blob: 7181bd8a423d95677a308b89139b2e3616fcac64 [file] [log] [blame]
Heiko Schocher258c37b2008-08-21 20:44:49 +02001/*
2 * (C) Copyright 2003-2004
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
9 * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
10 *
11 * (C) Copyright 2008
12 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
13 *
14 * See file CREDITS for list of people who contributed to this
15 * project.
16 *
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 * MA 02111-1307 USA
31 */
32
33#include <common.h>
34#include <mpc5xxx.h>
35#include <pci.h>
36#include <malloc.h>
37#include <asm/processor.h>
38#include <asm/io.h>
39
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020040#ifndef CONFIG_SYS_RAMBOOT
Heiko Schocher258c37b2008-08-21 20:44:49 +020041static void sdram_start (int hi_addr)
42{
43 long hi_addr_bit = hi_addr ? 0x01000000 : 0;
44
45 /* unlock mode register */
46 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
47 (SDRAM_CONTROL | 0x80000000 | hi_addr_bit));
48 __asm__ volatile ("sync");
49
50 /* precharge all banks */
51 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
52 (SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
53 __asm__ volatile ("sync");
54
55#if SDRAM_DDR
56 /* set mode register: extended mode */
57 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_MODE, (SDRAM_EMODE));
58 __asm__ volatile ("sync");
59
60 /* set mode register: reset DLL */
61 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_MODE,
62 (SDRAM_MODE | 0x04000000));
63 __asm__ volatile ("sync");
64#endif
65
66 /* precharge all banks */
67 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
68 (SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
69 __asm__ volatile ("sync");
70
71 /* auto refresh */
72 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
73 (SDRAM_CONTROL | 0x80000004 | hi_addr_bit));
74 __asm__ volatile ("sync");
75
76 /* set mode register */
77 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_MODE, (SDRAM_MODE));
78 __asm__ volatile ("sync");
79
80 /* normal operation */
81 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
82 (SDRAM_CONTROL | hi_addr_bit));
83 __asm__ volatile ("sync");
84}
85#endif
86
87/*
88 * ATTENTION: Although partially referenced initdram does NOT make real use
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020089 * use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
Heiko Schocher258c37b2008-08-21 20:44:49 +020090 * is something else than 0x00000000.
91 */
92
93phys_size_t initdram (int board_type)
94{
95 ulong dramsize = 0;
96 ulong dramsize2 = 0;
97 uint svr, pvr;
98
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020099#ifndef CONFIG_SYS_RAMBOOT
Heiko Schocher258c37b2008-08-21 20:44:49 +0200100 ulong test1, test2;
101
102 /* setup SDRAM chip selects */
103 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG, 0x0000001c); /* 512MB at 0x0 */
104 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG, 0x80000000);/* disabled */
105 __asm__ volatile ("sync");
106
107 /* setup config registers */
108 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
109 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);
110 __asm__ volatile ("sync");
111
112#if SDRAM_DDR
113 /* set tap delay */
114 out_be32 ((unsigned __iomem *)MPC5XXX_CDM_PORCFG, SDRAM_TAPDELAY);
115 __asm__ volatile ("sync");
116#endif
117
118 /* find RAM size using SDRAM CS0 only */
119 sdram_start (0);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200120 test1 = get_ram_size ((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
Heiko Schocher258c37b2008-08-21 20:44:49 +0200121 sdram_start(1);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200122 test2 = get_ram_size ((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
Heiko Schocher258c37b2008-08-21 20:44:49 +0200123 if (test1 > test2) {
124 sdram_start (0);
125 dramsize = test1;
126 } else {
127 dramsize = test2;
128 }
129
130 /* memory smaller than 1MB is impossible */
131 if (dramsize < (1 << 20)) {
132 dramsize = 0;
133 }
134
135 /* set SDRAM CS0 size according to the amount of RAM found */
136 if (dramsize > 0) {
137 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG,
138 (0x13 + __builtin_ffs(dramsize >> 20) - 1));
139 } else {
140 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
141 }
142
143 /* let SDRAM CS1 start right after CS0 */
