blob: ba82892dde557e22b1ea97b1e75828e17460c4ed [file] [log] [blame]
wdenkea8015b2002-10-26 16:43:06 +00001/*
wdenkdb2f721f2003-03-06 00:58:30 +00002 * (C) Copyright 2001
wdenkea8015b2002-10-26 16:43:06 +00003 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
4 *
wdenkdb2f721f2003-03-06 00:58:30 +00005 * (C) Copyright 2001
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
wdenkea8015b2002-10-26 16:43:06 +00007 *
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>
wdenkdb2f721f2003-03-06 00:58:30 +000028#include <linux/byteorder/swab.h>
wdenkea8015b2002-10-26 16:43:06 +000029
wdenkea8015b2002-10-26 16:43:06 +000030
wdenk06d01db2003-03-14 20:47:52 +000031flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
wdenkea8015b2002-10-26 16:43:06 +000032
wdenkdb2f721f2003-03-06 00:58:30 +000033/* Board support for 1 or 2 flash devices */
34#define FLASH_PORT_WIDTH32
35#undef 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 */
55static ulong flash_get_size (FPW *addr, flash_info_t *info);
wdenk06d01db2003-03-14 20:47:52 +000056static int write_data (flash_info_t *info, ulong dest, FPW data);
57static void flash_get_offsets (ulong base, flash_info_t *info);
58void inline spin_wheel (void);
wdenkea8015b2002-10-26 16:43:06 +000059
60/*-----------------------------------------------------------------------
61 */
62
wdenkdb2f721f2003-03-06 00:58:30 +000063unsigned long flash_init (void)
wdenkea8015b2002-10-26 16:43:06 +000064{
wdenk06d01db2003-03-14 20:47:52 +000065 int i;
66 ulong size = 0;
wdenkea8015b2002-10-26 16:43:06 +000067
wdenk06d01db2003-03-14 20:47:52 +000068 for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
69 switch (i) {
70 case 0:
71 flash_get_size ((FPW *) PHYS_FLASH_1, &flash_info[i]);
72 flash_get_offsets (PHYS_FLASH_1, &flash_info[i]);
73 break;
74 case 1:
75 flash_get_size ((FPW *) PHYS_FLASH_2, &flash_info[i]);
76 flash_get_offsets (PHYS_FLASH_2, &flash_info[i]);
77 break;
78 default:
wdenk5f535fe2003-09-18 09:21:33 +000079 panic ("configured too many flash banks!\n");
wdenk06d01db2003-03-14 20:47:52 +000080 break;
81 }
82 size += flash_info[i].size;
83 }
wdenkea8015b2002-10-26 16:43:06 +000084
wdenk06d01db2003-03-14 20:47:52 +000085 /* Protect monitor and environment sectors
86 */
87 flash_protect ( FLAG_PROTECT_SET,
88 CFG_FLASH_BASE,
wdenk3b57fe02003-05-30 12:48:29 +000089 CFG_FLASH_BASE + monitor_flash_len - 1,
wdenk06d01db2003-03-14 20:47:52 +000090 &flash_info[0] );
wdenkea8015b2002-10-26 16:43:06 +000091
wdenk06d01db2003-03-14 20:47:52 +000092 flash_protect ( FLAG_PROTECT_SET,
93 CFG_ENV_ADDR,
94 CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0] );
wdenkea8015b2002-10-26 16:43:06 +000095
wdenk06d01db2003-03-14 20:47:52 +000096 return size;
wdenkea8015b2002-10-26 16:43:06 +000097}
98
99/*-----------------------------------------------------------------------
100 */
wdenkdb2f721f2003-03-06 00:58:30 +0000101static void flash_get_offsets (ulong base, flash_info_t *info)
102{
103 int i;
104
105 if (info->flash_id == FLASH_UNKNOWN) {
106 return;
107 }
108
109 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
110 for (i = 0; i < info->sector_count; i++) {
111 info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE);
112 info->protect[i] = 0;
113 }
114 }
115}
116
117/*-----------------------------------------------------------------------
118 */
wdenk06d01db2003-03-14 20:47:52 +0000119void flash_print_info (flash_info_t *info)
wdenkea8015b2002-10-26 16:43:06 +0000120{
wdenkdb2f721f2003-03-06 00:58:30 +0000121 int i;
wdenkea8015b2002-10-26 16:43:06 +0000122
wdenkdb2f721f2003-03-06 00:58:30 +0000123 if (info->flash_id == FLASH_UNKNOWN) {
124 printf ("missing or unknown FLASH type\n");
125 return;
wdenk06d01db2003-03-14 20:47:52 +0000126 }
wdenkea8015b2002-10-26 16:43:06 +0000127
wdenkdb2f721f2003-03-06 00:58:30 +0000128 switch (info->flash_id & FLASH_VENDMASK) {
wdenk06d01db2003-03-14 20:47:52 +0000129 case FLASH_MAN_INTEL:
130 printf ("INTEL ");
131 break;
132 default:
133 printf ("Unknown Vendor ");
134 break;
wdenkdb2f721f2003-03-06 00:58:30 +0000135 }
136
137 switch (info->flash_id & FLASH_TYPEMASK) {
wdenk06d01db2003-03-14 20:47:52 +0000138 case FLASH_28F128J3A:
139 printf ("28F128J3A\n");
140 break;
141 default:
142 printf ("Unknown Chip Type\n");
143 break;
144 }
wdenkea8015b2002-10-26 16:43:06 +0000145
wdenkdb2f721f2003-03-06 00:58:30 +0000146 printf (" Size: %ld MB in %d Sectors\n",
wdenk06d01db2003-03-14 20:47:52 +0000147 info->size >> 20, info->sector_count);
wdenkea8015b2002-10-26 16:43:06 +0000148
wdenkdb2f721f2003-03-06 00:58:30 +0000149 printf (" Sector Start Addresses:");
wdenk06d01db2003-03-14 20:47:52 +0000150 for (i = 0; i < info->sector_count; ++i) {
151 if ((i % 5) == 0)
152 printf ("\n ");
wdenkdb2f721f2003-03-06 00:58:30 +0000153 printf (" %08lX%s",
154 info->start[i],
wdenk06d01db2003-03-14 20:47:52 +0000155 info->protect[i] ? " (RO)" : " ");
156 }
157 printf ("\n");
wdenkdb2f721f2003-03-06 00:58:30 +0000158 return;
159}
160
161/*
162 * The following code cannot be run from FLASH!
163 */
164static ulong flash_get_size (FPW *addr, flash_info_t *info)
165{
166 volatile FPW value;
167
168 /* Write auto select command: read Manufacturer ID */
wdenk06d01db2003-03-14 20:47:52 +0000169 addr[0x5555] = (FPW) 0x00AA00AA;
170 addr[0x2AAA] = (FPW) 0x00550055;
171 addr[0x5555] = (FPW) 0x00900090;
wdenkdb2f721f2003-03-06 00:58:30 +0000172
wdenk06d01db2003-03-14 20:47:52 +0000173 mb ();
wdenkdb2f721f2003-03-06 00:58:30 +0000174 value = addr[0];
175
wdenk06d01db2003-03-14 20:47:52 +0000176 switch (value) {
wdenkdb2f721f2003-03-06 00:58:30 +0000177
wdenk06d01db2003-03-14 20:47:52 +0000178 case (FPW) INTEL_MANUFACT:
179 info->flash_id = FLASH_MAN_INTEL;
180 break;
wdenkdb2f721f2003-03-06 00:58:30 +0000181
182 default:
183 info->flash_id = FLASH_UNKNOWN;
184 info->sector_count = 0;
185 info->size = 0;
wdenk06d01db2003-03-14 20:47:52 +0000186 addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
187 return (0); /* no or unknown flash */
wdenkdb2f721f2003-03-06 00:58:30 +0000188 }
189
wdenk06d01db2003-03-14 20:47:52 +0000190 mb ();
191 value = addr[1]; /* device ID */
wdenkdb2f721f2003-03-06 00:58:30 +0000192
wdenk06d01db2003-03-14 20:47:52 +0000193 switch (value) {
wdenkdb2f721f2003-03-06 00:58:30 +0000194
wdenk06d01db2003-03-14 20:47:52 +0000195 case (FPW) INTEL_ID_28F128J3A:
196 info->flash_id += FLASH_28F128J3A;
197 info->sector_count = 128;
198 info->size = 0x02000000;
199 break; /* => 16 MB */
wdenkdb2f721f2003-03-06 00:58:30 +0000200
201 default:
202 info->flash_id = FLASH_UNKNOWN;
203 break;
204 }
205
206 if (info->sector_count > CFG_MAX_FLASH_SECT) {
207 printf ("** ERROR: sector count %d > max (%d) **\n",
208 info->sector_count, CFG_MAX_FLASH_SECT);
209 info->sector_count = CFG_MAX_FLASH_SECT;
wdenk06d01db2003-03-14 20:47:52 +0000210 }
wdenkea8015b2002-10-26 16:43:06 +0000211
wdenk06d01db2003-03-14 20:47:52 +0000212 addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
wdenkdb2f721f2003-03-06 00:58:30 +0000213
214 return (info->size);
wdenkea8015b2002-10-26 16:43:06 +0000215}
216
wdenkdb2f721f2003-03-06 00:58:30 +0000217
wdenkea8015b2002-10-26 16:43:06 +0000218/*-----------------------------------------------------------------------
219 */
220
wdenk06d01db2003-03-14 20:47:52 +0000221int flash_erase (flash_info_t *info, int s_first, int s_last)
wdenkea8015b2002-10-26 16:43:06 +0000222{
wdenk06d01db2003-03-14 20:47:52 +0000223 int flag, prot, sect;
224 ulong type, start, last;
wdenkdb2f721f2003-03-06 00:58:30 +0000225 int rcode = 0;
wdenkea8015b2002-10-26 16:43:06 +0000226
wdenk06d01db2003-03-14 20:47:52 +0000227 if ((s_first < 0) || (s_first > s_last)) {
wdenkdb2f721f2003-03-06 00:58:30 +0000228 if (info->flash_id == FLASH_UNKNOWN) {
229 printf ("- missing\n");
230 } else {
231 printf ("- no sectors to erase\n");
232 }
233 return 1;
wdenk06d01db2003-03-14 20:47:52 +0000234 }
wdenkea8015b2002-10-26 16:43:06 +0000235
wdenkdb2f721f2003-03-06 00:58:30 +0000236 type = (info->flash_id & FLASH_VENDMASK);
237 if ((type != FLASH_MAN_INTEL)) {
238 printf ("Can't erase unknown flash type %08lx - aborted\n",
239 info->flash_id);
240 return 1;
wdenkea8015b2002-10-26 16:43:06 +0000241 }
wdenk06d01db2003-03-14 20:47:52 +0000242
243 prot = 0;
244 for (sect = s_first; sect <= s_last; ++sect) {
245 if (info->protect[sect]) {
246 prot++;
247 }
248 }
wdenkea8015b2002-10-26 16:43:06 +0000249
wdenkdb2f721f2003-03-06 00:58:30 +0000250 if (prot) {
251 printf ("- Warning: %d protected sectors will not be erased!\n",
252 prot);
253 } else {
254 printf ("\n");
255 }
256
257 start = get_timer (0);
wdenk06d01db2003-03-14 20:47:52 +0000258 last = start;
wdenkdb2f721f2003-03-06 00:58:30 +0000259
wdenk06d01db2003-03-14 20:47:52 +0000260 /* Disable interrupts which might cause a timeout here */
261 flag = disable_interrupts ();
wdenkea8015b2002-10-26 16:43:06 +0000262
wdenk06d01db2003-03-14 20:47:52 +0000263 /* Start erase on unprotected sectors */
264 for (sect = s_first; sect <= s_last; sect++) {
wdenkdb2f721f2003-03-06 00:58:30 +0000265 if (info->protect[sect] == 0) { /* not protected */
wdenk06d01db2003-03-14 20:47:52 +0000266 FPWV *addr = (FPWV *) (info->start[sect]);
wdenkdb2f721f2003-03-06 00:58:30 +0000267 FPW status;
wdenkea8015b2002-10-26 16:43:06 +0000268
wdenk06d01db2003-03-14 20:47:52 +0000269 printf ("Erasing sector %2d ... ", sect);
wdenkea8015b2002-10-26 16:43:06 +0000270
wdenk06d01db2003-03-14 20:47:52 +0000271 /* arm simple, non interrupt dependent timer */
272 reset_timer_masked ();
wdenkea8015b2002-10-26 16:43:06 +0000273
wdenk06d01db2003-03-14 20:47:52 +0000274 *addr = (FPW) 0x00500050; /* clear status register */
275 *addr = (FPW) 0x00200020; /* erase setup */
276 *addr = (FPW) 0x00D000D0; /* erase confirm */
wdenkea8015b2002-10-26 16:43:06 +0000277
wdenk06d01db2003-03-14 20:47:52 +0000278 while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
279 if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
wdenkdb2f721f2003-03-06 00:58:30 +0000280 printf ("Timeout\n");
wdenk06d01db2003-03-14 20:47:52 +0000281 *addr = (FPW) 0x00B000B0; /* suspend erase */
282 *addr = (FPW) 0x00FF00FF; /* reset to read mode */
wdenkdb2f721f2003-03-06 00:58:30 +0000283 rcode = 1;
284 break;
wdenk06d01db2003-03-14 20:47:52 +0000285 }
286 }
wdenkea8015b2002-10-26 16:43:06 +0000287
wdenk06d01db2003-03-14 20:47:52 +0000288 *addr = 0x00500050; /* clear status register cmd. */
289 *addr = 0x00FF00FF; /* resest to read mode */
wdenkea8015b2002-10-26 16:43:06 +0000290
wdenkdb2f721f2003-03-06 00:58:30 +0000291 printf (" done\n");
wdenk06d01db2003-03-14 20:47:52 +0000292 }
293 }
wdenkdb2f721f2003-03-06 00:58:30 +0000294 return rcode;
wdenkea8015b2002-10-26 16:43:06 +0000295}
296
297/*-----------------------------------------------------------------------
wdenkdb2f721f2003-03-06 00:58:30 +0000298 * Copy memory to flash, returns:
299 * 0 - OK
300 * 1 - write timeout
301 * 2 - Flash not erased
302 * 4 - Flash not identified
wdenkea8015b2002-10-26 16:43:06 +0000303 */
304
305int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
306{
wdenk06d01db2003-03-14 20:47:52 +0000307 ulong cp, wp;
wdenkdb2f721f2003-03-06 00:58:30 +0000308 FPW data;
309 int count, i, l, rc, port_width;
wdenkea8015b2002-10-26 16:43:06 +0000310
wdenkdb2f721f2003-03-06 00:58:30 +0000311 if (info->flash_id == FLASH_UNKNOWN) {
312 return 4;
313 }
314/* get lower word aligned address */
315#ifdef FLASH_PORT_WIDTH16
316 wp = (addr & ~1);
317 port_width = 2;
318#else
319 wp = (addr & ~3);
320 port_width = 4;
321#endif
wdenkea8015b2002-10-26 16:43:06 +0000322
wdenk06d01db2003-03-14 20:47:52 +0000323 /*
324 * handle unaligned start bytes
325 */
326 if ((l = addr - wp) != 0) {
327 data = 0;
328 for (i = 0, cp = wp; i < l; ++i, ++cp) {
329 data = (data << 8) | (*(uchar *) cp);
330 }
331 for (; i < port_width && cnt > 0; ++i) {
wdenkdb2f721f2003-03-06 00:58:30 +0000332 data = (data << 8) | *src++;
wdenk06d01db2003-03-14 20:47:52 +0000333 --cnt;
334 ++cp;
335 }
336 for (; cnt == 0 && i < port_width; ++i, ++cp) {
337 data = (data << 8) | (*(uchar *) cp);
338 }
wdenkea8015b2002-10-26 16:43:06 +0000339
wdenk06d01db2003-03-14 20:47:52 +0000340 if ((rc = write_data (info, wp, SWAP (data))) != 0) {
341 return (rc);
342 }
wdenkdb2f721f2003-03-06 00:58:30 +0000343 wp += port_width;
wdenk06d01db2003-03-14 20:47:52 +0000344 }
wdenkea8015b2002-10-26 16:43:06 +0000345
wdenk06d01db2003-03-14 20:47:52 +0000346 /*
347 * handle word aligned part
348 */
wdenkdb2f721f2003-03-06 00:58:30 +0000349 count = 0;
350 while (cnt >= port_width) {
351 data = 0;
wdenk06d01db2003-03-14 20:47:52 +0000352 for (i = 0; i < port_width; ++i) {
wdenkdb2f721f2003-03-06 00:58:30 +0000353 data = (data << 8) | *src++;
354 }
wdenk06d01db2003-03-14 20:47:52 +0000355 if ((rc = write_data (info, wp, SWAP (data))) != 0) {
356 return (rc);
357 }
358 wp += port_width;
wdenkdb2f721f2003-03-06 00:58:30 +0000359 cnt -= port_width;
wdenk06d01db2003-03-14 20:47:52 +0000360 if (count++ > 0x800) {
361 spin_wheel ();
wdenkdb2f721f2003-03-06 00:58:30 +0000362 count = 0;
363 }
wdenkdb2f721f2003-03-06 00:58:30 +0000364 }
365
wdenk06d01db2003-03-14 20:47:52 +0000366 if (cnt == 0) {
367 return (0);
368 }
369
370 /*
371 * handle unaligned tail bytes
372 */
373 data = 0;
374 for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
375 data = (data << 8) | *src++;
376 --cnt;
377 }
378 for (; i < port_width; ++i, ++cp) {
379 data = (data << 8) | (*(uchar *) cp);
380 }
381
382 return (write_data (info, wp, SWAP (data)));
wdenkdb2f721f2003-03-06 00:58:30 +0000383}
384
385/*-----------------------------------------------------------------------
386 * Write a word or halfword to Flash, returns:
387 * 0 - OK
388 * 1 - write timeout
389 * 2 - Flash not erased
390 */
391static int write_data (flash_info_t *info, ulong dest, FPW data)
392{
wdenk06d01db2003-03-14 20:47:52 +0000393 FPWV *addr = (FPWV *) dest;
wdenkdb2f721f2003-03-06 00:58:30 +0000394 ulong status;
wdenkdb2f721f2003-03-06 00:58:30 +0000395 int flag;
396
397 /* Check if Flash is (sufficiently) erased */
398 if ((*addr & data) != data) {
wdenk06d01db2003-03-14 20:47:52 +0000399 printf ("not erased at %08lx (%lx)\n", (ulong) addr, *addr);
wdenkdb2f721f2003-03-06 00:58:30 +0000400 return (2);
401 }
402 /* Disable interrupts which might cause a timeout here */
wdenk06d01db2003-03-14 20:47:52 +0000403 flag = disable_interrupts ();
wdenkdb2f721f2003-03-06 00:58:30 +0000404
wdenk06d01db2003-03-14 20:47:52 +0000405 *addr = (FPW) 0x00400040; /* write setup */
wdenkdb2f721f2003-03-06 00:58:30 +0000406 *addr = data;
407
408 /* arm simple, non interrupt dependent timer */
wdenk06d01db2003-03-14 20:47:52 +0000409 reset_timer_masked ();
wdenkdb2f721f2003-03-06 00:58:30 +0000410
411 /* wait while polling the status register */
wdenk06d01db2003-03-14 20:47:52 +0000412 while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
413 if (get_timer_masked () > CFG_FLASH_WRITE_TOUT) {
414 *addr = (FPW) 0x00FF00FF; /* restore read mode */
wdenkdb2f721f2003-03-06 00:58:30 +0000415 return (1);
416 }
wdenk06d01db2003-03-14 20:47:52 +0000417 }
wdenkea8015b2002-10-26 16:43:06 +0000418
wdenk06d01db2003-03-14 20:47:52 +0000419 *addr = (FPW) 0x00FF00FF; /* restore read mode */
wdenkdb2f721f2003-03-06 00:58:30 +0000420
421 return (0);
wdenkea8015b2002-10-26 16:43:06 +0000422}
wdenkdb2f721f2003-03-06 00:58:30 +0000423
wdenk06d01db2003-03-14 20:47:52 +0000424void inline spin_wheel (void)
wdenkdb2f721f2003-03-06 00:58:30 +0000425{
wdenk06d01db2003-03-14 20:47:52 +0000426 static int p = 0;
427 static char w[] = "\\/-";
wdenkdb2f721f2003-03-06 00:58:30 +0000428
wdenk06d01db2003-03-14 20:47:52 +0000429 printf ("\010%c", w[p]);
430 (++p == 3) ? (p = 0) : 0;
wdenkdb2f721f2003-03-06 00:58:30 +0000431}