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Bartlomiej Sieka86b116b2007-08-03 12:08:16 +02001/*
2 * (C) Copyright 2003-2007
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2004
6 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
7 *
8 * (C) Copyright 2004-2005
9 * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
10 *
11 * Adapted to U-Boot 1.2 by:
12 * Bartlomiej Sieka <tur@semihalf.com>:
13 * - HW ID readout from EEPROM
14 * - module detection
15 * Grzegorz Bernacki <gjb@semihalf.com>:
16 * - run-time SDRAM controller configuration
17 * - LIBFDT support
18 *
19 * See file CREDITS for list of people who contributed to this
20 * project.
21 *
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.
26 *
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.
31 *
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,
35 * MA 02111-1307 USA
36 */
37
38#include <common.h>
39#include <mpc5xxx.h>
40#include <pci.h>
41#include <asm/processor.h>
42#include <i2c.h>
43#include <linux/ctype.h>
44
45#ifdef CONFIG_OF_LIBFDT
46#include <libfdt.h>
47#include <libfdt_env.h>
48#include <fdt_support.h>
49#endif /* CONFIG_OF_LIBFDT */
50
51
52#include "cm5200.h"
53#include "fwupdate.h"
54
55DECLARE_GLOBAL_DATA_PTR;
56
57static hw_id_t hw_id;
58
59
60#ifndef CFG_RAMBOOT
61/*
62 * Helper function to initialize SDRAM controller.
63 */
64static void sdram_start(int hi_addr, mem_conf_t *mem_conf)
65{
66 long hi_addr_bit = hi_addr ? 0x01000000 : 0;
67
68 /* unlock mode register */
69 *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | 0x80000000 |
70 hi_addr_bit;
71
72 /* precharge all banks */
73 *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | 0x80000002 |
74 hi_addr_bit;
75
76 /* auto refresh */
77 *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | 0x80000004 |
78 hi_addr_bit;
79
80 /* auto refresh, second time */
81 *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | 0x80000004 |
82 hi_addr_bit;
83
84 /* set mode register */
85 *(vu_long *)MPC5XXX_SDRAM_MODE = mem_conf->mode;
86
87 /* normal operation */
88 *(vu_long *)MPC5XXX_SDRAM_CTRL = mem_conf->control | hi_addr_bit;
89}
90#endif /* CFG_RAMBOOT */
91
92
93/*
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.
97 */
98static mem_conf_t* get_mem_config(int board_type)
99{
100 switch(board_type){
101 case CM1_QA:
102 return memory_config[0];
103 case CM11_QA:
104 case CMU1_QA:
105 return memory_config[1];
106 default:
107 printf("ERROR: Unknown module, using a default SDRAM "
108 "configuration - things may not work!!!.\n");
109 return memory_config[0];
110 }
111}
112
113
114/*
115 * Initalize SDRAM - configure SDRAM controller, detect memory size.
116 */
117long int initdram(int board_type)
118{
119 ulong dramsize = 0;
120#ifndef CFG_RAMBOOT
121 ulong test1, test2;
122 mem_conf_t *mem_conf;
123
124 mem_conf = get_mem_config(board_type);
Wolfgang Denkbe5d72d2007-08-13 21:57:53 +0200125
Bartlomiej Sieka86b116b2007-08-03 12:08:16 +0200126 /* configure SDRAM start/end for detection */
127 *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e; /* 2G at 0x0 */
128
129 /* setup config registers */
130 *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = mem_conf->config1;
131 *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = mem_conf->config2;
132
133 sdram_start(0, mem_conf);
134 test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
135 sdram_start(1, mem_conf);
136 test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
137 if (test1 > test2) {
138 sdram_start(0, mem_conf);
139 dramsize = test1;
140 } else
141 dramsize = test2;
142
143 /* memory smaller than 1MB is impossible */
144 if (dramsize < (1 << 20))
145 dramsize = 0;
146
147 /* set SDRAM CS0 size according to the amount of RAM found */
148 if (dramsize > 0) {
149 *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 +
150 __builtin_ffs(dramsize >> 20) - 1;
151 } else
152 *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
153#else /* CFG_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;
158 else
159 dramsize = 0;
160#endif /* !CFG_RAMBOOT */
161
162 /*
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.
166 */
167 *(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04;
168 __asm__ volatile ("sync");
169
170 return dramsize;
171}
172
173
174/*
175 * Read module hardware identification data from the I2C EEPROM.
176 */
177static void read_hw_id(hw_id_t hw_id)
178{
179 int i;
180 for (i = 0; i < HW_ID_ELEM_COUNT; ++i)
181 if (i2c_read(CFG_I2C_EEPROM,
182 hw_id_format[i].offset,
183 2,
184 (uchar *)&hw_id[i][0],
185 hw_id_format[i].length) != 0)
186 printf("ERROR: can't read HW ID from EEPROM\n");
187}
188
189
190/*
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.
194 */
195static void identify_module(hw_id_t hw_id)
196{
197 int i, j, element;
198 char match;
199 gd->board_type = CM5200_UNKNOWN_MODULE;
200 for (i = 0; i < sizeof (hw_id_list) / sizeof (char **); ++i) {
201 match = 1;
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],
205 &hw_id[element][0],
206 hw_id_format[element].length) != 0) {
207 match = 0;
208 break;
209 }
210 }
211 if (match) {
212 gd->board_type = i;
213 break;
214 }
215 }
216}
217
218
219/*
220 * Compose string with module name.
221 * buf is assumed to have enough space, and be null-terminated.
222 */
223static void compose_module_name(hw_id_t hw_id, char *buf)
224{
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]);
236 strcat(buf, tmp);
237}
238
239
240/*
241 * Compose string with hostname.
242 * buf is assumed to have enough space, and be null-terminated.
243 */
244static void compose_hostname(hw_id_t hw_id, char *buf)
245{
246 char *p;
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)
252 *p = tolower(*p);
253
254}
255
256
257#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
258/*
259 * Update 'model' and 'memory' properties in the blob according to the module
260 * that we are running on.
261 */
262static void ft_blob_update(void *blob, bd_t *bd)
263{
264 int len, ret, nodeoffset = 0;
265 char module_name[MODULE_NAME_MAXLEN] = {0};
Bartlomiej Sieka86b116b2007-08-03 12:08:16 +0200266
267 compose_module_name(hw_id, module_name);
268 len = strlen(module_name) + 1;
269
270 ret = fdt_setprop(blob, nodeoffset, "model", module_name, len);
271 if (ret < 0)
272 printf("ft_blob_update(): cannot set /model property err:%s\n",
273 fdt_strerror(ret));
274
Kumar Gala246d4ae2007-11-27 21:59:46 -0600275 ret = fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
Bartlomiej Sieka86b116b2007-08-03 12:08:16 +0200276
Kumar Gala246d4ae2007-11-27 21:59:46 -0600277 if (ret < 0) {
Bartlomiej Sieka86b116b2007-08-03 12:08:16 +0200278 printf("ft_blob_update): cannot set /memory/reg "
279 "property err:%s\n", fdt_strerror(ret));
280 }
Bartlomiej Sieka86b116b2007-08-03 12:08:16 +0200281}
282#endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
283
284
285/*
286 * Read HW ID from I2C EEPROM and detect the modue we are running on. Note
287 * that we need to use local variable for readout, because global data is not
288 * writable yet (and we'll have to redo the readout later on).
289 */
290int checkboard(void)
291{
292 hw_id_t hw_id_tmp;
293 char module_name_tmp[MODULE_NAME_MAXLEN] = "";
294
Wolfgang Denkbe5d72d2007-08-13 21:57:53 +0200295 /*
Bartlomiej Sieka86b116b2007-08-03 12:08:16 +0200296 * We need I2C to access HW ID data from EEPROM, so we call i2c_init()
297 * here despite the fact that it will be called again later on. We
298 * also use a little trick to silence I2C-related output.
