- /*
- * include/asm-arm/arch-ixp4xx/platform.h
- *
- * Constants and functions that are useful to IXP4xx platform-specific code
- * and device drivers.
- *
- * Copyright (C) 2004 MontaVista Software, Inc.
- */
- #ifndef __ASM_ARCH_HARDWARE_H__
- #error "Do not include this directly, instead #include <asm/hardware.h>"
- #endif
- #ifndef __ASSEMBLY__
- #include <asm/types.h>
- #ifndef __ARMEB__
- #define REG_OFFSET 0
- #else
- #define REG_OFFSET 3
- #endif
- /*
- * Expansion bus memory regions
- */
- #define IXP4XX_EXP_BUS_BASE_PHYS (0x50000000)
- #define IXP4XX_EXP_BUS_CSX_REGION_SIZE (0x01000000)
- #define IXP4XX_EXP_BUS_CS0_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x00000000)
- #define IXP4XX_EXP_BUS_CS1_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x01000000)
- #define IXP4XX_EXP_BUS_CS2_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x02000000)
- #define IXP4XX_EXP_BUS_CS3_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x03000000)
- #define IXP4XX_EXP_BUS_CS4_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x04000000)
- #define IXP4XX_EXP_BUS_CS5_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x05000000)
- #define IXP4XX_EXP_BUS_CS6_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x06000000)
- #define IXP4XX_EXP_BUS_CS7_BASE_PHYS (IXP4XX_EXP_BUS_BASE_PHYS + 0x07000000)
- #define IXP4XX_FLASH_WRITABLE (0x2)
- #define IXP4XX_FLASH_DEFAULT (0xbcd23c40)
- #define IXP4XX_FLASH_WRITE (0xbcd23c42)
- /*
- * Clock Speed Definitions.
- */
- #define IXP4XX_PERIPHERAL_BUS_CLOCK (66) /* 66Mhzi APB BUS */
- #define IXP4XX_UART_XTAL 14745600
- /*
- * The IXP4xx chips do not have an I2C unit, so GPIO lines are just
- * used to
- * Used as platform_data to provide GPIO pin information to the ixp42x
- * I2C driver.
- */
- struct ixp4xx_i2c_pins {
- unsigned long sda_pin;
- unsigned long scl_pin;
- };
- struct sys_timer;
- /*
- * Functions used by platform-level setup code
- */
- extern void ixp4xx_map_io(void);
- extern void ixp4xx_init_irq(void);
- extern void ixp4xx_sys_init(void);
- extern struct sys_timer ixp4xx_timer;
- extern void ixp4xx_pci_preinit(void);
- struct pci_sys_data;
- extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
- extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys);
- /*
- * GPIO-functions
- */
- /*
- * The following converted to the real HW bits the gpio_line_config
- */
- /* GPIO pin types */
- #define IXP4XX_GPIO_OUT 0x1
- #define IXP4XX_GPIO_IN 0x2
- /* GPIO signal types */
- #define IXP4XX_GPIO_LOW 0
- #define IXP4XX_GPIO_HIGH 1
- /* GPIO Clocks */
- #define IXP4XX_GPIO_CLK_0 14
- #define IXP4XX_GPIO_CLK_1 15
- static inline void gpio_line_config(u8 line, u32 direction)
- {
- if (direction == IXP4XX_GPIO_IN)
- *IXP4XX_GPIO_GPOER |= (1 << line);
- else
- *IXP4XX_GPIO_GPOER &= ~(1 << line);
- }
- static inline void gpio_line_get(u8 line, int *value)
- {
- *value = (*IXP4XX_GPIO_GPINR >> line) & 0x1;
- }
- static inline void gpio_line_set(u8 line, int value)
- {
- if (value == IXP4XX_GPIO_HIGH)
- *IXP4XX_GPIO_GPOUTR |= (1 << line);
- else if (value == IXP4XX_GPIO_LOW)
- *IXP4XX_GPIO_GPOUTR &= ~(1 << line);
- }
- static inline void gpio_line_isr_clear(u8 line)
- {
- *IXP4XX_GPIO_GPISR = (1 << line);
- }
- #endif // __ASSEMBLY__