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b9944a77 DE |
1 | /* |
2 | * (C) Copyright 2013 | |
3 | * Reinhard Pfau, Guntermann & Drunck GmbH, reinhard.pfau@gdsys.cc | |
4 | * | |
5b8031cc | 5 | * SPDX-License-Identifier: GPL-2.0+ |
b9944a77 DE |
6 | */ |
7 | ||
8 | /* TODO: some more #ifdef's to avoid unneeded code for stage 1 / stage 2 */ | |
9 | ||
10 | #ifdef CCDM_ID_DEBUG | |
11 | #define DEBUG | |
12 | #endif | |
13 | ||
14 | #include <common.h> | |
15 | #include <malloc.h> | |
16 | #include <fs.h> | |
17 | #include <i2c.h> | |
18 | #include <mmc.h> | |
19 | #include <tpm.h> | |
2b9912e6 | 20 | #include <u-boot/sha1.h> |
b9944a77 DE |
21 | #include <asm/byteorder.h> |
22 | #include <asm/unaligned.h> | |
23 | #include <pca9698.h> | |
24 | ||
25 | #undef CCDM_FIRST_STAGE | |
26 | #undef CCDM_SECOND_STAGE | |
27 | #undef CCDM_AUTO_FIRST_STAGE | |
28 | ||
29 | #ifdef CONFIG_DEVELOP | |
30 | #define CCDM_DEVELOP | |
31 | #endif | |
32 | ||
33 | #ifdef CONFIG_TRAILBLAZER | |
34 | #define CCDM_FIRST_STAGE | |
35 | #undef CCDM_SECOND_STAGE | |
36 | #else | |
37 | #undef CCDM_FIRST_STAGE | |
38 | #define CCDM_SECOND_STAGE | |
39 | #endif | |
40 | ||
41 | #if defined(CCDM_DEVELOP) && defined(CCDM_SECOND_STAGE) && \ | |
42 | !defined(CCCM_FIRST_STAGE) | |
43 | #define CCDM_AUTO_FIRST_STAGE | |
44 | #endif | |
45 | ||
b9944a77 DE |
46 | /* CCDM specific contants */ |
47 | enum { | |
48 | /* NV indices */ | |
49 | NV_COMMON_DATA_INDEX = 0x40000001, | |
50 | /* magics for key blob chains */ | |
51 | MAGIC_KEY_PROGRAM = 0x68726500, | |
52 | MAGIC_HMAC = 0x68616300, | |
53 | MAGIC_END_OF_CHAIN = 0x00000000, | |
54 | /* sizes */ | |
55 | NV_COMMON_DATA_MIN_SIZE = 3 * sizeof(uint64_t) + 2 * sizeof(uint16_t), | |
56 | }; | |
57 | ||
58 | /* other constants */ | |
59 | enum { | |
60 | ESDHC_BOOT_IMAGE_SIG_OFS = 0x40, | |
61 | ESDHC_BOOT_IMAGE_SIZE_OFS = 0x48, | |
62 | ESDHC_BOOT_IMAGE_ADDR_OFS = 0x50, | |
63 | ESDHC_BOOT_IMAGE_TARGET_OFS = 0x58, | |
64 | ESDHC_BOOT_IMAGE_ENTRY_OFS = 0x60, | |
65 | }; | |
66 | ||
35ecf752 DE |
67 | enum { |
68 | I2C_SOC_0 = 0, | |
69 | I2C_SOC_1 = 1, | |
70 | }; | |
71 | ||
b9944a77 DE |
72 | struct key_program { |
73 | uint32_t magic; | |
74 | uint32_t code_crc; | |
75 | uint32_t code_size; | |
76 | uint8_t code[]; | |
77 | }; | |
78 | ||
79 | struct h_reg { | |
80 | bool valid; | |
81 | uint8_t digest[20]; | |
82 | }; | |
83 | ||
84 | ||
85 | enum access_mode { | |
86 | HREG_NONE = 0, | |
87 | HREG_RD = 1, | |
88 | HREG_WR = 2, | |
89 | HREG_RDWR = 3, | |
90 | }; | |
91 | ||
92 | /* register constants */ | |
93 | enum { | |
94 | FIX_HREG_DEVICE_ID_HASH = 0, | |
95 | FIX_HREG_SELF_HASH = 1, | |
96 | FIX_HREG_STAGE2_HASH = 2, | |
97 | FIX_HREG_VENDOR = 3, | |
98 | COUNT_FIX_HREGS | |
99 | }; | |
100 | ||
101 | ||
102 | /* hre opcodes */ | |
103 | enum { | |
104 | /* opcodes w/o data */ | |
105 | HRE_NOP = 0x00, | |
106 | HRE_SYNC = HRE_NOP, | |
107 | HRE_CHECK0 = 0x01, | |
108 | /* opcodes w/o data, w/ sync dst */ | |
109 | /* opcodes w/ data */ | |
110 | HRE_LOAD = 0x81, | |
111 | /* opcodes w/data, w/sync dst */ | |
112 | HRE_XOR = 0xC1, | |
113 | HRE_AND = 0xC2, | |
114 | HRE_OR = 0xC3, | |
115 | HRE_EXTEND = 0xC4, | |
116 | HRE_LOADKEY = 0xC5, | |
117 | }; | |
118 | ||
119 | /* hre errors */ | |
120 | enum { | |
121 | HRE_E_OK = 0, | |
122 | HRE_E_TPM_FAILURE, | |
123 | HRE_E_INVALID_HREG, | |
124 | }; | |
125 | ||
126 | static uint64_t device_id; | |
127 | static uint64_t device_cl; | |
128 | static uint64_t device_type; | |
129 | ||
130 | static uint32_t platform_key_handle; | |
131 | ||
132 | static void(*bl2_entry)(void); | |
133 | ||
134 | static struct h_reg pcr_hregs[24]; | |
135 | static struct h_reg fix_hregs[COUNT_FIX_HREGS]; | |
136 | static struct h_reg var_hregs[8]; | |
137 | static uint32_t hre_tpm_err; | |
138 | static int hre_err = HRE_E_OK; | |
139 | ||
140 | #define IS_PCR_HREG(spec) ((spec) & 0x20) | |
141 | #define IS_FIX_HREG(spec) (((spec) & 0x38) == 0x08) | |
142 | #define IS_VAR_HREG(spec) (((spec) & 0x38) == 0x10) | |
143 | #define HREG_IDX(spec) ((spec) & (IS_PCR_HREG(spec) ? 0x1f : 0x7)) | |
144 | ||
145 | ||
146 | static const uint8_t prg_stage1_prepare[] = { | |
147 | 0x00, 0x20, 0x00, 0x00, /* opcode: SYNC f0 */ | |
148 | 0x00, 0x24, 0x00, 0x00, /* opcode: SYNC f1 */ | |
149 | 0x01, 0x80, 0x00, 0x00, /* opcode: CHECK0 PCR0 */ | |
150 | 0x81, 0x22, 0x00, 0x00, /* opcode: LOAD PCR0, f0 */ | |
151 | 0x01, 0x84, 0x00, 0x00, /* opcode: CHECK0 PCR1 */ | |
152 | 0x81, 0x26, 0x10, 0x00, /* opcode: LOAD PCR1, f1 */ | |
153 | 0x01, 0x88, 0x00, 0x00, /* opcode: CHECK0 PCR2 */ | |
154 | 0x81, 0x2a, 0x20, 0x00, /* opcode: LOAD PCR2, f2 */ | |
155 | 0x01, 0x8c, 0x00, 0x00, /* opcode: CHECK0 PCR3 */ | |
156 | 0x81, 0x2e, 0x30, 0x00, /* opcode: LOAD PCR3, f3 */ | |
157 | }; | |
158 | ||
159 | static const uint8_t prg_stage2_prepare[] = { | |
160 | 0x00, 0x80, 0x00, 0x00, /* opcode: SYNC PCR0 */ | |
