MIPS: Add support for NXP PNX833x (STB222/5) into linux kernel

The following patch add support for the NXP PNX833x SOC.  More
specifically it adds support for the STB222/5 variant. It fixes
the vectored interrupt issue.
Signed-off-by: Ndaniel.j.laird <daniel.j.laird@nxp.com>
Signed-off-by: NJason Wessel <jason.wessel@windriver.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig

@@ -261,6 +261,19 @@ config MACH_VR41XX
 	select SYS_HAS_CPU_VR41XX
 	select GENERIC_HARDIRQS_NO__DO_IRQ
 
+config NXP_STB220
+	bool "NXP STB220 board"
+	select SOC_PNX833X
+	help
+	 Support for NXP Semiconductors STB220 Development Board.
+
+config NXP_STB225
+	bool "NXP 225 board"
+	select SOC_PNX833X
+	select SOC_PNX8335
+	help
+	 Support for NXP Semiconductors STB225 Development Board.
+
 config PNX8550_JBS
 	bool "NXP PNX8550 based JBS board"
 	select PNX8550
@@ -849,6 +862,24 @@ config MIPS_RM9122
 	bool
 	select SERIAL_RM9000
 
+config SOC_PNX833X
+	bool
+	select CEVT_R4K
+	select CSRC_R4K
+	select IRQ_CPU
+	select DMA_NONCOHERENT
+	select SYS_HAS_CPU_MIPS32_R2
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select SYS_SUPPORTS_LITTLE_ENDIAN
+	select SYS_SUPPORTS_BIG_ENDIAN
+	select GENERIC_HARDIRQS_NO__DO_IRQ
+	select GENERIC_GPIO
+	select CPU_MIPSR2_IRQ_VI
+
+config SOC_PNX8335
+	bool
+	select SOC_PNX833X
+
 config PNX8550
 	bool
 	select SOC_PNX8550

arch/mips/Makefile

@@ -381,6 +381,14 @@ load-$(CONFIG_CASIO_E55)	+= 0xffffffff80004000
 #
 load-$(CONFIG_TANBAC_TB022X)	+= 0xffffffff80000000
 
+# NXP STB225
+core-$(CONFIG_SOC_PNX833X)		+= arch/mips/nxp/pnx833x/common/
+cflags-$(CONFIG_SOC_PNX833X)	+= -Iarch/mips/include/asm/mach-pnx833x
+libs-$(CONFIG_NXP_STB220)		+= arch/mips/nxp/pnx833x/stb22x/
+load-$(CONFIG_NXP_STB220)		+= 0xffffffff80001000
+libs-$(CONFIG_NXP_STB225)		+= arch/mips/nxp/pnx833x/stb22x/
+load-$(CONFIG_NXP_STB225)		+= 0xffffffff80001000
+
 #
 # Common NXP PNX8550
 #

arch/mips/include/asm/mach-pnx833x/gpio.h

+/*
+ *  gpio.h: GPIO Support for PNX833X.
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.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 program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef __ASM_MIPS_MACH_PNX833X_GPIO_H
+#define __ASM_MIPS_MACH_PNX833X_GPIO_H
+
+/* BIG FAT WARNING: races danger!
+   No protections exist here. Current users are only early init code,
+   when locking is not needed because no cuncurency yet exists there,
+   and GPIO IRQ dispatcher, which does locking.
+   However, if many uses will ever happen, proper locking will be needed
+   - including locking between different uses
+*/
+
+#include "pnx833x.h"
+
+#define SET_REG_BIT(reg, bit)		do { (reg |= (1 << (bit))); } while (0)
+#define CLEAR_REG_BIT(reg, bit)		do { (reg &= ~(1 << (bit))); } while (0)
+
+/* Initialize GPIO to a known state */
+static inline void pnx833x_gpio_init(void)
+{
+	PNX833X_PIO_DIR = 0;
+	PNX833X_PIO_DIR2 = 0;
+	PNX833X_PIO_SEL = 0;
+	PNX833X_PIO_SEL2 = 0;
+	PNX833X_PIO_INT_EDGE = 0;
+	PNX833X_PIO_INT_HI = 0;
+	PNX833X_PIO_INT_LO = 0;
+
+	/* clear any GPIO interrupt requests */
+	PNX833X_PIO_INT_CLEAR = 0xffff;
+	PNX833X_PIO_INT_CLEAR = 0;
+	PNX833X_PIO_INT_ENABLE = 0;
+}
+
+/* Select GPIO direction for a pin */
+static inline void pnx833x_gpio_select_input(unsigned int pin)
+{
+	if (pin < 32)
+		CLEAR_REG_BIT(PNX833X_PIO_DIR, pin);
+	else
+		CLEAR_REG_BIT(PNX833X_PIO_DIR2, pin & 31);
+}
+static inline void pnx833x_gpio_select_output(unsigned int pin)
+{
+	if (pin < 32)
+		SET_REG_BIT(PNX833X_PIO_DIR, pin);
+	else
+		SET_REG_BIT(PNX833X_PIO_DIR2, pin & 31);
+}
+
+/* Select GPIO or alternate function for a pin */
+static inline void pnx833x_gpio_select_function_io(unsigned int pin)
+{
+	if (pin < 32)
+		CLEAR_REG_BIT(PNX833X_PIO_SEL, pin);
+	else
+		CLEAR_REG_BIT(PNX833X_PIO_SEL2, pin & 31);
+}
+static inline void pnx833x_gpio_select_function_alt(unsigned int pin)
+{
+	if (pin < 32)
+		SET_REG_BIT(PNX833X_PIO_SEL, pin);
+	else
+		SET_REG_BIT(PNX833X_PIO_SEL2, pin & 31);
+}
+
+/* Read GPIO pin */
+static inline int pnx833x_gpio_read(unsigned int pin)
+{
+	if (pin < 32)
+		return (PNX833X_PIO_IN >> pin) & 1;
+	else
+		return (PNX833X_PIO_IN2 >> (pin & 31)) & 1;
+}
+
+/* Write GPIO pin */
+static inline void pnx833x_gpio_write(unsigned int val, unsigned int pin)
+{
+	if (pin < 32) {
+		if (val)
+			SET_REG_BIT(PNX833X_PIO_OUT, pin);
+		else
+			CLEAR_REG_BIT(PNX833X_PIO_OUT, pin);
+	} else {
+		if (val)
+			SET_REG_BIT(PNX833X_PIO_OUT2, pin & 31);
+		else
+			CLEAR_REG_BIT(PNX833X_PIO_OUT2, pin & 31);
+	}
+}
+
+/* Configure GPIO interrupt */
+#define GPIO_INT_NONE		0
+#define GPIO_INT_LEVEL_LOW	1
+#define GPIO_INT_LEVEL_HIGH	2
+#define GPIO_INT_EDGE_RISING	3
+#define GPIO_INT_EDGE_FALLING	4
+#define GPIO_INT_EDGE_BOTH	5
+static inline void pnx833x_gpio_setup_irq(int when, unsigned int pin)
+{
+	switch (when) {
+	case GPIO_INT_LEVEL_LOW:
+		CLEAR_REG_BIT(PNX833X_PIO_INT_EDGE, pin);
+		CLEAR_REG_BIT(PNX833X_PIO_INT_HI, pin);
+		SET_REG_BIT(PNX833X_PIO_INT_LO, pin);
+		break;
+	case GPIO_INT_LEVEL_HIGH:
+		CLEAR_REG_BIT(PNX833X_PIO_INT_EDGE, pin);
+		SET_REG_BIT(PNX833X_PIO_INT_HI, pin);
+		CLEAR_REG_BIT(PNX833X_PIO_INT_LO, pin);
+		break;
+	case GPIO_INT_EDGE_RISING:
+		SET_REG_BIT(PNX833X_PIO_INT_EDGE, pin);
+		SET_REG_BIT(PNX833X_PIO_INT_HI, pin);
+		CLEAR_REG_BIT(PNX833X_PIO_INT_LO, pin);
+		break;
+	case GPIO_INT_EDGE_FALLING:
+		SET_REG_BIT(PNX833X_PIO_INT_EDGE, pin);
+		CLEAR_REG_BIT(PNX833X_PIO_INT_HI, pin);
+		SET_REG_BIT(PNX833X_PIO_INT_LO, pin);
+		break;
+	case GPIO_INT_EDGE_BOTH:
+		SET_REG_BIT(PNX833X_PIO_INT_EDGE, pin);
+		SET_REG_BIT(PNX833X_PIO_INT_HI, pin);
+		SET_REG_BIT(PNX833X_PIO_INT_LO, pin);
+		break;
+	default:
+		CLEAR_REG_BIT(PNX833X_PIO_INT_EDGE, pin);
+		CLEAR_REG_BIT(PNX833X_PIO_INT_HI, pin);
+		CLEAR_REG_BIT(PNX833X_PIO_INT_LO, pin);
+		break;
+	}
+}
+
+/* Enable/disable GPIO interrupt */
+static inline void pnx833x_gpio_enable_irq(unsigned int pin)
+{
+	SET_REG_BIT(PNX833X_PIO_INT_ENABLE, pin);
+}
+static inline void pnx833x_gpio_disable_irq(unsigned int pin)
+{
+	CLEAR_REG_BIT(PNX833X_PIO_INT_ENABLE, pin);
+}
+
+/* Clear GPIO interrupt request */
+static inline void pnx833x_gpio_clear_irq(unsigned int pin)
+{
+	SET_REG_BIT(PNX833X_PIO_INT_CLEAR, pin);
+	CLEAR_REG_BIT(PNX833X_PIO_INT_CLEAR, pin);
+}
+
+#endif

