1 /* 2 * arch/arm/mach-ixp4xx/include/mach/platform.h 3 * 4 * Constants and functions that are useful to IXP4xx platform-specific code 5 * and device drivers. 6 * 7 * Copyright (C) 2004 MontaVista Software, Inc. 8 */ 9 10 #ifndef __ASM_ARCH_HARDWARE_H__ 11 #error "Do not include this directly, instead #include <mach/hardware.h>" 12 #endif 13 14 #ifndef __ASSEMBLY__ 15 16 #include <linux/reboot.h> 17 18 #include <asm/types.h> 19 20 #ifndef __ARMEB__ 21 #define REG_OFFSET 0 22 #else 23 #define REG_OFFSET 3 24 #endif 25 26 /* 27 * Expansion bus memory regions 28 */ 29 #define IXP4XX_EXP_BUS_BASE_PHYS (0x50000000) 30 31 /* 32 * The expansion bus on the IXP4xx can be configured for either 16 or 33 * 32MB windows and the CS offset for each region changes based on the 34 * current configuration. This means that we cannot simply hardcode 35 * each offset. ixp4xx_sys_init() looks at the expansion bus configuration 36 * as setup by the bootloader to determine our window size. 37 */ 38 extern unsigned long ixp4xx_exp_bus_size; 39 40 #define IXP4XX_EXP_BUS_BASE(region)\ 41 (IXP4XX_EXP_BUS_BASE_PHYS + ((region) * ixp4xx_exp_bus_size)) 42 43 #define IXP4XX_EXP_BUS_END(region)\ 44 (IXP4XX_EXP_BUS_BASE(region) + ixp4xx_exp_bus_size - 1) 45 46 /* Those macros can be used to adjust timing and configure 47 * other features for each region. 48 */ 49 50 #define IXP4XX_EXP_BUS_RECOVERY_T(x) (((x) & 0x0f) << 16) 51 #define IXP4XX_EXP_BUS_HOLD_T(x) (((x) & 0x03) << 20) 52 #define IXP4XX_EXP_BUS_STROBE_T(x) (((x) & 0x0f) << 22) 53 #define IXP4XX_EXP_BUS_SETUP_T(x) (((x) & 0x03) << 26) 54 #define IXP4XX_EXP_BUS_ADDR_T(x) (((x) & 0x03) << 28) 55 #define IXP4XX_EXP_BUS_SIZE(x) (((x) & 0x0f) << 10) 56 #define IXP4XX_EXP_BUS_CYCLES(x) (((x) & 0x03) << 14) 57 58 #define IXP4XX_EXP_BUS_CS_EN (1L << 31) 59 #define IXP4XX_EXP_BUS_BYTE_RD16 (1L << 6) 60 #define IXP4XX_EXP_BUS_HRDY_POL (1L << 5) 61 #define IXP4XX_EXP_BUS_MUX_EN (1L << 4) 62 #define IXP4XX_EXP_BUS_SPLT_EN (1L << 3) 63 #define IXP4XX_EXP_BUS_WR_EN (1L << 1) 64 #define IXP4XX_EXP_BUS_BYTE_EN (1L << 0) 65 66 #define IXP4XX_EXP_BUS_CYCLES_INTEL 0x00 67 #define IXP4XX_EXP_BUS_CYCLES_MOTOROLA 0x01 68 #define IXP4XX_EXP_BUS_CYCLES_HPI 0x02 69 70 #define IXP4XX_FLASH_WRITABLE (0x2) 71 #define IXP4XX_FLASH_DEFAULT (0xbcd23c40) 72 #define IXP4XX_FLASH_WRITE (0xbcd23c42) 73 74 /* 75 * Clock Speed Definitions. 76 */ 77 #define IXP4XX_PERIPHERAL_BUS_CLOCK (66) /* 66Mhzi APB BUS */ 78 #define IXP4XX_UART_XTAL 14745600 79 80 /* 81 * This structure provide a means for the board setup code 82 * to give information to th pata_ixp4xx driver. It is 83 * passed as platform_data. 84 */ 85 struct ixp4xx_pata_data { 86 volatile u32 *cs0_cfg; 87 volatile u32 *cs1_cfg; 88 unsigned long cs0_bits; 89 unsigned long cs1_bits; 90 void __iomem *cs0; 91 void __iomem *cs1; 92 }; 93 94 #define IXP4XX_ETH_NPEA 0x00 95 #define IXP4XX_ETH_NPEB 0x10 96 #define IXP4XX_ETH_NPEC 0x20 97 98 /* Information about built-in Ethernet MAC interfaces */ 99 struct eth_plat_info { 100 u8 phy; /* MII PHY ID, 0 - 31 */ 101 u8 rxq; /* configurable, currently 0 - 31 only */ 102 u8 txreadyq; 103 u8 hwaddr[6]; 104 }; 105 106 /* Information about built-in HSS (synchronous serial) interfaces */ 107 struct hss_plat_info { 108 int (*set_clock)(int port, unsigned int clock_type); 109 int (*open)(int port, void *pdev, 110 void (*set_carrier_cb)(void *pdev, int carrier)); 111 void (*close)(int port, void *pdev); 112 u8 txreadyq; 113 }; 114 115 /* 116 * Frequency of clock used for primary clocksource 117 */ 118 extern unsigned long ixp4xx_timer_freq; 119 120 /* 121 * Functions used by platform-level setup code 122 */ 123 extern void ixp4xx_map_io(void); 124 extern void ixp4xx_init_early(void); 125 extern void ixp4xx_init_irq(void); 126 extern void ixp4xx_sys_init(void); 127 extern void ixp4xx_timer_init(void); 128 extern void ixp4xx_restart(enum reboot_mode, const char *); 129 extern void ixp4xx_pci_preinit(void); 130 struct pci_sys_data; 131 extern int ixp4xx_setup(int nr, struct pci_sys_data *sys); 132 extern struct pci_ops ixp4xx_ops; 133 134 #endif // __ASSEMBLY__ 135 136