161 | 0x00, 0x84, 0x00, 0x00, /* opcode: SYNC PCR1 */ | |
162 | 0x00, 0x88, 0x00, 0x00, /* opcode: SYNC PCR2 */ | |
163 | 0x00, 0x8c, 0x00, 0x00, /* opcode: SYNC PCR3 */ | |
164 | 0x00, 0x90, 0x00, 0x00, /* opcode: SYNC PCR4 */ | |
165 | }; | |
166 | ||
167 | static const uint8_t prg_stage2_success[] = { | |
168 | 0x81, 0x02, 0x40, 0x14, /* opcode: LOAD PCR4, #<20B data> */ | |
169 | 0x48, 0xfd, 0x95, 0x17, 0xe7, 0x54, 0x6b, 0x68, /* data */ | |
170 | 0x92, 0x31, 0x18, 0x05, 0xf8, 0x58, 0x58, 0x3c, /* data */ | |
171 | 0xe4, 0xd2, 0x81, 0xe0, /* data */ | |
172 | }; | |
173 | ||
174 | static const uint8_t prg_stage_fail[] = { | |
175 | 0x81, 0x01, 0x00, 0x14, /* opcode: LOAD v0, #<20B data> */ | |
176 | 0xc0, 0x32, 0xad, 0xc1, 0xff, 0x62, 0x9c, 0x9b, /* data */ | |
177 | 0x66, 0xf2, 0x27, 0x49, 0xad, 0x66, 0x7e, 0x6b, /* data */ | |
178 | 0xea, 0xdf, 0x14, 0x4b, /* data */ | |
179 | 0x81, 0x42, 0x30, 0x00, /* opcode: LOAD PCR3, v0 */ | |
180 | 0x81, 0x42, 0x40, 0x00, /* opcode: LOAD PCR4, v0 */ | |
181 | }; | |
182 | ||
183 | static const uint8_t vendor[] = "Guntermann & Drunck"; | |
184 | ||
185 | ||
186 | /** | |
187 | * @brief read a bunch of data from MMC into memory. | |
188 | * | |
189 | * @param mmc pointer to the mmc structure to use. | |
190 | * @param src offset where the data starts on MMC/SD device (in bytes). | |
191 | * @param dst pointer to the location where the read data should be stored. | |
192 | * @param size number of bytes to read from the MMC/SD device. | |
193 | * @return number of bytes read or -1 on error. | |
194 | */ | |
195 | static int ccdm_mmc_read(struct mmc *mmc, u64 src, u8 *dst, int size) | |
196 | { | |
197 | int result = 0; | |
198 | u32 blk_len, ofs; | |
199 | ulong block_no, n, cnt; | |
200 | u8 *tmp_buf = NULL; | |
201 | ||
202 | if (size <= 0) | |
203 | goto end; | |
204 | ||
205 | blk_len = mmc->read_bl_len; | |
206 | tmp_buf = malloc(blk_len); | |
207 | if (!tmp_buf) | |
208 | goto failure; | |
209 | block_no = src / blk_len; | |
210 | ofs = src % blk_len; | |
211 | ||
212 | if (ofs) { | |
7c4213f6 | 213 | n = mmc->block_dev.block_read(&mmc->block_dev, block_no++, 1, |
b9944a77 DE |
214 | tmp_buf); |
215 | if (!n) | |
216 | goto failure; | |
b4141195 | 217 | result = min(size, (int)(blk_len - ofs)); |
b9944a77 DE |
218 | memcpy(dst, tmp_buf + ofs, result); |
219 | dst += result; | |
220 | size -= result; | |
221 | } | |
222 | cnt = size / blk_len; | |
223 | if (cnt) { | |
7c4213f6 | 224 | n = mmc->block_dev.block_read(&mmc->block_dev, block_no, cnt, |
b9944a77 DE |
225 | dst); |
226 | if (n != cnt) | |
227 | goto failure; | |
228 | size -= cnt * blk_len; | |
229 | result += cnt * blk_len; | |
230 | dst += cnt * blk_len; | |
231 | block_no += cnt; | |
232 | } | |
233 | if (size) { | |
7c4213f6 | 234 | n = mmc->block_dev.block_read(&mmc->block_dev, block_no++, 1, |
b9944a77 DE |
235 | tmp_buf); |
236 | if (!n) | |
237 | goto failure; | |
238 | memcpy(dst, tmp_buf, size); | |
239 | result += size; | |
240 | } | |
241 | goto end; | |
242 | failure: | |
243 | result = -1; | |
244 | end: | |
245 | if (tmp_buf) | |
246 | free(tmp_buf); | |
247 | return result; | |
248 | } | |
249 | ||
250 | /** | |
251 | * @brief returns a location where the 2nd stage bootloader can be(/ is) placed. | |
252 | * | |
253 | * @return pointer to the location for/of the 2nd stage bootloader | |
254 | */ | |
255 | static u8 *get_2nd_stage_bl_location(ulong target_addr) | |
256 | { | |
257 | ulong addr; | |
258 | #ifdef CCDM_SECOND_STAGE | |
259 | addr = getenv_ulong("loadaddr", 16, CONFIG_LOADADDR); | |
260 | #else | |
261 | addr = target_addr; | |
262 | #endif | |
263 | return (u8 *)(addr); | |
264 | } | |
265 | ||
266 | ||
267 | #ifdef CCDM_SECOND_STAGE | |
268 | /** | |
269 | * @brief returns a location where the image can be(/ is) placed. | |
270 | * | |
271 | * @return pointer to the location for/of the image | |
272 | */ | |
273 | static u8 *get_image_location(void) | |
274 | { | |
275 | ulong addr; | |
276 | /* TODO use other area? */ | |
277 | addr = getenv_ulong("loadaddr", 16, CONFIG_LOADADDR); | |
278 | return (u8 *)(addr); | |
279 | } | |
280 | #endif | |
281 | ||
282 | /** | |
283 | * @brief get the size of a given (TPM) NV area | |
284 | * @param index NV index of the area to get size for | |
285 | * @param size pointer to the size | |
286 | * @return 0 on success, != 0 on error | |
287 | */ | |
288 | static int get_tpm_nv_size(uint32_t index, uint32_t *size) | |
289 | { | |
290 | uint32_t err; | |
291 | uint8_t info[72]; | |
292 | uint8_t *ptr; | |
293 | uint16_t v16; | |
294 | ||
295 | err = tpm_get_capability(TPM_CAP_NV_INDEX, index, | |
296 | info, sizeof(info)); | |
297 | if (err) { | |
298 | printf("tpm_get_capability(CAP_NV_INDEX, %08x) failed: %u\n", | |
299 | index, err); | |
300 | return 1; | |
301 | } | |
302 | ||
303 | /* skip tag and nvIndex */ | |
304 | ptr = info + 6; | |
305 | /* skip 2 pcr info fields */ | |
306 | v16 = get_unaligned_be16(ptr); | |
307 | ptr += 2 + v16 + 1 + 20; | |
308 | v16 = get_unaligned_be16(ptr); | |
309 | ptr += 2 + v16 + 1 + 20; | |
310 | /* skip permission and flags */ | |
311 | ptr += 6 + 3; | |
312 | ||
313 | *size = get_unaligned_be32(ptr); | |
314 | return 0; | |
315 | } | |
316 | ||
317 | /** | |
318 | * @brief search for a key by usage auth and pub key hash. | |
319 | * @param auth usage auth of the key to search for | |
320 | * @param pubkey_digest (SHA1) hash of the pub key structure of the key | |
321 | * @param[out] handle the handle of the key iff found | |
322 | * @return 0 if key was found in TPM; != 0 if not. | |
323 | */ | |
324 | static int find_key(const uint8_t auth[20], const uint8_t pubkey_digest[20], | |
325 | uint32_t *handle) | |
326 | { | |
327 | uint16_t key_count; | |
328 | uint32_t key_handles[10]; | |
329 | uint8_t buf[288]; | |
330 | uint8_t *ptr; | |
331 | uint32_t err; | |
332 | uint8_t digest[20]; | |
333 | size_t buf_len; | |
334 | unsigned int i; | |
335 | ||
336 | /* fetch list of already loaded keys in the TPM */ | |
337 | err = tpm_get_capability(TPM_CAP_HANDLE, TPM_RT_KEY, buf, sizeof(buf)); | |
338 | if (err) | |
339 | return -1; | |
340 | key_count = get_unaligned_be16(buf); | |
341 | ptr = buf + 2; | |
342 | for (i = 0; i < key_count; ++i, ptr += 4) | |
343 | key_handles[i] = get_unaligned_be32(ptr); | |
344 | ||
345 | /* now search a(/ the) key which we can access with the given auth */ | |
346 | for (i = 0; i < key_count; ++i) { | |
347 | buf_len = sizeof(buf); | |
348 | err = tpm_get_pub_key_oiap(key_handles[i], auth, buf, &buf_len); | |
349 | if (err && err != TPM_AUTHFAIL) | |
350 | return -1; | |
351 | if (err) | |
352 | continue; | |
353 | sha1_csum(buf, buf_len, digest); | |
354 | if (!memcmp(digest, pubkey_digest, 20)) { | |
355 | *handle = key_handles[i]; | |
356 | return 0; | |
357 | } | |
358 | } | |
359 | return 1; | |
360 | } | |
361 | ||
362 | /** | |
363 | * @brief read CCDM common data from TPM NV | |
364 | * @return 0 if CCDM common data was found and read, !=0 if something failed. | |
365 | */ | |
366 | static int read_common_data(void) | |
367 | { | |
368 | uint32_t size; | |
369 | uint32_t err; | |
370 | uint8_t buf[256]; | |
371 | sha1_context ctx; | |
372 | ||
373 | if (get_tpm_nv_size(NV_COMMON_DATA_INDEX, &size) || | |
374 | size < NV_COMMON_DATA_MIN_SIZE) | |
375 | return 1; | |
376 | err = tpm_nv_read_value(NV_COMMON_DATA_INDEX, | |
377 | buf, min(sizeof(buf), size)); | |
378 | if (err) { | |
379 | printf("tpm_nv_read_value() failed: %u\n", err); | |
380 | return 1; | |
381 | } | |
382 | ||
383 | device_id = get_unaligned_be64(buf); | |
384 | device_cl = get_unaligned_be64(buf + 8); | |
385 | device_type = get_unaligned_be64(buf + 16); | |
386 | ||
387 | sha1_starts(&ctx); | |
388 | sha1_update(&ctx, buf, 24); | |
389 | sha1_finish(&ctx, fix_hregs[FIX_HREG_DEVICE_ID_HASH].digest); | |
390 | fix_hregs[FIX_HREG_DEVICE_ID_HASH].valid = true; | |
391 | ||
392 | platform_key_handle = get_unaligned_be32(buf + 24); | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
397 | /** | |
398 | * @brief compute hash of bootloader itself. | |
399 | * @param[out] dst hash register where the hash should be stored | |
400 | * @return 0 on success, != 0 on failure. | |
401 | * | |
402 | * @note MUST be called at a time where the boot loader is accessible at the | |
403 | * configured location (; so take care when code is reallocated). | |
404 | */ | |
405 | static int compute_self_hash(struct h_reg *dst) | |
406 | { | |
407 | sha1_csum((const uint8_t *)CONFIG_SYS_MONITOR_BASE, | |
408 | CONFIG_SYS_MONITOR_LEN, dst->digest); | |
409 | dst->valid = true; | |
410 | return 0; | |
411 | } | |
412 | ||
413 | int ccdm_compute_self_hash(void) | |
414 | { | |
415 | if (!fix_hregs[FIX_HREG_SELF_HASH].valid) | |
416 | compute_self_hash(&fix_hregs[FIX_HREG_SELF_HASH]); | |
417 | return 0; | |
418 | } | |
419 | ||
420 | /** | |
421 | * @brief compute the hash of the 2nd stage boot loader (on SD card) | |
422 | * @param[out] dst hash register to store the computed hash | |
423 | * @return 0 on success, != 0 on failure | |
424 | * | |
425 | * Determines the size and location of the 2nd stage boot loader on SD card, | |
426 | * loads the 2nd stage boot loader and computes the (SHA1) hash value. | |
427 | * Within the 1st stage boot loader, the 2nd stage boot loader is loaded at | |
428 | * the desired memory location and the variable @a bl2_entry is set. | |
429 | * | |
430 | * @note This sets the variable @a bl2_entry to the entry point when the | |
431 | * 2nd stage boot loader is loaded at its configured memory location. | |
432 | */ | |
433 | static int compute_second_stage_hash(struct h_reg *dst) | |
434 | { | |
435 | int result = 0; | |
436 | u32 code_len, code_offset, target_addr, exec_entry; | |
