Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 | /*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <bcmdefs.h>
#include <osl.h>
#include <linuxver.h>
#include <bcmdevs.h>
#include <bcmutils.h>
#include <siutils.h>
#include <bcmendian.h>
#include <hndsoc.h>
#include <sbchipc.h>
#include <bcmotp.h>
#include "siutils_priv.h"
/*
* There are two different OTP controllers so far:
* 1. new IPX OTP controller: chipc 21, >=23
* 2. older HND OTP controller: chipc 12, 17, 22
*
* Define BCMHNDOTP to include support for the HND OTP controller.
* Define BCMIPXOTP to include support for the IPX OTP controller.
*
* NOTE 1: More than one may be defined
* NOTE 2: If none are defined, the default is to include them all.
*/
#if !defined(BCMHNDOTP) && !defined(BCMIPXOTP)
#define BCMHNDOTP 1
#define BCMIPXOTP 1
#endif
#define OTPTYPE_HND(ccrev) ((ccrev) < 21 || (ccrev) == 22)
#define OTPTYPE_IPX(ccrev) ((ccrev) == 21 || (ccrev) >= 23)
#define OTPP_TRIES 10000000 /* # of tries for OTPP */
#ifdef BCMIPXOTP
#define MAXNUMRDES 9 /* Maximum OTP redundancy entries */
#endif
/* OTP common function type */
typedef int (*otp_status_t) (void *oh);
typedef int (*otp_size_t) (void *oh);
typedef void *(*otp_init_t) (si_t *sih);
typedef u16(*otp_read_bit_t) (void *oh, chipcregs_t *cc, uint off);
typedef int (*otp_read_region_t) (si_t *sih, int region, u16 *data,
uint *wlen);
typedef int (*otp_nvread_t) (void *oh, char *data, uint *len);
/* OTP function struct */
typedef struct otp_fn_s {
otp_size_t size;
otp_read_bit_t read_bit;
otp_init_t init;
otp_read_region_t read_region;
otp_nvread_t nvread;
otp_status_t status;
} otp_fn_t;
typedef struct {
uint ccrev; /* chipc revision */
otp_fn_t *fn; /* OTP functions */
si_t *sih; /* Saved sb handle */
osl_t *osh;
#ifdef BCMIPXOTP
/* IPX OTP section */
u16 wsize; /* Size of otp in words */
u16 rows; /* Geometry */
u16 cols; /* Geometry */
u32 status; /* Flag bits (lock/prog/rv).
* (Reflected only when OTP is power cycled)
*/
u16 hwbase; /* hardware subregion offset */
u16 hwlim; /* hardware subregion boundary */
u16 swbase; /* software subregion offset */
u16 swlim; /* software subregion boundary */
u16 fbase; /* fuse subregion offset */
u16 flim; /* fuse subregion boundary */
int otpgu_base; /* offset to General Use Region */
#endif /* BCMIPXOTP */
#ifdef BCMHNDOTP
/* HND OTP section */
uint size; /* Size of otp in bytes */
uint hwprot; /* Hardware protection bits */
uint signvalid; /* Signature valid bits */
int boundary; /* hw/sw boundary */
#endif /* BCMHNDOTP */
} otpinfo_t;
static otpinfo_t otpinfo;
/*
* IPX OTP Code
*
* Exported functions:
* ipxotp_status()
* ipxotp_size()
* ipxotp_init()
* ipxotp_read_bit()
* ipxotp_read_region()
* ipxotp_nvread()
*
*/
#ifdef BCMIPXOTP
#define HWSW_RGN(rgn) (((rgn) == OTP_HW_RGN) ? "h/w" : "s/w")
/* OTP layout */
/* CC revs 21, 24 and 27 OTP General Use Region word offset */
#define REVA4_OTPGU_BASE 12
/* CC revs 23, 25, 26, 28 and above OTP General Use Region word offset */
#define REVB8_OTPGU_BASE 20
/* CC rev 36 OTP General Use Region word offset */
#define REV36_OTPGU_BASE 12
/* Subregion word offsets in General Use region */
#define OTPGU_HSB_OFF 0
#define OTPGU_SFB_OFF 1
#define OTPGU_CI_OFF 2
#define OTPGU_P_OFF 3
#define OTPGU_SROM_OFF 4
/* Flag bit offsets in General Use region */
#define OTPGU_HWP_OFF 60
#define OTPGU_SWP_OFF 61
#define OTPGU_CIP_OFF 62
#define OTPGU_FUSEP_OFF 63
#define OTPGU_CIP_MSK 0x4000
#define OTPGU_P_MSK 0xf000
#define OTPGU_P_SHIFT (OTPGU_HWP_OFF % 16)
/* OTP Size */
#define OTP_SZ_FU_324 ((roundup(324, 8))/8) /* 324 bits */
#define OTP_SZ_FU_288 (288/8) /* 288 bits */
#define OTP_SZ_FU_216 (216/8) /* 216 bits */
#define OTP_SZ_FU_72 (72/8) /* 72 bits */
#define OTP_SZ_CHECKSUM (16/8) /* 16 bits */
#define OTP4315_SWREG_SZ 178 /* 178 bytes */
#define OTP_SZ_FU_144 (144/8) /* 144 bits */
static int ipxotp_status(void *oh)
{
otpinfo_t *oi = (otpinfo_t *) oh;
return (int)(oi->status);
}
/* Return size in bytes */
static int ipxotp_size(void *oh)
{
otpinfo_t *oi = (otpinfo_t *) oh;
return (int)oi->wsize * 2;
}
static u16 ipxotp_otpr(void *oh, chipcregs_t *cc, uint wn)
{
otpinfo_t *oi;
oi = (otpinfo_t *) oh;
ASSERT(wn < oi->wsize);
ASSERT(cc != NULL);
return R_REG(oi->osh, &cc->sromotp[wn]);
}
static u16 ipxotp_read_bit(void *oh, chipcregs_t *cc, uint off)
{
otpinfo_t *oi = (otpinfo_t *) oh;
uint k, row, col;
u32 otpp, st;
row = off / oi->cols;
col = off % oi->cols;
otpp = OTPP_START_BUSY |
((OTPPOC_READ << OTPP_OC_SHIFT) & OTPP_OC_MASK) |
((row << OTPP_ROW_SHIFT) & OTPP_ROW_MASK) |
((col << OTPP_COL_SHIFT) & OTPP_COL_MASK);
W_REG(oi->osh, &cc->otpprog, otpp);
for (k = 0;
((st = R_REG(oi->osh, &cc->otpprog)) & OTPP_START_BUSY)
&& (k < OTPP_TRIES); k++)
;
if (k >= OTPP_TRIES) {
return 0xffff;
}
if (st & OTPP_READERR) {
return 0xffff;
}
st = (st & OTPP_VALUE_MASK) >> OTPP_VALUE_SHIFT;
return (int)st;
}
/* Calculate max HW/SW region byte size by substracting fuse region and checksum size,
* osizew is oi->wsize (OTP size - GU size) in words
*/
static int ipxotp_max_rgnsz(si_t *sih, int osizew)
{
int ret = 0;
switch (CHIPID(sih->chip)) {
case BCM43224_CHIP_ID:
case BCM43225_CHIP_ID:
ret = osizew * 2 - OTP_SZ_FU_72 - OTP_SZ_CHECKSUM;
break;
case BCM4313_CHIP_ID:
ret = osizew * 2 - OTP_SZ_FU_72 - OTP_SZ_CHECKSUM;
break;
default:
ASSERT(0); /* Don't konw about this chip */
}
return ret;
}
static void _ipxotp_init(otpinfo_t *oi, chipcregs_t *cc)
{
uint k;
u32 otpp, st;
/* record word offset of General Use Region for various chipcommon revs */
if (oi->sih->ccrev == 21 || oi->sih->ccrev == 24
|| oi->sih->ccrev == 27) {
oi->otpgu_base = REVA4_OTPGU_BASE;
} else if (oi->sih->ccrev == 36) {
/* OTP size greater than equal to 2KB (128 words), otpgu_base is similar to rev23 */
if (oi->wsize >= 128)
oi->otpgu_base = REVB8_OTPGU_BASE;
else
oi->otpgu_base = REV36_OTPGU_BASE;
} else if (oi->sih->ccrev == 23 || oi->sih->ccrev >= 25) {
oi->otpgu_base = REVB8_OTPGU_BASE;
}
/* First issue an init command so the status is up to date */
otpp =
OTPP_START_BUSY | ((OTPPOC_INIT << OTPP_OC_SHIFT) & OTPP_OC_MASK);
W_REG(oi->osh, &cc->otpprog, otpp);
for (k = 0;
((st = R_REG(oi->osh, &cc->otpprog)) & OTPP_START_BUSY)
&& (k < OTPP_TRIES); k++)
;
if (k >= OTPP_TRIES) {
return;
}
/* Read OTP lock bits and subregion programmed indication bits */
oi->status = R_REG(oi->osh, &cc->otpstatus);
if ((CHIPID(oi->sih->chip) == BCM43224_CHIP_ID)
|| (CHIPID(oi->sih->chip) == BCM43225_CHIP_ID)) {
u32 p_bits;
p_bits =
(ipxotp_otpr(oi, cc, oi->otpgu_base + OTPGU_P_OFF) &
OTPGU_P_MSK)
>> OTPGU_P_SHIFT;
oi->status |= (p_bits << OTPS_GUP_SHIFT);
}
/*
* h/w region base and fuse region limit are fixed to the top and
* the bottom of the general use region. Everything else can be flexible.
*/
oi->hwbase = oi->otpgu_base + OTPGU_SROM_OFF;
oi->hwlim = oi->wsize;
if (oi->status & OTPS_GUP_HW) {
oi->hwlim =
ipxotp_otpr(oi, cc, oi->otpgu_base + OTPGU_HSB_OFF) / 16;
oi->swbase = oi->hwlim;
} else
oi->swbase = oi->hwbase;
/* subtract fuse and checksum from beginning */
oi->swlim = ipxotp_max_rgnsz(oi->sih, oi->wsize) / 2;
if (oi->status & OTPS_GUP_SW) {
oi->swlim =
ipxotp_otpr(oi, cc, oi->otpgu_base + OTPGU_SFB_OFF) / 16;
oi->fbase = oi->swlim;
} else
oi->fbase = oi->swbase;
oi->flim = oi->wsize;
}
static void *ipxotp_init(si_t *sih)
{
uint idx;
chipcregs_t *cc;
otpinfo_t *oi;
/* Make sure we're running IPX OTP */
ASSERT(OTPTYPE_IPX(sih->ccrev));
if (!OTPTYPE_IPX(sih->ccrev))
return NULL;
/* Make sure OTP is not disabled */
if (si_is_otp_disabled(sih)) {
return NULL;
}
/* Make sure OTP is powered up */
if (!si_is_otp_powered(sih)) {
return NULL;
}
oi = &otpinfo;
/* Check for otp size */
switch ((sih->cccaps & CC_CAP_OTPSIZE) >> CC_CAP_OTPSIZE_SHIFT) {
case 0:
/* Nothing there */
return NULL;
case 1: /* 32x64 */
oi->rows = 32;
oi->cols = 64;
oi->wsize = 128;
break;
case 2: /* 64x64 */
oi->rows = 64;
oi->cols = 64;
oi->wsize = 256;
break;
case 5: /* 96x64 */
oi->rows = 96;
oi->cols = 64;
oi->wsize = 384;
break;
case 7: /* 16x64 *//* 1024 bits */
oi->rows = 16;
oi->cols = 64;
oi->wsize = 64;
break;
default:
/* Don't know the geometry */
return NULL;
}
/* Retrieve OTP region info */
idx = si_coreidx(sih);
cc = si_setcoreidx(sih, SI_CC_IDX);
ASSERT(cc != NULL);
_ipxotp_init(oi, cc);
si_setcoreidx(sih, idx);
return (void *)oi;
}
static int ipxotp_read_region(void *oh, int region, u16 *data, uint *wlen)
{
otpinfo_t *oi = (otpinfo_t *) oh;
uint idx;
chipcregs_t *cc;
uint base, i, sz;
/* Validate region selection */
switch (region) {
case OTP_HW_RGN:
sz = (uint) oi->hwlim - oi->hwbase;
if (!(oi->status & OTPS_GUP_HW)) {
*wlen = sz;
return BCME_NOTFOUND;
}
if (*wlen < sz) {
*wlen = sz;
return BCME_BUFTOOSHORT;
}
base = oi->hwbase;
break;
case OTP_SW_RGN:
sz = ((uint) oi->swlim - oi->swbase);
if (!(oi->status & OTPS_GUP_SW)) {
*wlen = sz;
return BCME_NOTFOUND;
}
if (*wlen < sz) {
*wlen = sz;
return BCME_BUFTOOSHORT;
}
base = oi->swbase;
break;
case OTP_CI_RGN:
sz = OTPGU_CI_SZ;
if (!(oi->status & OTPS_GUP_CI)) {
*wlen = sz;
return BCME_NOTFOUND;
}
if (*wlen < sz) {
*wlen = sz;
return BCME_BUFTOOSHORT;
}
base = oi->otpgu_base + OTPGU_CI_OFF;
break;
case OTP_FUSE_RGN:
sz = (uint) oi->flim - oi->fbase;
if (!(oi->status & OTPS_GUP_FUSE)) {
*wlen = sz;
return BCME_NOTFOUND;
}
if (*wlen < sz) {
*wlen = sz;
return BCME_BUFTOOSHORT;
}
base = oi->fbase;
break;
case OTP_ALL_RGN:
sz = ((uint) oi->flim - oi->hwbase);
if (!(oi->status & (OTPS_GUP_HW | OTPS_GUP_SW))) {
*wlen = sz;
return BCME_NOTFOUND;
}
if (*wlen < sz) {
*wlen = sz;
return BCME_BUFTOOSHORT;
}
base = oi->hwbase;
break;
default:
return BCME_BADARG;
}
idx = si_coreidx(oi->sih);
cc = si_setcoreidx(oi->sih, SI_CC_IDX);
ASSERT(cc != NULL);
/* Read the data */
for (i = 0; i < sz; i++)
data[i] = ipxotp_otpr(oh, cc, base + i);
si_setcoreidx(oi->sih, idx);
*wlen = sz;
return 0;
}
static int ipxotp_nvread(void *oh, char *data, uint *len)
{
return BCME_UNSUPPORTED;
}
static otp_fn_t ipxotp_fn = {
(otp_size_t) ipxotp_size,
(otp_read_bit_t) ipxotp_read_bit,
(otp_init_t) ipxotp_init,
(otp_read_region_t) ipxotp_read_region,
(otp_nvread_t) ipxotp_nvread,
(otp_status_t) ipxotp_status
};
#endif /* BCMIPXOTP */
/*
* HND OTP Code
*
* Exported functions:
* hndotp_status()
* hndotp_size()
* hndotp_init()
* hndotp_read_bit()
* hndotp_read_region()
* hndotp_nvread()
*
*/
#ifdef BCMHNDOTP
/* Fields in otpstatus */
#define OTPS_PROGFAIL 0x80000000
#define OTPS_PROTECT 0x00000007
#define OTPS_HW_PROTECT 0x00000001
#define OTPS_SW_PROTECT 0x00000002
#define OTPS_CID_PROTECT 0x00000004
#define OTPS_RCEV_MSK 0x00003f00
#define OTPS_RCEV_SHIFT 8
/* Fields in the otpcontrol register */
#define OTPC_RECWAIT 0xff000000
#define OTPC_PROGWAIT 0x00ffff00
#define OTPC_PRW_SHIFT 8
#define OTPC_MAXFAIL 0x00000038
#define OTPC_VSEL 0x00000006
#define OTPC_SELVL 0x00000001
/* OTP regions (Word offsets from otp size) */
#define OTP_SWLIM_OFF (-4)
#define OTP_CIDBASE_OFF 0
#define OTP_CIDLIM_OFF 4
/* Predefined OTP words (Word offset from otp size) */
#define OTP_BOUNDARY_OFF (-4)
#define OTP_HWSIGN_OFF (-3)
#define OTP_SWSIGN_OFF (-2)
#define OTP_CIDSIGN_OFF (-1)
#define OTP_CID_OFF 0
#define OTP_PKG_OFF 1
#define OTP_FID_OFF 2
#define OTP_RSV_OFF 3
#define OTP_LIM_OFF 4
#define OTP_RD_OFF 4 /* Redundancy row starts here */
#define OTP_RC0_OFF 28 /* Redundancy control word 1 */
#define OTP_RC1_OFF 32 /* Redundancy control word 2 */
#define OTP_RC_LIM_OFF 36 /* Redundancy control word end */
#define OTP_HW_REGION OTPS_HW_PROTECT
#define OTP_SW_REGION OTPS_SW_PROTECT
#define OTP_CID_REGION OTPS_CID_PROTECT
#if OTP_HW_REGION != OTP_HW_RGN
#error "incompatible OTP_HW_RGN"
