diff options
Diffstat (limited to 'bootloader/main-pp.c')
-rw-r--r-- | bootloader/main-pp.c | 274 |
1 files changed, 17 insertions, 257 deletions
diff --git a/bootloader/main-pp.c b/bootloader/main-pp.c index 72d45712fc..b03a5a75c6 100644 --- a/bootloader/main-pp.c +++ b/bootloader/main-pp.c | |||
@@ -37,6 +37,8 @@ | |||
37 | #include "button.h" | 37 | #include "button.h" |
38 | #include "disk.h" | 38 | #include "disk.h" |
39 | #include "crc32-mi4.h" | 39 | #include "crc32-mi4.h" |
40 | #include "mi4-loader.h" | ||
41 | #include "loader_strerror.h" | ||
40 | #include <string.h> | 42 | #include <string.h> |
41 | #include "power.h" | 43 | #include "power.h" |
42 | #include "version.h" | 44 | #include "version.h" |
@@ -110,21 +112,6 @@ unsigned char *loadbuffer = (unsigned char *)DRAM_START; | |||
110 | 112 | ||
111 | #define MI4_HEADER_SIZE 0x200 | 113 | #define MI4_HEADER_SIZE 0x200 |
112 | 114 | ||
113 | /* mi4 header structure */ | ||
114 | struct mi4header_t { | ||
115 | unsigned char magic[4]; | ||
116 | uint32_t version; | ||
117 | uint32_t length; | ||
118 | uint32_t crc32; | ||
119 | uint32_t enctype; | ||
120 | uint32_t mi4size; | ||
121 | uint32_t plaintext; | ||
122 | uint32_t dsa_key[10]; | ||
123 | uint32_t pad[109]; | ||
124 | unsigned char type[4]; | ||
125 | unsigned char model[4]; | ||
126 | }; | ||
127 | |||
128 | /* PPMI header structure */ | 115 | /* PPMI header structure */ |
129 | struct ppmi_header_t { | 116 | struct ppmi_header_t { |
130 | unsigned char magic[4]; | 117 | unsigned char magic[4]; |
@@ -132,236 +119,6 @@ struct ppmi_header_t { | |||
132 | uint32_t pad[126]; | 119 | uint32_t pad[126]; |
133 | }; | 120 | }; |
134 | 121 | ||
135 | inline unsigned int le2int(unsigned char* buf) | ||
136 | { | ||
137 | int32_t res = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; | ||
138 | |||
139 | return res; | ||
140 | } | ||
141 | |||
142 | inline void int2le(unsigned int val, unsigned char* addr) | ||
143 | { | ||
144 | addr[0] = val & 0xFF; | ||
145 | addr[1] = (val >> 8) & 0xff; | ||
146 | addr[2] = (val >> 16) & 0xff; | ||
147 | addr[3] = (val >> 24) & 0xff; | ||
148 | } | ||
149 | |||
150 | struct tea_key { | ||
151 | const char * name; | ||
152 | uint32_t key[4]; | ||
153 | }; | ||
154 | |||
155 | #define NUM_KEYS (sizeof(tea_keytable)/sizeof(tea_keytable[0])) | ||
156 | struct tea_key tea_keytable[] = { | ||
157 | { "default" , { 0x20d36cc0, 0x10e8c07d, 0xc0e7dcaa, 0x107eb080 } }, | ||
158 | { "sansa", { 0xe494e96e, 0x3ee32966, 0x6f48512b, 0xa93fbb42 } }, | ||
159 | { "sansa_gh", { 0xd7b10538, 0xc662945b, 0x1b3fce68, 0xf389c0e6 } }, | ||
160 | { "sansa_103", { 0x1d29ddc0, 0x2579c2cd, 0xce339e1a, 0x75465dfe } }, | ||
161 | { "rhapsody", { 0x7aa9c8dc, 0xbed0a82a, 0x16204cc7, 0x5904ef38 } }, | ||
162 | { "p610", { 0x950e83dc, 0xec4907f9, 0x023734b9, 0x10cfb7c7 } }, | ||
163 | { "p640", { 0x220c5f23, 0xd04df68e, 0x431b5e25, 0x4dcc1fa1 } }, | ||
164 | { "virgin", { 0xe83c29a1, 0x04862973, 0xa9b3f0d4, 0x38be2a9c } }, | ||
165 | { "20gc_eng", { 0x0240772c, 0x6f3329b5, 0x3ec9a6c5, 0xb0c9e493 } }, | ||
166 | { "20gc_fre", { 0xbede8817, 0xb23bfe4f, 0x80aa682d, 0xd13f598c } }, | ||
167 | { "elio_p722", { 0x6af3b9f8, 0x777483f5, 0xae8181cc, 0xfa6d8a84 } }, | ||
168 | { "c200", { 0xbf2d06fa, 0xf0e23d59, 0x29738132, 0xe2d04ca7 } }, | ||
169 | { "c200_103", { 0x2a7968de, 0x15127979, 0x142e60a7, 0xe49c1893 } }, | ||
170 | { "c200_106", { 0xa913d139, 0xf842f398, 0x3e03f1a6, 0x060ee012 } }, | ||
171 | { "view", { 0x70e19bda, 0x0c69ea7d, 0x2b8b1ad1, 0xe9767ced } }, | ||
172 | { "sa9200", { 0x33ea0236, 0x9247bdc5, 0xdfaedf9f, 0xd67c9d30 } }, | ||
173 | { "hdd1630/hdd63x0", { 0x04543ced, 0xcebfdbad, 0xf7477872, 0x0d12342e } }, | ||
174 | { "vibe500", { 0xe3a66156, 0x77c6b67a, 0xe821dca5, 0xca8ca37c } }, | ||
175 | }; | ||
176 | |||
177 | /* | ||
178 | |||
179 | tea_decrypt() from http://en.wikipedia.org/wiki/Tiny_Encryption_Algorithm | ||
180 | |||
181 | "Following is an adaptation of the reference encryption and decryption | ||
182 | routines in C, released into the public domain by David Wheeler and | ||
183 | Roger Needham:" | ||
184 | |||
185 | */ | ||
186 | |||
187 | /* NOTE: The mi4 version of TEA uses a different initial value to sum compared | ||
188 | to the reference implementation and the main loop is 8 iterations, not | ||
189 | 32. | ||
190 | */ | ||
191 | |||
192 | static void tea_decrypt(uint32_t* v0, uint32_t* v1, uint32_t* k) { | ||
193 | uint32_t sum=0xF1BBCDC8, i; /* set up */ | ||
194 | uint32_t delta=0x9E3779B9; /* a key schedule constant */ | ||
195 | uint32_t k0=k[0], k1=k[1], k2=k[2], k3=k[3]; /* cache key */ | ||
196 | for(i=0; i<8; i++) { /* basic cycle start */ | ||
197 | *v1 -= ((*v0<<4) + k2) ^ (*v0 + sum) ^ ((*v0>>5) + k3); | ||
198 | *v0 -= ((*v1<<4) + k0) ^ (*v1 + sum) ^ ((*v1>>5) + k1); | ||
199 | sum -= delta; /* end cycle */ | ||
200 | } | ||
201 | } | ||
202 | |||
203 | /* mi4 files are encrypted in 64-bit blocks (two little-endian 32-bit | ||
204 | integers) and the key is incremented after each block | ||
205 | */ | ||
206 | |||
207 | static void tea_decrypt_buf(unsigned char* src, unsigned char* dest, size_t n, uint32_t * key) | ||
208 | { | ||
209 | uint32_t v0, v1; | ||
210 | unsigned int i; | ||
211 | |||
212 | for (i = 0; i < (n / 8); i++) { | ||
213 | v0 = le2int(src); | ||
214 | v1 = le2int(src+4); | ||
215 | |||
216 | tea_decrypt(&v0, &v1, key); | ||
217 | |||
218 | int2le(v0, dest); | ||
219 | int2le(v1, dest+4); | ||
220 | |||
221 | src += 8; | ||
222 | dest += 8; | ||
223 | |||
224 | /* Now increment the key */ | ||
225 | key[0]++; | ||
226 | if (key[0]==0) { | ||
227 | key[1]++; | ||
228 | if (key[1]==0) { | ||
229 | key[2]++; | ||
230 | if (key[2]==0) { | ||
231 | key[3]++; | ||
232 | } | ||
233 | } | ||
234 | } | ||
235 | } | ||
236 | } | ||
237 | |||
