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,
30 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
31 extern u_long *my_sernum; /* from nx823.c */
33 /*-----------------------------------------------------------------------
36 #define FLAG_PROTECT_SET 0x01
37 #define FLAG_PROTECT_CLEAR 0x02
39 /* Board support for 1 or 2 flash devices */
40 #undef FLASH_PORT_WIDTH32
41 #define FLASH_PORT_WIDTH16
43 #ifdef FLASH_PORT_WIDTH16
44 #define FLASH_PORT_WIDTH ushort
45 #define FLASH_PORT_WIDTHV vu_short
47 #define FLASH_PORT_WIDTH ulong
48 #define FLASH_PORT_WIDTHV vu_long
51 #define FPW FLASH_PORT_WIDTH
52 #define FPWV FLASH_PORT_WIDTHV
54 /*-----------------------------------------------------------------------
57 static ulong flash_get_size (FPW *addr, flash_info_t *info);
58 static int write_data (flash_info_t *info, ulong dest, FPW data);
59 static void flash_get_offsets (ulong base, flash_info_t *info);
61 /*-----------------------------------------------------------------------
64 unsigned long flash_init (void)
66 volatile immap_t *immap = (immap_t *)CFG_IMMR;
67 volatile memctl8xx_t *memctl = &immap->im_memctl;
68 unsigned long size_b0;
71 /* Init: no FLASHes known */
72 for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
73 flash_info[i].flash_id = FLASH_UNKNOWN;
76 /* Static FLASH Bank configuration here - FIXME XXX */
77 size_b0 = flash_get_size((FPW *)FLASH_BASE0_PRELIM, &flash_info[0]);
79 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
80 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
81 size_b0, size_b0<<20);
84 /* Remap FLASH according to real size */
85 memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000);
86 memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V;
88 /* Re-do sizing to get full correct info */
89 size_b0 = flash_get_size((FPW *)CFG_FLASH_BASE, &flash_info[0]);
91 flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
93 /* monitor protection ON by default */
94 (void)flash_protect(FLAG_PROTECT_SET,
96 CFG_FLASH_BASE+monitor_flash_len-1,
99 flash_info[0].size = size_b0;
104 /*-----------------------------------------------------------------------
106 static void flash_get_offsets (ulong base, flash_info_t *info)
110 if (info->flash_id == FLASH_UNKNOWN) {
114 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
115 for (i = 0; i < info->sector_count; i++) {
116 info->start[i] = base + (i * 0x00020000);
121 /*-----------------------------------------------------------------------
123 void flash_print_info (flash_info_t *info)
127 if (info->flash_id == FLASH_UNKNOWN) {
128 printf ("missing or unknown FLASH type\n");
132 switch (info->flash_id & FLASH_VENDMASK) {
133 case FLASH_MAN_INTEL: printf ("INTEL "); break;
134 default: printf ("Unknown Vendor "); break;
137 switch (info->flash_id & FLASH_TYPEMASK) {
138 case FLASH_28F320J3A:
139 printf ("28F320J3A\n"); break;
140 case FLASH_28F640J3A:
141 printf ("28F640J3A\n"); break;
142 case FLASH_28F128J3A:
143 printf ("28F128J3A\n"); break;
144 default: printf ("Unknown Chip Type\n"); break;
147 printf (" Size: %ld MB in %d Sectors\n",
148 info->size >> 20, info->sector_count);
150 printf (" Sector Start Addresses:");
151 for (i=0; i<info->sector_count; ++i) {
156 info->protect[i] ? " (RO)" : " "
163 /*-----------------------------------------------------------------------
167 /*-----------------------------------------------------------------------
171 * The following code cannot be run from FLASH!
174 static ulong flash_get_size (FPW *addr, flash_info_t *info)
178 /* Write auto select command: read Manufacturer ID */
179 addr[0x5555] = (FPW)0x00AA00AA;
180 addr[0x2AAA] = (FPW)0x00550055;
181 addr[0x5555] = (FPW)0x00900090;
186 case (FPW)INTEL_MANUFACT:
187 info->flash_id = FLASH_MAN_INTEL;
190 info->flash_id = FLASH_UNKNOWN;
191 info->sector_count = 0;
193 addr[0] = (FPW)0x00FF00FF; /* restore read mode */
194 return (0); /* no or unknown flash */
197 value = addr[1]; /* device ID */
200 case (FPW)INTEL_ID_28F320J3A:
201 info->flash_id += FLASH_28F320J3A;
202 info->sector_count = 32;
203 info->size = 0x00400000;
206 case (FPW)INTEL_ID_28F640J3A:
207 info->flash_id += FLASH_28F640J3A;
208 info->sector_count = 64;
209 info->size = 0x00800000;
212 case (FPW)INTEL_ID_28F128J3A:
213 info->flash_id += FLASH_28F128J3A;
214 info->sector_count = 128;
215 info->size = 0x01000000;
216 break; /* => 16 MB */
219 info->flash_id = FLASH_UNKNOWN;
223 if (info->sector_count > CFG_MAX_FLASH_SECT) {
224 printf ("** ERROR: sector count %d > max (%d) **\n",
225 info->sector_count, CFG_MAX_FLASH_SECT);
226 info->sector_count = CFG_MAX_FLASH_SECT;
229 addr[0] = (FPW)0x00FF00FF; /* restore read mode */
235 /*-----------------------------------------------------------------------
238 int flash_erase (flash_info_t *info, int s_first, int s_last)
240 int flag, prot, sect;
241 ulong type, start, now, last;
244 if ((s_first < 0) || (s_first > s_last)) {
245 if (info->flash_id == FLASH_UNKNOWN) {
246 printf ("- missing\n");
248 printf ("- no sectors to erase\n");
253 type = (info->flash_id & FLASH_VENDMASK);
254 if ((type != FLASH_MAN_INTEL)) {
255 printf ("Can't erase unknown flash type %08lx - aborted\n",
261 for (sect=s_first; sect<=s_last; ++sect) {
262 if (info->protect[sect]) {
268 printf ("- Warning: %d protected sectors will not be erased!\n",
274 start = get_timer (0);
276 /* Start erase on unprotected sectors */
277 for (sect = s_first; sect<=s_last; sect++) {
278 if (info->protect[sect] == 0) { /* not protected */
279 FPWV *addr = (FPWV *)(info->start[sect]);
282 /* Disable interrupts which might cause a timeout here */
283 flag = disable_interrupts();
285 *addr = (FPW)0x00500050; /* clear status register */
286 *addr = (FPW)0x00200020; /* erase setup */
287 *addr = (FPW)0x00D000D0; /* erase confirm */
289 /* re-enable interrupts if necessary */
293 /* wait at least 80us - let's wait 1 ms */
296 while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) {
297 if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
298 printf ("Timeout\n");
299 *addr = (FPW)0x00B000B0; /* suspend erase */
300 *addr = (FPW)0x00FF00FF; /* reset to read mode */
305 /* show that we're waiting */
306 if ((now - last) > 1000) { /* every second */
312 *addr = (FPW)0x00FF00FF; /* reset to read mode */
319 /*-----------------------------------------------------------------------
320 * Copy memory to flash, returns:
323 * 2 - Flash not erased
324 * 4 - Flash not identified
327 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
331 int count, i, l, rc, port_width;
333 if (info->flash_id == FLASH_UNKNOWN) {
336 /* get lower word aligned address */
337 #ifdef FLASH_PORT_WIDTH16
345 /* save sernum if needed */
346 if (addr >= CFG_FLASH_SN_SECTOR && addr < CFG_FLASH_SN_BASE)
348 u_long dest = CFG_FLASH_SN_BASE;
349 u_short *sn = (u_short *)my_sernum;
351 printf("(saving sernum)");
354 if ((rc = write_data(info, dest, sn[i])) != 0) {
362 * handle unaligned start bytes
364 if ((l = addr - wp) != 0) {
366 for (i=0, cp=wp; i<l; ++i, ++cp) {
367 data = (data << 8) | (*(uchar *)cp);
369 for (; i<port_width && cnt>0; ++i) {
370 data = (data << 8) | *src++;
374 for (; cnt==0 && i<port_width; ++i, ++cp) {
375 data = (data << 8) | (*(uchar *)cp);
378 if ((rc = write_data(info, wp, data)) != 0) {
385 * handle word aligned part
388 while (cnt >= port_width) {
390 for (i=0; i<port_width; ++i) {
391 data = (data << 8) | *src++;
393 if ((rc = write_data(info, wp, data)) != 0) {
410 * handle unaligned tail bytes
413 for (i=0, cp=wp; i<port_width && cnt>0; ++i, ++cp) {
414 data = (data << 8) | *src++;
417 for (; i<port_width; ++i, ++cp) {
418 data = (data << 8) | (*(uchar *)cp);
421 return (write_data(info, wp, data));
424 /*-----------------------------------------------------------------------
425 * Write a word or halfword to Flash, returns:
428 * 2 - Flash not erased
430 static int write_data (flash_info_t *info, ulong dest, FPW data)
432 FPWV *addr = (FPWV *)dest;
437 /* Check if Flash is (sufficiently) erased */
438 if ((*addr & data) != data) {
439 printf("not erased at %08lx (%x)\n",(ulong)addr,*addr);
442 /* Disable interrupts which might cause a timeout here */
443 flag = disable_interrupts();
445 *addr = (FPW)0x00400040; /* write setup */
448 /* re-enable interrupts if necessary */
452 start = get_timer (0);
454 while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) {
455 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
456 *addr = (FPW)0x00FF00FF; /* restore read mode */
461 *addr = (FPW)0x00FF00FF; /* restore read mode */