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c609719b WD |
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 | 30 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; |
c609719b WD |
31 | |
32 | ||
33 | /*----------------------------------------------------------------------- | |
34 | */ | |
35 | ||
36 | ulong 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++) { |
c609719b WD |
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; | |
6d0f6bcf JCPV |
48 | flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT; |
49 | memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT); | |
c609719b WD |
50 | if (i == 0) |
51 | flashbase = PHYS_FLASH_1; | |
52 | else | |
5f535fe1 | 53 | panic ("configured too many flash banks!\n"); |
c609719b WD |
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, | |
6d0f6bcf JCPV |
63 | CONFIG_SYS_FLASH_BASE, |
64 | CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, | |
c609719b WD |
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]); | |
c609719b WD |
70 | |
71 | return size; | |
72 | } | |
73 | ||
74 | /*----------------------------------------------------------------------- | |
75 | */ | |
76 | void 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 | 112 | Done: ; |
c609719b WD |
113 | } |
114 | ||
115 | /*----------------------------------------------------------------------- | |
116 | */ | |
117 | ||
118 | int 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) { |
c609719b WD |
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 | ||
201 | static 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) { |
c609719b WD |
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 | ||
279 | int 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 | } |