1 /* SPDX-License-Identifier: GPL-2.0+ */
5 * based on previous work by
10 * Configuration settings for the AT91RM9200EK board.
13 #ifndef __AT91RM9200EK_CONFIG_H__
14 #define __AT91RM9200EK_CONFIG_H__
16 #include <linux/sizes.h>
19 * set some initial configurations depending on configure target
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
26 #define CONFIG_SKIP_LOWLEVEL_INIT
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
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)
43 /* CPU configuration */
44 #define CONFIG_AT91RM9200
45 #define CONFIG_AT91RM9200EK
48 #include <asm/hardware.h> /* needed for port definitions */
50 #define CONFIG_CMDLINE_TAG
51 #define CONFIG_SETUP_MEMORY_TAGS
52 #define CONFIG_INITRD_TAG
55 * Memory Configuration
57 #define CONFIG_SYS_SDRAM_BASE 0x20000000
58 #define CONFIG_SYS_SDRAM_SIZE SZ_32M
63 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
64 #define CONFIG_SYS_USE_MAIN_OSCILLATOR
66 #define CONFIG_SYS_EBI_CFGR_VAL 0x00000000
67 #define CONFIG_SYS_SMC_CSR0_VAL 0x00003284 /* 16bit, 2 TDF, 4 WS */
70 #define CONFIG_SYS_PLLAR_VAL 0x20263E04 /* 179.712000 MHz for PCK */
71 #define CONFIG_SYS_PLLBR_VAL 0x10483E0E /* 48.054857 MHz (divider by 2 for USB) */
72 /* PCK/3 = MCK Master Clock = 59.904000MHz from PLLA */
73 #define CONFIG_SYS_MCKR_VAL 0x00000202
76 #define CONFIG_SYS_PIOC_ASR_VAL 0xFFFF0000 /* Configure PIOC as peripheral (D16/D31) */
77 #define CONFIG_SYS_PIOC_BSR_VAL 0x00000000
78 #define CONFIG_SYS_PIOC_PDR_VAL 0xFFFF0000
79 #define CONFIG_SYS_EBI_CSA_VAL 0x00000002 /* CS1=CONFIG_SYS_SDRAM */
80 #define CONFIG_SYS_SDRC_CR_VAL 0x2188c155 /* set up the CONFIG_SYS_SDRAM */
81 #define CONFIG_SYS_SDRAM CONFIG_SYS_SDRAM_BASE /* address of the SDRAM */
82 #define CONFIG_SYS_SDRAM1 (CONFIG_SYS_SDRAM_BASE+0x80)
83 #define CONFIG_SYS_SDRAM_VAL 0x00000000 /* value written to CONFIG_SYS_SDRAM */
84 #define CONFIG_SYS_SDRC_MR_VAL 0x00000002 /* Precharge All */
85 #define CONFIG_SYS_SDRC_MR_VAL1 0x00000004 /* refresh */
86 #define CONFIG_SYS_SDRC_MR_VAL2 0x00000003 /* Load Mode Register */
87 #define CONFIG_SYS_SDRC_MR_VAL3 0x00000000 /* Normal Mode */
88 #define CONFIG_SYS_SDRC_TR_VAL 0x000002E0 /* Write refresh rate */
89 #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
95 * Choose a USART for serial console
96 * CONFIG_DBGU is DBGU unit on J10
97 * CONFIG_USART1 is USART1 on J14
99 #define CONFIG_ATMEL_USART
100 #define CONFIG_USART_BASE ATMEL_BASE_DBGU
101 #define CONFIG_USART_ID 0/* ignored in arm */
104 * Command line configuration.
108 * Network Driver Setting
110 #define CONFIG_DRIVER_AT91EMAC
111 #define CONFIG_SYS_RX_ETH_BUFFER 16
117 #define CONFIG_SYS_FLASH_BASE 0x10000000
118 #define PHYS_FLASH_1 CONFIG_SYS_FLASH_BASE
119 #define PHYS_FLASH_SIZE SZ_8M
120 #define CONFIG_SYS_MAX_FLASH_BANKS 1
121 #define CONFIG_SYS_MAX_FLASH_SECT 256
126 #define CONFIG_USB_ATMEL 1
127 #define CONFIG_USB_ATMEL_CLK_SEL_PLLB
128 #define CONFIG_USB_OHCI_NEW 1
130 #define CONFIG_SYS_USB_OHCI_CPU_INIT 1
131 #define CONFIG_SYS_USB_OHCI_REGS_BASE ATMEL_USB_HOST_BASE
132 #define CONFIG_SYS_USB_OHCI_SLOT_NAME "at91rm9200"
133 #define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS 15
136 * Environment Settings
143 /* The following #defines are needed to get flash environment right */
144 #define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE
145 #define CONFIG_SYS_MONITOR_LEN SZ_256K
151 /* default load address */
152 #define CONFIG_SYS_LOAD_ADDR CONFIG_SYS_SDRAM_BASE + SZ_16M
153 #define CONFIG_ENV_OVERWRITE
160 * Size of malloc() pool
162 #define CONFIG_SYS_MALLOC_LEN ROUND(3 * CONFIG_ENV_SIZE + SZ_128K, \
165 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + SZ_4K \
166 - GENERATED_GBL_DATA_SIZE)
168 #endif /* __AT91RM9200EK_CONFIG_H__ */