1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2010-2015 Freescale Semiconductor, Inc.
4 */
5
6 #include <common.h>
7 #include <config.h>
8 #include <fuse.h>
9 #include <mapmem.h>
10 #include <image.h>
11 #include <asm/io.h>
12 #include <asm/system.h>
13 #include <asm/arch/clock.h>
14 #include <asm/arch/sys_proto.h>
15 #include <asm/mach-imx/hab.h>
16
17 #define ALIGN_SIZE 0x1000
18 #define MX6DQ_PU_IROM_MMU_EN_VAR 0x009024a8
19 #define MX6DLS_PU_IROM_MMU_EN_VAR 0x00901dd0
20 #define MX6SL_PU_IROM_MMU_EN_VAR 0x00900a18
21 #define IS_HAB_ENABLED_BIT \
22 (is_soc_type(MXC_SOC_MX7ULP) ? 0x80000000 : \
23 (is_soc_type(MXC_SOC_MX7) ? 0x2000000 : 0x2))
24
ivt_header_error(const char * err_str,struct ivt_header * ivt_hdr)25 static int ivt_header_error(const char *err_str, struct ivt_header *ivt_hdr)
26 {
27 printf("%s magic=0x%x length=0x%02x version=0x%x\n", err_str,
28 ivt_hdr->magic, ivt_hdr->length, ivt_hdr->version);
29
30 return 1;
31 }
32
verify_ivt_header(struct ivt_header * ivt_hdr)33 static int verify_ivt_header(struct ivt_header *ivt_hdr)
34 {
35 int result = 0;
36
37 if (ivt_hdr->magic != IVT_HEADER_MAGIC)
38 result = ivt_header_error("bad magic", ivt_hdr);
39
40 if (be16_to_cpu(ivt_hdr->length) != IVT_TOTAL_LENGTH)
41 result = ivt_header_error("bad length", ivt_hdr);
42
43 if (ivt_hdr->version != IVT_HEADER_V1 &&
44 ivt_hdr->version != IVT_HEADER_V2)
45 result = ivt_header_error("bad version", ivt_hdr);
46
47 return result;
48 }
49
50 #if !defined(CONFIG_SPL_BUILD)
51
52 #define MAX_RECORD_BYTES (8*1024) /* 4 kbytes */
53
54 struct record {
55 uint8_t tag; /* Tag */
56 uint8_t len[2]; /* Length */
57 uint8_t par; /* Version */
58 uint8_t contents[MAX_RECORD_BYTES];/* Record Data */
59 bool any_rec_flag;
60 };
61
62 static char *rsn_str[] = {
63 "RSN = HAB_RSN_ANY (0x00)\n",
64 "RSN = HAB_ENG_FAIL (0x30)\n",
65 "RSN = HAB_INV_ADDRESS (0x22)\n",
66 "RSN = HAB_INV_ASSERTION (0x0C)\n",
67 "RSN = HAB_INV_CALL (0x28)\n",
68 "RSN = HAB_INV_CERTIFICATE (0x21)\n",
69 "RSN = HAB_INV_COMMAND (0x06)\n",
70 "RSN = HAB_INV_CSF (0x11)\n",
71 "RSN = HAB_INV_DCD (0x27)\n",
72 "RSN = HAB_INV_INDEX (0x0F)\n",
73 "RSN = HAB_INV_IVT (0x05)\n",
74 "RSN = HAB_INV_KEY (0x1D)\n",
75 "RSN = HAB_INV_RETURN (0x1E)\n",
76 "RSN = HAB_INV_SIGNATURE (0x18)\n",
77 "RSN = HAB_INV_SIZE (0x17)\n",
78 "RSN = HAB_MEM_FAIL (0x2E)\n",
79 "RSN = HAB_OVR_COUNT (0x2B)\n",
80 "RSN = HAB_OVR_STORAGE (0x2D)\n",
81 "RSN = HAB_UNS_ALGORITHM (0x12)\n",
82 "RSN = HAB_UNS_COMMAND (0x03)\n",
83 "RSN = HAB_UNS_ENGINE (0x0A)\n",
84 "RSN = HAB_UNS_ITEM (0x24)\n",
85 "RSN = HAB_UNS_KEY (0x1B)\n",
86 "RSN = HAB_UNS_PROTOCOL (0x14)\n",
87 "RSN = HAB_UNS_STATE (0x09)\n",
88 "RSN = INVALID\n",
89 NULL
90 };
91
92 static char *sts_str[] = {
93 "STS = HAB_SUCCESS (0xF0)\n",
94 "STS = HAB_FAILURE (0x33)\n",
95 "STS = HAB_WARNING (0x69)\n",
96 "STS = INVALID\n",
97 NULL
98 };
99
100 static char *eng_str[] = {
101 "ENG = HAB_ENG_ANY (0x00)\n",
102 "ENG = HAB_ENG_SCC (0x03)\n",
103 "ENG = HAB_ENG_RTIC (0x05)\n",
104 "ENG = HAB_ENG_SAHARA (0x06)\n",
105 "ENG = HAB_ENG_CSU (0x0A)\n",
106 "ENG = HAB_ENG_SRTC (0x0C)\n",
107 "ENG = HAB_ENG_DCP (0x1B)\n",
108 "ENG = HAB_ENG_CAAM (0x1D)\n",
109 "ENG = HAB_ENG_SNVS (0x1E)\n",
110 "ENG = HAB_ENG_OCOTP (0x21)\n",
111 "ENG = HAB_ENG_DTCP (0x22)\n",
112 "ENG = HAB_ENG_ROM (0x36)\n",
113 "ENG = HAB_ENG_HDCP (0x24)\n",
114 "ENG = HAB_ENG_RTL (0x77)\n",
115 "ENG = HAB_ENG_SW (0xFF)\n",
116 "ENG = INVALID\n",
117 NULL
118 };
119
120 static char *ctx_str[] = {
121 "CTX = HAB_CTX_ANY(0x00)\n",
122 "CTX = HAB_CTX_FAB (0xFF)\n",
123 "CTX = HAB_CTX_ENTRY (0xE1)\n",
124 "CTX = HAB_CTX_TARGET (0x33)\n",
125 "CTX = HAB_CTX_AUTHENTICATE (0x0A)\n",
126 "CTX = HAB_CTX_DCD (0xDD)\n",
127 "CTX = HAB_CTX_CSF (0xCF)\n",
128 "CTX = HAB_CTX_COMMAND (0xC0)\n",
129 "CTX = HAB_CTX_AUT_DAT (0xDB)\n",
130 "CTX = HAB_CTX_ASSERT (0xA0)\n",
131 "CTX = HAB_CTX_EXIT (0xEE)\n",
132 "CTX = INVALID\n",
133 NULL
134 };
135
136 static uint8_t hab_statuses[5] = {
137 HAB_STS_ANY,
138 HAB_FAILURE,
139 HAB_WARNING,
140 HAB_SUCCESS,
141 -1
142 };
143
144 static uint8_t hab_reasons[26] = {
145 HAB_RSN_ANY,
146 HAB_ENG_FAIL,
147 HAB_INV_ADDRESS,
148 HAB_INV_ASSERTION,
149 HAB_INV_CALL,
150 HAB_INV_CERTIFICATE,
151 HAB_INV_COMMAND,
152 HAB_INV_CSF,
153 HAB_INV_DCD,
154 HAB_INV_INDEX,
155 HAB_INV_IVT,
156 HAB_INV_KEY,
157 HAB_INV_RETURN,
158 HAB_INV_SIGNATURE,
159 HAB_INV_SIZE,
160 HAB_MEM_FAIL,
161 HAB_OVR_COUNT,
162 HAB_OVR_STORAGE,
163 HAB_UNS_ALGORITHM,
164 HAB_UNS_COMMAND,
165 HAB_UNS_ENGINE,
166 HAB_UNS_ITEM,
167 HAB_UNS_KEY,
168 HAB_UNS_PROTOCOL,
169 HAB_UNS_STATE,
170 -1
171 };
172
173 static uint8_t hab_contexts[12] = {
174 HAB_CTX_ANY,
175 HAB_CTX_FAB,
176 HAB_CTX_ENTRY,
177 HAB_CTX_TARGET,
178 HAB_CTX_AUTHENTICATE,
179 HAB_CTX_DCD,
180 HAB_CTX_CSF,
181 HAB_CTX_COMMAND,
182 HAB_CTX_AUT_DAT,
183 HAB_CTX_ASSERT,
184 HAB_CTX_EXIT,
185 -1
186 };
187
188 static uint8_t hab_engines[16] = {
189 HAB_ENG_ANY,
190 HAB_ENG_SCC,
191 HAB_ENG_RTIC,
192 HAB_ENG_SAHARA,
193 HAB_ENG_CSU,
194 HAB_ENG_SRTC,
195 HAB_ENG_DCP,
196 HAB_ENG_CAAM,
197 HAB_ENG_SNVS,
198 HAB_ENG_OCOTP,
199 HAB_ENG_DTCP,
200 HAB_ENG_ROM,
201 HAB_ENG_HDCP,
202 HAB_ENG_RTL,
203 HAB_ENG_SW,
204 -1
205 };
206
get_idx(uint8_t * list,uint8_t tgt)207 static inline uint8_t get_idx(uint8_t *list, uint8_t tgt)
208 {
209 uint8_t idx = 0;
210 uint8_t element = list[idx];
211 while (element != -1) {
212 if (element == tgt)
213 return idx;
214 element = list[++idx];
215 }
216 return -1;
217 }
218
process_event_record(uint8_t * event_data,size_t bytes)219 static void process_event_record(uint8_t *event_data, size_t bytes)
220 {
221 struct record *rec = (struct record *)event_data;
222
223 printf("\n\n%s", sts_str[get_idx(hab_statuses, rec->contents[0])]);
224 printf("%s", rsn_str[get_idx(hab_reasons, rec->contents[1])]);
225 printf("%s", ctx_str[get_idx(hab_contexts, rec->contents[2])]);
226 printf("%s", eng_str[get_idx(hab_engines, rec->contents[3])]);
227 }
228
display_event(uint8_t * event_data,size_t bytes)229 static void display_event(uint8_t *event_data, size_t bytes)
230 {
231 uint32_t i;
232
233 if (!(event_data && bytes > 0))
234 return;
