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rm9200 lowevel_init: don't touch reserved/readonly registers
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1 /*
2 * Ulf Samuelsson <ulf@atmel.com>
3 * Rick Bronson <rick@efn.org>
4 *
5 * Configuration settings for the AT91RM9200EK board.
6 *
7 * See file CREDITS for list of people who contributed to this
8 * project.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23 * MA 02111-1307 USA
24 */
25
26 #ifndef __CONFIG_H
27 #define __CONFIG_H
28
29 /* ARM asynchronous clock */
30 /*
31 * from 18.432 MHz crystal
32 * (18432000 / 4 * 39)
33 */
34 #define AT91C_MAIN_CLOCK 179712000
35 /*
36 * peripheral clock
37 * (AT91C_MASTER_CLOCK / 3)
38 */
39 #define AT91C_MASTER_CLOCK 59904000
40
41 #define AT91_SLOW_CLOCK 32768 /* slow clock */
42
43 #define CONFIG_ARM920T 1 /* This is an ARM920T Core */
44 #define CONFIG_AT91RM9200 1 /* It's an Atmel AT91RM9200 SoC */
45 #define CONFIG_AT91RM9200EK 1 /* on an AT91RM9200EK Board */
46 #undef CONFIG_USE_IRQ /* we don't need IRQ/FIQ stuff */
47 #define USE_920T_MMU 1
48
49 #define CONFIG_CMDLINE_TAG 1 /* enable passing of ATAGs */
50 #define CONFIG_SETUP_MEMORY_TAGS 1
51 #define CONFIG_INITRD_TAG 1
52
53 /*
54 * LowLevel Init
55 */
56 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
57 #define CONFIG_SYS_USE_MAIN_OSCILLATOR 1
58 /* flash */
59 #define CONFIG_SYS_EBI_CFGR_VAL 0x00000000
60 #define CONFIG_SYS_SMC_CSR0_VAL 0x00003284 /* 16bit, 2 TDF, 4 WS */
61
62 /* clocks */
63 #define CONFIG_SYS_PLLAR_VAL 0x20263E04 /* 179.712000 MHz for PCK */
64 #define CONFIG_SYS_PLLBR_VAL 0x10483E0E /* 48.054857 MHz (divider by 2 for USB) */
65 /* PCK/3 = MCK Master Clock = 59.904000MHz from PLLA */
66 #define CONFIG_SYS_MCKR_VAL 0x00000202
67
68 /* sdram */
69 #define CONFIG_SYS_PIOC_ASR_VAL 0xFFFF0000 /* Configure PIOC as peripheral (D16/D31) */
70 #define CONFIG_SYS_PIOC_BSR_VAL 0x00000000
71 #define CONFIG_SYS_PIOC_PDR_VAL 0xFFFF0000
72 #define CONFIG_SYS_EBI_CSA_VAL 0x00000002 /* CS1=CONFIG_SYS_SDRAM */
73 #define CONFIG_SYS_SDRC_CR_VAL 0x2188c155 /* set up the CONFIG_SYS_SDRAM */
74 #define CONFIG_SYS_SDRAM 0x20000000 /* address of the CONFIG_SYS_SDRAM */
75 #define CONFIG_SYS_SDRAM1 0x20000080 /* address of the CONFIG_SYS_SDRAM */
76 #define CONFIG_SYS_SDRAM_VAL 0x00000000 /* value written to CONFIG_SYS_SDRAM */
77 #define CONFIG_SYS_SDRC_MR_VAL 0x00000002 /* Precharge All */
78 #define CONFIG_SYS_SDRC_MR_VAL1 0x00000004 /* refresh */
79 #define CONFIG_SYS_SDRC_MR_VAL2 0x00000003 /* Load Mode Register */
80 #define CONFIG_SYS_SDRC_MR_VAL3 0x00000000 /* Normal Mode */
81 #define CONFIG_SYS_SDRC_TR_VAL 0x000002E0 /* Write refresh rate */
82 #else
83 #define CONFIG_SKIP_RELOCATE_UBOOT
84 #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
85
86 /* hardcode so no __divsi3 : AT91C_MASTER_CLOCK / baudrate / 16 */
87 #define CONFIG_SYS_AT91C_BRGR_DIVISOR 33
88
89 /*
90 * Memory Configuration
91 */
92 #define CONFIG_NR_DRAM_BANKS 1
93 #define PHYS_SDRAM 0x20000000
94 #define PHYS_SDRAM_SIZE 0x02000000 /* 32 megs */
95
96 #define CONFIG_SYS_MEMTEST_START PHYS_SDRAM
97 #define CONFIG_SYS_MEMTEST_END \
98 (CONFIG_SYS_MEMTEST_START + PHYS_SDRAM_SIZE - 262144)
99
100 /*
101 * Hardware drivers
102 */
103
104 /*
105 * UART Configuration
106 *
107 * define one of these to choose the DBGU,
108 * USART0 or USART1 as console
109 */
110 #define CONFIG_AT91RM9200_USART
111 #define CONFIG_DBGU
112 #undef CONFIG_USART0
113 #undef CONFIG_USART1
114 /* don't include RTS/CTS flow control support */
115 #undef CONFIG_HWFLOW
116 /* disable modem initialization stuff */
117 #undef CONFIG_MODEM_SUPPORT
118
119 #define CONFIG_SYS_BAUDRATE_TABLE {115200 , 19200, 38400, 57600, 9600 }
120 #define CONFIG_BAUDRATE 115200
121
122 /*
123 * Command line configuration.
