/* SPDX-License-Identifier: GPL-2.0 */
|
/*
|
* 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 <linux/platform_data/eth_ixp4xx.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;
|
};
|
|
/*
|
* 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__
|