arch/mips/include/asm/mach-pnx833x/irq-mapping.h

+
+/*
+ *  irq.h: IRQ mappings for PNX833X.
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.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 program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __ASM_MIPS_MACH_PNX833X_IRQ_MAPPING_H
+#define __ASM_MIPS_MACH_PNX833X_IRQ_MAPPING_H
+/*
+ * The "IRQ numbers" are completely virtual.
+ *
+ * In PNX8330/1, we have 48 interrupt lines, numbered from 1 to 48.
+ * Let's use numbers 1..48 for PIC interrupts, number 0 for timer interrupt,
+ * numbers 49..64 for (virtual) GPIO interrupts.
+ *
+ * In PNX8335, we have 57 interrupt lines, numbered from 1 to 57,
+ * connected to PIC, which uses core hardware interrupt 2, and also
+ * a timer interrupt through hardware interrupt 5.
+ * Let's use numbers 1..64 for PIC interrupts, number 0 for timer interrupt,
+ * numbers 65..80 for (virtual) GPIO interrupts.
+ *
+ */
+#include <irq.h>
+
+#define PNX833X_TIMER_IRQ				(MIPS_CPU_IRQ_BASE + 7)
+
+/* Interrupts supported by PIC */
+#define PNX833X_PIC_I2C0_INT			(PNX833X_PIC_IRQ_BASE +  1)
+#define PNX833X_PIC_I2C1_INT			(PNX833X_PIC_IRQ_BASE +  2)
+#define PNX833X_PIC_UART0_INT			(PNX833X_PIC_IRQ_BASE +  3)
+#define PNX833X_PIC_UART1_INT			(PNX833X_PIC_IRQ_BASE +  4)
+#define PNX833X_PIC_TS_IN0_DV_INT		(PNX833X_PIC_IRQ_BASE +  5)
+#define PNX833X_PIC_TS_IN0_DMA_INT		(PNX833X_PIC_IRQ_BASE +  6)
+#define PNX833X_PIC_GPIO_INT			(PNX833X_PIC_IRQ_BASE +  7)
+#define PNX833X_PIC_AUDIO_DEC_INT		(PNX833X_PIC_IRQ_BASE +  8)
+#define PNX833X_PIC_VIDEO_DEC_INT		(PNX833X_PIC_IRQ_BASE +  9)
+#define PNX833X_PIC_CONFIG_INT			(PNX833X_PIC_IRQ_BASE + 10)
+#define PNX833X_PIC_AOI_INT				(PNX833X_PIC_IRQ_BASE + 11)
+#define PNX833X_PIC_SYNC_INT			(PNX833X_PIC_IRQ_BASE + 12)
+#define PNX8330_PIC_SPU_INT				(PNX833X_PIC_IRQ_BASE + 13)
+#define PNX8335_PIC_SATA_INT			(PNX833X_PIC_IRQ_BASE + 13)
+#define PNX833X_PIC_OSD_INT				(PNX833X_PIC_IRQ_BASE + 14)
+#define PNX833X_PIC_DISP1_INT			(PNX833X_PIC_IRQ_BASE + 15)
+#define PNX833X_PIC_DEINTERLACER_INT	(PNX833X_PIC_IRQ_BASE + 16)
+#define PNX833X_PIC_DISPLAY2_INT		(PNX833X_PIC_IRQ_BASE + 17)
+#define PNX833X_PIC_VC_INT				(PNX833X_PIC_IRQ_BASE + 18)
+#define PNX833X_PIC_SC_INT				(PNX833X_PIC_IRQ_BASE + 19)
+#define PNX833X_PIC_IDE_INT				(PNX833X_PIC_IRQ_BASE + 20)
+#define PNX833X_PIC_IDE_DMA_INT			(PNX833X_PIC_IRQ_BASE + 21)
+#define PNX833X_PIC_TS_IN1_DV_INT		(PNX833X_PIC_IRQ_BASE + 22)
+#define PNX833X_PIC_TS_IN1_DMA_INT		(PNX833X_PIC_IRQ_BASE + 23)
+#define PNX833X_PIC_SGDX_DMA_INT		(PNX833X_PIC_IRQ_BASE + 24)
+#define PNX833X_PIC_TS_OUT_INT			(PNX833X_PIC_IRQ_BASE + 25)
+#define PNX833X_PIC_IR_INT				(PNX833X_PIC_IRQ_BASE + 26)
+#define PNX833X_PIC_VMSP1_INT			(PNX833X_PIC_IRQ_BASE + 27)
+#define PNX833X_PIC_VMSP2_INT			(PNX833X_PIC_IRQ_BASE + 28)
+#define PNX833X_PIC_PIBC_INT			(PNX833X_PIC_IRQ_BASE + 29)
+#define PNX833X_PIC_TS_IN0_TRD_INT		(PNX833X_PIC_IRQ_BASE + 30)
+#define PNX833X_PIC_SGDX_TPD_INT		(PNX833X_PIC_IRQ_BASE + 31)
+#define PNX833X_PIC_USB_INT				(PNX833X_PIC_IRQ_BASE + 32)
+#define PNX833X_PIC_TS_IN1_TRD_INT		(PNX833X_PIC_IRQ_BASE + 33)
+#define PNX833X_PIC_CLOCK_INT			(PNX833X_PIC_IRQ_BASE + 34)
+#define PNX833X_PIC_SGDX_PARSER_INT		(PNX833X_PIC_IRQ_BASE + 35)
+#define PNX833X_PIC_VMSP_DMA_INT		(PNX833X_PIC_IRQ_BASE + 36)
+
+#if defined(CONFIG_SOC_PNX8335)
+#define PNX8335_PIC_MIU_INT					(PNX833X_PIC_IRQ_BASE + 37)
+#define PNX8335_PIC_AVCHIP_IRQ_INT			(PNX833X_PIC_IRQ_BASE + 38)
+#define PNX8335_PIC_SYNC_HD_INT				(PNX833X_PIC_IRQ_BASE + 39)
+#define PNX8335_PIC_DISP_HD_INT				(PNX833X_PIC_IRQ_BASE + 40)
+#define PNX8335_PIC_DISP_SCALER_INT			(PNX833X_PIC_IRQ_BASE + 41)
+#define PNX8335_PIC_OSD_HD1_INT				(PNX833X_PIC_IRQ_BASE + 42)
+#define PNX8335_PIC_DTL_WRITER_Y_INT		(PNX833X_PIC_IRQ_BASE + 43)
+#define PNX8335_PIC_DTL_WRITER_C_INT		(PNX833X_PIC_IRQ_BASE + 44)
+#define PNX8335_PIC_DTL_EMULATOR_Y_IR_INT	(PNX833X_PIC_IRQ_BASE + 45)
+#define PNX8335_PIC_DTL_EMULATOR_C_IR_INT	(PNX833X_PIC_IRQ_BASE + 46)
+#define PNX8335_PIC_DENC_TTX_INT			(PNX833X_PIC_IRQ_BASE + 47)
+#define PNX8335_PIC_MMI_SIF0_INT			(PNX833X_PIC_IRQ_BASE + 48)
+#define PNX8335_PIC_MMI_SIF1_INT			(PNX833X_PIC_IRQ_BASE + 49)
+#define PNX8335_PIC_MMI_CDMMU_INT			(PNX833X_PIC_IRQ_BASE + 50)
+#define PNX8335_PIC_PIBCS_INT				(PNX833X_PIC_IRQ_BASE + 51)
+#define PNX8335_PIC_ETHERNET_INT			(PNX833X_PIC_IRQ_BASE + 52)
+#define PNX8335_PIC_VMSP1_0_INT				(PNX833X_PIC_IRQ_BASE + 53)
+#define PNX8335_PIC_VMSP1_1_INT				(PNX833X_PIC_IRQ_BASE + 54)
+#define PNX8335_PIC_VMSP1_DMA_INT			(PNX833X_PIC_IRQ_BASE + 55)
+#define PNX8335_PIC_TDGR_DE_INT				(PNX833X_PIC_IRQ_BASE + 56)
+#define PNX8335_PIC_IR1_IRQ_INT				(PNX833X_PIC_IRQ_BASE + 57)
+#endif
+
+/* GPIO interrupts */
+#define PNX833X_GPIO_0_INT			(PNX833X_GPIO_IRQ_BASE +  0)
+#define PNX833X_GPIO_1_INT			(PNX833X_GPIO_IRQ_BASE +  1)
+#define PNX833X_GPIO_2_INT			(PNX833X_GPIO_IRQ_BASE +  2)
+#define PNX833X_GPIO_3_INT			(PNX833X_GPIO_IRQ_BASE +  3)
+#define PNX833X_GPIO_4_INT			(PNX833X_GPIO_IRQ_BASE +  4)
+#define PNX833X_GPIO_5_INT			(PNX833X_GPIO_IRQ_BASE +  5)
+#define PNX833X_GPIO_6_INT			(PNX833X_GPIO_IRQ_BASE +  6)
+#define PNX833X_GPIO_7_INT			(PNX833X_GPIO_IRQ_BASE +  7)
+#define PNX833X_GPIO_8_INT			(PNX833X_GPIO_IRQ_BASE +  8)
+#define PNX833X_GPIO_9_INT			(PNX833X_GPIO_IRQ_BASE +  9)
+#define PNX833X_GPIO_10_INT			(PNX833X_GPIO_IRQ_BASE + 10)
+#define PNX833X_GPIO_11_INT			(PNX833X_GPIO_IRQ_BASE + 11)
+#define PNX833X_GPIO_12_INT			(PNX833X_GPIO_IRQ_BASE + 12)
+#define PNX833X_GPIO_13_INT			(PNX833X_GPIO_IRQ_BASE + 13)
+#define PNX833X_GPIO_14_INT			(PNX833X_GPIO_IRQ_BASE + 14)
+#define PNX833X_GPIO_15_INT			(PNX833X_GPIO_IRQ_BASE + 15)
+
+#endif
+

