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Revert "common, env: Fix support for environment in i2c eeprom"
[people/ms/u-boot.git] / board / gw8260 / gw8260.c
1 /*
2 * (C) Copyright 2000
3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
5 *
6 * (C) Copyright 2001
7 * Advent Networks, Inc. <http://www.adventnetworks.com>
8 * Jay Monkman <jtm@smoothsmoothie.com>
9 *
10 * (C) Copyright 2001
11 * Advent Networks, Inc. <http://www.adventnetworks.com>
12 * Oliver Brown <oliverb@alumni.utexas.net>
13 *
14 * SPDX-License-Identifier: GPL-2.0+
15 */
16
17 /*********************************************************************/
18 /* DESCRIPTION:
19 * This file contains the board routines for the GW8260 board.
20 *
21 * MODULE DEPENDENCY:
22 * None
23 *
24 * RESTRICTIONS/LIMITATIONS:
25 * None
26 *
27 * Copyright (c) 2001, Advent Networks, Inc.
28 */
29 /*********************************************************************/
30
31 #include <common.h>
32 #include <ioports.h>
33 #include <mpc8260.h>
34
35 /*
36 * I/O Port configuration table
37 *
38 */
39 const iop_conf_t iop_conf_tab[4][32] = {
40
41 /* Port A configuration */
42 { /* conf ppar psor pdir podr pdat */
43 /* PA31 */ { 1, 0, 0, 1, 0, 0 }, /* TP14 */
44 /* PA30 */ { 1, 1, 1, 1, 0, 0 }, /* US_RTS */
45 /* PA29 */ { 1, 0, 0, 1, 0, 1 }, /* LSSI_DATA */
46 /* PA28 */ { 1, 0, 0, 1, 0, 1 }, /* LSSI_CLK */
47 /* PA27 */ { 1, 0, 0, 1, 0, 0 }, /* TP12 */
48 /* PA26 */ { 1, 0, 0, 0, 0, 0 }, /* IO_STATUS */
49 /* PA25 */ { 1, 0, 0, 0, 0, 0 }, /* IO_CLOCK */
50 /* PA24 */ { 1, 0, 0, 0, 0, 0 }, /* IO_CONFIG */
51 /* PA23 */ { 1, 0, 0, 0, 0, 0 }, /* IO_DONE */
52 /* PA22 */ { 1, 0, 0, 0, 0, 0 }, /* IO_DATA */
53 /* PA21 */ { 1, 1, 0, 1, 0, 0 }, /* US_TXD3 */
54 /* PA20 */ { 1, 1, 0, 1, 0, 0 }, /* US_TXD2 */
55 /* PA19 */ { 1, 1, 0, 1, 0, 0 }, /* US_TXD1 */
56 /* PA18 */ { 1, 1, 0, 1, 0, 0 }, /* US_TXD0 */
57 /* PA17 */ { 1, 1, 0, 0, 0, 0 }, /* DS_RXD0 */
58 /* PA16 */ { 1, 1, 0, 0, 0, 0 }, /* DS_RXD1 */
59 /* PA15 */ { 1, 1, 0, 0, 0, 0 }, /* DS_RXD2 */
60 /* PA14 */ { 1, 1, 0, 0, 0, 0 }, /* DS_RXD3 */
61 /* PA13 */ { 1, 0, 0, 1, 0, 0 }, /* SPARE7 */
62 /* PA12 */ { 1, 0, 0, 1, 0, 0 }, /* SPARE6 */
63 /* PA11 */ { 1, 0, 0, 1, 0, 0 }, /* SPARE5 */
64 /* PA10 */ { 1, 0, 0, 1, 0, 0 }, /* SPARE4 */
65 /* PA9 */ { 1, 0, 0, 1, 0, 0 }, /* SPARE3 */
66 /* PA8 */ { 1, 0, 0, 1, 0, 0 }, /* SPARE2 */
67 /* PA7 */ { 1, 0, 0, 0, 0, 0 }, /* LSSI_IN */
68 /* PA6 */ { 1, 0, 0, 1, 0, 0 }, /* SPARE0 */
69 /* PA5 */ { 1, 0, 0, 1, 0, 0 }, /* DEMOD_RESET_ */
70 /* PA4 */ { 1, 0, 0, 1, 0, 0 }, /* MOD_RESET_ */
71 /* PA3 */ { 1, 0, 0, 1, 0, 0 }, /* IO_RESET */
72 /* PA2 */ { 1, 0, 0, 1, 0, 0 }, /* TX_ENABLE */
73 /* PA1 */ { 1, 0, 0, 0, 0, 0 }, /* RX_LOCK */
74 /* PA0 */ { 1, 0, 0, 1, 0, 1 } /* MPC_RESET_ */
75 },
76
77 /* Port B configuration */
78 { /* conf ppar psor pdir podr pdat */
79 /* PB31 */ { 1, 1, 0, 1, 0, 0 }, /* FETH0_TX_ER */
80 /* PB30 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_RX_DV */
81 /* PB29 */ { 1, 1, 1, 1, 0, 0 }, /* FETH0_TX_EN */
82 /* PB28 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_RX_ER */
83 /* PB27 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_COL */
84 /* PB26 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_CRS */
