int irq)
++{
++	unsigned int imr;
++
++	imr = ar231x_read_reg(AR531X_IMR);
++	imr &= ~(1 << (irq - AR531X_MISC_IRQ_BASE - 1));
++	ar231x_write_reg(AR531X_IMR, imr);
++	ar231x_read_reg(AR531X_IMR); /* flush write buffer */
++}
++
++static void
++ar5312_misc_intr_end(unsigned int irq)
++{
++	if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
++		ar5312_misc_intr_enable(irq);
++}
++
++static struct irq_chip ar5312_misc_intr_controller = {
++	.name     = "AR5312-MISC",
++	.disable  = ar5312_misc_intr_disable,
++	.ack      = ar5312_misc_intr_disable,
++	.mask_ack = ar5312_misc_intr_disable,
++	.mask     = ar5312_misc_intr_disable,
++	.unmask   = ar5312_misc_intr_enable,
++	.end      = ar5312_misc_intr_end,
++};
++
++
++static irqreturn_t ar5312_ahb_proc_handler(int cpl, void *dev_id)
++{
++	u32 proc1 = ar231x_read_reg(AR531X_PROC1);
++	u32 procAddr = ar231x_read_reg(AR531X_PROCADDR); /* clears error state */
++	u32 dma1 = ar231x_read_reg(AR531X_DMA1);
++	u32 dmaAddr = ar231x_read_reg(AR531X_DMAADDR);   /* clears error state */
++
++	printk("AHB interrupt: PROCADDR=0x%8.8x  PROC1=0x%8.8x  DMAADDR=0x%8.8x  DMA1=0x%8.8x\n",
++			procAddr, proc1, dmaAddr, dma1);
++
++	machine_restart("AHB error"); /* Catastrophic failure */
++	return IRQ_HANDLED;
++}
++
++
++static struct irqaction ar5312_ahb_proc_interrupt  = {
++	.handler = ar5312_ahb_proc_handler,
++	.flags   = IRQF_DISABLED,
++	.name    = "ar5312_ahb_proc_interrupt",
++};
++
++
++static struct irqaction cascade  = {
++	.handler = no_action,
++	.flags   = IRQF_DISABLED,
++	.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;
++		set_irq_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);
++}
++
++const struct ar231x_gpiodev ar5312_gpiodev;
++
++static u32
++ar5312_gpio_get_output(void)
++{
++	u32 reg;
++	reg = ~(ar231x_read_reg(AR531X_GPIO_CR));
++	reg &= ar5312_gpiodev.valid_mask;
++	return reg;
++}
++
++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(void)
++{
++	u32 reg;
++	reg = ar231x_read_reg(AR531X_GPIO_DI);
++	reg &= ar5312_gpiodev.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;
++}
++
++const struct ar231x_gpiodev ar5312_gpiodev = {
++	.valid_mask = (1 << 8) - 1,
++	.get_output = ar5312_gpio_get_output,
++	.set_output = ar5312_gpio_set_output,
++	.get = ar5312_gpio_get,
++	.set = ar5312_gpio_set,
++};
++
++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_base = AR531X_RESET,
++	.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_base = AR531X_RESET,
++	.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));