144 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG, (dramsize + 0x0000001c));/*512MB*/
145
146 /* find RAM size using SDRAM CS1 only */
147 if (!dramsize)
148 sdram_start (0);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200149 test2 = test1 = get_ram_size ((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
Heiko Schocher258c37b2008-08-21 20:44:49 +0200150 if (!dramsize) {
151 sdram_start (1);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200152 test2 = get_ram_size ((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
Heiko Schocher258c37b2008-08-21 20:44:49 +0200153 }
154 if (test1 > test2) {
155 sdram_start (0);
156 dramsize2 = test1;
157 } else {
158 dramsize2 = test2;
159 }
160
161 /* memory smaller than 1MB is impossible */
162 if (dramsize2 < (1 << 20)) {
163 dramsize2 = 0;
164 }
165
166 /* set SDRAM CS1 size according to the amount of RAM found */
167 if (dramsize2 > 0) {
168 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG,
169 (dramsize | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1)));
170 } else {
171 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG, dramsize); /* disabled */
172 }
173
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200174#else /* CONFIG_SYS_RAMBOOT */
Heiko Schocher258c37b2008-08-21 20:44:49 +0200175
176 /* retrieve size of memory connected to SDRAM CS0 */
177 dramsize = in_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
178 if (dramsize >= 0x13) {
179 dramsize = (1 << (dramsize - 0x13)) << 20;
180 } else {
181 dramsize = 0;
182 }
183
184 /* retrieve size of memory connected to SDRAM CS1 */
185 dramsize2 = in_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG) & 0xFF;
186 if (dramsize2 >= 0x13) {
187 dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
188 } else {
189 dramsize2 = 0;
190 }
191
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200192#endif /* CONFIG_SYS_RAMBOOT */
Heiko Schocher258c37b2008-08-21 20:44:49 +0200193
194 /*
Wolfgang Denkf12e4542008-09-13 02:23:05 +0200195 * On MPC5200B we need to set the special configuration delay in the
196 * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
197 * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
198 *
199 * "The SDelay should be written to a value of 0x00000004. It is
200 * required to account for changes caused by normal wafer processing
201 * parameters."
202 */
203 svr = get_svr();
204 pvr = get_pvr();
205 if ((SVR_MJREV(svr) >= 2) &&
206 (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
Heiko Schocher258c37b2008-08-21 20:44:49 +0200207
Wolfgang Denkf12e4542008-09-13 02:23:05 +0200208 out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_SDELAY, 0x04);
209 __asm__ volatile ("sync");
210 }
Heiko Schocher258c37b2008-08-21 20:44:49 +0200211
212 return dramsize + dramsize2;
213}
214
215int checkboard (void)
216{
217 puts ("Board: MUC.MC-52 HW WDT ");
218#if defined(CONFIG_HW_WATCHDOG)
219 puts ("enabled\n");
220#else
221 puts ("disabled\n");
222#endif
223 return 0;
224}
225
226#ifdef CONFIG_PREBOOT
227
228static uchar kbd_magic_prefix[] = "key_magic";
229static uchar kbd_command_prefix[] = "key_cmd";
230
231#define S1_ROT 0xf0
232#define S2_Q 0x40
233#define S2_M 0x20
234
235struct kbd_data_t {
236 char s1;
237 char s2;
238};
239
240struct kbd_data_t* get_keys (struct kbd_data_t *kbd_data)
241{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200242 kbd_data->s1 = in_8 ((volatile uchar*)CONFIG_SYS_STATUS1_BASE);
243 kbd_data->s2 = in_8 ((volatile uchar*)CONFIG_SYS_STATUS2_BASE);
Heiko Schocher258c37b2008-08-21 20:44:49 +0200244
245 return kbd_data;
246}
247
248static int compare_magic (const struct kbd_data_t *kbd_data, char *str)
249{
250 char s1 = str[0];
251 char s2;
252
253 if (s1 >= '0' && s1 <= '9')
254 s1 -= '0';
255 else if (s1 >= 'a' && s1 <= 'f')
256 s1 = s1 - 'a' + 10;
257 else if (s1 >= 'A' && s1 <= 'F')
258 s1 = s1 - 'A' + 10;
259 else
260 return -1;
261
262 if (((S1_ROT & kbd_data->s1) >> 4) != s1)
263 return -1;
264
265 s2 = (S2_Q | S2_M) & kbd_data->s2;
266
267 switch (str[1]) {
268 case 'q':
269 case 'Q':
270 if (s2 == S2_Q)
271 return -1;
272 break;
273 case 'm':
274 case 'M':
275 if (s2 == S2_M)
276 return -1;
277 break;
278 case '\0':
279 if (s2 == (S2_Q | S2_M))
280 return 0;
281 default:
282 return -1;
283 }
284
285 if (str[2])
286 return -1;
287
288 return 0;
289}
290
291static char *key_match (const struct kbd_data_t *kbd_data)
292{
293 char magic[sizeof (kbd_magic_prefix) + 1];
294 char *suffix;
295 char *kbd_magic_keys;
296
297 /*
298 * The following string defines the characters that can be appended
299 * to "key_magic" to form the names of environment variables that
300 * hold "magic" key codes, i. e. such key codes that can cause
301 * pre-boot actions. If the string is empty (""), then only
302 * "key_magic" is checked (old behaviour); the string "125" causes
303 * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
304 */
305 if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
306 kbd_magic_keys = "";
307
308 /* loop over all magic keys;
309 * use '\0' suffix in case of empty string
310 */
311 for (suffix = kbd_magic_keys; *suffix ||
312 suffix == kbd_magic_keys; ++suffix) {
313 sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
314
315 if (compare_magic(kbd_data, getenv(magic)) == 0) {
316 char cmd_name[sizeof (kbd_command_prefix) + 1];
317 char *cmd;
318
319 sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
320 cmd = getenv (cmd_name);
321
322 return (cmd);
323 }
324 }
325
326 return (NULL);
327}
328
329#endif /* CONFIG_PREBOOT */
330
331int misc_init_r (void)
332{
333#ifdef CONFIG_PREBOOT
334 struct kbd_data_t kbd_data;
335 /* Decode keys */
336 char *str = strdup (key_match (get_keys (&kbd_data)));
337 /* Set or delete definition */
338 setenv ("preboot", str);
339 free (str);
340#endif /* CONFIG_PREBOOT */
341
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200342 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x38), ' ');
343 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x39), ' ');
344 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3A), ' ');
345 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3B), ' ');
346 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3C), ' ');
347 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3D), ' ');
348 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3E), ' ');
349 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3F), ' ');
Heiko Schocher258c37b2008-08-21 20:44:49 +0200350
351 return 0;
352}
353
354int board_early_init_r (void)
355{
356 out_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_CFG, in_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_CFG) & ~0x1);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200357 out_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_START, START_REG(CONFIG_SYS_FLASH_BASE));
358 out_be32 ((unsigned __iomem *)MPC5XXX_CS0_START, START_REG(CONFIG_SYS_FLASH_BASE));
Heiko Schocher258c37b2008-08-21 20:44:49 +0200359 out_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_STOP,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200360 STOP_REG(CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_SIZE));
Heiko Schocher258c37b2008-08-21 20:44:49 +0200361 out_be32 ((unsigned __iomem *)MPC5XXX_CS0_STOP,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200362 STOP_REG(CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_SIZE));
Heiko Schocher258c37b2008-08-21 20:44:49 +0200363 return 0;
364}
365
366int last_stage_init (void)
367{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200368 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x38), 'M');
369 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x39), 'U');
370 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3A), 'C');
371 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3B), '.');
372 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3C), 'M');
373 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3D), 'C');
374 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3E), '5');
375 out_8 ((volatile uchar *)(CONFIG_SYS_DISPLAY_BASE + 0x3F), '2');
Heiko Schocher258c37b2008-08-21 20:44:49 +0200376
Wolfgang Denkf12e4542008-09-13 02:23:05 +0200377 return 0;
Heiko Schocher258c37b2008-08-21 20:44:49 +0200378}
379
380#if defined(CONFIG_HW_WATCHDOG)
381#define GPT_OUT_0 0x00000027
382#define GPT_OUT_1 0x00000037
383void hw_watchdog_reset (void)
384{
385 /* Trigger HW Watchdog with TIMER_0 */
386 out_be32 ((unsigned __iomem *)MPC5XXX_GPT0_ENABLE, GPT_OUT_1);
387 out_be32 ((unsigned __iomem *)MPC5XXX_GPT0_ENABLE, GPT_OUT_0);
388}
389#endif
390
391#ifdef CONFIG_PCI
392static struct pci_controller hose;
393
394extern void pci_mpc5xxx_init (struct pci_controller *);
395
396void pci_init_board (void)
397{
398 pci_mpc5xxx_init (&hose);
399}
400#endif