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) */