299 */
300 gd->flags |= GD_FLG_SILENT;
301 i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
302 gd->flags &= ~GD_FLG_SILENT;
303
304 read_hw_id(hw_id_tmp);
305 identify_module(hw_id_tmp); /* this sets gd->board_type */
306 compose_module_name(hw_id_tmp, module_name_tmp);
307
308 if (gd->board_type != CM5200_UNKNOWN_MODULE)
309 printf("Board: %s\n", module_name_tmp);
310 else
311 printf("Board: unrecognized cm5200 module (%s)\n",
312 module_name_tmp);
Wolfgang Denkbe5d72d2007-08-13 21:57:53 +0200313
Bartlomiej Sieka86b116b2007-08-03 12:08:16 +0200314 return 0;
315}
316
317
318int board_early_init_r(void)
319{
320 /*
321 * Now, when we are in RAM, enable flash write access for detection
322 * process. Note that CS_BOOT cannot be cleared when executing in
323 * flash.
324 */
325 *(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
326
327 /* Now that we can write to global data, read HW ID again. */
328 read_hw_id(hw_id);
329 return 0;
330}
331
332
333#ifdef CONFIG_POST
334int post_hotkeys_pressed(void)
335{
336 return 0;
337}
338#endif /* CONFIG_POST */
339
340
341#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
342void post_word_store(ulong a)
343{
344 vu_long *save_addr = (vu_long *)(MPC5XXX_SRAM + MPC5XXX_SRAM_POST_SIZE);
345 *save_addr = a;
346}
347
348
349ulong post_word_load(void)
350{
351 vu_long *save_addr = (vu_long *)(MPC5XXX_SRAM + MPC5XXX_SRAM_POST_SIZE);
352 return *save_addr;
353}
354#endif /* CONFIG_POST || CONFIG_LOGBUFFER */
355
356
357#ifdef CONFIG_MISC_INIT_R
358int misc_init_r(void)
359{
360#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
361 uchar buf[6];
362 char str[18];
363 char hostname[MODULE_NAME_MAXLEN];
364
365 /* Read ethaddr from EEPROM */
366 if (i2c_read(CFG_I2C_EEPROM, CONFIG_MAC_OFFSET, 2, buf, 6) == 0) {
367 sprintf(str, "%02X:%02X:%02X:%02X:%02X:%02X",
368 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
369 /* Check if MAC addr is owned by Schindler */
370 if (strstr(str, "00:06:C3") != str)
371 printf(LOG_PREFIX "Warning - Illegal MAC address (%s)"
372 " in EEPROM.\n", str);
373 else {
374 printf(LOG_PREFIX "Using MAC (%s) from I2C EEPROM\n",
375 str);
376 setenv("ethaddr", str);
377 }
378 } else {
379 printf(LOG_PREFIX "Warning - Unable to read MAC from I2C"
380 " device at address %02X:%04X\n", CFG_I2C_EEPROM,
381 CONFIG_MAC_OFFSET);
382 }
383#endif /* defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) */
384 if (!getenv("ethaddr"))
385 printf(LOG_PREFIX "MAC address not set, networking is not "
386 "operational\n");
387
388 /* set the hostname appropriate to the module we're running on */
Bartlomiej Sieka92869192007-10-05 09:46:06 +0200389 hostname[0] = 0x00;
Bartlomiej Sieka86b116b2007-08-03 12:08:16 +0200390 compose_hostname(hw_id, hostname);
391 setenv("hostname", hostname);
392
393 return 0;
394}
395#endif /* CONFIG_MISC_INIT_R */
396
397
398#ifdef CONFIG_LAST_STAGE_INIT
399int last_stage_init(void)
400{
401#ifdef CONFIG_USB_STORAGE
402 cm5200_fwupdate();
403#endif /* CONFIG_USB_STORAGE */
404 return 0;
405}
406#endif /* CONFIG_LAST_STAGE_INIT */
407
408
409#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
410void ft_board_setup(void *blob, bd_t *bd)
411{
412 ft_cpu_setup(blob, bd);
413 ft_blob_update(blob, bd);
414}
415#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */