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git.ipfire.org Git - people/ms/u-boot.git/blob - board/cm5200/cm5200.c
2 * (C) Copyright 2003-2007
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
8 * (C) Copyright 2004-2005
9 * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
11 * Adapted to U-Boot 1.2 by:
12 * Bartlomiej Sieka <tur@semihalf.com>:
13 * - HW ID readout from EEPROM
15 * Grzegorz Bernacki <gjb@semihalf.com>:
16 * - run-time SDRAM controller configuration
19 * See file CREDITS for list of people who contributed to this
22 * This program is free software; you can redistribute it and/or
23 * modify it under the terms of the GNU General Public License as
24 * published by the Free Software Foundation; either version 2 of
25 * the License, or (at your option) any later version.
27 * This program is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU General Public License for more details.
32 * You should have received a copy of the GNU General Public License
33 * along with this program; if not, write to the Free Software
34 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
41 #include <asm/processor.h>
43 #include <linux/ctype.h>
45 #ifdef CONFIG_OF_LIBFDT
47 #include <fdt_support.h>
48 #endif /* CONFIG_OF_LIBFDT */
54 DECLARE_GLOBAL_DATA_PTR
;
59 #ifndef CONFIG_SYS_RAMBOOT
61 * Helper function to initialize SDRAM controller.
63 static void sdram_start(int hi_addr
, mem_conf_t
*mem_conf
)
65 long hi_addr_bit
= hi_addr
? 0x01000000 : 0;
67 /* unlock mode register */
68 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000000 |
71 /* precharge all banks */
72 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000002 |
76 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000004 |
79 /* auto refresh, second time */
80 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000004 |
83 /* set mode register */
84 *(vu_long
*)MPC5XXX_SDRAM_MODE
= mem_conf
->mode
;
86 /* normal operation */
87 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| hi_addr_bit
;
89 #endif /* CONFIG_SYS_RAMBOOT */
93 * Retrieve memory configuration for a given module. board_type is the index
94 * in hw_id_list[] corresponding to the module we are executing on; we return
95 * SDRAM controller settings approprate for this module.
97 static mem_conf_t
* get_mem_config(int board_type
)
101 return memory_config
[0];
104 return memory_config
[1];
106 printf("ERROR: Unknown module, using a default SDRAM "
107 "configuration - things may not work!!!.\n");
108 return memory_config
[0];
114 * Initalize SDRAM - configure SDRAM controller, detect memory size.
116 phys_size_t
initdram(int board_type
)
119 #ifndef CONFIG_SYS_RAMBOOT
121 mem_conf_t
*mem_conf
;
123 mem_conf
= get_mem_config(board_type
);
125 /* configure SDRAM start/end for detection */
126 *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
= 0x0000001e; /* 2G at 0x0 */
128 /* setup config registers */
129 *(vu_long
*)MPC5XXX_SDRAM_CONFIG1
= mem_conf
->config1
;
130 *(vu_long
*)MPC5XXX_SDRAM_CONFIG2
= mem_conf
->config2
;
132 sdram_start(0, mem_conf
);
133 test1
= get_ram_size((long *)CONFIG_SYS_SDRAM_BASE
, 0x80000000);
134 sdram_start(1, mem_conf
);
135 test2
= get_ram_size((long *)CONFIG_SYS_SDRAM_BASE
, 0x80000000);
137 sdram_start(0, mem_conf
);
142 /* memory smaller than 1MB is impossible */
143 if (dramsize
< (1 << 20))
146 /* set SDRAM CS0 size according to the amount of RAM found */
148 *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
= 0x13 +
149 __builtin_ffs(dramsize
>> 20) - 1;
151 *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
= 0; /* disabled */
152 #else /* CONFIG_SYS_RAMBOOT */
153 /* retrieve size of memory connected to SDRAM CS0 */
154 dramsize
= *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
& 0xFF;
155 if (dramsize
>= 0x13)
156 dramsize
= (1 << (dramsize
- 0x13)) << 20;
159 #endif /* !CONFIG_SYS_RAMBOOT */
162 * On MPC5200B we need to set the special configuration delay in the
163 * DDR controller. Refer to chapter 8.7.5 SDelay--MBAR + 0x0190 of
164 * the MPC5200B User's Manual.
166 *(vu_long
*)MPC5XXX_SDRAM_SDELAY
= 0x04;
167 __asm__
volatile ("sync");
174 * Read module hardware identification data from the I2C EEPROM.
176 static void read_hw_id(hw_id_t hw_id
)
179 for (i
= 0; i
< HW_ID_ELEM_COUNT
; ++i
)
180 if (i2c_read(CONFIG_SYS_I2C_EEPROM
,
181 hw_id_format
[i
].offset
,
183 (uchar
*)&hw_id
[i
][0],
184 hw_id_format
[i
].length
) != 0)
185 printf("ERROR: can't read HW ID from EEPROM\n");
190 * Identify module we are running on, set gd->board_type to the index in
191 * hw_id_list[] corresponding to the module identifed, or to
192 * CM5200_UNKNOWN_MODULE if we can't identify the module.
194 static void identify_module(hw_id_t hw_id
)
198 gd
->board_type
= CM5200_UNKNOWN_MODULE
;
199 for (i
= 0; i
< sizeof (hw_id_list
) / sizeof (char **); ++i
) {
201 for (j
= 0; j
< sizeof (hw_id_identify
) / sizeof (int); ++j
) {
202 element
= hw_id_identify
[j
];
203 if (strncmp(hw_id_list
[i
][element
],
205 hw_id_format
[element
].length
) != 0) {
219 * Compose string with module name.
220 * buf is assumed to have enough space, and be null-terminated.
222 static void compose_module_name(hw_id_t hw_id
, char *buf
)
224 char tmp
[MODULE_NAME_MAXLEN
];
225 strncat(buf
, &hw_id
[PCB_NAME
][0], hw_id_format
[PCB_NAME
].length
);
226 strncat(buf
, ".", 1);
227 strncat(buf
, &hw_id
[FORM
][0], hw_id_format
[FORM
].length
);
228 strncat(buf
, &hw_id
[VERSION
][0], hw_id_format
[VERSION
].length
);
229 strncat(buf
, " (", 2);
230 strncat(buf
, &hw_id
[IDENTIFICATION_NUMBER
][0],
231 hw_id_format
[IDENTIFICATION_NUMBER
].length
);
232 sprintf(tmp
, " / %u.%u)",
233 hw_id
[MAJOR_SW_VERSION
][0],
234 hw_id
[MINOR_SW_VERSION
][0]);
240 * Compose string with hostname.
241 * buf is assumed to have enough space, and be null-terminated.
243 static void compose_hostname(hw_id_t hw_id
, char *buf
)
246 strncat(buf
, &hw_id
[PCB_NAME
][0], hw_id_format
[PCB_NAME
].length
);
247 strncat(buf
, "_", 1);
248 strncat(buf
, &hw_id
[FORM
][0], hw_id_format
[FORM
].length
);
249 strncat(buf
, &hw_id
[VERSION
][0], hw_id_format
[VERSION
].length
);
250 for (p
= buf
; *p
; ++p
)
256 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
258 * Update 'model' and 'memory' properties in the blob according to the module
259 * that we are running on.
261 static void ft_blob_update(void *blob
, bd_t
*bd
)
263 int len
, ret
, nodeoffset
= 0;
264 char module_name
[MODULE_NAME_MAXLEN
] = {0};
266 compose_module_name(hw_id
, module_name
);
267 len
= strlen(module_name
) + 1;
269 ret
= fdt_setprop(blob
, nodeoffset
, "model", module_name
, len
);
271 printf("ft_blob_update(): cannot set /model property err:%s\n",
274 #endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
278 * Read HW ID from I2C EEPROM and detect the modue we are running on. Note
279 * that we need to use local variable for readout, because global data is not
280 * writable yet (and we'll have to redo the readout later on).
285 char module_name_tmp
[MODULE_NAME_MAXLEN
] = "";
288 * We need I2C to access HW ID data from EEPROM, so we call i2c_init()
289 * here despite the fact that it will be called again later on. We
290 * also use a little trick to silence I2C-related output.
292 gd
->flags
|= GD_FLG_SILENT
;
293 i2c_init (CONFIG_SYS_I2C_SPEED
, CONFIG_SYS_I2C_SLAVE
);
294 gd
->flags
&= ~GD_FLG_SILENT
;
296 read_hw_id(hw_id_tmp
);
297 identify_module(hw_id_tmp
); /* this sets gd->board_type */
298 compose_module_name(hw_id_tmp
, module_name_tmp
);
300 if (gd
->board_type
!= CM5200_UNKNOWN_MODULE
)
301 printf("Board: %s\n", module_name_tmp
);
303 printf("Board: unrecognized cm5200 module (%s)\n",
310 int board_early_init_r(void)
313 * Now, when we are in RAM, enable flash write access for detection
314 * process. Note that CS_BOOT cannot be cleared when executing in
317 *(vu_long
*)MPC5XXX_BOOTCS_CFG
&= ~0x1; /* clear RO */
319 /* Now that we can write to global data, read HW ID again. */
325 #ifdef CONFIG_MISC_INIT_R
326 int misc_init_r(void)
328 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
331 char hostname
[MODULE_NAME_MAXLEN
];
333 /* Read ethaddr from EEPROM */
334 if (i2c_read(CONFIG_SYS_I2C_EEPROM
, CONFIG_MAC_OFFSET
, 2, buf
, 6) == 0) {
335 sprintf(str
, "%02X:%02X:%02X:%02X:%02X:%02X",
336 buf
[0], buf
[1], buf
[2], buf
[3], buf
[4], buf
[5]);
337 /* Check if MAC addr is owned by Schindler */
338 if (strstr(str
, "00:06:C3") != str
)
339 printf(LOG_PREFIX
"Warning - Illegal MAC address (%s)"
340 " in EEPROM.\n", str
);
342 printf(LOG_PREFIX
"Using MAC (%s) from I2C EEPROM\n",
344 setenv("ethaddr", str
);
347 printf(LOG_PREFIX
"Warning - Unable to read MAC from I2C"
348 " device at address %02X:%04X\n", CONFIG_SYS_I2C_EEPROM
,
351 #endif /* defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) */
352 if (!getenv("ethaddr"))
353 printf(LOG_PREFIX
"MAC address not set, networking is not "
356 /* set the hostname appropriate to the module we're running on */
358 compose_hostname(hw_id
, hostname
);
359 setenv("hostname", hostname
);
363 #endif /* CONFIG_MISC_INIT_R */
366 #ifdef CONFIG_LAST_STAGE_INIT
367 int last_stage_init(void)
369 #ifdef CONFIG_USB_STORAGE
371 #endif /* CONFIG_USB_STORAGE */
374 #endif /* CONFIG_LAST_STAGE_INIT */
377 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
378 void ft_board_setup(void *blob
, bd_t
*bd
)
380 ft_cpu_setup(blob
, bd
);
381 ft_blob_update(blob
, bd
);
383 #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */