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Stefan Roesea4c8d132006-06-02 16:18:04 +02001/*
2 * (C) Copyright 2006
3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
Stefan Roesea4c8d132006-06-02 16:18:04 +02006 */
7
8#include <common.h>
9#include <asm/processor.h>
10
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020011#ifndef CONFIG_SYS_FLASH_READ0
12#define CONFIG_SYS_FLASH_READ0 0x0000 /* 0 is standard */
13#define CONFIG_SYS_FLASH_READ1 0x0001 /* 1 is standard */
14#define CONFIG_SYS_FLASH_READ2 0x0002 /* 2 is standard */
Stefan Roesea4c8d132006-06-02 16:18:04 +020015#endif
16
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020017flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
Stefan Roesea4c8d132006-06-02 16:18:04 +020018
19/*
20 * Functions
21 */
22static int write_word(flash_info_t *info, ulong dest, ulong data);
23static ulong flash_get_size(vu_long *addr, flash_info_t *info);
24
25unsigned long flash_init(void)
26{
27 unsigned long size_b0, size_b1;
28 int i;
29 unsigned long base_b0, base_b1;
30
31 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020032 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
Stefan Roesea4c8d132006-06-02 16:18:04 +020033 flash_info[i].flash_id = FLASH_UNKNOWN;
34 }
35
36 /* Static FLASH Bank configuration here - FIXME XXX */
37
38 base_b0 = FLASH_BASE0_PRELIM;
39 size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]);
40
41 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
42 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
43 size_b0, size_b0 << 20);
44 }
45
46 base_b1 = FLASH_BASE1_PRELIM;
47 size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]);
48
49 return (size_b0 + size_b1);
50}
51
52void flash_print_info(flash_info_t *info)
53{
54 int i;
55 int k;
56 int size;
57 int erased;
58 volatile unsigned long *flash;
59
60 if (info->flash_id == FLASH_UNKNOWN) {
61 printf ("missing or unknown FLASH type\n");
62 return;
63 }
64
65 switch (info->flash_id & FLASH_VENDMASK) {
66 case FLASH_MAN_AMD: printf ("AMD "); break;
67 case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
68 case FLASH_MAN_SST: printf ("SST "); break;
Heiko Schocher96e1d752007-07-11 18:39:11 +020069 case FLASH_MAN_STM: printf ("ST Micro"); break;
Stefan Roesea4c8d132006-06-02 16:18:04 +020070 case FLASH_MAN_EXCEL: printf ("Excel Semiconductor "); break;
Heiko Schocher566a4942007-06-22 19:11:54 +020071 case FLASH_MAN_MX: printf ("MXIC "); break;
Stefan Roesea4c8d132006-06-02 16:18:04 +020072 default: printf ("Unknown Vendor "); break;
73 }
74
75 switch (info->flash_id & FLASH_TYPEMASK) {
76 case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
77 break;
78 case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
79 break;
80 case FLASH_AM040: printf ("AM29LV040B (4 Mbit, uniform sector size)\n");
81 break;
82 case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
83 break;
84 case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
85 break;
86 case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
87 break;
88 case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
89 break;
90 case FLASH_AM320T: printf ("AM29LV320T (32 M, top sector)\n");
91 break;
92 case FLASH_AM320B: printf ("AM29LV320B (32 M, bottom sector)\n");
93 break;
94 case FLASH_AMDL322T: printf ("AM29DL322T (32 M, top sector)\n");
95 break;
96 case FLASH_AMDL322B: printf ("AM29DL322B (32 M, bottom sector)\n");
97 break;
98 case FLASH_AMDL323T: printf ("AM29DL323T (32 M, top sector)\n");
99 break;
100 case FLASH_AMDL323B: printf ("AM29DL323B (32 M, bottom sector)\n");
101 break;
102 case FLASH_SST020: printf ("SST39LF/VF020 (2 Mbit, uniform sector size)\n");
103 break;
104 case FLASH_SST040: printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\n");
105 break;
Heiko Schocher96e1d752007-07-11 18:39:11 +0200106 case STM_ID_M29W040B: printf ("ST Micro M29W040B (4 Mbit, uniform sector size)\n");
107 break;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200108 default: printf ("Unknown Chip Type\n");
109 break;
110 }
111
112 printf (" Size: %ld MB in %d Sectors\n",
113 info->size >> 20, info->sector_count);
114
115 printf (" Sector Start Addresses:");
116 for (i=0; i<info->sector_count; ++i) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200117#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
Stefan Roesea4c8d132006-06-02 16:18:04 +0200118 /*
119 * Check if whole sector is erased
120 */
121 if (i != (info->sector_count-1))
122 size = info->start[i+1] - info->start[i];
123 else
124 size = info->start[0] + info->size - info->start[i];
125 erased = 1;
126 flash = (volatile unsigned long *)info->start[i];
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200127 size = size >> 2; /* divide by 4 for longword access */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200128 for (k=0; k<size; k++) {
129 if (*flash++ != 0xffffffff) {
130 erased = 0;
131 break;
132 }
133 }
134
135 if ((i % 5) == 0)
136 printf ("\n ");
137 /* print empty and read-only info */
138 printf (" %08lX%s%s",
139 info->start[i],
140 erased ? " E" : " ",
141 info->protect[i] ? "RO " : " ");
142#else
143 if ((i % 5) == 0)
144 printf ("\n ");
145 printf (" %08lX%s",
146 info->start[i],
147 info->protect[i] ? " (RO)" : " ");
148#endif
149
150 }
151 printf ("\n");
152 return;
153}
154
155/*
156 * The following code cannot be run from FLASH!
157 */
158static ulong flash_get_size(vu_long *addr, flash_info_t *info)
159{
160 short i;
161 short n;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200162 volatile CONFIG_SYS_FLASH_WORD_SIZE value;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200163 ulong base = (ulong)addr;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200164 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)addr;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200165
166 /* Write auto select command: read Manufacturer ID */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200167 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
168 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
169 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00900090;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200170
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200171 value = addr2[CONFIG_SYS_FLASH_READ0];
Stefan Roesea4c8d132006-06-02 16:18:04 +0200172
173 switch (value) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200174 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_MANUFACT:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200175 info->flash_id = FLASH_MAN_AMD;
176 break;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200177 case (CONFIG_SYS_FLASH_WORD_SIZE)FUJ_MANUFACT:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200178 info->flash_id = FLASH_MAN_FUJ;
179 break;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200180 case (CONFIG_SYS_FLASH_WORD_SIZE)SST_MANUFACT:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200181 info->flash_id = FLASH_MAN_SST;
182 break;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200183 case (CONFIG_SYS_FLASH_WORD_SIZE)STM_MANUFACT:
Heiko Schocher96e1d752007-07-11 18:39:11 +0200184 info->flash_id = FLASH_MAN_STM;
185 break;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200186 case (CONFIG_SYS_FLASH_WORD_SIZE)EXCEL_MANUFACT:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200187 info->flash_id = FLASH_MAN_EXCEL;
188 break;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200189 case (CONFIG_SYS_FLASH_WORD_SIZE)MX_MANUFACT:
Heiko Schocher566a4942007-06-22 19:11:54 +0200190 info->flash_id = FLASH_MAN_MX;
191 break;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200192 default:
193 info->flash_id = FLASH_UNKNOWN;
194 info->sector_count = 0;
195 info->size = 0;
196 return (0); /* no or unknown flash */
197 }
198
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200199 value = addr2[CONFIG_SYS_FLASH_READ1]; /* device ID */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200200
201 switch (value) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200202 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400T:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200203 info->flash_id += FLASH_AM400T;
204 info->sector_count = 11;
205 info->size = 0x00080000;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200206 break; /* => 0.5 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200207
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200208 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400B:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200209 info->flash_id += FLASH_AM400B;
210 info->sector_count = 11;
211 info->size = 0x00080000;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200212 break; /* => 0.5 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200213
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200214 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV040B:
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200215 info->flash_id += FLASH_AM040;
216 info->sector_count = 8;
217 info->size = 0x0080000; /* => 0.5 MB */
218 break;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200219 case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_M29W040B:
Heiko Schocher96e1d752007-07-11 18:39:11 +0200220 info->flash_id += FLASH_AM040;
221 info->sector_count = 8;
222 info->size = 0x0080000; /* => 0,5 MB */
223 break;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200224
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200225 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800T:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200226 info->flash_id += FLASH_AM800T;
227 info->sector_count = 19;
228 info->size = 0x00100000;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200229 break; /* => 1 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200230
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200231 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800B:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200232 info->flash_id += FLASH_AM800B;
233 info->sector_count = 19;
234 info->size = 0x00100000;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200235 break; /* => 1 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200236
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200237 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160T:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200238 info->flash_id += FLASH_AM160T;
239 info->sector_count = 35;
240 info->size = 0x00200000;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200241 break; /* => 2 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200242
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200243 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160B:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200244 info->flash_id += FLASH_AM160B;
245 info->sector_count = 35;
246 info->size = 0x00200000;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200247 break; /* => 2 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200248
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200249 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200250 info->flash_id += FLASH_AM320T;
251 info->sector_count = 71;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200252 info->size = 0x00400000;
253 break; /* => 4 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200254
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200255 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200256 info->flash_id += FLASH_AM320B;
257 info->sector_count = 71;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200258 info->size = 0x00400000;
259 break; /* => 4 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200260
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200261 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322T:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200262 info->flash_id += FLASH_AMDL322T;
263 info->sector_count = 71;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200264 info->size = 0x00400000;
265 break; /* => 4 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200266
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200267 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322B:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200268 info->flash_id += FLASH_AMDL322B;
269 info->sector_count = 71;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200270 info->size = 0x00400000;
271 break; /* => 4 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200272
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200273 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323T:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200274 info->flash_id += FLASH_AMDL323T;
275 info->sector_count = 71;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200276 info->size = 0x00400000;
277 break; /* => 4 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200278
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200279 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323B:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200280 info->flash_id += FLASH_AMDL323B;
281 info->sector_count = 71;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200282 info->size = 0x00400000;
283 break; /* => 4 MB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200284
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200285 case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF020:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200286 info->flash_id += FLASH_SST020;
287 info->sector_count = 64;
288 info->size = 0x00040000;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200289 break; /* => 256 kB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200290
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200291 case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF040:
Stefan Roesea4c8d132006-06-02 16:18:04 +0200292 info->flash_id += FLASH_SST040;
293 info->sector_count = 128;
294 info->size = 0x00080000;
Wolfgang Denk2fd9eb52006-06-02 17:04:21 +0200295 break; /* => 512 kB */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200296
297 default:
298 info->flash_id = FLASH_UNKNOWN;
299 return (0); /* => no or unknown flash */
300
301 }
302
303 /* set up sector start address table */
304 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
305 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U)) {
306 for (i = 0; i < info->sector_count; i++)
307 info->start[i] = base + (i * 0x00001000);
308 } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
309 for (i = 0; i < info->sector_count; i++)
310 info->start[i] = base + (i * 0x00010000);
311 } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
312 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
313 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
314 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
315 /* set sector offsets for bottom boot block type */
316 for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
317 info->start[i] = base;
318 base += 8 << 10;
319 }
320 while (i < info->sector_count) { /* 64k regular sectors */
321 info->start[i] = base;
322 base += 64 << 10;
323 ++i;
324 }
325 } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
326 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
327 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
328 ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
329 /* set sector offsets for top boot block type */
330 base += info->size;
331 i = info->sector_count;
332 for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
333 base -= 8 << 10;
334 --i;
335 info->start[i] = base;
336 }
337 while (i > 0) { /* 64k regular sectors */
338 base -= 64 << 10;
339 --i;
340 info->start[i] = base;
341 }
342 } else {
343 if (info->flash_id & FLASH_BTYPE) {
344 /* set sector offsets for bottom boot block type */
345 info->start[0] = base + 0x00000000;
346 info->start[1] = base + 0x00004000;
347 info->start[2] = base + 0x00006000;
348 info->start[3] = base + 0x00008000;
349 for (i = 4; i < info->sector_count; i++) {
350 info->start[i] = base + (i * 0x00010000) - 0x00030000;
351 }
352 } else {
353 /* set sector offsets for top boot block type */
354 i = info->sector_count - 1;
355 info->start[i--] = base + info->size - 0x00004000;
356 info->start[i--] = base + info->size - 0x00006000;
357 info->start[i--] = base + info->size - 0x00008000;
358 for (; i >= 0; i--) {
359 info->start[i] = base + i * 0x00010000;
360 }
361 }
362 }
363
364 /* check for protected sectors */
365 for (i = 0; i < info->sector_count; i++) {
366 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
367 /* D0 = 1 if protected */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200368 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
Stefan Roesea4c8d132006-06-02 16:18:04 +0200369 if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD)
370 info->protect[i] = 0;
371 else
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200372 info->protect[i] = addr2[CONFIG_SYS_FLASH_READ2] & 1;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200373 }
374
375 /*
376 * Prevent writes to uninitialized FLASH.
377 */
378 if (info->flash_id != FLASH_UNKNOWN) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200379 addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
380 *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200381 }
382
383 return (info->size);
384}
385
386
387int flash_erase(flash_info_t *info, int s_first, int s_last)
388{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200389 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
390 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200391 int flag, prot, sect, l_sect;
392 ulong start, now, last;
393
394 if ((s_first < 0) || (s_first > s_last)) {
395 if (info->flash_id == FLASH_UNKNOWN)
396 printf ("- missing\n");
397 else
398 printf ("- no sectors to erase\n");
399 return 1;
400 }
401
402 if (info->flash_id == FLASH_UNKNOWN) {
403 printf ("Can't erase unknown flash type - aborted\n");
404 return 1;
405 }
406
407 prot = 0;
408 for (sect=s_first; sect<=s_last; ++sect)
409 if (info->protect[sect])
410 prot++;
411
412 if (prot)
413 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
414 else
415 printf ("\n");
416
417 l_sect = -1;
418
419 /* Disable interrupts which might cause a timeout here */
420 flag = disable_interrupts();
421
422 /* Start erase on unprotected sectors */
423 for (sect = s_first; sect<=s_last; sect++) {
424 if (info->protect[sect] == 0) { /* not protected */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200425 addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[sect]);
Stefan Roesea4c8d132006-06-02 16:18:04 +0200426 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200427 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
428 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
429 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
430 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
431 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
432 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200433
434 /* re-enable interrupts if necessary */
435 if (flag) {
436 enable_interrupts();
437 flag = 0;
438 }
439
440 /* data polling for D7 */
441 start = get_timer (0);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200442 while ((addr2[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
443 (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
444 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
Stefan Roesea4c8d132006-06-02 16:18:04 +0200445 return (1);
446 }
447 } else {
448 if (sect == s_first) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200449 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
450 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
451 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
452 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
453 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200454 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200455 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200456 }
457 l_sect = sect;
458 }
459 }
460
461 /* re-enable interrupts if necessary */
462 if (flag)
463 enable_interrupts();
464
465 /* wait at least 80us - let's wait 1 ms */
466 udelay (1000);
467
468 /*
469 * We wait for the last triggered sector
470 */
471 if (l_sect < 0)
472 goto DONE;
473
474 start = get_timer (0);
475 last = start;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200476 addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[l_sect]);
477 while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) != (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
478 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
Stefan Roesea4c8d132006-06-02 16:18:04 +0200479 printf ("Timeout\n");
480 return 1;
481 }
482 /* show that we're waiting */
483 if ((now - last) > 1000) { /* every second */
484 putc ('.');
485 last = now;
486 }
487 }
488
489DONE:
490 /* reset to read mode */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200491 addr = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
492 addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
Stefan Roesea4c8d132006-06-02 16:18:04 +0200493
494 printf (" done\n");
495 return 0;
496}
497
498/*
499 * Copy memory to flash, returns:
500 * 0 - OK
501 * 1 - write timeout
502 * 2 - Flash not erased
503 */
504int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
505{
506 ulong cp, wp, data;
507 int i, l, rc;
508
509 wp = (addr & ~3); /* get lower word aligned address */
510
511 /*
512 * handle unaligned start bytes
513 */
514 if ((l = addr - wp) != 0) {
515 data = 0;
516 for (i=0, cp=wp; i<l; ++i, ++cp) {
517 data = (data << 8) | (*(uchar *)cp);
518 }
519 for (; i<4 && cnt>0; ++i) {
520 data = (data << 8) | *src++;
521 --cnt;
522 ++cp;
523 }
524 for (; cnt==0 && i<4; ++i, ++cp) {
525 data = (data << 8) | (*(uchar *)cp);
526 }
527
528 if ((rc = write_word(info, wp, data)) != 0) {
529 return (rc);
530 }
531 wp += 4;
532 }
533
534 /*
535 * handle word aligned part
536 */
537 while (cnt >= 4) {
538 data = 0;
539 for (i=0; i<4; ++i)
540 data = (data << 8) | *src++;
541 if ((rc = write_word(info, wp, data)) != 0)
542 return (rc);
543 wp += 4;
544 cnt -= 4;
545 }
546
547 if (cnt == 0)
548 return (0);
549
550 /*
551 * handle unaligned tail bytes
552 */
553 data = 0;
554 for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
555 data = (data << 8) | *src++;
556 --cnt;
557 }
558 for (; i<4; ++i, ++cp)
559 data = (data << 8) | (*(uchar *)cp);
560
561 return (write_word(info, wp, data));
562}
563
564/*
565 * Write a word to Flash, returns:
566 * 0 - OK
567 * 1 - write timeout
568 * 2 - Flash not erased
569 */
570static int write_word(flash_info_t *info, ulong dest, ulong data)
571{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200572 volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
573 volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
574 volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)&data;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200575 ulong start;
576 int flag;
577 int i;
578
579 /* Check if Flash is (sufficiently) erased */
580 if ((*((vu_long *)dest) & data) != data)
581 return (2);
582
583 /* Disable interrupts which might cause a timeout here */
584 flag = disable_interrupts();
585
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200586 for (i=0; i<4/sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
587 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
588 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
589 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00A000A0;
Stefan Roesea4c8d132006-06-02 16:18:04 +0200590
591 dest2[i] = data2[i];
592
593 /* re-enable interrupts if necessary */
594 if (flag)
595 enable_interrupts();
596
597 /* data polling for D7 */
598 start = get_timer (0);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200599 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
600 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080)) {
601 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
Stefan Roesea4c8d132006-06-02 16:18:04 +0200602 return (1);
603 }
604 }
605
606 return (0);
607}