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