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rename CFG_ macros to CONFIG_SYS
[people/ms/u-boot.git] / board / ep7312 / flash.c
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1/*
2 * (C) Copyright 2002
3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
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.
13 *
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.
18 *
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,
22 * MA 02111-1307 USA
23 */
24
25#include <common.h>
26
27#define FLASH_BANK_SIZE 0x1000000
28#define MAIN_SECT_SIZE 0x20000
29
6d0f6bcf 30flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
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31
32
33/*-----------------------------------------------------------------------
34 */
35
36ulong flash_init (void)
37{
38 int i, j;
39 ulong size = 0;
40
6d0f6bcf 41 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
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42 ulong flashbase = 0;
43
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;
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JCPV
48 flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
49 memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
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50 if (i == 0)
51 flashbase = PHYS_FLASH_1;
52 else
5f535fe1 53 panic ("configured too many flash banks!\n");
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54 for (j = 0; j < flash_info[i].sector_count; j++) {
55 flash_info[i].start[j] = flashbase + j * MAIN_SECT_SIZE;
56 }
57 size += flash_info[i].size;
58 }
59
60 /* Protect monitor and environment sectors
61 */
62 flash_protect ( FLAG_PROTECT_SET,
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JCPV
63 CONFIG_SYS_FLASH_BASE,
64 CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
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65 &flash_info[0]);
66
67 flash_protect ( FLAG_PROTECT_SET,
0e8d1586
JCPV
68 CONFIG_ENV_ADDR,
69 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
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70
71 return size;
72}
73
74/*-----------------------------------------------------------------------
75 */
76void flash_print_info (flash_info_t * info)
77{
78 int i;
79
80 switch (info->flash_id & FLASH_VENDMASK) {
81 case (INTEL_MANUFACT & FLASH_VENDMASK):
82 printf ("Intel: ");
83 break;
84 default:
85 printf ("Unknown Vendor ");
86 break;
87 }
88
89 switch (info->flash_id & FLASH_TYPEMASK) {
90 case (INTEL_ID_28F128J3 & FLASH_TYPEMASK):
91 printf ("28F128J3 (128Mbit)\n");
92 break;
93 default:
94 printf ("Unknown Chip Type\n");
95 goto Done;
96 break;
97 }
98
99 printf (" Size: %ld MB in %d Sectors\n",
100 info->size >> 20, info->sector_count);
101
102 printf (" Sector Start Addresses:");
103 for (i = 0; i < info->sector_count; i++) {
104 if ((i % 5) == 0) {
105 printf ("\n ");
106 }
107 printf (" %08lX%s", info->start[i],
108 info->protect[i] ? " (RO)" : " ");
109 }
110 printf ("\n");
111
e86e5a07 112Done: ;
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113}
114
115/*-----------------------------------------------------------------------
116 */
117
118int flash_erase (flash_info_t * info, int s_first, int s_last)
119{
120 int flag, prot, sect;
121 int rc = ERR_OK;
122
123 if (info->flash_id == FLASH_UNKNOWN)
124 return ERR_UNKNOWN_FLASH_TYPE;
125
126 if ((s_first < 0) || (s_first > s_last)) {
127 return ERR_INVAL;
128 }
129
130 if ((info->flash_id & FLASH_VENDMASK) !=
131 (INTEL_MANUFACT & FLASH_VENDMASK)) {
132 return ERR_UNKNOWN_FLASH_VENDOR;
133 }
134
135 prot = 0;
136 for (sect = s_first; sect <= s_last; ++sect) {
137 if (info->protect[sect]) {
138 prot++;
139 }
140 }
141 if (prot)
142 return ERR_PROTECTED;
143
144 /*
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.
150 */
151 flag = disable_interrupts ();
152
153 /* Start erase on unprotected sectors */
154 for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
155
156 printf ("Erasing sector %2d ... ", sect);
157
158 /* arm simple, non interrupt dependent timer */
159 reset_timer_masked ();
160
161 if (info->protect[sect] == 0) { /* not protected */
162 vu_short *addr = (vu_short *) (info->start[sect]);
163
164 *addr = 0x20; /* erase setup */
165 *addr = 0xD0; /* erase confirm */
166
167 while ((*addr & 0x80) != 0x80) {
6d0f6bcf 168 if (get_timer_masked () > CONFIG_SYS_FLASH_ERASE_TOUT) {
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169 *addr = 0xB0; /* suspend erase */
170 *addr = 0xFF; /* reset to read mode */
171 rc = ERR_TIMOUT;
172 goto outahere;
173 }
174 }
175
176 /* clear status register command */
177 *addr = 0x50;
178 /* reset to read mode */
179 *addr = 0xFF;
180 }
181 printf ("ok.\n");
182 }
183 if (ctrlc ())
184 printf ("User Interrupt!\n");
185
186 outahere:
187
188 /* allow flash to settle - wait 10 ms */
189 udelay_masked (10000);
190
191 if (flag)
192 enable_interrupts ();
193
194 return rc;
195}
196
197/*-----------------------------------------------------------------------
198 * Copy memory to flash
199 */
200
201static int write_word (flash_info_t * info, ulong dest, ushort data)
202{
203 vu_short *addr = (vu_short *) dest, val;
204 int rc = ERR_OK;
205 int flag;
206
207 /* Check if Flash is (sufficiently) erased
208 */
209 if ((*addr & data) != data)
210 return ERR_NOT_ERASED;
211
212 /*
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.
218 */
219 flag = disable_interrupts ();
220
221 /* clear status register command */
222 *addr = 0x50;
223
224 /* program set-up command */
225 *addr = 0x40;
226
227 /* latch address/data */
228 *addr = data;
229
230 /* arm simple, non interrupt dependent timer */
231 reset_timer_masked ();
232
233 /* wait while polling the status register */
234 while (((val = *addr) & 0x80) != 0x80) {
6d0f6bcf 235 if (get_timer_masked () > CONFIG_SYS_FLASH_WRITE_TOUT) {
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236 rc = ERR_TIMOUT;
237 /* suspend program command */
238 *addr = 0xB0;
239 goto outahere;
240 }
241 }
242
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");
248 rc = ERR_PROG_ERROR;
249 goto outahere;
250 }
251 if (val & (1 << 1)) {
252 printf ("Device protect error.\n");
253 rc = ERR_PROTECTED;
254 goto outahere;
255 }
256 if (val & (1 << 4)) {
257 printf ("Programming error.\n");
258 rc = ERR_PROG_ERROR;
259 goto outahere;
260 }
261 rc = ERR_PROG_ERROR;
262 goto outahere;
263 }
264
265 outahere:
266 /* read array command */
267 *addr = 0xFF;
268
269 if (flag)
270 enable_interrupts ();
271
272 return rc;
273}
274
275/*-----------------------------------------------------------------------
276 * Copy memory to flash.
277 */
278
279int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
280{
281 ulong cp, wp;
282 ushort data;
283 int l;
284 int i, rc;
285
286 wp = (addr & ~1); /* get lower word aligned address */
287
288 /*
289 * handle unaligned start bytes
290 */
291 if ((l = addr - wp) != 0) {
292 data = 0;
293 for (i = 0, cp = wp; i < l; ++i, ++cp) {
294 data = (data >> 8) | (*(uchar *) cp << 8);
295 }
296 for (; i < 2 && cnt > 0; ++i) {
297 data = (data >> 8) | (*src++ << 8);
298 --cnt;
299 ++cp;
300 }
301 for (; cnt == 0 && i < 2; ++i, ++cp) {
302 data = (data >> 8) | (*(uchar *) cp << 8);
303 }
304
305 if ((rc = write_word (info, wp, data)) != 0) {
306 return (rc);
307 }
308 wp += 2;
309 }
310
311 /*
312 * handle word aligned part
313 */
314 while (cnt >= 2) {
315 data = *((vu_short *) src);
316 if ((rc = write_word (info, wp, data)) != 0) {
317 return (rc);
318 }
319 src += 2;
320 wp += 2;
321 cnt -= 2;
322 }
323
324 if (cnt == 0) {
325 return ERR_OK;
326 }
327
328 /*
329 * handle unaligned tail bytes
330 */
331 data = 0;
332 for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) {
333 data = (data >> 8) | (*src++ << 8);
334 --cnt;
335 }
336 for (; i < 2; ++i, ++cp) {
337 data = (data >> 8) | (*(uchar *) cp << 8);
338 }
339
340 return write_word (info, wp, data);
341}