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rename CFG_ macros to CONFIG_SYS
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1 /*
2 * (C) Copyright 2001
3 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
4 *
5 * (C) Copyright 2001
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27 #include <common.h>
28 #include <linux/byteorder/swab.h>
29
30
31 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
32
33 /* Board support for 1 or 2 flash devices */
34 #undef FLASH_PORT_WIDTH32
35 #define FLASH_PORT_WIDTH16
36
37 #ifdef FLASH_PORT_WIDTH16
38 #define FLASH_PORT_WIDTH ushort
39 #define FLASH_PORT_WIDTHV vu_short
40 #define SWAP(x) __swab16(x)
41 #else
42 #define FLASH_PORT_WIDTH ulong
43 #define FLASH_PORT_WIDTHV vu_long
44 #define SWAP(x) __swab32(x)
45 #endif
46
47 #define FPW FLASH_PORT_WIDTH
48 #define FPWV FLASH_PORT_WIDTHV
49
50 #define mb() __asm__ __volatile__ ("" : : : "memory")
51
52 /*-----------------------------------------------------------------------
53 * Functions
54 */
55 static ulong flash_get_size (FPW *addr, flash_info_t *info);
56 static int write_data (flash_info_t *info, ulong dest, FPW data);
57 static void flash_get_offsets (ulong base, flash_info_t *info);
58 void inline spin_wheel(void);
59
60 /*-----------------------------------------------------------------------
61 */
62
63 unsigned long flash_init (void)
64 {
65 int i;
66 ulong size = 0;
67
68 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++)
69 {
70 switch (i)
71 {
72 case 0:
73 flash_get_size((FPW *)PHYS_FLASH_1, &flash_info[i]);
74 flash_get_offsets(PHYS_FLASH_1, &flash_info[i]);
75 break;
76 default:
77 panic("configured too many flash banks!\n");
78 break;
79 }
80 size += flash_info[i].size;
81 }
82
83 /* Protect monitor and environment sectors
84 */
85 flash_protect(FLAG_PROTECT_SET,
86 CONFIG_SYS_FLASH_BASE,
87 CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
88 &flash_info[0]);
89
90 flash_protect(FLAG_PROTECT_SET,
91 CONFIG_ENV_ADDR,
92 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
93 &flash_info[0]);
94
95 return size;
96 }
97
98 /*-----------------------------------------------------------------------
99 */
100 static void flash_get_offsets (ulong base, flash_info_t *info)
101 {
102 int i;
103
104 if (info->flash_id == FLASH_UNKNOWN) {
105 return;
106 }
107
108 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
109 for (i = 0; i < info->sector_count; i++) {
110 info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE);
111 info->protect[i] = 0;
112 }
113 }
114 }
115
116 /*-----------------------------------------------------------------------
117 */
118 void flash_print_info (flash_info_t *info)
119 {
120 int i;
121
122 if (info->flash_id == FLASH_UNKNOWN) {
123 printf ("missing or unknown FLASH type\n");
124 return;
125 }
126
127 switch (info->flash_id & FLASH_VENDMASK) {
128 case FLASH_MAN_INTEL: printf ("INTEL "); break;
129 default: printf ("Unknown Vendor "); break;
130 }
131
132 switch (info->flash_id & FLASH_TYPEMASK) {
133 case FLASH_28F128J3A:
134 printf ("28F128J3A\n"); break;
135 default: printf ("Unknown Chip Type\n"); break;
136 }
137
138 printf (" Size: %ld MB in %d Sectors\n",
139 info->size >> 20, info->sector_count);
140
141 printf (" Sector Start Addresses:");
142 for (i=0; i<info->sector_count; ++i) {
143 if ((i % 5) == 0)
144 printf ("\n ");
145 printf (" %08lX%s",
146 info->start[i],
147 info->protect[i] ? " (RO)" : " "
148 );
149 }
150 printf ("\n");
151 return;
152 }
153
154 /*
155 * The following code cannot be run from FLASH!
156 */
157 static ulong flash_get_size (FPW *addr, flash_info_t *info)
158 {
159 volatile FPW value;
160 /* Write auto select command: read Manufacturer ID */
161 addr[0x5555] = (FPW)0x00AA00AA;
162 addr[0x2AAA] = (FPW)0x00550055;
163 addr[0x5555] = (FPW)0x00900090;
164
165 mb();
166 value = addr[0];
167
168 switch (value) {
169
170 case (FPW)INTEL_MANUFACT:
171 info->flash_id = FLASH_MAN_INTEL;
172 break;
173
174 default:
175 info->flash_id = FLASH_UNKNOWN;
176 info->sector_count = 0;
177 info->size = 0;
178 addr[0] = (FPW)0x00FF00FF; /* restore read mode */
179 return (0); /* no or unknown flash */
180 }
181
182 mb();
183 value = addr[1]; /* device ID */
184 switch (value) {
185
186 case (FPW)INTEL_ID_28F128J3A:
187 info->flash_id += FLASH_28F128J3A;
188 info->sector_count = 128;
189 info->size = 0x02000000;
190 break; /* => 16 MB */
191
192 default:
193 info->flash_id = FLASH_UNKNOWN;
194 break;
195 }
196
197 if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
198 printf ("** ERROR: sector count %d > max (%d) **\n",
199 info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
200 info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
201 }
202
203 addr[0] = (FPW)0x00FF00FF; /* restore read mode */
204
205 return (info->size);
206 }
207
208
209 /*-----------------------------------------------------------------------
210 */
211
212 int flash_erase (flash_info_t *info, int s_first, int s_last)
213 {
214 int flag, prot, sect;
215 ulong type, start, last;
216 int rcode = 0;
217
218 if ((s_first < 0) || (s_first > s_last)) {
219 if (info->flash_id == FLASH_UNKNOWN) {
220 printf ("- missing\n");
221 } else {
222 printf ("- no sectors to erase\n");
223 }
224 return 1;
225 }
226
227 type = (info->flash_id & FLASH_VENDMASK);
228 if ((type != FLASH_MAN_INTEL)) {
229 printf ("Can't erase unknown flash type %08lx - aborted\n",
230 info->flash_id);
231 return 1;
232 }
233
234 prot = 0;
235 for (sect=s_first; sect<=s_last; ++sect) {
236 if (info->protect[sect]) {
237 prot++;
238 }
239 }
240
241 if (prot) {
242 printf ("- Warning: %d protected sectors will not be erased!\n",
243 prot);
244 } else {
245 printf ("\n");
246 }
247
248 start = get_timer (0);
249 last = start;
250
251 /* Disable interrupts which might cause a timeout here */
252 flag = disable_interrupts();
253
254 /* Start erase on unprotected sectors */
255 for (sect = s_first; sect<=s_last; sect++) {
256 if (info->protect[sect] == 0) { /* not protected */
257 FPWV *addr = (FPWV *)(info->start[sect]);
258 FPW status;
259
260 printf("Erasing sector %2d ... ", sect);
261
262 /* arm simple, non interrupt dependent timer */
263 reset_timer_masked();
264
265 *addr = (FPW)0x00500050; /* clear status register */
266 *addr = (FPW)0x00200020; /* erase setup */
267 *addr = (FPW)0x00D000D0; /* erase confirm */
268
269 while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) {
270 if (get_timer_masked() > CONFIG_SYS_FLASH_ERASE_TOUT) {
271 printf ("Timeout\n");
272 *addr = (FPW)0x00B000B0; /* suspend erase */
273 *addr = (FPW)0x00FF00FF; /* reset to read mode */
274 rcode = 1;
275 break;
276 }
277 }
278
279 *addr = (FPW)0x00500050; /* clear status register cmd. */
280 *addr = (FPW)0x00FF00FF; /* resest to read mode */
281
282 printf (" done\n");
283 }
284 }
285 return rcode;
286 }
287
288 /*-----------------------------------------------------------------------
289 * Copy memory to flash, returns:
290 * 0 - OK
291 * 1 - write timeout
292 * 2 - Flash not erased
293 * 4 - Flash not identified
294 */
295
296 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
297 {
298 ulong cp, wp;
299 FPW data;
300 int count, i, l, rc, port_width;
301
302 if (info->flash_id == FLASH_UNKNOWN) {
303 return 4;
304 }
305 /* get lower word aligned address */
306 #ifdef FLASH_PORT_WIDTH16
307 wp = (addr & ~1);
308 port_width = 2;
309 #else
310 wp = (addr & ~3);
311 port_width = 4;
312 #endif
313
314 /*
315 * handle unaligned start bytes
316 */
317 if ((l = addr - wp) != 0) {
318 data = 0;
319 for (i=0, cp=wp; i<l; ++i, ++cp) {
320 data = (data << 8) | (*(uchar *)cp);
321 }
322 for (; i<port_width && cnt>0; ++i) {
323 data = (data << 8) | *src++;
324 --cnt;
325 ++cp;
326 }
327 for (; cnt==0 && i<port_width; ++i, ++cp) {
328 data = (data << 8) | (*(uchar *)cp);
329 }
330
331 if ((rc = write_data(info, wp, SWAP(data))) != 0) {
332 return (rc);
333 }
334 wp += port_width;
335 }
336
337 /*
338 * handle word aligned part
339 */
340 count = 0;
341 while (cnt >= port_width) {
342 data = 0;
343 for (i=0; i<port_width; ++i) {
344 data = (data << 8) | *src++;
345 }
346 if ((rc = write_data(info, wp, SWAP(data))) != 0) {
347 return (rc);
348 }
349 wp += port_width;
350 cnt -= port_width;
351 if (count++ > 0x800)
352 {
353 spin_wheel();
354 count = 0;
355 }
356 }
357
358 if (cnt == 0) {
359 return (0);
360 }
361
362 /*
363 * handle unaligned tail bytes
364 */
365 data = 0;
366 for (i=0, cp=wp; i<port_width && cnt>0; ++i, ++cp) {
367 data = (data << 8) | *src++;
368 --cnt;
369 }
370 for (; i<port_width; ++i, ++cp) {
371 data = (data << 8) | (*(uchar *)cp);
372 }
373
374 return (write_data(info, wp, SWAP(data)));
375 }
376
377 /*-----------------------------------------------------------------------
378 * Write a word or halfword to Flash, returns:
379 * 0 - OK
380 * 1 - write timeout
381 * 2 - Flash not erased
382 */
383 static int write_data (flash_info_t *info, ulong dest, FPW data)
384 {
385 FPWV *addr = (FPWV *)dest;
386 ulong status;
387 int flag;
388
389 /* Check if Flash is (sufficiently) erased */
390 if ((*addr & data) != data) {
391 printf("not erased at %08lx (%x)\n",(ulong)addr,*addr);
392 return (2);
393 }
394 /* Disable interrupts which might cause a timeout here */
395 flag = disable_interrupts();
396
397 *addr = (FPW)0x00400040; /* write setup */
398 *addr = data;
399
400 /* arm simple, non interrupt dependent timer */
401 reset_timer_masked();
402
403 /* wait while polling the status register */
404 while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) {
405 if (get_timer_masked() > CONFIG_SYS_FLASH_WRITE_TOUT) {
406 *addr = (FPW)0x00FF00FF; /* restore read mode */
407 return (1);
408 }
409 }
410
411 *addr = (FPW)0x00FF00FF; /* restore read mode */
412
413 return (0);
414 }
415
416 void inline
417 spin_wheel(void)
418 {
419 static int p=0;
420 static char w[] = "\\/-";
421
422 printf("\010%c", w[p]);
423 (++p == 3) ? (p = 0) : 0;
424 }