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0621f6f9 SR |
1 | /* |
2 | * (C) Copyright 2003-2004 | |
3 | * Gary Jennejohn, DENX Software Engineering, gj@denx.de. | |
4 | * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com | |
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 | #include <command.h> | |
27 | #include <image.h> | |
28 | #include <asm/byteorder.h> | |
29 | #include <linux/mtd/nand.h> | |
30 | #include <fat.h> | |
31 | ||
32 | #include "auto_update.h" | |
33 | ||
34 | #ifdef CONFIG_AUTO_UPDATE | |
35 | ||
36 | #if !(CONFIG_COMMANDS & CFG_CMD_FAT) | |
37 | #error "must define CFG_CMD_FAT" | |
38 | #endif | |
39 | ||
40 | extern au_image_t au_image[]; | |
41 | extern int N_AU_IMAGES; | |
42 | ||
43 | #define AU_DEBUG | |
44 | #undef AU_DEBUG | |
45 | ||
46 | #undef debug | |
47 | #ifdef AU_DEBUG | |
48 | #define debug(fmt,args...) printf (fmt ,##args) | |
49 | #else | |
50 | #define debug(fmt,args...) | |
51 | #endif /* AU_DEBUG */ | |
52 | ||
53 | ||
54 | #define LOAD_ADDR ((unsigned char *)0x100000) /* where to load files into memory */ | |
55 | #define MAX_LOADSZ 0x1e00000 | |
56 | ||
57 | /* externals */ | |
58 | extern int fat_register_device(block_dev_desc_t *, int); | |
59 | extern int file_fat_detectfs(void); | |
60 | extern long file_fat_read(const char *, void *, unsigned long); | |
61 | long do_fat_read (const char *filename, void *buffer, unsigned long maxsize, int dols); | |
62 | #ifdef CONFIG_VFD | |
63 | extern int trab_vfd (ulong); | |
64 | extern int transfer_pic(unsigned char, unsigned char *, int, int); | |
65 | #endif | |
66 | extern int flash_sect_erase(ulong, ulong); | |
67 | extern int flash_sect_protect (int, ulong, ulong); | |
68 | extern int flash_write (uchar *, ulong, ulong); | |
69 | /* change char* to void* to shutup the compiler */ | |
70 | extern block_dev_desc_t *get_dev (char*, int); | |
71 | ||
72 | #if (CONFIG_COMMANDS & CFG_CMD_NAND) | |
73 | /* references to names in cmd_nand.c */ | |
74 | #define NANDRW_READ 0x01 | |
75 | #define NANDRW_WRITE 0x00 | |
76 | #define NANDRW_JFFS2 0x02 | |
77 | #define NANDRW_JFFS2_SKIP 0x04 | |
78 | extern struct nand_chip nand_dev_desc[]; | |
79 | extern int nand_rw(struct nand_chip* nand, int cmd, size_t start, size_t len, | |
80 | size_t * retlen, u_char * buf); | |
81 | extern int nand_erase(struct nand_chip* nand, size_t ofs, size_t len, int clean); | |
82 | #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */ | |
83 | ||
84 | extern block_dev_desc_t ide_dev_desc[CFG_IDE_MAXDEVICE]; | |
85 | ||
86 | ||
87 | int au_check_cksum_valid(int i, long nbytes) | |
88 | { | |
89 | image_header_t *hdr; | |
90 | unsigned long checksum; | |
91 | ||
92 | hdr = (image_header_t *)LOAD_ADDR; | |
93 | ||
94 | if ((au_image[i].type == AU_FIRMWARE) && (au_image[i].size != ntohl(hdr->ih_size))) { | |
95 | printf ("Image %s has wrong size\n", au_image[i].name); | |
96 | return -1; | |
97 | } | |
98 | ||
99 | if (nbytes != (sizeof(*hdr) + ntohl(hdr->ih_size))) { | |
100 | printf ("Image %s bad total SIZE\n", au_image[i].name); | |
101 | return -1; | |
102 | } | |
103 | /* check the data CRC */ | |
104 | checksum = ntohl(hdr->ih_dcrc); | |
105 | ||
77ddac94 | 106 | if (crc32 (0, (uchar *)(LOAD_ADDR + sizeof(*hdr)), ntohl(hdr->ih_size)) |
0621f6f9 SR |
107 | != checksum) { |
108 | printf ("Image %s bad data checksum\n", au_image[i].name); | |
109 | return -1; | |
110 | } | |
111 | return 0; | |
112 | } | |
113 | ||
114 | ||
115 | int au_check_header_valid(int i, long nbytes) | |
116 | { | |
117 | image_header_t *hdr; | |
118 | unsigned long checksum; | |
119 | ||
120 | hdr = (image_header_t *)LOAD_ADDR; | |
121 | /* check the easy ones first */ | |
122 | #undef CHECK_VALID_DEBUG | |
123 | #ifdef CHECK_VALID_DEBUG | |
124 | printf("magic %#x %#x ", ntohl(hdr->ih_magic), IH_MAGIC); | |
125 | printf("arch %#x %#x ", hdr->ih_arch, IH_CPU_PPC); | |
126 | printf("size %#x %#lx ", ntohl(hdr->ih_size), nbytes); | |
127 | printf("type %#x %#x ", hdr->ih_type, IH_TYPE_KERNEL); | |
128 | #endif | |
129 | if (nbytes < sizeof(*hdr)) | |
130 | { | |
131 | printf ("Image %s bad header SIZE\n", au_image[i].name); | |
132 | return -1; | |
133 | } | |
134 | if (ntohl(hdr->ih_magic) != IH_MAGIC || hdr->ih_arch != IH_CPU_PPC) | |
135 | { | |
136 | printf ("Image %s bad MAGIC or ARCH\n", au_image[i].name); | |
137 | return -1; | |
138 | } | |
139 | /* check the hdr CRC */ | |
140 | checksum = ntohl(hdr->ih_hcrc); | |
141 | hdr->ih_hcrc = 0; | |
142 | ||
77ddac94 | 143 | if (crc32 (0, (uchar *)hdr, sizeof(*hdr)) != checksum) { |
0621f6f9 SR |
144 | printf ("Image %s bad header checksum\n", au_image[i].name); |
145 | return -1; | |
146 | } | |
147 | hdr->ih_hcrc = htonl(checksum); | |
148 | ||
149 | /* check the type - could do this all in one gigantic if() */ | |
150 | if ((au_image[i].type == AU_FIRMWARE) && (hdr->ih_type != IH_TYPE_FIRMWARE)) { | |
151 | printf ("Image %s wrong type\n", au_image[i].name); | |
152 | return -1; | |
153 | } | |
154 | if ((au_image[i].type == AU_SCRIPT) && (hdr->ih_type != IH_TYPE_SCRIPT)) { | |
155 | printf ("Image %s wrong type\n", au_image[i].name); | |
156 | return -1; | |
157 | } | |
158 | ||
159 | /* recycle checksum */ | |
160 | checksum = ntohl(hdr->ih_size); | |
161 | ||
162 | #if 0 /* test-only */ | |
163 | /* for kernel and app the image header must also fit into flash */ | |
164 | if (idx != IDX_DISK) | |
165 | checksum += sizeof(*hdr); | |
166 | /* check the size does not exceed space in flash. HUSH scripts */ | |
167 | /* all have ausize[] set to 0 */ | |
168 | if ((ausize[idx] != 0) && (ausize[idx] < checksum)) { | |
169 | printf ("Image %s is bigger than FLASH\n", au_image[i].name); | |
170 | return -1; | |
171 | } | |
172 | #endif | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | ||
178 | int au_do_update(int i, long sz) | |
179 | { | |
180 | image_header_t *hdr; | |
181 | char *addr; | |
182 | long start, end; | |
183 | int off, rc; | |
184 | uint nbytes; | |
185 | int k; | |
186 | #if (CONFIG_COMMANDS & CFG_CMD_NAND) | |
187 | int total; | |
188 | #endif | |
189 | ||
190 | hdr = (image_header_t *)LOAD_ADDR; | |
191 | ||
192 | switch (au_image[i].type) { | |
193 | case AU_SCRIPT: | |
194 | printf("Executing script %s\n", au_image[i].name); | |
195 | ||
196 | /* execute a script */ | |
197 | if (hdr->ih_type == IH_TYPE_SCRIPT) { | |
198 | addr = (char *)((char *)hdr + sizeof(*hdr)); | |
199 | /* stick a NULL at the end of the script, otherwise */ | |
200 | /* parse_string_outer() runs off the end. */ | |
201 | addr[ntohl(hdr->ih_size)] = 0; | |
202 | addr += 8; | |
203 | ||
204 | /* | |
205 | * Replace cr/lf with ; | |
206 | */ | |
207 | k = 0; | |
208 | while (addr[k] != 0) { | |
209 | if ((addr[k] == 10) || (addr[k] == 13)) { | |
210 | addr[k] = ';'; | |
211 | } | |
212 | k++; | |
213 | } | |
214 | ||
215 | run_command(addr, 0); | |
216 | return 0; | |
217 | } | |
218 | ||
219 | break; | |
220 | ||
221 | case AU_FIRMWARE: | |
222 | case AU_NOR: | |
223 | case AU_NAND: | |
224 | start = au_image[i].start; | |
225 | end = au_image[i].start + au_image[i].size - 1; | |
226 | ||
acdcd10c SR |
227 | /* |
228 | * do not update firmware when image is already in flash. | |
229 | */ | |
230 | if (au_image[i].type == AU_FIRMWARE) { | |
231 | char *orig = (char*)start; | |
232 | char *new = (char *)((char *)hdr + sizeof(*hdr)); | |
233 | nbytes = ntohl(hdr->ih_size); | |
234 | ||
235 | while(--nbytes) { | |
236 | if (*orig++ != *new++) { | |
237 | break; | |
238 | } | |
239 | } | |
240 | if (!nbytes) { | |
241 | printf("Skipping firmware update - images are identical\n"); | |
242 | break; | |
243 | } | |
244 | } | |
245 | ||
0621f6f9 SR |
246 | /* unprotect the address range */ |
247 | /* this assumes that ONLY the firmware is protected! */ | |
248 | if (au_image[i].type == AU_FIRMWARE) { | |
249 | flash_sect_protect(0, start, end); | |
250 | } | |
251 | ||
252 | /* | |
253 | * erase the address range. | |
254 | */ | |
255 | if (au_image[i].type != AU_NAND) { | |
256 | printf("Updating NOR FLASH with image %s\n", au_image[i].name); | |
257 | debug ("flash_sect_erase(%lx, %lx);\n", start, end); | |
258 | flash_sect_erase(start, end); | |
259 | } else { | |
260 | #if (CONFIG_COMMANDS & CFG_CMD_NAND) | |
261 | printf("Updating NAND FLASH with image %s\n", au_image[i].name); | |
262 | debug ("nand_erase(%lx, %lx);\n", start, end); | |
263 | rc = nand_erase (nand_dev_desc, start, end - start + 1, 0); | |
264 | debug ("nand_erase returned %x\n", rc); | |
265 | #endif | |
266 | } | |
267 | ||
268 | udelay(10000); | |
269 | ||
270 | /* strip the header - except for the kernel and ramdisk */ | |
271 | if (au_image[i].type != AU_FIRMWARE) { | |
272 | addr = (char *)hdr; | |
273 | off = sizeof(*hdr); | |
274 | nbytes = sizeof(*hdr) + ntohl(hdr->ih_size); | |
275 | } else { | |
276 | addr = (char *)((char *)hdr + sizeof(*hdr)); | |
277 | off = 0; | |
278 | nbytes = ntohl(hdr->ih_size); | |
279 | } | |
280 | ||
281 | /* | |
282 | * copy the data from RAM to FLASH | |
283 | */ | |
284 | if (au_image[i].type != AU_NAND) { | |
285 | debug ("flash_write(%p, %lx %x)\n", addr, start, nbytes); | |
77ddac94 | 286 | rc = flash_write((uchar *)addr, start, nbytes); |
0621f6f9 SR |
287 | } else { |
288 | #if (CONFIG_COMMANDS & CFG_CMD_NAND) | |
289 | debug ("nand_rw(%p, %lx %x)\n", addr, start, nbytes); | |
290 | rc = nand_rw(nand_dev_desc, NANDRW_WRITE | NANDRW_JFFS2, | |
77ddac94 | 291 | start, nbytes, (size_t *)&total, (uchar *)addr); |
0621f6f9 SR |
292 | debug ("nand_rw: ret=%x total=%d nbytes=%d\n", rc, total, nbytes); |
293 | #endif | |
294 | } | |
295 | if (rc != 0) { | |
296 | printf("Flashing failed due to error %d\n", rc); | |
297 | return -1; | |
298 | } | |
299 | ||
300 | /* | |
301 | * check the dcrc of the copy | |
302 | */ | |
303 | if (au_image[i].type != AU_NAND) { | |
77ddac94 | 304 | rc = crc32 (0, (uchar *)(start + off), ntohl(hdr->ih_size)); |
0621f6f9 SR |
305 | } else { |
306 | #if (CONFIG_COMMANDS & CFG_CMD_NAND) | |
307 | rc = nand_rw(nand_dev_desc, NANDRW_READ | NANDRW_JFFS2 | NANDRW_JFFS2_SKIP, | |
77ddac94 WD |
308 | start, nbytes, (size_t *)&total, (uchar *)addr); |
309 | rc = crc32 (0, (uchar *)(addr + off), ntohl(hdr->ih_size)); | |
0621f6f9 SR |
310 | #endif |
311 | } | |
312 | if (rc != ntohl(hdr->ih_dcrc)) { | |
313 | printf ("Image %s Bad Data Checksum After COPY\n", au_image[i].name); | |
314 | return -1; | |
315 | } | |
316 | ||
317 | /* protect the address range */ | |
318 | /* this assumes that ONLY the firmware is protected! */ | |
319 | if (au_image[i].type == AU_FIRMWARE) { | |
320 | flash_sect_protect(1, start, end); | |
321 | } | |
322 | ||
323 | break; | |
324 | ||
325 | default: | |
326 | printf("Wrong image type selected!\n"); | |
327 | } | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
332 | ||
333 | static void process_macros (const char *input, char *output) | |
334 | { | |
335 | char c, prev; | |
336 | const char *varname_start = NULL; | |
337 | int inputcnt = strlen (input); | |
338 | int outputcnt = CFG_CBSIZE; | |
339 | int state = 0; /* 0 = waiting for '$' */ | |
340 | /* 1 = waiting for '(' or '{' */ | |
341 | /* 2 = waiting for ')' or '}' */ | |
342 | /* 3 = waiting for ''' */ | |
343 | #ifdef DEBUG_PARSER | |
344 | char *output_start = output; | |
345 | ||
346 | printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen(input), input); | |
347 | #endif | |
348 | ||
349 | prev = '\0'; /* previous character */ | |
350 | ||
351 | while (inputcnt && outputcnt) { | |
352 | c = *input++; | |
353 | inputcnt--; | |
354 | ||
355 | if (state!=3) { | |
356 | /* remove one level of escape characters */ | |
357 | if ((c == '\\') && (prev != '\\')) { | |
358 | if (inputcnt-- == 0) | |
359 | break; | |
360 | prev = c; | |
361 | c = *input++; | |
362 | } | |
363 | } | |
364 | ||
365 | switch (state) { | |
366 | case 0: /* Waiting for (unescaped) $ */ | |
367 | if ((c == '\'') && (prev != '\\')) { | |
368 | state = 3; | |
369 | break; | |
370 | } | |
371 | if ((c == '$') && (prev != '\\')) { | |
372 | state++; | |
373 | } else { | |
374 | *(output++) = c; | |
375 | outputcnt--; | |
376 | } | |
377 | break; | |
378 | case 1: /* Waiting for ( */ | |
379 | if (c == '(' || c == '{') { | |
380 | state++; | |
381 | varname_start = input; | |
382 | } else { | |
383 | state = 0; | |
384 | *(output++) = '$'; | |
385 | outputcnt--; | |
386 | ||
387 | if (outputcnt) { | |
388 | *(output++) = c; | |
389 | outputcnt--; | |
390 | } | |
391 | } | |
392 | break; | |
393 | case 2: /* Waiting for ) */ | |
394 | if (c == ')' || c == '}') { | |
395 | int i; | |
396 | char envname[CFG_CBSIZE], *envval; | |
397 | int envcnt = input-varname_start-1; /* Varname # of chars */ | |
398 | ||
399 | /* Get the varname */ | |
400 | for (i = 0; i < envcnt; i++) { | |
401 | envname[i] = varname_start[i]; | |
402 | } | |
403 | envname[i] = 0; | |
404 | ||
405 | /* Get its value */ | |
406 | envval = getenv (envname); | |
407 | ||
408 | /* Copy into the line if it exists */ | |
409 | if (envval != NULL) | |
410 | while ((*envval) && outputcnt) { | |
411 | *(output++) = *(envval++); | |
412 | outputcnt--; | |
413 | } | |
414 | /* Look for another '$' */ | |
415 | state = 0; | |
416 | } | |
417 | break; | |
418 | case 3: /* Waiting for ' */ | |
419 | if ((c == '\'') && (prev != '\\')) { | |
420 | state = 0; | |
421 | } else { | |
422 | *(output++) = c; | |
423 | outputcnt--; | |
424 | } | |
425 | break; | |
426 | } | |
427 | prev = c; | |
428 | } | |
429 | ||
430 | if (outputcnt) | |
431 | *output = 0; | |
432 | ||
433 | #ifdef DEBUG_PARSER | |
434 | printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", | |
435 | strlen(output_start), output_start); | |
436 | #endif | |
437 | } | |
438 | ||
439 | ||
440 | /* | |
441 | * this is called from board_init() after the hardware has been set up | |
442 | * and is usable. That seems like a good time to do this. | |
443 | * Right now the return value is ignored. | |
444 | */ | |
445 | int do_auto_update(void) | |
446 | { | |
447 | block_dev_desc_t *stor_dev; | |
448 | long sz; | |
449 | int i, res, cnt, old_ctrlc, got_ctrlc; | |
450 | char buffer[32]; | |
451 | char str[80]; | |
452 | ||
453 | /* | |
454 | * Check whether a CompactFlash is inserted | |
455 | */ | |
456 | if (ide_dev_desc[0].type == DEV_TYPE_UNKNOWN) { | |
457 | return -1; /* no disk detected! */ | |
458 | } | |
459 | ||
460 | /* check whether it has a partition table */ | |
461 | stor_dev = get_dev("ide", 0); | |
462 | if (stor_dev == NULL) { | |
463 | debug ("Uknown device type\n"); | |
464 | return -1; | |
465 | } | |
466 | if (fat_register_device(stor_dev, 1) != 0) { | |
467 | debug ("Unable to register ide disk 0:1 for fatls\n"); | |
468 | return -1; | |
469 | } | |
470 | ||
471 | /* | |
472 | * Check if magic file is present | |
473 | */ | |
474 | if (do_fat_read(AU_MAGIC_FILE, buffer, sizeof(buffer), LS_NO) <= 0) { | |
475 | return -1; | |
476 | } | |
477 | ||
478 | #ifdef CONFIG_AUTO_UPDATE_SHOW | |
479 | board_auto_update_show(1); | |
480 | #endif | |
481 | puts("\nAutoUpdate Disk detected! Trying to update system...\n"); | |
482 | ||
483 | /* make sure that we see CTRL-C and save the old state */ | |
484 | old_ctrlc = disable_ctrlc(0); | |
485 | ||
486 | /* just loop thru all the possible files */ | |
487 | for (i = 0; i < N_AU_IMAGES; i++) { | |
488 | /* | |
489 | * Try to expand the environment var in the fname | |
490 | */ | |
491 | process_macros(au_image[i].name, str); | |
492 | strcpy(au_image[i].name, str); | |
493 | ||
494 | printf("Reading %s ...", au_image[i].name); | |
495 | /* just read the header */ | |
496 | sz = do_fat_read(au_image[i].name, LOAD_ADDR, sizeof(image_header_t), LS_NO); | |
497 | debug ("read %s sz %ld hdr %d\n", | |
498 | au_image[i].name, sz, sizeof(image_header_t)); | |
499 | if (sz <= 0 || sz < sizeof(image_header_t)) { | |
500 | puts(" not found\n"); | |
501 | continue; | |
502 | } | |
503 | if (au_check_header_valid(i, sz) < 0) { | |
504 | puts(" header not valid\n"); | |
505 | continue; | |
506 | } | |
507 | sz = do_fat_read(au_image[i].name, LOAD_ADDR, MAX_LOADSZ, LS_NO); | |
508 | debug ("read %s sz %ld hdr %d\n", | |
509 | au_image[i].name, sz, sizeof(image_header_t)); | |
510 | if (sz <= 0 || sz <= sizeof(image_header_t)) { | |
511 | puts(" not found\n"); | |
512 | continue; | |
513 | } | |
514 | if (au_check_cksum_valid(i, sz) < 0) { | |
515 | puts(" checksum not valid\n"); | |
516 | continue; | |
517 | } | |
518 | puts(" done\n"); | |
519 | ||
520 | do { | |
521 | res = au_do_update(i, sz); | |
522 | /* let the user break out of the loop */ | |
523 | if (ctrlc() || had_ctrlc()) { | |
524 | clear_ctrlc(); | |
525 | if (res < 0) | |
526 | got_ctrlc = 1; | |
527 | break; | |
528 | } | |
529 | cnt++; | |
530 | } while (res < 0); | |
531 | } | |
532 | ||
533 | /* restore the old state */ | |
534 | disable_ctrlc(old_ctrlc); | |
535 | ||
536 | puts("AutoUpdate finished\n\n"); | |
537 | #ifdef CONFIG_AUTO_UPDATE_SHOW | |
538 | board_auto_update_show(0); | |
539 | #endif | |
540 | ||
541 | return 0; | |
542 | } | |
543 | ||
544 | ||
545 | int auto_update(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
546 | { | |
547 | do_auto_update(); | |
548 | ||
549 | return 0; | |
550 | } | |
551 | U_BOOT_CMD( | |
552 | autoupd, 1, 1, auto_update, | |
553 | "autoupd - Automatically update images\n", | |
554 | NULL | |
555 | ); | |
556 | #endif /* CONFIG_AUTO_UPDATE */ |