arch/mips/include/asm/mach-pnx833x/irq.h

+/*
+ *  irq.h: IRQ mappings for PNX833X.
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.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 program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __ASM_MIPS_MACH_PNX833X_IRQ_H
+#define __ASM_MIPS_MACH_PNX833X_IRQ_H
+/*
+ * The "IRQ numbers" are completely virtual.
+ *
+ * In PNX8330/1, we have 48 interrupt lines, numbered from 1 to 48.
+ * Let's use numbers 1..48 for PIC interrupts, number 0 for timer interrupt,
+ * numbers 49..64 for (virtual) GPIO interrupts.
+ *
+ * In PNX8335, we have 57 interrupt lines, numbered from 1 to 57,
+ * connected to PIC, which uses core hardware interrupt 2, and also
+ * a timer interrupt through hardware interrupt 5.
+ * Let's use numbers 1..64 for PIC interrupts, number 0 for timer interrupt,
+ * numbers 65..80 for (virtual) GPIO interrupts.
+ *
+ */
+#if defined(CONFIG_SOC_PNX8335)
+	#define PNX833X_PIC_NUM_IRQ			58
+#else
+	#define PNX833X_PIC_NUM_IRQ			37
+#endif
+
+#define MIPS_CPU_NUM_IRQ				8
+#define PNX833X_GPIO_NUM_IRQ			16
+
+#define MIPS_CPU_IRQ_BASE				0
+#define PNX833X_PIC_IRQ_BASE			(MIPS_CPU_IRQ_BASE + MIPS_CPU_NUM_IRQ)
+#define PNX833X_GPIO_IRQ_BASE			(PNX833X_PIC_IRQ_BASE + PNX833X_PIC_NUM_IRQ)
+#define NR_IRQS							(MIPS_CPU_NUM_IRQ + PNX833X_PIC_NUM_IRQ + PNX833X_GPIO_NUM_IRQ)
+
+#endif

