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/*
* arch/arm/mach-ixp4xx/include/mach/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 <mach/hardware.h>"
#endif
#ifndef __ASSEMBLY__
#include <linux/reboot.h>
#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)
/*
* The expansion bus on the IXP4xx can be configured for either 16 or
* 32MB windows and the CS offset for each region changes based on the
* current configuration. This means that we cannot simply hardcode
* each offset. ixp4xx_sys_init() looks at the expansion bus configuration
* as setup by the bootloader to determine our window size.
*/
extern unsigned long ixp4xx_exp_bus_size;
#define IXP4XX_EXP_BUS_BASE(region)\
(IXP4XX_EXP_BUS_BASE_PHYS + ((region) * ixp4xx_exp_bus_size))
#define IXP4XX_EXP_BUS_END(region)\
(IXP4XX_EXP_BUS_BASE(region) + ixp4xx_exp_bus_size - 1)
/* Those macros can be used to adjust timing and configure
* other features for each region.
*/
#define IXP4XX_EXP_BUS_RECOVERY_T(x) (((x) & 0x0f) << 16)
#define IXP4XX_EXP_BUS_HOLD_T(x) (((x) & 0x03) << 20)
#define IXP4XX_EXP_BUS_STROBE_T(x) (((x) & 0x0f) << 22)
#define IXP4XX_EXP_BUS_SETUP_T(x) (((x) & 0x03) << 26)
#define IXP4XX_EXP_BUS_ADDR_T(x) (((x) & 0x03) << 28)
#define IXP4XX_EXP_BUS_SIZE(x) (((x) & 0x0f) << 10)
#define IXP4XX_EXP_BUS_CYCLES(x) (((x) & 0x03) << 14)
#define IXP4XX_EXP_BUS_CS_EN (1L << 31)
#define IXP4XX_EXP_BUS_BYTE_RD16 (1L << 6)
#define IXP4XX_EXP_BUS_HRDY_POL (1L << 5)
#define IXP4XX_EXP_BUS_MUX_EN (1L << 4)
#define IXP4XX_EXP_BUS_SPLT_EN (1L << 3)
#define IXP4XX_EXP_BUS_WR_EN (1L << 1)
#define IXP4XX_EXP_BUS_BYTE_EN (1L << 0)
#define IXP4XX_EXP_BUS_CYCLES_INTEL 0x00
#define IXP4XX_EXP_BUS_CYCLES_MOTOROLA 0x01
#define IXP4XX_EXP_BUS_CYCLES_HPI 0x02
#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
/*
* This structure provide a means for the board setup code
* to give information to th pata_ixp4xx driver. It is
* passed as platform_data.
*/
struct ixp4xx_pata_data {
volatile u32 *cs0_cfg;
volatile u32 *cs1_cfg;
unsigned long cs0_bits;
unsigned long cs1_bits;
void __iomem *cs0;
void __iomem *cs1;
};
#define IXP4XX_ETH_NPEA 0x00
#define IXP4XX_ETH_NPEB 0x10
#define IXP4XX_ETH_NPEC 0x20
/* Information about built-in Ethernet MAC interfaces */
struct eth_plat_info {
u8 phy; /* MII PHY ID, 0 - 31 */
u8 rxq; /* configurable, currently 0 - 31 only */
u8 txreadyq;
u8 hwaddr[6];
};
/* Information about built-in HSS (synchronous serial) interfaces */
struct hss_plat_info {
int (*set_clock)(int port, unsigned int clock_type);
int (*open)(int port, void *pdev,
void (*set_carrier_cb)(void *pdev, int carrier));
void (*close)(int port, void *pdev);
u8 txreadyq;
};
/*
* Frequency of clock used for primary clocksource
*/
extern unsigned long ixp4xx_timer_freq;
/*
* Functions used by platform-level setup code
*/
extern void ixp4xx_map_io(void);
extern void ixp4xx_init_early(void);
extern void ixp4xx_init_irq(void);
extern void ixp4xx_sys_init(void);
extern void ixp4xx_timer_init(void);
extern void ixp4xx_restart(enum reboot_mode, const char *);
extern void ixp4xx_pci_preinit(void);
struct pci_sys_data;
extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
extern struct pci_ops ixp4xx_ops;
#endif // __ASSEMBLY__