85 /* PB25 */ { 1, 1, 0, 1, 0, 0 }, /* FETH0_TXD3 */
86 /* PB24 */ { 1, 1, 0, 1, 0, 0 }, /* FETH0_TXD2 */
87 /* PB23 */ { 1, 1, 0, 1, 0, 0 }, /* FETH0_TXD1 */
88 /* PB22 */ { 1, 1, 0, 1, 0, 0 }, /* FETH0_TXD0 */
89 /* PB21 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_RXD0 */
90 /* PB20 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_RXD1 */
91 /* PB19 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_RXD2 */
92 /* PB18 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_RXD3 */
93 /* PB17 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_RX_DV */
94 /* PB16 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_RX_ER */
95 /* PB15 */ { 1, 1, 0, 1, 0, 0 }, /* FETH1_TX_ER */
96 /* PB14 */ { 1, 1, 0, 1, 0, 0 }, /* FETH1_TX_EN */
97 /* PB13 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_COL */
98 /* PB12 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_CRS */
99 /* PB11 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_RXD3 */
100 /* PB10 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_RXD2 */
101 /* PB9 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_RXD1 */
102 /* PB8 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_RXD0 */
103 /* PB7 */ { 1, 1, 0, 1, 0, 0 }, /* FETH1_TXD0 */
104 /* PB6 */ { 1, 1, 0, 1, 0, 0 }, /* FETH1_TXD1 */
105 /* PB5 */ { 1, 1, 0, 1, 0, 0 }, /* FETH1_TXD2 */
106 /* PB4 */ { 1, 1, 0, 1, 0, 0 }, /* FETH1_TXD3 */
107 /* PB3 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
108 /* PB2 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
109 /* PB1 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
110 /* PB0 */ { 0, 0, 0, 0, 0, 0 } /* pin doesn't exist */
111 },
112
113 /* Port C */
114 { /* conf ppar psor pdir podr pdat */
115 /* PC31 */ { 1, 0, 0, 1, 0, 1 }, /* FAST_RESET_ */
116 /* PC30 */ { 1, 0, 0, 1, 0, 1 }, /* FAST_PAUSE_ */
117 /* PC29 */ { 1, 0, 0, 1, 0, 0 }, /* FAST_SLEW1 */
118 /* PC28 */ { 1, 0, 0, 1, 0, 0 }, /* FAST_SLEW0 */
119 /* PC27 */ { 1, 0, 0, 1, 0, 0 }, /* TP13 */
120 /* PC26 */ { 1, 0, 0, 0, 0, 0 }, /* RXDECDFLG */
121 /* PC25 */ { 1, 0, 0, 0, 0, 0 }, /* RXACQFAIL */
122 /* PC24 */ { 1, 0, 0, 0, 0, 0 }, /* RXACQFLG */
123 /* PC23 */ { 1, 0, 0, 1, 0, 0 }, /* WD_TCL */
124 /* PC22 */ { 1, 0, 0, 1, 0, 0 }, /* WD_EN */
125 /* PC21 */ { 1, 0, 0, 1, 0, 0 }, /* US_TXCLK */
126 /* PC20 */ { 1, 0, 0, 0, 0, 0 }, /* DS_RXCLK */
127 /* PC19 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_RX_CLK */
128 /* PC18 */ { 1, 1, 0, 0, 0, 0 }, /* FETH0_TX_CLK */
129 /* PC17 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_RX_CLK */
130 /* PC16 */ { 1, 1, 0, 0, 0, 0 }, /* FETH1_TX_CLK */
131 /* PC15 */ { 1, 0, 0, 1, 0, 0 }, /* TX_SHUTDOWN_ */
132 /* PC14 */ { 1, 0, 0, 0, 0, 0 }, /* RS_232_DTR_ */
133 /* PC13 */ { 1, 0, 0, 0, 0, 0 }, /* TXERR */
134 /* PC12 */ { 1, 0, 0, 1, 0, 1 }, /* FETH1_MDDIS */
135 /* PC11 */ { 1, 0, 0, 1, 0, 1 }, /* FETH0_MDDIS */
136 /* PC10 */ { 1, 0, 0, 1, 0, 0 }, /* MDC */
137 /* PC9 */ { 1, 0, 0, 1, 1, 1 }, /* MDIO */
138 /* PC8 */ { 1, 0, 0, 1, 1, 1 }, /* SER_NUM */
139 /* PC7 */ { 1, 1, 0, 0, 0, 0 }, /* US_CTS */
140 /* PC6 */ { 1, 1, 0, 0, 0, 0 }, /* DS_CD_ */
141 /* PC5 */ { 1, 0, 0, 1, 0, 0 }, /* FETH1_PWRDWN */
142 /* PC4 */ { 1, 0, 0, 1, 0, 0 }, /* FETH0_PWRDWN */
