blob: 45cccf712b1c699e47b78686b0f4b2347d4d61da [file] [log] [blame]
wdenk89930722002-09-18 07:25:03 +00001/*
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
wdenk43d96162003-03-06 00:02:04 +000027/* #define DEBUG */
28
wdenk89930722002-09-18 07:25:03 +000029#include <common.h>
30#include <mpc8xx.h>
31
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020032flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
wdenk89930722002-09-18 07:25:03 +000033
Jean-Christophe PLAGNIOL-VILLARD5a1aceb2008-09-10 22:48:04 +020034#if defined(CONFIG_ENV_IS_IN_FLASH)
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020035# ifndef CONFIG_ENV_ADDR
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020036# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
wdenk89930722002-09-18 07:25:03 +000037# endif
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020038# ifndef CONFIG_ENV_SIZE
39# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
wdenk89930722002-09-18 07:25:03 +000040# endif
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020041# ifndef CONFIG_ENV_SECT_SIZE
42# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
wdenk89930722002-09-18 07:25:03 +000043# endif
44#endif
45
46/*-----------------------------------------------------------------------
47 * Protection Flags:
48 */
49#define FLAG_PROTECT_SET 0x01
50#define FLAG_PROTECT_CLEAR 0x02
51
52/* Board support for 1 or 2 flash devices */
53#undef FLASH_PORT_WIDTH32
54#define FLASH_PORT_WIDTH16
55
56#ifdef FLASH_PORT_WIDTH16
wdenk43d96162003-03-06 00:02:04 +000057#define FLASH_PORT_WIDTH ushort
58#define FLASH_PORT_WIDTHV vu_short
wdenk89930722002-09-18 07:25:03 +000059#else
wdenk43d96162003-03-06 00:02:04 +000060#define FLASH_PORT_WIDTH ulong
61#define FLASH_PORT_WIDTHV vu_long
wdenk89930722002-09-18 07:25:03 +000062#endif
63
wdenk43d96162003-03-06 00:02:04 +000064#define FPW FLASH_PORT_WIDTH
65#define FPWV FLASH_PORT_WIDTHV
wdenk89930722002-09-18 07:25:03 +000066
67/*-----------------------------------------------------------------------
68 * Functions
69 */
wdenk43d96162003-03-06 00:02:04 +000070static ulong flash_get_size (FPW * addr, flash_info_t * info);
71static int write_data (flash_info_t * info, ulong dest, FPW data);
72static void flash_get_offsets (ulong base, flash_info_t * info);
wdenk89930722002-09-18 07:25:03 +000073
74/*-----------------------------------------------------------------------
75 */
76
77unsigned long flash_init (void)
78{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020079 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
wdenk89930722002-09-18 07:25:03 +000080 volatile memctl8xx_t *memctl = &immap->im_memctl;
81 unsigned long size_b0;
82 int i;
83
84 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020085 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
wdenk89930722002-09-18 07:25:03 +000086 flash_info[i].flash_id = FLASH_UNKNOWN;
87 }
88
89 /* Static FLASH Bank configuration here - FIXME XXX */
wdenk43d96162003-03-06 00:02:04 +000090 size_b0 = flash_get_size ((FPW *) FLASH_BASE0_PRELIM, &flash_info[0]);
wdenk89930722002-09-18 07:25:03 +000091
92 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
93 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
wdenk43d96162003-03-06 00:02:04 +000094 size_b0, size_b0 << 20);
wdenk89930722002-09-18 07:25:03 +000095 }
96
97 /* Remap FLASH according to real size */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020098 memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000);
99 memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V;
wdenk89930722002-09-18 07:25:03 +0000100
