[adm8668] get rid of the specific UART driver and use AMBA PL010

Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34548 3c298f89-4303-0410-b956-a3cf2f4a3e73

11 files changed, 554 insertions, 698 deletions

diff --git a/target/linux/adm8668/config-3.3 b/target/linux/adm8668/config-3.3
index efdab2e0a2..217daec861 100644
--- a/target/linux/adm8668/config-3.3
+++ b/target/linux/adm8668/config-3.3
@@ -3,6 +3,8 @@ CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
 CONFIG_ARCH_DISCARD_MEMBLOCK=y
 CONFIG_ARCH_HIBERNATION_POSSIBLE=y
 CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARM_AMBA=y
+# CONFIG_ARM_SP805_WATCHDOG is not set
 CONFIG_CEVT_R4K=y
 CONFIG_CEVT_R4K_LIB=y
 CONFIG_CMDLINE="console=ttyS0 earlyprintk"
@@ -69,8 +71,12 @@ CONFIG_PCI_DOMAINS=y
 CONFIG_PERF_USE_VMALLOC=y
 # CONFIG_PREEMPT_RCU is not set
 # CONFIG_SCSI_DMA is not set
-CONFIG_SERIAL_ADM8668=y
-CONFIG_SERIAL_ADM8668_CONSOLE=y
+# CONFIG_SERIAL_8250 is not set
+CONFIG_SERIAL_AMBA_PL010=y
+CONFIG_SERIAL_AMBA_PL010_CONSOLE=y
+CONFIG_SERIAL_AMBA_PL010_NUMPORTS=2
+CONFIG_SERIAL_AMBA_PL010_PORTNAME="ttyS"
+# CONFIG_SERIAL_AMBA_PL011 is not set
 CONFIG_SWAP_IO_SPACE=y
 CONFIG_SYS_HAS_CPU_MIPS32_R1=y
 CONFIG_SYS_HAS_EARLY_PRINTK=y
diff --git a/target/linux/adm8668/files/arch/mips/adm8668/Kconfig b/target/linux/adm8668/files/arch/mips/adm8668/Kconfig
new file mode 100644
index 0000000000..2e7281ff0a
--- /dev/null
+++ b/target/linux/adm8668/files/arch/mips/adm8668/Kconfig
@@ -0,0 +1,2 @@
+config ARM_AMBA
+	def_bool y
diff --git a/target/linux/adm8668/files/arch/mips/adm8668/Makefile b/target/linux/adm8668/files/arch/mips/adm8668/Makefile
index dbd3f12d11..ed45666194 100644
--- a/target/linux/adm8668/files/arch/mips/adm8668/Makefile
+++ b/target/linux/adm8668/files/arch/mips/adm8668/Makefile
@@ -2,6 +2,6 @@
 # something witty  --neutronscott
 #
 
-obj-y	 	:= irq.o pci.o prom.o platform.o serial.o proc.o \
-		   setup.o time.o early_printk.o \
+obj-y	 	:= irq.o pci.o prom.o platform.o proc.o \
+		   setup.o time.o early_printk.o clock.o \
 		   net_core.o net_intr.o
diff --git a/target/linux/adm8668/files/arch/mips/adm8668/clock.c b/target/linux/adm8668/files/arch/mips/adm8668/clock.c
new file mode 100644
index 0000000000..96d139e177
--- /dev/null
+++ b/target/linux/adm8668/files/arch/mips/adm8668/clock.c
@@ -0,0 +1,56 @@
+/*
+ * ADM8668 minimal clock support
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under the terms of the GPLv2
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+
+#include <adm8668.h>
+
+struct clk {
+	unsigned long rate;
+};
+
+static struct clk uart_clk = {
+	.rate	= ADM8668_UARTCLK_FREQ,
+};
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+	const char *name = dev_name(dev);
+
+	if (!strcmp(name, "apb:uart0"))
+		return &uart_clk;
+
+	return ERR_PTR(-ENOENT);
+}
+EXPORT_SYMBOL(clk_get);
+
+int clk_enable(struct clk *clk)
+{
+	return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+	return clk->rate;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+void clk_put(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_put);
diff --git a/target/linux/adm8668/files/arch/mips/adm8668/platform.c b/target/linux/adm8668/files/arch/mips/adm8668/platform.c
index 4c158dd749..5030565a2c 100644
--- a/target/linux/adm8668/files/arch/mips/adm8668/platform.c
+++ b/target/linux/adm8668/files/arch/mips/adm8668/platform.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
+ * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
  *
  * 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
@@ -13,6 +14,9 @@
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/ioport.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
+
 #include <asm/reboot.h>
 #include <asm/time.h>
 #include <asm/addrspace.h>
@@ -20,23 +24,31 @@
 #include <asm/io.h>
 #include <adm8668.h>
 
-static struct resource uart_resources[] = {
-	{
+static void adm8668_uart_set_mctrl(struct amba_device *dev,
+					void __iomem *base,
+					unsigned int mcrtl)
+{
+}
+
+static struct amba_pl010_data adm8668_uart0_data = {
+	.set_mctrl = adm8668_uart_set_mctrl,
+};
+
+static struct amba_device adm8668_uart0_device = {
+	.dev = {
+		.init_name	= "apb:uart0",
+		.platform_data	= &adm8668_uart0_data,
+	},
+	.res = {
 		.start		= ADM8668_UART0_BASE,
 		.end		= ADM8668_UART0_BASE + 0xF,
 		.flags		= IORESOURCE_MEM,
 	},
-	{
-		.start		= INT_LVL_UART0,
-		.flags		= IORESOURCE_IRQ,
+	.irq = {
+		INT_LVL_UART0,
+		-1
 	},
-};
-
-static struct platform_device adm8668_uart_device = {
-	.name		= "adm8668_uart",
-	.id		= 0,
-	.resource	= uart_resources,
-	.num_resources	= ARRAY_SIZE(uart_resources),
+	.periphid = 0x0041010,
 };
 
 static struct resource eth0_resources[] = {
@@ -78,13 +90,18 @@ static struct platform_device adm8668_eth1_device = {
 };
 
 static struct platform_device *adm8668_devs[] = {
-	&adm8668_uart_device,
 	&adm8668_eth0_device,
 	&adm8668_eth1_device,
 };
 
 int __devinit adm8668_devs_register(void)
 {
+	int ret;
+
+	ret = amba_device_register(&adm8668_uart0_device, &iomem_resource);
+	if (ret)
+		panic("failed to register AMBA UART");
+
 	return platform_add_devices(adm8668_devs, ARRAY_SIZE(adm8668_devs));
 }
 arch_initcall(adm8668_devs_register);
diff --git a/target/linux/adm8668/files/arch/mips/adm8668/serial.c b/target/linux/adm8668/files/arch/mips/adm8668/serial.c
deleted file mode 100644
index 7d684b8102..0000000000
--- a/target/linux/adm8668/files/arch/mips/adm8668/serial.c
+++ /dev/null
@@ -1,638 +0,0 @@
-/*
- * 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.