437 | struct mmc *mmc; | |
438 | u8 *load_addr = NULL; | |
439 | u8 buf[128]; | |
440 | ||
441 | mmc = find_mmc_device(0); | |
442 | if (!mmc) | |
443 | goto failure; | |
444 | mmc_init(mmc); | |
445 | ||
446 | if (ccdm_mmc_read(mmc, 0, buf, sizeof(buf)) < 0) | |
447 | goto failure; | |
448 | ||
449 | code_offset = *(u32 *)(buf + ESDHC_BOOT_IMAGE_ADDR_OFS); | |
450 | code_len = *(u32 *)(buf + ESDHC_BOOT_IMAGE_SIZE_OFS); | |
451 | target_addr = *(u32 *)(buf + ESDHC_BOOT_IMAGE_TARGET_OFS); | |
452 | exec_entry = *(u32 *)(buf + ESDHC_BOOT_IMAGE_ENTRY_OFS); | |
453 | ||
454 | load_addr = get_2nd_stage_bl_location(target_addr); | |
455 | if (load_addr == (u8 *)target_addr) | |
456 | bl2_entry = (void(*)(void))exec_entry; | |
457 | ||
458 | if (ccdm_mmc_read(mmc, code_offset, load_addr, code_len) < 0) | |
459 | goto failure; | |
460 | ||
461 | sha1_csum(load_addr, code_len, dst->digest); | |
462 | dst->valid = true; | |
463 | ||
464 | goto end; | |
465 | failure: | |
466 | result = 1; | |
467 | bl2_entry = NULL; | |
468 | end: | |
469 | return result; | |
470 | } | |
471 | ||
472 | /** | |
473 | * @brief get pointer to hash register by specification | |
474 | * @param spec specification of a hash register | |
475 | * @return pointer to hash register or NULL if @a spec does not qualify a | |
476 | * valid hash register; NULL else. | |
477 | */ | |
478 | static struct h_reg *get_hreg(uint8_t spec) | |
479 | { | |
480 | uint8_t idx; | |
481 | ||
482 | idx = HREG_IDX(spec); | |
483 | if (IS_FIX_HREG(spec)) { | |
484 | if (idx < ARRAY_SIZE(fix_hregs)) | |
485 | return fix_hregs + idx; | |
486 | hre_err = HRE_E_INVALID_HREG; | |
487 | } else if (IS_PCR_HREG(spec)) { | |
488 | if (idx < ARRAY_SIZE(pcr_hregs)) | |
489 | return pcr_hregs + idx; | |
490 | hre_err = HRE_E_INVALID_HREG; | |
491 | } else if (IS_VAR_HREG(spec)) { | |
492 | if (idx < ARRAY_SIZE(var_hregs)) | |
493 | return var_hregs + idx; | |
494 | hre_err = HRE_E_INVALID_HREG; | |
495 | } | |
496 | return NULL; | |
497 | } | |
498 | ||
499 | /** | |
500 | * @brief get pointer of a hash register by specification and usage. | |
501 | * @param spec specification of a hash register | |
502 | * @param mode access mode (read or write or read/write) | |
503 | * @return pointer to hash register if found and valid; NULL else. | |
504 | * | |
505 | * This func uses @a get_reg() to determine the hash register for a given spec. | |
506 | * If a register is found it is validated according to the desired access mode. | |
507 | * The value of automatic registers (PCR register and fixed registers) is | |
508 | * loaded or computed on read access. | |
509 | */ | |
510 | static struct h_reg *access_hreg(uint8_t spec, enum access_mode mode) | |
511 | { | |
512 | struct h_reg *result; | |
513 | ||
514 | result = get_hreg(spec); | |
515 | if (!result) | |
516 | return NULL; | |
517 | ||
518 | if (mode & HREG_WR) { | |
519 | if (IS_FIX_HREG(spec)) { | |
520 | hre_err = HRE_E_INVALID_HREG; | |
521 | return NULL; | |
522 | } | |
523 | } | |
524 | if (mode & HREG_RD) { | |
525 | if (!result->valid) { | |
526 | if (IS_PCR_HREG(spec)) { | |
527 | hre_tpm_err = tpm_pcr_read(HREG_IDX(spec), | |
528 | result->digest, 20); | |
529 | result->valid = (hre_tpm_err == TPM_SUCCESS); | |
530 | } else if (IS_FIX_HREG(spec)) { | |
531 | switch (HREG_IDX(spec)) { | |
532 | case FIX_HREG_DEVICE_ID_HASH: | |
533 | read_common_data(); | |
534 | break; | |
535 | case FIX_HREG_SELF_HASH: | |
536 | ccdm_compute_self_hash(); | |
537 | break; | |
538 | case FIX_HREG_STAGE2_HASH: | |
539 | compute_second_stage_hash(result); | |
540 | break; | |
541 | case FIX_HREG_VENDOR: | |
542 | memcpy(result->digest, vendor, 20); | |
543 | result->valid = true; | |
544 | break; | |
545 | } | |
546 | } else { | |
547 | result->valid = true; | |
548 | } | |
549 | } | |
550 | if (!result->valid) { | |
551 | hre_err = HRE_E_INVALID_HREG; | |
552 | return NULL; | |
553 | } | |
554 | } | |
555 | ||
556 | return result; | |
557 | } | |
558 | ||
559 | static void *compute_and(void *_dst, const void *_src, size_t n) | |
560 | { | |
561 | uint8_t *dst = _dst; | |
562 | const uint8_t *src = _src; | |
563 | size_t i; | |
564 | ||
565 | for (i = n; i-- > 0; ) | |
566 | *dst++ &= *src++; | |
567 | ||
568 | return _dst; | |
569 | } | |
570 | ||
571 | static void *compute_or(void *_dst, const void *_src, size_t n) | |
572 | { | |
573 | uint8_t *dst = _dst; | |
574 | const uint8_t *src = _src; | |
575 | size_t i; | |
576 | ||
577 | for (i = n; i-- > 0; ) | |
578 | *dst++ |= *src++; | |
579 | ||
580 | return _dst; | |
581 | } | |
582 | ||
583 | static void *compute_xor(void *_dst, const void *_src, size_t n) | |
584 | { | |
585 | uint8_t *dst = _dst; | |
586 | const uint8_t *src = _src; | |
587 | size_t i; | |
588 | ||
589 | for (i = n; i-- > 0; ) | |
590 | *dst++ ^= *src++; | |
591 | ||
592 | return _dst; | |
593 | } | |
594 | ||
