1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2010 Andreas Bießmann <biessmann.devel@googlemail.com> 4 * 5 * based on previous work by 6 * 7 * Ulf Samuelsson <ulf@atmel.com> 8 * Rick Bronson <rick@efn.org> 9 * 10 * Configuration settings for the AT91RM9200EK board. 11 */ 12 13 #ifndef __AT91RM9200EK_CONFIG_H__ 14 #define __AT91RM9200EK_CONFIG_H__ 15 16 #include <linux/sizes.h> 17 18 /* 19 * set some initial configurations depending on configure target 20 * 21 * at91rm9200ek_config -> boot from 0x0 in NOR Flash at CS0 22 * at91rm9200ek_ram_config -> continue booting from 0x20100000 in RAM; lowlevel 23 * initialisation was done by some preloader 24 */ 25 #ifdef CONFIG_RAMBOOT 26 #define CONFIG_SKIP_LOWLEVEL_INIT 27 #endif 28 29 /* 30 * AT91C_XTAL_CLOCK is the frequency of external xtal in hertz 31 * AT91C_MAIN_CLOCK is the frequency of PLLA output 32 * AT91C_MASTER_CLOCK is the peripherial clock 33 * CONFIG_SYS_HZ_CLOCK is the value for CCR in tc0 (divider 2 is implicitely 34 * set in arch/arm/cpu/arm920t/at91/timer.c) 35 * CONFIG_SYS_HZ is the tick rate for timer tc0 36 */ 37 #define AT91C_XTAL_CLOCK 18432000 38 #define CONFIG_SYS_AT91_SLOW_CLOCK 32768 39 #define AT91C_MAIN_CLOCK ((AT91C_XTAL_CLOCK / 4) * 39) 40 #define AT91C_MASTER_CLOCK (AT91C_MAIN_CLOCK / 3 ) 41 #define CONFIG_SYS_HZ_CLOCK (AT91C_MASTER_CLOCK / 2) 42 43 /* CPU configuration */ 44 #define CONFIG_AT91RM9200 45 #define CONFIG_AT91RM9200EK 46 #define USE_920T_MMU 47 48 #include <asm/hardware.h> /* needed for port definitions */ 49 50 #define CONFIG_CMDLINE_TAG 51 #define CONFIG_SETUP_MEMORY_TAGS 52 #define CONFIG_INITRD_TAG 53 54 /* 55 * Memory Configuration 56 */ 57 #define CONFIG_SYS_SDRAM_BASE 0x20000000 58 #define CONFIG_SYS_SDRAM_SIZE SZ_32M 59 60 #define CONFIG_SYS_MEMTEST_START CONFIG_SYS_SDRAM_BASE 61 #define CONFIG_SYS_MEMTEST_END \ 62 (CONFIG_SYS_MEMTEST_START + CONFIG_SYS_SDRAM_SIZE - SZ_256K) 63 64 /* 65 * LowLevel Init 66 */ 67 #ifndef CONFIG_SKIP_LOWLEVEL_INIT 68 #define CONFIG_SYS_USE_MAIN_OSCILLATOR 69 /* flash */ 70 #define CONFIG_SYS_EBI_CFGR_VAL 0x00000000 71 #define CONFIG_SYS_SMC_CSR0_VAL 0x00003284 /* 16bit, 2 TDF, 4 WS */ 72 73 /* clocks */ 74 #define CONFIG_SYS_PLLAR_VAL 0x20263E04 /* 179.712000 MHz for PCK */ 75 #define CONFIG_SYS_PLLBR_VAL 0x10483E0E /* 48.054857 MHz (divider by 2 for USB) */ 76 /* PCK/3 = MCK Master Clock = 59.904000MHz from PLLA */ 77 #define CONFIG_SYS_MCKR_VAL 0x00000202 78 79 /* sdram */ 80 #define CONFIG_SYS_PIOC_ASR_VAL 0xFFFF0000 /* Configure PIOC as peripheral (D16/D31) */ 81 #define CONFIG_SYS_PIOC_BSR_VAL 0x00000000 82 #define CONFIG_SYS_PIOC_PDR_VAL 0xFFFF0000 83 #define CONFIG_SYS_EBI_CSA_VAL 0x00000002 /* CS1=CONFIG_SYS_SDRAM */ 84 #define CONFIG_SYS_SDRC_CR_VAL 0x2188c155 /* set up the CONFIG_SYS_SDRAM */ 85 #define CONFIG_SYS_SDRAM CONFIG_SYS_SDRAM_BASE /* address of the SDRAM */ 86 #define CONFIG_SYS_SDRAM1 (CONFIG_SYS_SDRAM_BASE+0x80) 87 #define CONFIG_SYS_SDRAM_VAL 0x00000000 /* value written to CONFIG_SYS_SDRAM */ 88 #define CONFIG_SYS_SDRC_MR_VAL 0x00000002 /* Precharge All */ 89 #define CONFIG_SYS_SDRC_MR_VAL1 0x00000004 /* refresh */ 90 #define CONFIG_SYS_SDRC_MR_VAL2 0x00000003 /* Load Mode Register */ 91 #define CONFIG_SYS_SDRC_MR_VAL3 0x00000000 /* Normal Mode */ 92 #define CONFIG_SYS_SDRC_TR_VAL 0x000002E0 /* Write refresh rate */ 93 #endif /* CONFIG_SKIP_LOWLEVEL_INIT */ 94 95 /* 96 * Hardware drivers 97 */ 98 /* 99 * Choose a USART for serial console 100 * CONFIG_DBGU is DBGU unit on J10 101 * CONFIG_USART1 is USART1 on J14 102 */ 103 #define CONFIG_ATMEL_USART 104 #define CONFIG_USART_BASE ATMEL_BASE_DBGU 105 #define CONFIG_USART_ID 0/* ignored in arm */ 106 107 /* 108 * Command line configuration. 109 */ 110 111 /* 112 * Network Driver Setting 113 */ 114 #define CONFIG_DRIVER_AT91EMAC 115 #define CONFIG_SYS_RX_ETH_BUFFER 16 116 #define CONFIG_RMII 117 118 /* 119 * NOR Flash 120 */ 121 #define CONFIG_SYS_FLASH_BASE 0x10000000 122 #define PHYS_FLASH_1 CONFIG_SYS_FLASH_BASE 123 #define PHYS_FLASH_SIZE SZ_8M 124 #define CONFIG_SYS_MAX_FLASH_BANKS 1 125 #define CONFIG_SYS_MAX_FLASH_SECT 256 126 127 /* 128 * USB Config 129 */ 130 #define CONFIG_USB_ATMEL 1 131 #define CONFIG_USB_ATMEL_CLK_SEL_PLLB 132 #define CONFIG_USB_OHCI_NEW 1 133 134 #define CONFIG_SYS_USB_OHCI_CPU_INIT 1 135 #define CONFIG_SYS_USB_OHCI_REGS_BASE ATMEL_USB_HOST_BASE 136 #define CONFIG_SYS_USB_OHCI_SLOT_NAME "at91rm9200" 137 #define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS 15 138 139 /* 140 * Environment Settings 141 */ 142 143 /* 144 * after u-boot.bin 145 */ 146 #define CONFIG_ENV_ADDR \ 147 (CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_LEN) 148 #define CONFIG_ENV_SIZE SZ_64K /* sectors are 64K here */ 149 /* The following #defines are needed to get flash environment right */ 150 #define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE 151 #define CONFIG_SYS_MONITOR_LEN SZ_256K 152 153 /* 154 * Boot option 155 */ 156 157 /* default load address */ 158 #define CONFIG_SYS_LOAD_ADDR CONFIG_SYS_SDRAM_BASE + SZ_16M 159 #define CONFIG_ENV_OVERWRITE 160 161 /* 162 * Shell Settings 163 */ 164 165 /* 166 * Size of malloc() pool 167 */ 168 #define CONFIG_SYS_MALLOC_LEN ROUND(3 * CONFIG_ENV_SIZE + SZ_128K, \ 169 SZ_4K) 170 171 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + SZ_4K \ 172 - GENERATED_GBL_DATA_SIZE) 173 174 #endif /* __AT91RM9200EK_CONFIG_H__ */ 175