- *
- * ADM8668 serial driver, totally ripped the source from BCM63xx and changed
- *  all the registers to fit our hardware, and removed all the features that
- *  I didn't know because our GPL'd serial driver was way lame.
- *
- * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
- * Derived directly from bcm63xx_uart
- * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
- *
- */
-
-#if defined(CONFIG_SERIAL_ADM8668_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/console.h>
-#include <linux/clk.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/sysrq.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-#include <adm8668.h>
-
-#define ADM8668_NR_UARTS	1
-
-static struct uart_port ports[ADM8668_NR_UARTS];
-
-/*
- * handy uart register accessor
- */
-static inline unsigned int adm_uart_readl(struct uart_port *port,
-					 unsigned int offset)
-{
-	return (*(volatile unsigned int *)(port->membase + offset));
-}
-
-static inline void adm_uart_writel(struct uart_port *port,
-				  unsigned int value, unsigned int offset)
-{
-	(*((volatile unsigned int *)(port->membase + offset))) = value;
-}
-
-/*
- * serial core request to check if uart tx fifo is empty
- */
-static unsigned int adm_uart_tx_empty(struct uart_port *port)
-{
-	/* we always wait for completion, no buffer is made... */
-	return 1;
-}
-
-/*
- * serial core request to set RTS and DTR pin state and loopback mode
- */
-static void adm_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-}
-
-/*
- * serial core request to return RI, CTS, DCD and DSR pin state
- */
-static unsigned int adm_uart_get_mctrl(struct uart_port *port)
-{
-	return 0;
-}
-
-/*
- * serial core request to disable tx ASAP (used for flow control)
- */
-static void adm_uart_stop_tx(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = adm_uart_readl(port, UART_CR_REG);
-	val &= ~(UART_TX_INT_EN);
-	adm_uart_writel(port, val, UART_CR_REG);
-}
-
-/*
- * serial core request to (re)enable tx
- */
-static void adm_uart_start_tx(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = adm_uart_readl(port, UART_CR_REG);
-	val |= UART_TX_INT_EN;
-	adm_uart_writel(port, val, UART_CR_REG);
-}
-
-/*
- * serial core request to stop rx, called before port shutdown
- */
-static void adm_uart_stop_rx(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = adm_uart_readl(port, UART_CR_REG);
-	val &= ~UART_RX_INT_EN;
-	adm_uart_writel(port, val, UART_CR_REG);
-}
-
-/*
- * serial core request to enable modem status interrupt reporting
- */
-static void adm_uart_enable_ms(struct uart_port *port)
-{
-}
-
-/*
- * serial core request to start/stop emitting break char
- */
-static void adm_uart_break_ctl(struct uart_port *port, int ctl)
-{
-}
-
-/*
- * return port type in string format
- */
-static const char *adm_uart_type(struct uart_port *port)
-{
-	return (port->type == PORT_ADM8668) ? "adm8668_uart" : NULL;
-}
-
-/*
- * read all chars in rx fifo and send them to core
- */
-static void adm_uart_do_rx(struct uart_port *port)
-{
-	struct tty_struct *tty;
-	unsigned int max_count;
-
-	/* limit number of char read in interrupt, should not be
-	 * higher than fifo size anyway since we're much faster than
-	 * serial port */
-	max_count = 32;
-	tty = port->state->port.tty;
-	do {
-		unsigned int iestat, c, cstat;
-		char flag;
-
-		/* get overrun/fifo empty information from ier
-		 * register */
-		iestat = adm_uart_readl(port, UART_FR_REG);
-		if (iestat & UART_RX_FIFO_EMPTY)
-			break;
-
-		/* recieve status */
-		cstat = adm_uart_readl(port, UART_RSR_REG);
-		/* clear errors */
-		adm_uart_writel(port, cstat, UART_RSR_REG);
-
-		c = adm_uart_readl(port, UART_DR_REG);
-		port->icount.rx++;
-		flag = TTY_NORMAL;
-
-		if (unlikely((cstat & UART_RX_STATUS_MASK))) {
-			/* do stats first */
-			if (cstat & UART_BREAK_ERR) {
-				port->icount.brk++;
-				if (uart_handle_break(port))
-					continue;
-			}
-
-			if (cstat & UART_PARITY_ERR)
-				port->icount.parity++;
-			if (cstat & UART_FRAMING_ERR)
-				port->icount.frame++;
-			if (cstat & UART_OVERRUN_ERR) {
-				port->icount.overrun++;
-				tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-			}
-
-			/* update flag wrt read_status_mask */
-			cstat &= port->read_status_mask;
-			if (cstat & UART_BREAK_ERR)
-				flag = TTY_BREAK;
-			if (cstat & UART_FRAMING_ERR)
-				flag = TTY_FRAME;
-			if (cstat & UART_PARITY_ERR)
-				flag = TTY_PARITY;
-		}
-
-		if (uart_handle_sysrq_char(port, c))
-			continue;
-
-		/* fixthis */
-		if ((cstat & port->ignore_status_mask) == 0)
-			tty_insert_flip_char(tty, c, flag);
-	} while (max_count--);
-
-	tty_flip_buffer_push(tty);
-}
-
-/*
- * fill tx fifo with chars to send, stop when fifo is about to be full
- * or when all chars have been sent.