arch/mips/include/asm/mach-pnx833x/pnx833x.h

+/*
+ *  pnx833x.h: Register mappings for PNX833X.
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.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 program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef __ASM_MIPS_MACH_PNX833X_PNX833X_H
+#define __ASM_MIPS_MACH_PNX833X_PNX833X_H
+
+/* All regs are accessed in KSEG1 */
+#define PNX833X_BASE		(0xa0000000ul + 0x17E00000ul)
+
+#define PNX833X_REG(offs)	(*((volatile unsigned long *)(PNX833X_BASE + offs)))
+
+/* Registers are named exactly as in PNX833X docs, just with PNX833X_ prefix */
+
+/* Read access to multibit fields */
+#define PNX833X_BIT(val, reg, field)	((val) & PNX833X_##reg##_##field)
+#define PNX833X_REGBIT(reg, field)	PNX833X_BIT(PNX833X_##reg, reg, field)
+
+/* Use PNX833X_FIELD to extract a field from val */
+#define PNX_FIELD(cpu, val, reg, field) \
+		(((val) & PNX##cpu##_##reg##_##field##_MASK) >> \
+			PNX##cpu##_##reg##_##field##_SHIFT)
+#define PNX833X_FIELD(val, reg, field)	PNX_FIELD(833X, val, reg, field)
+#define PNX8330_FIELD(val, reg, field)	PNX_FIELD(8330, val, reg, field)
+#define PNX8335_FIELD(val, reg, field)	PNX_FIELD(8335, val, reg, field)
+
+/* Use PNX833X_REGFIELD to extract a field from a register */
+#define PNX833X_REGFIELD(reg, field)	PNX833X_FIELD(PNX833X_##reg, reg, field)
+#define PNX8330_REGFIELD(reg, field)	PNX8330_FIELD(PNX8330_##reg, reg, field)
+#define PNX8335_REGFIELD(reg, field)	PNX8335_FIELD(PNX8335_##reg, reg, field)
+
+
+#define PNX_WRITEFIELD(cpu, val, reg, field) \
+	(PNX##cpu##_##reg = (PNX##cpu##_##reg & ~(PNX##cpu##_##reg##_##field##_MASK)) | \
+						((val) << PNX##cpu##_##reg##_##field##_SHIFT))
+#define PNX833X_WRITEFIELD(val, reg, field) \
+					PNX_WRITEFIELD(833X, val, reg, field)
+#define PNX8330_WRITEFIELD(val, reg, field) \
+					PNX_WRITEFIELD(8330, val, reg, field)
+#define PNX8335_WRITEFIELD(val, reg, field) \
+					PNX_WRITEFIELD(8335, val, reg, field)
+
+
+/* Macros to detect CPU type */
+
+#define PNX833X_CONFIG_MODULE_ID		PNX833X_REG(0x7FFC)
+#define PNX833X_CONFIG_MODULE_ID_MAJREV_MASK	0x0000f000
+#define PNX833X_CONFIG_MODULE_ID_MAJREV_SHIFT	12
+#define PNX8330_CONFIG_MODULE_MAJREV		4
+#define PNX8335_CONFIG_MODULE_MAJREV		5
+#define CPU_IS_PNX8330	(PNX833X_REGFIELD(CONFIG_MODULE_ID, MAJREV) == \
+					PNX8330_CONFIG_MODULE_MAJREV)
+#define CPU_IS_PNX8335	(PNX833X_REGFIELD(CONFIG_MODULE_ID, MAJREV) == \
+					PNX8335_CONFIG_MODULE_MAJREV)
+
+
+
+#define PNX833X_RESET_CONTROL		PNX833X_REG(0x8004)
+#define PNX833X_RESET_CONTROL_2 	PNX833X_REG(0x8014)
+
+#define PNX833X_PIC_REG(offs)		PNX833X_REG(0x01000 + (offs))
+#define PNX833X_PIC_INT_PRIORITY	PNX833X_PIC_REG(0x0)
+#define PNX833X_PIC_INT_SRC		PNX833X_PIC_REG(0x4)
+#define PNX833X_PIC_INT_SRC_INT_SRC_MASK	0x00000FF8ul	/* bits 11:3 */
+#define PNX833X_PIC_INT_SRC_INT_SRC_SHIFT	3
+#define PNX833X_PIC_INT_REG(irq)	PNX833X_PIC_REG(0x10 + 4*(irq))
+
+#define PNX833X_CLOCK_CPUCP_CTL	PNX833X_REG(0x9228)
+#define PNX833X_CLOCK_CPUCP_CTL_EXIT_RESET	0x00000002ul	/* bit 1 */
+#define PNX833X_CLOCK_CPUCP_CTL_DIV_CLOCK_MASK	0x00000018ul	/* bits 4:3 */
+#define PNX833X_CLOCK_CPUCP_CTL_DIV_CLOCK_SHIFT	3
+
+#define PNX8335_CLOCK_PLL_CPU_CTL		PNX833X_REG(0x9020)
+#define PNX8335_CLOCK_PLL_CPU_CTL_FREQ_MASK	0x1f
+#define PNX8335_CLOCK_PLL_CPU_CTL_FREQ_SHIFT	0
+
+#define PNX833X_CONFIG_MUX		PNX833X_REG(0x7004)
+#define PNX833X_CONFIG_MUX_IDE_MUX	0x00000080		/* bit 7 */
+
+#define PNX8330_CONFIG_POLYFUSE_7	PNX833X_REG(0x7040)
+#define PNX8330_CONFIG_POLYFUSE_7_BOOT_MODE_MASK	0x00180000
+#define PNX8330_CONFIG_POLYFUSE_7_BOOT_MODE_SHIFT	19
+
+#define PNX833X_PIO_IN		PNX833X_REG(0xF000)
+#define PNX833X_PIO_OUT		PNX833X_REG(0xF004)
+#define PNX833X_PIO_DIR		PNX833X_REG(0xF008)
+#define PNX833X_PIO_SEL		PNX833X_REG(0xF014)
+#define PNX833X_PIO_INT_EDGE	PNX833X_REG(0xF020)
+#define PNX833X_PIO_INT_HI	PNX833X_REG(0xF024)
+#define PNX833X_PIO_INT_LO	PNX833X_REG(0xF028)
+#define PNX833X_PIO_INT_STATUS	PNX833X_REG(0xFFE0)
+#define PNX833X_PIO_INT_ENABLE	PNX833X_REG(0xFFE4)
+#define PNX833X_PIO_INT_CLEAR	PNX833X_REG(0xFFE8)
+#define PNX833X_PIO_IN2		PNX833X_REG(0xF05C)
+#define PNX833X_PIO_OUT2	PNX833X_REG(0xF060)
+#define PNX833X_PIO_DIR2	PNX833X_REG(0xF064)
+#define PNX833X_PIO_SEL2	PNX833X_REG(0xF068)
+
+#define PNX833X_UART0_PORTS_START	(PNX833X_BASE + 0xB000)
+#define PNX833X_UART0_PORTS_END		(PNX833X_BASE + 0xBFFF)
+#define PNX833X_UART1_PORTS_START	(PNX833X_BASE + 0xC000)
+#define PNX833X_UART1_PORTS_END		(PNX833X_BASE + 0xCFFF)
+
+#define PNX833X_USB_PORTS_START		(PNX833X_BASE + 0x19000)
+#define PNX833X_USB_PORTS_END		(PNX833X_BASE + 0x19FFF)
+
+#define PNX833X_CONFIG_USB		PNX833X_REG(0x7008)
+
+#define PNX833X_I2C0_PORTS_START	(PNX833X_BASE + 0xD000)
+#define PNX833X_I2C0_PORTS_END		(PNX833X_BASE + 0xDFFF)
+#define PNX833X_I2C1_PORTS_START	(PNX833X_BASE + 0xE000)
+#define PNX833X_I2C1_PORTS_END		(PNX833X_BASE + 0xEFFF)
+
+#define PNX833X_IDE_PORTS_START		(PNX833X_BASE + 0x1A000)
+#define PNX833X_IDE_PORTS_END		(PNX833X_BASE + 0x1AFFF)
+#define PNX833X_IDE_MODULE_ID		PNX833X_REG(0x1AFFC)
+
+#define PNX833X_IDE_MODULE_ID_MODULE_ID_MASK	0xFFFF0000
+#define PNX833X_IDE_MODULE_ID_MODULE_ID_SHIFT	16
+#define PNX833X_IDE_MODULE_ID_VALUE		0xA009
+
+
+#define PNX833X_MIU_SEL0			PNX833X_REG(0x2004)
+#define PNX833X_MIU_SEL0_TIMING		PNX833X_REG(0x2008)
+#define PNX833X_MIU_SEL1			PNX833X_REG(0x200C)
+#define PNX833X_MIU_SEL1_TIMING		PNX833X_REG(0x2010)
+#define PNX833X_MIU_SEL2			PNX833X_REG(0x2014)
+#define PNX833X_MIU_SEL2_TIMING		PNX833X_REG(0x2018)
+#define PNX833X_MIU_SEL3			PNX833X_REG(0x201C)
+#define PNX833X_MIU_SEL3_TIMING		PNX833X_REG(0x2020)
+
+#define PNX833X_MIU_SEL0_SPI_MODE_ENABLE_MASK	(1 << 14)
+#define PNX833X_MIU_SEL0_SPI_MODE_ENABLE_SHIFT	14
+
+#define PNX833X_MIU_SEL0_BURST_MODE_ENABLE_MASK	(1 << 7)
+#define PNX833X_MIU_SEL0_BURST_MODE_ENABLE_SHIFT	7
+
+#define PNX833X_MIU_SEL0_BURST_PAGE_LEN_MASK	(0xF << 9)
+#define PNX833X_MIU_SEL0_BURST_PAGE_LEN_SHIFT	9
+
+#define PNX833X_MIU_CONFIG_SPI		PNX833X_REG(0x2000)
+
+#define PNX833X_MIU_CONFIG_SPI_OPCODE_MASK	(0xFF << 3)
+#define PNX833X_MIU_CONFIG_SPI_OPCODE_SHIFT	3
+
+#define PNX833X_MIU_CONFIG_SPI_DATA_ENABLE_MASK	(1 << 2)
+#define PNX833X_MIU_CONFIG_SPI_DATA_ENABLE_SHIFT	2
+
+#define PNX833X_MIU_CONFIG_SPI_ADDR_ENABLE_MASK	(1 << 1)
+#define PNX833X_MIU_CONFIG_SPI_ADDR_ENABLE_SHIFT	1
+
+#define PNX833X_MIU_CONFIG_SPI_SYNC_MASK	(1 << 0)
+#define PNX833X_MIU_CONFIG_SPI_SYNC_SHIFT	0
+
+#define PNX833X_WRITE_CONFIG_SPI(opcode, data_enable, addr_enable, sync) \
+   (PNX833X_MIU_CONFIG_SPI =						\
+    ((opcode) << PNX833X_MIU_CONFIG_SPI_OPCODE_SHIFT) |			\
+    ((data_enable) << PNX833X_MIU_CONFIG_SPI_DATA_ENABLE_SHIFT) |	\
+    ((addr_enable) << PNX833X_MIU_CONFIG_SPI_ADDR_ENABLE_SHIFT) |	\
+    ((sync) << PNX833X_MIU_CONFIG_SPI_SYNC_SHIFT))
+
+#define PNX8335_IP3902_PORTS_START		(PNX833X_BASE + 0x2F000)
+#define PNX8335_IP3902_PORTS_END		(PNX833X_BASE + 0x2FFFF)
+#define PNX8335_IP3902_MODULE_ID		PNX833X_REG(0x2FFFC)
+
+#define PNX8335_IP3902_MODULE_ID_MODULE_ID_MASK		0xFFFF0000
+#define PNX8335_IP3902_MODULE_ID_MODULE_ID_SHIFT	16
+#define PNX8335_IP3902_MODULE_ID_VALUE			0x3902
+
+ /* I/O location(gets remapped)*/
+#define PNX8335_NAND_BASE	    0x18000000
+/* I/O location with CLE high */
+#define PNX8335_NAND_CLE_MASK	0x00100000
+/* I/O location with ALE high */
+#define PNX8335_NAND_ALE_MASK	0x00010000
+
+#define PNX8335_SATA_PORTS_START	(PNX833X_BASE + 0x2E000)
+#define PNX8335_SATA_PORTS_END		(PNX833X_BASE + 0x2EFFF)
+#define PNX8335_SATA_MODULE_ID		PNX833X_REG(0x2EFFC)
+
+#define PNX8335_SATA_MODULE_ID_MODULE_ID_MASK	0xFFFF0000
+#define PNX8335_SATA_MODULE_ID_MODULE_ID_SHIFT	16
+#define PNX8335_SATA_MODULE_ID_VALUE		0xA099
+
+#endif

arch/mips/include/asm/mach-pnx833x/war.h

+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org>
+ */
+#ifndef __ASM_MIPS_MACH_PNX833X_WAR_H
+#define __ASM_MIPS_MACH_PNX833X_WAR_H
+
+#define R4600_V1_INDEX_ICACHEOP_WAR	0
+#define R4600_V1_HIT_CACHEOP_WAR	0
+#define R4600_V2_HIT_CACHEOP_WAR	0
+#define R5432_CP0_INTERRUPT_WAR		0
+#define BCM1250_M3_WAR			0
+#define SIBYTE_1956_WAR			0
+#define MIPS4K_ICACHE_REFILL_WAR	0
+#define MIPS_CACHE_SYNC_WAR		0
+#define TX49XX_ICACHE_INDEX_INV_WAR	0
+#define RM9000_CDEX_SMP_WAR		0
+#define ICACHE_REFILLS_WORKAROUND_WAR	0
+#define R10000_LLSC_WAR			0
+#define MIPS34K_MISSED_ITLB_WAR		0
+
+#endif /* __ASM_MIPS_MACH_PNX8550_WAR_H */

arch/mips/nxp/pnx833x/common/Makefile

+obj-y := interrupts.o platform.o prom.o setup.o reset.o
+
+EXTRA_CFLAGS += -Werror

arch/mips/nxp/pnx833x/common/interrupts.c

+/*
+ *  interrupts.c: Interrupt mappings for PNX833X.
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.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 program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/kernel.h>
+#include <linux/irq.h>
+#include <linux/hardirq.h>
+#include <linux/interrupt.h>
+#include <asm/mipsregs.h>
+#include <asm/irq_cpu.h>
+#include <irq.h>
+#include <irq-mapping.h>
+#include <gpio.h>
+
+static int mips_cpu_timer_irq;
+
+static const unsigned int irq_prio[PNX833X_PIC_NUM_IRQ] =
+{
+    0, /* unused */
+    4, /* PNX833X_PIC_I2C0_INT                 1 */
+    4, /* PNX833X_PIC_I2C1_INT                 2 */
+    1, /* PNX833X_PIC_UART0_INT                3 */
+    1, /* PNX833X_PIC_UART1_INT                4 */
+    6, /* PNX833X_PIC_TS_IN0_DV_INT            5 */
+    6, /* PNX833X_PIC_TS_IN0_DMA_INT           6 */
+    7, /* PNX833X_PIC_GPIO_INT                 7 */
+    4, /* PNX833X_PIC_AUDIO_DEC_INT            8 */
+    5, /* PNX833X_PIC_VIDEO_DEC_INT            9 */
+    4, /* PNX833X_PIC_CONFIG_INT              10 */
+    4, /* PNX833X_PIC_AOI_INT                 11 */
+    9, /* PNX833X_PIC_SYNC_INT                12 */
+    9, /* PNX8335_PIC_SATA_INT                13 */
+    4, /* PNX833X_PIC_OSD_INT                 14 */
+    9, /* PNX833X_PIC_DISP1_INT               15 */
+    4, /* PNX833X_PIC_DEINTERLACER_INT        16 */
+    9, /* PNX833X_PIC_DISPLAY2_INT            17 */
+    4, /* PNX833X_PIC_VC_INT                  18 */
+    4, /* PNX833X_PIC_SC_INT                  19 */
+    9, /* PNX833X_PIC_IDE_INT                 20 */
+    9, /* PNX833X_PIC_IDE_DMA_INT             21 */
+    6, /* PNX833X_PIC_TS_IN1_DV_INT           22 */
+    6, /* PNX833X_PIC_TS_IN1_DMA_INT          23 */
+    4, /* PNX833X_PIC_SGDX_DMA_INT            24 */
+    4, /* PNX833X_PIC_TS_OUT_INT              25 */
+    4, /* PNX833X_PIC_IR_INT                  26 */
+    3, /* PNX833X_PIC_VMSP1_INT               27 */
+    3, /* PNX833X_PIC_VMSP2_INT               28 */
+    4, /* PNX833X_PIC_PIBC_INT                29 */
+    4, /* PNX833X_PIC_TS_IN0_TRD_INT          30 */
+    4, /* PNX833X_PIC_SGDX_TPD_INT            31 */
+    5, /* PNX833X_PIC_USB_INT                 32 */
+    4, /* PNX833X_PIC_TS_IN1_TRD_INT          33 */
+    4, /* PNX833X_PIC_CLOCK_INT               34 */
+    4, /* PNX833X_PIC_SGDX_PARSER_INT         35 */
+    4, /* PNX833X_PIC_VMSP_DMA_INT            36 */
+#if defined(CONFIG_SOC_PNX8335)
+    4, /* PNX8335_PIC_MIU_INT                 37 */
+    4, /* PNX8335_PIC_AVCHIP_IRQ_INT          38 */
+    9, /* PNX8335_PIC_SYNC_HD_INT             39 */
+    9, /* PNX8335_PIC_DISP_HD_INT             40 */
+    9, /* PNX8335_PIC_DISP_SCALER_INT         41 */
+    4, /* PNX8335_PIC_OSD_HD1_INT             42 */
+    4, /* PNX8335_PIC_DTL_WRITER_Y_INT        43 */
+    4, /* PNX8335_PIC_DTL_WRITER_C_INT        44 */
+    4, /* PNX8335_PIC_DTL_EMULATOR_Y_IR_INT   45 */
+    4, /* PNX8335_PIC_DTL_EMULATOR_C_IR_INT   46 */
+    4, /* PNX8335_PIC_DENC_TTX_INT            47 */
+    4, /* PNX8335_PIC_MMI_SIF0_INT            48 */
+    4, /* PNX8335_PIC_MMI_SIF1_INT            49 */
+    4, /* PNX8335_PIC_MMI_CDMMU_INT           50 */
+    4, /* PNX8335_PIC_PIBCS_INT               51 */
+   12, /* PNX8335_PIC_ETHERNET_INT            52 */
+    3, /* PNX8335_PIC_VMSP1_0_INT             53 */
+    3, /* PNX8335_PIC_VMSP1_1_INT             54 */
+    4, /* PNX8335_PIC_VMSP1_DMA_INT           55 */
+    4, /* PNX8335_PIC_TDGR_DE_INT             56 */
+    4, /* PNX8335_PIC_IR1_IRQ_INT             57 */
+#endif
+};
+
+static void pnx833x_timer_dispatch(void)
+{
+	do_IRQ(mips_cpu_timer_irq);
+}
+
+static void pic_dispatch(void)
+{
+	unsigned int irq = PNX833X_REGFIELD(PIC_INT_SRC, INT_SRC);
+
+	if ((irq >= 1) && (irq < (PNX833X_PIC_NUM_IRQ))) {
+		unsigned long priority = PNX833X_PIC_INT_PRIORITY;
+		PNX833X_PIC_INT_PRIORITY = irq_prio[irq];
+
+		if (irq == PNX833X_PIC_GPIO_INT) {
+			unsigned long mask = PNX833X_PIO_INT_STATUS & PNX833X_PIO_INT_ENABLE;
+			int pin;
+			while ((pin = ffs(mask & 0xffff))) {
+				pin -= 1;
+				do_IRQ(PNX833X_GPIO_IRQ_BASE + pin);
+				mask &= ~(1 << pin);
+			}
+		} else {
+			do_IRQ(irq + PNX833X_PIC_IRQ_BASE);
+		}
+
+		PNX833X_PIC_INT_PRIORITY = priority;
+	} else {
+		printk(KERN_ERR "plat_irq_dispatch: unexpected irq %u\n", irq);
+	}
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+	unsigned int pending = read_c0_status() & read_c0_cause();
+
+	if (pending & STATUSF_IP4)
+		pic_dispatch();
+	else if (pending & STATUSF_IP7)
+		do_IRQ(PNX833X_TIMER_IRQ);
+	else
+		spurious_interrupt();
+}
+
+static inline void pnx833x_hard_enable_pic_irq(unsigned int irq)
+{
+	/* Currently we do this by setting IRQ priority to 1.
+	   If priority support is being implemented, 1 should be repalced
+		by a better value. */
+	PNX833X_PIC_INT_REG(irq) = irq_prio[irq];
+}
+
+static inline void pnx833x_hard_disable_pic_irq(unsigned int irq)
+{
+	/* Disable IRQ by writing setting it's priority to 0 */
+	PNX833X_PIC_INT_REG(irq) = 0;
+}
+
+static int irqflags[PNX833X_PIC_NUM_IRQ];	/* initialized by zeroes */
+#define IRQFLAG_STARTED		1
+#define IRQFLAG_DISABLED	2
+
+static DEFINE_SPINLOCK(pnx833x_irq_lock);
+
+static unsigned int pnx833x_startup_pic_irq(unsigned int irq)
+{
+	unsigned long flags;
+	unsigned int pic_irq = irq - PNX833X_PIC_IRQ_BASE;
+
+	spin_lock_irqsave(&pnx833x_irq_lock, flags);
+
+	irqflags[pic_irq] = IRQFLAG_STARTED;	/* started, not disabled */