101 /* Re-do sizing to get full correct info */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200102 size_b0 = flash_get_size ((FPW *) CONFIG_SYS_FLASH_BASE, &flash_info[0]);
wdenk89930722002-09-18 07:25:03 +0000103
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200104 flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
wdenk89930722002-09-18 07:25:03 +0000105
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200106#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
wdenk89930722002-09-18 07:25:03 +0000107 /* monitor protection ON by default */
wdenk43d96162003-03-06 00:02:04 +0000108 (void) flash_protect (FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200109 CONFIG_SYS_FLASH_BASE,
110 CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
wdenk43d96162003-03-06 00:02:04 +0000111 &flash_info[0]);
wdenk89930722002-09-18 07:25:03 +0000112#endif
113
Jean-Christophe PLAGNIOL-VILLARD5a1aceb2008-09-10 22:48:04 +0200114#ifdef CONFIG_ENV_IS_IN_FLASH
wdenk89930722002-09-18 07:25:03 +0000115 /* ENV protection ON by default */
wdenk43d96162003-03-06 00:02:04 +0000116 flash_protect (FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200117 CONFIG_ENV_ADDR,
118 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
wdenk43d96162003-03-06 00:02:04 +0000119 &flash_info[0]);
wdenk89930722002-09-18 07:25:03 +0000120#endif
121
122 flash_info[0].size = size_b0;
123
124 return (size_b0);
125}
126
127/*-----------------------------------------------------------------------
128 */
wdenk43d96162003-03-06 00:02:04 +0000129static void flash_get_offsets (ulong base, flash_info_t * info)
wdenk89930722002-09-18 07:25:03 +0000130{
131 int i;
132
133 if (info->flash_id == FLASH_UNKNOWN) {
134 return;
135 }
136
137 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
138 for (i = 0; i < info->sector_count; i++) {
139 info->start[i] = base + (i * 0x00020000);
140 }
141 }
142}
143
144/*-----------------------------------------------------------------------
145 */
wdenk43d96162003-03-06 00:02:04 +0000146void flash_print_info (flash_info_t * info)
wdenk89930722002-09-18 07:25:03 +0000147{
148 int i;
149
150 if (info->flash_id == FLASH_UNKNOWN) {
151 printf ("missing or unknown FLASH type\n");
152 return;
153 }
154
155 switch (info->flash_id & FLASH_VENDMASK) {
wdenk43d96162003-03-06 00:02:04 +0000156 case FLASH_MAN_INTEL:
157 printf ("INTEL ");
158 break;
159 default:
160 printf ("Unknown Vendor ");
161 break;
wdenk89930722002-09-18 07:25:03 +0000162 }
163
164 switch (info->flash_id & FLASH_TYPEMASK) {
wdenk43d96162003-03-06 00:02:04 +0000165 case FLASH_28F320J3A:
166 printf ("28F320J3A\n");
167 break;
168 case FLASH_28F640J3A:
169 printf ("28F640J3A\n");
170 break;
171 case FLASH_28F128J3A:
172 printf ("28F128J3A\n");
173 break;
174 default:
175 printf ("Unknown Chip Type\n");
176 break;
wdenk89930722002-09-18 07:25:03 +0000177 }
178
179 printf (" Size: %ld MB in %d Sectors\n",
wdenk43d96162003-03-06 00:02:04 +0000180 info->size >> 20, info->sector_count);
wdenk89930722002-09-18 07:25:03 +0000181
182 printf (" Sector Start Addresses:");
wdenk43d96162003-03-06 00:02:04 +0000183 for (i = 0; i < info->sector_count; ++i) {
wdenk89930722002-09-18 07:25:03 +0000184 if ((i % 5) == 0)
185 printf ("\n ");
186 printf (" %08lX%s",
187 info->start[i],
wdenk43d96162003-03-06 00:02:04 +0000188 info->protect[i] ? " (RO)" : " ");
wdenk89930722002-09-18 07:25:03 +0000189 }
190 printf ("\n");
191 return;
192}
193
194/*-----------------------------------------------------------------------
195 */
196
197
198/*-----------------------------------------------------------------------
199 */
200
201/*
202 * The following code cannot be run from FLASH!
203 */
204
wdenk43d96162003-03-06 00:02:04 +0000205static ulong flash_get_size (FPW * addr, flash_info_t * info)
wdenk89930722002-09-18 07:25:03 +0000206{
207 FPW value;
208
wdenkd791b1d2003-04-20 14:04:18 +0000209 /* Make sure Block Lock Bits get cleared */
210 addr[0] = (FPW) 0x00FF00FF;
211 addr[0] = (FPW) 0x00600060;
212 addr[0] = (FPW) 0x00D000D0;
213 addr[0] = (FPW) 0x00FF00FF;
214
wdenk89930722002-09-18 07:25:03 +0000215 /* Write auto select command: read Manufacturer ID */
wdenk43d96162003-03-06 00:02:04 +0000216 addr[0x5555] = (FPW) 0x00AA00AA;
217 addr[0x2AAA] = (FPW) 0x00550055;
218 addr[0x5555] = (FPW) 0x00900090;
wdenk89930722002-09-18 07:25:03 +0000219
220 value = addr[0];
221
wdenk43d96162003-03-06 00:02:04 +0000222 debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
223
224 switch (value) {
225 case (FPW) INTEL_MANUFACT:
226 info->flash_id = FLASH_MAN_INTEL;
227 break;
wdenk89930722002-09-18 07:25:03 +0000228 default:
229 info->flash_id = FLASH_UNKNOWN;
230 info->sector_count = 0;
231 info->size = 0;
wdenk43d96162003-03-06 00:02:04 +0000232 addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
233 return (0); /* no or unknown flash */
wdenk89930722002-09-18 07:25:03 +0000234 }
235
wdenk43d96162003-03-06 00:02:04 +0000236 value = addr[1]; /* device ID */
wdenk89930722002-09-18 07:25:03 +0000237
wdenk43d96162003-03-06 00:02:04 +0000238 debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
wdenk89930722002-09-18 07:25:03 +0000239
wdenk43d96162003-03-06 00:02:04 +0000240 switch (value) {
241 case (FPW) INTEL_ID_28F320J3A:
242 info->flash_id += FLASH_28F320J3A;
243 info->sector_count = 32;
244 info->size = 0x00400000;
245 break; /* => 4 MB */
wdenk89930722002-09-18 07:25:03 +0000246
wdenk43d96162003-03-06 00:02:04 +0000247 case (FPW) INTEL_ID_28F640J3A:
248 info->flash_id += FLASH_28F640J3A;
249 info->sector_count = 64;
250 info->size = 0x00800000;
251 break; /* => 8 MB */
252
253 case (FPW) INTEL_ID_28F128J3A:
254 info->flash_id += FLASH_28F128J3A;
255 info->sector_count = 128;
256 info->size = 0x01000000;
257 break; /* => 16 MB */
wdenk89930722002-09-18 07:25:03 +0000258
259 default:
260 info->flash_id = FLASH_UNKNOWN;
261 break;
262 }
263
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200264 if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
wdenk89930722002-09-18 07:25:03 +0000265 printf ("** ERROR: sector count %d > max (%d) **\n",
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200266 info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
267 info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
wdenk89930722002-09-18 07:25:03 +0000268 }
269
wdenk43d96162003-03-06 00:02:04 +0000270 addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
wdenk89930722002-09-18 07:25:03 +0000271
272 return (info->size);
273}
274
275
276/*-----------------------------------------------------------------------
277 */
278
wdenk43d96162003-03-06 00:02:04 +0000279int flash_erase (flash_info_t * info, int s_first, int s_last)
wdenk89930722002-09-18 07:25:03 +0000280{
281 int flag, prot, sect;
282 ulong type, start, now, last;
283 int rcode = 0;
284
285 if ((s_first < 0) || (s_first > s_last)) {
286 if (info->flash_id == FLASH_UNKNOWN) {
287 printf ("- missing\n");
288 } else {
289 printf ("- no sectors to erase\n");
290 }
291 return 1;
292 }
293
294 type = (info->flash_id & FLASH_VENDMASK);
295 if ((type != FLASH_MAN_INTEL)) {
296 printf ("Can't erase unknown flash type %08lx - aborted\n",
297 info->flash_id);
298 return 1;
299 }
300
301 prot = 0;
wdenk43d96162003-03-06 00:02:04 +0000302 for (sect = s_first; sect <= s_last; ++sect) {
wdenk89930722002-09-18 07:25:03 +0000303 if (info->protect[sect]) {
304 prot++;
305 }
306 }
307
308 if (prot) {
309 printf ("- Warning: %d protected sectors will not be erased!\n",
310 prot);
311 } else {
312 printf ("\n");
313 }
314
315 start = get_timer (0);
wdenk43d96162003-03-06 00:02:04 +0000316 last = start;
wdenk89930722002-09-18 07:25:03 +0000317 /* Start erase on unprotected sectors */
wdenk43d96162003-03-06 00:02:04 +0000318 for (sect = s_first; sect <= s_last; sect++) {
wdenk89930722002-09-18 07:25:03 +0000319 if (info->protect[sect] == 0) { /* not protected */
wdenk43d96162003-03-06 00:02:04 +0000320 FPWV *addr = (FPWV *) (info->start[sect]);
wdenk89930722002-09-18 07:25:03 +0000321 FPW status;
322
323 /* Disable interrupts which might cause a timeout here */
wdenk43d96162003-03-06 00:02:04 +0000324 flag = disable_interrupts ();
wdenk89930722002-09-18 07:25:03 +0000325
wdenk43d96162003-03-06 00:02:04 +0000326 *addr = (FPW) 0x00500050; /* clear status register */
327 *addr = (FPW) 0x00200020; /* erase setup */
328 *addr = (FPW) 0x00D000D0; /* erase confirm */
wdenk89930722002-09-18 07:25:03 +0000329
330 /* re-enable interrupts if necessary */
331 if (flag)
wdenk43d96162003-03-06 00:02:04 +0000332 enable_interrupts ();
wdenk89930722002-09-18 07:25:03 +0000333
334 /* wait at least 80us - let's wait 1 ms */
335 udelay (1000);
336
wdenk43d96162003-03-06 00:02:04 +0000337 while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200338 if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
wdenk43d96162003-03-06 00:02:04 +0000339 printf ("Timeout\n");
340 *addr = (FPW) 0x00B000B0; /* suspend erase */
341 *addr = (FPW) 0x00FF00FF; /* reset to read mode */
342 rcode = 1;
343 break;
344 }
wdenk89930722002-09-18 07:25:03 +0000345
wdenk43d96162003-03-06 00:02:04 +0000346 /* show that we're waiting */
347 if ((now - last) > 1000) { /* every second */
348 putc ('.');
349 last = now;
350 }
wdenk89930722002-09-18 07:25:03 +0000351 }
352
wdenk43d96162003-03-06 00:02:04 +0000353 *addr = (FPW) 0x00FF00FF; /* reset to read mode */
wdenk89930722002-09-18 07:25:03 +0000354 }
355 }
356 printf (" done\n");
357 return rcode;
358}
359
360/*-----------------------------------------------------------------------
361 * Copy memory to flash, returns:
362 * 0 - OK
363 * 1 - write timeout
364 * 2 - Flash not erased
365 * 4 - Flash not identified
366 */
367
wdenk43d96162003-03-06 00:02:04 +0000368int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
wdenk89930722002-09-18 07:25:03 +0000369{
370 ulong cp, wp;
371 FPW data;
wdenk43d96162003-03-06 00:02:04 +0000372
wdenk89930722002-09-18 07:25:03 +0000373 int i, l, rc, port_width;
wdenk89930722002-09-18 07:25:03 +0000374
375 if (info->flash_id == FLASH_UNKNOWN) {
376 return 4;
377 }
378/* get lower word aligned address */
379#ifdef FLASH_PORT_WIDTH16
380 wp = (addr & ~1);
381 port_width = 2;
382#else
383 wp = (addr & ~3);
384 port_width = 4;
385#endif
386
387 /*
388 * handle unaligned start bytes
389 */
390 if ((l = addr - wp) != 0) {
391 data = 0;
wdenk43d96162003-03-06 00:02:04 +0000392 for (i = 0, cp = wp; i < l; ++i, ++cp) {
393 data = (data << 8) | (*(uchar *) cp);
wdenk89930722002-09-18 07:25:03 +0000394 }
wdenk43d96162003-03-06 00:02:04 +0000395 for (; i < port_width && cnt > 0; ++i) {
wdenk89930722002-09-18 07:25:03 +0000396 data = (data << 8) | *src++;
397 --cnt;
398 ++cp;
399 }
wdenk43d96162003-03-06 00:02:04 +0000400 for (; cnt == 0 && i < port_width; ++i, ++cp) {
401 data = (data << 8) | (*(uchar *) cp);
wdenk89930722002-09-18 07:25:03 +0000402 }
403
wdenk43d96162003-03-06 00:02:04 +0000404 if ((rc = write_data (info, wp, data)) != 0) {
wdenk89930722002-09-18 07:25:03 +0000405 return (rc);
406 }
407 wp += port_width;
408 }
409
410 /*
411 * handle word aligned part
412 */
wdenk89930722002-09-18 07:25:03 +0000413 while (cnt >= port_width) {
414 data = 0;
wdenk43d96162003-03-06 00:02:04 +0000415 for (i = 0; i < port_width; ++i) {
wdenk89930722002-09-18 07:25:03 +0000416 data = (data << 8) | *src++;
417 }
wdenk43d96162003-03-06 00:02:04 +0000418 if ((rc = write_data (info, wp, data)) != 0) {
wdenk89930722002-09-18 07:25:03 +0000419 return (rc);
420 }
wdenk43d96162003-03-06 00:02:04 +0000421 wp += port_width;
wdenk89930722002-09-18 07:25:03 +0000422 cnt -= port_width;
wdenk89930722002-09-18 07:25:03 +0000423 }
424
425 if (cnt == 0) {
426 return (0);
427 }
428
429 /*
430 * handle unaligned tail bytes
431 */
432 data = 0;
wdenk43d96162003-03-06 00:02:04 +0000433 for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
wdenk89930722002-09-18 07:25:03 +0000434 data = (data << 8) | *src++;
435 --cnt;
436 }
wdenk43d96162003-03-06 00:02:04 +0000437 for (; i < port_width; ++i, ++cp) {
438 data = (data << 8) | (*(uchar *) cp);
wdenk89930722002-09-18 07:25:03 +0000439 }
440
wdenk43d96162003-03-06 00:02:04 +0000441 return (write_data (info, wp, data));
wdenk89930722002-09-18 07:25:03 +0000442}
443
444/*-----------------------------------------------------------------------
445 * Write a word or halfword to Flash, returns:
446 * 0 - OK
447 * 1 - write timeout
448 * 2 - Flash not erased
449 */
wdenk43d96162003-03-06 00:02:04 +0000450static int write_data (flash_info_t * info, ulong dest, FPW data)
wdenk89930722002-09-18 07:25:03 +0000451{
wdenk43d96162003-03-06 00:02:04 +0000452 FPWV *addr = (FPWV *) dest;
wdenk89930722002-09-18 07:25:03 +0000453 ulong status;
454 ulong start;
455 int flag;
456
457 /* Check if Flash is (sufficiently) erased */
458 if ((*addr & data) != data) {
wdenk43d96162003-03-06 00:02:04 +0000459 printf ("not erased at %08lx (%x)\n", (ulong) addr, *addr);
wdenk89930722002-09-18 07:25:03 +0000460 return (2);
461 }
462 /* Disable interrupts which might cause a timeout here */
wdenk43d96162003-03-06 00:02:04 +0000463 flag = disable_interrupts ();
wdenk89930722002-09-18 07:25:03 +0000464
wdenk43d96162003-03-06 00:02:04 +0000465 *addr = (FPW) 0x00400040; /* write setup */
wdenk89930722002-09-18 07:25:03 +0000466 *addr = data;
467
468 /* re-enable interrupts if necessary */
469 if (flag)
wdenk43d96162003-03-06 00:02:04 +0000470 enable_interrupts ();
wdenk89930722002-09-18 07:25:03 +0000471
472 start = get_timer (0);
473
wdenk43d96162003-03-06 00:02:04 +0000474 while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200475 if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
wdenk43d96162003-03-06 00:02:04 +0000476 *addr = (FPW) 0x00FF00FF; /* restore read mode */
wdenk89930722002-09-18 07:25:03 +0000477 return (1);
478 }
479 }
480
wdenk43d96162003-03-06 00:02:04 +0000481 *addr = (FPW) 0x00FF00FF; /* restore read mode */
wdenk89930722002-09-18 07:25:03 +0000482
483 return (0);
484}