- */
-static void adm_uart_do_tx(struct uart_port *port)
-{
-	struct circ_buf *xmit;
-
-	if (port->x_char) {
-		adm_uart_writel(port, port->x_char, UART_DR_REG);
-		port->icount.tx++;
-		port->x_char = 0;
-		return;
-	}
-
-	if (uart_tx_stopped(port))
-		adm_uart_stop_tx(port);
-
-	xmit = &port->state->xmit;
-
-	if (uart_circ_empty(xmit))
-		goto txq_empty;
-	do
-	{
-		while ((adm_uart_readl(port, UART_FR_REG) & UART_TX_FIFO_FULL) != 0)
-			;
-		adm_uart_writel(port, xmit->buf[xmit->tail], UART_DR_REG);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
-		if (uart_circ_empty(xmit))
-			break;
-	} while (1);
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(port);
-
-	if (uart_circ_empty(xmit))
-		goto txq_empty;
-
-	return;
-
-txq_empty:
-	adm_uart_stop_tx(port);
-}
-
-/*
- * process uart interrupt
- */
-static irqreturn_t adm_uart_interrupt(int irq, void *dev_id)
-{
-	struct uart_port *port;
-	unsigned int irqstat;
-
-	port = dev_id;
-	spin_lock(&port->lock);
-
-	irqstat = adm_uart_readl(port, UART_IIR_REG);
-
-	if (irqstat & (UART_RX_INT|UART_RX_TIMEOUT_INT)) {
-		adm_uart_do_rx(port);
-	}
-
-	if (irqstat & UART_TX_INT) {
-		adm_uart_do_tx(port);
-	}
-	spin_unlock(&port->lock);
-	return IRQ_HANDLED;
-}
-
-/*
- * enable rx & tx operation on uart
- */
-static void adm_uart_enable(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = adm_uart_readl(port, UART_CR_REG);
-	// BREAK_INT too
-	val |= (UART_RX_INT_EN | UART_RX_TIMEOUT_INT_EN);
-	adm_uart_writel(port, val, UART_CR_REG);
-}
-
-/*
- * disable rx & tx operation on uart
- */
-static void adm_uart_disable(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = adm_uart_readl(port, UART_CR_REG);
-	val &= ~(UART_TX_INT_EN | UART_RX_INT_EN | UART_RX_TIMEOUT_INT_EN);
-	adm_uart_writel(port, val, UART_CR_REG);
-}
-
-/*
- * clear all unread data in rx fifo and unsent data in tx fifo
- */
-static void adm_uart_flush(struct uart_port *port)
-{
-	/* read any pending char to make sure all irq status are
-	 * cleared */
-	(void)adm_uart_readl(port, UART_DR_REG);
-}
-
-/*
- * serial core request to initialize uart and start rx operation
- */
-static int adm_uart_startup(struct uart_port *port)
-{
-	int ret;
-
-	/* clear any pending external input interrupt */
-	(void)adm_uart_readl(port, UART_IIR_REG);
-
-	/* register irq and enable rx interrupts */
-	ret = request_irq(port->irq, adm_uart_interrupt, 0,
-			  adm_uart_type(port), port);
-	if (ret)
-		return ret;
-
-	adm_uart_enable(port);
-
-	return 0;
-}
-
-/*
- * serial core request to flush & disable uart
- */
-static void adm_uart_shutdown(struct uart_port *port)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&port->lock, flags);
-//	adm_uart_writel(port, 0, UART_CR_REG);
-	spin_unlock_irqrestore(&port->lock, flags);
-
-	adm_uart_disable(port);
-	adm_uart_flush(port);
-	free_irq(port->irq, port);
-}
-
-/*
- * serial core request to change current uart setting
- */
-static void adm_uart_set_termios(struct uart_port *port,
-				 struct ktermios *new,
-				 struct ktermios *old)
-{
-	port->ignore_status_mask = 0;
-	uart_update_timeout(port, new->c_cflag, 115200);
-}
-
-/*
- * serial core request to claim uart iomem
- */
-static int adm_uart_request_port(struct uart_port *port)
-{
-	unsigned int size = 0xf;
-	if (!request_mem_region(port->mapbase, size, "adm8668")) {
-		dev_err(port->dev, "Memory region busy\n");
-		return -EBUSY;
-	}
-
-	port->membase = ioremap(port->mapbase, size);
-	if (!port->membase) {
-		dev_err(port->dev, "Unable to map registers\n");
-		release_mem_region(port->mapbase, size);
-		return -EBUSY;
-	}
-	return 0;
-}
-
-/*
- * serial core request to release uart iomem
- */
-static void adm_uart_release_port(struct uart_port *port)
-{
-	release_mem_region(port->mapbase, 0xf);
-	iounmap(port->membase);
-}
-
-/*
- * serial core request to do any port required autoconfiguration
- */
-static void adm_uart_config_port(struct uart_port *port, int flags)
-{
-	if (flags & UART_CONFIG_TYPE) {
-		if (adm_uart_request_port(port))
-			return;
-		port->type = PORT_ADM8668;
-	}
-}
-
-/*
- * serial core request to check that port information in serinfo are
- * suitable
- */
-static int adm_uart_verify_port(struct uart_port *port,
-				struct serial_struct *serinfo)
-{
-	if (port->type != PORT_ADM8668)
-		return -EINVAL;
-	if (port->irq != serinfo->irq)
-		return -EINVAL;
-	if (port->iotype != serinfo->io_type)
-		return -EINVAL;
-	if (port->mapbase != (unsigned long)serinfo->iomem_base)
-		return -EINVAL;
-	return 0;
-}
-
-/* serial core callbacks */
-static struct uart_ops adm_uart_ops = {
-	.tx_empty	= adm_uart_tx_empty,
-	.get_mctrl	= adm_uart_get_mctrl,
-	.set_mctrl	= adm_uart_set_mctrl,
-	.start_tx	= adm_uart_start_tx,
-	.stop_tx	= adm_uart_stop_tx,
-	.stop_rx	= adm_uart_stop_rx,
-	.enable_ms	= adm_uart_enable_ms,
-	.break_ctl	= adm_uart_break_ctl,
-	.startup	= adm_uart_startup,
-	.shutdown	= adm_uart_shutdown,
-	.set_termios	= adm_uart_set_termios,
-	.type		= adm_uart_type,
-	.release_port	= adm_uart_release_port,
-	.request_port	= adm_uart_request_port,
-	.config_port	= adm_uart_config_port,
-	.verify_port	= adm_uart_verify_port,