+	pnx833x_hard_enable_pic_irq(pic_irq);
+
+	spin_unlock_irqrestore(&pnx833x_irq_lock, flags);
+	return 0;
+}
+
+static void pnx833x_shutdown_pic_irq(unsigned int irq)
+{
+	unsigned long flags;
+	unsigned int pic_irq = irq - PNX833X_PIC_IRQ_BASE;
+
+	spin_lock_irqsave(&pnx833x_irq_lock, flags);
+
+	irqflags[pic_irq] = 0;			/* not started */
+	pnx833x_hard_disable_pic_irq(pic_irq);
+
+	spin_unlock_irqrestore(&pnx833x_irq_lock, flags);
+}
+
+static void pnx833x_enable_pic_irq(unsigned int irq)
+{
+	unsigned long flags;
+	unsigned int pic_irq = irq - PNX833X_PIC_IRQ_BASE;
+
+	spin_lock_irqsave(&pnx833x_irq_lock, flags);
+
+	irqflags[pic_irq] &= ~IRQFLAG_DISABLED;
+	if (irqflags[pic_irq] == IRQFLAG_STARTED)
+		pnx833x_hard_enable_pic_irq(pic_irq);
+
+	spin_unlock_irqrestore(&pnx833x_irq_lock, flags);
+}
+
+static void pnx833x_disable_pic_irq(unsigned int irq)
+{
+	unsigned long flags;
+	unsigned int pic_irq = irq - PNX833X_PIC_IRQ_BASE;
+
+	spin_lock_irqsave(&pnx833x_irq_lock, flags);
+
+	irqflags[pic_irq] |= IRQFLAG_DISABLED;
+	pnx833x_hard_disable_pic_irq(pic_irq);
+
+	spin_unlock_irqrestore(&pnx833x_irq_lock, flags);
+}
+
+static void pnx833x_ack_pic_irq(unsigned int irq)
+{
+}
+
+static void pnx833x_end_pic_irq(unsigned int irq)
+{
+}
+
+static DEFINE_SPINLOCK(pnx833x_gpio_pnx833x_irq_lock);
+
+static unsigned int pnx833x_startup_gpio_irq(unsigned int irq)
+{
+	int pin = irq - PNX833X_GPIO_IRQ_BASE;
+	unsigned long flags;
+	spin_lock_irqsave(&pnx833x_gpio_pnx833x_irq_lock, flags);
+	pnx833x_gpio_enable_irq(pin);
+	spin_unlock_irqrestore(&pnx833x_gpio_pnx833x_irq_lock, flags);
+	return 0;
+}
+
+static void pnx833x_enable_gpio_irq(unsigned int irq)
+{
+	int pin = irq - PNX833X_GPIO_IRQ_BASE;
+	unsigned long flags;
+	spin_lock_irqsave(&pnx833x_gpio_pnx833x_irq_lock, flags);
+	pnx833x_gpio_enable_irq(pin);
+	spin_unlock_irqrestore(&pnx833x_gpio_pnx833x_irq_lock, flags);
+}
+
+static void pnx833x_disable_gpio_irq(unsigned int irq)
+{
+	int pin = irq - PNX833X_GPIO_IRQ_BASE;
+	unsigned long flags;
+	spin_lock_irqsave(&pnx833x_gpio_pnx833x_irq_lock, flags);
+	pnx833x_gpio_disable_irq(pin);
+	spin_unlock_irqrestore(&pnx833x_gpio_pnx833x_irq_lock, flags);
+}
+
+static void pnx833x_ack_gpio_irq(unsigned int irq)
+{
+}
+
+static void pnx833x_end_gpio_irq(unsigned int irq)
+{
+	int pin = irq - PNX833X_GPIO_IRQ_BASE;
+	unsigned long flags;
+	spin_lock_irqsave(&pnx833x_gpio_pnx833x_irq_lock, flags);
+	pnx833x_gpio_clear_irq(pin);
+	spin_unlock_irqrestore(&pnx833x_gpio_pnx833x_irq_lock, flags);
+}
+
+static int pnx833x_set_type_gpio_irq(unsigned int irq, unsigned int flow_type)
+{
+	int pin = irq - PNX833X_GPIO_IRQ_BASE;
+	int gpio_mode;
+
+	switch (flow_type) {
+	case IRQ_TYPE_EDGE_RISING:
+		gpio_mode = GPIO_INT_EDGE_RISING;
+		break;
+	case IRQ_TYPE_EDGE_FALLING:
+		gpio_mode = GPIO_INT_EDGE_FALLING;
+		break;
+	case IRQ_TYPE_EDGE_BOTH:
+		gpio_mode = GPIO_INT_EDGE_BOTH;
+		break;
+	case IRQ_TYPE_LEVEL_HIGH:
+		gpio_mode = GPIO_INT_LEVEL_HIGH;
+		break;
+	case IRQ_TYPE_LEVEL_LOW:
+		gpio_mode = GPIO_INT_LEVEL_LOW;
+		break;
+	default:
+		gpio_mode = GPIO_INT_NONE;
+		break;
+	}
+
+	pnx833x_gpio_setup_irq(gpio_mode, pin);
+
+	return 0;
+}
+
+static struct irq_chip pnx833x_pic_irq_type = {
+	.typename = "PNX-PIC",
+	.startup = pnx833x_startup_pic_irq,
+	.shutdown = pnx833x_shutdown_pic_irq,
+	.enable = pnx833x_enable_pic_irq,
+	.disable = pnx833x_disable_pic_irq,
+	.ack = pnx833x_ack_pic_irq,
+	.end = pnx833x_end_pic_irq
+};
+
+static struct irq_chip pnx833x_gpio_irq_type = {
+	.typename = "PNX-GPIO",
+	.startup = pnx833x_startup_gpio_irq,
+	.shutdown = pnx833x_disable_gpio_irq,
+	.enable = pnx833x_enable_gpio_irq,
+	.disable = pnx833x_disable_gpio_irq,
+	.ack = pnx833x_ack_gpio_irq,
+	.end = pnx833x_end_gpio_irq,
+	.set_type = pnx833x_set_type_gpio_irq
+};
+
+void __init arch_init_irq(void)
+{
+	unsigned int irq;
+
+	/* setup standard internal cpu irqs */
+	mips_cpu_irq_init();
+
+	/* Set IRQ information in irq_desc */
+	for (irq = PNX833X_PIC_IRQ_BASE; irq < (PNX833X_PIC_IRQ_BASE + PNX833X_PIC_NUM_IRQ); irq++) {
+		pnx833x_hard_disable_pic_irq(irq);
+		set_irq_chip_and_handler(irq, &pnx833x_pic_irq_type, handle_simple_irq);
+	}
+
+	for (irq = PNX833X_GPIO_IRQ_BASE; irq < (PNX833X_GPIO_IRQ_BASE + PNX833X_GPIO_NUM_IRQ); irq++)
+		set_irq_chip_and_handler(irq, &pnx833x_gpio_irq_type, handle_simple_irq);
+
+	/* Set PIC priority limiter register to 0 */
+	PNX833X_PIC_INT_PRIORITY = 0;
+
+	/* Setup GPIO IRQ dispatching */
+	pnx833x_startup_pic_irq(PNX833X_PIC_GPIO_INT);
+
+	/* Enable PIC IRQs (HWIRQ2) */
+	if (cpu_has_vint)
+		set_vi_handler(4, pic_dispatch);
+
+	write_c0_status(read_c0_status() | IE_IRQ2);
+}
+
+unsigned int __cpuinit get_c0_compare_int(void)
+{
+	if (cpu_has_vint)
+		set_vi_handler(cp0_compare_irq, pnx833x_timer_dispatch);
+
+	mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
+	return mips_cpu_timer_irq;
+}
+
+void __init plat_time_init(void)
+{
+	/* calculate mips_hpt_frequency based on PNX833X_CLOCK_CPUCP_CTL reg */
+
+	extern unsigned long mips_hpt_frequency;
+	unsigned long reg = PNX833X_CLOCK_CPUCP_CTL;
+
+	if (!(PNX833X_BIT(reg, CLOCK_CPUCP_CTL, EXIT_RESET))) {
+		/* Functional clock is disabled so use crystal frequency */
+		mips_hpt_frequency = 25;
+	} else {
+#if defined(CONFIG_SOC_PNX8335)
+		/* Functional clock is enabled, so get clock multiplier */
+		mips_hpt_frequency = 90 + (10 * PNX8335_REGFIELD(CLOCK_PLL_CPU_CTL, FREQ));
+#else
+		static const unsigned long int freq[4] = {240, 160, 120, 80};
+		mips_hpt_frequency = freq[PNX833X_FIELD(reg, CLOCK_CPUCP_CTL, DIV_CLOCK)];
+#endif
+	}
+
+	printk(KERN_INFO "CPU clock is %ld MHz\n", mips_hpt_frequency);
+
+	mips_hpt_frequency *= 500000;
+}
+

