1 /* 2 * arch/arm/mach-at91/include/mach/hardware.h 3 * 4 * Copyright (C) 2003 SAN People 5 * Copyright (C) 2003 ATMEL 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 */ 13 14 #ifndef __ASM_ARCH_HARDWARE_H 15 #define __ASM_ARCH_HARDWARE_H 16 17 #include <asm/sizes.h> 18 19 #if defined(CONFIG_ARCH_AT91RM9200) 20 #include <mach/at91rm9200.h> 21 #elif defined(CONFIG_ARCH_AT91SAM9260) || defined(CONFIG_ARCH_AT91SAM9G20) 22 #include <mach/at91sam9260.h> 23 #elif defined(CONFIG_ARCH_AT91SAM9261) 24 #include <mach/at91sam9261.h> 25 #elif defined(CONFIG_ARCH_AT91SAM9263) 26 #include <mach/at91sam9263.h> 27 #elif defined(CONFIG_ARCH_AT91SAM9RL) 28 #include <mach/at91sam9rl.h> 29 #elif defined(CONFIG_ARCH_AT91CAP9) 30 #include <mach/at91cap9.h> 31 #elif defined(CONFIG_ARCH_AT91X40) 32 #include <mach/at91x40.h> 33 #else 34 #error "Unsupported AT91 processor" 35 #endif 36 37 38 #ifdef CONFIG_MMU 39 /* 40 * Remap the peripherals from address 0xFFF78000 .. 0xFFFFFFFF 41 * to 0xFEF78000 .. 0xFF000000. (544Kb) 42 */ 43 #define AT91_IO_PHYS_BASE 0xFFF78000 44 #define AT91_IO_VIRT_BASE (0xFF000000 - AT91_IO_SIZE) 45 #else 46 /* 47 * Identity mapping for the non MMU case. 48 */ 49 #define AT91_IO_PHYS_BASE AT91_BASE_SYS 50 #define AT91_IO_VIRT_BASE AT91_IO_PHYS_BASE 51 #endif 52 53 #define AT91_IO_SIZE (0xFFFFFFFF - AT91_IO_PHYS_BASE + 1) 54 55 /* Convert a physical IO address to virtual IO address */ 56 #define AT91_IO_P2V(x) ((x) - AT91_IO_PHYS_BASE + AT91_IO_VIRT_BASE) 57 58 /* 59 * Virtual to Physical Address mapping for IO devices. 60 */ 61 #define AT91_VA_BASE_SYS AT91_IO_P2V(AT91_BASE_SYS) 62 #define AT91_VA_BASE_EMAC AT91_IO_P2V(AT91RM9200_BASE_EMAC) 63 64 /* Internal SRAM is mapped below the IO devices */ 65 #define AT91_SRAM_MAX SZ_1M 66 #define AT91_VIRT_BASE (AT91_IO_VIRT_BASE - AT91_SRAM_MAX) 67 68 /* Serial ports */ 69 #define ATMEL_MAX_UART 7 /* 6 USART3's and one DBGU port (SAM9260) */ 70 71 /* External Memory Map */ 72 #define AT91_CHIPSELECT_0 0x10000000 73 #define AT91_CHIPSELECT_1 0x20000000 74 #define AT91_CHIPSELECT_2 0x30000000 75 #define AT91_CHIPSELECT_3 0x40000000 76 #define AT91_CHIPSELECT_4 0x50000000 77 #define AT91_CHIPSELECT_5 0x60000000 78 #define AT91_CHIPSELECT_6 0x70000000 79 #define AT91_CHIPSELECT_7 0x80000000 80 81 /* SDRAM */ 82 #ifdef CONFIG_DRAM_BASE 83 #define AT91_SDRAM_BASE CONFIG_DRAM_BASE 84 #else 85 #define AT91_SDRAM_BASE AT91_CHIPSELECT_1 86 #endif 87 88 /* Clocks */ 89 #define AT91_SLOW_CLOCK 32768 /* slow clock */ 90 91 92 #endif 93