-};
-
-#ifdef CONFIG_SERIAL_ADM8668_CONSOLE
-static inline void wait_for_xmitr(struct uart_port *port)
-{
-        while ((adm_uart_readl(port, UART_FR_REG) & UART_TX_FIFO_FULL) != 0)
-                ;
-}
-
-/*
- * output given char
- */
-static void adm_console_putchar(struct uart_port *port, int ch)
-{
-	wait_for_xmitr(port);
-	adm_uart_writel(port, ch, UART_DR_REG);
-}
-
-/*
- * console core request to output given string
- */
-static void adm_console_write(struct console *co, const char *s,
-			      unsigned int count)
-{
-	struct uart_port *port;
-	unsigned long flags;
-	int locked;
-
-	port = &ports[co->index];
-
-	local_irq_save(flags);
-	if (port->sysrq) {
-		/* adm_uart_interrupt() already took the lock */
-		locked = 0;
-	} else if (oops_in_progress) {
-		locked = spin_trylock(&port->lock);
-	} else {
-		spin_lock(&port->lock);
-		locked = 1;
-	}
-
-	/* call helper to deal with \r\n */
-	uart_console_write(port, s, count, adm_console_putchar);
-
-	/* and wait for char to be transmitted */
-	wait_for_xmitr(port);
-
-	if (locked)
-		spin_unlock(&port->lock);
-	local_irq_restore(flags);
-}
-
-/*
- * console core request to setup given console, find matching uart
- * port and setup it.
- */
-static int adm_console_setup(struct console *co, char *options)
-{
-	struct uart_port *port;
-	int baud = 115200;
-	int bits = 8;
-	int parity = 'n';
-	int flow = 'n';
-
-	if (co->index < 0 || co->index >= ADM8668_NR_UARTS)
-		return -EINVAL;
-	port = &ports[co->index];
-	if (!port->membase)
-		return -ENODEV;
-
-	if (options)
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-
-	return uart_set_options(port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver adm_uart_driver;
-
-static struct console adm8668_console = {
-	.name		= "ttyS",
-	.write		= adm_console_write,
-	.device		= uart_console_device,
-	.setup		= adm_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-	.data		= &adm_uart_driver,
-};
-
-static int __init adm8668_console_init(void)
-{
-	register_console(&adm8668_console);
-	return 0;
-}
-
-console_initcall(adm8668_console_init);
-
-#define ADM8668_CONSOLE	(&adm8668_console)
-#else
-#define ADM8668_CONSOLE	NULL
-#endif /* CONFIG_SERIAL_ADM8668_CONSOLE */
-
-static struct uart_driver adm_uart_driver = {
-	.owner		= THIS_MODULE,
-	.driver_name	= "adm8668_uart",
-	.dev_name	= "ttyS",
-	.major		= TTY_MAJOR,
-	.minor		= 64,
-	.nr		= 1,
-	.cons		= ADM8668_CONSOLE,
-};
-
-/*
- * platform driver probe/remove callback
- */
-static int __devinit adm_uart_probe(struct platform_device *pdev)
-{
-	struct resource *res_mem, *res_irq;
-	struct uart_port *port;
-	int ret;
-
-	if (pdev->id < 0 || pdev->id >= ADM8668_NR_UARTS)
-		return -EINVAL;
-
-	if (ports[pdev->id].membase)
-		return -EBUSY;
-
-	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res_mem)
-		return -ENODEV;
-
-	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res_irq)
-		return -ENODEV;
-
-	port = &ports[pdev->id];
-	memset(port, 0, sizeof(*port));
-	port->iotype = UPIO_MEM;
-	port->mapbase = res_mem->start;
-	port->irq = res_irq->start;
-	port->ops = &adm_uart_ops;
-	port->flags = UPF_BOOT_AUTOCONF;
-	port->dev = &pdev->dev;
-	port->fifosize = 8;
-	port->uartclk = ADM8668_UARTCLK_FREQ;
-
-	ret = uart_add_one_port(&adm_uart_driver, port);
-	if (ret) {
-		ports[pdev->id].membase = 0;
-		return ret;
-	}
-	platform_set_drvdata(pdev, port);
-	return 0;
-}
-
-static int __devexit adm_uart_remove(struct platform_device *pdev)
-{
-	struct uart_port *port;
-
-	port = platform_get_drvdata(pdev);
-	uart_remove_one_port(&adm_uart_driver, port);
-	platform_set_drvdata(pdev, NULL);
-	/* mark port as free */
-	ports[pdev->id].membase = 0;
-	return 0;
-}
-
-/*
- * platform driver stuff
- */
-static struct platform_driver adm_uart_platform_driver = {
-	.probe	= adm_uart_probe,
-	.remove	= __devexit_p(adm_uart_remove),
-	.driver	= {
-		.owner = THIS_MODULE,
-		.name  = "adm8668_uart",
-	},
-};
-
-static int __init adm_uart_init(void)
-{
-	int ret;
-
-	ret = uart_register_driver(&adm_uart_driver);
-	if (ret)
-		return ret;
-
-	ret = platform_driver_register(&adm_uart_platform_driver);
-	if (ret)
-		uart_unregister_driver(&adm_uart_driver);
-
-	return ret;
-}
-
-static void __exit adm_uart_exit(void)
-{
-	platform_driver_unregister(&adm_uart_platform_driver);
-	uart_unregister_driver(&adm_uart_driver);
-}
-
-module_init(adm_uart_init);
-module_exit(adm_uart_exit);
-
-MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>");
-MODULE_DESCRIPTION("ADM8668 integrated uart driver");
-MODULE_LICENSE("GPL");
diff --git a/target/linux/adm8668/files/arch/mips/include/asm/mach-adm8668/asm/sizes.h b/target/linux/adm8668/files/arch/mips/include/asm/mach-adm8668/asm/sizes.h
new file mode 100644
index 0000000000..503843db15
--- /dev/null
+++ b/target/linux/adm8668/files/arch/mips/include/asm/mach-adm8668/asm/sizes.h
@@ -0,0 +1,56 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+/* DO NOT EDIT!! - this file automatically generated
+ *                 from .s file by awk -f s2h.awk
+ */
+/*  Size definitions
+ *  Copyright (C) ARM Limited 1998. All rights reserved.
