2 * (C) Copyright 2000-2004
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
11 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
13 /*-----------------------------------------------------------------------
16 static ulong flash_get_size(vu_long * addr, flash_info_t * info);
17 static int write_byte(flash_info_t * info, ulong dest, uchar data);
18 static void flash_get_offsets(ulong base, flash_info_t * info);
20 /*-----------------------------------------------------------------------
23 unsigned long flash_init(void)
25 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
26 volatile memctl8xx_t *memctl = &immap->im_memctl;
28 #if CONFIG_NETPHONE_VERSION == 2
33 /* Init: no FLASHes known */
34 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
35 flash_info[i].flash_id = FLASH_UNKNOWN;
37 size = flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]);
39 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
40 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
44 /* Remap FLASH according to real size */
45 memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size & 0xFFFF8000);
46 memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | (memctl->memc_br0 & ~(BR_BA_MSK));
48 /* Re-do sizing to get full correct info */
49 size = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE, &flash_info[0]);
51 flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]);
53 /* monitor protection ON by default */
54 flash_protect(FLAG_PROTECT_SET,
55 CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
58 flash_protect ( FLAG_PROTECT_SET,
60 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
63 #ifdef CONFIG_ENV_ADDR_REDUND
64 flash_protect ( FLAG_PROTECT_SET,
65 CONFIG_ENV_ADDR_REDUND,
66 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
70 flash_info[0].size = size;
72 #if CONFIG_NETPHONE_VERSION == 2
73 size1 = flash_get_size((vu_long *) FLASH_BASE4_PRELIM, &flash_info[1]);
75 if (flash_info[1].flash_id == FLASH_UNKNOWN)
76 printf("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n", size1, size1 << 20);
78 /* Remap FLASH according to real size */
79 memctl->memc_or4 = CONFIG_SYS_OR_TIMING_FLASH | (-size1 & 0xFFFF8000);
80 memctl->memc_br4 = (CONFIG_SYS_FLASH_BASE4 & BR_BA_MSK) | (memctl->memc_br4 & ~(BR_BA_MSK));
82 /* Re-do sizing to get full correct info */
83 size1 = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE4, &flash_info[1]);
85 flash_get_offsets(CONFIG_SYS_FLASH_BASE4, &flash_info[1]);
89 memctl->memc_br4 &= ~BR_V;
95 /*-----------------------------------------------------------------------
97 static void flash_get_offsets(ulong base, flash_info_t * info)
101 /* set up sector start address table */
102 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
103 for (i = 0; i < info->sector_count; i++) {
104 info->start[i] = base + (i * 0x00010000);
106 } else if (info->flash_id & FLASH_BTYPE) {
107 /* set sector offsets for bottom boot block type */
108 info->start[0] = base + 0x00000000;
109 info->start[1] = base + 0x00004000;
110 info->start[2] = base + 0x00006000;
111 info->start[3] = base + 0x00008000;
112 for (i = 4; i < info->sector_count; i++) {
113 info->start[i] = base + (i * 0x00010000) - 0x00030000;
116 /* set sector offsets for top boot block type */
117 i = info->sector_count - 1;
118 info->start[i--] = base + info->size - 0x00004000;
119 info->start[i--] = base + info->size - 0x00006000;
120 info->start[i--] = base + info->size - 0x00008000;
121 for (; i >= 0; i--) {
122 info->start[i] = base + i * 0x00010000;
127 /*-----------------------------------------------------------------------
129 void flash_print_info(flash_info_t * info)
133 if (info->flash_id == FLASH_UNKNOWN) {
134 printf("missing or unknown FLASH type\n");
138 switch (info->flash_id & FLASH_VENDMASK) {
149 printf("Unknown Vendor ");
153 switch (info->flash_id & FLASH_TYPEMASK) {
155 printf("AM29LV040B (4 Mbit, bottom boot sect)\n");
158 printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
161 printf("AM29LV400T (4 Mbit, top boot sector)\n");
164 printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
167 printf("AM29LV800T (8 Mbit, top boot sector)\n");
170 printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
173 printf("AM29LV160T (16 Mbit, top boot sector)\n");
176 printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
179 printf("AM29LV320T (32 Mbit, top boot sector)\n");
182 printf("Unknown Chip Type\n");
186 printf(" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count);
188 printf(" Sector Start Addresses:");
189 for (i = 0; i < info->sector_count; ++i) {
192 printf(" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " ");
197 /*-----------------------------------------------------------------------
201 /*-----------------------------------------------------------------------
205 * The following code cannot be run from FLASH!