arch/mips/nxp/pnx833x/common/platform.c

+/*
+ *  platform.c: platform support for PNX833X.
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.com>
+ *
+ *  Based on software written by:
+ *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/resource.h>
+#include <linux/serial.h>
+#include <linux/serial_pnx8xxx.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+
+#ifdef CONFIG_I2C_PNX0105
+/* Until i2c driver available in kernel.*/
+#include <linux/i2c-pnx0105.h>
+#endif
+
+#include <irq.h>
+#include <irq-mapping.h>
+#include <pnx833x.h>
+
+static u64 uart_dmamask     = DMA_32BIT_MASK;
+
+static struct resource pnx833x_uart_resources[] = {
+	[0] = {
+		.start		= PNX833X_UART0_PORTS_START,
+		.end		= PNX833X_UART0_PORTS_END,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= PNX833X_PIC_UART0_INT,
+		.end		= PNX833X_PIC_UART0_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start		= PNX833X_UART1_PORTS_START,
+		.end		= PNX833X_UART1_PORTS_END,
+		.flags		= IORESOURCE_MEM,
+	},
+	[3] = {
+		.start		= PNX833X_PIC_UART1_INT,
+		.end		= PNX833X_PIC_UART1_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+struct pnx8xxx_port pnx8xxx_ports[] = {
+	[0] = {
+		.port   = {
+			.type		= PORT_PNX8XXX,
+			.iotype		= UPIO_MEM,
+			.membase	= (void __iomem *)PNX833X_UART0_PORTS_START,
+			.mapbase	= PNX833X_UART0_PORTS_START,
+			.irq		= PNX833X_PIC_UART0_INT,
+			.uartclk	= 3692300,
+			.fifosize	= 16,
+			.flags		= UPF_BOOT_AUTOCONF,
+			.line		= 0,
+		},
+	},
+	[1] = {
+		.port   = {
+			.type		= PORT_PNX8XXX,
+			.iotype		= UPIO_MEM,
+			.membase	= (void __iomem *)PNX833X_UART1_PORTS_START,
+			.mapbase	= PNX833X_UART1_PORTS_START,
+			.irq		= PNX833X_PIC_UART1_INT,
+			.uartclk	= 3692300,
+			.fifosize	= 16,
+			.flags		= UPF_BOOT_AUTOCONF,
+			.line		= 1,
+		},
+	},
+};
+
+static struct platform_device pnx833x_uart_device = {
+	.name		= "pnx8xxx-uart",
+	.id		= -1,
+	.dev = {
+		.dma_mask		= &uart_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+		.platform_data		= pnx8xxx_ports,
+	},
+	.num_resources	= ARRAY_SIZE(pnx833x_uart_resources),
+	.resource	= pnx833x_uart_resources,
+};
+
+static u64 ehci_dmamask     = DMA_32BIT_MASK;
+
+static struct resource pnx833x_usb_ehci_resources[] = {
+	[0] = {
+		.start		= PNX833X_USB_PORTS_START,
+		.end		= PNX833X_USB_PORTS_END,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= PNX833X_PIC_USB_INT,
+		.end		= PNX833X_PIC_USB_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device pnx833x_usb_ehci_device = {
+	.name		= "pnx833x-ehci",
+	.id		= -1,
+	.dev = {
+		.dma_mask		= &ehci_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+	},
+	.num_resources	= ARRAY_SIZE(pnx833x_usb_ehci_resources),
+	.resource	= pnx833x_usb_ehci_resources,
+};
+
+#ifdef CONFIG_I2C_PNX0105
+static struct resource pnx833x_i2c0_resources[] = {
+	{
+		.start		= PNX833X_I2C0_PORTS_START,
+		.end		= PNX833X_I2C0_PORTS_END,
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= PNX833X_PIC_I2C0_INT,
+		.end		= PNX833X_PIC_I2C0_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct resource pnx833x_i2c1_resources[] = {
+	{
+		.start		= PNX833X_I2C1_PORTS_START,
+		.end		= PNX833X_I2C1_PORTS_END,
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= PNX833X_PIC_I2C1_INT,
+		.end		= PNX833X_PIC_I2C1_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct i2c_pnx0105_dev pnx833x_i2c_dev[] = {
+	{
+		.base = PNX833X_I2C0_PORTS_START,
+		.irq = -1, /* should be PNX833X_PIC_I2C0_INT but polling is faster */
+		.clock = 6,	/* 0 == 400 kHz, 4 == 100 kHz(Maximum HDMI), 6 = 50kHz(Prefered HDCP) */
+		.bus_addr = 0,	/* no slave support */
+	},
+	{
+		.base = PNX833X_I2C1_PORTS_START,
+		.irq = -1,	/* on high freq, polling is faster */
+		/*.irq = PNX833X_PIC_I2C1_INT,*/
+		.clock = 4,	/* 0 == 400 kHz, 4 == 100 kHz. 100 kHz seems a safe default for now */
+		.bus_addr = 0,	/* no slave support */
+	},
+};
+
+static struct platform_device pnx833x_i2c0_device = {
+	.name		= "i2c-pnx0105",
+	.id		= 0,
+	.dev = {
+		.platform_data = &pnx833x_i2c_dev[0],
+	},
+	.num_resources  = ARRAY_SIZE(pnx833x_i2c0_resources),
+	.resource	= pnx833x_i2c0_resources,
+};
+
+static struct platform_device pnx833x_i2c1_device = {
+	.name		= "i2c-pnx0105",
+	.id		= 1,
+	.dev = {
+		.platform_data = &pnx833x_i2c_dev[1],
+	},
+	.num_resources  = ARRAY_SIZE(pnx833x_i2c1_resources),
+	.resource	= pnx833x_i2c1_resources,
+};
+#endif
+
+static u64 ethernet_dmamask = DMA_32BIT_MASK;
+
+static struct resource pnx833x_ethernet_resources[] = {
+	[0] = {
+		.start = PNX8335_IP3902_PORTS_START,
+		.end   = PNX8335_IP3902_PORTS_END,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = PNX8335_PIC_ETHERNET_INT,
+		.end   = PNX8335_PIC_ETHERNET_INT,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device pnx833x_ethernet_device = {
+	.name = "ip3902-eth",
+	.id   = -1,
+	.dev  = {
+		.dma_mask          = &ethernet_dmamask,
+		.coherent_dma_mask = DMA_32BIT_MASK,
+	},
+	.num_resources = ARRAY_SIZE(pnx833x_ethernet_resources),
+	.resource      = pnx833x_ethernet_resources,
+};
+
+static struct resource pnx833x_sata_resources[] = {
+	[0] = {
+		.start = PNX8335_SATA_PORTS_START,
+		.end   = PNX8335_SATA_PORTS_END,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = PNX8335_PIC_SATA_INT,
+		.end   = PNX8335_PIC_SATA_INT,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device pnx833x_sata_device = {
+	.name          = "pnx833x-sata",
+	.id            = -1,
+	.num_resources = ARRAY_SIZE(pnx833x_sata_resources),
+	.resource      = pnx833x_sata_resources,
+};
+
+static const char *part_probes[] = {
+	"cmdlinepart",
+	NULL
+};
+
+static void
+pnx833x_flash_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+{
+	struct nand_chip *this = mtd->priv;
+	unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;
+
+	if (cmd == NAND_CMD_NONE)
+		return;
+
+	if (ctrl & NAND_CLE)
+		writeb(cmd, (void __iomem *)(nandaddr + PNX8335_NAND_CLE_MASK));
+	else
+		writeb(cmd, (void __iomem *)(nandaddr + PNX8335_NAND_ALE_MASK));
+}
+
+static struct platform_nand_data pnx833x_flash_nand_data = {
+	.chip = {
+		.chip_delay		= 25,
+		.part_probe_types 	= part_probes,
+	},
+	.ctrl = {
+		.cmd_ctrl 		= pnx833x_flash_nand_cmd_ctrl
+	}
+};
+
+/*
+ * Set start to be the correct address (PNX8335_NAND_BASE with no 0xb!!),
+ * 12 bytes more seems to be the standard that allows for NAND access.
+ */
+static struct resource pnx833x_flash_nand_resource = {
+	.start 	= PNX8335_NAND_BASE,
+	.end 	= PNX8335_NAND_BASE + 12,
+	.flags 	= IORESOURCE_MEM,
+};
+
+static struct platform_device pnx833x_flash_nand = {
+	.name	        = "gen_nand",
+	.id		        = -1,
+	.num_resources	= 1,
+	.resource	    = &pnx833x_flash_nand_resource,
+	.dev            = {
+		.platform_data = &pnx833x_flash_nand_data,
+	},
+};
+
+static struct platform_device *pnx833x_platform_devices[] __initdata = {
+	&pnx833x_uart_device,
+	&pnx833x_usb_ehci_device,
+#ifdef CONFIG_I2C_PNX0105
+	&pnx833x_i2c0_device,
+	&pnx833x_i2c1_device,
+#endif
+	&pnx833x_ethernet_device,
+	&pnx833x_sata_device,
+	&pnx833x_flash_nand,
+};
+
+static int __init pnx833x_platform_init(void)
+{
+	int res;
+
+	res = platform_add_devices(pnx833x_platform_devices,
+				   ARRAY_SIZE(pnx833x_platform_devices));
+
+	return res;
+}
+
+arch_initcall(pnx833x_platform_init);