235
236 for (i = 0; i < bytes; i++) {
237 if (i == 0)
238 printf("\t0x%02x", event_data[i]);
239 else if ((i % 8) == 0)
240 printf("\n\t0x%02x", event_data[i]);
241 else
242 printf(" 0x%02x", event_data[i]);
243 }
244
245 process_event_record(event_data, bytes);
246 }
247
get_hab_status(void)248 static int get_hab_status(void)
249 {
250 uint32_t index = 0; /* Loop index */
251 uint8_t event_data[128]; /* Event data buffer */
252 size_t bytes = sizeof(event_data); /* Event size in bytes */
253 enum hab_config config = 0;
254 enum hab_state state = 0;
255 hab_rvt_report_event_t *hab_rvt_report_event;
256 hab_rvt_report_status_t *hab_rvt_report_status;
257
258 hab_rvt_report_event = (hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT;
259 hab_rvt_report_status =
260 (hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS;
261
262 if (imx_hab_is_enabled())
263 puts("\nSecure boot enabled\n");
264 else
265 puts("\nSecure boot disabled\n");
266
267 /* Check HAB status */
268 if (hab_rvt_report_status(&config, &state) != HAB_SUCCESS) {
269 printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
270 config, state);
271
272 /* Display HAB Error events */
273 while (hab_rvt_report_event(HAB_FAILURE, index, event_data,
274 &bytes) == HAB_SUCCESS) {
275 puts("\n");
276 printf("--------- HAB Event %d -----------------\n",
277 index + 1);
278 puts("event data:\n");
279 display_event(event_data, bytes);
280 puts("\n");
281 bytes = sizeof(event_data);
282 index++;
283 }
284 }
285 /* Display message if no HAB events are found */
286 else {
287 printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
288 config, state);
289 puts("No HAB Events Found!\n\n");
290 }
291 return 0;
292 }
293
do_hab_status(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])294 static int do_hab_status(cmd_tbl_t *cmdtp, int flag, int argc,
295 char * const argv[])
296 {
297 if ((argc != 1)) {
298 cmd_usage(cmdtp);
299 return 1;
300 }
301
302 get_hab_status();
303
304 return 0;
305 }
306
get_image_ivt_offset(ulong img_addr)307 static ulong get_image_ivt_offset(ulong img_addr)
308 {
309 const void *buf;
310
311 buf = map_sysmem(img_addr, 0);
312 switch (genimg_get_format(buf)) {
313 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
314 case IMAGE_FORMAT_LEGACY:
315 return (image_get_image_size((image_header_t *)img_addr)
316 + 0x1000 - 1) & ~(0x1000 - 1);
317 #endif
318 #if IMAGE_ENABLE_FIT
319 case IMAGE_FORMAT_FIT:
320 return (fit_get_size(buf) + 0x1000 - 1) & ~(0x1000 - 1);
321 #endif
322 default:
323 return 0;
324 }
325 }
326
do_authenticate_image(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])327 static int do_authenticate_image(cmd_tbl_t *cmdtp, int flag, int argc,
328 char * const argv[])
329 {
330 ulong addr, length, ivt_offset;
331 int rcode = 0;
332
333 if (argc < 3)
334 return CMD_RET_USAGE;
335
336 addr = simple_strtoul(argv[1], NULL, 16);
337 length = simple_strtoul(argv[2], NULL, 16);
338 if (argc == 3)
339 ivt_offset = get_image_ivt_offset(addr);
340 else
341 ivt_offset = simple_strtoul(argv[3], NULL, 16);
342
343 rcode = imx_hab_authenticate_image(addr, length, ivt_offset);
344 if (rcode == 0)
345 rcode = CMD_RET_SUCCESS;
346 else
347 rcode = CMD_RET_FAILURE;
348
349 return rcode;
350 }
351
do_hab_failsafe(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])352 static int do_hab_failsafe(cmd_tbl_t *cmdtp, int flag, int argc,
353 char * const argv[])
354 {
355 hab_rvt_failsafe_t *hab_rvt_failsafe;
356
357 if (argc != 1) {
358 cmd_usage(cmdtp);
359 return 1;
360 }
361
362 hab_rvt_failsafe = (hab_rvt_failsafe_t *)HAB_RVT_FAILSAFE;
363 hab_rvt_failsafe();
364
365 return 0;
366 }
367
do_authenticate_image_or_failover(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])368 static int do_authenticate_image_or_failover(cmd_tbl_t *cmdtp, int flag,
369 int argc, char * const argv[])
370 {
371 int ret = CMD_RET_FAILURE;
372
373 if (argc != 4) {
374 ret = CMD_RET_USAGE;
375 goto error;
376 }
377
378 if (!imx_hab_is_enabled()) {
379 printf("error: secure boot disabled\n");
380 goto error;
381 }
382
383 if (do_authenticate_image(NULL, flag, argc, argv) != CMD_RET_SUCCESS) {
384 fprintf(stderr, "authentication fail -> %s %s %s %s\n",
385 argv[0], argv[1], argv[2], argv[3]);
386 do_hab_failsafe(0, 0, 1, NULL);
387 };
388 ret = CMD_RET_SUCCESS;
389 error:
390 return ret;
391 }
392
393 U_BOOT_CMD(
394 hab_status, CONFIG_SYS_MAXARGS, 1, do_hab_status,
395 "display HAB status",
396 ""
397 );
398
399 U_BOOT_CMD(
400 hab_auth_img, 4, 0, do_authenticate_image,
401 "authenticate image via HAB",
402 "addr length ivt_offset\n"
403 "addr - image hex address\n"
404 "length - image hex length\n"
405 "ivt_offset - hex offset of IVT in the image"
406 );
407
408 U_BOOT_CMD(
409 hab_failsafe, CONFIG_SYS_MAXARGS, 1, do_hab_failsafe,
410 "run BootROM failsafe routine",
411 ""
412 );
413
414 U_BOOT_CMD(
415 hab_auth_img_or_fail, 4, 0,
416 do_authenticate_image_or_failover,
417 "authenticate image via HAB on failure drop to USB BootROM mode",
418 "addr length ivt_offset\n"
419 "addr - image hex address\n"
420 "length - image hex length\n"
421 "ivt_offset - hex offset of IVT in the image"
422 );
423
424 #endif /* !defined(CONFIG_SPL_BUILD) */
425
426 /* Get CSF Header length */
get_hab_hdr_len(struct hab_hdr * hdr)427 static int get_hab_hdr_len(struct hab_hdr *hdr)
428 {
429 return (size_t)((hdr->len[0] << 8) + (hdr->len[1]));
430 }
431
432 /* Check whether addr lies between start and
433 * end and is within the length of the image
434 */
chk_bounds(u8 * addr,size_t bytes,u8 * start,u8 * end)435 static int chk_bounds(u8 *addr, size_t bytes, u8 *start, u8 *end)
436 {
437 size_t csf_size = (size_t)((end + 1) - addr);
438
439 return (addr && (addr >= start) && (addr <= end) &&
440 (csf_size >= bytes));
441 }
442
443 /* Get Length of each command in CSF */
get_csf_cmd_hdr_len(u8 * csf_hdr)444 static int get_csf_cmd_hdr_len(u8 *csf_hdr)
445 {
446 if (*csf_hdr == HAB_CMD_HDR)
447 return sizeof(struct hab_hdr);
448
449 return get_hab_hdr_len((struct hab_hdr *)csf_hdr);
450 }
451
452 /* Check if CSF is valid */
csf_is_valid(struct ivt * ivt,ulong start_addr,size_t bytes)453 static bool csf_is_valid(struct ivt *ivt, ulong start_addr, size_t bytes)
454 {
455 u8 *start = (u8 *)start_addr;
456 u8 *csf_hdr;
457 u8 *end;
458
459 size_t csf_hdr_len;
460 size_t cmd_hdr_len;
461 size_t offset = 0;
462
463 if (bytes != 0)
464 end = start + bytes - 1;
465 else
466 end = start;
467
468 /* Verify if CSF pointer content is zero */
469 if (!ivt->csf) {
470 puts("Error: CSF pointer is NULL\n");
471 return false;
472 }
473
474 csf_hdr = (u8 *)ivt->csf;
475
476 /* Verify if CSF Header exist */
477 if (*csf_hdr != HAB_CMD_HDR) {
478 puts("Error: CSF header command not found\n");
479 return false;
480 }
481
482 csf_hdr_len = get_hab_hdr_len((struct hab_hdr *)csf_hdr);
483
484 /* Check if the CSF lies within the image bounds */
485 if (!chk_bounds(csf_hdr, csf_hdr_len, start, end)) {
486 puts("Error: CSF lies outside the image bounds\n");
487 return false;
488 }
489
490 do {
491 struct hab_hdr *cmd;
492
493 cmd = (struct hab_hdr *)&csf_hdr[offset];
494
495 switch (cmd->tag) {
496 case (HAB_CMD_WRT_DAT):
497 puts("Error: Deprecated write command found\n");
498 return false;
499 case (HAB_CMD_CHK_DAT):
500 puts("Error: Deprecated check command found\n");
501 return false;
502 case (HAB_CMD_SET):
503 if (cmd->par == HAB_PAR_MID) {
504 puts("Error: Deprecated Set MID command found\n");
505 return false;
506 }
507 default:
508 break;
509 }
510
511 cmd_hdr_len = get_csf_cmd_hdr_len(&csf_hdr[offset]);
512 if (!cmd_hdr_len) {
513 puts("Error: Invalid command length\n");
514 return false;
515 }
516 offset += cmd_hdr_len;
517
518 } while (offset < csf_hdr_len);
519
520 return true;
521 }
522
imx_hab_is_enabled(void)523 bool imx_hab_is_enabled(void)
524 {
525 struct imx_sec_config_fuse_t *fuse =
526 (struct imx_sec_config_fuse_t *)&imx_sec_config_fuse;
527 uint32_t reg;
528 int ret;
529
530 ret = fuse_read(fuse->bank, fuse->word, ®);
531 if (ret) {
532 puts("\nSecure boot fuse read error\n");
533 return ret;
534 }
535
536 return (reg & IS_HAB_ENABLED_BIT) == IS_HAB_ENABLED_BIT;
537 }
538
imx_hab_authenticate_image(uint32_t ddr_start,uint32_t image_size,uint32_t ivt_offset)539 int imx_hab_authenticate_image(uint32_t ddr_start, uint32_t image_size,
540 uint32_t ivt_offset)
541 {
542 uint32_t load_addr = 0;
543 size_t bytes;
544 uint32_t ivt_addr = 0;
545 int result = 1;
546 ulong start;
547 hab_rvt_authenticate_image_t *hab_rvt_authenticate_image;
548 hab_rvt_entry_t *hab_rvt_entry;
549 hab_rvt_exit_t *hab_rvt_exit;
550 hab_rvt_check_target_t *hab_rvt_check_target;
551 struct ivt *ivt;
552 struct ivt_header *ivt_hdr;
553 enum hab_status status;
554
555 hab_rvt_authenticate_image =
556 (hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE;
557 hab_rvt_entry = (hab_rvt_entry_t *)HAB_RVT_ENTRY;
558 hab_rvt_exit = (hab_rvt_exit_t *)HAB_RVT_EXIT;
559 hab_rvt_check_target = (hab_rvt_check_target_t *)HAB_RVT_CHECK_TARGET;
560
561 if (!imx_hab_is_enabled()) {
562 puts("hab fuse not enabled\n");
563 return 0;
564 }
565
566 printf("\nAuthenticate image from DDR location 0x%x...\n",
567 ddr_start);
568
569 hab_caam_clock_enable(1);
570
571 /* Calculate IVT address header */
572 ivt_addr = ddr_start + ivt_offset;
573 ivt = (struct ivt *)ivt_addr;
574 ivt_hdr = &ivt->hdr;
575
576 /* Verify IVT header bugging out on error */
577 if (verify_ivt_header(ivt_hdr))
578 goto hab_authentication_exit;
579
580 /* Verify IVT body */
581 if (ivt->self != ivt_addr) {
582 printf("ivt->self 0x%08x pointer is 0x%08x\n",
583 ivt->self, ivt_addr);
584 goto hab_authentication_exit;
585 }
586
587 /* Verify if IVT DCD pointer is NULL */
588 if (ivt->dcd)
589 puts("Warning: DCD pointer should be NULL\n");
590
591 start = ddr_start;
592 bytes = image_size;
593
594 /* Verify CSF */
595 if (!csf_is_valid(ivt, start, bytes))
596 goto hab_authentication_exit;
597
598 if (hab_rvt_entry() != HAB_SUCCESS) {
599 puts("hab entry function fail\n");
600 goto hab_exit_failure_print_status;
601 }
602
603 status = hab_rvt_check_target(HAB_TGT_MEMORY, (void *)ddr_start, bytes);
604 if (status != HAB_SUCCESS) {
605 printf("HAB check target 0x%08x-0x%08x fail\n",
606 ddr_start, ddr_start + bytes);
607 goto hab_exit_failure_print_status;
608 }
609 #ifdef DEBUG
610 printf("\nivt_offset = 0x%x, ivt addr = 0x%x\n", ivt_offset, ivt_addr);
611 printf("ivt entry = 0x%08x, dcd = 0x%08x, csf = 0x%08x\n", ivt->entry,
612 ivt->dcd, ivt->csf);
613 puts("Dumping IVT\n");
614 print_buffer(ivt_addr, (void *)(ivt_addr), 4, 0x8, 0);
615
616 puts("Dumping CSF Header\n");
617 print_buffer(ivt->csf, (void *)(ivt->csf), 4, 0x10, 0);
618
619 #if !defined(CONFIG_SPL_BUILD)
620 get_hab_status();
621 #endif
622
623 puts("\nCalling authenticate_image in ROM\n");
624 printf("\tivt_offset = 0x%x\n", ivt_offset);
625 printf("\tstart = 0x%08lx\n", start);
626 printf("\tbytes = 0x%x\n", bytes);
627 #endif
628 /*
629 * If the MMU is enabled, we have to notify the ROM
630 * code, or it won't flush the caches when needed.
631 * This is done, by setting the "pu_irom_mmu_enabled"
632 * word to 1. You can find its address by looking in
633 * the ROM map. This is critical for
634 * authenticate_image(). If MMU is enabled, without
635 * setting this bit, authentication will fail and may
636 * crash.
637 */
638 /* Check MMU enabled */
639 if (is_soc_type(MXC_SOC_MX6) && get_cr() & CR_M) {
640 if (is_mx6dq()) {
641 /*
642 * This won't work on Rev 1.0.0 of
643 * i.MX6Q/D, since their ROM doesn't
644 * do cache flushes. don't think any
645 * exist, so we ignore them.
646 */
647 if (!is_mx6dqp())
648 writel(1, MX6DQ_PU_IROM_MMU_EN_VAR);
649 } else if (is_mx6sdl()) {
650 writel(1, MX6DLS_PU_IROM_MMU_EN_VAR);
651 } else if (is_mx6sl()) {
652 writel(1, MX6SL_PU_IROM_MMU_EN_VAR);
653 }
654 }
655
656 load_addr = (uint32_t)hab_rvt_authenticate_image(
657 HAB_CID_UBOOT,
658 ivt_offset, (void **)&start,
659 (size_t *)&bytes, NULL);
660 if (hab_rvt_exit() != HAB_SUCCESS) {
661 puts("hab exit function fail\n");
662 load_addr = 0;
663 }
664
665 hab_exit_failure_print_status:
666 #if !defined(CONFIG_SPL_BUILD)
667 get_hab_status();
668 #endif
669
670 hab_authentication_exit:
671
672 if (load_addr != 0)
673 result = 0;
674
675 return result;
676 }
677