208 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
213 vu_char *caddr = (vu_char *) addr;
214 ulong base = (ulong) addr;
216 /* Write auto select command: read Manufacturer ID */
217 caddr[0x0555] = 0xAA;
218 caddr[0x02AA] = 0x55;
219 caddr[0x0555] = 0x90;
223 case (AMD_MANUFACT & 0xFF):
224 info->flash_id = FLASH_MAN_AMD;
226 case (FUJ_MANUFACT & 0xFF):
227 info->flash_id = FLASH_MAN_FUJ;
229 case (MX_MANUFACT & 0xFF):
230 info->flash_id = FLASH_MAN_MX;
232 case (STM_MANUFACT & 0xFF):
233 info->flash_id = FLASH_MAN_STM;
236 info->flash_id = FLASH_UNKNOWN;
237 info->sector_count = 0;
239 return (0); /* no or unknown flash */
242 pid = caddr[1]; /* device ID */
244 case (AMD_ID_LV400T & 0xFF):
245 info->flash_id += FLASH_AM400T;
246 info->sector_count = 11;
247 info->size = 0x00080000;
248 break; /* => 512 kB */
250 case (AMD_ID_LV400B & 0xFF):
251 info->flash_id += FLASH_AM400B;
252 info->sector_count = 11;
253 info->size = 0x00080000;
254 break; /* => 512 kB */
256 case (AMD_ID_LV800T & 0xFF):
257 info->flash_id += FLASH_AM800T;
258 info->sector_count = 19;
259 info->size = 0x00100000;
262 case (AMD_ID_LV800B & 0xFF):
263 info->flash_id += FLASH_AM800B;
264 info->sector_count = 19;
265 info->size = 0x00100000;
268 case (AMD_ID_LV160T & 0xFF):
269 info->flash_id += FLASH_AM160T;
270 info->sector_count = 35;
271 info->size = 0x00200000;
274 case (AMD_ID_LV160B & 0xFF):
275 info->flash_id += FLASH_AM160B;
276 info->sector_count = 35;
277 info->size = 0x00200000;
280 case (AMD_ID_LV040B & 0xFF):
281 info->flash_id += FLASH_AM040;
282 info->sector_count = 8;
283 info->size = 0x00080000;
286 case (STM_ID_M29W040B & 0xFF):
287 info->flash_id += FLASH_AM040;
288 info->sector_count = 8;
289 info->size = 0x00080000;
292 #if 0 /* enable when device IDs are available */
293 case (AMD_ID_LV320T & 0xFF):
294 info->flash_id += FLASH_AM320T;
295 info->sector_count = 67;
296 info->size = 0x00400000;
299 case (AMD_ID_LV320B & 0xFF):
300 info->flash_id += FLASH_AM320B;
301 info->sector_count = 67;
302 info->size = 0x00400000;
306 info->flash_id = FLASH_UNKNOWN;
307 return (0); /* => no or unknown flash */
312 /* set up sector start address table */
313 if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
314 for (i = 0; i < info->sector_count; i++) {
315 info->start[i] = base + (i * 0x00010000);
317 } else if (info->flash_id & FLASH_BTYPE) {
318 /* set sector offsets for bottom boot block type */
319 info->start[0] = base + 0x00000000;
320 info->start[1] = base + 0x00004000;
321 info->start[2] = base + 0x00006000;
322 info->start[3] = base + 0x00008000;
323 for (i = 4; i < info->sector_count; i++) {
324 info->start[i] = base + (i * 0x00010000) - 0x00030000;
327 /* set sector offsets for top boot block type */
328 i = info->sector_count - 1;
329 info->start[i--] = base + info->size - 0x00004000;
330 info->start[i--] = base + info->size - 0x00006000;
331 info->start[i--] = base + info->size - 0x00008000;
332 for (; i >= 0; i--) {
333 info->start[i] = base + i * 0x00010000;
337 /* check for protected sectors */
338 for (i = 0; i < info->sector_count; i++) {
339 /* read sector protection: D0 = 1 if protected */
340 caddr = (volatile unsigned char *)(info->start[i]);
341 info->protect[i] = caddr[2] & 1;
345 * Prevent writes to uninitialized FLASH.