arch/mips/nxp/pnx833x/common/prom.c

+/*
+ *  prom.c:
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.com>
+ *
+ *  Based on software written by:
+ *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/init.h>
+#include <asm/bootinfo.h>
+#include <linux/string.h>
+
+void __init prom_init_cmdline(void)
+{
+	int argc = fw_arg0;
+	char **argv = (char **)fw_arg1;
+	char *c = &(arcs_cmdline[0]);
+	int i;
+
+	for (i = 1; i < argc; i++) {
+		strcpy(c, argv[i]);
+		c += strlen(argv[i]);
+		if (i < argc-1)
+			*c++ = ' ';
+	}
+	*c = 0;
+}
+
+char __init *prom_getenv(char *envname)
+{
+	extern char **prom_envp;
+	char **env = prom_envp;
+	int i;
+
+	i = strlen(envname);
+
+	while (*env) {
+		if (strncmp(envname, *env, i) == 0 && *(*env+i) == '=')
+			return *env + i + 1;
+		env++;
+	}
+
+	return 0;
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+char * __init prom_getcmdline(void)
+{
+	return arcs_cmdline;
+}
+

arch/mips/nxp/pnx833x/common/reset.c

+/*
+ *  reset.c: reset support for PNX833X.
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.com>
+ *
+ *  Based on software written by:
+ *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/slab.h>
+#include <linux/reboot.h>
+#include <pnx833x.h>
+
+void pnx833x_machine_restart(char *command)
+{
+	PNX833X_RESET_CONTROL_2 = 0;
+	PNX833X_RESET_CONTROL = 0;
+}
+
+void pnx833x_machine_halt(void)
+{
+	while (1)
+		__asm__ __volatile__ ("wait");
+
+}
+
+void pnx833x_machine_power_off(void)
+{
+	pnx833x_machine_halt();
+}

arch/mips/nxp/pnx833x/common/setup.c

+/*
+ *  setup.c: Setup PNX833X Soc.
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.com>
+ *
+ *  Based on software written by:
+ *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/pci.h>
+#include <asm/reboot.h>
+#include <pnx833x.h>
+#include <gpio.h>
+
+extern void pnx833x_board_setup(void);
+extern void pnx833x_machine_restart(char *);
+extern void pnx833x_machine_halt(void);
+extern void pnx833x_machine_power_off(void);
+
+int __init plat_mem_setup(void)
+{
+	/* fake pci bus to avoid bounce buffers */
+	PCI_DMA_BUS_IS_PHYS = 1;
+
+	/* set mips clock to 320MHz */
+#if defined(CONFIG_SOC_PNX8335)
+	PNX8335_WRITEFIELD(0x17, CLOCK_PLL_CPU_CTL, FREQ);
+#endif
+	pnx833x_gpio_init();	/* so it will be ready in board_setup() */
+
+	pnx833x_board_setup();
+
+	_machine_restart = pnx833x_machine_restart;
+	_machine_halt = pnx833x_machine_halt;
+	pm_power_off = pnx833x_machine_power_off;
+
+	/* IO/MEM resources. */
+	set_io_port_base(KSEG1);
+	ioport_resource.start = 0;
+	ioport_resource.end = ~0;
+	iomem_resource.start = 0;
+	iomem_resource.end = ~0;
+
+	return 0;
+}

arch/mips/nxp/pnx833x/stb22x/Makefile

+lib-y := board.o
+
+EXTRA_CFLAGS += -Werror

arch/mips/nxp/pnx833x/stb22x/board.c

+/*
+ *  board.c: STB225 board support.
+ *
+ *  Copyright 2008 NXP Semiconductors
+ *	  Chris Steel <chris.steel@nxp.com>
+ *    Daniel Laird <daniel.j.laird@nxp.com>
+ *
+ *  Based on software written by:
+ *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/init.h>
+#include <asm/bootinfo.h>
+#include <linux/mm.h>
+#include <pnx833x.h>
+#include <gpio.h>
+
+/* endianess twiddlers */
+#define PNX8335_DEBUG0 0x4400
+#define PNX8335_DEBUG1 0x4404
+#define PNX8335_DEBUG2 0x4408
+#define PNX8335_DEBUG3 0x440c
+#define PNX8335_DEBUG4 0x4410
+#define PNX8335_DEBUG5 0x4414
+#define PNX8335_DEBUG6 0x4418
+#define PNX8335_DEBUG7 0x441c
+
+int prom_argc;
+char **prom_argv = 0, **prom_envp = 0;
+
+extern void prom_init_cmdline(void);
+extern char *prom_getenv(char *envname);
+
+const char *get_system_type(void)
+{
+	return "NXP STB22x";
+}
+
+static inline unsigned long env_or_default(char *env, unsigned long dfl)
+{
+	char *str = prom_getenv(env);
+	return str ? simple_strtol(str, 0, 0) : dfl;
+}
+
+void __init prom_init(void)
+{
+	unsigned long memsize;
+
+	prom_argc = fw_arg0;
+	prom_argv = (char **)fw_arg1;
+	prom_envp = (char **)fw_arg2;
+
+	prom_init_cmdline();
+
+	memsize = env_or_default("memsize", 0x02000000);
+	add_memory_region(0, memsize, BOOT_MEM_RAM);
+}
+
+void __init pnx833x_board_setup(void)
+{
+	pnx833x_gpio_select_function_alt(4);
+	pnx833x_gpio_select_output(4);
+	pnx833x_gpio_select_function_alt(5);
+	pnx833x_gpio_select_input(5);
+	pnx833x_gpio_select_function_alt(6);
+	pnx833x_gpio_select_input(6);
+	pnx833x_gpio_select_function_alt(7);
+	pnx833x_gpio_select_output(7);
+
+	pnx833x_gpio_select_function_alt(25);
+	pnx833x_gpio_select_function_alt(26);
+
+	pnx833x_gpio_select_function_alt(27);
+	pnx833x_gpio_select_function_alt(28);
+	pnx833x_gpio_select_function_alt(29);
+	pnx833x_gpio_select_function_alt(30);
+	pnx833x_gpio_select_function_alt(31);
+	pnx833x_gpio_select_function_alt(32);
+	pnx833x_gpio_select_function_alt(33);
+
+#if defined(CONFIG_MTD_NAND_PLATFORM) || defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
+	/* Setup MIU for NAND access on CS0...
+	 *
+	 * (it seems that we must also configure CS1 for reliable operation,
+	 * otherwise the first read ID command will fail if it's read as 4 bytes
+	 * but pass if it's read as 1 word.)
+	 */
+
+	/* Setup MIU CS0 & CS1 timing */
+	PNX833X_MIU_SEL0 = 0;
+	PNX833X_MIU_SEL1 = 0;
+	PNX833X_MIU_SEL0_TIMING = 0x50003081;
+	PNX833X_MIU_SEL1_TIMING = 0x50003081;
+
+	/* Setup GPIO 00 for use as MIU CS1 (CS0 is not multiplexed, so does not need this) */
+	pnx833x_gpio_select_function_alt(0);
+
+	/* Setup GPIO 04 to input NAND read/busy signal */
+	pnx833x_gpio_select_function_io(4);
+	pnx833x_gpio_select_input(4);
+
+	/* Setup GPIO 05 to disable NAND write protect */
+	pnx833x_gpio_select_function_io(5);
+	pnx833x_gpio_select_output(5);
+	pnx833x_gpio_write(1, 5);
+
+#elif defined(CONFIG_MTD_CFI) || defined(CONFIG_MTD_CFI_MODULE)
+
+	/* Set up MIU for 16-bit NOR access on CS0 and CS1... */
+
+	/* Setup MIU CS0 & CS1 timing */
+	PNX833X_MIU_SEL0 = 1;
+	PNX833X_MIU_SEL1 = 1;
+	PNX833X_MIU_SEL0_TIMING = 0x6A08D082;
+	PNX833X_MIU_SEL1_TIMING = 0x6A08D082;
+
+	/* Setup GPIO 00 for use as MIU CS1 (CS0 is not multiplexed, so does not need this) */
+	pnx833x_gpio_select_function_alt(0);
+#endif
+}