]>
Commit | Line | Data |
---|---|---|
affae2bf WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net | |
4 | * | |
5 | * (C) Copyright 2001 | |
6 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
7 | * | |
1a459660 | 8 | * SPDX-License-Identifier: GPL-2.0+ |
affae2bf WD |
9 | */ |
10 | ||
11 | #include <common.h> | |
12 | #include <mpc8xx.h> | |
13 | ||
0107cf66 MF |
14 | DECLARE_GLOBAL_DATA_PTR; |
15 | ||
6d0f6bcf | 16 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
affae2bf WD |
17 | |
18 | /*----------------------------------------------------------------------- | |
19 | * Protection Flags: | |
20 | */ | |
21 | #define FLAG_PROTECT_SET 0x01 | |
22 | #define FLAG_PROTECT_CLEAR 0x02 | |
23 | ||
24 | /* Board support for 1 or 2 flash devices */ | |
25 | #undef FLASH_PORT_WIDTH32 | |
26 | #define FLASH_PORT_WIDTH16 | |
27 | ||
28 | #ifdef FLASH_PORT_WIDTH16 | |
29 | #define FLASH_PORT_WIDTH ushort | |
30 | #define FLASH_PORT_WIDTHV vu_short | |
31 | #else | |
32 | #define FLASH_PORT_WIDTH ulong | |
33 | #define FLASH_PORT_WIDTHV vu_long | |
34 | #endif | |
35 | ||
36 | #define FPW FLASH_PORT_WIDTH | |
37 | #define FPWV FLASH_PORT_WIDTHV | |
38 | ||
39 | /*----------------------------------------------------------------------- | |
40 | * Functions | |
41 | */ | |
42 | static ulong flash_get_size (FPW *addr, flash_info_t *info); | |
43 | static int write_data (flash_info_t *info, ulong dest, FPW data); | |
44 | static void flash_get_offsets (ulong base, flash_info_t *info); | |
45 | ||
46 | /*----------------------------------------------------------------------- | |
47 | */ | |
48 | ||
49 | unsigned long flash_init (void) | |
50 | { | |
6d0f6bcf | 51 | volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; |
affae2bf WD |
52 | volatile memctl8xx_t *memctl = &immap->im_memctl; |
53 | unsigned long size_b0; | |
54 | int i; | |
55 | ||
56 | /* Init: no FLASHes known */ | |
6d0f6bcf | 57 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
affae2bf WD |
58 | flash_info[i].flash_id = FLASH_UNKNOWN; |
59 | } | |
60 | ||
61 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
62 | size_b0 = flash_get_size((FPW *)FLASH_BASE0_PRELIM, &flash_info[0]); | |
63 | ||
64 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
65 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
66 | size_b0, size_b0<<20); | |
67 | } | |
68 | ||
69 | /* Remap FLASH according to real size */ | |
6d0f6bcf JCPV |
70 | memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); |
71 | memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V; | |
affae2bf WD |
72 | |
73 | /* Re-do sizing to get full correct info */ | |
6d0f6bcf | 74 | size_b0 = flash_get_size((FPW *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
affae2bf | 75 | |
6d0f6bcf | 76 | flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
affae2bf WD |
77 | |
78 | /* monitor protection ON by default */ | |
79 | (void)flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf JCPV |
80 | CONFIG_SYS_FLASH_BASE, |
81 | CONFIG_SYS_FLASH_BASE+monitor_flash_len-1, | |
affae2bf WD |
82 | &flash_info[0]); |
83 | ||
84 | flash_info[0].size = size_b0; | |
85 | ||
86 | return (size_b0); | |
87 | } | |
88 | ||
89 | /*----------------------------------------------------------------------- | |
90 | */ | |
91 | static void flash_get_offsets (ulong base, flash_info_t *info) | |
92 | { | |
93 | int i; | |
94 | ||
95 | if (info->flash_id == FLASH_UNKNOWN) { | |
96 | return; | |
97 | } | |
98 | ||
99 | if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { | |
100 | for (i = 0; i < info->sector_count; i++) { | |
101 | info->start[i] = base + (i * 0x00020000); | |
102 | } | |
103 | } | |
104 | } | |
105 | ||
106 | /*----------------------------------------------------------------------- | |
107 | */ | |
108 | void flash_print_info (flash_info_t *info) | |
109 | { | |
110 | int i; | |
111 | ||
112 | if (info->flash_id == FLASH_UNKNOWN) { | |
113 | printf ("missing or unknown FLASH type\n"); | |
114 | return; | |
115 | } | |
116 | ||
117 | switch (info->flash_id & FLASH_VENDMASK) { | |
118 | case FLASH_MAN_INTEL: printf ("INTEL "); break; | |
119 | default: printf ("Unknown Vendor "); break; | |
120 | } | |
121 | ||
122 | switch (info->flash_id & FLASH_TYPEMASK) { | |
123 | case FLASH_28F320J3A: | |
124 | printf ("28F320J3A\n"); break; | |
125 | case FLASH_28F640J3A: | |
126 | printf ("28F640J3A\n"); break; | |
127 | case FLASH_28F128J3A: | |
128 | printf ("28F128J3A\n"); break; | |
129 | default: printf ("Unknown Chip Type\n"); break; | |
130 | } | |
131 | ||
132 | printf (" Size: %ld MB in %d Sectors\n", | |
133 | info->size >> 20, info->sector_count); | |
134 | ||
135 | printf (" Sector Start Addresses:"); | |
136 | for (i=0; i<info->sector_count; ++i) { | |
137 | if ((i % 5) == 0) | |
138 | printf ("\n "); | |
139 | printf (" %08lX%s", | |
140 | info->start[i], | |
141 | info->protect[i] ? " (RO)" : " " | |
142 | ); | |
143 | } | |
144 | printf ("\n"); | |
145 | return; | |
146 | } | |
147 | ||
148 | /*----------------------------------------------------------------------- | |
149 | */ | |
150 | ||
151 | ||
152 | /*----------------------------------------------------------------------- | |
153 | */ | |
154 | ||
155 | /* | |
156 | * The following code cannot be run from FLASH! | |
157 | */ | |
158 | ||
159 | static ulong flash_get_size (FPW *addr, flash_info_t *info) | |
160 | { | |
161 | FPW value; | |
162 | ||
163 | /* Write auto select command: read Manufacturer ID */ | |
164 | addr[0x5555] = (FPW)0x00AA00AA; | |
165 | addr[0x2AAA] = (FPW)0x00550055; | |
166 | addr[0x5555] = (FPW)0x00900090; | |
167 | ||
168 | value = addr[0]; | |
169 | ||
170 | switch (value) { | |
171 | case (FPW)INTEL_MANUFACT: | |
172 | info->flash_id = FLASH_MAN_INTEL; | |
173 | break; | |
174 | default: | |
175 | info->flash_id = FLASH_UNKNOWN; | |
176 | info->sector_count = 0; | |
177 | info->size = 0; | |
178 | addr[0] = (FPW)0x00FF00FF; /* restore read mode */ | |
179 | return (0); /* no or unknown flash */ | |
180 | } | |
181 | ||
182 | value = addr[1]; /* device ID */ | |
183 | ||
184 | switch (value) { | |
185 | case (FPW)INTEL_ID_28F320J3A: | |
186 | info->flash_id += FLASH_28F320J3A; | |
187 | info->sector_count = 32; | |
188 | info->size = 0x00400000; | |
189 | break; /* => 4 MB */ | |
190 | ||
191 | case (FPW)INTEL_ID_28F640J3A: | |
192 | info->flash_id += FLASH_28F640J3A; | |
193 | info->sector_count = 64; | |
194 | info->size = 0x00800000; | |
195 | break; /* => 8 MB */ | |
196 | ||
197 | case (FPW)INTEL_ID_28F128J3A: | |
198 | info->flash_id += FLASH_28F128J3A; | |
199 | info->sector_count = 128; | |
200 | info->size = 0x01000000; | |
201 | break; /* => 16 MB */ | |
202 | ||
203 | default: | |
204 | info->flash_id = FLASH_UNKNOWN; | |
205 | break; | |
206 | } | |
207 | ||
6d0f6bcf | 208 | if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) { |
affae2bf | 209 | printf ("** ERROR: sector count %d > max (%d) **\n", |
6d0f6bcf JCPV |
210 | info->sector_count, CONFIG_SYS_MAX_FLASH_SECT); |