124 */
125 #include <config_cmd_default.h>
126
127 #define CONFIG_CMD_DHCP
128 #define CONFIG_CMD_FAT
129 #define CONFIG_CMD_MII
130 #define CONFIG_CMD_PING
131
132 #undef CONFIG_CMD_BDI
133 #undef CONFIG_CMD_IMI
134 #undef CONFIG_CMD_FPGA
135 #undef CONFIG_CMD_MISC
136 #undef CONFIG_CMD_LOADS
137
138 #include <asm/arch/AT91RM9200.h> /* needed for port definitions */
139 /* Options for MMC/SD Card */
140 #define CONFIG_DOS_PARTITION 1
141 #undef CONFIG_MMC
142 #define CONFIG_SYS_MMC_BASE 0xFFFB4000
143 #define CONFIG_SYS_MMC_BLOCKSIZE 512
144
145 /*
146 * Network Driver Setting
147 */
148 #define CONFIG_DRIVER_ETHER
149 #define CONFIG_NET_RETRY_COUNT 20
150 #define CONFIG_AT91C_USE_RMII
151
152 /*
153 * AC Characteristics
154 * DLYBS = tCSS = 250ns min and DLYBCT = tCSH = 250ns
155 */
156 #define DATAFLASH_TCSS (0xC << 16)
157 #define DATAFLASH_TCHS (0x1 << 24)
158
159 #if defined(CONFIG_HAS_DATAFLASH)
160 #define CONFIG_SYS_SPI_WRITE_TOUT (5 * CONFIG_SYS_HZ)
161 #define CONFIG_SYS_MAX_DATAFLASH_BANKS 2
162 #define CONFIG_SYS_MAX_DATAFLASH_PAGES 16384
163 /* Logical adress for CS0 */
164 #define CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS0 0xC0000000
165 /* Logical adress for CS3 */
166 #define CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS3 0xD0000000
167 #define CONFIG_SYS_SUPPORT_BLOCK_ERASE 1
168 #define CONFIG_SYS_DATAFLASH_MMC_PIO AT91C_PIO_PB22
169 #endif
170
171 /*
172 * NOR Flash
173 */
174 #define CONFIG_SYS_FLASH_BASE 0x10000000
175 #define PHYS_FLASH_SIZE 0x800000 /* 8MB */
176 #define CONFIG_SYS_FLASH_CFI 1
177 #define CONFIG_FLASH_CFI_DRIVER 1
178 #define CONFIG_SYS_MAX_FLASH_BANKS 1
179 #define CONFIG_SYS_MAX_FLASH_SECT 256
180 #define CONFIG_SYS_FLASH_PROTECTION
181
182 /*
183 * Environment Settings
184 */
185 #ifdef CONFIG_ENV_IS_IN_DATAFLASH
186 /*
187 * Datasflash Environment Settings
188 */
189 #define CONFIG_ENV_OFFSET 0x4200
190 #define CONFIG_ENV_ADDR \
191 (CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS0 + CONFIG_ENV_OFFSET)
192 /* 8 * 1056 really , but start.s is not OK with this*/
193 #define CONFIG_ENV_SIZE 0x2000
194
195 #else
196 /*
197 * NOR Flash Environment Settings
198 */
199 #define CONFIG_ENV_IS_IN_FLASH 1
200
201 #ifdef CONFIG_SKIP_LOWLEVEL_INIT
202 /*
203 * between boot.bin and u-boot.bin.gz
204 */
205 #define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + 0xe000)
206 #define CONFIG_ENV_SIZE 0x10000 /* sectors are 64K here */
207 #else
208 /*
209 * after u-boot.bin
210 */
211 #define CONFIG_ENV_ADDR \
212 (CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_LEN)
213 #define CONFIG_ENV_SIZE 0x10000 /* sectors are 64K here */
214 /* The following #defines are needed to get flash environment right */
215 #define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE
216 #define CONFIG_SYS_MONITOR_LEN \
217 (CONFIG_SYS_BOOT_SIZE + CONFIG_SYS_U_BOOT_SIZE)
218 #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
219
220 #endif /* CONFIG_ENV_IS_IN_DATAFLASH */
221
222 /*
223 * Boot option
224 */
225 #define CONFIG_BOOTDELAY 3
226
227 #ifdef CONFIG_SKIP_LOWLEVEL_INIT
228 /* boot.bin, env, u-boot.bin.gz */
229 #define CONFIG_SYS_BOOT_SIZE 0x6000 /* 24 KBytes */
230 #define CONFIG_SYS_U_BOOT_BASE (CONFIG_SYS_FLASH_BASE + 0x10000)
231 #define CONFIG_SYS_U_BOOT_SIZE 0x10000 /* 64 KBytes */
232 #else
233 /* u-boot.bin */
234 #define CONFIG_SYS_BOOT_SIZE 0x0 /* 0 KBytes */
235 #define CONFIG_SYS_U_BOOT_BASE CONFIG_SYS_FLASH_BASE
236 #define CONFIG_SYS_U_BOOT_SIZE 0x40000 /* 128 KBytes */
237 #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
238
239 #define CONFIG_SYS_LOAD_ADDR 0x21000000 /* default load address */
240 #define CONFIG_ENV_OVERWRITE 1
241
242 /*
243 * USB Config
244 */
245 #define CONFIG_CMD_USB
246 #define CONFIG_USB_OHCI_NEW 1
247 #define CONFIG_USB_KEYBOARD 1
248 #define CONFIG_USB_STORAGE 1
249 #define CONFIG_DOS_PARTITION 1
250
251 #undef CONFIG_SYS_USB_OHCI_BOARD_INIT
252 #define CONFIG_SYS_USB_OHCI_CPU_INIT 1
253 #define CONFIG_SYS_USB_OHCI_REGS_BASE AT91_USB_HOST_BASE
254 #define CONFIG_SYS_USB_OHCI_SLOT_NAME "at91rm9200"
255 #define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS 15
256
257 /*
258 * I2C
259 */
260 #define CONFIG_HARD_I2C
261
262 #ifdef CONFIG_HARD_I2C
263 #define CONFIG_CMD_I2C
264 #define CONFIG_SYS_I2C_SPEED 0 /* not used */
265 #define CONFIG_SYS_I2C_SLAVE 0 /* not used */
266 #endif
267
268 /*
269 * Shell Settings
270 */
271 #define CONFIG_CMDLINE_EDITING 1
272 #define CONFIG_SYS_LONGHELP 1
273 #define CONFIG_AUTO_COMPLETE 1
274 #define CONFIG_SYS_HUSH_PARSER 1
275 #define CONFIG_SYS_PROMPT "U-Boot> "
276 #define CONFIG_SYS_PROMPT_HUSH_PS2 "> "
277 #define CONFIG_SYS_CBSIZE 256 /* Console I/O Buffer Size */
278 #define CONFIG_SYS_MAXARGS 16 /* max number of command args */
279 /* Print Buffer Size */
280 #define CONFIG_SYS_PBSIZE \
281 (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
282
283 #ifndef __ASSEMBLY__
284 /*-----------------------------------------------------------------------
285 * Board specific extension for bd_info
286 *
287 * This structure is embedded in the global bd_info (bd_t) structure
288 * and can be used by the board specific code (eg board/...)
289 */
290
291 struct bd_info_ext {
292 /* helper variable for board environment handling
293 *
294 * env_crc_valid == 0 => uninitialised
295 * env_crc_valid > 0 => environment crc in flash is valid
296 * env_crc_valid < 0 => environment crc in flash is invalid
297 */
298 int env_crc_valid;
299 };
300 #endif
301
302 #define CONFIG_SYS_HZ 1000
303 /*
304 * AT91C_TC0_CMR is implicitly set to
305 * AT91C_TC_TIMER_DIV1_CLOCK
306 */
307 #define CONFIG_SYS_HZ_CLOCK (AT91C_MASTER_CLOCK / 2)
308
309 /*
310 * Size of malloc() pool
311 */
312 #define CONFIG_SYS_MALLOC_LEN ROUND(3 * CONFIG_ENV_SIZE + 128 * 1024 \
313 , 0x1000)
314 /* size in bytes reserved for initial data */
315 #define CONFIG_SYS_GBL_DATA_SIZE 128
316
317 #define CONFIG_STACKSIZE (32 * 1024) /* regular stack */
318 #define CONFIG_STACKSIZE_IRQ (4 * 1024) /* Unsure if to big or to small*/
319 #define CONFIG_STACKSIZE_FIQ (4 * 1024) /* Unsure if to big or to small*/
320 #endif