238 | static int tea_find_key(struct mi4header_t *mi4header, unsigned char* buf) | ||
239 | { | ||
240 | unsigned int i; | ||
241 | uint32_t key[4]; | ||
242 | uint32_t keyinc; | ||
243 | unsigned char magic_dec[8]; | ||
244 | int key_found = -1; | ||
245 | unsigned int magic_location = mi4header->length-4; | ||
246 | int unaligned = 0; | ||
247 | |||
248 | if ( (magic_location % 8) != 0 ) | ||
249 | { | ||
250 | unaligned = 1; | ||
251 | magic_location -= 4; | ||
252 | } | ||
253 | |||
254 | printf("Searching for key:"); | ||
255 | |||
256 | for (i=0; i < NUM_KEYS && (key_found<0) ; i++) { | ||
257 | key[0] = tea_keytable[i].key[0]; | ||
258 | key[1] = tea_keytable[i].key[1]; | ||
259 | key[2] = tea_keytable[i].key[2]; | ||
260 | key[3] = tea_keytable[i].key[3]; | ||
261 | |||
262 | /* Now increment the key */ | ||
263 | keyinc = (magic_location-mi4header->plaintext)/8; | ||
264 | if ((key[0]+keyinc) < key[0]) key[1]++; | ||
265 | key[0] += keyinc; | ||
266 | if (key[1]==0) key[2]++; | ||
267 | if (key[2]==0) key[3]++; | ||
268 | |||
269 | /* Decrypt putative magic */ | ||
270 | tea_decrypt_buf(&buf[magic_location], magic_dec, 8, key); | ||
271 | |||
272 | if (le2int(&magic_dec[4*unaligned]) == 0xaa55aa55) | ||
273 | { | ||
274 | key_found = i; | ||
275 | printf("%s...found", tea_keytable[i].name); | ||
276 | } else { | ||
277 | /* printf("%s...failed", tea_keytable[i].name); */ | ||
278 | } | ||
279 | } | ||
280 | |||
281 | return key_found; | ||
282 | } | ||
283 | |||
284 | |||
285 | /* Load mi4 format firmware image */ | ||
286 | int load_mi4(unsigned char* buf, char* firmware, unsigned int buffer_size) | ||
287 | { | ||
288 | int fd; | ||
289 | struct mi4header_t mi4header; | ||
290 | int rc; | ||
291 | unsigned long sum; | ||
292 | char filename[MAX_PATH]; | ||
293 | |||
294 | snprintf(filename,sizeof(filename), BOOTDIR "/%s",firmware); | ||
295 | fd = open(filename, O_RDONLY); | ||
296 | if(fd < 0) | ||
297 | { | ||
298 | snprintf(filename,sizeof(filename),"/%s",firmware); | ||
299 | fd = open(filename, O_RDONLY); | ||
300 | if(fd < 0) | ||
301 | return EFILE_NOT_FOUND; | ||
302 | } | ||
303 | |||
304 | read(fd, &mi4header, MI4_HEADER_SIZE); | ||
305 | |||
306 | /* MI4 file size */ | ||
307 | printf("mi4 size: %x", mi4header.mi4size); | ||
308 | |||
309 | if ((mi4header.mi4size-MI4_HEADER_SIZE) > buffer_size) | ||
310 | { | ||
311 | close(fd); | ||
312 | return EFILE_TOO_BIG; | ||
313 | } | ||
314 | |||
315 | /* CRC32 */ | ||
316 | printf("CRC32: %x", mi4header.crc32); | ||
317 | |||
318 | /* Rockbox model id */ | ||
319 | printf("Model id: %.4s", mi4header.model); | ||
320 | |||
321 | /* Read binary type (RBOS, RBBL) */ | ||
322 | printf("Binary type: %.4s", mi4header.type); | ||
323 | |||
324 | /* Load firmware file */ | ||
325 | lseek(fd, MI4_HEADER_SIZE, SEEK_SET); | ||
326 | rc = read(fd, buf, mi4header.mi4size-MI4_HEADER_SIZE); | ||
327 | close(fd); | ||