#endif
#if OTP_SW_REGION != OTP_SW_RGN
#error "incompatible OTP_SW_RGN"
#endif
#if OTP_CID_REGION != OTP_CI_RGN
#error "incompatible OTP_CI_RGN"
#endif
/* Redundancy entry definitions */
#define OTP_RCE_ROW_SZ 6
#define OTP_RCE_SIGN_MASK 0x7fff
#define OTP_RCE_ROW_MASK 0x3f
#define OTP_RCE_BITS 21
#define OTP_RCE_SIGN_SZ 15
#define OTP_RCE_BIT0 1
#define OTP_WPR 4
#define OTP_SIGNATURE 0x578a
#define OTP_MAGIC 0x4e56
static int hndotp_status(void *oh)
{
otpinfo_t *oi = (otpinfo_t *) oh;
return (int)(oi->hwprot | oi->signvalid);
}
static int hndotp_size(void *oh)
{
otpinfo_t *oi = (otpinfo_t *) oh;
return (int)(oi->size);
}
static u16 hndotp_otpr(void *oh, chipcregs_t *cc, uint wn)
{
otpinfo_t *oi = (otpinfo_t *) oh;
osl_t *osh;
volatile u16 *ptr;
ASSERT(wn < ((oi->size / 2) + OTP_RC_LIM_OFF));
ASSERT(cc != NULL);
osh = si_osh(oi->sih);
ptr = (volatile u16 *)((volatile char *)cc + CC_SROM_OTP);
return R_REG(osh, &ptr[wn]);
}
static u16 hndotp_otproff(void *oh, chipcregs_t *cc, int woff)
{
otpinfo_t *oi = (otpinfo_t *) oh;
osl_t *osh;
volatile u16 *ptr;
ASSERT(woff >= (-((int)oi->size / 2)));
ASSERT(woff < OTP_LIM_OFF);
ASSERT(cc != NULL);
osh = si_osh(oi->sih);
ptr = (volatile u16 *)((volatile char *)cc + CC_SROM_OTP);
return R_REG(osh, &ptr[(oi->size / 2) + woff]);
}
static u16 hndotp_read_bit(void *oh, chipcregs_t *cc, uint idx)
{
otpinfo_t *oi = (otpinfo_t *) oh;
uint k, row, col;
u32 otpp, st;
osl_t *osh;
osh = si_osh(oi->sih);
row = idx / 65;
col = idx % 65;
otpp = OTPP_START_BUSY | OTPP_READ |
((row << OTPP_ROW_SHIFT) & OTPP_ROW_MASK) | (col & OTPP_COL_MASK);
W_REG(osh, &cc->otpprog, otpp);
st = R_REG(osh, &cc->otpprog);
for (k = 0;
((st & OTPP_START_BUSY) == OTPP_START_BUSY) && (k < OTPP_TRIES);
k++)
st = R_REG(osh, &cc->otpprog);
if (k >= OTPP_TRIES) {
return 0xffff;
}
if (st & OTPP_READERR) {
return 0xffff;
}
st = (st & OTPP_VALUE_MASK) >> OTPP_VALUE_SHIFT;
return (u16) st;
}
static void *hndotp_init(si_t *sih)
{
uint idx;
chipcregs_t *cc;
otpinfo_t *oi;
u32 cap = 0, clkdiv, otpdiv = 0;
void *ret = NULL;
osl_t *osh;
oi = &otpinfo;
idx = si_coreidx(sih);
osh = si_osh(oi->sih);
/* Check for otp */
cc = si_setcoreidx(sih, SI_CC_IDX);
if (cc != NULL) {
cap = R_REG(osh, &cc->capabilities);
if ((cap & CC_CAP_OTPSIZE) == 0) {
/* Nothing there */
goto out;
}
/* As of right now, support only 4320a2, 4311a1 and 4312 */
ASSERT((oi->ccrev == 12) || (oi->ccrev == 17)
|| (oi->ccrev == 22));
if (!
