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1 | /* | |
2 | * (C) Copyright 2001-2003 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include <common.h> | |
25 | #include <config.h> | |
26 | #include <mpc8xx.h> | |
27 | #include <i2c.h> | |
28 | ||
29 | #include <commproc.h> | |
30 | #include <command.h> | |
31 | #include <malloc.h> | |
32 | ||
33 | #include <linux/types.h> | |
34 | #include <linux/string.h> /* for strdup */ | |
35 | ||
36 | ||
37 | /* | |
38 | * Memory Controller Using | |
39 | * | |
40 | * CS0 - Flash memory (0x40000000) | |
41 | * CS1 - FLASH memory (0x????????) | |
42 | * CS2 - SDRAM (0x00000000) | |
43 | * CS3 - | |
44 | * CS4 - | |
45 | * CS5 - | |
46 | * CS6 - PCMCIA device | |
47 | * CS7 - PCMCIA device | |
48 | */ | |
49 | ||
50 | /* ------------------------------------------------------------------------- */ | |
51 | ||
52 | #define _not_used_ 0xffffffff | |
53 | ||
54 | const uint sdram_table[]= | |
55 | { | |
56 | /* single read. (offset 0 in upm RAM) */ | |
57 | 0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00, | |
58 | 0x1ff77c47, | |
59 | ||
60 | /* MRS initialization (offset 5) */ | |
61 | ||
62 | 0x1ff77c34, 0xefeabc34, 0x1fb57c35, | |
63 | ||
64 | /* burst read. (offset 8 in upm RAM) */ | |
65 | 0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00, | |
66 | 0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47, | |
67 | _not_used_, _not_used_, _not_used_, _not_used_, | |
68 | _not_used_, _not_used_, _not_used_, _not_used_, | |
69 | ||
70 | /* single write. (offset 18 in upm RAM) */ | |
71 | 0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47, | |
72 | _not_used_, _not_used_, _not_used_, _not_used_, | |
73 | ||
74 | /* burst write. (offset 20 in upm RAM) */ | |
75 | 0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00, | |
76 | 0xf0affc00, 0xe1bbbc04, 0x1ff77c47, _not_used_, | |
77 | _not_used_, _not_used_, _not_used_, _not_used_, | |
78 | _not_used_, _not_used_, _not_used_, _not_used_, | |
79 | ||
80 | /* refresh. (offset 30 in upm RAM) */ | |
81 | 0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04, | |
82 | 0xfffffc84, 0xfffffc07, _not_used_, _not_used_, | |
83 | _not_used_, _not_used_, _not_used_, _not_used_, | |
84 | ||
85 | /* exception. (offset 3c in upm RAM) */ | |
86 | 0x7ffffc07, _not_used_, _not_used_, _not_used_ }; | |
87 | ||
88 | /* ------------------------------------------------------------------------- */ | |
89 | ||
90 | /* | |
91 | * Check Board Identity: | |
92 | */ | |
93 | ||
94 | int checkboard (void) | |
95 | { | |
96 | puts ("Board: R360 MPI Board\n"); | |
97 | return 0; | |
98 | } | |
99 | ||
100 | /* ------------------------------------------------------------------------- */ | |
101 | ||
102 | static long int dram_size (long int, long int *, long int); | |
103 | ||
104 | /* ------------------------------------------------------------------------- */ | |
105 | ||
106 | phys_size_t initdram (int board_type) | |
107 | { | |
108 | volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; | |
109 | volatile memctl8xx_t *memctl = &immap->im_memctl; | |
110 | long int size8, size9; | |
111 | long int size_b0 = 0; | |
112 | unsigned long reg; | |
113 | ||
114 | upmconfig (UPMA, (uint *) sdram_table, | |
115 | sizeof (sdram_table) / sizeof (uint)); | |
116 | ||
117 | /* | |
118 | * Preliminary prescaler for refresh (depends on number of | |
119 | * banks): This value is selected for four cycles every 62.4 us | |