+ */
+
+#ifndef __sizes_h
+#define __sizes_h                       1
+
+/* handy sizes */
+#define SZ_16				0x00000010
+#define SZ_256				0x00000100
+#define SZ_512				0x00000200
+
+#define SZ_1K                           0x00000400
+#define SZ_4K                           0x00001000
+#define SZ_8K                           0x00002000
+#define SZ_16K                          0x00004000
+#define SZ_64K                          0x00010000
+#define SZ_128K                         0x00020000
+#define SZ_256K                         0x00040000
+#define SZ_512K                         0x00080000
+
+#define SZ_1M                           0x00100000
+#define SZ_2M                           0x00200000
+#define SZ_4M                           0x00400000
+#define SZ_8M                           0x00800000
+#define SZ_16M                          0x01000000
+#define SZ_32M                          0x02000000
+#define SZ_64M                          0x04000000
+#define SZ_128M                         0x08000000
+#define SZ_256M                         0x10000000
+#define SZ_512M                         0x20000000
+
+#define SZ_1G                           0x40000000
+#define SZ_2G                           0x80000000
+
+#endif
+
+/*         END */
diff --git a/target/linux/adm8668/patches-3.3/001-adm8668_arch.patch b/target/linux/adm8668/patches-3.3/001-adm8668_arch.patch
index 53a627ecc1..541b0bff59 100644
--- a/target/linux/adm8668/patches-3.3/001-adm8668_arch.patch
+++ b/target/linux/adm8668/patches-3.3/001-adm8668_arch.patch
@@ -10,7 +10,7 @@
  include $(patsubst %, $(srctree)/arch/mips/%/Platform, $(platforms))
 --- a/arch/mips/Kconfig
 +++ b/arch/mips/Kconfig
-@@ -105,6 +105,27 @@ config BCM47XX
+@@ -105,6 +105,25 @@ config BCM47XX
  	help
  	 Support for BCM47XX based boards
  
@@ -28,8 +28,6 @@
 +	select SYS_SUPPORTS_32BIT_KERNEL
 +	select DMA_NONCOHERENT
 +	select SWAP_IO_SPACE
-+	select SERIAL_ADM8668
-+	select SERIAL_ADM8668_CONSOLE
 +	select SYS_HAS_EARLY_PRINTK
 +	help
 +		ADM8668 board support by neutronscott
@@ -38,3 +36,11 @@
  config BCM63XX
  	bool "Broadcom BCM63XX based boards"
  	select CEVT_R4K
+@@ -813,6 +833,7 @@ config NLM_XLP_BOARD
+ 
+ endchoice
+ 
++source "arch/mips/adm8668/Kconfig"
+ source "arch/mips/alchemy/Kconfig"
+ source "arch/mips/ath79/Kconfig"
+ source "arch/mips/bcm47xx/Kconfig"
diff --git a/target/linux/adm8668/patches-3.3/002-adm8668_uart.patch b/target/linux/adm8668/patches-3.3/002-adm8668_uart.patch
deleted file mode 100644
index ed55cbbaa8..0000000000
--- a/target/linux/adm8668/patches-3.3/002-adm8668_uart.patch
+++ /dev/null
@@ -1,40 +0,0 @@
---- a/drivers/tty/serial/Kconfig
-+++ b/drivers/tty/serial/Kconfig
-@@ -1192,6 +1192,25 @@ config SERIAL_BCM63XX_CONSOLE
- 	  If you have enabled the serial port on the bcm63xx CPU
- 	  you can make it the console by answering Y to this option.
- 
-+config SERIAL_ADM8668
-+	tristate "ADM8668 serial port support"
-+	select SERIAL_CORE
-+	depends on ADM8668
-+	help
-+	  If you have an adm8668 CPU, you can enable its onboard
-+	  serial port by enabling this options.
-+
-+          To compile this driver as a module, choose M here: the
-+          module will be called adm8668_uart.
-+
-+config SERIAL_ADM8668_CONSOLE
-+	bool "Console on adm8668 serial port"
-+	depends on SERIAL_ADM8668=y
-+	select SERIAL_CORE_CONSOLE
-+	help
-+	  If you have enabled the serial port on the adm8668 CPU
-+	  you can make it the console by answering Y to this option.
-+
- config SERIAL_GRLIB_GAISLER_APBUART
- 	tristate "GRLIB APBUART serial support"
- 	depends on OF && SPARC
---- a/include/linux/serial_core.h
-+++ b/include/linux/serial_core.h
-@@ -211,6 +211,9 @@
- #define PORT_AR933X	99
- 
- 
-+/* ADM8668 UART */
-+#define	PORT_ADM8668	100
-+
- #ifdef __KERNEL__
- 
- #include <linux/compiler.h>
diff --git a/target/linux/adm8668/patches-3.3/200-amba_pl010_hacks.patch b/target/linux/adm8668/patches-3.3/200-amba_pl010_hacks.patch
new file mode 100644
index 0000000000..3c4ea35a1d
--- /dev/null
+++ b/target/linux/adm8668/patches-3.3/200-amba_pl010_hacks.patch
@@ -0,0 +1,378 @@
+--- a/drivers/tty/serial/amba-pl010.c
++++ b/drivers/tty/serial/amba-pl010.c
+@@ -49,11 +49,10 @@
+ 
+ #include <asm/io.h>
+ 
+-#define UART_NR		8
+-
+ #define SERIAL_AMBA_MAJOR	204
+ #define SERIAL_AMBA_MINOR	16
+-#define SERIAL_AMBA_NR		UART_NR
++#define SERIAL_AMBA_NR		CONFIG_SERIAL_AMBA_PL010_NUMPORTS
++#define SERIAL_AMBA_NAME	CONFIG_SERIAL_AMBA_PL010_PORTNAME
+ 
+ #define AMBA_ISR_PASS_LIMIT	256
+ 
+@@ -79,9 +78,9 @@ static void pl010_stop_tx(struct uart_po
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ 	unsigned int cr;
+ 
+-	cr = readb(uap->port.membase + UART010_CR);
++	cr = __raw_readl(uap->port.membase + UART010_CR);
+ 	cr &= ~UART010_CR_TIE;
+-	writel(cr, uap->port.membase + UART010_CR);
++	__raw_writel(cr, uap->port.membase + UART010_CR);
+ }
+ 
+ static void pl010_start_tx(struct uart_port *port)
+@@ -89,9 +88,9 @@ static void pl010_start_tx(struct uart_p
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ 	unsigned int cr;
+ 
+-	cr = readb(uap->port.membase + UART010_CR);
++	cr = __raw_readl(uap->port.membase + UART010_CR);
+ 	cr |= UART010_CR_TIE;
+-	writel(cr, uap->port.membase + UART010_CR);
++	__raw_writel(cr, uap->port.membase + UART010_CR);
+ }
+ 
+ static void pl010_stop_rx(struct uart_port *port)
+@@ -99,9 +98,9 @@ static void pl010_stop_rx(struct uart_po
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ 	unsigned int cr;
+ 
+-	cr = readb(uap->port.membase + UART010_CR);
++	cr = __raw_readl(uap->port.membase + UART010_CR);
+ 	cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
+-	writel(cr, uap->port.membase + UART010_CR);
++	__raw_writel(cr, uap->port.membase + UART010_CR);
+ }
+ 
+ static void pl010_enable_ms(struct uart_port *port)
+@@ -109,9 +108,9 @@ static void pl010_enable_ms(struct uart_
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ 	unsigned int cr;
+ 
+-	cr = readb(uap->port.membase + UART010_CR);
++	cr = __raw_readl(uap->port.membase + UART010_CR);
+ 	cr |= UART010_CR_MSIE;
+-	writel(cr, uap->port.membase + UART010_CR);
++	__raw_writel(cr, uap->port.membase + UART010_CR);
+ }
+ 
+ static void pl010_rx_chars(struct uart_amba_port *uap)
+@@ -119,9 +118,9 @@ static void pl010_rx_chars(struct uart_a
+ 	struct tty_struct *tty = uap->port.state->port.tty;
+ 	unsigned int status, ch, flag, rsr, max_count = 256;
+ 
+-	status = readb(uap->port.membase + UART01x_FR);
++	status = __raw_readl(uap->port.membase + UART01x_FR);
+ 	while (UART_RX_DATA(status) && max_count--) {
+-		ch = readb(uap->port.membase + UART01x_DR);
++		ch = __raw_readl(uap->port.membase + UART01x_DR);
+ 		flag = TTY_NORMAL;
+ 
+ 		uap->port.icount.rx++;
+@@ -130,9 +129,9 @@ static void pl010_rx_chars(struct uart_a
+ 		 * Note that the error handling code is
+ 		 * out of the main execution path
+ 		 */
+-		rsr = readb(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
++		rsr = __raw_readl(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
+ 		if (unlikely(rsr & UART01x_RSR_ANY)) {
+-			writel(0, uap->port.membase + UART01x_ECR);
++			__raw_writel(0, uap->port.membase + UART01x_ECR);
+ 
+ 			if (rsr & UART01x_RSR_BE) {
+ 				rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
+@@ -162,7 +161,7 @@ static void pl010_rx_chars(struct uart_a
+ 		uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
+ 
+ 	ignore_char:
+-		status = readb(uap->port.membase + UART01x_FR);
++		status = __raw_readl(uap->port.membase + UART01x_FR);
+ 	}
+ 	spin_unlock(&uap->port.lock);
+ 	tty_flip_buffer_push(tty);
+@@ -175,7 +174,7 @@ static void pl010_tx_chars(struct uart_a
+ 	int count;
+ 
+ 	if (uap->port.x_char) {
+-		writel(uap->port.x_char, uap->port.membase + UART01x_DR);
++		__raw_writel(uap->port.x_char, uap->port.membase + UART01x_DR);
+ 		uap->port.icount.tx++;
+ 		uap->port.x_char = 0;
+ 		return;
+@@ -187,7 +186,7 @@ static void pl010_tx_chars(struct uart_a
+ 
+ 	count = uap->port.fifosize >> 1;
+ 	do {
+-		writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
++		__raw_writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
+ 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ 		uap->port.icount.tx++;
+ 		if (uart_circ_empty(xmit))
+@@ -205,9 +204,9 @@ static void pl010_modem_status(struct ua
+ {
