3 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * See file CREDITS for list of people who contributed to this
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.
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.
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,
32 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
34 #if defined(CFG_ENV_IS_IN_FLASH)
36 # define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
39 # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
41 # ifndef CFG_ENV_SECT_SIZE
42 # define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
46 /*-----------------------------------------------------------------------
49 #define FLAG_PROTECT_SET 0x01
50 #define FLAG_PROTECT_CLEAR 0x02
52 /* Board support for 1 or 2 flash devices */
53 #undef FLASH_PORT_WIDTH32
54 #define FLASH_PORT_WIDTH16
56 #ifdef FLASH_PORT_WIDTH16
57 #define FLASH_PORT_WIDTH ushort
58 #define FLASH_PORT_WIDTHV vu_short
60 #define FLASH_PORT_WIDTH ulong
61 #define FLASH_PORT_WIDTHV vu_long
64 #define FPW FLASH_PORT_WIDTH
65 #define FPWV FLASH_PORT_WIDTHV
67 /*-----------------------------------------------------------------------
70 static ulong flash_get_size (FPW * addr, flash_info_t * info);
71 static int write_data (flash_info_t * info, ulong dest, FPW data);
72 static void flash_get_offsets (ulong base, flash_info_t * info);
74 /*-----------------------------------------------------------------------
77 unsigned long flash_init (void)
79 volatile immap_t *immap = (immap_t *) CFG_IMMR;
80 volatile memctl8xx_t *memctl = &immap->im_memctl;
81 unsigned long size_b0;
84 /* Init: no FLASHes known */
85 for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
86 flash_info[i].flash_id = FLASH_UNKNOWN;
89 /* Static FLASH Bank configuration here - FIXME XXX */
90 size_b0 = flash_get_size ((FPW *) FLASH_BASE0_PRELIM, &flash_info[0]);
92 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
93 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
94 size_b0, size_b0 << 20);
97 /* Remap FLASH according to real size */
98 memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000);
99 memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V;
101 /* Re-do sizing to get full correct info */
102 size_b0 = flash_get_size ((FPW *) CFG_FLASH_BASE, &flash_info[0]);
104 flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
106 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
107 /* monitor protection ON by default */
108 (void) flash_protect (FLAG_PROTECT_SET,
110 CFG_FLASH_BASE + CFG_MONITOR_LEN - 1,
114 #ifdef CFG_ENV_IS_IN_FLASH
115 /* ENV protection ON by default */
116 flash_protect (FLAG_PROTECT_SET,
118 CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
122 flash_info[0].size = size_b0;
127 /*-----------------------------------------------------------------------
129 static void flash_get_offsets (ulong base, flash_info_t * info)
133 if (info->flash_id == FLASH_UNKNOWN) {
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);
144 /*-----------------------------------------------------------------------
146 void flash_print_info (flash_info_t * info)
150 if (info->flash_id == FLASH_UNKNOWN) {
151 printf ("missing or unknown FLASH type\n");
155 switch (info->flash_id & FLASH_VENDMASK) {
156 case FLASH_MAN_INTEL:
160 printf ("Unknown Vendor ");
164 switch (info->flash_id & FLASH_TYPEMASK) {
165 case FLASH_28F320J3A:
166 printf ("28F320J3A\n");
168 case FLASH_28F640J3A:
169 printf ("28F640J3A\n");
171 case FLASH_28F128J3A:
172 printf ("28F128J3A\n");
175 printf ("Unknown Chip Type\n");
179 printf (" Size: %ld MB in %d Sectors\n",
180 info->size >> 20, info->sector_count);
182 printf (" Sector Start Addresses:");
183 for (i = 0; i < info->sector_count; ++i) {
188 info->protect[i] ? " (RO)" : " ");
194 /*-----------------------------------------------------------------------
198 /*-----------------------------------------------------------------------
202 * The following code cannot be run from FLASH!