143 /* PC3 */ { 1, 0, 0, 1, 0, 0 }, /* MPULED3 */
144 /* PC2 */ { 1, 0, 0, 1, 0, 0 }, /* MPULED2 */
145 /* PC1 */ { 1, 0, 0, 1, 0, 0 }, /* MPULED1 */
146 /* PC0 */ { 1, 0, 0, 1, 0, 1 }, /* MPULED0 */
147 },
148
149 /* Port D */
150 { /* conf ppar psor pdir podr pdat */
151 /* PD31 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
152 /* PD30 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
153 /* PD29 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
154 /* PD28 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
155 /* PD27 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
156 /* PD26 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
157 /* PD25 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
158 /* PD24 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
159 /* PD23 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
160 /* PD22 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
161 /* PD21 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
162 /* PD20 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
163 /* PD19 */ { 1, 1, 1, 0, 0, 0 }, /* not used */
164 /* PD18 */ { 1, 1, 1, 0, 0, 0 }, /* not used */
165 /* PD17 */ { 1, 1, 1, 0, 0, 0 }, /* not used */
166 /* PD16 */ { 1, 1, 1, 0, 0, 0 }, /* not used */
167 /* PD15 */ { 1, 1, 1, 0, 1, 1 }, /* SDRAM_SDA */
168 /* PD14 */ { 1, 1, 1, 0, 1, 1 }, /* SDRAM_SCL */
169 /* PD13 */ { 1, 0, 0, 1, 0, 0 }, /* MPULED7 */
170 /* PD12 */ { 1, 0, 0, 1, 0, 0 }, /* MPULED6 */
171 /* PD11 */ { 1, 0, 0, 1, 0, 0 }, /* MPULED5 */
172 /* PD10 */ { 1, 0, 0, 1, 0, 0 }, /* MPULED4 */
173 /* PD9 */ { 1, 1, 0, 1, 0, 0 }, /* RS232_TXD */
174 /* PD8 */ { 1, 1, 0, 0, 0, 0 }, /* RD232_RXD */
175 /* PD7 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
176 /* PD6 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
177 /* PD5 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
178 /* PD4 */ { 1, 0, 0, 0, 0, 0 }, /* not used */
179 /* PD3 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
180 /* PD2 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
181 /* PD1 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
182 /* PD0 */ { 0, 0, 0, 0, 0, 0 } /* pin doesn't exist */
183 }
184 };
185
186 /*********************************************************************/
187 /* NAME: checkboard() - Displays the board type and serial number */
188 /* */
189 /* OUTPUTS: */
190 /* Displays the board type and serial number */
191 /* */
192 /* RETURNS: */
193 /* Always returns 1 */
194 /* */
195 /* RESTRICTIONS/LIMITATIONS: */
196 /* */
197 /* */
198 /*********************************************************************/
199 int checkboard (void)
200 {
201 char buf[64];
202 int i = getenv_f("serial#", buf, sizeof(buf));
203
204 puts ("Board: Advent Networks gw8260\n");
205
206 if (i > 0) {
207 printf("SN: %s\n", buf);
208 }
209 return 0;
210 }
211
212
213 #if defined (CONFIG_SYS_DRAM_TEST)
214 /*********************************************************************/
215 /* NAME: move64() - moves a double word (64-bit) */
216 /* */
217 /* DESCRIPTION: */
218 /* this function performs a double word move from the data at */
219 /* the source pointer to the location at the destination pointer. */
220 /* */
221 /* INPUTS: */