+ 	unsigned int status, delta;
+ 
+-	writel(0, uap->port.membase + UART010_ICR);
++	__raw_writel(0, uap->port.membase + UART010_ICR);
+ 
+-	status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
++	status = __raw_readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+ 
+ 	delta = status ^ uap->old_status;
+ 	uap->old_status = status;
+@@ -235,7 +234,7 @@ static irqreturn_t pl010_int(int irq, vo
+ 
+ 	spin_lock(&uap->port.lock);
+ 
+-	status = readb(uap->port.membase + UART010_IIR);
++	status = __raw_readl(uap->port.membase + UART010_IIR);
+ 	if (status) {
+ 		do {
+ 			if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
+@@ -248,7 +247,7 @@ static irqreturn_t pl010_int(int irq, vo
+ 			if (pass_counter-- == 0)
+ 				break;
+ 
+-			status = readb(uap->port.membase + UART010_IIR);
++			status = __raw_readl(uap->port.membase + UART010_IIR);
+ 		} while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
+ 				   UART010_IIR_TIS));
+ 		handled = 1;
+@@ -262,7 +261,7 @@ static irqreturn_t pl010_int(int irq, vo
+ static unsigned int pl010_tx_empty(struct uart_port *port)
+ {
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+-	unsigned int status = readb(uap->port.membase + UART01x_FR);
++	unsigned int status = __raw_readl(uap->port.membase + UART01x_FR);
+ 	return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
+ }
+ 
+@@ -272,7 +271,7 @@ static unsigned int pl010_get_mctrl(stru
+ 	unsigned int result = 0;
+ 	unsigned int status;
+ 
+-	status = readb(uap->port.membase + UART01x_FR);
++	status = __raw_readl(uap->port.membase + UART01x_FR);
+ 	if (status & UART01x_FR_DCD)
+ 		result |= TIOCM_CAR;
+ 	if (status & UART01x_FR_DSR)
+@@ -298,12 +297,12 @@ static void pl010_break_ctl(struct uart_
+ 	unsigned int lcr_h;
+ 
+ 	spin_lock_irqsave(&uap->port.lock, flags);
+-	lcr_h = readb(uap->port.membase + UART010_LCRH);
++	lcr_h = __raw_readl(uap->port.membase + UART010_LCRH);
+ 	if (break_state == -1)
+ 		lcr_h |= UART01x_LCRH_BRK;
+ 	else
+ 		lcr_h &= ~UART01x_LCRH_BRK;
+-	writel(lcr_h, uap->port.membase + UART010_LCRH);
++	__raw_writel(lcr_h, uap->port.membase + UART010_LCRH);
+ 	spin_unlock_irqrestore(&uap->port.lock, flags);
+ }
+ 
+@@ -335,12 +334,12 @@ static int pl010_startup(struct uart_por
+ 	/*
+ 	 * initialise the old status of the modem signals
+ 	 */
+-	uap->old_status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
++	uap->old_status = __raw_readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+ 
+ 	/*
+ 	 * Finally, enable interrupts
+ 	 */
+-	writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
++	__raw_writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
+ 	       uap->port.membase + UART010_CR);
+ 
+ 	return 0;
+@@ -365,10 +364,10 @@ static void pl010_shutdown(struct uart_p
+ 	/*
+ 	 * disable all interrupts, disable the port
+ 	 */
+-	writel(0, uap->port.membase + UART010_CR);
++	__raw_writel(0, uap->port.membase + UART010_CR);
+ 
+ 	/* disable break condition and fifos */
+-	writel(readb(uap->port.membase + UART010_LCRH) &
++	__raw_writel(__raw_readl(uap->port.membase + UART010_LCRH) &
+ 		~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
+ 	       uap->port.membase + UART010_LCRH);
+ 
+@@ -391,7 +390,7 @@ pl010_set_termios(struct uart_port *port
+ 	/*
+ 	 * Ask the core to calculate the divisor for us.
+ 	 */
+-	baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16); 
++	baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16);
+ 	quot = uart_get_divisor(port, baud);
+ 
+ 	switch (termios->c_cflag & CSIZE) {
+@@ -454,25 +453,25 @@ pl010_set_termios(struct uart_port *port
+ 		uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
+ 
+ 	/* first, disable everything */
+-	old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
++	old_cr = __raw_readl(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
+ 
+ 	if (UART_ENABLE_MS(port, termios->c_cflag))
+ 		old_cr |= UART010_CR_MSIE;
+ 
+-	writel(0, uap->port.membase + UART010_CR);
++	__raw_writel(0, uap->port.membase + UART010_CR);
+ 
+ 	/* Set baud rate */
+ 	quot -= 1;
+-	writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
+-	writel(quot & 0xff, uap->port.membase + UART010_LCRL);
++	__raw_writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
++	__raw_writel(quot & 0xff, uap->port.membase + UART010_LCRL);
+ 
+ 	/*
+ 	 * ----------v----------v----------v----------v-----
+ 	 * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
+ 	 * ----------^----------^----------^----------^-----
+ 	 */
+-	writel(lcr_h, uap->port.membase + UART010_LCRH);
+-	writel(old_cr, uap->port.membase + UART010_CR);
++	__raw_writel(lcr_h, uap->port.membase + UART010_LCRH);
++	__raw_writel(old_cr, uap->port.membase + UART010_CR);
+ 
+ 	spin_unlock_irqrestore(&uap->port.lock, flags);
+ }
+@@ -554,7 +553,7 @@ static struct uart_ops amba_pl010_pops =
+ 	.verify_port	= pl010_verify_port,
+ };
+ 
+-static struct uart_amba_port *amba_ports[UART_NR];
++static struct uart_amba_port *amba_ports[SERIAL_AMBA_NR];
+ 
+ #ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
+ 
+@@ -564,10 +563,10 @@ static void pl010_console_putchar(struct
+ 	unsigned int status;
+ 
+ 	do {
+-		status = readb(uap->port.membase + UART01x_FR);
++		status = __raw_readl(uap->port.membase + UART01x_FR);
+ 		barrier();
+ 	} while (!UART_TX_READY(status));
+-	writel(ch, uap->port.membase + UART01x_DR);
++	__raw_writel(ch, uap->port.membase + UART01x_DR);
+ }
+ 
+ static void
+@@ -581,8 +580,8 @@ pl010_console_write(struct console *co,
+ 	/*
+ 	 *	First save the CR then disable the interrupts
+ 	 */
+-	old_cr = readb(uap->port.membase + UART010_CR);
+-	writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
++	old_cr = __raw_readl(uap->port.membase + UART010_CR);
++	__raw_writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
+ 
+ 	uart_console_write(&uap->port, s, count, pl010_console_putchar);
+ 
+@@ -591,10 +590,10 @@ pl010_console_write(struct console *co,
+ 	 *	and restore the TCR
+ 	 */
+ 	do {
+-		status = readb(uap->port.membase + UART01x_FR);
++		status = __raw_readl(uap->port.membase + UART01x_FR);
+ 		barrier();
+ 	} while (status & UART01x_FR_BUSY);
+-	writel(old_cr, uap->port.membase + UART010_CR);
++	__raw_writel(old_cr, uap->port.membase + UART010_CR);
+ 
+ 	clk_disable(uap->clk);
+ }
+@@ -603,9 +602,9 @@ static void __init
+ pl010_console_get_options(struct uart_amba_port *uap, int *baud,
+ 			     int *parity, int *bits)
+ {
+-	if (readb(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
++	if (__raw_readl(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
+ 		unsigned int lcr_h, quot;
+-		lcr_h = readb(uap->port.membase + UART010_LCRH);
++		lcr_h = __raw_readl(uap->port.membase + UART010_LCRH);
+ 
+ 		*parity = 'n';
+ 		if (lcr_h & UART01x_LCRH_PEN) {
+@@ -620,8 +619,8 @@ pl010_console_get_options(struct uart_am
+ 		else
+ 			*bits = 8;
+ 
+-		quot = readb(uap->port.membase + UART010_LCRL) |
+-		       readb(uap->port.membase + UART010_LCRM) << 8;
++		quot = __raw_readl(uap->port.membase + UART010_LCRL) |
++		       __raw_readl(uap->port.membase + UART010_LCRM) << 8;
+ 		*baud = uap->port.uartclk / (16 * (quot + 1));
+ 	}
+ }
+@@ -640,7 +639,7 @@ static int __init pl010_console_setup(st
+ 	 * if so, search for the first available port that does have
+ 	 * console support.
+ 	 */
+-	if (co->index >= UART_NR)
++	if (co->index >= SERIAL_AMBA_NR)
+ 		co->index = 0;
+ 	uap = amba_ports[co->index];
+ 	if (!uap)
+@@ -662,7 +661,7 @@ static int __init pl010_console_setup(st
+ 
+ static struct uart_driver amba_reg;
+ static struct console amba_console = {
+-	.name		= "ttyAM",
++	.name		= SERIAL_AMBA_NAME,
+ 	.write		= pl010_console_write,
+ 	.device		= uart_console_device,
+ 	.setup		= pl010_console_setup,
+@@ -678,11 +677,11 @@ static struct console amba_console = {
+ 
+ static struct uart_driver amba_reg = {
+ 	.owner			= THIS_MODULE,
+-	.driver_name		= "ttyAM",
+-	.dev_name		= "ttyAM",
++	.driver_name		= SERIAL_AMBA_NAME,
++	.dev_name		= SERIAL_AMBA_NAME,
+ 	.major			= SERIAL_AMBA_MAJOR,
+ 	.minor			= SERIAL_AMBA_MINOR,
+-	.nr			= UART_NR,
++	.nr			= SERIAL_AMBA_NR,
+ 	.cons			= AMBA_CONSOLE,
+ };
+ 
+--- a/drivers/tty/serial/Kconfig
++++ b/drivers/tty/serial/Kconfig
+@@ -16,10 +16,25 @@ config SERIAL_AMBA_PL010
+ 	help
+ 	  This selects the ARM(R) AMBA(R) PrimeCell PL010 UART.  If you have
+ 	  an Integrator/AP or Integrator/PP2 platform, or if you have a
+-	  Cirrus Logic EP93xx CPU, say Y or M here.
++	  Cirrus Logic EP93xx CPU or an Infineon ADM5120 SOC, say Y or M here.
+ 
+ 	  If unsure, say N.
+ 
++config SERIAL_AMBA_PL010_NUMPORTS
++	int "Maximum number of AMBA PL010 serial ports"
++	depends on SERIAL_AMBA_PL010
++	default "8"
++	---help---
++	  Set this to the number of serial ports you want the AMBA PL010 driver
++	  to support.
++
++config SERIAL_AMBA_PL010_PORTNAME
++	string "Name of the AMBA PL010 serial ports"
++	depends on SERIAL_AMBA_PL010
++	default "ttyAM"
++	---help---
++	  ::: To be written :::
++
+ config SERIAL_AMBA_PL010_CONSOLE
+ 	bool "Support for console on AMBA serial port"
+ 	depends on SERIAL_AMBA_PL010=y
diff --git a/target/linux/adm8668/patches-3.3/201-amba_bus_hacks.patch b/target/linux/adm8668/patches-3.3/201-amba_bus_hacks.patch
new file mode 100644
index 0000000000..2364d2a668
--- /dev/null
+++ b/target/linux/adm8668/patches-3.3/201-amba_bus_hacks.patch
@@ -0,0 +1,13 @@
+--- a/drivers/amba/bus.c
++++ b/drivers/amba/bus.c
+@@ -20,6 +20,10 @@
+ #include <asm/irq.h>
+ #include <asm/sizes.h>
+ 
++#ifndef NO_IRQ
++#define NO_IRQ		(-1)
++#endif
++
+ #define to_amba_driver(d)	container_of(d, struct amba_driver, drv)
+ 
+ static const struct amba_id *