595 | static void *compute_extend(void *_dst, const void *_src, size_t n) | |
596 | { | |
597 | uint8_t digest[20]; | |
598 | sha1_context ctx; | |
599 | ||
600 | sha1_starts(&ctx); | |
601 | sha1_update(&ctx, _dst, n); | |
602 | sha1_update(&ctx, _src, n); | |
603 | sha1_finish(&ctx, digest); | |
604 | memcpy(_dst, digest, min(n, sizeof(digest))); | |
605 | ||
606 | return _dst; | |
607 | } | |
608 | ||
609 | static int hre_op_loadkey(struct h_reg *src_reg, struct h_reg *dst_reg, | |
610 | const void *key, size_t key_size) | |
611 | { | |
612 | uint32_t parent_handle; | |
613 | uint32_t key_handle; | |
614 | ||
615 | if (!src_reg || !dst_reg || !src_reg->valid || !dst_reg->valid) | |
616 | return -1; | |
617 | if (find_key(src_reg->digest, dst_reg->digest, &parent_handle)) | |
618 | return -1; | |
619 | hre_tpm_err = tpm_load_key2_oiap(parent_handle, key, key_size, | |
620 | src_reg->digest, &key_handle); | |
621 | if (hre_tpm_err) { | |
622 | hre_err = HRE_E_TPM_FAILURE; | |
623 | return -1; | |
624 | } | |
625 | /* TODO remember key handle somehow? */ | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | /** | |
631 | * @brief executes the next opcode on the hash register engine. | |
632 | * @param[in,out] ip pointer to the opcode (instruction pointer) | |
633 | * @param[in,out] code_size (remaining) size of the code | |
634 | * @return new instruction pointer on success, NULL on error. | |
635 | */ | |
636 | static const uint8_t *hre_execute_op(const uint8_t **ip, size_t *code_size) | |
637 | { | |
638 | bool dst_modified = false; | |
639 | uint32_t ins; | |
640 | uint8_t opcode; | |
641 | uint8_t src_spec; | |
642 | uint8_t dst_spec; | |
643 | uint16_t data_size; | |
644 | struct h_reg *src_reg, *dst_reg; | |
645 | uint8_t buf[20]; | |
646 | const uint8_t *src_buf, *data; | |
647 | uint8_t *ptr; | |
648 | int i; | |
649 | void * (*bin_func)(void *, const void *, size_t); | |
650 | ||
651 | if (*code_size < 4) | |
652 | return NULL; | |
653 | ||
654 | ins = get_unaligned_be32(*ip); | |
655 | opcode = **ip; | |
656 | data = *ip + 4; | |
657 | src_spec = (ins >> 18) & 0x3f; | |
658 | dst_spec = (ins >> 12) & 0x3f; | |
659 | data_size = (ins & 0x7ff); | |
660 | ||
661 | debug("HRE: ins=%08x (op=%02x, s=%02x, d=%02x, L=%d)\n", ins, | |
662 | opcode, src_spec, dst_spec, data_size); | |
663 | ||
664 | if ((opcode & 0x80) && (data_size + 4) > *code_size) | |
665 | return NULL; | |
666 | ||
667 | src_reg = access_hreg(src_spec, HREG_RD); | |
668 | if (hre_err || hre_tpm_err) | |
669 | return NULL; | |
670 | dst_reg = access_hreg(dst_spec, (opcode & 0x40) ? HREG_RDWR : HREG_WR); | |
671 | if (hre_err || hre_tpm_err) | |
672 | return NULL; | |
673 | ||
674 | switch (opcode) { | |
675 | case HRE_NOP: | |
676 | goto end; | |
677 | case HRE_CHECK0: | |
678 | if (src_reg) { | |
679 | for (i = 0; i < 20; ++i) { | |
680 | if (src_reg->digest[i]) | |
681 | return NULL; | |
682 | } | |
683 | } | |
684 | break; | |
685 | case HRE_LOAD: | |
686 | bin_func = memcpy; | |
687 | goto do_bin_func; | |
688 | case HRE_XOR: | |
689 | bin_func = compute_xor; | |
690 | goto do_bin_func; | |
691 | case HRE_AND: | |
692 | bin_func = compute_and; | |
693 | goto do_bin_func; | |
694 | case HRE_OR: | |
695 | bin_func = compute_or; | |
696 | goto do_bin_func; | |
697 | case HRE_EXTEND: | |
698 | bin_func = compute_extend; | |
699 | do_bin_func: | |
700 | if (!dst_reg) | |
701 | return NULL; | |
702 | if (src_reg) { | |
703 | src_buf = src_reg->digest; | |
704 | } else { | |
705 | if (!data_size) { | |
706 | memset(buf, 0, 20); | |
707 | src_buf = buf; | |
708 | } else if (data_size == 1) { | |
709 | memset(buf, *data, 20); | |
710 | src_buf = buf; | |
711 | } else if (data_size >= 20) { | |
712 | src_buf = data; | |
713 | } else { | |
714 | src_buf = buf; | |
715 | for (ptr = (uint8_t *)src_buf, i = 20; i > 0; | |
716 | i -= data_size, ptr += data_size) | |
b4141195 MY |
717 | memcpy(ptr, data, |
718 | min_t(size_t, i, data_size)); | |
b9944a77 DE |
719 | } |
720 | } | |
721 | bin_func(dst_reg->digest, src_buf, 20); | |
722 | dst_reg->valid = true; | |
723 | dst_modified = true; | |
724 | break; | |
725 | case HRE_LOADKEY: | |
726 | if (hre_op_loadkey(src_reg, dst_reg, data, data_size)) | |
727 | return NULL; | |
728 | break; | |
729 | default: | |
730 | return NULL; | |
731 | } | |
732 | ||
733 | if (dst_reg && dst_modified && IS_PCR_HREG(dst_spec)) { | |
734 | hre_tpm_err = tpm_extend(HREG_IDX(dst_spec), dst_reg->digest, | |
735 | dst_reg->digest); | |
736 | if (hre_tpm_err) { | |
737 | hre_err = HRE_E_TPM_FAILURE; | |
738 | return NULL; | |
739 | } | |
740 | } | |
741 | end: | |
742 | *ip += 4; | |
743 | *code_size -= 4; | |
744 | if (opcode & 0x80) { | |
745 | *ip += data_size; | |
746 | *code_size -= data_size; | |
747 | } | |
748 | ||
749 | return *ip; | |
750 | } | |
751 | ||
752 | /** | |
753 | * @brief runs a program on the hash register engine. | |
754 | * @param code pointer to the (HRE) code. | |
755 | * @param code_size size of the code (in bytes). | |
756 | * @return 0 on success, != 0 on failure. | |
757 | */ | |
758 | static int hre_run_program(const uint8_t *code, size_t code_size) | |
759 | { | |
760 | size_t code_left; | |
761 | const uint8_t *ip = code; | |
762 | ||
763 | code_left = code_size; | |
764 | hre_tpm_err = 0; | |
765 | hre_err = HRE_E_OK; | |
766 | while (code_left > 0) | |
767 | if (!hre_execute_op(&ip, &code_left)) | |
768 | return -1; | |
769 | ||
770 | return hre_err; | |
771 | } | |
772 | ||
773 | static int check_hmac(struct key_program *hmac, | |
774 | const uint8_t *data, size_t data_size) | |
775 | { | |
776 | uint8_t key[20], computed_hmac[20]; | |
777 | uint32_t type; | |
778 | ||
779 | type = get_unaligned_be32(hmac->code); | |
780 | if (type != 0) | |
781 | return 1; | |
782 | memset(key, 0, sizeof(key)); | |
783 | compute_extend(key, pcr_hregs[1].digest, 20); | |
784 | compute_extend(key, pcr_hregs[2].digest, 20); | |
785 | compute_extend(key, pcr_hregs[3].digest, 20); | |
786 | compute_extend(key, pcr_hregs[4].digest, 20); | |
787 | ||
788 | sha1_hmac(key, sizeof(key), data, data_size, computed_hmac); | |
789 | ||
790 | return memcmp(computed_hmac, hmac->code + 4, 20); | |
791 | } | |
792 | ||
793 | static int verify_program(struct key_program *prg) | |
794 | { | |
795 | uint32_t crc; | |
796 | crc = crc32(0, prg->code, prg->code_size); | |
797 | ||
798 | if (crc != prg->code_crc) { | |
799 | printf("HRC crc mismatch: %08x != %08x\n", | |
800 | crc, prg->code_crc); | |
801 | return 1; | |
802 | } | |
803 | return 0; | |
804 | } | |
805 | ||
806 | #if defined(CCDM_FIRST_STAGE) || (defined CCDM_AUTO_FIRST_STAGE) | |
807 | static struct key_program *load_sd_key_program(void) | |
808 | { | |
809 | u32 code_len, code_offset; | |
810 | struct mmc *mmc; | |
811 | u8 buf[128]; | |
812 | struct key_program *result = NULL, *hmac = NULL; | |
813 | struct key_program header; | |
814 | ||
815 | mmc = find_mmc_device(0); | |
816 | if (!mmc) | |
817 | return NULL; | |
818 | mmc_init(mmc); | |
819 | ||
820 | if (ccdm_mmc_read(mmc, 0, buf, sizeof(buf)) <= 0) | |
821 | goto failure; | |
822 | ||
823 | code_offset = *(u32 *)(buf + ESDHC_BOOT_IMAGE_ADDR_OFS); | |
824 | code_len = *(u32 *)(buf + ESDHC_BOOT_IMAGE_SIZE_OFS); | |
825 | ||
826 | code_offset += code_len; | |
827 | /* TODO: the following needs to be the size of the 2nd stage env */ | |
828 | code_offset += CONFIG_ENV_SIZE; | |
829 | ||
830 | if (ccdm_mmc_read(mmc, code_offset, buf, 4*3) < 0) | |
831 | goto failure; | |
832 | ||
833 | header.magic = get_unaligned_be32(buf); | |
834 | header.code_crc = get_unaligned_be32(buf + 4); | |
835 | header.code_size = get_unaligned_be32(buf + 8); | |
836 | ||
837 | if (header.magic != MAGIC_KEY_PROGRAM) | |
838 | goto failure; | |
839 | ||
840 | result = malloc(sizeof(struct key_program) + header.code_size); | |
841 | if (!result) | |
842 | goto failure; | |
843 | *result = header; | |
844 | ||
845 | printf("load key program chunk from SD card (%u bytes) ", | |
846 | header.code_size); | |
847 | code_offset += 12; | |
848 | if (ccdm_mmc_read(mmc, code_offset, result->code, header.code_size) | |
849 | < 0) | |
850 | goto failure; | |
851 | code_offset += header.code_size; | |
852 | puts("\n"); | |
853 | ||
854 | if (verify_program(result)) | |
855 | goto failure; | |
856 | ||
857 | if (ccdm_mmc_read(mmc, code_offset, buf, 4*3) < 0) | |
858 | goto failure; | |
859 | ||
860 | header.magic = get_unaligned_be32(buf); | |
861 | header.code_crc = get_unaligned_be32(buf + 4); | |
862 | header.code_size = get_unaligned_be32(buf + 8); | |
863 | ||
864 | if (header.magic == MAGIC_HMAC) { | |
865 | puts("check integrity\n"); | |
866 | hmac = malloc(sizeof(struct key_program) + header.code_size); | |
867 | if (!hmac) | |
868 | goto failure; | |
869 | *hmac = header; | |
870 | code_offset += 12; | |
871 | if (ccdm_mmc_read(mmc, code_offset, hmac->code, | |
872 | hmac->code_size) < 0) | |
873 | goto failure; | |
874 | if (verify_program(hmac)) | |
875 | goto failure; | |
876 | if (check_hmac(hmac, result->code, result->code_size)) { | |
877 | puts("key program integrity could not be verified\n"); | |
878 | goto failure; | |
879 | } | |
880 | puts("key program verified\n"); | |
881 | } | |
882 | ||
883 | goto end; | |
884 | failure: | |
885 | if (result) | |
886 | free(result); | |
887 | result = NULL; | |
888 | end: | |
889 | if (hmac) | |
890 | free(hmac); | |
891 | ||
892 | return result; | |
893 | } | |
894 | #endif | |
895 | ||
896 | #ifdef CCDM_SECOND_STAGE | |
897 | /** | |
898 | * @brief load a key program from file system. | |
899 | * @param ifname interface of the file system | |
900 | * @param dev_part_str device part of the file system | |
901 | * @param fs_type tyep of the file system | |
902 | * @param path path of the file to load. | |
903 | * @return the loaded structure or NULL on failure. | |
904 | */ | |
905 | static struct key_program *load_key_chunk(const char *ifname, | |
906 | const char *dev_part_str, int fs_type, | |
907 | const char *path) | |
908 | { | |
909 | struct key_program *result = NULL; | |
910 | struct key_program header; | |
911 | uint32_t crc; | |
912 | uint8_t buf[12]; | |
d455d878 | 913 | loff_t i; |
b9944a77 DE |
914 | |
915 | if (fs_set_blk_dev(ifname, dev_part_str, fs_type)) | |
916 | goto failure; | |
d455d878 SR |
917 | if (fs_read(path, (ulong)buf, 0, 12, &i) < 0) |
918 | goto failure; | |
b9944a77 DE |
919 | if (i < 12) |
920 | goto failure; | |
921 | header.magic = get_unaligned_be32(buf); | |
922 | header.code_crc = get_unaligned_be32(buf + 4); | |
923 | header.code_size = get_unaligned_be32(buf + 8); | |
924 | ||
925 | if (header.magic != MAGIC_HMAC && header.magic != MAGIC_KEY_PROGRAM) | |
926 | goto failure; | |
927 | ||
928 | result = malloc(sizeof(struct key_program) + header.code_size); | |
929 | if (!result) | |
930 | goto failure; | |
931 | if (fs_set_blk_dev(ifname, dev_part_str, fs_type)) | |
932 | goto failure; | |
d455d878 SR |
933 | if (fs_read(path, (ulong)result, 0, |
934 | sizeof(struct key_program) + header.code_size, &i) < 0) | |
935 | goto failure; | |
b9944a77 DE |
936 | if (i <= 0) |
937 | goto failure; | |
938 | *result = header; | |
939 | ||
940 | crc = crc32(0, result->code, result->code_size); | |
941 | ||
942 | if (crc != result->code_crc) { | |
943 | printf("%s: HRC crc mismatch: %08x != %08x\n", | |
944 | path, crc, result->code_crc); | |
945 | goto failure; | |
946 | } | |
947 | goto end; | |
948 | failure: | |
949 | if (result) { | |
950 | free(result); | |
951 | result = NULL; | |
952 | } | |
953 | end: | |
954 | return result; | |
955 | } | |
956 | #endif | |
957 | ||
958 | #if defined(CCDM_FIRST_STAGE) || (defined CCDM_AUTO_FIRST_STAGE) | |
959 | static int first_stage_actions(void) | |
960 | { | |
961 | int result = 0; | |
962 | struct key_program *sd_prg = NULL; | |
963 | ||
964 | puts("CCDM S1: start actions\n"); | |
965 | #ifndef CCDM_SECOND_STAGE | |
966 | if (tpm_continue_self_test()) | |
967 | goto failure; | |
968 | #else | |
969 | tpm_continue_self_test(); | |
970 | #endif | |
971 | mdelay(37); | |
972 | ||
973 | if (hre_run_program(prg_stage1_prepare, sizeof(prg_stage1_prepare))) | |
974 | goto failure; | |
975 | ||
976 | sd_prg = load_sd_key_program(); | |
977 | if (sd_prg) { | |
978 | if (hre_run_program(sd_prg->code, sd_prg->code_size)) | |
979 | goto failure; | |
980 | puts("SD code run successfully\n"); | |
981 | } else { | |
982 | puts("no key program found on SD\n"); | |
983 | goto failure; | |
984 | } | |
985 | goto end; | |
986 | failure: | |
987 | result = 1; | |
988 | end: | |
989 | if (sd_prg) | |
990 | free(sd_prg); | |
991 | printf("CCDM S1: actions done (%d)\n", result); | |
992 | return result; | |
993 | } | |
994 | #endif | |
995 | ||
996 | #ifdef CCDM_FIRST_STAGE | |
997 | static int first_stage_init(void) | |
998 | { | |
999 | int res = 0; | |
1000 | puts("CCDM S1\n"); | |
1001 | if (tpm_init() || tpm_startup(TPM_ST_CLEAR)) | |
1002 | return 1; | |
1003 | res = first_stage_actions(); | |
1004 | #ifndef CCDM_SECOND_STAGE | |
1005 | if (!res) { | |
1006 | if (bl2_entry) | |
1007 | (*bl2_entry)(); | |
1008 | res = 1; | |
1009 | } | |
1010 | #endif | |
1011 | return res; | |
1012 | } | |
1013 | #endif | |
1014 | ||
1015 | #ifdef CCDM_SECOND_STAGE | |
1016 | static int second_stage_init(void) | |
1017 | { | |
1018 | static const char mac_suffix[] = ".mac"; | |
1019 | bool did_first_stage_run = true; | |
1020 | int result = 0; | |
1021 | char *cptr, *mmcdev = NULL; | |
1022 | struct key_program *hmac_blob = NULL; | |
1023 | const char *image_path = "/ccdm.itb"; | |
1024 | char *mac_path = NULL; | |
1025 | ulong image_addr; | |
d455d878 | 1026 | loff_t image_size; |
b9944a77 DE |
1027 | uint32_t err; |
1028 | ||
1029 | printf("CCDM S2\n"); | |
1030 | if (tpm_init()) | |
1031 | return 1; | |
1032 | err = tpm_startup(TPM_ST_CLEAR); | |
1033 | if (err != TPM_INVALID_POSTINIT) | |
1034 | did_first_stage_run = false; | |
1035 | ||
1036 | #ifdef CCDM_AUTO_FIRST_STAGE | |
1037 | if (!did_first_stage_run && first_stage_actions()) | |
1038 | goto failure; | |
1039 | #else | |
1040 | if (!did_first_stage_run) | |
1041 | goto failure; | |
1042 | #endif | |
1043 | ||
1044 | if (hre_run_program(prg_stage2_prepare, sizeof(prg_stage2_prepare))) | |
1045 | goto failure; | |
1046 | ||
1047 | /* run "prepboot" from env to get "mmcdev" set */ | |
1048 | cptr = getenv("prepboot"); | |
1049 | if (cptr && !run_command(cptr, 0)) | |
1050 | mmcdev = getenv("mmcdev"); | |
1051 | if (!mmcdev) | |
1052 | goto failure; | |
1053 | ||
1054 | cptr = getenv("ramdiskimage"); | |
1055 | if (cptr) | |
1056 | image_path = cptr; | |
1057 | ||
1058 | mac_path = malloc(strlen(image_path) + strlen(mac_suffix) + 1); | |
1059 | if (mac_path == NULL) | |
1060 | goto failure; | |
1061 | strcpy(mac_path, image_path); | |
1062 | strcat(mac_path, mac_suffix); | |
1063 | ||
1064 | /* read image from mmcdev (ccdm.itb) */ | |
1065 | image_addr = (ulong)get_image_location(); | |
1066 | if (fs_set_blk_dev("mmc", mmcdev, FS_TYPE_EXT)) | |
1067 | goto failure; | |
d455d878 SR |
1068 | if (fs_read(image_path, image_addr, 0, 0, &image_size) < 0) |
1069 | goto failure; | |
b9944a77 DE |
1070 | if (image_size <= 0) |
1071 | goto failure; | |
d455d878 | 1072 | printf("CCDM image found on %s, %lld bytes\n", mmcdev, image_size); |
b9944a77 DE |
1073 | |
1074 | hmac_blob = load_key_chunk("mmc", mmcdev, FS_TYPE_EXT, mac_path); | |
1075 | if (!hmac_blob) { | |
1076 | puts("failed to load mac file\n"); | |
1077 | goto failure; | |
1078 | } | |
1079 | if (verify_program(hmac_blob)) { | |
1080 | puts("corrupted mac file\n"); | |
1081 | goto failure; | |
1082 | } | |
1083 | if (check_hmac(hmac_blob, (u8 *)image_addr, image_size)) { | |
1084 | puts("image integrity could not be verified\n"); | |
1085 | goto failure; | |
1086 | } | |
1087 | puts("CCDM image OK\n"); | |
1088 | ||
1089 | hre_run_program(prg_stage2_success, sizeof(prg_stage2_success)); | |
1090 | ||
1091 | goto end; | |
1092 | failure: | |
1093 | result = 1; | |
1094 | hre_run_program(prg_stage_fail, sizeof(prg_stage_fail)); | |
1095 | end: | |
1096 | if (hmac_blob) | |
1097 | free(hmac_blob); | |
1098 | if (mac_path) | |
1099 | free(mac_path); | |
1100 | ||
1101 | return result; | |
1102 | } | |
1103 | #endif | |
1104 | ||
1105 | int show_self_hash(void) | |
1106 | { | |
1107 | struct h_reg *hash_ptr; | |
1108 | #ifdef CCDM_SECOND_STAGE | |
1109 | struct h_reg hash; | |
1110 | ||
1111 | hash_ptr = &hash; | |
1112 | if (compute_self_hash(hash_ptr)) | |
1113 | return 1; | |
1114 | #else | |
1115 | hash_ptr = &fix_hregs[FIX_HREG_SELF_HASH]; | |
1116 | #endif | |
1117 | puts("self hash: "); | |
1118 | if (hash_ptr && hash_ptr->valid) | |
1119 | print_buffer(0, hash_ptr->digest, 1, 20, 20); | |
1120 | else | |
1121 | puts("INVALID\n"); | |
1122 | ||
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | /** | |
1127 | * @brief let the system hang. | |
1128 | * | |
1129 | * Called on error. | |
1130 | * Will stop the boot process; display a message and signal the error condition | |
1131 | * by blinking the "status" and the "finder" LED of the controller board. | |
1132 | * | |
1133 | * @note the develop version runs the blink cycle 2 times and then returns. | |
1134 | * The release version never returns. | |
1135 | */ | |
1136 | static void ccdm_hang(void) | |
1137 | { | |
1138 | static const u64 f0 = 0x0ba3bb8ba2e880; /* blink code "finder" LED */ | |
1139 | static const u64 s0 = 0x00f0f0f0f0f0f0; /* blink code "status" LED */ | |
1140 | u64 f, s; | |
1141 | int i; | |
1142 | #ifdef CCDM_DEVELOP | |
1143 | int j; | |
1144 | #endif | |
1145 | ||
35ecf752 | 1146 | I2C_SET_BUS(I2C_SOC_0); |
b9944a77 DE |
1147 | pca9698_direction_output(0x22, 0, 0); /* Finder */ |
1148 | pca9698_direction_output(0x22, 4, 0); /* Status */ | |
1149 | ||
1150 | puts("### ERROR ### Please RESET the board ###\n"); | |
1151 | bootstage_error(BOOTSTAGE_ID_NEED_RESET); | |
1152 | #ifdef CCDM_DEVELOP | |
1153 | puts("*** ERROR ******** THIS WOULD HANG ******** ERROR ***\n"); | |
1154 | puts("** but we continue since this is a DEVELOP version **\n"); | |
1155 | puts("*** ERROR ******** THIS WOULD HANG ******** ERROR ***\n"); | |
1156 | for (j = 2; j-- > 0;) { | |
1157 | putc('#'); | |
1158 | #else | |
1159 | for (;;) { | |
1160 | #endif | |
1161 | f = f0; | |
1162 | s = s0; | |
1163 | for (i = 54; i-- > 0;) { | |
1164 | pca9698_set_value(0x22, 0, !(f & 1)); | |
1165 | pca9698_set_value(0x22, 4, (s & 1)); | |
1166 | f >>= 1; | |
1167 | s >>= 1; | |
1168 | mdelay(120); | |
1169 | } | |
1170 | } | |
1171 | puts("\ncontinue...\n"); | |
1172 | } | |
1173 | ||
1174 | int startup_ccdm_id_module(void) | |
1175 | { | |
1176 | int result = 0; | |
1177 | unsigned int orig_i2c_bus; | |
1178 | ||
35ecf752 DE |
1179 | orig_i2c_bus = i2c_get_bus_num(); |
1180 | i2c_set_bus_num(I2C_SOC_1); | |
b9944a77 DE |
1181 | |
1182 | /* goto end; */ | |
1183 | ||
1184 | #ifdef CCDM_DEVELOP | |
1185 | show_self_hash(); | |
1186 | #endif | |
1187 | #ifdef CCDM_FIRST_STAGE | |
1188 | result = first_stage_init(); | |
1189 | if (result) { | |
1190 | puts("1st stage init failed\n"); | |
1191 | goto failure; | |
1192 | } | |
1193 | #endif | |
1194 | #ifdef CCDM_SECOND_STAGE | |
1195 | result = second_stage_init(); | |
1196 | if (result) { | |
1197 | puts("2nd stage init failed\n"); | |
1198 | goto failure; | |
1199 | } | |
1200 | #endif | |
1201 | ||
1202 | goto end; | |
1203 | failure: | |
1204 | result = 1; | |
1205 | end: | |
35ecf752 | 1206 | i2c_set_bus_num(orig_i2c_bus); |
b9944a77 DE |
1207 | if (result) |
1208 | ccdm_hang(); | |
1209 | ||
1210 | return result; | |
1211 | } |