((oi->ccrev == 12) || (oi->ccrev == 17)
|| (oi->ccrev == 22)))
return NULL;
/* Read the OTP byte size. chipcommon rev >= 18 has RCE so the size is
* 8 row (64 bytes) smaller
*/
oi->size =
1 << (((cap & CC_CAP_OTPSIZE) >> CC_CAP_OTPSIZE_SHIFT)
+ CC_CAP_OTPSIZE_BASE);
if (oi->ccrev >= 18)
oi->size -= ((OTP_RC0_OFF - OTP_BOUNDARY_OFF) * 2);
oi->hwprot = (int)(R_REG(osh, &cc->otpstatus) & OTPS_PROTECT);
oi->boundary = -1;
/* Check the region signature */
if (hndotp_otproff(oi, cc, OTP_HWSIGN_OFF) == OTP_SIGNATURE) {
oi->signvalid |= OTP_HW_REGION;
oi->boundary = hndotp_otproff(oi, cc, OTP_BOUNDARY_OFF);
}
if (hndotp_otproff(oi, cc, OTP_SWSIGN_OFF) == OTP_SIGNATURE)
oi->signvalid |= OTP_SW_REGION;
if (hndotp_otproff(oi, cc, OTP_CIDSIGN_OFF) == OTP_SIGNATURE)
oi->signvalid |= OTP_CID_REGION;
/* Set OTP clkdiv for stability */
if (oi->ccrev == 22)
otpdiv = 12;
if (otpdiv) {
clkdiv = R_REG(osh, &cc->clkdiv);
clkdiv =
(clkdiv & ~CLKD_OTP) | (otpdiv << CLKD_OTP_SHIFT);
W_REG(osh, &cc->clkdiv, clkdiv);
}
udelay(10);
ret = (void *)oi;
}
out: /* All done */
si_setcoreidx(sih, idx);
return ret;
}
static int hndotp_read_region(void *oh, int region, u16 *data, uint *wlen)
{
otpinfo_t *oi = (otpinfo_t *) oh;
u32 idx, st;
chipcregs_t *cc;
int i;
/* Only support HW region (no active chips use HND OTP SW region) */
ASSERT(region == OTP_HW_REGION);
/* Region empty? */
st = oi->hwprot | oi->signvalid;
if ((st & region) == 0)
return BCME_NOTFOUND;
*wlen =
((int)*wlen < oi->boundary / 2) ? *wlen : (uint) oi->boundary / 2;
idx = si_coreidx(oi->sih);
cc = si_setcoreidx(oi->sih, SI_CC_IDX);
ASSERT(cc != NULL);
for (i = 0; i < (int)*wlen; i++)
data[i] = hndotp_otpr(oh, cc, i);
si_setcoreidx(oi->sih, idx);
return 0;
}
static int hndotp_nvread(void *oh, char *data, uint *len)
{
int rc = 0;
otpinfo_t *oi = (otpinfo_t *) oh;
u32 base, bound, lim = 0, st;
int i, chunk, gchunks, tsz = 0;
u32 idx;
chipcregs_t *cc;
uint offset;
u16 *rawotp = NULL;
/* save the orig core */
idx = si_coreidx(oi->sih);
cc = si_setcoreidx(oi->sih, SI_CC_IDX);
ASSERT(cc != NULL);
st = hndotp_status(oh);
if (!(st & (OTP_HW_REGION | OTP_SW_REGION))) {
rc = -1;
goto out;
}
/* Read the whole otp so we can easily manipulate it */
lim = hndotp_size(oh);
rawotp = kmalloc(lim, GFP_ATOMIC);
if (rawotp == NULL) {
rc = -2;
goto out;
}
for (i = 0; i < (int)(lim / 2); i++)
rawotp[i] = hndotp_otpr(oh, cc, i);
if ((st & OTP_HW_REGION) == 0) {
/* This could be a programming failure in the first
* chunk followed by one or more good chunks
*/
for (i = 0; i < (int)(lim / 2); i++)
if (rawotp[i] == OTP_MAGIC)
break;
if (i < (int)(lim / 2)) {
base = i;
bound = (i * 2) + rawotp[i + 1];
} else {
rc = -3;
goto out;
}
} else {
bound = rawotp[(lim / 2) + OTP_BOUNDARY_OFF];
/* There are two cases: 1) The whole otp is used as nvram
* and 2) There is a hardware header followed by nvram.
