1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * arch/arm/mach-ixp4xx/include/mach/platform.h 4 * 5 * Constants and functions that are useful to IXP4xx platform-specific code 6 * and device drivers. 7 * 8 * Copyright (C) 2004 MontaVista Software, Inc. 9 */ 10 11 #ifndef __ASM_ARCH_HARDWARE_H__ 12 #error "Do not include this directly, instead #include <mach/hardware.h>" 13 #endif 14 15 #ifndef __ASSEMBLY__ 16 17 #include <linux/reboot.h> 18 19 #include <asm/types.h> 20 21 #ifndef __ARMEB__ 22 #define REG_OFFSET 0 23 #else 24 #define REG_OFFSET 3 25 #endif 26 27 /* 28 * Expansion bus memory regions 29 */ 30 #define IXP4XX_EXP_BUS_BASE_PHYS (0x50000000) 31 32 /* 33 * The expansion bus on the IXP4xx can be configured for either 16 or 34 * 32MB windows and the CS offset for each region changes based on the 35 * current configuration. This means that we cannot simply hardcode 36 * each offset. ixp4xx_sys_init() looks at the expansion bus configuration 37 * as setup by the bootloader to determine our window size. 38 */ 39 extern unsigned long ixp4xx_exp_bus_size; 40 41 #define IXP4XX_EXP_BUS_BASE(region)\ 42 (IXP4XX_EXP_BUS_BASE_PHYS + ((region) * ixp4xx_exp_bus_size)) 43 44 #define IXP4XX_EXP_BUS_END(region)\ 45 (IXP4XX_EXP_BUS_BASE(region) + ixp4xx_exp_bus_size - 1) 46 47 /* Those macros can be used to adjust timing and configure 48 * other features for each region. 49 */ 50 51 #define IXP4XX_EXP_BUS_RECOVERY_T(x) (((x) & 0x0f) << 16) 52 #define IXP4XX_EXP_BUS_HOLD_T(x) (((x) & 0x03) << 20) 53 #define IXP4XX_EXP_BUS_STROBE_T(x) (((x) & 0x0f) << 22) 54 #define IXP4XX_EXP_BUS_SETUP_T(x) (((x) & 0x03) << 26) 55 #define IXP4XX_EXP_BUS_ADDR_T(x) (((x) & 0x03) << 28) 56 #define IXP4XX_EXP_BUS_SIZE(x) (((x) & 0x0f) << 10) 57 #define IXP4XX_EXP_BUS_CYCLES(x) (((x) & 0x03) << 14) 58 59 #define IXP4XX_EXP_BUS_CS_EN (1L << 31) 60 #define IXP4XX_EXP_BUS_BYTE_RD16 (1L << 6) 61 #define IXP4XX_EXP_BUS_HRDY_POL (1L << 5) 62 #define IXP4XX_EXP_BUS_MUX_EN (1L << 4) 63 #define IXP4XX_EXP_BUS_SPLT_EN (1L << 3) 64 #define IXP4XX_EXP_BUS_WR_EN (1L << 1) 65 #define IXP4XX_EXP_BUS_BYTE_EN (1L << 0) 66 67 #define IXP4XX_EXP_BUS_CYCLES_INTEL 0x00 68 #define IXP4XX_EXP_BUS_CYCLES_MOTOROLA 0x01 69 #define IXP4XX_EXP_BUS_CYCLES_HPI 0x02 70 71 #define IXP4XX_FLASH_WRITABLE (0x2) 72 #define IXP4XX_FLASH_DEFAULT (0xbcd23c40) 73 #define IXP4XX_FLASH_WRITE (0xbcd23c42) 74 75 /* 76 * Clock Speed Definitions. 77 */ 78 #define IXP4XX_PERIPHERAL_BUS_CLOCK (66) /* 66MHzi APB BUS */ 79 #define IXP4XX_UART_XTAL 14745600 80 81 /* 82 * This structure provide a means for the board setup code 83 * to give information to th pata_ixp4xx driver. It is 84 * passed as platform_data. 85 */ 86 struct ixp4xx_pata_data { 87 volatile u32 *cs0_cfg; 88 volatile u32 *cs1_cfg; 89 unsigned long cs0_bits; 90 unsigned long cs1_bits; 91 void __iomem *cs0; 92 void __iomem *cs1; 93 }; 94 95 #define IXP4XX_ETH_NPEA 0x00 96 #define IXP4XX_ETH_NPEB 0x10 97 #define IXP4XX_ETH_NPEC 0x20 98 99 /* Information about built-in Ethernet MAC interfaces */ 100 struct eth_plat_info { 101 u8 phy; /* MII PHY ID, 0 - 31 */ 102 u8 rxq; /* configurable, currently 0 - 31 only */ 103 u8 txreadyq; 104 u8 hwaddr[6]; 105 }; 106 107 /* Information about built-in HSS (synchronous serial) interfaces */ 108 struct hss_plat_info { 109 int (*set_clock)(int port, unsigned int clock_type); 110 int (*open)(int port, void *pdev, 111 void (*set_carrier_cb)(void *pdev, int carrier)); 112 void (*close)(int port, void *pdev); 113 u8 txreadyq; 114 }; 115 116 /* 117 * Frequency of clock used for primary clocksource 118 */ 119 extern unsigned long ixp4xx_timer_freq; 120 121 /* 122 * Functions used by platform-level setup code 123 */ 124 extern void ixp4xx_map_io(void); 125 extern void ixp4xx_init_early(void); 126 extern void ixp4xx_init_irq(void); 127 extern void ixp4xx_sys_init(void); 128 extern void ixp4xx_timer_init(void); 129 extern void ixp4xx_restart(enum reboot_mode, const char *); 130 extern void ixp4xx_pci_preinit(void); 131 struct pci_sys_data; 132 extern int ixp4xx_setup(int nr, struct pci_sys_data *sys); 133 extern struct pci_ops ixp4xx_ops; 134 135 #endif // __ASSEMBLY__ 136 137