328 | if(rc < (int)mi4header.mi4size-MI4_HEADER_SIZE) | ||
329 | return EREAD_IMAGE_FAILED; | ||
330 | |||
331 | /* Check CRC32 to see if we have a valid file */ | ||
332 | sum = chksum_crc32 (buf, mi4header.mi4size - MI4_HEADER_SIZE); | ||
333 | |||
334 | printf("Calculated CRC32: %x", sum); | ||
335 | |||
336 | if(sum != mi4header.crc32) | ||
337 | return EBAD_CHKSUM; | ||
338 | |||
339 | if( (mi4header.plaintext + MI4_HEADER_SIZE) != mi4header.mi4size) | ||
340 | { | ||
341 | /* Load encrypted firmware */ | ||
342 | int key_index = tea_find_key(&mi4header, buf); | ||
343 | |||
344 | if (key_index < 0) | ||
345 | return EINVALID_FORMAT; | ||
346 | |||
347 | /* Plaintext part is already loaded */ | ||
348 | buf += mi4header.plaintext; | ||
349 | |||
350 | /* Decrypt in-place */ | ||
351 | tea_decrypt_buf(buf, buf, | ||
352 | mi4header.mi4size-(mi4header.plaintext+MI4_HEADER_SIZE), | ||
353 | tea_keytable[key_index].key); | ||
354 | |||
355 | printf("%s key used", tea_keytable[key_index].name); | ||
356 | |||
357 | /* Check decryption was successfull */ | ||
358 | if(le2int(&buf[mi4header.length-mi4header.plaintext-4]) != 0xaa55aa55) | ||
359 | return EREAD_IMAGE_FAILED; | ||
360 | } | ||
361 | |||
362 | return EOK; | ||
363 | } | ||
364 | |||
365 | #if (CONFIG_STORAGE & STORAGE_SD) | 122 | #if (CONFIG_STORAGE & STORAGE_SD) |
366 | /* Load mi4 firmware from a hidden disk partition */ | 123 | /* Load mi4 firmware from a hidden disk partition */ |
367 | int load_mi4_part(unsigned char* buf, struct partinfo* pinfo, | 124 | int load_mi4_part(unsigned char* buf, struct partinfo* pinfo, |
@@ -432,7 +189,7 @@ int load_mi4_part(unsigned char* buf, struct partinfo* pinfo, | |||
432 | (void) disable_rebuild; | 189 | (void) disable_rebuild; |
433 | #endif | 190 | #endif |
434 | 191 | ||
435 | return EOK; | 192 | return mi4header.mi4size-MI4_HEADER_SIZE; |
436 | } | 193 | } |
437 | #endif /* (CONFIG_STORAGE & STORAGE_SD) */ | 194 | #endif /* (CONFIG_STORAGE & STORAGE_SD) */ |
438 | 195 | ||
@@ -528,6 +285,7 @@ static int handle_usb(int connect_timeout) | |||
528 | 285 | ||
529 | void* main(void) | 286 | void* main(void) |
530 | { | 287 | { |
288 | char filename[MAX_PATH]; | ||
531 | int i; | 289 | int i; |
532 | int btn; | 290 | int btn; |
533 | int rc; | 291 | int rc; |
@@ -642,13 +400,15 @@ void* main(void) | |||
642 | if((btn & BOOTLOADER_BOOT_OF) == 0) | 400 | if((btn & BOOTLOADER_BOOT_OF) == 0) |
643 | { | 401 | { |
644 | printf("Loading Rockbox..."); | 402 | printf("Loading Rockbox..."); |
645 | rc = load_mi4(loadbuffer, BOOTFILE, MAX_LOADSIZE); | 403 | snprintf(filename,sizeof(filename), BOOTDIR "/%s", BOOTFILE); |
646 | if (rc < EOK) | 404 | |
405 | rc = load_mi4(loadbuffer, filename, MAX_LOADSIZE); | ||
406 | if (rc <= EFILE_EMPTY) | ||
647 | { | 407 | { |
648 | bool old_verbose = verbose; | 408 | bool old_verbose = verbose; |
649 | verbose = true; | 409 | verbose = true; |
650 | printf("Can't load " BOOTFILE ": "); | 410 | printf("Can't load " BOOTFILE ": "); |
651 | printf(strerror(rc)); | 411 | printf(loader_strerror(rc)); |
652 | verbose = old_verbose; | 412 | verbose = old_verbose; |
653 | btn |= BOOTLOADER_BOOT_OF; | 413 | btn |= BOOTLOADER_BOOT_OF; |
654 | sleep(5*HZ); | 414 | sleep(5*HZ); |
@@ -676,9 +436,9 @@ void* main(void) | |||
676 | { | 436 | { |
677 | rc = load_mi4_part(loadbuffer, pinfo, MAX_LOADSIZE, | 437 | rc = load_mi4_part(loadbuffer, pinfo, MAX_LOADSIZE, |
678 | usb == USB_INSERTED); | 438 | usb == USB_INSERTED); |
679 | if (rc < EOK) { | 439 | if (rc <= EFILE_EMPTY) { |
680 | printf("Can't load from partition"); | 440 | printf("Can't load from partition"); |
681 | printf(strerror(rc)); | 441 | printf(loader_strerror(rc)); |
682 | } else { | 442 | } else { |
683 | goto main_exit; | 443 | goto main_exit; |
684 | } | 444 | } |
@@ -690,9 +450,9 @@ void* main(void) | |||
690 | #if defined(PHILIPS_HDD1630) || defined(PHILIPS_HDD6330) || defined(PHILIPS_SA9200) | 450 | #if defined(PHILIPS_HDD1630) || defined(PHILIPS_HDD6330) || defined(PHILIPS_SA9200) |
691 | printf("Trying /System/OF.ebn"); | 451 | printf("Trying /System/OF.ebn"); |
692 | rc=load_mi4(loadbuffer, "/System/OF.ebn", MAX_LOADSIZE); | 452 | rc=load_mi4(loadbuffer, "/System/OF.ebn", MAX_LOADSIZE); |
693 | if (rc < EOK) { | 453 | if (rc <= EFILE_EMPTY) { |
694 | printf("Can't load /System/OF.ebn"); | 454 | printf("Can't load /System/OF.ebn"); |
695 | printf(strerror(rc)); | 455 | printf(loader_strerror(rc)); |
696 | } else { | 456 | } else { |
697 | goto main_exit; | 457 | goto main_exit; |
698 | } | 458 | } |
@@ -700,9 +460,9 @@ void* main(void) | |||
700 | 460 | ||
701 | printf("Trying /System/OF.mi4"); | 461 | printf("Trying /System/OF.mi4"); |
702 | rc=load_mi4(loadbuffer, "/System/OF.mi4", MAX_LOADSIZE); | 462 | rc=load_mi4(loadbuffer, "/System/OF.mi4", MAX_LOADSIZE); |
703 | if (rc < EOK) { | 463 | if (rc <= EFILE_EMPTY) { |
704 | printf("Can't load /System/OF.mi4"); | 464 | printf("Can't load /System/OF.mi4"); |
705 | printf(strerror(rc)); | 465 | printf(loader_strerror(rc)); |
706 | } else { | 466 | } else { |
707 | #if defined(SAMSUNG_YH925) | 467 | #if defined(SAMSUNG_YH925) |
708 | lcd_reset(); | 468 | lcd_reset(); |
@@ -712,9 +472,9 @@ void* main(void) | |||
712 | 472 | ||
713 | printf("Trying /System/OF.bin"); | 473 | printf("Trying /System/OF.bin"); |
714 | rc=load_raw_firmware(loadbuffer, "/System/OF.bin", MAX_LOADSIZE); | 474 | rc=load_raw_firmware(loadbuffer, "/System/OF.bin", MAX_LOADSIZE); |
715 | if (rc < EOK) { | 475 | if (rc <= EFILE_EMPTY) { |
716 | printf("Can't load /System/OF.bin"); | 476 | printf("Can't load /System/OF.bin"); |
717 | printf(strerror(rc)); | 477 | printf(loader_strerror(rc)); |
718 | } else { | 478 | } else { |
719 | #if defined(SAMSUNG_YH925) | 479 | #if defined(SAMSUNG_YH925) |
720 | lcd_reset(); | 480 | lcd_reset(); |