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wdenkcc1c8a12002-11-02 22:58:18 +00001/*
2 * (C) Copyright 2001, 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * Flash Routines for Intel devices
6 *
7 *--------------------------------------------------------------------
Wolfgang Denk3765b3e2013-10-07 13:07:26 +02008 * SPDX-License-Identifier: GPL-2.0+
wdenkcc1c8a12002-11-02 22:58:18 +00009 */
10
11#include <common.h>
12#include <mpc8xx.h>
13
14
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020015flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
wdenkcc1c8a12002-11-02 22:58:18 +000016
17/*-----------------------------------------------------------------------
18 */
19ulong flash_get_size (volatile unsigned long *baseaddr,
20 flash_info_t * info)
21{
22 short i;
23 unsigned long flashtest_h, flashtest_l;
24
25 info->sector_count = info->size = 0;
26 info->flash_id = FLASH_UNKNOWN;
27
28 /* Write query command sequence and test FLASH answer
29 */
30 baseaddr[0] = 0x00980098;
31 baseaddr[1] = 0x00980098;
32
33 flashtest_h = baseaddr[0]; /* manufacturer ID */
34 flashtest_l = baseaddr[1];
35
36 if (flashtest_h != INTEL_MANUFACT || flashtest_l != INTEL_MANUFACT)
37 return (0); /* no or unknown flash */
38
39 flashtest_h = baseaddr[2]; /* device ID */
40 flashtest_l = baseaddr[3];
41
42 if (flashtest_h != flashtest_l)
43 return (0);
44
45 switch (flashtest_h) {
46 case INTEL_ID_28F160C3B:
47 info->flash_id = FLASH_28F160C3B;
48 info->sector_count = 39;
49 info->size = 0x00800000; /* 4 * 2 MB = 8 MB */
50 break;
51 case INTEL_ID_28F160F3B:
52 info->flash_id = FLASH_28F160F3B;
53 info->sector_count = 39;
54 info->size = 0x00800000; /* 4 * 2 MB = 8 MB */
55 break;
wdenkefa329c2004-03-23 20:18:25 +000056 case INTEL_ID_28F640C3B:
57 info->flash_id = FLASH_28F640C3B;
58 info->sector_count = 135;
59 info->size = 0x02000000; /* 16 * 2 MB = 32 MB */
60 break;
wdenkcc1c8a12002-11-02 22:58:18 +000061 default:
62 return (0); /* no or unknown flash */
63 }
64
65 info->flash_id |= INTEL_MANUFACT << 16; /* set manufacturer offset */
66
67 if (info->flash_id & FLASH_BTYPE) {
68 volatile unsigned long *tmp = baseaddr;
69
70 /* set up sector start adress table (bottom sector type)
wdenkefa329c2004-03-23 20:18:25 +000071 * AND unlock the sectors (if our chip is 160C3 or 640C3)
wdenkcc1c8a12002-11-02 22:58:18 +000072 */
73 for (i = 0; i < info->sector_count; i++) {
wdenkefa329c2004-03-23 20:18:25 +000074 if (((info->flash_id & FLASH_TYPEMASK) == FLASH_28F160C3B) ||
75 ((info->flash_id & FLASH_TYPEMASK) == FLASH_28F640C3B)) {
wdenkcc1c8a12002-11-02 22:58:18 +000076 tmp[0] = 0x00600060;
77 tmp[1] = 0x00600060;
78 tmp[0] = 0x00D000D0;
79 tmp[1] = 0x00D000D0;
80 }
81 info->start[i] = (uint) tmp;
82 tmp += i < 8 ? 0x2000 : 0x10000; /* pointer arith */
83 }
84 }
85
86 memset (info->protect, 0, info->sector_count);
87
88 baseaddr[0] = 0x00FF00FF;
89 baseaddr[1] = 0x00FF00FF;
90
91 return (info->size);
92}
93
94/*-----------------------------------------------------------------------
95 */
96unsigned long flash_init (void)
97{
98 unsigned long size_b0 = 0;
99 int i;
100
101 /* Init: no FLASHes known
102 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200103 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
wdenkcc1c8a12002-11-02 22:58:18 +0000104 flash_info[i].flash_id = FLASH_UNKNOWN;
105 }
106
107 /* Static FLASH Bank configuration here (only one bank) */
108
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200109 size_b0 = flash_get_size ((ulong *) CONFIG_SYS_FLASH0_BASE, &flash_info[0]);
wdenkcc1c8a12002-11-02 22:58:18 +0000110 if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) {
111 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
112 size_b0, size_b0 >> 20);
113 }
114
115 /* protect monitor and environment sectors
116 */
117
118#ifndef CONFIG_BOOT_ROM
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200119 /* If U-Boot is booted from ROM the CONFIG_SYS_MONITOR_BASE > CONFIG_SYS_FLASH0_BASE
wdenkcc1c8a12002-11-02 22:58:18 +0000120 * but we shouldn't protect it.
121 */
122
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200123# if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE
wdenkcc1c8a12002-11-02 22:58:18 +0000124 flash_protect (FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200125 CONFIG_SYS_MONITOR_BASE,
126 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]
wdenkcc1c8a12002-11-02 22:58:18 +0000127 );
128# endif
129#endif /* CONFIG_BOOT_ROM */
130
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200131#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
132# ifndef CONFIG_ENV_SIZE
133# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
wdenkcc1c8a12002-11-02 22:58:18 +0000134# endif
135 flash_protect (FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200136 CONFIG_ENV_ADDR,
137 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
wdenkcc1c8a12002-11-02 22:58:18 +0000138#endif
139
140 return (size_b0);
141}
142
143/*-----------------------------------------------------------------------
144 */
145void flash_print_info (flash_info_t * info)
146{
147 int i;
148
149 if (info->flash_id == FLASH_UNKNOWN) {
150 printf ("missing or unknown FLASH type\n");
151 return;
152 }
153
154 switch ((info->flash_id >> 16) & 0xff) {
155 case 0x89:
156 printf ("INTEL ");
157 break;
158 default:
159 printf ("Unknown Vendor ");
160 break;
161 }
162
163 switch (info->flash_id & FLASH_TYPEMASK) {
164 case FLASH_28F160C3B:
165 printf ("28F160C3B (16 M, bottom sector)\n");
166 break;
167 case FLASH_28F160F3B:
168 printf ("28F160F3B (16 M, bottom sector)\n");
169 break;
wdenkefa329c2004-03-23 20:18:25 +0000170 case FLASH_28F640C3B:
171 printf ("28F640C3B (64 M, bottom sector)\n");
172 break;
wdenkcc1c8a12002-11-02 22:58:18 +0000173 default:
174 printf ("Unknown Chip Type\n");
175 break;
176 }
177
178 printf (" Size: %ld MB in %d Sectors\n",
179 info->size >> 20, info->sector_count);
180
181 printf (" Sector Start Addresses:");
182 for (i = 0; i < info->sector_count; ++i) {
183 if ((i % 5) == 0)
184 printf ("\n ");
185 printf (" %08lX%s",
186 info->start[i],
187 info->protect[i] ? " (RO)" : " "
188 );
189 }
190 printf ("\n");
191}
192
193/*-----------------------------------------------------------------------
194 */
195int flash_erase (flash_info_t * info, int s_first, int s_last)
196{
197 int flag, prot, sect;
198 ulong start, now, last;
199
200 if ((s_first < 0) || (s_first > s_last)) {
201 if (info->flash_id == FLASH_UNKNOWN) {
202 printf ("- missing\n");
203 } else {
204 printf ("- no sectors to erase\n");
205 }
206 return 1;
207 }
208
209 prot = 0;
210 for (sect = s_first; sect <= s_last; sect++) {
211 if (info->protect[sect])
212 prot++;
213 }
214
215 if (prot) {
216 printf ("- Warning: %d protected sectors will not be erased!\n",
217 prot);
218 } else {
219 printf ("\n");
220 }
221
222 /* Start erase on unprotected sectors
223 */
224 for (sect = s_first; sect <= s_last; sect++) {
225 volatile ulong *addr =
226 (volatile unsigned long *) info->start[sect];
227
228 start = get_timer (0);
229 last = start;
230 if (info->protect[sect] == 0) {
231 /* Disable interrupts which might cause a timeout here
232 */
233 flag = disable_interrupts ();
234
235 /* Erase the block
236 */
237 addr[0] = 0x00200020;
238 addr[1] = 0x00200020;
239 addr[0] = 0x00D000D0;
240 addr[1] = 0x00D000D0;
241
242 /* re-enable interrupts if necessary
243 */
244 if (flag)
245 enable_interrupts ();
246
247 /* wait at least 80us - let's wait 1 ms
248 */
249 udelay (1000);
250
251 last = start;
252 while ((addr[0] & 0x00800080) != 0x00800080 ||
253 (addr[1] & 0x00800080) != 0x00800080) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200254 if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
wdenkcc1c8a12002-11-02 22:58:18 +0000255 printf ("Timeout (erase suspended!)\n");
256 /* Suspend erase
257 */
258 addr[0] = 0x00B000B0;
259 addr[1] = 0x00B000B0;
260 goto DONE;
261 }
262 /* show that we're waiting
263 */
264 if ((now - last) > 1000) { /* every second */
265 serial_putc ('.');
266 last = now;
267 }
268 }
269 if (addr[0] & 0x00220022 || addr[1] & 0x00220022) {
270 printf ("*** ERROR: erase failed!\n");
271 goto DONE;
272 }
273 }
274 /* Clear status register and reset to read mode
275 */
276 addr[0] = 0x00500050;
277 addr[1] = 0x00500050;
278 addr[0] = 0x00FF00FF;
279 addr[1] = 0x00FF00FF;
280 }
281
282 printf (" done\n");
283
284DONE:
285 return 0;
286}
287
288static int write_word (flash_info_t *, volatile unsigned long *, ulong);
289
290/*-----------------------------------------------------------------------
291 * Copy memory to flash, returns:
292 * 0 - OK
293 * 1 - write timeout
294 * 2 - Flash not erased
295 */
296int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
297{
298 ulong v;
299 int i, l, cc = cnt, res = 0;
300
301
302 for (v=0; cc > 0; addr += 4, cc -= 4 - l) {
303 l = (addr & 3);
304 addr &= ~3;
305
306 for (i = 0; i < 4; i++) {
307 v = (v << 8) + (i < l || i - l >= cc ?
308 *((unsigned char *) addr + i) : *src++);
309 }
310
311 if ((res = write_word (info, (volatile unsigned long *) addr, v)) != 0)
312 break;
313 }
314
315 return (res);
316}
317
318/*-----------------------------------------------------------------------
319 * Write a word to Flash, returns:
320 * 0 - OK
321 * 1 - write timeout
322 * 2 - Flash not erased
323 */
324static int write_word (flash_info_t * info, volatile unsigned long *addr,
325 ulong data)
326{
327 int flag, res = 0;
328 ulong start;
329
330 /* Check if Flash is (sufficiently) erased
331 */
332 if ((*addr & data) != data)
333 return (2);
334
335 /* Disable interrupts which might cause a timeout here
336 */
337 flag = disable_interrupts ();
338
339 *addr = 0x00400040;
340 *addr = data;
341
342 /* re-enable interrupts if necessary
343 */
344 if (flag)
345 enable_interrupts ();
346
347 start = get_timer (0);
348 while ((*addr & 0x00800080) != 0x00800080) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200349 if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
wdenkcc1c8a12002-11-02 22:58:18 +0000350 /* Suspend program
351 */
352 *addr = 0x00B000B0;
353 res = 1;
354 goto OUT;
355 }
356 }
357
358 if (*addr & 0x00220022) {
359 printf ("*** ERROR: program failed!\n");
360 res = 1;
361 }
362
363OUT:
364 /* Clear status register and reset to read mode
365 */
366 *addr = 0x00500050;
367 *addr = 0x00FF00FF;
368
369 return (res);
370}