*/
if (rawotp[0] == OTP_MAGIC) {
base = 0;
} else
base = bound;
}
/* Find and copy the data */
chunk = 0;
gchunks = 0;
i = base / 2;
offset = 0;
while ((i < (int)(lim / 2)) && (rawotp[i] == OTP_MAGIC)) {
int dsz, rsz = rawotp[i + 1];
if (((i * 2) + rsz) >= (int)lim) {
/* Bad length, try to find another chunk anyway */
rsz = 6;
}
if (hndcrc16((u8 *) &rawotp[i], rsz,
CRC16_INIT_VALUE) == CRC16_GOOD_VALUE) {
/* Good crc, copy the vars */
gchunks++;
dsz = rsz - 6;
tsz += dsz;
if (offset + dsz >= *len) {
goto out;
}
bcopy((char *)&rawotp[i + 2], &data[offset], dsz);
offset += dsz;
/* Remove extra null characters at the end */
while (offset > 1 &&
data[offset - 1] == 0 && data[offset - 2] == 0)
offset--;
i += rsz / 2;
} else {
/* bad length or crc didn't check, try to find the next set */
if (rawotp[i + (rsz / 2)] == OTP_MAGIC) {
/* Assume length is good */
i += rsz / 2;
} else {
while (++i < (int)(lim / 2))
if (rawotp[i] == OTP_MAGIC)
break;
}
}
chunk++;
}
*len = offset;
out:
if (rawotp)
kfree(rawotp);
si_setcoreidx(oi->sih, idx);
return rc;
}
static otp_fn_t hndotp_fn = {
(otp_size_t) hndotp_size,
(otp_read_bit_t) hndotp_read_bit,
(otp_init_t) hndotp_init,
(otp_read_region_t) hndotp_read_region,
(otp_nvread_t) hndotp_nvread,
(otp_status_t) hndotp_status
};
#endif /* BCMHNDOTP */
/*
* Common Code: Compiled for IPX / HND / AUTO
* otp_status()
* otp_size()
* otp_read_bit()
* otp_init()
* otp_read_region()
* otp_nvread()
*/
int otp_status(void *oh)
{
otpinfo_t *oi = (otpinfo_t *) oh;
return oi->fn->status(oh);
}
int otp_size(void *oh)
{
otpinfo_t *oi = (otpinfo_t *) oh;
return oi->fn->size(oh);
}
u16 otp_read_bit(void *oh, uint offset)
{
otpinfo_t *oi = (otpinfo_t *) oh;
uint idx = si_coreidx(oi->sih);
chipcregs_t *cc = si_setcoreidx(oi->sih, SI_CC_IDX);
u16 readBit = (u16) oi->fn->read_bit(oh, cc, offset);
si_setcoreidx(oi->sih, idx);
return readBit;
}
void *otp_init(si_t *sih)
{
otpinfo_t *oi;
void *ret = NULL;
oi = &otpinfo;
bzero(oi, sizeof(otpinfo_t));
oi->ccrev = sih->ccrev;
#ifdef BCMIPXOTP
if (OTPTYPE_IPX(oi->ccrev))
oi->fn = &ipxotp_fn;
#endif
#ifdef BCMHNDOTP
if (OTPTYPE_HND(oi->ccrev))
oi->fn = &hndotp_fn;
#endif
if (oi->fn == NULL) {
return NULL;
}
oi->sih = sih;
oi->osh = si_osh(oi->sih);
ret = (oi->fn->init) (sih);
return ret;
}
int
otp_read_region(si_t *sih, int region, u16 *data,
uint *wlen) {
bool wasup = false;
void *oh;
int err = 0;
wasup = si_is_otp_powered(sih);
if (!wasup)
si_otp_power(sih, true);
if (!si_is_otp_powered(sih) || si_is_otp_disabled(sih)) {
err = BCME_NOTREADY;
goto out;
}
oh = otp_init(sih);
if (oh == NULL) {
err = BCME_ERROR;
goto out;
}
err = (((otpinfo_t *) oh)->fn->read_region) (oh, region, data, wlen);
out:
if (!wasup)
si_otp_power(sih, false);
return err;
}
int otp_nvread(void *oh, char *data, uint *len)
{
otpinfo_t *oi = (otpinfo_t *) oh;
return oi->fn->nvread(oh, data, len);
}
|