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git.ipfire.org Git - thirdparty/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 * SPDX-License-Identifier: GPL-2.0+
25 #include <asm/processor.h>
27 #include <linux/ctype.h>
29 #ifdef CONFIG_OF_LIBFDT
31 #include <fdt_support.h>
32 #endif /* CONFIG_OF_LIBFDT */
38 DECLARE_GLOBAL_DATA_PTR
;
43 #ifndef CONFIG_SYS_RAMBOOT
45 * Helper function to initialize SDRAM controller.
47 static void sdram_start(int hi_addr
, mem_conf_t
*mem_conf
)
49 long hi_addr_bit
= hi_addr
? 0x01000000 : 0;
51 /* unlock mode register */
52 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000000 |
55 /* precharge all banks */
56 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000002 |
60 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000004 |
63 /* auto refresh, second time */
64 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| 0x80000004 |
67 /* set mode register */
68 *(vu_long
*)MPC5XXX_SDRAM_MODE
= mem_conf
->mode
;
70 /* normal operation */
71 *(vu_long
*)MPC5XXX_SDRAM_CTRL
= mem_conf
->control
| hi_addr_bit
;
73 #endif /* CONFIG_SYS_RAMBOOT */
77 * Retrieve memory configuration for a given module. board_type is the index
78 * in hw_id_list[] corresponding to the module we are executing on; we return
79 * SDRAM controller settings approprate for this module.
81 static mem_conf_t
* get_mem_config(int board_type
)
85 return memory_config
[0];
88 return memory_config
[1];
90 printf("ERROR: Unknown module, using a default SDRAM "
91 "configuration - things may not work!!!.\n");
92 return memory_config
[0];
98 * Initalize SDRAM - configure SDRAM controller, detect memory size.
103 #ifndef CONFIG_SYS_RAMBOOT
105 mem_conf_t
*mem_conf
;
107 mem_conf
= get_mem_config(gd
->board_type
);
109 /* configure SDRAM start/end for detection */
110 *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
= 0x0000001e; /* 2G at 0x0 */
112 /* setup config registers */
113 *(vu_long
*)MPC5XXX_SDRAM_CONFIG1
= mem_conf
->config1
;
114 *(vu_long
*)MPC5XXX_SDRAM_CONFIG2
= mem_conf
->config2
;
116 sdram_start(0, mem_conf
);
117 test1
= get_ram_size((long *)CONFIG_SYS_SDRAM_BASE
, 0x80000000);
118 sdram_start(1, mem_conf
);
119 test2
= get_ram_size((long *)CONFIG_SYS_SDRAM_BASE
, 0x80000000);
121 sdram_start(0, mem_conf
);
126 /* memory smaller than 1MB is impossible */
127 if (dramsize
< (1 << 20))
130 /* set SDRAM CS0 size according to the amount of RAM found */
132 *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
= 0x13 +
133 __builtin_ffs(dramsize
>> 20) - 1;
135 *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
= 0; /* disabled */
136 #else /* CONFIG_SYS_RAMBOOT */
137 /* retrieve size of memory connected to SDRAM CS0 */
138 dramsize
= *(vu_long
*)MPC5XXX_SDRAM_CS0CFG
& 0xFF;
139 if (dramsize
>= 0x13)
140 dramsize
= (1 << (dramsize
- 0x13)) << 20;
143 #endif /* !CONFIG_SYS_RAMBOOT */
146 * On MPC5200B we need to set the special configuration delay in the
147 * DDR controller. Refer to chapter 8.7.5 SDelay--MBAR + 0x0190 of
148 * the MPC5200B User's Manual.
150 *(vu_long
*)MPC5XXX_SDRAM_SDELAY
= 0x04;
151 __asm__
volatile ("sync");
153 gd
->ram_size
= dramsize
;
160 * Read module hardware identification data from the I2C EEPROM.
162 static void read_hw_id(hw_id_t hw_id
)
164 printf("ERROR: can't read HW ID from EEPROM\n");
169 * Identify module we are running on, set gd->board_type to the index in
170 * hw_id_list[] corresponding to the module identifed, or to
171 * CM5200_UNKNOWN_MODULE if we can't identify the module.
173 static void identify_module(hw_id_t hw_id
)
177 gd
->board_type
= CM5200_UNKNOWN_MODULE
;
178 for (i
= 0; i
< sizeof (hw_id_list
) / sizeof (char **); ++i
) {
180 for (j
= 0; j
< sizeof (hw_id_identify
) / sizeof (int); ++j
) {
181 element
= hw_id_identify
[j
];
182 if (strncmp(hw_id_list
[i
][element
],
184 hw_id_format
[element
].length
) != 0) {
198 * Compose string with module name.
199 * buf is assumed to have enough space, and be null-terminated.
201 static void compose_module_name(hw_id_t hw_id
, char *buf
)
203 char tmp
[MODULE_NAME_MAXLEN
];
204 strncat(buf
, &hw_id
[PCB_NAME
][0], hw_id_format
[PCB_NAME
].length
);
205 strncat(buf
, ".", 1);
206 strncat(buf
, &hw_id
[FORM
][0], hw_id_format
[FORM
].length
);
207 strncat(buf
, &hw_id
[VERSION
][0], hw_id_format
[VERSION
].length
);
208 strncat(buf
, " (", 2);
209 strncat(buf
, &hw_id
[IDENTIFICATION_NUMBER
][0],
210 hw_id_format
[IDENTIFICATION_NUMBER
].length
);
211 sprintf(tmp
, " / %u.%u)",
212 hw_id
[MAJOR_SW_VERSION
][0],
213 hw_id
[MINOR_SW_VERSION
][0]);
217 #if defined(CONFIG_SYS_I2C_SOFT)
219 * Compose string with hostname.
220 * buf is assumed to have enough space, and be null-terminated.
222 static void compose_hostname(hw_id_t hw_id
, char *buf
)
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 for (p
= buf
; *p
; ++p
)
235 #ifdef CONFIG_OF_BOARD_SETUP
237 * Update 'model' and 'memory' properties in the blob according to the module
238 * that we are running on.
240 static void ft_blob_update(void *blob
, bd_t
*bd
)
242 int len
, ret
, nodeoffset
= 0;
243 char module_name
[MODULE_NAME_MAXLEN
] = {0};
245 compose_module_name(hw_id
, module_name
);
246 len
= strlen(module_name
) + 1;
248 ret
= fdt_setprop(blob
, nodeoffset
, "model", module_name
, len
);
250 printf("ft_blob_update(): cannot set /model property err:%s\n",
253 #endif /* CONFIG_OF_BOARD_SETUP */
257 * Read HW ID from I2C EEPROM and detect the modue we are running on. Note
258 * that we need to use local variable for readout, because global data is not
259 * writable yet (and we'll have to redo the readout later on).
264 char module_name_tmp
[MODULE_NAME_MAXLEN
] = "";
266 read_hw_id(hw_id_tmp
);
267 identify_module(hw_id_tmp
); /* this sets gd->board_type */
268 compose_module_name(hw_id_tmp
, module_name_tmp
);
270 if (gd
->board_type
!= CM5200_UNKNOWN_MODULE
)
271 printf("Board: %s\n", module_name_tmp
);
273 printf("Board: unrecognized cm5200 module (%s)\n",
280 int board_early_init_r(void)
283 * Now, when we are in RAM, enable flash write access for detection
284 * process. Note that CS_BOOT cannot be cleared when executing in
287 *(vu_long
*)MPC5XXX_BOOTCS_CFG
&= ~0x1; /* clear RO */
289 /* Now that we can write to global data, read HW ID again. */
295 #ifdef CONFIG_MISC_INIT_R
296 int misc_init_r(void)
298 #if defined(CONFIG_SYS_I2C_SOFT)
301 char hostname
[MODULE_NAME_MAXLEN
];
303 /* Read ethaddr from EEPROM */
304 if (i2c_read(CONFIG_SYS_I2C_EEPROM
, CONFIG_MAC_OFFSET
, 2, buf
, 6) == 0) {
305 sprintf(str
, "%02X:%02X:%02X:%02X:%02X:%02X",
306 buf
[0], buf
[1], buf
[2], buf
[3], buf
[4], buf
[5]);
307 /* Check if MAC addr is owned by Schindler */
308 if (strstr(str
, "00:06:C3") != str
)
309 printf(LOG_PREFIX
"Warning - Illegal MAC address (%s)"
310 " in EEPROM.\n", str
);
312 printf(LOG_PREFIX
"Using MAC (%s) from I2C EEPROM\n",
314 setenv("ethaddr", str
);
317 printf(LOG_PREFIX
"Warning - Unable to read MAC from I2C"
318 " device at address %02X:%04X\n", CONFIG_SYS_I2C_EEPROM
,
322 /* set the hostname appropriate to the module we're running on */
323 compose_hostname(hw_id
, hostname
);
324 setenv("hostname", hostname
);
326 #endif /* defined(CONFIG_SYS_I2C_SOFT) */
327 if (!getenv("ethaddr"))
328 printf(LOG_PREFIX
"MAC address not set, networking is not "
333 #endif /* CONFIG_MISC_INIT_R */
336 #ifdef CONFIG_LAST_STAGE_INIT
337 int last_stage_init(void)
339 #ifdef CONFIG_USB_STORAGE
341 #endif /* CONFIG_USB_STORAGE */
344 #endif /* CONFIG_LAST_STAGE_INIT */
347 #ifdef CONFIG_OF_BOARD_SETUP
348 int ft_board_setup(void *blob
, bd_t
*bd
)
350 ft_cpu_setup(blob
, bd
);
351 ft_blob_update(blob
, bd
);
355 #endif /* CONFIG_OF_BOARD_SETUP */