347 if (info->flash_id != FLASH_UNKNOWN) {
348 caddr = (vu_char *) info->start[0];
350 caddr[0x0555] = 0xAA;
351 caddr[0x02AA] = 0x55;
352 caddr[0x0555] = 0xF0;
361 /*-----------------------------------------------------------------------
364 int flash_erase(flash_info_t * info, int s_first, int s_last)
366 vu_char *addr = (vu_char *) (info->start[0]);
367 int flag, prot, sect, l_sect;
368 ulong start, now, last;
370 if ((s_first < 0) || (s_first > s_last)) {
371 if (info->flash_id == FLASH_UNKNOWN) {
372 printf("- missing\n");
374 printf("- no sectors to erase\n");
379 if ((info->flash_id == FLASH_UNKNOWN) ||
380 (info->flash_id > FLASH_AMD_COMP)) {
381 printf("Can't erase unknown flash type %08lx - aborted\n", info->flash_id);
386 for (sect = s_first; sect <= s_last; ++sect) {
387 if (info->protect[sect]) {
393 printf("- Warning: %d protected sectors will not be erased!\n", prot);
400 /* Disable interrupts which might cause a timeout here */
401 flag = disable_interrupts();
409 /* Start erase on unprotected sectors */
410 for (sect = s_first; sect <= s_last; sect++) {
411 if (info->protect[sect] == 0) { /* not protected */
412 addr = (vu_char *) (info->start[sect]);
418 /* re-enable interrupts if necessary */
422 /* wait at least 80us - let's wait 1 ms */
426 * We wait for the last triggered sector
431 start = get_timer(0);
433 addr = (vu_char *) (info->start[l_sect]);
434 while ((addr[0] & 0x80) != 0x80) {
435 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
439 /* show that we're waiting */
440 if ((now - last) > 1000) { /* every second */
447 /* reset to read mode */
448 addr = (vu_char *) info->start[0];
449 addr[0] = 0xF0; /* reset bank */
455 /*-----------------------------------------------------------------------
456 * Copy memory to flash, returns:
459 * 2 - Flash not erased
462 int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
467 if ((rc = write_byte(info, addr++, *src++)) != 0) {
476 /*-----------------------------------------------------------------------
477 * Write a word to Flash, returns:
480 * 2 - Flash not erased
482 static int write_byte(flash_info_t * info, ulong dest, uchar data)
484 vu_char *addr = (vu_char *) (info->start[0]);
488 /* Check if Flash is (sufficiently) erased */
489 if ((*((vu_char *) dest) & data) != data) {
492 /* Disable interrupts which might cause a timeout here */
493 flag = disable_interrupts();
499 *((vu_char *) dest) = data;
501 /* re-enable interrupts if necessary */
505 /* data polling for D7 */
506 start = get_timer(0);
507 while ((*((vu_char *) dest) & 0x80) != (data & 0x80)) {
508 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {