3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #define FLASH_BANK_SIZE 0x1000000
28 #define MAIN_SECT_SIZE 0x20000
30 flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
33 /*-----------------------------------------------------------------------
36 ulong flash_init (void)
41 for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
44 flash_info[i].flash_id =
45 (INTEL_MANUFACT & FLASH_VENDMASK) |
46 (INTEL_ID_28F128J3 & FLASH_TYPEMASK);
47 flash_info[i].size = FLASH_BANK_SIZE;
48 flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
49 memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
51 flashbase = PHYS_FLASH_1;
53 panic ("configured too many flash banks!\n");
54 for (j = 0; j < flash_info[i].sector_count; j++) {
55 flash_info[i].start[j] = flashbase + j * MAIN_SECT_SIZE;
57 size += flash_info[i].size;
60 /* Protect monitor and environment sectors
62 flash_protect ( FLAG_PROTECT_SET,
64 CFG_FLASH_BASE + monitor_flash_len - 1,
67 flash_protect ( FLAG_PROTECT_SET,
69 CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]);
74 /*-----------------------------------------------------------------------
76 void flash_print_info (flash_info_t * info)
80 switch (info->flash_id & FLASH_VENDMASK) {
81 case (INTEL_MANUFACT & FLASH_VENDMASK):
85 printf ("Unknown Vendor ");
89 switch (info->flash_id & FLASH_TYPEMASK) {
90 case (INTEL_ID_28F128J3 & FLASH_TYPEMASK):
91 printf ("28F128J3 (128Mbit)\n");
94 printf ("Unknown Chip Type\n");
99 printf (" Size: %ld MB in %d Sectors\n",
100 info->size >> 20, info->sector_count);
102 printf (" Sector Start Addresses:");
103 for (i = 0; i < info->sector_count; i++) {
107 printf (" %08lX%s", info->start[i],
108 info->protect[i] ? " (RO)" : " ");
115 /*-----------------------------------------------------------------------
118 int flash_erase (flash_info_t * info, int s_first, int s_last)
120 int flag, prot, sect;
123 if (info->flash_id == FLASH_UNKNOWN)
124 return ERR_UNKNOWN_FLASH_TYPE;
126 if ((s_first < 0) || (s_first > s_last)) {
130 if ((info->flash_id & FLASH_VENDMASK) !=
131 (INTEL_MANUFACT & FLASH_VENDMASK)) {
132 return ERR_UNKNOWN_FLASH_VENDOR;
136 for (sect = s_first; sect <= s_last; ++sect) {
137 if (info->protect[sect]) {
142 return ERR_PROTECTED;
145 * Disable interrupts which might cause a timeout
146 * here. Remember that our exception vectors are
147 * at address 0 in the flash, and we don't want a
148 * (ticker) exception to happen while the flash
149 * chip is in programming mode.
151 flag = disable_interrupts ();
153 /* Start erase on unprotected sectors */
154 for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
156 printf ("Erasing sector %2d ... ", sect);
158 /* arm simple, non interrupt dependent timer */
159 reset_timer_masked ();
161 if (info->protect[sect] == 0) { /* not protected */
162 vu_short *addr = (vu_short *) (info->start[sect]);
164 *addr = 0x20; /* erase setup */
165 *addr = 0xD0; /* erase confirm */
167 while ((*addr & 0x80) != 0x80) {
168 if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
169 *addr = 0xB0; /* suspend erase */
170 *addr = 0xFF; /* reset to read mode */
176 /* clear status register command */
178 /* reset to read mode */
184 printf ("User Interrupt!\n");
188 /* allow flash to settle - wait 10 ms */
189 udelay_masked (10000);
192 enable_interrupts ();
197 /*-----------------------------------------------------------------------
198 * Copy memory to flash
201 static int write_word (flash_info_t * info, ulong dest, ushort data)
203 vu_short *addr = (vu_short *) dest, val;
207 /* Check if Flash is (sufficiently) erased
209 if ((*addr & data) != data)
210 return ERR_NOT_ERASED;
213 * Disable interrupts which might cause a timeout
214 * here. Remember that our exception vectors are
215 * at address 0 in the flash, and we don't want a
216 * (ticker) exception to happen while the flash
217 * chip is in programming mode.
219 flag = disable_interrupts ();
221 /* clear status register command */
224 /* program set-up command */
227 /* latch address/data */
230 /* arm simple, non interrupt dependent timer */
231 reset_timer_masked ();
233 /* wait while polling the status register */
234 while (((val = *addr) & 0x80) != 0x80) {
235 if (get_timer_masked () > CFG_FLASH_WRITE_TOUT) {
237 /* suspend program command */
243 if (val & 0x1A) { /* check for error */
244 printf ("\nFlash write error %02x at address %08lx\n",
245 (int) val, (unsigned long) dest);
246 if (val & (1 << 3)) {
247 printf ("Voltage range error.\n");
251 if (val & (1 << 1)) {
252 printf ("Device protect error.\n");
256 if (val & (1 << 4)) {
257 printf ("Programming error.\n");
266 /* read array command */
270 enable_interrupts ();
275 /*-----------------------------------------------------------------------
276 * Copy memory to flash.
279 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
286 wp = (addr & ~1); /* get lower word aligned address */
289 * handle unaligned start bytes
291 if ((l = addr - wp) != 0) {
293 for (i = 0, cp = wp; i < l; ++i, ++cp) {
294 data = (data >> 8) | (*(uchar *) cp << 8);
296 for (; i < 2 && cnt > 0; ++i) {
297 data = (data >> 8) | (*src++ << 8);
301 for (; cnt == 0 && i < 2; ++i, ++cp) {
302 data = (data >> 8) | (*(uchar *) cp << 8);
305 if ((rc = write_word (info, wp, data)) != 0) {
312 * handle word aligned part
315 data = *((vu_short *) src);
316 if ((rc = write_word (info, wp, data)) != 0) {
329 * handle unaligned tail bytes
332 for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) {
333 data = (data >> 8) | (*src++ << 8);
336 for (; i < 2; ++i, ++cp) {
337 data = (data >> 8) | (*(uchar *) cp << 8);
340 return write_word (info, wp, data);