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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 <libfdt_env.h>
48 #include <fdt_support.h>
49 #endif /* CONFIG_OF_LIBFDT */
55 DECLARE_GLOBAL_DATA_PTR
;
60 #ifndef CONFIG_SYS_RAMBOOT
62 * Helper function to initialize SDRAM controller.
64 static void sdram_start(int hi_addr
, mem_conf_t
*mem_conf
)
66 long hi_addr_bit
= hi_addr
? 0x01000000 : 0;
68 /* unlock mode register */
69 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000000 |
72 /* precharge all banks */
73 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000002 |
77 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000004 |
80 /* auto refresh, second time */
81 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000004 |
84 /* set mode register */
85 *(vu_long
*)MPC5XXX_SDRAM_MODE
= mem_conf
->mode
;
87 /* normal operation */
88 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| hi_addr_bit
;
90 #endif /* CONFIG_SYS_RAMBOOT */
94 * Retrieve memory configuration for a given module. board_type is the index
95 * in hw_id_list[] corresponding to the module we are executing on; we return
96 * SDRAM controller settings approprate for this module.
98 static mem_conf_t
* get_mem_config(int board_type
)
102 return memory_config
[0];
105 return memory_config
[1];
107 printf("ERROR: Unknown module, using a default SDRAM "
108 "configuration - things may not work!!!.\n");
109 return memory_config
[0];
115 * Initalize SDRAM - configure SDRAM controller, detect memory size.
117 phys_size_t
initdram(int board_type
)
120 #ifndef CONFIG_SYS_RAMBOOT
122 mem_conf_t
*mem_conf
;
124 mem_conf
= get_mem_config(board_type
);
126 /* configure SDRAM start/end for detection */
127 *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
= 0x0000001e; /* 2G at 0x0 */
129 /* setup config registers */
130 *(vu_long
*)MPC5XXX_SDRAM_CONFIG1
= mem_conf
->config1
;
131 *(vu_long
*)MPC5XXX_SDRAM_CONFIG2
= mem_conf
->config2
;
133 sdram_start(0, mem_conf
);
134 test1
= get_ram_size((long *)CONFIG_SYS_SDRAM_BASE
, 0x80000000);
135 sdram_start(1, mem_conf
);
136 test2
= get_ram_size((long *)CONFIG_SYS_SDRAM_BASE
, 0x80000000);
138 sdram_start(0, mem_conf
);
143 /* memory smaller than 1MB is impossible */
144 if (dramsize
< (1 << 20))
147 /* set SDRAM CS0 size according to the amount of RAM found */
149 *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
= 0x13 +
150 __builtin_ffs(dramsize
>> 20) - 1;
152 *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
= 0; /* disabled */
153 #else /* CONFIG_SYS_RAMBOOT */
154 /* retrieve size of memory connected to SDRAM CS0 */
155 dramsize
= *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
& 0xFF;
156 if (dramsize
>= 0x13)
157 dramsize
= (1 << (dramsize
- 0x13)) << 20;
160 #endif /* !CONFIG_SYS_RAMBOOT */
163 * On MPC5200B we need to set the special configuration delay in the
164 * DDR controller. Refer to chapter 8.7.5 SDelay--MBAR + 0x0190 of
165 * the MPC5200B User's Manual.
167 *(vu_long
*)MPC5XXX_SDRAM_SDELAY
= 0x04;
168 __asm__
volatile ("sync");
175 * Read module hardware identification data from the I2C EEPROM.
177 static void read_hw_id(hw_id_t hw_id
)
180 for (i
= 0; i
< HW_ID_ELEM_COUNT
; ++i
)
181 if (i2c_read(CONFIG_SYS_I2C_EEPROM
,
182 hw_id_format
[i
].offset
,
184 (uchar
*)&hw_id
[i
][0],
185 hw_id_format
[i
].length
) != 0)
186 printf("ERROR: can't read HW ID from EEPROM\n");
191 * Identify module we are running on, set gd->board_type to the index in
192 * hw_id_list[] corresponding to the module identifed, or to
193 * CM5200_UNKNOWN_MODULE if we can't identify the module.
195 static void identify_module(hw_id_t hw_id
)
199 gd
->board_type
= CM5200_UNKNOWN_MODULE
;
200 for (i
= 0; i
< sizeof (hw_id_list
) / sizeof (char **); ++i
) {
202 for (j
= 0; j
< sizeof (hw_id_identify
) / sizeof (int); ++j
) {
203 element
= hw_id_identify
[j
];
204 if (strncmp(hw_id_list
[i
][element
],
206 hw_id_format
[element
].length
) != 0) {
220 * Compose string with module name.
221 * buf is assumed to have enough space, and be null-terminated.
223 static void compose_module_name(hw_id_t hw_id
, char *buf
)
225 char tmp
[MODULE_NAME_MAXLEN
];
226 strncat(buf
, &hw_id
[PCB_NAME
][0], hw_id_format
[PCB_NAME
].length
);
227 strncat(buf
, ".", 1);
228 strncat(buf
, &hw_id
[FORM
][0], hw_id_format
[FORM
].length
);
229 strncat(buf
, &hw_id
[VERSION
][0], hw_id_format
[VERSION
].length
);
230 strncat(buf
, " (", 2);
231 strncat(buf
, &hw_id
[IDENTIFICATION_NUMBER
][0],
232 hw_id_format
[IDENTIFICATION_NUMBER
].length
);
233 sprintf(tmp
, " / %u.%u)",
234 hw_id
[MAJOR_SW_VERSION
][0],
235 hw_id
[MINOR_SW_VERSION
][0]);
241 * Compose string with hostname.
242 * buf is assumed to have enough space, and be null-terminated.
244 static void compose_hostname(hw_id_t hw_id
, char *buf
)
247 strncat(buf
, &hw_id
[PCB_NAME
][0], hw_id_format
[PCB_NAME
].length
);
248 strncat(buf
, "_", 1);
249 strncat(buf
, &hw_id
[FORM
][0], hw_id_format
[FORM
].length
);
250 strncat(buf
, &hw_id
[VERSION
][0], hw_id_format
[VERSION
].length
);
251 for (p
= buf
; *p
; ++p
)
257 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
259 * Update 'model' and 'memory' properties in the blob according to the module
260 * that we are running on.
262 static void ft_blob_update(void *blob
, bd_t
*bd
)
264 int len
, ret
, nodeoffset
= 0;
265 char module_name
[MODULE_NAME_MAXLEN
] = {0};
267 compose_module_name(hw_id
, module_name
);
268 len
= strlen(module_name
) + 1;
270 ret
= fdt_setprop(blob
, nodeoffset
, "model", module_name
, len
);
272 printf("ft_blob_update(): cannot set /model property err:%s\n",
275 #endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
279 * Read HW ID from I2C EEPROM and detect the modue we are running on. Note
280 * that we need to use local variable for readout, because global data is not
281 * writable yet (and we'll have to redo the readout later on).
286 char module_name_tmp
[MODULE_NAME_MAXLEN
] = "";
289 * We need I2C to access HW ID data from EEPROM, so we call i2c_init()
290 * here despite the fact that it will be called again later on. We
291 * also use a little trick to silence I2C-related output.
293 gd
->flags
|= GD_FLG_SILENT
;
294 i2c_init (CONFIG_SYS_I2C_SPEED
, CONFIG_SYS_I2C_SLAVE
);
295 gd
->flags
&= ~GD_FLG_SILENT
;
297 read_hw_id(hw_id_tmp
);
298 identify_module(hw_id_tmp
); /* this sets gd->board_type */
299 compose_module_name(hw_id_tmp
, module_name_tmp
);
301 if (gd
->board_type
!= CM5200_UNKNOWN_MODULE
)
302 printf("Board: %s\n", module_name_tmp
);
304 printf("Board: unrecognized cm5200 module (%s)\n",
311 int board_early_init_r(void)
314 * Now, when we are in RAM, enable flash write access for detection
315 * process. Note that CS_BOOT cannot be cleared when executing in
318 *(vu_long
*)MPC5XXX_BOOTCS_CFG
&= ~0x1; /* clear RO */
320 /* Now that we can write to global data, read HW ID again. */
326 #ifdef CONFIG_MISC_INIT_R
327 int misc_init_r(void)
329 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
332 char hostname
[MODULE_NAME_MAXLEN
];
334 /* Read ethaddr from EEPROM */
335 if (i2c_read(CONFIG_SYS_I2C_EEPROM
, CONFIG_MAC_OFFSET
, 2, buf
, 6) == 0) {
336 sprintf(str
, "%02X:%02X:%02X:%02X:%02X:%02X",
337 buf
[0], buf
[1], buf
[2], buf
[3], buf
[4], buf
[5]);
338 /* Check if MAC addr is owned by Schindler */
339 if (strstr(str
, "00:06:C3") != str
)
340 printf(LOG_PREFIX
"Warning - Illegal MAC address (%s)"
341 " in EEPROM.\n", str
);
343 printf(LOG_PREFIX
"Using MAC (%s) from I2C EEPROM\n",
345 setenv("ethaddr", str
);
348 printf(LOG_PREFIX
"Warning - Unable to read MAC from I2C"
349 " device at address %02X:%04X\n", CONFIG_SYS_I2C_EEPROM
,
352 #endif /* defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) */
353 if (!getenv("ethaddr"))
354 printf(LOG_PREFIX
"MAC address not set, networking is not "
357 /* set the hostname appropriate to the module we're running on */
359 compose_hostname(hw_id
, hostname
);
360 setenv("hostname", hostname
);
364 #endif /* CONFIG_MISC_INIT_R */
367 #ifdef CONFIG_LAST_STAGE_INIT
368 int last_stage_init(void)
370 #ifdef CONFIG_USB_STORAGE
372 #endif /* CONFIG_USB_STORAGE */
375 #endif /* CONFIG_LAST_STAGE_INIT */
378 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
379 void ft_board_setup(void *blob
, bd_t
*bd
)
381 ft_cpu_setup(blob
, bd
);
382 ft_blob_update(blob
, bd
);
384 #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */