Merge branches 'boards' and 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6

17 files changed, 4195 insertions, 0 deletions

diff --git a/arch/mips/alchemy/common/Makefile b/arch/mips/alchemy/common/Makefile
new file mode 100644
index 00000000000..df48fd65bbf
--- /dev/null
+++ b/arch/mips/alchemy/common/Makefile
@@ -0,0 +1,14 @@
+#
+#  Copyright 2000, 2008 MontaVista Software Inc.
+#  Author: MontaVista Software, Inc. <source@mvista.com>
+#
+# Makefile for the Alchemy Au1xx0 CPUs, generic files.
+#
+
+obj-y += prom.o irq.o puts.o time.o reset.o \
+	au1xxx_irqmap.o clocks.o platform.o power.o setup.o \
+	sleeper.o cputable.o dma.o dbdma.o gpio.o
+
+obj-$(CONFIG_PCI)		+= pci.o
+
+EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/alchemy/common/au1xxx_irqmap.c b/arch/mips/alchemy/common/au1xxx_irqmap.c
new file mode 100644
index 00000000000..c7ca1596394
--- /dev/null
+++ b/arch/mips/alchemy/common/au1xxx_irqmap.c
@@ -0,0 +1,205 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ *	Au1xxx processor specific IRQ tables
+ *
+ * Copyright 2004 Embedded Edge, LLC
+ *	dan@embeddededge.com
+ *
+ *  This program is free software; you can redistribute	 it and/or modify it
+ *  under  the terms of	 the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the	License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
+ *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
+ *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <au1000.h>
+
+/* The IC0 interrupt table.  This is processor, rather than
+ * board dependent, so no reason to keep this info in the board
+ * dependent files.
+ *
+ * Careful if you change match 2 request!
+ * The interrupt handler is called directly from the low level dispatch code.
+ */
+struct au1xxx_irqmap __initdata au1xxx_ic0_map[] = {
+
+#if defined(CONFIG_SOC_AU1000)
+	{ AU1000_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_UART1_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_UART2_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_UART3_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_SSI0_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_SSI1_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+1, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+2, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+3, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+4, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+5, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+6, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+7, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
+	{ AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_IRDA_TX_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_IRDA_RX_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_USB_DEV_REQ_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_USB_DEV_SUS_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_USB_HOST_INT, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1000_ACSYNC_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_MAC0_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_MAC1_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_AC97C_INT, INTC_INT_RISE_EDGE, 0 },
+
+#elif defined(CONFIG_SOC_AU1500)
+
+	{ AU1500_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_PCI_INTA, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1000_PCI_INTB, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1500_UART3_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_PCI_INTC, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1000_PCI_INTD, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+1, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+2, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+3, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+4, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+5, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+6, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+7, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
+	{ AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_USB_DEV_REQ_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_USB_DEV_SUS_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_USB_HOST_INT, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1000_ACSYNC_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1500_MAC0_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1500_MAC1_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_AC97C_INT, INTC_INT_RISE_EDGE, 0 },
+
+#elif defined(CONFIG_SOC_AU1100)
+
+	{ AU1100_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1100_UART1_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1100_SD_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1100_UART3_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_SSI0_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_SSI1_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+1, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+2, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+3, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+4, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+5, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+6, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_DMA_INT_BASE+7, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
+	{ AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_IRDA_TX_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_IRDA_RX_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_USB_DEV_REQ_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_USB_DEV_SUS_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_USB_HOST_INT, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1000_ACSYNC_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1100_MAC0_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
+	/* { AU1000_GPIO215_208_INT, INTC_INT_HIGH_LEVEL, 0 }, */
+	{ AU1100_LCD_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_AC97C_INT, INTC_INT_RISE_EDGE, 0 },
+
+#elif defined(CONFIG_SOC_AU1550)
+
+	{ AU1550_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_PCI_INTA, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1550_PCI_INTB, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1550_DDMA_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_CRYPTO_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_PCI_INTC, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1550_PCI_INTD, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1550_PCI_RST_INT, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1550_UART1_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_UART3_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_PSC0_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_PSC1_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_PSC2_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_PSC3_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
+	{ AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1550_NAND_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1550_USB_DEV_REQ_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_USB_DEV_SUS_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1550_USB_HOST_INT, INTC_INT_LOW_LEVEL, 0 },
+	{ AU1550_MAC0_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1550_MAC1_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
+
+#elif defined(CONFIG_SOC_AU1200)
+
+	{ AU1200_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_SWT_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1200_SD_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_DDMA_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_MAE_BE_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_UART1_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_MAE_FE_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_PSC0_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_PSC1_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_AES_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_CAMERA_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
+	{ AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1200_NAND_INT, INTC_INT_RISE_EDGE, 0 },
+	{ AU1200_USB_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_LCD_INT, INTC_INT_HIGH_LEVEL, 0 },
+	{ AU1200_MAE_BOTH_INT, INTC_INT_HIGH_LEVEL, 0 },
+
+#else
+#error "Error: Unknown Alchemy SOC"
+#endif
+
+};
+
+int __initdata au1xxx_ic0_nr_irqs = ARRAY_SIZE(au1xxx_ic0_map);
diff --git a/arch/mips/alchemy/common/clocks.c b/arch/mips/alchemy/common/clocks.c
new file mode 100644
index 00000000000..043429d17c5
--- /dev/null
+++ b/arch/mips/alchemy/common/clocks.c
@@ -0,0 +1,93 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ *	Simple Au1xx0 clocks routines.
+ *
+ * Copyright 2001, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ *  This program is free software; you can redistribute	 it and/or modify it
+ *  under  the terms of	 the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the	License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
+ *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
+ *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <asm/mach-au1x00/au1000.h>
+
+static unsigned int au1x00_clock; /*  Hz */
+static unsigned int lcd_clock;    /* KHz */
+static unsigned long uart_baud_base;
+
+/*
+ * Set the au1000_clock
+ */
+void set_au1x00_speed(unsigned int new_freq)
+{
+	au1x00_clock = new_freq;
+}
+
+unsigned int get_au1x00_speed(void)
+{
+	return au1x00_clock;
+}
+EXPORT_SYMBOL(get_au1x00_speed);
+
+/*
+ * The UART baud base is not known at compile time ... if
+ * we want to be able to use the same code on different
+ * speed CPUs.
+ */
+unsigned long get_au1x00_uart_baud_base(void)
+{
+	return uart_baud_base;
+}
+
+void set_au1x00_uart_baud_base(unsigned long new_baud_base)
+{
+	uart_baud_base = new_baud_base;
+}
+
+/*
+ * Calculate the Au1x00's LCD clock based on the current
+ * cpu clock and the system bus clock, and try to keep it
+ * below 40 MHz (the Pb1000 board can lock-up if the LCD
+ * clock is over 40 MHz).
+ */
+void set_au1x00_lcd_clock(void)
+{
+	unsigned int static_cfg0;
+	unsigned int sys_busclk = (get_au1x00_speed() / 1000) /
+				  ((int)(au_readl(SYS_POWERCTRL) & 0x03) + 2);
+
+	static_cfg0 = au_readl(MEM_STCFG0);
+
+	if (static_cfg0 & (1 << 11))
+		lcd_clock = sys_busclk / 5; /* note: BCLK switching fails with D5 */
+	else
+		lcd_clock = sys_busclk / 4;
+
+	if (lcd_clock > 50000) /* Epson MAX */
+		printk(KERN_WARNING "warning: LCD clock too high (%u KHz)\n",
+				    lcd_clock);
+}
+
+unsigned int get_au1x00_lcd_clock(void)
+{
+	return lcd_clock;
+}
+EXPORT_SYMBOL(get_au1x00_lcd_clock);
diff --git a/arch/mips/alchemy/common/cputable.c b/arch/mips/alchemy/common/cputable.c
new file mode 100644
index 00000000000..ba6430bc2d0
--- /dev/null
+++ b/arch/mips/alchemy/common/cputable.c
@@ -0,0 +1,52 @@
+/*
+ *  arch/mips/au1000/common/cputable.c
+ *
+ *  Copyright (C) 2004 Dan Malek (dan@embeddededge.com)
+ *	Copied from PowerPC and updated for Alchemy Au1xxx processors.
+ *
+ *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version
+ *  2 of the License, or (at your option) any later version.
+ */
+
+#include <asm/mach-au1x00/au1000.h>
+
+struct cpu_spec *cur_cpu_spec[NR_CPUS];
+
+/* With some thought, we can probably use the mask to reduce the
+ * size of the table.
+ */
+struct cpu_spec cpu_specs[] = {
+	{ 0xffffffff, 0x00030100, "Au1000 DA", 1, 0, 1 },
+	{ 0xffffffff, 0x00030201, "Au1000 HA", 1, 0, 1 },
+	{ 0xffffffff, 0x00030202, "Au1000 HB", 1, 0, 1 },
+	{ 0xffffffff, 0x00030203, "Au1000 HC", 1, 1, 0 },
+	{ 0xffffffff, 0x00030204, "Au1000 HD", 1, 1, 0 },
+	{ 0xffffffff, 0x01030200, "Au1500 AB", 1, 1, 0 },
+	{ 0xffffffff, 0x01030201, "Au1500 AC", 0, 1, 0 },
+	{ 0xffffffff, 0x01030202, "Au1500 AD", 0, 1, 0 },
+	{ 0xffffffff, 0x02030200, "Au1100 AB", 1, 1, 0 },
+	{ 0xffffffff, 0x02030201, "Au1100 BA", 1, 1, 0 },
+	{ 0xffffffff, 0x02030202, "Au1100 BC", 1, 1, 0 },
+	{ 0xffffffff, 0x02030203, "Au1100 BD", 0, 1, 0 },
+	{ 0xffffffff, 0x02030204, "Au1100 BE", 0, 1, 0 },
+	{ 0xffffffff, 0x03030200, "Au1550 AA", 0, 1, 0 },
+	{ 0xffffffff, 0x04030200, "Au1200 AB", 0, 0, 0 },
+	{ 0xffffffff, 0x04030201, "Au1200 AC", 1, 0, 0 },
+	{ 0x00000000, 0x00000000, "Unknown Au1xxx", 1, 0, 0 }
+};
+
+void set_cpuspec(void)
+{
+	struct	cpu_spec *sp;
+	u32	prid;
+
+	prid = read_c0_prid();
+	sp = cpu_specs;
+	while ((prid & sp->prid_mask) != sp->prid_value)
+		sp++;
+	cur_cpu_spec[0] = sp;
+}
diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c
new file mode 100644
index 00000000000..601ee9180ee
--- /dev/null
+++ b/arch/mips/alchemy/common/dbdma.c
@@ -0,0 +1,978 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ *      The Descriptor Based DMA channel manager that first appeared
+ *	on the Au1550.  I started with dma.c, but I think all that is
+ *	left is this initial comment :-)
+ *
+ * Copyright 2004 Embedded Edge, LLC
+ *	dan@embeddededge.com
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+
+#if defined(CONFIG_SOC_AU1550) || defined(CONFIG_SOC_AU1200)
+
+/*
+ * The Descriptor Based DMA supports up to 16 channels.
+ *
+ * There are 32 devices defined. We keep an internal structure
+ * of devices using these channels, along with additional
+ * information.
+ *
+ * We allocate the descriptors and allow access to them through various
+ * functions.  The drivers allocate the data buffers and assign them
+ * to the descriptors.
+ */
+static DEFINE_SPINLOCK(au1xxx_dbdma_spin_lock);
+
+/* I couldn't find a macro that did this... */
+#define ALIGN_ADDR(x, a)	((((u32)(x)) + (a-1)) & ~(a-1))
+
+static dbdma_global_t *dbdma_gptr = (dbdma_global_t *)DDMA_GLOBAL_BASE;
+static int dbdma_initialized;
+static void au1xxx_dbdma_init(void);
+
+static dbdev_tab_t dbdev_tab[] = {
+#ifdef CONFIG_SOC_AU1550
+	/* UARTS */
+	{ DSCR_CMD0_UART0_TX, DEV_FLAGS_OUT, 0, 8, 0x11100004, 0, 0 },
+	{ DSCR_CMD0_UART0_RX, DEV_FLAGS_IN, 0, 8, 0x11100000, 0, 0 },
+	{ DSCR_CMD0_UART3_TX, DEV_FLAGS_OUT, 0, 8, 0x11400004, 0, 0 },
+	{ DSCR_CMD0_UART3_RX, DEV_FLAGS_IN, 0, 8, 0x11400000, 0, 0 },
+
+	/* EXT DMA */
+	{ DSCR_CMD0_DMA_REQ0, 0, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_DMA_REQ1, 0, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_DMA_REQ2, 0, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_DMA_REQ3, 0, 0, 0, 0x00000000, 0, 0 },
+
+	/* USB DEV */
+	{ DSCR_CMD0_USBDEV_RX0, DEV_FLAGS_IN, 4, 8, 0x10200000, 0, 0 },
+	{ DSCR_CMD0_USBDEV_TX0, DEV_FLAGS_OUT, 4, 8, 0x10200004, 0, 0 },
+	{ DSCR_CMD0_USBDEV_TX1, DEV_FLAGS_OUT, 4, 8, 0x10200008, 0, 0 },
+	{ DSCR_CMD0_USBDEV_TX2, DEV_FLAGS_OUT, 4, 8, 0x1020000c, 0, 0 },
+	{ DSCR_CMD0_USBDEV_RX3, DEV_FLAGS_IN, 4, 8, 0x10200010, 0, 0 },
+	{ DSCR_CMD0_USBDEV_RX4, DEV_FLAGS_IN, 4, 8, 0x10200014, 0, 0 },
+
+	/* PSC 0 */
+	{ DSCR_CMD0_PSC0_TX, DEV_FLAGS_OUT, 0, 0, 0x11a0001c, 0, 0 },
+	{ DSCR_CMD0_PSC0_RX, DEV_FLAGS_IN, 0, 0, 0x11a0001c, 0, 0 },
+
+	/* PSC 1 */
+	{ DSCR_CMD0_PSC1_TX, DEV_FLAGS_OUT, 0, 0, 0x11b0001c, 0, 0 },
+	{ DSCR_CMD0_PSC1_RX, DEV_FLAGS_IN, 0, 0, 0x11b0001c, 0, 0 },
+
+	/* PSC 2 */
+	{ DSCR_CMD0_PSC2_TX, DEV_FLAGS_OUT, 0, 0, 0x10a0001c, 0, 0 },
+	{ DSCR_CMD0_PSC2_RX, DEV_FLAGS_IN, 0, 0, 0x10a0001c, 0, 0 },
+
+	/* PSC 3 */
+	{ DSCR_CMD0_PSC3_TX, DEV_FLAGS_OUT, 0, 0, 0x10b0001c, 0, 0 },
+	{ DSCR_CMD0_PSC3_RX, DEV_FLAGS_IN, 0, 0, 0x10b0001c, 0, 0 },
+
+	{ DSCR_CMD0_PCI_WRITE, 0, 0, 0, 0x00000000, 0, 0 },	/* PCI */
+	{ DSCR_CMD0_NAND_FLASH, 0, 0, 0, 0x00000000, 0, 0 },	/* NAND */
+
+	/* MAC 0 */
+	{ DSCR_CMD0_MAC0_RX, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_MAC0_TX, DEV_FLAGS_OUT, 0, 0, 0x00000000, 0, 0 },
+
+	/* MAC 1 */
+	{ DSCR_CMD0_MAC1_RX, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_MAC1_TX, DEV_FLAGS_OUT, 0, 0, 0x00000000, 0, 0 },
+
+#endif /* CONFIG_SOC_AU1550 */
+
+#ifdef CONFIG_SOC_AU1200
+	{ DSCR_CMD0_UART0_TX, DEV_FLAGS_OUT, 0, 8, 0x11100004, 0, 0 },
+	{ DSCR_CMD0_UART0_RX, DEV_FLAGS_IN, 0, 8, 0x11100000, 0, 0 },
+	{ DSCR_CMD0_UART1_TX, DEV_FLAGS_OUT, 0, 8, 0x11200004, 0, 0 },
+	{ DSCR_CMD0_UART1_RX, DEV_FLAGS_IN, 0, 8, 0x11200000, 0, 0 },
+
+	{ DSCR_CMD0_DMA_REQ0, 0, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_DMA_REQ1, 0, 0, 0, 0x00000000, 0, 0 },
+
+	{ DSCR_CMD0_MAE_BE, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_MAE_FE, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_MAE_BOTH, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_LCD, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+
+	{ DSCR_CMD0_SDMS_TX0, DEV_FLAGS_OUT, 4, 8, 0x10600000, 0, 0 },
+	{ DSCR_CMD0_SDMS_RX0, DEV_FLAGS_IN, 4, 8, 0x10600004, 0, 0 },
+	{ DSCR_CMD0_SDMS_TX1, DEV_FLAGS_OUT, 4, 8, 0x10680000, 0, 0 },
+	{ DSCR_CMD0_SDMS_RX1, DEV_FLAGS_IN, 4, 8, 0x10680004, 0, 0 },
+
+	{ DSCR_CMD0_AES_RX, DEV_FLAGS_IN , 4, 32, 0x10300008, 0, 0 },
+	{ DSCR_CMD0_AES_TX, DEV_FLAGS_OUT, 4, 32, 0x10300004, 0, 0 },
+
+	{ DSCR_CMD0_PSC0_TX, DEV_FLAGS_OUT, 0, 16, 0x11a0001c, 0, 0 },
+	{ DSCR_CMD0_PSC0_RX, DEV_FLAGS_IN, 0, 16, 0x11a0001c, 0, 0 },
+	{ DSCR_CMD0_PSC0_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+
+	{ DSCR_CMD0_PSC1_TX, DEV_FLAGS_OUT, 0, 16, 0x11b0001c, 0, 0 },
+	{ DSCR_CMD0_PSC1_RX, DEV_FLAGS_IN, 0, 16, 0x11b0001c, 0, 0 },
+	{ DSCR_CMD0_PSC1_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+
+	{ DSCR_CMD0_CIM_RXA, DEV_FLAGS_IN, 0, 32, 0x14004020, 0, 0 },
+	{ DSCR_CMD0_CIM_RXB, DEV_FLAGS_IN, 0, 32, 0x14004040, 0, 0 },
+	{ DSCR_CMD0_CIM_RXC, DEV_FLAGS_IN, 0, 32, 0x14004060, 0, 0 },
+	{ DSCR_CMD0_CIM_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+
+	{ DSCR_CMD0_NAND_FLASH, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
+
+#endif /* CONFIG_SOC_AU1200 */
+
+	{ DSCR_CMD0_THROTTLE, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+	{ DSCR_CMD0_ALWAYS, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+
+	/* Provide 16 user definable device types */
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+};
+
+#define DBDEV_TAB_SIZE	ARRAY_SIZE(dbdev_tab)
+
+static chan_tab_t *chan_tab_ptr[NUM_DBDMA_CHANS];
+
+static dbdev_tab_t *find_dbdev_id(u32 id)
+{
+	int i;
+	dbdev_tab_t *p;
+	for (i = 0; i < DBDEV_TAB_SIZE; ++i) {
+		p = &dbdev_tab[i];
+		if (p->dev_id == id)
+			return p;
+	}
+	return NULL;
+}
+
+void *au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp)
+{
+	return phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+}
+EXPORT_SYMBOL(au1xxx_ddma_get_nextptr_virt);
+
+u32 au1xxx_ddma_add_device(dbdev_tab_t *dev)
+{
+	u32 ret = 0;
+	dbdev_tab_t *p;
+	static u16 new_id = 0x1000;
+
+	p = find_dbdev_id(~0);
+	if (NULL != p) {
+		memcpy(p, dev, sizeof(dbdev_tab_t));
+		p->dev_id = DSCR_DEV2CUSTOM_ID(new_id, dev->dev_id);
+		ret = p->dev_id;
+		new_id++;
+#if 0
+		printk(KERN_DEBUG "add_device: id:%x flags:%x padd:%x\n",
+				  p->dev_id, p->dev_flags, p->dev_physaddr);
+#endif
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(au1xxx_ddma_add_device);
+
+void au1xxx_ddma_del_device(u32 devid)
+{
+	dbdev_tab_t *p = find_dbdev_id(devid);
+
+	if (p != NULL) {
+		memset(p, 0, sizeof(dbdev_tab_t));
+		p->dev_id = ~0;
+	}
+}
+EXPORT_SYMBOL(au1xxx_ddma_del_device);
+
+/* Allocate a channel and return a non-zero descriptor if successful. */
+u32 au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
+       void (*callback)(int, void *), void *callparam)
+{
+	unsigned long   flags;
+	u32		used, chan, rv;
+	u32		dcp;
+	int		i;
+	dbdev_tab_t	*stp, *dtp;
+	chan_tab_t	*ctp;
+	au1x_dma_chan_t *cp;
+
+	/*
+	 * We do the intialization on the first channel allocation.
+	 * We have to wait because of the interrupt handler initialization
+	 * which can't be done successfully during board set up.
+	 */
+	if (!dbdma_initialized)
+		au1xxx_dbdma_init();
+	dbdma_initialized = 1;
+
+	stp = find_dbdev_id(srcid);
+	if (stp == NULL)
+		return 0;
+	dtp = find_dbdev_id(destid);
+	if (dtp == NULL)
+		return 0;
+
+	used = 0;
+	rv = 0;
+
+	/* Check to see if we can get both channels. */
+	spin_lock_irqsave(&au1xxx_dbdma_spin_lock, flags);
+	if (!(stp->dev_flags & DEV_FLAGS_INUSE) ||
+	     (stp->dev_flags & DEV_FLAGS_ANYUSE)) {
+		/* Got source */
+		stp->dev_flags |= DEV_FLAGS_INUSE;
+		if (!(dtp->dev_flags & DEV_FLAGS_INUSE) ||
+		     (dtp->dev_flags & DEV_FLAGS_ANYUSE)) {
+			/* Got destination */
+			dtp->dev_flags |= DEV_FLAGS_INUSE;
+		} else {
+			/* Can't get dest.  Release src. */
+			stp->dev_flags &= ~DEV_FLAGS_INUSE;
+			used++;
+		}
+	} else
+		used++;
+	spin_unlock_irqrestore(&au1xxx_dbdma_spin_lock, flags);
+
+	if (!used) {
+		/* Let's see if we can allocate a channel for it. */
+		ctp = NULL;
+		chan = 0;
+		spin_lock_irqsave(&au1xxx_dbdma_spin_lock, flags);
+		for (i = 0; i < NUM_DBDMA_CHANS; i++)
+			if (chan_tab_ptr[i] == NULL) {
+				/*
+				 * If kmalloc fails, it is caught below same
+				 * as a channel not available.
+				 */
+				ctp = kmalloc(sizeof(chan_tab_t), GFP_ATOMIC);
+				chan_tab_ptr[i] = ctp;
+				break;
+			}
+		spin_unlock_irqrestore(&au1xxx_dbdma_spin_lock, flags);
+
+		if (ctp != NULL) {
+			memset(ctp, 0, sizeof(chan_tab_t));
+			ctp->chan_index = chan = i;
+			dcp = DDMA_CHANNEL_BASE;
+			dcp += (0x0100 * chan);
+			ctp->chan_ptr = (au1x_dma_chan_t *)dcp;
+			cp = (au1x_dma_chan_t *)dcp;
+			ctp->chan_src = stp;
+			ctp->chan_dest = dtp;
+			ctp->chan_callback = callback;
+			ctp->chan_callparam = callparam;
+
+			/* Initialize channel configuration. */
+			i = 0;
+			if (stp->dev_intlevel)
+				i |= DDMA_CFG_SED;
+			if (stp->dev_intpolarity)
+				i |= DDMA_CFG_SP;
+			if (dtp->dev_intlevel)
+				i |= DDMA_CFG_DED;
+			if (dtp->dev_intpolarity)
+				i |= DDMA_CFG_DP;
+			if ((stp->dev_flags & DEV_FLAGS_SYNC) ||
+				(dtp->dev_flags & DEV_FLAGS_SYNC))
+					i |= DDMA_CFG_SYNC;
+			cp->ddma_cfg = i;
+			au_sync();
+
+			/* Return a non-zero value that can be used to
+			 * find the channel information in subsequent
+			 * operations.
+			 */
+			rv = (u32)(&chan_tab_ptr[chan]);
+		} else {
+			/* Release devices */
+			stp->dev_flags &= ~DEV_FLAGS_INUSE;
+			dtp->dev_flags &= ~DEV_FLAGS_INUSE;
+		}
+	}
+	return rv;
+}
+EXPORT_SYMBOL(au1xxx_dbdma_chan_alloc);
+
+/*
+ * Set the device width if source or destination is a FIFO.
+ * Should be 8, 16, or 32 bits.
+ */
+u32 au1xxx_dbdma_set_devwidth(u32 chanid, int bits)
+{
+	u32		rv;
+	chan_tab_t	*ctp;
+	dbdev_tab_t	*stp, *dtp;
+
+	ctp = *((chan_tab_t **)chanid);
+	stp = ctp->chan_src;
+	dtp = ctp->chan_dest;
+	rv = 0;
+
+	if (stp->dev_flags & DEV_FLAGS_IN) {	/* Source in fifo */
+		rv = stp->dev_devwidth;
+		stp->dev_devwidth = bits;
+	}
+	if (dtp->dev_flags & DEV_FLAGS_OUT) {	/* Destination out fifo */
+		rv = dtp->dev_devwidth;
+		dtp->dev_devwidth = bits;
+	}
+
+	return rv;
+}
+EXPORT_SYMBOL(au1xxx_dbdma_set_devwidth);
+
+/* Allocate a descriptor ring, initializing as much as possible. */
+u32 au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
+{
+	int			i;
+	u32			desc_base, srcid, destid;
+	u32			cmd0, cmd1, src1, dest1;
+	u32			src0, dest0;
+	chan_tab_t		*ctp;
+	dbdev_tab_t		*stp, *dtp;
+	au1x_ddma_desc_t	*dp;
+
+	/*
+	 * I guess we could check this to be within the
+	 * range of the table......
+	 */
+	ctp = *((chan_tab_t **)chanid);
+	stp = ctp->chan_src;
+	dtp = ctp->chan_dest;
+
+	/*
+	 * The descriptors must be 32-byte aligned.  There is a
+	 * possibility the allocation will give us such an address,
+	 * and if we try that first we are likely to not waste larger
+	 * slabs of memory.
+	 */
+	desc_base = (u32)kmalloc(entries * sizeof(au1x_ddma_desc_t),
+				 GFP_KERNEL|GFP_DMA);
+	if (desc_base == 0)
+		return 0;
+
+	if (desc_base & 0x1f) {
+		/*
+		 * Lost....do it again, allocate extra, and round
+		 * the address base.
+		 */
+		kfree((const void *)desc_base);
+		i = entries * sizeof(au1x_ddma_desc_t);
+		i += (sizeof(au1x_ddma_desc_t) - 1);
+		desc_base = (u32)kmalloc(i, GFP_KERNEL|GFP_DMA);
+		if (desc_base == 0)
+			return 0;
+
+		desc_base = ALIGN_ADDR(desc_base, sizeof(au1x_ddma_desc_t));
+	}
+	dp = (au1x_ddma_desc_t *)desc_base;
+
+	/* Keep track of the base descriptor. */
+	ctp->chan_desc_base = dp;
+
+	/* Initialize the rings with as much information as we know. */
+	srcid = stp->dev_id;
+	destid = dtp->dev_id;
+
+	cmd0 = cmd1 = src1 = dest1 = 0;
+	src0 = dest0 = 0;
+
+	cmd0 |= DSCR_CMD0_SID(srcid);
+	cmd0 |= DSCR_CMD0_DID(destid);
+	cmd0 |= DSCR_CMD0_IE | DSCR_CMD0_CV;
+	cmd0 |= DSCR_CMD0_ST(DSCR_CMD0_ST_NOCHANGE);
+
+	/* Is it mem to mem transfer? */
+	if (((DSCR_CUSTOM2DEV_ID(srcid) == DSCR_CMD0_THROTTLE) ||
+	     (DSCR_CUSTOM2DEV_ID(srcid) == DSCR_CMD0_ALWAYS)) &&
+	    ((DSCR_CUSTOM2DEV_ID(destid) == DSCR_CMD0_THROTTLE) ||
+	     (DSCR_CUSTOM2DEV_ID(destid) == DSCR_CMD0_ALWAYS)))
+		cmd0 |= DSCR_CMD0_MEM;
+
+	switch (stp->dev_devwidth) {
+	case 8:
+		cmd0 |= DSCR_CMD0_SW(DSCR_CMD0_BYTE);
+		break;
+	case 16:
+		cmd0 |= DSCR_CMD0_SW(DSCR_CMD0_HALFWORD);
+		break;
+	case 32:
+	default:
+		cmd0 |= DSCR_CMD0_SW(DSCR_CMD0_WORD);
+		break;
+	}
+
+	switch (dtp->dev_devwidth) {
+	case 8:
+		cmd0 |= DSCR_CMD0_DW(DSCR_CMD0_BYTE);
+		break;
+	case 16:
+		cmd0 |= DSCR_CMD0_DW(DSCR_CMD0_HALFWORD);
+		break;
+	case 32:
+	default:
+		cmd0 |= DSCR_CMD0_DW(DSCR_CMD0_WORD);
+		break;
+	}
+
+	/*
+	 * If the device is marked as an in/out FIFO, ensure it is
+	 * set non-coherent.
+	 */
+	if (stp->dev_flags & DEV_FLAGS_IN)
+		cmd0 |= DSCR_CMD0_SN;		/* Source in FIFO */
+	if (dtp->dev_flags & DEV_FLAGS_OUT)
+		cmd0 |= DSCR_CMD0_DN;		/* Destination out FIFO */
+
+	/*
+	 * Set up source1.  For now, assume no stride and increment.
+	 * A channel attribute update can change this later.
+	 */
+	switch (stp->dev_tsize) {
+	case 1:
+		src1 |= DSCR_SRC1_STS(DSCR_xTS_SIZE1);
+		break;
+	case 2:
+		src1 |= DSCR_SRC1_STS(DSCR_xTS_SIZE2);
+		break;
+	case 4:
+		src1 |= DSCR_SRC1_STS(DSCR_xTS_SIZE4);
+		break;
+	case 8:
+	default:
+		src1 |= DSCR_SRC1_STS(DSCR_xTS_SIZE8);
+		break;
+	}
+
+	/* If source input is FIFO, set static address.	*/
+	if (stp->dev_flags & DEV_FLAGS_IN) {
+		if (stp->dev_flags & DEV_FLAGS_BURSTABLE)
+			src1 |= DSCR_SRC1_SAM(DSCR_xAM_BURST);
+		else
+			src1 |= DSCR_SRC1_SAM(DSCR_xAM_STATIC);
+	}
+
+	if (stp->dev_physaddr)
+		src0 = stp->dev_physaddr;
+
+	/*
+	 * Set up dest1.  For now, assume no stride and increment.
+	 * A channel attribute update can change this later.
+	 */
+	switch (dtp->dev_tsize) {
+	case 1:
+		dest1 |= DSCR_DEST1_DTS(DSCR_xTS_SIZE1);
+		break;
+	case 2:
+		dest1 |= DSCR_DEST1_DTS(DSCR_xTS_SIZE2);
+		break;
+	case 4:
+		dest1 |= DSCR_DEST1_DTS(DSCR_xTS_SIZE4);
+		break;
+	case 8:
+	default:
+		dest1 |= DSCR_DEST1_DTS(DSCR_xTS_SIZE8);
+		break;
+	}
+
+	/* If destination output is FIFO, set static address. */
+	if (dtp->dev_flags & DEV_FLAGS_OUT) {
+		if (dtp->dev_flags & DEV_FLAGS_BURSTABLE)
+			dest1 |= DSCR_DEST1_DAM(DSCR_xAM_BURST);
+		else
+			dest1 |= DSCR_DEST1_DAM(DSCR_xAM_STATIC);
+	}
+
+	if (dtp->dev_physaddr)
+		dest0 = dtp->dev_physaddr;
+
+#if 0
+		printk(KERN_DEBUG "did:%x sid:%x cmd0:%x cmd1:%x source0:%x "
+				  "source1:%x dest0:%x dest1:%x\n",
+				  dtp->dev_id, stp->dev_id, cmd0, cmd1, src0,
+				  src1, dest0, dest1);
+#endif
+	for (i = 0; i < entries; i++) {
+		dp->dscr_cmd0 = cmd0;
+		dp->dscr_cmd1 = cmd1;
+		dp->dscr_source0 = src0;
+		dp->dscr_source1 = src1;
+		dp->dscr_dest0 = dest0;
+		dp->dscr_dest1 = dest1;
+		dp->dscr_stat = 0;
+		dp->sw_context = 0;
+		dp->sw_status = 0;
+		dp->dscr_nxtptr = DSCR_NXTPTR(virt_to_phys(dp + 1));
+		dp++;
+	}
+
+	/* Make last descrptor point to the first. */
+	dp--;
+	dp->dscr_nxtptr = DSCR_NXTPTR(virt_to_phys(ctp->chan_desc_base));
+	ctp->get_ptr = ctp->put_ptr = ctp->cur_ptr = ctp->chan_desc_base;
+
+	return (u32)ctp->chan_desc_base;
+}
+EXPORT_SYMBOL(au1xxx_dbdma_ring_alloc);
+
+/*
+ * Put a source buffer into the DMA ring.
+ * This updates the source pointer and byte count.  Normally used
+ * for memory to fifo transfers.
+ */
+u32 _au1xxx_dbdma_put_source(u32 chanid, void *buf, int nbytes, u32 flags)
+{
+	chan_tab_t		*ctp;
+	au1x_ddma_desc_t	*dp;
+
+	/*
+	 * I guess we could check this to be within the
+	 * range of the table......
+	 */
+	ctp = *(chan_tab_t **)chanid;
+
+	/*
+	 * We should have multiple callers for a particular channel,
+	 * an interrupt doesn't affect this pointer nor the descriptor,
+	 * so no locking should be needed.
+	 */
+	dp = ctp->put_ptr;
+
+	/*
+	 * If the descriptor is valid, we are way ahead of the DMA
+	 * engine, so just return an error condition.
+	 */
+	if (dp->dscr_cmd0 & DSCR_CMD0_V)
+		return 0;
+
+	/* Load up buffer address and byte count. */
+	dp->dscr_source0 = virt_to_phys(buf);
+	dp->dscr_cmd1 = nbytes;
+	/* Check flags */
+	if (flags & DDMA_FLAGS_IE)
+		dp->dscr_cmd0 |= DSCR_CMD0_IE;
+	if (flags & DDMA_FLAGS_NOIE)
+		dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
+
+	/*
+	 * There is an errata on the Au1200/Au1550 parts that could result
+	 * in "stale" data being DMA'ed. It has to do with the snoop logic on
+	 * the cache eviction buffer.  DMA_NONCOHERENT is on by default for
+	 * these parts. If it is fixed in the future, these dma_cache_inv will
+	 * just be nothing more than empty macros. See io.h.
+	 */
+	dma_cache_wback_inv((unsigned long)buf, nbytes);
+	dp->dscr_cmd0 |= DSCR_CMD0_V;	/* Let it rip */
+	au_sync();
+	dma_cache_wback_inv((unsigned long)dp, sizeof(dp));
+	ctp->chan_ptr->ddma_dbell = 0;
+
+	/* Get next descriptor pointer.	*/
+	ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+
+	/* Return something non-zero. */
+	return nbytes;
+}
+EXPORT_SYMBOL(_au1xxx_dbdma_put_source);
+
+/* Put a destination buffer into the DMA ring.
+ * This updates the destination pointer and byte count.  Normally used
+ * to place an empty buffer into the ring for fifo to memory transfers.
+ */
+u32
+_au1xxx_dbdma_put_dest(u32 chanid, void *buf, int nbytes, u32 flags)
+{
+	chan_tab_t		*ctp;
+	au1x_ddma_desc_t	*dp;
+
+	/* I guess we could check this to be within the
+	 * range of the table......
+	 */
+	ctp = *((chan_tab_t **)chanid);
+
+	/* We should have multiple callers for a particular channel,
+	 * an interrupt doesn't affect this pointer nor the descriptor,
+	 * so no locking should be needed.
+	 */
+	dp = ctp->put_ptr;
+
+	/* If the descriptor is valid, we are way ahead of the DMA
+	 * engine, so just return an error condition.