222 /* unsigned long long *src - pointer to data to move */
223 /* */
224 /* OUTPUTS: */
225 /* unsigned long long *dest - pointer to locate to move data */
226 /* */
227 /* RETURNS: */
228 /* None */
229 /* */
230 /* RESTRICTIONS/LIMITATIONS: */
231 /* May cloober fr0. */
232 /* */
233 /*********************************************************************/
234 static void move64 (unsigned long long *src, unsigned long long *dest)
235 {
236 asm ("lfd 0, 0(3)\n\t" /* fpr0 = *scr */
237 "stfd 0, 0(4)" /* *dest = fpr0 */
238 : : : "fr0"); /* Clobbers fr0 */
239 return;
240 }
241
242
243 #if defined (CONFIG_SYS_DRAM_TEST_DATA)
244
245 unsigned long long pattern[] = {
246 0xaaaaaaaaaaaaaaaaULL,
247 0xccccccccccccccccULL,
248 0xf0f0f0f0f0f0f0f0ULL,
249 0xff00ff00ff00ff00ULL,
250 0xffff0000ffff0000ULL,
251 0xffffffff00000000ULL,
252 0x00000000ffffffffULL,
253 0x0000ffff0000ffffULL,
254 0x00ff00ff00ff00ffULL,
255 0x0f0f0f0f0f0f0f0fULL,
256 0x3333333333333333ULL,
257 0x5555555555555555ULL,
258 };
259
260 /*********************************************************************/
261 /* NAME: mem_test_data() - test data lines for shorts and opens */
262 /* */
263 /* DESCRIPTION: */
264 /* Tests data lines for shorts and opens by forcing adjacent data */
265 /* to opposite states. Because the data lines could be routed in */
266 /* an arbitrary manner the must ensure test patterns ensure that */
267 /* every case is tested. By using the following series of binary */
268 /* patterns every combination of adjacent bits is test regardless */
269 /* of routing. */
270 /* */
271 /* ...101010101010101010101010 */
272 /* ...110011001100110011001100 */
273 /* ...111100001111000011110000 */
274 /* ...111111110000000011111111 */
275 /* */
276 /* Carrying this out, gives us six hex patterns as follows: */
277 /* */
278 /* 0xaaaaaaaaaaaaaaaa */
279 /* 0xcccccccccccccccc */
280 /* 0xf0f0f0f0f0f0f0f0 */
281 /* 0xff00ff00ff00ff00 */
282 /* 0xffff0000ffff0000 */
283 /* 0xffffffff00000000 */
284 /* */
285 /* The number test patterns will always be given by: */
286 /* */
287 /* log(base 2)(number data bits) = log2 (64) = 6 */
288 /* */
289 /* To test for short and opens to other signals on our boards. we */
290 /* simply */
291 /* test with the 1's complemnt of the paterns as well. */
292 /* */
293 /* OUTPUTS: */
294 /* Displays failing test pattern */
295 /* */
296 /* RETURNS: */
297 /* 0 - Passed test */
298 /* 1 - Failed test */
299 /* */
300 /* RESTRICTIONS/LIMITATIONS: */
301 /* Assumes only one one SDRAM bank */
302 /* */
303 /*********************************************************************/
304 int mem_test_data (void)
305 {
306 unsigned long long *pmem = (unsigned long long *) CONFIG_SYS_SDRAM_BASE;
307 unsigned long long temp64 = 0;
308 int num_patterns = sizeof (pattern) / sizeof (pattern[0]);
309 int i;
310 unsigned int hi, lo;
311
312 for (i = 0; i < num_patterns; i++) {
313 move64 (&(pattern[i]), pmem);
314 move64 (pmem, &temp64);
315
316 /* hi = (temp64>>32) & 0xffffffff; */
317 /* lo = temp64 & 0xffffffff; */
318 /* printf("\ntemp64 = 0x%08x%08x", hi, lo); */
319
320 hi = (pattern[i] >> 32) & 0xffffffff;
321 lo = pattern[i] & 0xffffffff;
322 /* printf("\npattern[%d] = 0x%08x%08x", i, hi, lo); */
323
324 if (temp64 != pattern[i]) {
325 printf ("\n Data Test Failed, pattern 0x%08x%08x",
326 hi, lo);
327 return 1;
328 }
329 }
330
331 return 0;
332 }
333 #endif /* CONFIG_SYS_DRAM_TEST_DATA */
334
335 #if defined (CONFIG_SYS_DRAM_TEST_ADDRESS)
336 /*********************************************************************/
337 /* NAME: mem_test_address() - test address lines */
338 /* */
339 /* DESCRIPTION: */
340 /* This function performs a test to verify that each word im */
341 /* memory is uniquly addressable. The test sequence is as follows: */
342 /* */
343 /* 1) write the address of each word to each word. */
344 /* 2) verify that each location equals its address */
345 /* */
346 /* OUTPUTS: */
347 /* Displays failing test pattern and address */
348 /* */
349 /* RETURNS: */
350 /* 0 - Passed test */
351 /* 1 - Failed test */
352 /* */
353 /* RESTRICTIONS/LIMITATIONS: */
354 /* */
355 /* */
356 /*********************************************************************/
357 int mem_test_address (void)
358 {
359 volatile unsigned int *pmem =
360 (volatile unsigned int *) CONFIG_SYS_SDRAM_BASE;
361 const unsigned int size = (CONFIG_SYS_SDRAM_SIZE * 1024 * 1024) / 4;
362 unsigned int i;
363
364 /* write address to each location */
365 for (i = 0; i < size; i++) {
366 pmem[i] = i;
367 }
368
369 /* verify each loaction */
370 for (i = 0; i < size; i++) {
371 if (pmem[i] != i) {
372 printf ("\n Address Test Failed at 0x%x", i);
373 return 1;
374 }
375 }
376 return 0;
377 }
378 #endif /* CONFIG_SYS_DRAM_TEST_ADDRESS */
379
380 #if defined (CONFIG_SYS_DRAM_TEST_WALK)
381 /*********************************************************************/
382 /* NAME: mem_march() - memory march */
383 /* */
384 /* DESCRIPTION: */
385 /* Marches up through memory. At each location verifies rmask if */
386 /* read = 1. At each location write wmask if write = 1. Displays */
387 /* failing address and pattern. */
388 /* */
389 /* INPUTS: */
390 /* volatile unsigned long long * base - start address of test */
391 /* unsigned int size - number of dwords(64-bit) to test */
392 /* unsigned long long rmask - read verify mask */
393 /* unsigned long long wmask - wrtie verify mask */
394 /* short read - verifies rmask if read = 1 */
395 /* short write - writes wmask if write = 1 */
396 /* */
397 /* OUTPUTS: */
398 /* Displays failing test pattern and address */
399 /* */
400 /* RETURNS: */
401 /* 0 - Passed test */
402 /* 1 - Failed test */
403 /* */
404 /* RESTRICTIONS/LIMITATIONS: */
405 /* */
406 /* */
407 /*********************************************************************/
408 int mem_march (volatile unsigned long long *base,
409 unsigned int size,
410 unsigned long long rmask,
411 unsigned long long wmask, short read, short write)
412 {
413 unsigned int i;
414 unsigned long long temp = 0;
415 unsigned int hitemp, lotemp, himask, lomask;
416
417 for (i = 0; i < size; i++) {
418 if (read != 0) {
419 /* temp = base[i]; */
420 move64 ((unsigned long long *) &(base[i]), &temp);
421 if (rmask != temp) {
422 hitemp = (temp >> 32) & 0xffffffff;
423 lotemp = temp & 0xffffffff;
424 himask = (rmask >> 32) & 0xffffffff;
425 lomask = rmask & 0xffffffff;
426
427 printf ("\n Walking one's test failed: address = 0x%08x," "\n\texpected 0x%08x%08x, found 0x%08x%08x", i << 3, himask, lomask, hitemp, lotemp);
428 return 1;
429 }
430 }
431 if (write != 0) {
432 /* base[i] = wmask; */
433 move64 (&wmask, (unsigned long long *) &(base[i]));
434 }
435 }
436 return 0;
437 }
438 #endif /* CONFIG_SYS_DRAM_TEST_WALK */
439
440 /*********************************************************************/
441 /* NAME: mem_test_walk() - a simple walking ones test */
442 /* */
443 /* DESCRIPTION: */
444 /* Performs a walking ones through entire physical memory. The */
445 /* test uses as series of memory marches, mem_march(), to verify */
446 /* and write the test patterns to memory. The test sequence is as */
447 /* follows: */
448 /* 1) march writing 0000...0001 */
449 /* 2) march verifying 0000...0001 , writing 0000...0010 */
450 /* 3) repeat step 2 shifting masks left 1 bit each time unitl */
451 /* the write mask equals 1000...0000 */
452 /* 4) march verifying 1000...0000 */
453 /* The test fails if any of the memory marches return a failure. */
454 /* */
455 /* OUTPUTS: */
456 /* Displays which pass on the memory test is executing */
457 /* */
458 /* RETURNS: */
459 /* 0 - Passed test */
460 /* 1 - Failed test */
461 /* */
462 /* RESTRICTIONS/LIMITATIONS: */
463 /* */
464 /* */
465 /*********************************************************************/
466 int mem_test_walk (void)
467 {
468 unsigned long long mask;
469 volatile unsigned long long *pmem =
470 (volatile unsigned long long *) CONFIG_SYS_SDRAM_BASE;
471 const unsigned long size = (CONFIG_SYS_SDRAM_SIZE * 1024 * 1024) / 8;
472
473 unsigned int i;
474
475 mask = 0x01;
476
477 printf ("Initial Pass");
478 mem_march (pmem, size, 0x0, 0x1, 0, 1);
479
480 printf ("\b\b\b\b\b\b\b\b\b\b\b\b");
481 printf (" ");
482 printf ("\b\b\b\b\b\b\b\b\b\b\b\b");
483
484 for (i = 0; i < 63; i++) {
485 printf ("Pass %2d", i + 2);
486 if (mem_march (pmem, size, mask, mask << 1, 1, 1) != 0) {
487 /*printf("mask: 0x%x, pass: %d, ", mask, i); */
488 return 1;
489 }
490 mask = mask << 1;
491 printf ("\b\b\b\b\b\b\b");
492 }
493
494 printf ("Last Pass");
495 if (mem_march (pmem, size, 0, mask, 0, 1) != 0) {
496 /* printf("mask: 0x%x", mask); */
497 return 1;
498 }
499 printf ("\b\b\b\b\b\b\b\b\b");
500 printf (" ");
501 printf ("\b\b\b\b\b\b\b\b\b");
502
503 return 0;
504 }
505
506 /*********************************************************************/
507 /* NAME: testdram() - calls any enabled memory tests */
508 /* */
509 /* DESCRIPTION: */
510 /* Runs memory tests if the environment test variables are set to */
511 /* 'y'. */
512 /* */
513 /* INPUTS: */
514 /* testdramdata - If set to 'y', data test is run. */
515 /* testdramaddress - If set to 'y', address test is run. */
516 /* testdramwalk - If set to 'y', walking ones test is run */
517 /* */
518 /* OUTPUTS: */
519 /* None */
520 /* */
521 /* RETURNS: */
522 /* 0 - Passed test */
523 /* 1 - Failed test */
524 /* */
525 /* RESTRICTIONS/LIMITATIONS: */
526 /* */
527 /* */
528 /*********************************************************************/
529 int testdram (void)
530 {
531 int rundata, runaddress, runwalk;
532
533 rundata = getenv_yesno("testdramdata") == 1;
534 runaddress = getenv_yesno("testdramaddress") == 1;
535 runwalk = getenv_yesno("testdramwalk") == 1;
536
537 if ((rundata == 1) || (runaddress == 1) || (runwalk == 1)) {
538 printf ("Testing RAM ... ");
539 }
540 #ifdef CONFIG_SYS_DRAM_TEST_DATA
541 if (rundata == 1) {
542 if (mem_test_data () == 1) {
543 return 1;
544 }
545 }
546 #endif
547 #ifdef CONFIG_SYS_DRAM_TEST_ADDRESS
548 if (runaddress == 1) {
549 if (mem_test_address () == 1) {
550 return 1;
551 }
552 }
553 #endif
554 #ifdef CONFIG_SYS_DRAM_TEST_WALK
555 if (runwalk == 1) {
556 if (mem_test_walk () == 1) {
557 return 1;
558 }
559 }
560 #endif
561 if ((rundata == 1) || (runaddress == 1) || (runwalk == 1)) {
562 printf ("passed");
563 }
564 return 0;
565
566 }
567 #endif /* CONFIG_SYS_DRAM_TEST */
568
569 /*********************************************************************/
570 /* NAME: initdram() - initializes SDRAM controller */
571 /* */
572 /* DESCRIPTION: */
573 /* Initializes the MPC8260's SDRAM controller. */
574 /* */
575 /* INPUTS: */
576 /* CONFIG_SYS_IMMR - MPC8260 Internal memory map */
577 /* CONFIG_SYS_SDRAM_BASE - Physical start address of SDRAM */
578 /* CONFIG_SYS_PSDMR - SDRAM mode register */
579 /* CONFIG_SYS_MPTPR - Memory refresh timer prescaler register */
580 /* CONFIG_SYS_SDRAM0_SIZE - SDRAM size */
581 /* */
582 /* RETURNS: */
583 /* SDRAM size in bytes */
584 /* */
585 /* RESTRICTIONS/LIMITATIONS: */
586 /* */
587 /* */
588 /*********************************************************************/
589 phys_size_t initdram (int board_type)
590 {
591 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
592 volatile memctl8260_t *memctl = &immap->im_memctl;
593 volatile uchar c = 0, *ramaddr = (uchar *) (CONFIG_SYS_SDRAM_BASE + 0x8);
594 ulong psdmr = CONFIG_SYS_PSDMR;
595 int i;
596
597 /*
598 * Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35):
599 *
600 * "At system reset, initialization software must set up the
601 * programmable parameters in the memory controller banks registers
602 * (ORx, BRx, P/LSDMR). After all memory parameters are configured,
603 * system software should execute the following initialization sequence
604 * for each SDRAM device.
605 *
606 * 1. Issue a PRECHARGE-ALL-BANKS command
607 * 2. Issue eight CBR REFRESH commands
608 * 3. Issue a MODE-SET command to initialize the mode register
609 *
610 * The initial commands are executed by setting P/LSDMR[OP] and
611 * accessing the SDRAM with a single-byte transaction."
612 *
613 * The appropriate BRx/ORx registers have already been set when we
614 * get here. The SDRAM can be accessed at the address CONFIG_SYS_SDRAM_BASE.
615 */
616
617 memctl->memc_psrt = CONFIG_SYS_PSRT;
618 memctl->memc_mptpr = CONFIG_SYS_MPTPR;
619
620 memctl->memc_psdmr = psdmr | PSDMR_OP_PREA;
621 *ramaddr = c;
622
623 memctl->memc_psdmr = psdmr | PSDMR_OP_CBRR;
624 for (i = 0; i < 8; i++) {
625 *ramaddr = c;
626 }
627 memctl->memc_psdmr = psdmr | PSDMR_OP_MRW;
628 *ramaddr = c;
629
630 memctl->memc_psdmr = psdmr | PSDMR_OP_NORM | PSDMR_RFEN;
631 *ramaddr = c;
632
633 /* return total ram size */
634 return (CONFIG_SYS_SDRAM0_SIZE * 1024 * 1024);
635 }
636
637 /*********************************************************************/
638 /* End of gw8260.c */
639 /*********************************************************************/
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