120 | * with two SDRAM banks or four cycles every 31.2 us with one | |
121 | * bank. It will be adjusted after memory sizing. | |
122 | */ | |
123 | memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_8K; | |
124 | ||
125 | memctl->memc_mar = 0x00000088; | |
126 | ||
127 | /* | |
128 | * Map controller bank 2 to the SDRAM bank at | |
129 | * preliminary address - these have to be modified after the | |
130 | * SDRAM size has been determined. | |
131 | */ | |
132 | memctl->memc_or2 = CONFIG_SYS_OR2_PRELIM; | |
133 | memctl->memc_br2 = CONFIG_SYS_BR2_PRELIM; | |
134 | ||
135 | memctl->memc_mamr = CONFIG_SYS_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */ | |
136 | ||
137 | udelay (200); | |
138 | ||
139 | /* perform SDRAM initializsation sequence */ | |
140 | ||
141 | memctl->memc_mcr = 0x80004105; /* SDRAM bank 0 */ | |
142 | udelay (200); | |
143 | memctl->memc_mcr = 0x80004230; /* SDRAM bank 0 - execute twice */ | |
144 | udelay (200); | |
145 | ||
146 | memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */ | |
147 | ||
148 | udelay (1000); | |
149 | ||
150 | /* | |
151 | * Check Bank 2 Memory Size for re-configuration | |
152 | * | |
153 | * try 8 column mode | |
154 | */ | |
155 | size8 = dram_size (CONFIG_SYS_MAMR_8COL, (long *) SDRAM_BASE2_PRELIM, | |
156 | SDRAM_MAX_SIZE); | |
157 | ||
158 | udelay (1000); | |
159 | ||
160 | /* | |
161 | * try 9 column mode | |
162 | */ | |
163 | size9 = dram_size (CONFIG_SYS_MAMR_9COL, (long *) SDRAM_BASE2_PRELIM, | |
164 | SDRAM_MAX_SIZE); | |
165 | ||
166 | if (size8 < size9) { /* leave configuration at 9 columns */ | |
167 | size_b0 = size9; | |
168 | /* debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20); */ | |
169 | } else { /* back to 8 columns */ | |
170 | size_b0 = size8; | |
171 | memctl->memc_mamr = CONFIG_SYS_MAMR_8COL; | |
172 | udelay (500); | |
173 | /* debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size >> 20); */ | |
174 | } | |
175 | ||
176 | udelay (1000); | |
177 | ||
178 | /* | |
179 | * Adjust refresh rate depending on SDRAM type, both banks | |
180 | * For types > 128 MBit leave it at the current (fast) rate | |
181 | */ | |
182 | if ((size_b0 < 0x02000000)) { | |
183 | /* reduce to 15.6 us (62.4 us / quad) */ | |
184 | memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_4K; | |
185 | udelay (1000); | |
186 | } | |
187 | ||
188 | /* | |
189 | * Final mapping | |
190 | */ | |
191 | ||
192 | memctl->memc_or1 = ((-size_b0) & 0xFFFF0000) | CONFIG_SYS_OR_TIMING_SDRAM; | |
193 | memctl->memc_br1 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V; | |
194 | ||
195 | /* adjust refresh rate depending on SDRAM type, one bank */ | |
196 | reg = memctl->memc_mptpr; | |
197 | reg >>= 1; /* reduce to CONFIG_SYS_MPTPR_1BK_8K / _4K */ | |
198 | memctl->memc_mptpr = reg; | |
199 | ||
200 | udelay (10000); | |
201 | ||
202 | #ifdef CONFIG_CAN_DRIVER | |
203 | /* Initialize OR3 / BR3 */ | |
204 | memctl->memc_or3 = CONFIG_SYS_OR3_CAN; /* switch GPLB_5 to GPLA_5 */ | |
205 | memctl->memc_br3 = CONFIG_SYS_BR3_CAN; | |
206 | ||
207 | /* Initialize MBMR */ | |
208 | memctl->memc_mbmr = MBMR_GPL_B4DIS; /* GPL_B4 works as UPWAITB */ | |
209 | ||
210 | /* Initialize UPMB for CAN: single read */ | |
211 | memctl->memc_mdr = 0xFFFFC004; | |
212 | memctl->memc_mcr = 0x0100 | UPMB; | |
213 | ||
214 | memctl->memc_mdr = 0x0FFFD004; | |
215 | memctl->memc_mcr = 0x0101 | UPMB; | |
216 | ||
217 | memctl->memc_mdr = 0x0FFFC000; | |
218 | memctl->memc_mcr = 0x0102 | UPMB; | |
219 | ||