211 | info->sector_count = CONFIG_SYS_MAX_FLASH_SECT; | |
affae2bf WD |
212 | } |
213 | ||
214 | addr[0] = (FPW)0x00FF00FF; /* restore read mode */ | |
215 | ||
216 | return (info->size); | |
217 | } | |
218 | ||
219 | ||
220 | /*----------------------------------------------------------------------- | |
221 | */ | |
222 | ||
223 | int flash_erase (flash_info_t *info, int s_first, int s_last) | |
224 | { | |
225 | int flag, prot, sect; | |
226 | ulong type, start, now, last; | |
227 | int rcode = 0; | |
228 | ||
229 | if ((s_first < 0) || (s_first > s_last)) { | |
230 | if (info->flash_id == FLASH_UNKNOWN) { | |
231 | printf ("- missing\n"); | |
232 | } else { | |
233 | printf ("- no sectors to erase\n"); | |
234 | } | |
235 | return 1; | |
236 | } | |
237 | ||
238 | type = (info->flash_id & FLASH_VENDMASK); | |
239 | if ((type != FLASH_MAN_INTEL)) { | |
240 | printf ("Can't erase unknown flash type %08lx - aborted\n", | |
241 | info->flash_id); | |
242 | return 1; | |
243 | } | |
244 | ||
245 | prot = 0; | |
246 | for (sect=s_first; sect<=s_last; ++sect) { | |
247 | if (info->protect[sect]) { | |
248 | prot++; | |
249 | } | |
250 | } | |
251 | ||
252 | if (prot) { | |
253 | printf ("- Warning: %d protected sectors will not be erased!\n", | |
254 | prot); | |
255 | } else { | |
256 | printf ("\n"); | |
257 | } | |
258 | ||
259 | start = get_timer (0); | |
260 | last = start; | |
261 | /* Start erase on unprotected sectors */ | |
262 | for (sect = s_first; sect<=s_last; sect++) { | |
263 | if (info->protect[sect] == 0) { /* not protected */ | |
264 | FPWV *addr = (FPWV *)(info->start[sect]); | |
265 | FPW status; | |
266 | ||
267 | /* Disable interrupts which might cause a timeout here */ | |
268 | flag = disable_interrupts(); | |
269 | ||
270 | *addr = (FPW)0x00500050; /* clear status register */ | |
271 | *addr = (FPW)0x00200020; /* erase setup */ | |
272 | *addr = (FPW)0x00D000D0; /* erase confirm */ | |
273 | ||
274 | /* re-enable interrupts if necessary */ | |
275 | if (flag) | |
276 | enable_interrupts(); | |
277 | ||
278 | /* wait at least 80us - let's wait 1 ms */ | |
279 | udelay (1000); | |
280 | ||
281 | while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) { | |
6d0f6bcf | 282 | if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
affae2bf WD |
283 | printf ("Timeout\n"); |
284 | *addr = (FPW)0x00B000B0; /* suspend erase */ | |
285 | *addr = (FPW)0x00FF00FF; /* reset to read mode */ | |
286 | rcode = 1; | |
287 | break; | |
288 | } | |
289 | ||
290 | /* show that we're waiting */ | |
291 | if ((now - last) > 1000) { /* every second */ | |
292 | putc ('.'); | |
293 | last = now; | |
294 | } | |
295 | } | |
296 | ||
297 | *addr = (FPW)0x00FF00FF; /* reset to read mode */ | |
298 | printf (" done\n"); | |
299 | } | |
300 | } | |
301 | return rcode; | |
302 | } | |
303 | ||
304 | /*----------------------------------------------------------------------- | |
305 | * Copy memory to flash, returns: | |
306 | * 0 - OK | |
307 | * 1 - write timeout | |
308 | * 2 - Flash not erased | |
309 | * 4 - Flash not identified | |
310 | */ | |
311 | ||
312 | int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) | |
313 | { | |
314 | ulong cp, wp; | |
315 | FPW data; | |
316 | int count, i, l, rc, port_width; | |
317 | ||
318 | if (info->flash_id == FLASH_UNKNOWN) { | |
319 | return 4; | |
320 | } | |
321 | /* get lower word aligned address */ | |
322 | #ifdef FLASH_PORT_WIDTH16 | |
323 | wp = (addr & ~1); | |
324 | port_width = 2; | |
325 | #else | |
326 | wp = (addr & ~3); | |
327 | port_width = 4; | |
328 | #endif | |
329 | ||
330 | /* save sernum if needed */ | |
6d0f6bcf | 331 | if (addr >= CONFIG_SYS_FLASH_SN_SECTOR && addr < CONFIG_SYS_FLASH_SN_BASE) |
affae2bf | 332 | { |
6d0f6bcf | 333 | u_long dest = CONFIG_SYS_FLASH_SN_BASE; |
0107cf66 | 334 | u_short *sn = (u_short *)gd->bd->bi_sernum; |
affae2bf WD |
335 | |
336 | printf("(saving sernum)"); | |
337 | for (i=0; i<4; i++) | |
338 | { | |
339 | if ((rc = write_data(info, dest, sn[i])) != 0) { | |
340 | return (rc); | |
341 | } | |
342 | dest += port_width; | |
343 | } | |
344 | } | |
345 | ||
346 | /* | |
347 | * handle unaligned start bytes | |
348 | */ | |
349 | if ((l = addr - wp) != 0) { | |
350 | data = 0; | |
351 | for (i=0, cp=wp; i<l; ++i, ++cp) { | |
352 | data = (data << 8) | (*(uchar *)cp); | |
353 | } | |
354 | for (; i<port_width && cnt>0; ++i) { | |
355 | data = (data << 8) | *src++; | |
356 | --cnt; | |
357 | ++cp; | |
358 | } | |
359 | for (; cnt==0 && i<port_width; ++i, ++cp) { | |
360 | data = (data << 8) | (*(uchar *)cp); | |
361 | } | |
362 | ||
363 | if ((rc = write_data(info, wp, data)) != 0) { | |
364 | return (rc); | |
365 | } | |
366 | wp += port_width; | |
367 | } | |
368 | ||
369 | /* | |
370 | * handle word aligned part | |
371 | */ | |
372 | count = 0; | |
373 | while (cnt >= port_width) { | |
374 | data = 0; | |
375 | for (i=0; i<port_width; ++i) { | |
376 | data = (data << 8) | *src++; | |
377 | } | |
378 | if ((rc = write_data(info, wp, data)) != 0) { | |
379 | return (rc); | |
380 | } | |
381 | wp += port_width; | |
382 | cnt -= port_width; | |
383 | if (count++ > 0x800) | |
384 | { | |
385 | putc('.'); | |
386 | count = 0; | |
387 | } | |
388 | } | |
389 | ||
390 | if (cnt == 0) { | |
391 | return (0); | |
392 | } | |
393 | ||
394 | /* | |
395 | * handle unaligned tail bytes | |
396 | */ | |
397 | data = 0; | |
398 | for (i=0, cp=wp; i<port_width && cnt>0; ++i, ++cp) { | |
399 | data = (data << 8) | *src++; | |
400 | --cnt; | |
401 | } | |
402 | for (; i<port_width; ++i, ++cp) { | |
403 | data = (data << 8) | (*(uchar *)cp); | |
404 | } | |
405 | ||
406 | return (write_data(info, wp, data)); | |
407 | } | |
408 | ||
409 | /*----------------------------------------------------------------------- | |
410 | * Write a word or halfword to Flash, returns: | |
411 | * 0 - OK | |
412 | * 1 - write timeout | |
413 | * 2 - Flash not erased | |
414 | */ | |
415 | static int write_data (flash_info_t *info, ulong dest, FPW data) | |
416 | { | |
417 | FPWV *addr = (FPWV *)dest; | |
418 | ulong status; | |
419 | ulong start; | |
420 | int flag; | |
421 | ||
422 | /* Check if Flash is (sufficiently) erased */ | |
423 | if ((*addr & data) != data) { | |
424 | printf("not erased at %08lx (%x)\n",(ulong)addr,*addr); | |
425 | return (2); | |
426 | } | |
427 | /* Disable interrupts which might cause a timeout here */ | |
428 | flag = disable_interrupts(); | |
429 | ||
430 | *addr = (FPW)0x00400040; /* write setup */ | |
431 | *addr = data; | |
432 | ||
433 | /* re-enable interrupts if necessary */ | |
434 | if (flag) | |
435 | enable_interrupts(); | |
436 | ||
437 | start = get_timer (0); | |
438 | ||
439 | while (((status = *addr) & (FPW)0x00800080) != (FPW)0x00800080) { | |
6d0f6bcf | 440 | if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
affae2bf WD |
441 | *addr = (FPW)0x00FF00FF; /* restore read mode */ |
442 | return (1); | |
443 | } | |
444 | } | |
445 | ||
446 | *addr = (FPW)0x00FF00FF; /* restore read mode */ | |
447 | ||
448 | return (0); | |
449 | } |