205 static ulong flash_get_size (FPW * addr, flash_info_t * info)
209 /* Write auto select command: read Manufacturer ID */
210 addr[0x5555] = (FPW) 0x00AA00AA;
211 addr[0x2AAA] = (FPW) 0x00550055;
212 addr[0x5555] = (FPW) 0x00900090;
216 debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
219 case (FPW) INTEL_MANUFACT:
220 info->flash_id = FLASH_MAN_INTEL;
223 info->flash_id = FLASH_UNKNOWN;
224 info->sector_count = 0;
226 addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
227 return (0); /* no or unknown flash */
230 value = addr[1]; /* device ID */
232 debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
235 case (FPW) INTEL_ID_28F320J3A:
236 info->flash_id += FLASH_28F320J3A;
237 info->sector_count = 32;
238 info->size = 0x00400000;
241 case (FPW) INTEL_ID_28F640J3A:
242 info->flash_id += FLASH_28F640J3A;
243 info->sector_count = 64;
244 info->size = 0x00800000;
247 case (FPW) INTEL_ID_28F128J3A:
248 info->flash_id += FLASH_28F128J3A;
249 info->sector_count = 128;
250 info->size = 0x01000000;
251 break; /* => 16 MB */
254 info->flash_id = FLASH_UNKNOWN;
258 if (info->sector_count > CFG_MAX_FLASH_SECT) {
259 printf ("** ERROR: sector count %d > max (%d) **\n",
260 info->sector_count, CFG_MAX_FLASH_SECT);
261 info->sector_count = CFG_MAX_FLASH_SECT;
264 addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
270 /*-----------------------------------------------------------------------
273 int flash_erase (flash_info_t * info, int s_first, int s_last)
275 int flag, prot, sect;
276 ulong type, start, now, last;
279 if ((s_first < 0) || (s_first > s_last)) {
280 if (info->flash_id == FLASH_UNKNOWN) {
281 printf ("- missing\n");
283 printf ("- no sectors to erase\n");
288 type = (info->flash_id & FLASH_VENDMASK);
289 if ((type != FLASH_MAN_INTEL)) {
290 printf ("Can't erase unknown flash type %08lx - aborted\n",
296 for (sect = s_first; sect <= s_last; ++sect) {
297 if (info->protect[sect]) {
303 printf ("- Warning: %d protected sectors will not be erased!\n",
309 start = get_timer (0);
311 /* Start erase on unprotected sectors */
312 for (sect = s_first; sect <= s_last; sect++) {
313 if (info->protect[sect] == 0) { /* not protected */
314 FPWV *addr = (FPWV *) (info->start[sect]);
317 /* Disable interrupts which might cause a timeout here */
318 flag = disable_interrupts ();
320 *addr = (FPW) 0x00500050; /* clear status register */
321 *addr = (FPW) 0x00200020; /* erase setup */
322 *addr = (FPW) 0x00D000D0; /* erase confirm */
324 /* re-enable interrupts if necessary */
326 enable_interrupts ();
328 /* wait at least 80us - let's wait 1 ms */
331 while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
332 if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
333 printf ("Timeout\n");
334 *addr = (FPW) 0x00B000B0; /* suspend erase */
335 *addr = (FPW) 0x00FF00FF; /* reset to read mode */
340 /* show that we're waiting */
341 if ((now - last) > 1000) { /* every second */
347 *addr = (FPW) 0x00FF00FF; /* reset to read mode */
354 /*-----------------------------------------------------------------------
355 * Copy memory to flash, returns:
358 * 2 - Flash not erased
359 * 4 - Flash not identified
362 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
367 int i, l, rc, port_width;
369 if (info->flash_id == FLASH_UNKNOWN) {
372 /* get lower word aligned address */
373 #ifdef FLASH_PORT_WIDTH16
382 * handle unaligned start bytes
384 if ((l = addr - wp) != 0) {
386 for (i = 0, cp = wp; i < l; ++i, ++cp) {
387 data = (data << 8) | (*(uchar *) cp);
389 for (; i < port_width && cnt > 0; ++i) {
390 data = (data << 8) | *src++;
394 for (; cnt == 0 && i < port_width; ++i, ++cp) {
395 data = (data << 8) | (*(uchar *) cp);
398 if ((rc = write_data (info, wp, data)) != 0) {
405 * handle word aligned part
407 while (cnt >= port_width) {
409 for (i = 0; i < port_width; ++i) {
410 data = (data << 8) | *src++;
412 if ((rc = write_data (info, wp, data)) != 0) {
424 * handle unaligned tail bytes
427 for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
428 data = (data << 8) | *src++;
431 for (; i < port_width; ++i, ++cp) {
432 data = (data << 8) | (*(uchar *) cp);
435 return (write_data (info, wp, data));
438 /*-----------------------------------------------------------------------
439 * Write a word or halfword to Flash, returns:
442 * 2 - Flash not erased
444 static int write_data (flash_info_t * info, ulong dest, FPW data)
446 FPWV *addr = (FPWV *) dest;
451 /* Check if Flash is (sufficiently) erased */
452 if ((*addr & data) != data) {
453 printf ("not erased at %08lx (%x)\n", (ulong) addr, *addr);
456 /* Disable interrupts which might cause a timeout here */
457 flag = disable_interrupts ();
459 *addr = (FPW) 0x00400040; /* write setup */
462 /* re-enable interrupts if necessary */
464 enable_interrupts ();
466 start = get_timer (0);
468 while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
469 if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
470 *addr = (FPW) 0x00FF00FF; /* restore read mode */
475 *addr = (FPW) 0x00FF00FF; /* restore read mode */