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TsiChung Liew6d33c6a2008-07-23 17:11:47 -05001/*
2 * (C) Copyright 2000-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
7 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02008 * SPDX-License-Identifier: GPL-2.0+
TsiChung Liew6d33c6a2008-07-23 17:11:47 -05009 */
10
11#include <common.h>
12
13#include <asm/immap.h>
14
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020015#ifndef CONFIG_SYS_FLASH_CFI
TsiChung Liew6d33c6a2008-07-23 17:11:47 -050016typedef unsigned short FLASH_PORT_WIDTH;
17typedef volatile unsigned short FLASH_PORT_WIDTHV;
18
19#define FPW FLASH_PORT_WIDTH
20#define FPWV FLASH_PORT_WIDTHV
21
22#define FLASH_CYCLE1 0x5555
23#define FLASH_CYCLE2 0x2aaa
24
25#define SYNC __asm__("nop")
26
27/*-----------------------------------------------------------------------
28 * Functions
29 */
30
31ulong flash_get_size(FPWV * addr, flash_info_t * info);
32int flash_get_offsets(ulong base, flash_info_t * info);
33int write_word(flash_info_t * info, FPWV * dest, u16 data);
Tom Rinib411f2a2017-05-08 22:14:35 -040034static inline void spin_wheel(void);
TsiChung Liew6d33c6a2008-07-23 17:11:47 -050035
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020036flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
TsiChung Liew6d33c6a2008-07-23 17:11:47 -050037
38ulong flash_init(void)
39{
40 ulong size = 0;
41 ulong fbase = 0;
42
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020043 fbase = (ulong) CONFIG_SYS_FLASH_BASE;
TsiChung Liew6d33c6a2008-07-23 17:11:47 -050044 flash_get_size((FPWV *) fbase, &flash_info[0]);
45 flash_get_offsets((ulong) fbase, &flash_info[0]);
46 fbase += flash_info[0].size;
47 size += flash_info[0].size;
48
49 /* Protect monitor and environment sectors */
50 flash_protect(FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020051 CONFIG_SYS_MONITOR_BASE,
52 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]);
TsiChung Liew6d33c6a2008-07-23 17:11:47 -050053
54 return size;
55}
56
57int flash_get_offsets(ulong base, flash_info_t * info)
58{
Masahiro Yamada61f06b12014-07-22 10:57:18 +090059 int i;
TsiChung Liew6d33c6a2008-07-23 17:11:47 -050060
61 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
62
63 info->start[0] = base;
Masahiro Yamada61f06b12014-07-22 10:57:18 +090064 info->protect[0] = 0;
65 for (i = 1; i < CONFIG_SYS_SST_SECT; i++) {
66 info->start[i] = info->start[i - 1]
67 + CONFIG_SYS_SST_SECTSZ;
68 info->protect[i] = 0;
TsiChung Liew6d33c6a2008-07-23 17:11:47 -050069 }
70 }
71
72 return ERR_OK;
73}
74
75void flash_print_info(flash_info_t * info)
76{
77 int i;
78
79 switch (info->flash_id & FLASH_VENDMASK) {
80 case FLASH_MAN_SST:
81 printf("SST ");
82 break;
83 default:
84 printf("Unknown Vendor ");
85 break;
86 }
87
88 switch (info->flash_id & FLASH_TYPEMASK) {
89 case FLASH_SST6401B:
90 printf("SST39VF6401B\n");
91 break;
92 default:
93 printf("Unknown Chip Type\n");
94 return;
95 }
96
97 if (info->size > 0x100000) {
98 int remainder;
99
100 printf(" Size: %ld", info->size >> 20);
101
102 remainder = (info->size % 0x100000);
103 if (remainder) {
104 remainder >>= 10;
105 remainder = (int)((float)
106 (((float)remainder / (float)1024) *
107 10000));
108 printf(".%d ", remainder);
109 }
110
111 printf("MB in %d Sectors\n", info->sector_count);
112 } else
113 printf(" Size: %ld KB in %d Sectors\n",
114 info->size >> 10, info->sector_count);
115
116 printf(" Sector Start Addresses:");
117 for (i = 0; i < info->sector_count; ++i) {
118 if ((i % 5) == 0)
119 printf("\n ");
120 printf(" %08lX%s",
121 info->start[i], info->protect[i] ? " (RO)" : " ");
122 }
123 printf("\n");
124}
125
126/*
127 * The following code cannot be run from FLASH!
128 */
129ulong flash_get_size(FPWV * addr, flash_info_t * info)
130{
131 u16 value;
132
133 addr[FLASH_CYCLE1] = (FPWV) 0x00AA00AA; /* for Atmel, Intel ignores this */
134 addr[FLASH_CYCLE2] = (FPWV) 0x00550055; /* for Atmel, Intel ignores this */
135 addr[FLASH_CYCLE1] = (FPWV) 0x00900090; /* selects Intel or Atmel */
136
137 switch (addr[0] & 0xffff) {
138 case (u8) SST_MANUFACT:
139 info->flash_id = FLASH_MAN_SST;
140 value = addr[1];
141 break;
142 default:
143 printf("Unknown Flash\n");
144 info->flash_id = FLASH_UNKNOWN;
145 info->sector_count = 0;
146 info->size = 0;
147
148 *addr = (FPW) 0x00F000F0;
149 return (0); /* no or unknown flash */
150 }
151
152 switch (value) {
153 case (u16) SST_ID_xF6401B:
154 info->flash_id += FLASH_SST6401B;
155 break;
156 default:
157 info->flash_id = FLASH_UNKNOWN;
158 break;
159 }
160
161 info->sector_count = 0;
162 info->size = 0;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200163 info->sector_count = CONFIG_SYS_SST_SECT;
164 info->size = CONFIG_SYS_SST_SECT * CONFIG_SYS_SST_SECTSZ;
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500165
166 /* reset ID mode */
167 *addr = (FPWV) 0x00F000F0;
168
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200169 if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500170 printf("** ERROR: sector count %d > max (%d) **\n",
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200171 info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
172 info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500173 }
174
175 return (info->size);
176}
177
178int flash_erase(flash_info_t * info, int s_first, int s_last)
179{
180 FPWV *addr;
181 int flag, prot, sect, count;
Masahiro Yamadae6af3852014-04-15 13:26:34 +0900182 ulong type, start;
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500183 int rcode = 0, flashtype = 0;
184
185 if ((s_first < 0) || (s_first > s_last)) {
186 if (info->flash_id == FLASH_UNKNOWN)
187 printf("- missing\n");
188 else
189 printf("- no sectors to erase\n");
190 return 1;
191 }
192
193 type = (info->flash_id & FLASH_VENDMASK);
194
195 switch (type) {
196 case FLASH_MAN_SST:
197 flashtype = 1;
198 break;
199 default:
200 type = (info->flash_id & FLASH_VENDMASK);
201 printf("Can't erase unknown flash type %08lx - aborted\n",
202 info->flash_id);
203 return 1;
204 }
205
206 prot = 0;
207 for (sect = s_first; sect <= s_last; ++sect) {
208 if (info->protect[sect]) {
209 prot++;
210 }
211 }
212
213 if (prot)
214 printf("- Warning: %d protected sectors will not be erased!\n",
215 prot);
216 else
217 printf("\n");
218
219 flag = disable_interrupts();
220
221 start = get_timer(0);
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500222
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200223 if ((s_last - s_first) == (CONFIG_SYS_SST_SECT - 1)) {
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500224 if (prot == 0) {
225 addr = (FPWV *) info->start[0];
226
227 addr[FLASH_CYCLE1] = 0x00AA; /* unlock */
228 addr[FLASH_CYCLE2] = 0x0055; /* unlock */
229 addr[FLASH_CYCLE1] = 0x0080; /* erase mode */
230 addr[FLASH_CYCLE1] = 0x00AA; /* unlock */
231 addr[FLASH_CYCLE2] = 0x0055; /* unlock */
232 *addr = 0x0030; /* erase chip */
233
234 count = 0;
235 start = get_timer(0);
236
237 while ((*addr & 0x0080) != 0x0080) {
238 if (count++ > 0x10000) {
239 spin_wheel();
240 count = 0;
241 }
242
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200243 if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500244 printf("Timeout\n");
245 *addr = 0x00F0; /* reset to read mode */
246
247 return 1;
248 }
249 }
250
251 *addr = 0x00F0; /* reset to read mode */
252
253 printf("\b. done\n");
254
255 if (flag)
256 enable_interrupts();
257
258 return 0;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200259 } else if (prot == CONFIG_SYS_SST_SECT) {
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500260 return 1;
261 }
262 }
263
264 /* Start erase on unprotected sectors */
265 for (sect = s_first; sect <= s_last; sect++) {
266 if (info->protect[sect] == 0) { /* not protected */
267
268 addr = (FPWV *) (info->start[sect]);
269
270 printf(".");
271
272 /* arm simple, non interrupt dependent timer */
273 start = get_timer(0);
274
275 switch (flashtype) {
276 case 1:
277 {
278 FPWV *base; /* first address in bank */
279
280 flag = disable_interrupts();
281
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200282 base = (FPWV *) (CONFIG_SYS_FLASH_BASE); /* First sector */
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500283
284 base[FLASH_CYCLE1] = 0x00AA; /* unlock */
285 base[FLASH_CYCLE2] = 0x0055; /* unlock */
286 base[FLASH_CYCLE1] = 0x0080; /* erase mode */
287 base[FLASH_CYCLE1] = 0x00AA; /* unlock */
288 base[FLASH_CYCLE2] = 0x0055; /* unlock */
289 *addr = 0x0050; /* erase sector */
290
291 if (flag)
292 enable_interrupts();
293
294 while ((*addr & 0x0080) != 0x0080) {
295 if (get_timer(start) >
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200296 CONFIG_SYS_FLASH_ERASE_TOUT) {
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500297 printf("Timeout\n");
298 *addr = 0x00F0; /* reset to read mode */
299
300 rcode = 1;
301 break;
302 }
303 }
304
305 *addr = 0x00F0; /* reset to read mode */
306 break;
307 }
308 } /* switch (flashtype) */
309 }
310 }
311 printf(" done\n");
312
313 if (flag)
314 enable_interrupts();
315
316 return rcode;
317}
318
319int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
320{
321 ulong wp, count;
322 u16 data;
Masahiro Yamadae6af3852014-04-15 13:26:34 +0900323 int rc;
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500324
325 if (info->flash_id == FLASH_UNKNOWN)
326 return 4;
327
328 /* get lower word aligned address */
329 wp = addr;
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500330
331 /* handle unaligned start bytes */
332 if (wp & 1) {
333 data = *((FPWV *) wp);
334 data = (data << 8) | *src;
335
336 if ((rc = write_word(info, (FPWV *) wp, data)) != 0)
337 return (rc);
338
339 wp++;
340 cnt -= 1;
341 src++;
342 }
343
344 while (cnt >= 2) {
345 /*
346 * handle word aligned part
347 */
348 count = 0;
349 data = *((FPWV *) src);
350
351 if ((rc = write_word(info, (FPWV *) wp, data)) != 0)
352 return (rc);
353
354 wp += 2;
355 src += 2;
356 cnt -= 2;
357
358 if (count++ > 0x800) {
359 spin_wheel();
360 count = 0;
361 }
362 }
363 /* handle word aligned part */
364 if (cnt) {
365 /* handle word aligned part */
366 count = 0;
367 data = *((FPWV *) wp);
368
369 data = (data & 0x00FF) | (*src << 8);
370
371 if ((rc = write_word(info, (FPWV *) wp, data)) != 0)
372 return (rc);
373
374 wp++;
375 src++;
376 cnt -= 1;
377 if (count++ > 0x800) {
378 spin_wheel();
379 count = 0;
380 }
381 }
382
383 if (cnt == 0)
384 return ERR_OK;
385
386 return ERR_OK;
387}
388
389/*-----------------------------------------------------------------------
390 * Write a word to Flash
391 * A word is 16 bits, whichever the bus width of the flash bank
392 * (not an individual chip) is.
393 *
394 * returns:
395 * 0 - OK
396 * 1 - write timeout
397 * 2 - Flash not erased
398 */
399int write_word(flash_info_t * info, FPWV * dest, u16 data)
400{
401 ulong start;
402 int flag;
403 int res = 0; /* result, assume success */
404 FPWV *base; /* first address in flash bank */
405
406 /* Check if Flash is (sufficiently) erased */
407 if ((*dest & (u8) data) != (u8) data) {
408 return (2);
409 }
410
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200411 base = (FPWV *) (CONFIG_SYS_FLASH_BASE);
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500412
413 /* Disable interrupts which might cause a timeout here */
414 flag = disable_interrupts();
415
416 base[FLASH_CYCLE1] = (u8) 0x00AA00AA; /* unlock */
417 base[FLASH_CYCLE2] = (u8) 0x00550055; /* unlock */
418 base[FLASH_CYCLE1] = (u8) 0x00A000A0; /* selects program mode */
419
420 *dest = data; /* start programming the data */
421
422 /* re-enable interrupts if necessary */
423 if (flag)
424 enable_interrupts();
425
426 start = get_timer(0);
427
428 /* data polling for D7 */
429 while (res == 0
430 && (*dest & (u8) 0x00800080) != (data & (u8) 0x00800080)) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200431 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500432 *dest = (u8) 0x00F000F0; /* reset bank */
433 res = 1;
434 }
435 }
436
437 *dest++ = (u8) 0x00F000F0; /* reset bank */
438
439 return (res);
440}
441
Tom Rinib411f2a2017-05-08 22:14:35 -0400442static inline void spin_wheel(void)
TsiChung Liew6d33c6a2008-07-23 17:11:47 -0500443{
444 static int p = 0;
445 static char w[] = "\\/-";
446
447 printf("\010%c", w[p]);
448 (++p == 3) ? (p = 0) : 0;
449}
450
451#endif