220 | memctl->memc_mdr = 0x3FFFC004; | |
221 | memctl->memc_mcr = 0x0103 | UPMB; | |
222 | ||
223 | memctl->memc_mdr = 0xFFFFDC05; | |
224 | memctl->memc_mcr = 0x0104 | UPMB; | |
225 | ||
226 | /* Initialize UPMB for CAN: single write */ | |
227 | memctl->memc_mdr = 0xFFFCC004; | |
228 | memctl->memc_mcr = 0x0118 | UPMB; | |
229 | ||
230 | memctl->memc_mdr = 0xCFFCD004; | |
231 | memctl->memc_mcr = 0x0119 | UPMB; | |
232 | ||
233 | memctl->memc_mdr = 0x0FFCC000; | |
234 | memctl->memc_mcr = 0x011A | UPMB; | |
235 | ||
236 | memctl->memc_mdr = 0x7FFCC004; | |
237 | memctl->memc_mcr = 0x011B | UPMB; | |
238 | ||
239 | memctl->memc_mdr = 0xFFFDCC05; | |
240 | memctl->memc_mcr = 0x011C | UPMB; | |
241 | #endif | |
242 | ||
243 | return (size_b0); | |
244 | } | |
245 | ||
246 | /* ------------------------------------------------------------------------- */ | |
247 | ||
248 | /* | |
249 | * Check memory range for valid RAM. A simple memory test determines | |
250 | * the actually available RAM size between addresses `base' and | |
251 | * `base + maxsize'. Some (not all) hardware errors are detected: | |
252 | * - short between address lines | |
253 | * - short between data lines | |
254 | */ | |
255 | ||
256 | static long int dram_size (long int mamr_value, | |
257 | long int *base, long int maxsize) | |
258 | { | |
259 | volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; | |
260 | volatile memctl8xx_t *memctl = &immap->im_memctl; | |
261 | ||
262 | memctl->memc_mamr = mamr_value; | |
263 | ||
264 | return (get_ram_size(base, maxsize)); | |
265 | } | |
266 | ||
267 | /* ------------------------------------------------------------------------- */ | |
268 | ||
269 | void r360_i2c_lcd_write (uchar data0, uchar data1) | |
270 | { | |
271 | if (i2c_write (CONFIG_SYS_I2C_LCD_ADDR, data0, 1, &data1, 1)) { | |
272 | printf("Can't write lcd data 0x%02X 0x%02X.\n", data0, data1); | |
273 | } | |
274 | } | |
275 | ||
276 | /* ------------------------------------------------------------------------- */ | |
277 | ||
278 | /*----------------------------------------------------------------------- | |
279 | * Keyboard Controller | |
280 | */ | |
281 | ||
282 | /* Number of bytes returned from Keyboard Controller */ | |
283 | #define KEYBD_KEY_MAX 16 /* maximum key number */ | |
284 | #define KEYBD_DATALEN ((KEYBD_KEY_MAX + 7) / 8) /* normal key scan data */ | |
285 | ||
286 | static uchar *key_match (uchar *); | |
287 | ||
288 | int misc_init_r (void) | |
289 | { | |
290 | char kbd_data[KEYBD_DATALEN]; | |
291 | char keybd_env[2 * KEYBD_DATALEN + 1]; | |
292 | char *str; | |
293 | int i; | |
294 | ||
295 | i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); | |
296 | ||
297 | i2c_read (CONFIG_SYS_I2C_KEY_ADDR, 0, 0, (uchar *)kbd_data, KEYBD_DATALEN); | |
298 | ||
299 | for (i = 0; i < KEYBD_DATALEN; ++i) { | |
300 | sprintf (keybd_env + i + i, "%02X", kbd_data[i]); | |
301 | } | |
302 | setenv ("keybd", keybd_env); | |
303 | ||
304 | str = strdup ((char *)key_match ((uchar *)keybd_env)); /* decode keys */ | |
305 | ||
306 | #ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */ | |
307 | setenv ("preboot", str); /* set or delete definition */ | |
308 | #endif /* CONFIG_PREBOOT */ | |
309 | if (str != NULL) { | |
310 | free (str); | |
311 | } | |
312 | ||
313 | return (0); | |
314 | } | |
315 | ||
316 | /*----------------------------------------------------------------------- | |
317 | * Check if pressed key(s) match magic sequence, | |