+	 */
+	if (dp->dscr_cmd0 & DSCR_CMD0_V)
+		return 0;
+
+	/* Load up buffer address and byte count */
+
+	/* Check flags  */
+	if (flags & DDMA_FLAGS_IE)
+		dp->dscr_cmd0 |= DSCR_CMD0_IE;
+	if (flags & DDMA_FLAGS_NOIE)
+		dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
+
+	dp->dscr_dest0 = virt_to_phys(buf);
+	dp->dscr_cmd1 = nbytes;
+#if 0
+	printk(KERN_DEBUG "cmd0:%x cmd1:%x source0:%x source1:%x dest0:%x dest1:%x\n",
+			  dp->dscr_cmd0, dp->dscr_cmd1, dp->dscr_source0,
+			  dp->dscr_source1, dp->dscr_dest0, dp->dscr_dest1);
+#endif
+	/*
+	 * There is an errata on the Au1200/Au1550 parts that could result in
+	 * "stale" data being DMA'ed. It has to do with the snoop logic on the
+	 * cache eviction buffer.  DMA_NONCOHERENT is on by default for these
+	 * parts. If it is fixed in the future, these dma_cache_inv will just
+	 * be nothing more than empty macros. See io.h.
+	 */
+	dma_cache_inv((unsigned long)buf, nbytes);
+	dp->dscr_cmd0 |= DSCR_CMD0_V;	/* Let it rip */
+	au_sync();
+	dma_cache_wback_inv((unsigned long)dp, sizeof(dp));
+	ctp->chan_ptr->ddma_dbell = 0;
+
+	/* Get next descriptor pointer.	*/
+	ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+
+	/* Return something non-zero. */
+	return nbytes;
+}
+EXPORT_SYMBOL(_au1xxx_dbdma_put_dest);
+
+/*
+ * Get a destination buffer into the DMA ring.
+ * Normally used to get a full buffer from the ring during fifo
+ * to memory transfers.  This does not set the valid bit, you will
+ * have to put another destination buffer to keep the DMA going.
+ */
+u32 au1xxx_dbdma_get_dest(u32 chanid, void **buf, int *nbytes)
+{
+	chan_tab_t		*ctp;
+	au1x_ddma_desc_t	*dp;
+	u32			rv;
+
+	/*
+	 * I guess we could check this to be within the
+	 * range of the table......
+	 */
+	ctp = *((chan_tab_t **)chanid);
+
+	/*
+	 * We should have multiple callers for a particular channel,
+	 * an interrupt doesn't affect this pointer nor the descriptor,
+	 * so no locking should be needed.
+	 */
+	dp = ctp->get_ptr;
+
+	/*
+	 * If the descriptor is valid, we are way ahead of the DMA
+	 * engine, so just return an error condition.
+	 */
+	if (dp->dscr_cmd0 & DSCR_CMD0_V)
+		return 0;
+
+	/* Return buffer address and byte count. */
+	*buf = (void *)(phys_to_virt(dp->dscr_dest0));
+	*nbytes = dp->dscr_cmd1;
+	rv = dp->dscr_stat;
+
+	/* Get next descriptor pointer.	*/
+	ctp->get_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+
+	/* Return something non-zero. */
+	return rv;
+}
+EXPORT_SYMBOL_GPL(au1xxx_dbdma_get_dest);
+
+void au1xxx_dbdma_stop(u32 chanid)
+{
+	chan_tab_t	*ctp;
+	au1x_dma_chan_t *cp;
+	int halt_timeout = 0;
+
+	ctp = *((chan_tab_t **)chanid);
+
+	cp = ctp->chan_ptr;
+	cp->ddma_cfg &= ~DDMA_CFG_EN;	/* Disable channel */
+	au_sync();
+	while (!(cp->ddma_stat & DDMA_STAT_H)) {
+		udelay(1);
+		halt_timeout++;
+		if (halt_timeout > 100) {
+			printk(KERN_WARNING "warning: DMA channel won't halt\n");
+			break;
+		}
+	}
+	/* clear current desc valid and doorbell */
+	cp->ddma_stat |= (DDMA_STAT_DB | DDMA_STAT_V);
+	au_sync();
+}
+EXPORT_SYMBOL(au1xxx_dbdma_stop);
+
+/*
+ * Start using the current descriptor pointer.  If the DBDMA encounters
+ * a non-valid descriptor, it will stop.  In this case, we can just
+ * continue by adding a buffer to the list and starting again.
+ */
+void au1xxx_dbdma_start(u32 chanid)
+{
+	chan_tab_t	*ctp;
+	au1x_dma_chan_t *cp;
+
+	ctp = *((chan_tab_t **)chanid);
+	cp = ctp->chan_ptr;
+	cp->ddma_desptr = virt_to_phys(ctp->cur_ptr);
+	cp->ddma_cfg |= DDMA_CFG_EN;	/* Enable channel */
+	au_sync();
+	cp->ddma_dbell = 0;
+	au_sync();
+}
+EXPORT_SYMBOL(au1xxx_dbdma_start);
+
+void au1xxx_dbdma_reset(u32 chanid)
+{
+	chan_tab_t		*ctp;
+	au1x_ddma_desc_t	*dp;
+
+	au1xxx_dbdma_stop(chanid);
+
+	ctp = *((chan_tab_t **)chanid);
+	ctp->get_ptr = ctp->put_ptr = ctp->cur_ptr = ctp->chan_desc_base;
+
+	/* Run through the descriptors and reset the valid indicator. */
+	dp = ctp->chan_desc_base;
+
+	do {
+		dp->dscr_cmd0 &= ~DSCR_CMD0_V;
+		/*
+		 * Reset our software status -- this is used to determine
+		 * if a descriptor is in use by upper level software. Since
+		 * posting can reset 'V' bit.
+		 */
+		dp->sw_status = 0;
+		dp = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+	} while (dp != ctp->chan_desc_base);
+}
+EXPORT_SYMBOL(au1xxx_dbdma_reset);
+
+u32 au1xxx_get_dma_residue(u32 chanid)
+{
+	chan_tab_t	*ctp;
+	au1x_dma_chan_t *cp;
+	u32		rv;
+
+	ctp = *((chan_tab_t **)chanid);
+	cp = ctp->chan_ptr;
+
+	/* This is only valid if the channel is stopped. */
+	rv = cp->ddma_bytecnt;
+	au_sync();
+
+	return rv;
+}
+EXPORT_SYMBOL_GPL(au1xxx_get_dma_residue);
+
+void au1xxx_dbdma_chan_free(u32 chanid)
+{
+	chan_tab_t	*ctp;
+	dbdev_tab_t	*stp, *dtp;
+
+	ctp = *((chan_tab_t **)chanid);
+	stp = ctp->chan_src;
+	dtp = ctp->chan_dest;
+
+	au1xxx_dbdma_stop(chanid);
+
+	kfree((void *)ctp->chan_desc_base);
+
+	stp->dev_flags &= ~DEV_FLAGS_INUSE;
+	dtp->dev_flags &= ~DEV_FLAGS_INUSE;
+	chan_tab_ptr[ctp->chan_index] = NULL;
+
+	kfree(ctp);
+}
+EXPORT_SYMBOL(au1xxx_dbdma_chan_free);
+
+static irqreturn_t dbdma_interrupt(int irq, void *dev_id)
+{
+	u32 intstat;
+	u32 chan_index;
+	chan_tab_t		*ctp;
+	au1x_ddma_desc_t	*dp;
+	au1x_dma_chan_t *cp;
+
+	intstat = dbdma_gptr->ddma_intstat;
+	au_sync();
+	chan_index = __ffs(intstat);
+
+	ctp = chan_tab_ptr[chan_index];
+	cp = ctp->chan_ptr;
+	dp = ctp->cur_ptr;
+
+	/* Reset interrupt. */
+	cp->ddma_irq = 0;
+	au_sync();
+
+	if (ctp->chan_callback)
+		ctp->chan_callback(irq, ctp->chan_callparam);
+
+	ctp->cur_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+	return IRQ_RETVAL(1);
+}
+
+static void au1xxx_dbdma_init(void)
+{
+	int irq_nr;
+
+	dbdma_gptr->ddma_config = 0;
+	dbdma_gptr->ddma_throttle = 0;
+	dbdma_gptr->ddma_inten = 0xffff;
+	au_sync();
+
+#if defined(CONFIG_SOC_AU1550)
+	irq_nr = AU1550_DDMA_INT;
+#elif defined(CONFIG_SOC_AU1200)
+	irq_nr = AU1200_DDMA_INT;
+#else
+	#error Unknown Au1x00 SOC
+#endif
+
+	if (request_irq(irq_nr, dbdma_interrupt, IRQF_DISABLED,
+			"Au1xxx dbdma", (void *)dbdma_gptr))
+		printk(KERN_ERR "Can't get 1550 dbdma irq");
+}
+
+void au1xxx_dbdma_dump(u32 chanid)
+{
+	chan_tab_t	 *ctp;
+	au1x_ddma_desc_t *dp;
+	dbdev_tab_t	 *stp, *dtp;
+	au1x_dma_chan_t  *cp;
+	u32 i		 = 0;
+
+	ctp = *((chan_tab_t **)chanid);
+	stp = ctp->chan_src;
+	dtp = ctp->chan_dest;
+	cp = ctp->chan_ptr;
+
+	printk(KERN_DEBUG "Chan %x, stp %x (dev %d)  dtp %x (dev %d) \n",
+			  (u32)ctp, (u32)stp, stp - dbdev_tab, (u32)dtp,
+			  dtp - dbdev_tab);
+	printk(KERN_DEBUG "desc base %x, get %x, put %x, cur %x\n",
+			  (u32)(ctp->chan_desc_base), (u32)(ctp->get_ptr),
+			  (u32)(ctp->put_ptr), (u32)(ctp->cur_ptr));
+
+	printk(KERN_DEBUG "dbdma chan %x\n", (u32)cp);
+	printk(KERN_DEBUG "cfg %08x, desptr %08x, statptr %08x\n",
+			  cp->ddma_cfg, cp->ddma_desptr, cp->ddma_statptr);
+	printk(KERN_DEBUG "dbell %08x, irq %08x, stat %08x, bytecnt %08x\n",
+			  cp->ddma_dbell, cp->ddma_irq, cp->ddma_stat,
+			  cp->ddma_bytecnt);
+
+	/* Run through the descriptors */
+	dp = ctp->chan_desc_base;
+
+	do {
+		printk(KERN_DEBUG "Dp[%d]= %08x, cmd0 %08x, cmd1 %08x\n",
+				  i++, (u32)dp, dp->dscr_cmd0, dp->dscr_cmd1);
+		printk(KERN_DEBUG "src0 %08x, src1 %08x, dest0 %08x, dest1 %08x\n",
+				  dp->dscr_source0, dp->dscr_source1,
+				  dp->dscr_dest0, dp->dscr_dest1);
+		printk(KERN_DEBUG "stat %08x, nxtptr %08x\n",
+				  dp->dscr_stat, dp->dscr_nxtptr);
+		dp = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+	} while (dp != ctp->chan_desc_base);
+}
+
+/* Put a descriptor into the DMA ring.
+ * This updates the source/destination pointers and byte count.
+ */
+u32 au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr)
+{
+	chan_tab_t *ctp;
+	au1x_ddma_desc_t *dp;
+	u32 nbytes = 0;
+
+	/*
+	 * I guess we could check this to be within the
+	 * range of the table......
+	 */
+	ctp = *((chan_tab_t **)chanid);
+
+	/*
+	 * We should have multiple callers for a particular channel,
+	 * an interrupt doesn't affect this pointer nor the descriptor,
+	 * so no locking should be needed.
+	 */
+	dp = ctp->put_ptr;
+
+	/*
+	 * If the descriptor is valid, we are way ahead of the DMA
+	 * engine, so just return an error condition.
+	 */
+	if (dp->dscr_cmd0 & DSCR_CMD0_V)
+		return 0;
+
+	/* Load up buffer addresses and byte count. */
+	dp->dscr_dest0 = dscr->dscr_dest0;
+	dp->dscr_source0 = dscr->dscr_source0;
+	dp->dscr_dest1 = dscr->dscr_dest1;
+	dp->dscr_source1 = dscr->dscr_source1;
+	dp->dscr_cmd1 = dscr->dscr_cmd1;
+	nbytes = dscr->dscr_cmd1;
+	/* Allow the caller to specifiy if an interrupt is generated */
+	dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
+	dp->dscr_cmd0 |= dscr->dscr_cmd0 | DSCR_CMD0_V;
+	ctp->chan_ptr->ddma_dbell = 0;
+
+	/* Get next descriptor pointer.	*/
+	ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+
+	/* Return something non-zero. */
+	return nbytes;
+}
+
+#endif /* defined(CONFIG_SOC_AU1550) || defined(CONFIG_SOC_AU1200) */
diff --git a/arch/mips/alchemy/common/dma.c b/arch/mips/alchemy/common/dma.c
new file mode 100644
index 00000000000..d6fbda232e6
--- /dev/null
+++ b/arch/mips/alchemy/common/dma.c
@@ -0,0 +1,238 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ *      A DMA channel allocator for Au1x00. API is modeled loosely off of
+ *      linux/kernel/dma.c.
+ *
+ * Copyright 2000, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
+ *
+ *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1000_dma.h>
+
+#if defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1500) || \
+    defined(CONFIG_SOC_AU1100)
+/*
+ * A note on resource allocation:
+ *
+ * All drivers needing DMA channels, should allocate and release them
+ * through the public routines `request_dma()' and `free_dma()'.
+ *
+ * In order to avoid problems, all processes should allocate resources in
+ * the same sequence and release them in the reverse order.
+ *
+ * So, when allocating DMAs and IRQs, first allocate the DMA, then the IRQ.
+ * When releasing them, first release the IRQ, then release the DMA. The
+ * main reason for this order is that, if you are requesting the DMA buffer
+ * done interrupt, you won't know the irq number until the DMA channel is
+ * returned from request_dma.
+ */
+
+DEFINE_SPINLOCK(au1000_dma_spin_lock);
+
+struct dma_chan au1000_dma_table[NUM_AU1000_DMA_CHANNELS] = {
+      {.dev_id = -1,},
+      {.dev_id = -1,},
+      {.dev_id = -1,},
+      {.dev_id = -1,},
+      {.dev_id = -1,},
+      {.dev_id = -1,},
+      {.dev_id = -1,},
+      {.dev_id = -1,}
+};
+EXPORT_SYMBOL(au1000_dma_table);
+
+/* Device FIFO addresses and default DMA modes */
+static const struct dma_dev {
+	unsigned int fifo_addr;
+	unsigned int dma_mode;
+} dma_dev_table[DMA_NUM_DEV] = {
+	{UART0_ADDR + UART_TX, 0},
+	{UART0_ADDR + UART_RX, 0},
+	{0, 0},
+	{0, 0},
+	{AC97C_DATA, DMA_DW16 },          /* coherent */
+	{AC97C_DATA, DMA_DR | DMA_DW16 }, /* coherent */
+	{UART3_ADDR + UART_TX, DMA_DW8 | DMA_NC},
+	{UART3_ADDR + UART_RX, DMA_DR | DMA_DW8 | DMA_NC},
+	{USBD_EP0RD, DMA_DR | DMA_DW8 | DMA_NC},
+	{USBD_EP0WR, DMA_DW8 | DMA_NC},
+	{USBD_EP2WR, DMA_DW8 | DMA_NC},
+	{USBD_EP3WR, DMA_DW8 | DMA_NC},
+	{USBD_EP4RD, DMA_DR | DMA_DW8 | DMA_NC},
+	{USBD_EP5RD, DMA_DR | DMA_DW8 | DMA_NC},
+	{I2S_DATA, DMA_DW32 | DMA_NC},
+	{I2S_DATA, DMA_DR | DMA_DW32 | DMA_NC}
+};
+
+int au1000_dma_read_proc(char *buf, char **start, off_t fpos,
+			 int length, int *eof, void *data)
+{
+	int i, len = 0;
+	struct dma_chan *chan;
+
+	for (i = 0; i < NUM_AU1000_DMA_CHANNELS; i++) {
+		chan = get_dma_chan(i);
+		if (chan != NULL)
+			len += sprintf(buf + len, "%2d: %s\n",
+				       i, chan->dev_str);
+	}
+
+	if (fpos >= len) {
+		*start = buf;
+		*eof = 1;
+		return 0;
+	}
+	*start = buf + fpos;
+	len -= fpos;
+	if (len > length)
+		return length;
+	*eof = 1;
+	return len;
+}
+
+/* Device FIFO addresses and default DMA modes - 2nd bank */
+static const struct dma_dev dma_dev_table_bank2[DMA_NUM_DEV_BANK2] = {
+	{ SD0_XMIT_FIFO, DMA_DS | DMA_DW8 },		/* coherent */
+	{ SD0_RECV_FIFO, DMA_DS | DMA_DR | DMA_DW8 },	/* coherent */
+	{ SD1_XMIT_FIFO, DMA_DS | DMA_DW8 },		/* coherent */
+	{ SD1_RECV_FIFO, DMA_DS | DMA_DR | DMA_DW8 }	/* coherent */
+};
+
+void dump_au1000_dma_channel(unsigned int dmanr)
+{
+	struct dma_chan *chan;
+
+	if (dmanr >= NUM_AU1000_DMA_CHANNELS)
+		return;
+	chan = &au1000_dma_table[dmanr];
+
+	printk(KERN_INFO "Au1000 DMA%d Register Dump:\n", dmanr);
+	printk(KERN_INFO "  mode = 0x%08x\n",
+	       au_readl(chan->io + DMA_MODE_SET));
+	printk(KERN_INFO "  addr = 0x%08x\n",
+	       au_readl(chan->io + DMA_PERIPHERAL_ADDR));
+	printk(KERN_INFO "  start0 = 0x%08x\n",
+	       au_readl(chan->io + DMA_BUFFER0_START));
+	printk(KERN_INFO "  start1 = 0x%08x\n",
+	       au_readl(chan->io + DMA_BUFFER1_START));
+	printk(KERN_INFO "  count0 = 0x%08x\n",
+	       au_readl(chan->io + DMA_BUFFER0_COUNT));
+	printk(KERN_INFO "  count1 = 0x%08x\n",
+	       au_readl(chan->io + DMA_BUFFER1_COUNT));
+}
+
+/*
+ * Finds a free channel, and binds the requested device to it.
+ * Returns the allocated channel number, or negative on error.
+ * Requests the DMA done IRQ if irqhandler != NULL.
+ */
+int request_au1000_dma(int dev_id, const char *dev_str,
+		       irq_handler_t irqhandler,
+		       unsigned long irqflags,
+		       void *irq_dev_id)
+{
+	struct dma_chan *chan;
+	const struct dma_dev *dev;
+	int i, ret;
+
+#if defined(CONFIG_SOC_AU1100)
+	if (dev_id < 0 || dev_id >= (DMA_NUM_DEV + DMA_NUM_DEV_BANK2))
+		return -EINVAL;
+#else
+	if (dev_id < 0 || dev_id >= DMA_NUM_DEV)
+		return -EINVAL;
+#endif
+
+	for (i = 0; i < NUM_AU1000_DMA_CHANNELS; i++)
+		if (au1000_dma_table[i].dev_id < 0)
+			break;
+
+	if (i == NUM_AU1000_DMA_CHANNELS)
+		return -ENODEV;
+
+	chan = &au1000_dma_table[i];
+
+	if (dev_id >= DMA_NUM_DEV) {
+		dev_id -= DMA_NUM_DEV;
+		dev = &dma_dev_table_bank2[dev_id];
+	} else
+		dev = &dma_dev_table[dev_id];
+
+	if (irqhandler) {
+		chan->irq = AU1000_DMA_INT_BASE + i;
+		chan->irq_dev = irq_dev_id;
+		ret = request_irq(chan->irq, irqhandler, irqflags, dev_str,
+				  chan->irq_dev);
+		if (ret) {
+			chan->irq = 0;
+			chan->irq_dev = NULL;
+			return ret;
+		}
+	} else {
+		chan->irq = 0;
+		chan->irq_dev = NULL;
+	}
+
+	/* fill it in */
+	chan->io = DMA_CHANNEL_BASE + i * DMA_CHANNEL_LEN;
+	chan->dev_id = dev_id;
+	chan->dev_str = dev_str;
+	chan->fifo_addr = dev->fifo_addr;
+	chan->mode = dev->dma_mode;
+
+	/* initialize the channel before returning */
+	init_dma(i);
+
+	return i;
+}
+EXPORT_SYMBOL(request_au1000_dma);
+
+void free_au1000_dma(unsigned int dmanr)
+{
+	struct dma_chan *chan = get_dma_chan(dmanr);
+
+	if (!chan) {
+		printk(KERN_ERR "Error trying to free DMA%d\n", dmanr);
+		return;
+	}
+
+	disable_dma(dmanr);
+	if (chan->irq)
+		free_irq(chan->irq, chan->irq_dev);
+
+	chan->irq = 0;
+	chan->irq_dev = NULL;
+	chan->dev_id = -1;
+}
+EXPORT_SYMBOL(free_au1000_dma);
+
+#endif /* AU1000 AU1500 AU1100 */
diff --git a/arch/mips/alchemy/common/gpio.c b/arch/mips/alchemy/common/gpio.c
new file mode 100644
index 00000000000..e660ddd611c
--- /dev/null
+++ b/arch/mips/alchemy/common/gpio.c
@@ -0,0 +1,148 @@
+/*
+ *  Copyright (C) 2007, OpenWrt.org, Florian Fainelli <florian@openwrt.org>
+ *  	Architecture specific GPIO support
+ *
+ *  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  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
+ *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
+ *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  Notes :
+ * 	au1000 SoC have only one GPIO line : GPIO1
+ * 	others have a second one : GPIO2
+ */
+
+#include <linux/module.h>
+
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/gpio.h>
+
+#define gpio1 sys
+#if !defined(CONFIG_SOC_AU1000)
+
+static struct au1x00_gpio2 *const gpio2 = (struct au1x00_gpio2 *) GPIO2_BASE;
+#define GPIO2_OUTPUT_ENABLE_MASK 	0x00010000
+
+static int au1xxx_gpio2_read(unsigned gpio)
+{
+	gpio -= AU1XXX_GPIO_BASE;
+	return ((gpio2->pinstate >> gpio) & 0x01);
+}
+
+static void au1xxx_gpio2_write(unsigned gpio, int value)
+{
+	gpio -= AU1XXX_GPIO_BASE;
+
+	gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | ((!!value) << gpio);
+}
+
+static int au1xxx_gpio2_direction_input(unsigned gpio)
+{
+	gpio -= AU1XXX_GPIO_BASE;
+	gpio2->dir &= ~(0x01 << gpio);
+	return 0;
+}
+
+static int au1xxx_gpio2_direction_output(unsigned gpio, int value)
+{
+	gpio -= AU1XXX_GPIO_BASE;
+	gpio2->dir |= 0x01 << gpio;
+	gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | ((!!value) << gpio);
+	return 0;
+}
+
+#endif /* !defined(CONFIG_SOC_AU1000) */
+
+static int au1xxx_gpio1_read(unsigned gpio)
+{
+	return (gpio1->pinstaterd >> gpio) & 0x01;
+}
+
+static void au1xxx_gpio1_write(unsigned gpio, int value)
+{
+	if (value)
+		gpio1->outputset = (0x01 << gpio);
+	else
+		/* Output a zero */
+		gpio1->outputclr = (0x01 << gpio);
+}
+
+static int au1xxx_gpio1_direction_input(unsigned gpio)
+{
+	gpio1->pininputen = (0x01 << gpio);
+	return 0;
+}
+
+static int au1xxx_gpio1_direction_output(unsigned gpio, int value)
+{
+	gpio1->trioutclr = (0x01 & gpio);
+	au1xxx_gpio1_write(gpio, value);
+	return 0;
+}
+
+int au1xxx_gpio_get_value(unsigned gpio)
+{
+	if (gpio >= AU1XXX_GPIO_BASE)
+#if defined(CONFIG_SOC_AU1000)
+		return 0;
+#else
+		return au1xxx_gpio2_read(gpio);
+#endif
+	else
+		return au1xxx_gpio1_read(gpio);
+}
+EXPORT_SYMBOL(au1xxx_gpio_get_value);
+
+void au1xxx_gpio_set_value(unsigned gpio, int value)
+{
+	if (gpio >= AU1XXX_GPIO_BASE)
+#if defined(CONFIG_SOC_AU1000)
+		;
+#else
+		au1xxx_gpio2_write(gpio, value);
+#endif
+	else
+		au1xxx_gpio1_write(gpio, value);
+}
+EXPORT_SYMBOL(au1xxx_gpio_set_value);
+
+int au1xxx_gpio_direction_input(unsigned gpio)
+{
+	if (gpio >= AU1XXX_GPIO_BASE)
+#if defined(CONFIG_SOC_AU1000)
+		return -ENODEV;
+#else
+		return au1xxx_gpio2_direction_input(gpio);
+#endif
+
+	return au1xxx_gpio1_direction_input(gpio);
+}
+EXPORT_SYMBOL(au1xxx_gpio_direction_input);
+
+int au1xxx_gpio_direction_output(unsigned gpio, int value)
+{
+	if (gpio >= AU1XXX_GPIO_BASE)
+#if defined(CONFIG_SOC_AU1000)
+		return -ENODEV;
+#else
+		return au1xxx_gpio2_direction_output(gpio, value);
+#endif
+
+	return au1xxx_gpio1_direction_output(gpio, value);
+}
+EXPORT_SYMBOL(au1xxx_gpio_direction_output);
diff --git a/arch/mips/alchemy/common/irq.c b/arch/mips/alchemy/common/irq.c
new file mode 100644
index 00000000000..40c6ceceb5f
--- /dev/null
+++ b/arch/mips/alchemy/common/irq.c
@@ -0,0 +1,596 @@
+/*
+ * Copyright 2001, 2007-2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
+ *
+ *  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  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
+ *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
+ *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/bitops.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <asm/irq_cpu.h>
+#include <asm/mipsregs.h>
+#include <asm/mach-au1x00/au1000.h>
+#ifdef CONFIG_MIPS_PB1000
+#include <asm/mach-pb1x00/pb1000.h>
+#endif
+
+#define EXT_INTC0_REQ0 2 /* IP 2 */
+#define EXT_INTC0_REQ1 3 /* IP 3 */
+#define EXT_INTC1_REQ0 4 /* IP 4 */
+#define EXT_INTC1_REQ1 5 /* IP 5 */
+#define MIPS_TIMER_IP  7 /* IP 7 */
+
+void (*board_init_irq)(void) __initdata = NULL;
+
+static DEFINE_SPINLOCK(irq_lock);
+
+#ifdef CONFIG_PM
+
+/*
+ * Save/restore the interrupt controller state.
+ * Called from the save/restore core registers as part of the
+ * au_sleep function in power.c.....maybe I should just pm_register()
+ * them instead?
+ */
+static unsigned int	sleep_intctl_config0[2];
+static unsigned int	sleep_intctl_config1[2];
+static unsigned int	sleep_intctl_config2[2];
+static unsigned int	sleep_intctl_src[2];
+static unsigned int	sleep_intctl_assign[2];
+static unsigned int	sleep_intctl_wake[2];
+static unsigned int	sleep_intctl_mask[2];
+
+void save_au1xxx_intctl(void)
+{
+	sleep_intctl_config0[0] = au_readl(IC0_CFG0RD);
+	sleep_intctl_config1[0] = au_readl(IC0_CFG1RD);
+	sleep_intctl_config2[0] = au_readl(IC0_CFG2RD);
+	sleep_intctl_src[0] = au_readl(IC0_SRCRD);
+	sleep_intctl_assign[0] = au_readl(IC0_ASSIGNRD);
+	sleep_intctl_wake[0] = au_readl(IC0_WAKERD);
+	sleep_intctl_mask[0] = au_readl(IC0_MASKRD);
+
+	sleep_intctl_config0[1] = au_readl(IC1_CFG0RD);
+	sleep_intctl_config1[1] = au_readl(IC1_CFG1RD);
+	sleep_intctl_config2[1] = au_readl(IC1_CFG2RD);
+	sleep_intctl_src[1] = au_readl(IC1_SRCRD);
+	sleep_intctl_assign[1] = au_readl(IC1_ASSIGNRD);
+	sleep_intctl_wake[1] = au_readl(IC1_WAKERD);
+	sleep_intctl_mask[1] = au_readl(IC1_MASKRD);
+}
+
+/*
+ * For most restore operations, we clear the entire register and
+ * then set the bits we found during the save.
+ */
+void restore_au1xxx_intctl(void)
+{
+	au_writel(0xffffffff, IC0_MASKCLR); au_sync();
+
+	au_writel(0xffffffff, IC0_CFG0CLR); au_sync();
+	au_writel(sleep_intctl_config0[0], IC0_CFG0SET); au_sync();
+	au_writel(0xffffffff, IC0_CFG1CLR); au_sync();
+	au_writel(sleep_intctl_config1[0], IC0_CFG1SET); au_sync();
+	au_writel(0xffffffff, IC0_CFG2CLR); au_sync();
+	au_writel(sleep_intctl_config2[0], IC0_CFG2SET); au_sync();
+	au_writel(0xffffffff, IC0_SRCCLR); au_sync();
+	au_writel(sleep_intctl_src[0], IC0_SRCSET); au_sync();
+	au_writel(0xffffffff, IC0_ASSIGNCLR); au_sync();
+	au_writel(sleep_intctl_assign[0], IC0_ASSIGNSET); au_sync();
+	au_writel(0xffffffff, IC0_WAKECLR); au_sync();
+	au_writel(sleep_intctl_wake[0], IC0_WAKESET); au_sync();
+	au_writel(0xffffffff, IC0_RISINGCLR); au_sync();
+	au_writel(0xffffffff, IC0_FALLINGCLR); au_sync();
+	au_writel(0x00000000, IC0_TESTBIT); au_sync();
+
+	au_writel(0xffffffff, IC1_MASKCLR); au_sync();
+
+	au_writel(0xffffffff, IC1_CFG0CLR); au_sync();
+	au_writel(sleep_intctl_config0[1], IC1_CFG0SET); au_sync();
+	au_writel(0xffffffff, IC1_CFG1CLR); au_sync();
+	au_writel(sleep_intctl_config1[1], IC1_CFG1SET); au_sync();
+	au_writel(0xffffffff, IC1_CFG2CLR); au_sync();
+	au_writel(sleep_intctl_config2[1], IC1_CFG2SET); au_sync();
+	au_writel(0xffffffff, IC1_SRCCLR); au_sync();
+	au_writel(sleep_intctl_src[1], IC1_SRCSET); au_sync();
+	au_writel(0xffffffff, IC1_ASSIGNCLR); au_sync();
+	au_writel(sleep_intctl_assign[1], IC1_ASSIGNSET); au_sync();
+	au_writel(0xffffffff, IC1_WAKECLR); au_sync();
+	au_writel(sleep_intctl_wake[1], IC1_WAKESET); au_sync();
+	au_writel(0xffffffff, IC1_RISINGCLR); au_sync();
+	au_writel(0xffffffff, IC1_FALLINGCLR); au_sync();
+	au_writel(0x00000000, IC1_TESTBIT); au_sync();
+
+	au_writel(sleep_intctl_mask[1], IC1_MASKSET); au_sync();
+
+	au_writel(sleep_intctl_mask[0], IC0_MASKSET); au_sync();
+}
+#endif /* CONFIG_PM */
+
+
+inline void local_enable_irq(unsigned int irq_nr)
+{
+	unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+	if (bit >= 32) {
+		au_writel(1 << (bit - 32), IC1_MASKSET);
+		au_writel(1 << (bit - 32), IC1_WAKESET);
+	} else {
+		au_writel(1 << bit, IC0_MASKSET);
+		au_writel(1 << bit, IC0_WAKESET);
+	}
+	au_sync();
+}
+
+
+inline void local_disable_irq(unsigned int irq_nr)
+{
+	unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+	if (bit >= 32) {
+		au_writel(1 << (bit - 32), IC1_MASKCLR);
+		au_writel(1 << (bit - 32), IC1_WAKECLR);
+	} else {
+		au_writel(1 << bit, IC0_MASKCLR);
+		au_writel(1 << bit, IC0_WAKECLR);
+	}
+	au_sync();
+}
+
+
+static inline void mask_and_ack_rise_edge_irq(unsigned int irq_nr)
+{
+	unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+	if (bit >= 32) {
+		au_writel(1 << (bit - 32), IC1_RISINGCLR);
+		au_writel(1 << (bit - 32), IC1_MASKCLR);
+	} else {
+		au_writel(1 << bit, IC0_RISINGCLR);
+		au_writel(1 << bit, IC0_MASKCLR);
+	}
+	au_sync();
+}
+
+
+static inline void mask_and_ack_fall_edge_irq(unsigned int irq_nr)
+{
+	unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+	if (bit >= 32) {
+		au_writel(1 << (bit - 32), IC1_FALLINGCLR);
+		au_writel(1 << (bit - 32), IC1_MASKCLR);
+	} else {
+		au_writel(1 << bit, IC0_FALLINGCLR);
+		au_writel(1 << bit, IC0_MASKCLR);
+	}
+	au_sync();
+}
+
+
+static inline void mask_and_ack_either_edge_irq(unsigned int irq_nr)
+{
+	unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+	/*
+	 * This may assume that we don't get interrupts from
+	 * both edges at once, or if we do, that we don't care.
+	 */
+	if (bit >= 32) {
+		au_writel(1 << (bit - 32), IC1_FALLINGCLR);
+		au_writel(1 << (bit - 32), IC1_RISINGCLR);
+		au_writel(1 << (bit - 32), IC1_MASKCLR);
+	} else {
+		au_writel(1 << bit, IC0_FALLINGCLR);
+		au_writel(1 << bit, IC0_RISINGCLR);
+		au_writel(1 << bit, IC0_MASKCLR);
+	}
+	au_sync();
+}
+
+static inline void mask_and_ack_level_irq(unsigned int irq_nr)
+{
+	local_disable_irq(irq_nr);
+	au_sync();
+#if defined(CONFIG_MIPS_PB1000)
+	if (irq_nr == AU1000_GPIO_15) {
+		au_writel(0x8000, PB1000_MDR); /* ack int */
+		au_sync();
+	}
+#endif
+}
+
+static void end_irq(unsigned int irq_nr)
+{
+	if (!(irq_desc[irq_nr].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
+		local_enable_irq(irq_nr);
+
+#if defined(CONFIG_MIPS_PB1000)
+	if (irq_nr == AU1000_GPIO_15) {
+		au_writel(0x4000, PB1000_MDR); /* enable int */
+		au_sync();
+	}
+#endif
+}
+
+unsigned long save_local_and_disable(int controller)
+{
+	int i;
+	unsigned long flags, mask;
+
+	spin_lock_irqsave(&irq_lock, flags);
+	if (controller) {
+		mask = au_readl(IC1_MASKSET);
+		for (i = 32; i < 64; i++)
+			local_disable_irq(i);
+	} else {
+		mask = au_readl(IC0_MASKSET);
+		for (i = 0; i < 32; i++)
+			local_disable_irq(i);
+	}
+	spin_unlock_irqrestore(&irq_lock, flags);
+
+	return mask;
+}
+
+void restore_local_and_enable(int controller, unsigned long mask)
+{
+	int i;
+	unsigned long flags, new_mask;
+
+	spin_lock_irqsave(&irq_lock, flags);
+	for (i = 0; i < 32; i++)
+		if (mask & (1 << i)) {
+			if (controller)
+				local_enable_irq(i + 32);
+			else
+				local_enable_irq(i);
+		}
+
+	if (controller)
+		new_mask = au_readl(IC1_MASKSET);
+	else
+		new_mask = au_readl(IC0_MASKSET);
+
+	spin_unlock_irqrestore(&irq_lock, flags);
+}
+
+
+static struct irq_chip rise_edge_irq_type = {
+	.name		= "Au1000 Rise Edge",
+	.ack		= mask_and_ack_rise_edge_irq,
+	.mask		= local_disable_irq,
+	.mask_ack	= mask_and_ack_rise_edge_irq,
+	.unmask		= local_enable_irq,
+	.end		= end_irq,
+};
+
+static struct irq_chip fall_edge_irq_type = {
+	.name		= "Au1000 Fall Edge",
+	.ack		= mask_and_ack_fall_edge_irq,
+	.mask		= local_disable_irq,
+	.mask_ack	= mask_and_ack_fall_edge_irq,
+	.unmask		= local_enable_irq,
+	.end		= end_irq,
+};
+
+static struct irq_chip either_edge_irq_type = {
+	.name		= "Au1000 Rise or Fall Edge",
+	.ack		= mask_and_ack_either_edge_irq,
+	.mask		= local_disable_irq,
+	.mask_ack	= mask_and_ack_either_edge_irq,
+	.unmask		= local_enable_irq,
+	.end		= end_irq,
+};
+
+static struct irq_chip level_irq_type = {
+	.name		= "Au1000 Level",
+	.ack		= mask_and_ack_level_irq,
+	.mask		= local_disable_irq,
+	.mask_ack	= mask_and_ack_level_irq,
+	.unmask		= local_enable_irq,
+	.end		= end_irq,
+};
+
+static void __init setup_local_irq(unsigned int irq_nr, int type, int int_req)
+{
+	unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
+
+	if (irq_nr > AU1000_MAX_INTR)
+		return;
+
+	/* Config2[n], Config1[n], Config0[n] */
+	if (bit >= 32) {
+		switch (type) {
+		case INTC_INT_RISE_EDGE: /* 0:0:1 */
+			au_writel(1 << (bit - 32), IC1_CFG2CLR);
+			au_writel(1 << (bit - 32), IC1_CFG1CLR);
+			au_writel(1 << (bit - 32), IC1_CFG0SET);
+			set_irq_chip(irq_nr, &rise_edge_irq_type);
+			break;
+		case INTC_INT_FALL_EDGE: /* 0:1:0 */
+			au_writel(1 << (bit - 32), IC1_CFG2CLR);
+			au_writel(1 << (bit - 32), IC1_CFG1SET);
+			au_writel(1 << (bit - 32), IC1_CFG0CLR);
+			set_irq_chip(irq_nr, &fall_edge_irq_type);
+			break;
+		case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
+			au_writel(1 << (bit - 32), IC1_CFG2CLR);
+			au_writel(1 << (bit - 32), IC1_CFG1SET);
+			au_writel(1 << (bit - 32), IC1_CFG0SET);
+			set_irq_chip(irq_nr, &either_edge_irq_type);
+			break;
+		case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
+			au_writel(1 << (bit - 32), IC1_CFG2SET);
+			au_writel(1 << (bit - 32), IC1_CFG1CLR);
+			au_writel(1 << (bit - 32), IC1_CFG0SET);
+			set_irq_chip(irq_nr, &level_irq_type);
+			break;
+		case INTC_INT_LOW_LEVEL: /* 1:1:0 */
+			au_writel(1 << (bit - 32), IC1_CFG2SET);
+			au_writel(1 << (bit - 32), IC1_CFG1SET);
+			au_writel(1 << (bit - 32), IC1_CFG0CLR);
+			set_irq_chip(irq_nr, &level_irq_type);
+			break;
+		case INTC_INT_DISABLED: /* 0:0:0 */
+			au_writel(1 << (bit - 32), IC1_CFG0CLR);
+			au_writel(1 << (bit - 32), IC1_CFG1CLR);
+			au_writel(1 << (bit - 32), IC1_CFG2CLR);
+			break;
+		default: /* disable the interrupt */
+			printk(KERN_WARNING "unexpected int type %d (irq %d)\n",
+			       type, irq_nr);
+			au_writel(1 << (bit - 32), IC1_CFG0CLR);
+			au_writel(1 << (bit - 32), IC1_CFG1CLR);
+			au_writel(1 << (bit - 32), IC1_CFG2CLR);
+			return;
+		}
+		if (int_req) /* assign to interrupt request 1 */
+			au_writel(1 << (bit - 32), IC1_ASSIGNCLR);
+		else	     /* assign to interrupt request 0 */
+			au_writel(1 << (bit - 32), IC1_ASSIGNSET);
+		au_writel(1 << (bit - 32), IC1_SRCSET);
+		au_writel(1 << (bit - 32), IC1_MASKCLR);
+		au_writel(1 << (bit - 32), IC1_WAKECLR);
+	} else {
+		switch (type) {
+		case INTC_INT_RISE_EDGE: /* 0:0:1 */
+			au_writel(1 << bit, IC0_CFG2CLR);
+			au_writel(1 << bit, IC0_CFG1CLR);
+			au_writel(1 << bit, IC0_CFG0SET);
+			set_irq_chip(irq_nr, &rise_edge_irq_type);
+			break;
+		case INTC_INT_FALL_EDGE: /* 0:1:0 */
+			au_writel(1 << bit, IC0_CFG2CLR);
+			au_writel(1 << bit, IC0_CFG1SET);
+			au_writel(1 << bit, IC0_CFG0CLR);
+			set_irq_chip(irq_nr, &fall_edge_irq_type);
+			break;
+		case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
+			au_writel(1 << bit, IC0_CFG2CLR);
+			au_writel(1 << bit, IC0_CFG1SET);
+			au_writel(1 << bit, IC0_CFG0SET);
+			set_irq_chip(irq_nr, &either_edge_irq_type);
+			break;
+		case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
+			au_writel(1 << bit, IC0_CFG2SET);
+			au_writel(1 << bit, IC0_CFG1CLR);
+			au_writel(1 << bit, IC0_CFG0SET);
+			set_irq_chip(irq_nr, &level_irq_type);
+			break;
+		case INTC_INT_LOW_LEVEL: /* 1:1:0 */
+			au_writel(1 << bit, IC0_CFG2SET);
+			au_writel(1 << bit, IC0_CFG1SET);
+			au_writel(1 << bit, IC0_CFG0CLR);
+			set_irq_chip(irq_nr, &level_irq_type);
+			break;
+		case INTC_INT_DISABLED: /* 0:0:0 */
+			au_writel(1 << bit, IC0_CFG0CLR);
+			au_writel(1 << bit, IC0_CFG1CLR);
+			au_writel(1 << bit, IC0_CFG2CLR);
+			break;
+		default: /* disable the interrupt */
+			printk(KERN_WARNING "unexpected int type %d (irq %d)\n",
+			       type, irq_nr);
+			au_writel(1 << bit, IC0_CFG0CLR);
+			au_writel(1 << bit, IC0_CFG1CLR);
+			au_writel(1 << bit, IC0_CFG2CLR);
+			return;
+		}
+		if (int_req) /* assign to interrupt request 1 */
+			au_writel(1 << bit, IC0_ASSIGNCLR);
+		else	     /* assign to interrupt request 0 */
+			au_writel(1 << bit, IC0_ASSIGNSET);
+		au_writel(1 << bit, IC0_SRCSET);
+		au_writel(1 << bit, IC0_MASKCLR);
+		au_writel(1 << bit, IC0_WAKECLR);
+	}
+	au_sync();
+}
+
+/*
+ * Interrupts are nested. Even if an interrupt handler is registered
+ * as "fast", we might get another interrupt before we return from
+ * intcX_reqX_irqdispatch().
+ */
+
+static void intc0_req0_irqdispatch(void)
+{
+	static unsigned long intc0_req0;
+	unsigned int bit;
+
+	intc0_req0 |= au_readl(IC0_REQ0INT);
+
+	if (!intc0_req0)
+		return;
+
+#ifdef AU1000_USB_DEV_REQ_INT
+	/*
+	 * Because of the tight timing of SETUP token to reply
+	 * transactions, the USB devices-side packet complete
+	 * interrupt needs the highest priority.
+	 */
+	if ((intc0_req0 & (1 << AU1000_USB_DEV_REQ_INT))) {
+		intc0_req0 &= ~(1 << AU1000_USB_DEV_REQ_INT);
+		do_IRQ(AU1000_USB_DEV_REQ_INT);
+		return;
+	}
+#endif
+	bit = __ffs(intc0_req0);
+	intc0_req0 &= ~(1 << bit);
+	do_IRQ(AU1000_INTC0_INT_BASE + bit);
+}
+
+
+static void intc0_req1_irqdispatch(void)
+{
+	static unsigned long intc0_req1;
+	unsigned int bit;
+
+	intc0_req1 |= au_readl(IC0_REQ1INT);
+
+	if (!intc0_req1)
+		return;
+
+	bit = __ffs(intc0_req1);
+	intc0_req1 &= ~(1 << bit);
+	do_IRQ(AU1000_INTC0_INT_BASE + bit);
+}
+
+
+/*
+ * Interrupt Controller 1:
+ * interrupts 32 - 63
+ */
+static void intc1_req0_irqdispatch(void)
+{
+	static unsigned long intc1_req0;
+	unsigned int bit;
+
+	intc1_req0 |= au_readl(IC1_REQ0INT);
+
+	if (!intc1_req0)
+		return;
+
+	bit = __ffs(intc1_req0);
+	intc1_req0 &= ~(1 << bit);
+	do_IRQ(AU1000_INTC1_INT_BASE + bit);
+}
+
+
+static void intc1_req1_irqdispatch(void)
+{
+	static unsigned long intc1_req1;
+	unsigned int bit;
+
+	intc1_req1 |= au_readl(IC1_REQ1INT);
+
+	if (!intc1_req1)
+		return;
+
+	bit = __ffs(intc1_req1);
+	intc1_req1 &= ~(1 << bit);
+	do_IRQ(AU1000_INTC1_INT_BASE + bit);
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+	unsigned int pending = read_c0_status() & read_c0_cause();
+
+	if (pending & CAUSEF_IP7)
+		do_IRQ(MIPS_CPU_IRQ_BASE + 7);
+	else if (pending & CAUSEF_IP2)
+		intc0_req0_irqdispatch();
+	else if (pending & CAUSEF_IP3)
+		intc0_req1_irqdispatch();
+	else if (pending & CAUSEF_IP4)
+		intc1_req0_irqdispatch();
+	else if (pending  & CAUSEF_IP5)
+		intc1_req1_irqdispatch();
+	else
+		spurious_interrupt();
+}
+
+void __init arch_init_irq(void)
+{
+	int i;
+	struct au1xxx_irqmap *imp;
+	extern struct au1xxx_irqmap au1xxx_irq_map[];
+	extern struct au1xxx_irqmap au1xxx_ic0_map[];
+	extern int au1xxx_nr_irqs;
+	extern int au1xxx_ic0_nr_irqs;
+
+	/*
+	 * Initialize interrupt controllers to a safe state.
+	 */
+	au_writel(0xffffffff, IC0_CFG0CLR);
+	au_writel(0xffffffff, IC0_CFG1CLR);
+	au_writel(0xffffffff, IC0_CFG2CLR);
+	au_writel(0xffffffff, IC0_MASKCLR);
+	au_writel(0xffffffff, IC0_ASSIGNSET);
+	au_writel(0xffffffff, IC0_WAKECLR);
+	au_writel(0xffffffff, IC0_SRCSET);
+	au_writel(0xffffffff, IC0_FALLINGCLR);
+	au_writel(0xffffffff, IC0_RISINGCLR);
+	au_writel(0x00000000, IC0_TESTBIT);
+
+	au_writel(0xffffffff, IC1_CFG0CLR);
+	au_writel(0xffffffff, IC1_CFG1CLR);
+	au_writel(0xffffffff, IC1_CFG2CLR);
+	au_writel(0xffffffff, IC1_MASKCLR);
+	au_writel(0xffffffff, IC1_ASSIGNSET);
+	au_writel(0xffffffff, IC1_WAKECLR);
+	au_writel(0xffffffff, IC1_SRCSET);
+	au_writel(0xffffffff, IC1_FALLINGCLR);
+	au_writel(0xffffffff, IC1_RISINGCLR);
+	au_writel(0x00000000, IC1_TESTBIT);
+
+	mips_cpu_irq_init();
+
+	/*
+	 * Initialize IC0, which is fixed per processor.
+	 */
+	imp = au1xxx_ic0_map;
+	for (i = 0; i < au1xxx_ic0_nr_irqs; i++) {
+		setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
+		imp++;
+	}
+
+	/*
+	 * Now set up the irq mapping for the board.
+	 */
+	imp = au1xxx_irq_map;
+	for (i = 0; i < au1xxx_nr_irqs; i++) {
+		setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
+		imp++;
+	}
+
+	set_c0_status(IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4);
+
+	/* Board specific IRQ initialization.
+	*/
+	if (board_init_irq)
+		board_init_irq();
+}
diff --git a/arch/mips/alchemy/common/pci.c b/arch/mips/alchemy/common/pci.c
new file mode 100644
index 00000000000..7866cf50cf9
--- /dev/null
+++ b/arch/mips/alchemy/common/pci.c
@@ -0,0 +1,104 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ *	Alchemy/AMD Au1x00 PCI support.
+ *
+ * Copyright 2001-2003, 2007-2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
+ *
+ *  Support for all devices (greater than 16) added by David Gathright.
+ *
+ *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/mach-au1x00/au1000.h>
+
+/* TBD */
+static struct resource pci_io_resource = {
+	.start	= PCI_IO_START,
+	.end	= PCI_IO_END,
+	.name	= "PCI IO space",
+	.flags	= IORESOURCE_IO
+};
+
+static struct resource pci_mem_resource = {
+	.start	= PCI_MEM_START,
+	.end	= PCI_MEM_END,
+	.name	= "PCI memory space",
+	.flags	= IORESOURCE_MEM
+};
+
+extern struct pci_ops au1x_pci_ops;
+
+static struct pci_controller au1x_controller = {
+	.pci_ops	= &au1x_pci_ops,
+	.io_resource	= &pci_io_resource,
+	.mem_resource	= &pci_mem_resource,
+};
+
+#if defined(CONFIG_SOC_AU1500) || defined(CONFIG_SOC_AU1550)
+static unsigned long virt_io_addr;
+#endif
+
+static int __init au1x_pci_setup(void)
+{
+	extern void au1x_pci_cfg_init(void);
+
+#if defined(CONFIG_SOC_AU1500) || defined(CONFIG_SOC_AU1550)
+	virt_io_addr = (unsigned long)ioremap(Au1500_PCI_IO_START,
+			Au1500_PCI_IO_END - Au1500_PCI_IO_START + 1);
+
+	if (!virt_io_addr) {
+		printk(KERN_ERR "Unable to ioremap pci space\n");
+		return 1;
+	}
+	au1x_controller.io_map_base = virt_io_addr;
+
+#ifdef CONFIG_DMA_NONCOHERENT
+	{
+		/*
+		 *  Set the NC bit in controller for Au1500 pre-AC silicon
+		 */
+		u32 prid = read_c0_prid();
+
+		if ((prid & 0xFF000000) == 0x01000000 && prid < 0x01030202) {
+			au_writel((1 << 16) | au_readl(Au1500_PCI_CFG),
+				  Au1500_PCI_CFG);
+			printk(KERN_INFO "Non-coherent PCI accesses enabled\n");
+		}
+	}
+#endif
+
+	set_io_port_base(virt_io_addr);
+#endif
+
+	au1x_pci_cfg_init();
+
+	register_pci_controller(&au1x_controller);
+	return 0;
+}
+
+arch_initcall(au1x_pci_setup);
diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c
new file mode 100644
index 00000000000..dc8a67efac2
--- /dev/null
+++ b/arch/mips/alchemy/common/platform.c
@@ -0,0 +1,319 @@
+/*
+ * Platform device support for Au1x00 SoCs.
+ *
+ * Copyright 2004, Matt Porter <mporter@kernel.crashing.org>
+ *
+ * (C) Copyright Embedded Alley Solutions, Inc 2005
+ * Author: Pantelis Antoniou <pantelis@embeddedalley.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+#include <linux/init.h>
+
+#include <asm/mach-au1x00/au1xxx.h>
+
+#define PORT(_base, _irq)				\
+	{						\
+		.iobase		= _base,		\
+		.membase	= (void __iomem *)_base,\
+		.mapbase	= CPHYSADDR(_base),	\
+		.irq		= _irq,			\
+		.regshift	= 2,			\
+		.iotype		= UPIO_AU,		\
+		.flags		= UPF_SKIP_TEST 	\
+	}
+
+static struct plat_serial8250_port au1x00_uart_data[] = {
+#if defined(CONFIG_SERIAL_8250_AU1X00)
+#if defined(CONFIG_SOC_AU1000)
+	PORT(UART0_ADDR, AU1000_UART0_INT),
+	PORT(UART1_ADDR, AU1000_UART1_INT),
+	PORT(UART2_ADDR, AU1000_UART2_INT),
+	PORT(UART3_ADDR, AU1000_UART3_INT),
+#elif defined(CONFIG_SOC_AU1500)
+	PORT(UART0_ADDR, AU1500_UART0_INT),
+	PORT(UART3_ADDR, AU1500_UART3_INT),
+#elif defined(CONFIG_SOC_AU1100)
+	PORT(UART0_ADDR, AU1100_UART0_INT),
+	PORT(UART1_ADDR, AU1100_UART1_INT),
+	PORT(UART3_ADDR, AU1100_UART3_INT),
+#elif defined(CONFIG_SOC_AU1550)
+	PORT(UART0_ADDR, AU1550_UART0_INT),
+	PORT(UART1_ADDR, AU1550_UART1_INT),
+	PORT(UART3_ADDR, AU1550_UART3_INT),
+#elif defined(CONFIG_SOC_AU1200)
+	PORT(UART0_ADDR, AU1200_UART0_INT),
+	PORT(UART1_ADDR, AU1200_UART1_INT),
+#endif
+#endif	/* CONFIG_SERIAL_8250_AU1X00 */
+	{ },
+};
+
+static struct platform_device au1xx0_uart_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_AU1X00,
+	.dev			= {
+		.platform_data	= au1x00_uart_data,
+	},
+};
+
+/* OHCI (USB full speed host controller) */
+static struct resource au1xxx_usb_ohci_resources[] = {
+	[0] = {
+		.start		= USB_OHCI_BASE,
+		.end		= USB_OHCI_BASE + USB_OHCI_LEN - 1,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1000_USB_HOST_INT,
+		.end		= AU1000_USB_HOST_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+/* The dmamask must be set for OHCI to work */
+static u64 ohci_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device au1xxx_usb_ohci_device = {
+	.name		= "au1xxx-ohci",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &ohci_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+	},
+	.num_resources	= ARRAY_SIZE(au1xxx_usb_ohci_resources),
+	.resource	= au1xxx_usb_ohci_resources,
+};
+
+/*** AU1100 LCD controller ***/
+
+#ifdef CONFIG_FB_AU1100
+static struct resource au1100_lcd_resources[] = {
+	[0] = {
+		.start          = LCD_PHYS_ADDR,
+		.end            = LCD_PHYS_ADDR + 0x800 - 1,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start          = AU1100_LCD_INT,
+		.end            = AU1100_LCD_INT,
+		.flags          = IORESOURCE_IRQ,
+	}
+};
+
+static u64 au1100_lcd_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device au1100_lcd_device = {
+	.name           = "au1100-lcd",
+	.id             = 0,
+	.dev = {
+		.dma_mask               = &au1100_lcd_dmamask,
+		.coherent_dma_mask      = DMA_32BIT_MASK,
+	},
+	.num_resources  = ARRAY_SIZE(au1100_lcd_resources),
+	.resource       = au1100_lcd_resources,
+};
+#endif
+
+#ifdef CONFIG_SOC_AU1200
+/* EHCI (USB high speed host controller) */
+static struct resource au1xxx_usb_ehci_resources[] = {
+	[0] = {
+		.start		= USB_EHCI_BASE,
+		.end		= USB_EHCI_BASE + USB_EHCI_LEN - 1,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1000_USB_HOST_INT,
+		.end		= AU1000_USB_HOST_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 ehci_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device au1xxx_usb_ehci_device = {
+	.name		= "au1xxx-ehci",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &ehci_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+	},
+	.num_resources	= ARRAY_SIZE(au1xxx_usb_ehci_resources),
+	.resource	= au1xxx_usb_ehci_resources,
+};
+
+/* Au1200 UDC (USB gadget controller) */
+static struct resource au1xxx_usb_gdt_resources[] = {
+	[0] = {
+		.start		= USB_UDC_BASE,
+		.end		= USB_UDC_BASE + USB_UDC_LEN - 1,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1200_USB_INT,
+		.end		= AU1200_USB_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct resource au1xxx_mmc_resources[] = {
+	[0] = {
+		.start          = SD0_PHYS_ADDR,
+		.end            = SD0_PHYS_ADDR + 0x7ffff,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= SD1_PHYS_ADDR,
+		.end 		= SD1_PHYS_ADDR + 0x7ffff,
+		.flags		= IORESOURCE_MEM,
+	},
+	[2] = {
+		.start          = AU1200_SD_INT,
+		.end            = AU1200_SD_INT,
+		.flags          = IORESOURCE_IRQ,
+	}
+};
+
+static u64 udc_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device au1xxx_usb_gdt_device = {
+	.name		= "au1xxx-udc",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &udc_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+	},
+	.num_resources	= ARRAY_SIZE(au1xxx_usb_gdt_resources),
+	.resource	= au1xxx_usb_gdt_resources,
+};
+
+/* Au1200 UOC (USB OTG controller) */
+static struct resource au1xxx_usb_otg_resources[] = {
+	[0] = {
+		.start		= USB_UOC_BASE,
+		.end		= USB_UOC_BASE + USB_UOC_LEN - 1,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1200_USB_INT,
+		.end		= AU1200_USB_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 uoc_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device au1xxx_usb_otg_device = {
+	.name		= "au1xxx-uoc",
+	.id		= 0,
+	.dev = {
+		.dma_mask		= &uoc_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+	},
+	.num_resources	= ARRAY_SIZE(au1xxx_usb_otg_resources),
+	.resource	= au1xxx_usb_otg_resources,
+};
+
+static struct resource au1200_lcd_resources[] = {
+	[0] = {
+		.start          = LCD_PHYS_ADDR,
+		.end            = LCD_PHYS_ADDR + 0x800 - 1,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start          = AU1200_LCD_INT,
+		.end            = AU1200_LCD_INT,
+		.flags          = IORESOURCE_IRQ,
+	}
+};
+
+static u64 au1200_lcd_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device au1200_lcd_device = {
+	.name           = "au1200-lcd",
+	.id             = 0,
+	.dev = {
+		.dma_mask               = &au1200_lcd_dmamask,
+		.coherent_dma_mask      = DMA_32BIT_MASK,
+	},
+	.num_resources  = ARRAY_SIZE(au1200_lcd_resources),
+	.resource       = au1200_lcd_resources,
+};
+
+static u64 au1xxx_mmc_dmamask =  DMA_32BIT_MASK;
+
+static struct platform_device au1xxx_mmc_device = {
+	.name = "au1xxx-mmc",
+	.id = 0,
+	.dev = {
+		.dma_mask               = &au1xxx_mmc_dmamask,
+		.coherent_dma_mask      = DMA_32BIT_MASK,
+	},
+	.num_resources  = ARRAY_SIZE(au1xxx_mmc_resources),
+	.resource       = au1xxx_mmc_resources,
+};
+#endif /* #ifdef CONFIG_SOC_AU1200 */
+
+static struct platform_device au1x00_pcmcia_device = {
+	.name 		= "au1x00-pcmcia",
+	.id 		= 0,
+};
+
+/* All Alchemy demoboards with I2C have this #define in their headers */
+#ifdef SMBUS_PSC_BASE
+static struct resource pbdb_smbus_resources[] = {
+	{
+		.start	= CPHYSADDR(SMBUS_PSC_BASE),
+		.end	= CPHYSADDR(SMBUS_PSC_BASE + 0xfffff),
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device pbdb_smbus_device = {
+	.name		= "au1xpsc_smbus",
+	.id		= 0,	/* bus number */
+	.num_resources	= ARRAY_SIZE(pbdb_smbus_resources),
+	.resource	= pbdb_smbus_resources,
+};
+#endif
+
+static struct platform_device *au1xxx_platform_devices[] __initdata = {
+	&au1xx0_uart_device,
+	&au1xxx_usb_ohci_device,
+	&au1x00_pcmcia_device,
+#ifdef CONFIG_FB_AU1100
+	&au1100_lcd_device,
+#endif
+#ifdef CONFIG_SOC_AU1200
+	&au1xxx_usb_ehci_device,
+	&au1xxx_usb_gdt_device,
+	&au1xxx_usb_otg_device,
+	&au1200_lcd_device,
+	&au1xxx_mmc_device,
+#endif
+#ifdef SMBUS_PSC_BASE
+	&pbdb_smbus_device,
+#endif
+};
+
+static int __init au1xxx_platform_init(void)
+{
+	unsigned int uartclk = get_au1x00_uart_baud_base() * 16;
+	int i;
+
+	/* Fill up uartclk. */
+	for (i = 0; au1x00_uart_data[i].flags; i++)
+		au1x00_uart_data[i].uartclk = uartclk;
+
+	return platform_add_devices(au1xxx_platform_devices,
+				    ARRAY_SIZE(au1xxx_platform_devices));
+}
+
+arch_initcall(au1xxx_platform_init);
diff --git a/arch/mips/alchemy/common/power.c b/arch/mips/alchemy/common/power.c
new file mode 100644
index 00000000000..bd854a6d1d8
--- /dev/null
+++ b/arch/mips/alchemy/common/power.c
@@ -0,0 +1,465 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ *	Au1xx0 Power Management routines.
+ *
+ * Copyright 2001, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ *  Some of the routines are right out of init/main.c, whose
+ *  copyrights apply here.
+ *
+ *  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  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
+ *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
+ *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/pm.h>
+#include <linux/sysctl.h>
+#include <linux/jiffies.h>
+
+#include <asm/uaccess.h>
+#include <asm/cacheflush.h>
+#include <asm/mach-au1x00/au1000.h>
+
+#ifdef CONFIG_PM
+
+#define DEBUG 1
+#ifdef	DEBUG
+#define DPRINTK(fmt, args...)	printk(KERN_DEBUG "%s: " fmt, __func__, ## args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+
+static void au1000_calibrate_delay(void);
+
+extern unsigned long save_local_and_disable(int controller);
+extern void restore_local_and_enable(int controller, unsigned long mask);
+extern void local_enable_irq(unsigned int irq_nr);
+
+static DEFINE_SPINLOCK(pm_lock);
+
+/*
+ * We need to save/restore a bunch of core registers that are
+ * either volatile or reset to some state across a processor sleep.
+ * If reading a register doesn't provide a proper result for a
+ * later restore, we have to provide a function for loading that
+ * register and save a copy.
+ *
+ * We only have to save/restore registers that aren't otherwise
+ * done as part of a driver pm_* function.
+ */
+static unsigned int	sleep_aux_pll_cntrl;
+static unsigned int	sleep_cpu_pll_cntrl;
+static unsigned int	sleep_pin_function;
+static unsigned int	sleep_uart0_inten;
+static unsigned int	sleep_uart0_fifoctl;
+static unsigned int	sleep_uart0_linectl;
+static unsigned int	sleep_uart0_clkdiv;
+static unsigned int	sleep_uart0_enable;
+static unsigned int	sleep_usbhost_enable;
+static unsigned int	sleep_usbdev_enable;
+static unsigned int	sleep_static_memctlr[4][3];
+
+/*
+ * Define this to cause the value you write to /proc/sys/pm/sleep to
+ * set the TOY timer for the amount of time you want to sleep.
+ * This is done mainly for testing, but may be useful in other cases.
+ * The value is number of 32KHz ticks to sleep.
+ */
+#define SLEEP_TEST_TIMEOUT 1
+#ifdef	SLEEP_TEST_TIMEOUT
+static int sleep_ticks;
+void wakeup_counter0_set(int ticks);
+#endif
+
+static void save_core_regs(void)
+{
+	extern void save_au1xxx_intctl(void);
+	extern void pm_eth0_shutdown(void);
+
+	/*
+	 * Do the serial ports.....these really should be a pm_*
+	 * registered function by the driver......but of course the
+	 * standard serial driver doesn't understand our Au1xxx
+	 * unique registers.
+	 */
+	sleep_uart0_inten = au_readl(UART0_ADDR + UART_IER);
+	sleep_uart0_fifoctl = au_readl(UART0_ADDR + UART_FCR);
+	sleep_uart0_linectl = au_readl(UART0_ADDR + UART_LCR);
+	sleep_uart0_clkdiv = au_readl(UART0_ADDR + UART_CLK);
+	sleep_uart0_enable = au_readl(UART0_ADDR + UART_MOD_CNTRL);
+
+	/* Shutdown USB host/device. */
+	sleep_usbhost_enable = au_readl(USB_HOST_CONFIG);
+
+	/* There appears to be some undocumented reset register.... */
+	au_writel(0, 0xb0100004); au_sync();
+	au_writel(0, USB_HOST_CONFIG); au_sync();
+
+	sleep_usbdev_enable = au_readl(USBD_ENABLE);
+	au_writel(0, USBD_ENABLE); au_sync();
+
+	/* Save interrupt controller state. */
+	save_au1xxx_intctl();
+
+	/* Clocks and PLLs. */
+	sleep_aux_pll_cntrl = au_readl(SYS_AUXPLL);
+
+	/*
+	 * We don't really need to do this one, but unless we
+	 * write it again it won't have a valid value if we
+	 * happen to read it.
+	 */
+	sleep_cpu_pll_cntrl = au_readl(SYS_CPUPLL);
+
+	sleep_pin_function = au_readl(SYS_PINFUNC);
+
+	/* Save the static memory controller configuration. */
+	sleep_static_memctlr[0][0] = au_readl(MEM_STCFG0);
+	sleep_static_memctlr[0][1] = au_readl(MEM_STTIME0);
+	sleep_static_memctlr[0][2] = au_readl(MEM_STADDR0);
+	sleep_static_memctlr[1][0] = au_readl(MEM_STCFG1);
+	sleep_static_memctlr[1][1] = au_readl(MEM_STTIME1);
+	sleep_static_memctlr[1][2] = au_readl(MEM_STADDR1);
+	sleep_static_memctlr[2][0] = au_readl(MEM_STCFG2);
+	sleep_static_memctlr[2][1] = au_readl(MEM_STTIME2);
+	sleep_static_memctlr[2][2] = au_readl(MEM_STADDR2);
+	sleep_static_memctlr[3][0] = au_readl(MEM_STCFG3);
+	sleep_static_memctlr[3][1] = au_readl(MEM_STTIME3);
+	sleep_static_memctlr[3][2] = au_readl(MEM_STADDR3);
+}
+
+static void restore_core_regs(void)
+{
+	extern void restore_au1xxx_intctl(void);
+	extern void wakeup_counter0_adjust(void);
+
+	au_writel(sleep_aux_pll_cntrl, SYS_AUXPLL); au_sync();
+	au_writel(sleep_cpu_pll_cntrl, SYS_CPUPLL); au_sync();
+	au_writel(sleep_pin_function, SYS_PINFUNC); au_sync();
+
+	/* Restore the static memory controller configuration. */
+	au_writel(sleep_static_memctlr[0][0], MEM_STCFG0);
+	au_writel(sleep_static_memctlr[0][1], MEM_STTIME0);
+	au_writel(sleep_static_memctlr[0][2], MEM_STADDR0);
+	au_writel(sleep_static_memctlr[1][0], MEM_STCFG1);
+	au_writel(sleep_static_memctlr[1][1], MEM_STTIME1);
+	au_writel(sleep_static_memctlr[1][2], MEM_STADDR1);
+	au_writel(sleep_static_memctlr[2][0], MEM_STCFG2);
+	au_writel(sleep_static_memctlr[2][1], MEM_STTIME2);
+	au_writel(sleep_static_memctlr[2][2], MEM_STADDR2);
+	au_writel(sleep_static_memctlr[3][0], MEM_STCFG3);
+	au_writel(sleep_static_memctlr[3][1], MEM_STTIME3);
+	au_writel(sleep_static_memctlr[3][2], MEM_STADDR3);
+
+	/*
+	 * Enable the UART if it was enabled before sleep.
+	 * I guess I should define module control bits........
+	 */
+	if (sleep_uart0_enable & 0x02) {
+		au_writel(0, UART0_ADDR + UART_MOD_CNTRL); au_sync();
+		au_writel(1, UART0_ADDR + UART_MOD_CNTRL); au_sync();
+		au_writel(3, UART0_ADDR + UART_MOD_CNTRL); au_sync();
+		au_writel(sleep_uart0_inten, UART0_ADDR + UART_IER); au_sync();
+		au_writel(sleep_uart0_fifoctl, UART0_ADDR + UART_FCR); au_sync();
+		au_writel(sleep_uart0_linectl, UART0_ADDR + UART_LCR); au_sync();
+		au_writel(sleep_uart0_clkdiv, UART0_ADDR + UART_CLK); au_sync();
+	}
+
+	restore_au1xxx_intctl();
+	wakeup_counter0_adjust();
+}
+
+unsigned long suspend_mode;
+
+void wakeup_from_suspend(void)
+{
+	suspend_mode = 0;
+}
+
+int au_sleep(void)
+{
+	unsigned long wakeup, flags;
+	extern void save_and_sleep(void);
+
+	spin_lock_irqsave(&pm_lock, flags);
+
+	save_core_regs();
+
+	flush_cache_all();
+
+	/**
+	 ** The code below is all system dependent and we should probably
+	 ** have a function call out of here to set this up.  You need
+	 ** to configure the GPIO or timer interrupts that will bring
+	 ** you out of sleep.
+	 ** For testing, the TOY counter wakeup is useful.
+	 **/
+#if 0
+	au_writel(au_readl(SYS_PINSTATERD) & ~(1 << 11), SYS_PINSTATERD);
+
+	/* GPIO 6 can cause a wake up event */
+	wakeup = au_readl(SYS_WAKEMSK);
+	wakeup &= ~(1 << 8);	/* turn off match20 wakeup */
+	wakeup |= 1 << 6;	/* turn on  GPIO  6 wakeup */
+#else
+	/* For testing, allow match20 to wake us up. */
+#ifdef SLEEP_TEST_TIMEOUT
+	wakeup_counter0_set(sleep_ticks);
+#endif
+	wakeup = 1 << 8;	/* turn on match20 wakeup   */
+	wakeup = 0;
+#endif
+	au_writel(1, SYS_WAKESRC);	/* clear cause */
+	au_sync();
+	au_writel(wakeup, SYS_WAKEMSK);
+	au_sync();
+
+	save_and_sleep();
+
+	/*
+	 * After a wakeup, the cpu vectors back to 0x1fc00000, so
+	 * it's up to the boot code to get us back here.
+	 */
+	restore_core_regs();
+	spin_unlock_irqrestore(&pm_lock, flags);
+	return 0;
+}
+
+static int pm_do_sleep(ctl_table *ctl, int write, struct file *file,
+		       void __user *buffer, size_t *len, loff_t *ppos)
+{
+#ifdef SLEEP_TEST_TIMEOUT
+#define TMPBUFLEN2 16
+	char buf[TMPBUFLEN2], *p;
+#endif
+
+	if (!write)
+		*len = 0;
+	else {
+#ifdef SLEEP_TEST_TIMEOUT
+		if (*len > TMPBUFLEN2 - 1)
+			return -EFAULT;
+		if (copy_from_user(buf, buffer, *len))
+			return -EFAULT;
+		buf[*len] = 0;
+		p = buf;
+		sleep_ticks = simple_strtoul(p, &p, 0);
+#endif
+
+		au_sleep();
+	}
+	return 0;
+}
+
+static int pm_do_freq(ctl_table *ctl, int write, struct file *file,
+		      void __user *buffer, size_t *len, loff_t *ppos)
+{
+	int retval = 0, i;
+	unsigned long val, pll;
+#define TMPBUFLEN 64
+#define MAX_CPU_FREQ 396
+	char buf[TMPBUFLEN], *p;
+	unsigned long flags, intc0_mask, intc1_mask;
+	unsigned long old_baud_base, old_cpu_freq, old_clk, old_refresh;
+	unsigned long new_baud_base, new_cpu_freq, new_clk, new_refresh;
+	unsigned long baud_rate;
+
+	spin_lock_irqsave(&pm_lock, flags);
+	if (!write)
+		*len = 0;
+	else {
+		/* Parse the new frequency */
+		if (*len > TMPBUFLEN - 1) {
+			spin_unlock_irqrestore(&pm_lock, flags);
+			return -EFAULT;
+		}
+		if (copy_from_user(buf, buffer, *len)) {
+			spin_unlock_irqrestore(&pm_lock, flags);
+			return -EFAULT;
+		}
+		buf[*len] = 0;
+		p = buf;
+		val = simple_strtoul(p, &p, 0);
+		if (val > MAX_CPU_FREQ) {
+			spin_unlock_irqrestore(&pm_lock, flags);
+			return -EFAULT;
+		}
+
+		pll = val / 12;
+		if ((pll > 33) || (pll < 7)) {	/* 396 MHz max, 84 MHz min */
+			/* Revisit this for higher speed CPUs */
+			spin_unlock_irqrestore(&pm_lock, flags);
+			return -EFAULT;
+		}
+
+		old_baud_base = get_au1x00_uart_baud_base();
+		old_cpu_freq = get_au1x00_speed();
+
+		new_cpu_freq = pll * 12 * 1000000;
+	        new_baud_base = (new_cpu_freq / (2 * ((int)(au_readl(SYS_POWERCTRL)
+							    & 0x03) + 2) * 16));
+		set_au1x00_speed(new_cpu_freq);
+		set_au1x00_uart_baud_base(new_baud_base);
+
+		old_refresh = au_readl(MEM_SDREFCFG) & 0x1ffffff;
+		new_refresh = ((old_refresh * new_cpu_freq) / old_cpu_freq) |
+			      (au_readl(MEM_SDREFCFG) & ~0x1ffffff);
+
+		au_writel(pll, SYS_CPUPLL);
+		au_sync_delay(1);
+		au_writel(new_refresh, MEM_SDREFCFG);
+		au_sync_delay(1);
+
+		for (i = 0; i < 4; i++)
+			if (au_readl(UART_BASE + UART_MOD_CNTRL +
+				     i * 0x00100000) == 3) {
+				old_clk = au_readl(UART_BASE + UART_CLK +
+						   i * 0x00100000);
+				baud_rate = old_baud_base / old_clk;
+				/*
+				 * We won't get an exact baud rate and the error
+				 * could be significant enough that our new
+				 * calculation will result in a clock that will
+				 * give us a baud rate that's too far off from
+				 * what we really want.
+				 */
+				if (baud_rate > 100000)
+					baud_rate = 115200;
+				else if (baud_rate > 50000)
+					baud_rate = 57600;
+				else if (baud_rate > 30000)
+					baud_rate = 38400;
+				else if (baud_rate > 17000)
+					baud_rate = 19200;
+				else
+					baud_rate = 9600;
+				new_clk = new_baud_base / baud_rate;
+				au_writel(new_clk, UART_BASE + UART_CLK +
+					  i * 0x00100000);
+				au_sync_delay(10);
+			}
+	}
+
+	/*
+	 * We don't want _any_ interrupts other than match20. Otherwise our
+	 * au1000_calibrate_delay() calculation will be off, potentially a lot.
+	 */
+	intc0_mask = save_local_and_disable(0);
+	intc1_mask = save_local_and_disable(1);
+	local_enable_irq(AU1000_TOY_MATCH2_INT);
+	spin_unlock_irqrestore(&pm_lock, flags);
+	au1000_calibrate_delay();
+	restore_local_and_enable(0, intc0_mask);
+	restore_local_and_enable(1, intc1_mask);
+
+	return retval;
+}
+
+
+static struct ctl_table pm_table[] = {
+	{
+		.ctl_name	= CTL_UNNUMBERED,
+		.procname	= "sleep",
+		.data		= NULL,
+		.maxlen		= 0,
+		.mode		= 0600,
+		.proc_handler	= &pm_do_sleep
+	},
+	{
+		.ctl_name	= CTL_UNNUMBERED,
+		.procname	= "freq",
+		.data		= NULL,
+		.maxlen		= 0,
+		.mode		= 0600,
+		.proc_handler	= &pm_do_freq
+	},
+	{}
+};
+
+static struct ctl_table pm_dir_table[] = {
+	{
+		.ctl_name	= CTL_UNNUMBERED,
+		.procname	= "pm",
+		.mode		= 0555,
+		.child		= pm_table
+	},
+	{}
+};
+
+/*
+ * Initialize power interface
+ */
+static int __init pm_init(void)
+{
+	register_sysctl_table(pm_dir_table);
+	return 0;
+}
+
+__initcall(pm_init);
+
+/*
+ * This is right out of init/main.c
+ */
+
+/*
+ * This is the number of bits of precision for the loops_per_jiffy.
+ * Each bit takes on average 1.5/HZ seconds.  This (like the original)
+ * is a little better than 1%.
+ */
+#define LPS_PREC 8
+
+static void au1000_calibrate_delay(void)
+{
+	unsigned long ticks, loopbit;
+	int lps_precision = LPS_PREC;
+
+	loops_per_jiffy = 1 << 12;
+
+	while (loops_per_jiffy <<= 1) {
+		/* Wait for "start of" clock tick */
+		ticks = jiffies;
+		while (ticks == jiffies)
+			/* nothing */ ;
+		/* Go ... */
+		ticks = jiffies;
+		__delay(loops_per_jiffy);
+		ticks = jiffies - ticks;
+		if (ticks)
+			break;
+	}
+
+	/*
+	 * Do a binary approximation to get loops_per_jiffy set to be equal
+	 * one clock (up to lps_precision bits)
+	 */
+	loops_per_jiffy >>= 1;
+	loopbit = loops_per_jiffy;
+	while (lps_precision-- && (loopbit >>= 1)) {
+		loops_per_jiffy |= loopbit;
+		ticks = jiffies;
+		while (ticks == jiffies);
+		ticks = jiffies;
+		__delay(loops_per_jiffy);
+		if (jiffies != ticks)	/* longer than 1 tick */
+			loops_per_jiffy &= ~loopbit;
+	}
+}
+#endif	/* CONFIG_PM */
diff --git a/arch/mips/alchemy/common/prom.c b/arch/mips/alchemy/common/prom.c
new file mode 100644
index 00000000000..18b310b475c
--- /dev/null
+++ b/arch/mips/alchemy/common/prom.c
@@ -0,0 +1,146 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ *    PROM library initialisation code, supports YAMON and U-Boot.
+ *
+ * Copyright 2000-2001, 2006, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ * This file was derived from Carsten Langgaard's
+ * arch/mips/mips-boards/xx files.
+ *
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <asm/bootinfo.h>
+
+int prom_argc;
+char **prom_argv;
+char **prom_envp;
+
+char * __init_or_module prom_getcmdline(void)
+{
+	return &(arcs_cmdline[0]);
+}
+
+void prom_init_cmdline(void)
+{
+	char *cp;
+	int actr;
+
+	actr = 1; /* Always ignore argv[0] */
+
+	cp = &(arcs_cmdline[0]);
+	while (actr < prom_argc) {
+		strcpy(cp, prom_argv[actr]);
+		cp += strlen(prom_argv[actr]);
+		*cp++ = ' ';
+		actr++;
+	}
+	if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */
+		--cp;
+	if (prom_argc > 1)
+		*cp = '\0';
+}
+
+char *prom_getenv(char *envname)
+{
+	/*
+	 * Return a pointer to the given environment variable.
+	 * YAMON uses "name", "value" pairs, while U-Boot uses "name=value".
+	 */
+
+	char **env = prom_envp;
+	int i = strlen(envname);
+	int yamon = (*env && strchr(*env, '=') == NULL);
+
+	while (*env) {
+		if (yamon) {
+			if (strcmp(envname, *env++) == 0)
+				return *env;
+		} else if (strncmp(envname, *env, i) == 0 && (*env)[i] == '=')
+			return *env + i + 1;
+		env++;
+	}
+
+	return NULL;
+}
+
+static inline unsigned char str2hexnum(unsigned char c)
+{
+	if (c >= '0' && c <= '9')
+		return c - '0';
+	if (c >= 'a' && c <= 'f')
+		return c - 'a' + 10;
+	if (c >= 'A' && c <= 'F')
+		return c - 'A' + 10;
+
+	return 0; /* foo */
+}
+
+static inline void str2eaddr(unsigned char *ea, unsigned char *str)
+{
+	int i;
+
+	for (i = 0; i < 6; i++) {
+		unsigned char num;
+
+		if ((*str == '.') || (*str == ':'))
+			str++;
+		num  = str2hexnum(*str++) << 4;
+		num |= str2hexnum(*str++);
+		ea[i] = num;
+	}
+}
+
+int prom_get_ethernet_addr(char *ethernet_addr)
+{
+	char *ethaddr_str;
+	char *argptr;
+
+	/* Check the environment variables first */
+	ethaddr_str = prom_getenv("ethaddr");
+	if (!ethaddr_str) {
+		/* Check command line */
+		argptr = prom_getcmdline();
+		ethaddr_str = strstr(argptr, "ethaddr=");
+		if (!ethaddr_str)
+			return -1;
+
+		ethaddr_str += strlen("ethaddr=");
+	}
+
+	str2eaddr(ethernet_addr, ethaddr_str);
+
+	return 0;
+}
+EXPORT_SYMBOL(prom_get_ethernet_addr);
+
+void __init prom_free_prom_memory(void)
+{
+}
diff --git a/arch/mips/alchemy/common/puts.c b/arch/mips/alchemy/common/puts.c
new file mode 100644
index 00000000000..55bbe24d45b
--- /dev/null
+++ b/arch/mips/alchemy/common/puts.c
@@ -0,0 +1,68 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ *	Low level UART routines to directly access Alchemy UART.
+ *
+ * Copyright 2001, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <asm/mach-au1x00/au1000.h>
+
+#define SERIAL_BASE   UART_BASE
+#define SER_CMD       0x7
+#define SER_DATA      0x1
+#define TX_BUSY       0x20
+
+#define TIMEOUT       0xffffff
+#define SLOW_DOWN
+
+static volatile unsigned long * const com1 = (unsigned long *)SERIAL_BASE;
+
+#ifdef SLOW_DOWN
+static inline void slow_down(void)
+{
+	int k;
+
+	for (k = 0; k < 10000; k++);
+}
+#else
+#define slow_down()
+#endif
+
+void
+prom_putchar(const unsigned char c)
+{
+	unsigned char ch;
+	int i = 0;
+
+	do {
+		ch = com1[SER_CMD];
+		slow_down();
+		i++;
+		if (i > TIMEOUT)
+			break;
+	} while (0 == (ch & TX_BUSY));
+
+	com1[SER_DATA] = c;
+}
diff --git a/arch/mips/alchemy/common/reset.c b/arch/mips/alchemy/common/reset.c
new file mode 100644
index 00000000000..d555429c8d6
--- /dev/null
+++ b/arch/mips/alchemy/common/reset.c
@@ -0,0 +1,189 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ *	Au1xx0 reset routines.
+ *
+ * Copyright 2001, 2006, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <asm/cacheflush.h>
+
+#include <asm/mach-au1x00/au1000.h>
+
+extern int au_sleep(void);
+
+void au1000_restart(char *command)
+{
+	/* Set all integrated peripherals to disabled states */
+	extern void board_reset(void);
+	u32 prid = read_c0_prid();
+
+	printk(KERN_NOTICE "\n** Resetting Integrated Peripherals\n");
+
+	switch (prid & 0xFF000000) {
+	case 0x00000000: /* Au1000 */
+		au_writel(0x02, 0xb0000010); /* ac97_enable */
+		au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
+		asm("sync");
+		au_writel(0x00, 0xb017fffc); /* usbh_enable */
+		au_writel(0x00, 0xb0200058); /* usbd_enable */
+		au_writel(0x00, 0xb0300040); /* ir_enable */
+		au_writel(0x00, 0xb4004104); /* mac dma */
+		au_writel(0x00, 0xb4004114); /* mac dma */
+		au_writel(0x00, 0xb4004124); /* mac dma */
+		au_writel(0x00, 0xb4004134); /* mac dma */
+		au_writel(0x00, 0xb0520000); /* macen0 */
+		au_writel(0x00, 0xb0520004); /* macen1 */
+		au_writel(0x00, 0xb1000008); /* i2s_enable  */
+		au_writel(0x00, 0xb1100100); /* uart0_enable */
+		au_writel(0x00, 0xb1200100); /* uart1_enable */
+		au_writel(0x00, 0xb1300100); /* uart2_enable */
+		au_writel(0x00, 0xb1400100); /* uart3_enable */
+		au_writel(0x02, 0xb1600100); /* ssi0_enable */
+		au_writel(0x02, 0xb1680100); /* ssi1_enable */
+		au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
+		au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
+		au_writel(0x00, 0xb1900028); /* sys_clksrc */
+		au_writel(0x10, 0xb1900060); /* sys_cpupll */
+		au_writel(0x00, 0xb1900064); /* sys_auxpll */
+		au_writel(0x00, 0xb1900100); /* sys_pininputen */
+		break;
+	case 0x01000000: /* Au1500 */
+		au_writel(0x02, 0xb0000010); /* ac97_enable */
+		au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
+		asm("sync");
+		au_writel(0x00, 0xb017fffc); /* usbh_enable */
+		au_writel(0x00, 0xb0200058); /* usbd_enable */
+		au_writel(0x00, 0xb4004104); /* mac dma */
+		au_writel(0x00, 0xb4004114); /* mac dma */
+		au_writel(0x00, 0xb4004124); /* mac dma */
+		au_writel(0x00, 0xb4004134); /* mac dma */
+		au_writel(0x00, 0xb1520000); /* macen0 */
+		au_writel(0x00, 0xb1520004); /* macen1 */
+		au_writel(0x00, 0xb1100100); /* uart0_enable */
+		au_writel(0x00, 0xb1400100); /* uart3_enable */
+		au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
+		au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
+		au_writel(0x00, 0xb1900028); /* sys_clksrc */
+		au_writel(0x10, 0xb1900060); /* sys_cpupll */
+		au_writel(0x00, 0xb1900064); /* sys_auxpll */
+		au_writel(0x00, 0xb1900100); /* sys_pininputen */
+		break;
+	case 0x02000000: /* Au1100 */
+		au_writel(0x02, 0xb0000010); /* ac97_enable */
+		au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
+		asm("sync");
+		au_writel(0x00, 0xb017fffc); /* usbh_enable */
+		au_writel(0x00, 0xb0200058); /* usbd_enable */
+		au_writel(0x00, 0xb0300040); /* ir_enable */
+		au_writel(0x00, 0xb4004104); /* mac dma */
+		au_writel(0x00, 0xb4004114); /* mac dma */
+		au_writel(0x00, 0xb4004124); /* mac dma */
+		au_writel(0x00, 0xb4004134); /* mac dma */
+		au_writel(0x00, 0xb0520000); /* macen0 */
+		au_writel(0x00, 0xb1000008); /* i2s_enable  */
+		au_writel(0x00, 0xb1100100); /* uart0_enable */
+		au_writel(0x00, 0xb1200100); /* uart1_enable */
+		au_writel(0x00, 0xb1400100); /* uart3_enable */
+		au_writel(0x02, 0xb1600100); /* ssi0_enable */
+		au_writel(0x02, 0xb1680100); /* ssi1_enable */
+		au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
+		au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
+		au_writel(0x00, 0xb1900028); /* sys_clksrc */
+		au_writel(0x10, 0xb1900060); /* sys_cpupll */
+		au_writel(0x00, 0xb1900064); /* sys_auxpll */
+		au_writel(0x00, 0xb1900100); /* sys_pininputen */
+		break;
+	case 0x03000000: /* Au1550 */
+		au_writel(0x00, 0xb1a00004); /* psc 0 */
+		au_writel(0x00, 0xb1b00004); /* psc 1 */
+		au_writel(0x00, 0xb0a00004); /* psc 2 */
+		au_writel(0x00, 0xb0b00004); /* psc 3 */
+		au_writel(0x00, 0xb017fffc); /* usbh_enable */
+		au_writel(0x00, 0xb0200058); /* usbd_enable */
+		au_writel(0x00, 0xb4004104); /* mac dma */
+		au_writel(0x00, 0xb4004114); /* mac dma */
+		au_writel(0x00, 0xb4004124); /* mac dma */
+		au_writel(0x00, 0xb4004134); /* mac dma */
+		au_writel(0x00, 0xb1520000); /* macen0 */
+		au_writel(0x00, 0xb1520004); /* macen1 */
+		au_writel(0x00, 0xb1100100); /* uart0_enable */
+		au_writel(0x00, 0xb1200100); /* uart1_enable */
+		au_writel(0x00, 0xb1400100); /* uart3_enable */
+		au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
+		au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
+		au_writel(0x00, 0xb1900028); /* sys_clksrc */
+		au_writel(0x10, 0xb1900060); /* sys_cpupll */
+		au_writel(0x00, 0xb1900064); /* sys_auxpll */
+		au_writel(0x00, 0xb1900100); /* sys_pininputen */
+		break;
+	}
+
+	set_c0_status(ST0_BEV | ST0_ERL);
+	change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
+	flush_cache_all();
+	write_c0_wired(0);
+
+	/* Give board a chance to do a hardware reset */
+	board_reset();
+
+	/* Jump to the beggining in case board_reset() is empty */
+	__asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
+}
+
+void au1000_halt(void)
+{
+#if defined(CONFIG_MIPS_PB1550) || defined(CONFIG_MIPS_DB1550)
+	/* Power off system */
+	printk(KERN_NOTICE "\n** Powering off...\n");
+	au_writew(au_readw(0xAF00001C) | (3 << 14), 0xAF00001C);
+	au_sync();
+	while (1); /* should not get here */
+#else
+	printk(KERN_NOTICE "\n** You can safely turn off the power\n");
+#ifdef CONFIG_MIPS_MIRAGE
+	au_writel((1 << 26) | (1 << 10), GPIO2_OUTPUT);
+#endif
+#ifdef CONFIG_MIPS_DB1200
+	au_writew(au_readw(0xB980001C) | (1 << 14), 0xB980001C);
+#endif
+#ifdef CONFIG_PM
+	au_sleep();
+
+	/* Should not get here */
+	printk(KERN_ERR "Unable to put CPU in sleep mode\n");
+	while (1);
+#else
+	while (1)
+		__asm__(".set\tmips3\n\t"
+	                "wait\n\t"
+			".set\tmips0");
+#endif
+#endif /* defined(CONFIG_MIPS_PB1550) || defined(CONFIG_MIPS_DB1550) */
+}
+
+void au1000_power_off(void)
+{
+	au1000_halt();
+}
diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c
new file mode 100644
index 00000000000..1ac6b06f42a
--- /dev/null
+++ b/arch/mips/alchemy/common/setup.c
@@ -0,0 +1,160 @@
+/*
+ * Copyright 2000, 2007-2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com
+ *
+ * Updates to 2.6, Pete Popov, Embedded Alley Solutions, Inc.
+ *
+ *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+
+#include <asm/mipsregs.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+
+#include <au1000.h>
+#include <prom.h>
+
+extern void __init board_setup(void);
+extern void au1000_restart(char *);
+extern void au1000_halt(void);
+extern void au1000_power_off(void);
+extern void set_cpuspec(void);
+
+void __init plat_mem_setup(void)
+{
+	struct	cpu_spec *sp;
+	char *argptr;
+	unsigned long prid, cpufreq, bclk;
+
+	set_cpuspec();
+	sp = cur_cpu_spec[0];
+
+	board_setup();  /* board specific setup */
+
+	prid = read_c0_prid();
+	if (sp->cpu_pll_wo)
+#ifdef CONFIG_SOC_AU1000_FREQUENCY
+		cpufreq = CONFIG_SOC_AU1000_FREQUENCY / 1000000;
+#else
+		cpufreq = 396;
+#endif
+	else
+		cpufreq = (au_readl(SYS_CPUPLL) & 0x3F) * 12;
+	printk(KERN_INFO "(PRID %08lx) @ %ld MHz\n", prid, cpufreq);
+
+	if (sp->cpu_bclk) {
+		/* Enable BCLK switching */
+		bclk = au_readl(SYS_POWERCTRL);
+		au_writel(bclk | 0x60, SYS_POWERCTRL);
+		printk(KERN_INFO "BCLK switching enabled!\n");
+	}
+
+	if (sp->cpu_od)
+		/* Various early Au1xx0 errata corrected by this */
+		set_c0_config(1 << 19); /* Set Config[OD] */
+	else
+		/* Clear to obtain best system bus performance */
+		clear_c0_config(1 << 19); /* Clear Config[OD] */
+
+	argptr = prom_getcmdline();
+
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+	argptr = strstr(argptr, "console=");
+	if (argptr == NULL) {
+		argptr = prom_getcmdline();
+		strcat(argptr, " console=ttyS0,115200");
+	}
+#endif
+
+#ifdef CONFIG_FB_AU1100
+	argptr = strstr(argptr, "video=");
+	if (argptr == NULL) {
+		argptr = prom_getcmdline();
+		/* default panel */
+		/*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/
+	}
+#endif
+
+#if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000)
+	/* au1000 does not support vra, au1500 and au1100 do */
+	strcat(argptr, " au1000_audio=vra");
+	argptr = prom_getcmdline();
+#endif
+	_machine_restart = au1000_restart;
+	_machine_halt = au1000_halt;
+	pm_power_off = au1000_power_off;
+
+	/* IO/MEM resources. */
+	set_io_port_base(0);
+	ioport_resource.start = IOPORT_RESOURCE_START;
+	ioport_resource.end = IOPORT_RESOURCE_END;
+	iomem_resource.start = IOMEM_RESOURCE_START;
+	iomem_resource.end = IOMEM_RESOURCE_END;
+
+	while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_E0S);
+	au_writel(SYS_CNTRL_E0 | SYS_CNTRL_EN0, SYS_COUNTER_CNTRL);
+	au_sync();
+	while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S);
+	au_writel(0, SYS_TOYTRIM);
+}
+
+#if defined(CONFIG_64BIT_PHYS_ADDR)
+/* This routine should be valid for all Au1x based boards */
+phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size)
+{
+	/* Don't fixup 36-bit addresses */
+	if ((phys_addr >> 32) != 0)
+		return phys_addr;
+
+#ifdef CONFIG_PCI
+	{
+		u32 start = (u32)Au1500_PCI_MEM_START;
+		u32 end   = (u32)Au1500_PCI_MEM_END;
+
+		/* Check for PCI memory window */
+		if (phys_addr >= start && (phys_addr + size - 1) <= end)
+			return (phys_t)
+			       ((phys_addr - start) + Au1500_PCI_MEM_START);
+	}
+#endif
+
+	/*
+	 * All Au1xx0 SOCs have a PCMCIA controller.
+	 * We setup our 32-bit pseudo addresses to be equal to the
+	 * 36-bit addr >> 4, to make it easier to check the address
+	 * and fix it.
+	 * The PCMCIA socket 0 physical attribute address is 0xF 4000 0000.
+	 * The pseudo address we use is 0xF400 0000. Any address over
+	 * 0xF400 0000 is a PCMCIA pseudo address.
+	 */
+	if ((phys_addr >= 0xF4000000) && (phys_addr < 0xFFFFFFFF))
+		return (phys_t)(phys_addr << 4);
+
+	/* default nop */
+	return phys_addr;
+}
+EXPORT_SYMBOL(__fixup_bigphys_addr);
+#endif
diff --git a/arch/mips/alchemy/common/sleeper.S b/arch/mips/alchemy/common/sleeper.S
new file mode 100644
index 00000000000..3006e270c8b
--- /dev/null
+++ b/arch/mips/alchemy/common/sleeper.S
@@ -0,0 +1,154 @@
+/*
+ * Copyright 2002 Embedded Edge, LLC
+ * Author: dan@embeddededge.com
+ *
+ * Sleep helper for Au1xxx sleep mode.
+ *
+ * This program is free software; you can redistribute	it and/or modify it
+ * under  the terms of	the GNU General	 Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+
+	.text
+	.set	macro
+	.set	noat
+	.align	5
+
+/* Save all of the processor general registers and go to sleep.
+ * A wakeup condition will get us back here to restore the registers.
+ */
+LEAF(save_and_sleep)
+
+	subu	sp, PT_SIZE
+	sw	$1, PT_R1(sp)
+	sw	$2, PT_R2(sp)
+	sw	$3, PT_R3(sp)
+	sw	$4, PT_R4(sp)
+	sw	$5, PT_R5(sp)
+	sw	$6, PT_R6(sp)
+	sw	$7, PT_R7(sp)
+	sw	$8, PT_R8(sp)
+	sw	$9, PT_R9(sp)
+	sw	$10, PT_R10(sp)
+	sw	$11, PT_R11(sp)
+	sw	$12, PT_R12(sp)
+	sw	$13, PT_R13(sp)
+	sw	$14, PT_R14(sp)
+	sw	$15, PT_R15(sp)
+	sw	$16, PT_R16(sp)
+	sw	$17, PT_R17(sp)
+	sw	$18, PT_R18(sp)
+	sw	$19, PT_R19(sp)
+	sw	$20, PT_R20(sp)
+	sw	$21, PT_R21(sp)
+	sw	$22, PT_R22(sp)
+	sw	$23, PT_R23(sp)
+	sw	$24, PT_R24(sp)
+	sw	$25, PT_R25(sp)
+	sw	$26, PT_R26(sp)
+	sw	$27, PT_R27(sp)
+	sw	$28, PT_R28(sp)
+	sw	$29, PT_R29(sp)
+	sw	$30, PT_R30(sp)
+	sw	$31, PT_R31(sp)
+	mfc0	k0, CP0_STATUS
+	sw	k0, 0x20(sp)
+	mfc0	k0, CP0_CONTEXT
+	sw	k0, 0x1c(sp)
+	mfc0	k0, CP0_PAGEMASK
+	sw	k0, 0x18(sp)
+	mfc0	k0, CP0_CONFIG
+	sw	k0, 0x14(sp)
+
+	/* Now set up the scratch registers so the boot rom will
+	 * return to this point upon wakeup.
+	 */
+	la	k0, 1f
+	lui	k1, 0xb190
+	ori	k1, 0x18
+	sw	sp, 0(k1)
+	ori 	k1, 0x1c
+	sw	k0, 0(k1)
+
+/* Put SDRAM into self refresh.  Preload instructions into cache,
+ * issue a precharge, then auto refresh, then sleep commands to it.
+ */
+	la	t0, sdsleep
+	.set	mips3
+	cache	0x14, 0(t0)
+	cache	0x14, 32(t0)
+	cache	0x14, 64(t0)
+	cache	0x14, 96(t0)
+	.set	mips0
+
+sdsleep:
+	lui 	k0, 0xb400
+	sw	zero, 0x001c(k0)	/* Precharge */
+	sw	zero, 0x0020(k0)	/* Auto refresh */
+	sw	zero, 0x0030(k0)	/* SDRAM sleep */
+	sync
+
+	lui 	k1, 0xb190
+	sw	zero, 0x0078(k1)	/* get ready  to sleep */
+	sync
+	sw	zero, 0x007c(k1)	/* Put processor to sleep */
+	sync
+
+	/* This is where we return upon wakeup.
+	 * Reload all of the registers and return.
+	 */
+1:	nop
+	lw	k0, 0x20(sp)
+	mtc0	k0, CP0_STATUS
+	lw	k0, 0x1c(sp)
+	mtc0	k0, CP0_CONTEXT
+	lw	k0, 0x18(sp)
+	mtc0	k0, CP0_PAGEMASK
+	lw	k0, 0x14(sp)
+	mtc0	k0, CP0_CONFIG
+
+	/* We need to catch the ealry Alchemy SOCs with
+	 * the write-only Config[OD] bit and set it back to one...
+	 */
+	jal	au1x00_fixup_config_od
+	lw	$1, PT_R1(sp)
+	lw	$2, PT_R2(sp)
+	lw	$3, PT_R3(sp)
+	lw	$4, PT_R4(sp)
+	lw	$5, PT_R5(sp)
+	lw	$6, PT_R6(sp)
+	lw	$7, PT_R7(sp)
+	lw	$8, PT_R8(sp)
+	lw	$9, PT_R9(sp)
+	lw	$10, PT_R10(sp)
+	lw	$11, PT_R11(sp)
+	lw	$12, PT_R12(sp)
+	lw	$13, PT_R13(sp)
+	lw	$14, PT_R14(sp)
+	lw	$15, PT_R15(sp)
+	lw	$16, PT_R16(sp)
+	lw	$17, PT_R17(sp)
+	lw	$18, PT_R18(sp)
+	lw	$19, PT_R19(sp)
+	lw	$20, PT_R20(sp)
+	lw	$21, PT_R21(sp)
+	lw	$22, PT_R22(sp)
+	lw	$23, PT_R23(sp)
+	lw	$24, PT_R24(sp)
+	lw	$25, PT_R25(sp)
+	lw	$26, PT_R26(sp)
+	lw	$27, PT_R27(sp)
+	lw	$28, PT_R28(sp)
+	lw	$29, PT_R29(sp)
+	lw	$30, PT_R30(sp)
+	lw	$31, PT_R31(sp)
+	addiu	sp, PT_SIZE
+
+	jr	ra
+END(save_and_sleep)
diff --git a/arch/mips/alchemy/common/time.c b/arch/mips/alchemy/common/time.c
new file mode 100644
index 00000000000..563d9390a87
--- /dev/null
+++ b/arch/mips/alchemy/common/time.c
@@ -0,0 +1,266 @@
+/*
+ *
+ * Copyright (C) 2001, 2006, 2008 MontaVista Software, <source@mvista.com>
+ * Copied and modified Carsten Langgaard's time.c
+ *
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ * ########################################################################
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ *
+ * ########################################################################
+ *
+ * Setting up the clock on the MIPS boards.
+ *
+ * We provide the clock interrupt processing and the timer offset compute
+ * functions.  If CONFIG_PM is selected, we also ensure the 32KHz timer is
+ * available.  -- Dan
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+
+#include <asm/mipsregs.h>
+#include <asm/time.h>
+#include <asm/mach-au1x00/au1000.h>
+
+static int no_au1xxx_32khz;
+extern int allow_au1k_wait; /* default off for CP0 Counter */
+
+#ifdef CONFIG_PM
+#if HZ < 100 || HZ > 1000
+#error "unsupported HZ value! Must be in [100,1000]"
+#endif
+#define MATCH20_INC (328 * 100 / HZ) /* magic number 328 is for HZ=100... */
+static unsigned long last_pc0, last_match20;
+#endif
+
+static DEFINE_SPINLOCK(time_lock);
+
+unsigned long wtimer;
+
+#ifdef CONFIG_PM
+static irqreturn_t counter0_irq(int irq, void *dev_id)
+{
+	unsigned long pc0;
+	int time_elapsed;
+	static int jiffie_drift;
+
+	if (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_M20) {
+		/* should never happen! */
+		printk(KERN_WARNING "counter 0 w status error\n");
+		return IRQ_NONE;
+	}
+
+	pc0 = au_readl(SYS_TOYREAD);
+	if (pc0 < last_match20)
+		/* counter overflowed */
+		time_elapsed = (0xffffffff - last_match20) + pc0;
+	else
+		time_elapsed = pc0 - last_match20;
+
+	while (time_elapsed > 0) {
+		do_timer(1);
+#ifndef CONFIG_SMP
+		update_process_times(user_mode(get_irq_regs()));
+#endif
+		time_elapsed -= MATCH20_INC;
+		last_match20 += MATCH20_INC;
+		jiffie_drift++;
+	}
+
+	last_pc0 = pc0;
+	au_writel(last_match20 + MATCH20_INC, SYS_TOYMATCH2);
+	au_sync();
+
+	/*
+	 * Our counter ticks at 10.009765625 ms/tick, we we're running
+	 * almost 10 uS too slow per tick.
+	 */
+
+	if (jiffie_drift >= 999) {
+		jiffie_drift -= 999;
+		do_timer(1); /* increment jiffies by one */
+#ifndef CONFIG_SMP
+		update_process_times(user_mode(get_irq_regs()));
+#endif
+	}
+
+	return IRQ_HANDLED;
+}
+
+struct irqaction counter0_action = {
+	.handler	= counter0_irq,
+	.flags		= IRQF_DISABLED,
+	.name		= "alchemy-toy",
+	.dev_id		= NULL,
+};
+
+/* When we wakeup from sleep, we have to "catch up" on all of the
+ * timer ticks we have missed.
+ */
+void wakeup_counter0_adjust(void)
+{
+	unsigned long pc0;
+	int time_elapsed;
+
+	pc0 = au_readl(SYS_TOYREAD);
+	if (pc0 < last_match20)
+		/* counter overflowed */
+		time_elapsed = (0xffffffff - last_match20) + pc0;
+	else
+		time_elapsed = pc0 - last_match20;
+
+	while (time_elapsed > 0) {
+		time_elapsed -= MATCH20_INC;
+		last_match20 += MATCH20_INC;
+	}
+
+	last_pc0 = pc0;
+	au_writel(last_match20 + MATCH20_INC, SYS_TOYMATCH2);
+	au_sync();
+
+}
+
+/* This is just for debugging to set the timer for a sleep delay. */
+void wakeup_counter0_set(int ticks)
+{
+	unsigned long pc0;
+
+	pc0 = au_readl(SYS_TOYREAD);
+	last_pc0 = pc0;
+	au_writel(last_match20 + (MATCH20_INC * ticks), SYS_TOYMATCH2);
+	au_sync();
+}
+#endif
+
+/*
+ * I haven't found anyone that doesn't use a 12 MHz source clock,
+ * but just in case.....
+ */
+#define AU1000_SRC_CLK	12000000
+
+/*
+ * We read the real processor speed from the PLL.  This is important
+ * because it is more accurate than computing it from the 32 KHz
+ * counter, if it exists.  If we don't have an accurate processor
+ * speed, all of the peripherals that derive their clocks based on
+ * this advertised speed will introduce error and sometimes not work
+ * properly.  This function is futher convoluted to still allow configurations
+ * to do that in case they have really, really old silicon with a
+ * write-only PLL register, that we need the 32 KHz when power management
+ * "wait" is enabled, and we need to detect if the 32 KHz isn't present
+ * but requested......got it? :-)		-- Dan
+ */
+unsigned long calc_clock(void)
+{
+	unsigned long cpu_speed;
+	unsigned long flags;
+	unsigned long counter;
+
+	spin_lock_irqsave(&time_lock, flags);
+
+	/* Power management cares if we don't have a 32 KHz counter. */
+	no_au1xxx_32khz = 0;
+	counter = au_readl(SYS_COUNTER_CNTRL);
+	if (counter & SYS_CNTRL_E0) {
+		int trim_divide = 16;
+
+		au_writel(counter | SYS_CNTRL_EN1, SYS_COUNTER_CNTRL);
+
+		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T1S);
+		/* RTC now ticks at 32.768/16 kHz */
+		au_writel(trim_divide - 1, SYS_RTCTRIM);
+		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T1S);
+
+		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C1S);
+		au_writel(0, SYS_TOYWRITE);
+		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C1S);
+	} else
+		no_au1xxx_32khz = 1;
+
+	/*
+	 * On early Au1000, sys_cpupll was write-only. Since these
+	 * silicon versions of Au1000 are not sold by AMD, we don't bend
+	 * over backwards trying to determine the frequency.
+	 */
+	if (cur_cpu_spec[0]->cpu_pll_wo)
+#ifdef CONFIG_SOC_AU1000_FREQUENCY
+		cpu_speed = CONFIG_SOC_AU1000_FREQUENCY;
+#else
+		cpu_speed = 396000000;
+#endif
+	else
+		cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) * AU1000_SRC_CLK;
+	/* On Alchemy CPU:counter ratio is 1:1 */
+	mips_hpt_frequency = cpu_speed;
+	/* Equation: Baudrate = CPU / (SD * 2 * CLKDIV * 16) */
+	set_au1x00_uart_baud_base(cpu_speed / (2 * ((int)(au_readl(SYS_POWERCTRL)
+							  & 0x03) + 2) * 16));
+	spin_unlock_irqrestore(&time_lock, flags);
+	return cpu_speed;
+}
+
+void __init plat_time_init(void)
+{
+	unsigned int est_freq = calc_clock();
+
+	est_freq += 5000;    /* round */
+	est_freq -= est_freq%10000;
+	printk(KERN_INFO "CPU frequency %u.%02u MHz\n",
+	       est_freq / 1000000, ((est_freq % 1000000) * 100) / 1000000);
+	set_au1x00_speed(est_freq);
+	set_au1x00_lcd_clock(); /* program the LCD clock */
+
+#ifdef CONFIG_PM
+	/*
+	 * setup counter 0, since it keeps ticking after a
+	 * 'wait' instruction has been executed. The CP0 timer and
+	 * counter 1 do NOT continue running after 'wait'
+	 *
+	 * It's too early to call request_irq() here, so we handle
+	 * counter 0 interrupt as a special irq and it doesn't show
+	 * up under /proc/interrupts.
+	 *
+	 * Check to ensure we really have a 32 KHz oscillator before
+	 * we do this.
+	 */
+	if (no_au1xxx_32khz)
+		printk(KERN_WARNING "WARNING: no 32KHz clock found.\n");
+	else {
+		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C0S);
+		au_writel(0, SYS_TOYWRITE);
+		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C0S);
+
+		au_writel(au_readl(SYS_WAKEMSK) | (1 << 8), SYS_WAKEMSK);
+		au_writel(~0, SYS_WAKESRC);
+		au_sync();
+		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_M20);
+
+		/* Setup match20 to interrupt once every HZ */
+		last_pc0 = last_match20 = au_readl(SYS_TOYREAD);
+		au_writel(last_match20 + MATCH20_INC, SYS_TOYMATCH2);
+		au_sync();
+		while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_M20);
+		setup_irq(AU1000_TOY_MATCH2_INT, &counter0_action);
+
+		/* We can use the real 'wait' instruction. */
+		allow_au1k_wait = 1;
+	}
+
+#endif
+}