318 | * and return the command string associated with that key(s). | |
319 | * | |
320 | * If no key press was decoded, NULL is returned. | |
321 | * | |
322 | * Note: the first character of the argument will be overwritten with | |
323 | * the "magic charcter code" of the decoded key(s), or '\0'. | |
324 | * | |
325 | * | |
326 | * Note: the string points to static environment data and must be | |
327 | * saved before you call any function that modifies the environment. | |
328 | */ | |
329 | #ifdef CONFIG_PREBOOT | |
330 | ||
331 | static uchar kbd_magic_prefix[] = "key_magic"; | |
332 | static uchar kbd_command_prefix[] = "key_cmd"; | |
333 | ||
334 | static uchar *key_match (uchar * kbd_str) | |
335 | { | |
336 | uchar magic[sizeof (kbd_magic_prefix) + 1]; | |
337 | uchar cmd_name[sizeof (kbd_command_prefix) + 1]; | |
338 | uchar *str, *suffix; | |
339 | uchar *kbd_magic_keys; | |
340 | char *cmd; | |
341 | ||
342 | /* | |
343 | * The following string defines the characters that can pe appended | |
344 | * to "key_magic" to form the names of environment variables that | |
345 | * hold "magic" key codes, i. e. such key codes that can cause | |
346 | * pre-boot actions. If the string is empty (""), then only | |
347 | * "key_magic" is checked (old behaviour); the string "125" causes | |
348 | * checks for "key_magic1", "key_magic2" and "key_magic5", etc. | |
349 | */ | |
350 | if ((kbd_magic_keys = (uchar *)getenv ("magic_keys")) != NULL) { | |
351 | /* loop over all magic keys; | |
352 | * use '\0' suffix in case of empty string | |
353 | */ | |
354 | for (suffix = kbd_magic_keys; | |
355 | *suffix || suffix == kbd_magic_keys; | |
356 | ++suffix) { | |
357 | sprintf ((char *)magic, "%s%c", kbd_magic_prefix, *suffix); | |
358 | ||
359 | #if 0 | |
360 | printf ("### Check magic \"%s\"\n", magic); | |
361 | #endif | |
362 | ||
363 | if ((str = (uchar *)getenv ((char *)magic)) != 0) { | |
364 | ||
365 | #if 0 | |
366 | printf ("### Compare \"%s\" \"%s\"\n", | |
367 | kbd_str, str); | |
368 | #endif | |
369 | if (strcmp ((char *)kbd_str, (char *)str) == 0) { | |
370 | sprintf ((char *)cmd_name, "%s%c", | |
371 | kbd_command_prefix, | |
372 | *suffix); | |
373 | ||
374 | if ((cmd = getenv ((char *)cmd_name)) != 0) { | |
375 | #if 0 | |
376 | printf ("### Set PREBOOT to $(%s): \"%s\"\n", | |
377 | cmd_name, cmd); | |
378 | #endif | |
379 | return ((uchar *)cmd); | |
380 | } | |
381 | } | |
382 | } | |
383 | } | |
384 | } | |
385 | #if 0 | |
386 | printf ("### Delete PREBOOT\n"); | |
387 | #endif | |
388 | *kbd_str = '\0'; | |
389 | return (NULL); | |
390 | } | |
391 | #endif /* CONFIG_PREBOOT */ | |
392 | ||
393 | /* Read Keyboard status */ | |
394 | int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
395 | { | |
396 | uchar kbd_data[KEYBD_DATALEN]; | |
397 | uchar keybd_env[2 * KEYBD_DATALEN + 1]; | |
398 | int i; | |
399 | ||
400 | i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); | |
401 | ||
402 | /* Read keys */ | |
403 | i2c_read (CONFIG_SYS_I2C_KEY_ADDR, 0, 0, kbd_data, KEYBD_DATALEN); | |
404 | ||
405 | puts ("Keys:"); | |
406 | for (i = 0; i < KEYBD_DATALEN; ++i) { | |
407 | sprintf ((char *)(keybd_env + i + i), "%02X", kbd_data[i]); | |
408 | printf (" %02x", kbd_data[i]); | |
409 | } | |
410 | putc ('\n'); | |
411 | setenv ("keybd", (char *)keybd_env); | |
412 | return 0; | |
413 | } | |
414 | ||
415 | U_BOOT_CMD( | |
416 | kbd, 1, 1, do_kbd, | |
417 | "kbd - read keyboard status\n", | |
418 | NULL | |
419 | ); |