git.sur5r.net Git - openocd/blob - src/flash/nor/kinetis.c

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Mathias Kuester                                 *
   3  *   kesmtp@freenet.de                                                     *
   4  *                                                                         *
   5  *   Copyright (C) 2011 sleep(5) ltd                                       *
   6  *   tomas@sleepfive.com                                                   *
   7  *                                                                         *
   8  *   Copyright (C) 2012 by Christopher D. Kilgour                          *
   9  *   techie at whiterocker.com                                             *
  10  *                                                                         *
  11  *   Copyright (C) 2013 Nemui Trinomius                                    *
  12  *   nemuisan_kawausogasuki@live.jp                                        *
  13  *                                                                         *
  14  *   This program is free software; you can redistribute it and/or modify  *
  15  *   it under the terms of the GNU General Public License as published by  *
  16  *   the Free Software Foundation; either version 2 of the License, or     *
  17  *   (at your option) any later version.                                   *
  18  *                                                                         *
  19  *   This program is distributed in the hope that it will be useful,       *
  20  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  21  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  22  *   GNU General Public License for more details.                          *
  23  *                                                                         *
  24  *   You should have received a copy of the GNU General Public License     *
  25  *   along with this program; if not, write to the                         *
  26  *   Free Software Foundation, Inc.,                                       *
  27  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  28  ***************************************************************************/
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34 #include "imp.h"
  35 #include <helper/binarybuffer.h>
  36 #include <target/algorithm.h>
  37 #include <target/armv7m.h>
  38
  39 /*
  40  * Implementation Notes
  41  *
  42  * The persistent memories in the Kinetis chip families K10 through
  43  * K70 are all manipulated with the Flash Memory Module.  Some
  44  * variants call this module the FTFE, others call it the FTFL.  To
  45  * indicate that both are considered here, we use FTFX.
  46  *
  47  * Within the module, according to the chip variant, the persistent
  48  * memory is divided into what Freescale terms Program Flash, FlexNVM,
  49  * and FlexRAM.  All chip variants have Program Flash.  Some chip
  50  * variants also have FlexNVM and FlexRAM, which always appear
  51  * together.
  52  *
  53  * A given Kinetis chip may have 2 or 4 blocks of flash.  Here we map
  54  * each block to a separate bank.  Each block size varies by chip and
  55  * may be determined by the read-only SIM_FCFG1 register.  The sector
  56  * size within each bank/block varies by the chip granularity as
  57  * described below.
  58  *
  59  * Kinetis offers four different of flash granularities applicable
  60  * across the chip families.  The granularity is apparently reflected
  61  * by at least the reference manual suffix.  For example, for chip
  62  * MK60FN1M0VLQ12, reference manual K60P144M150SF3RM ends in "SF3RM",
  63  * where the "3" indicates there are four flash blocks with 4kiB
  64  * sectors.  All possible granularities are indicated below.
  65  *
  66  * The first half of the flash (1 or 2 blocks, depending on the
  67  * granularity) is always Program Flash and always starts at address
  68  * 0x00000000.  The "PFLSH" flag, bit 23 of the read-only SIM_FCFG2
  69  * register, determines whether the second half of the flash is also
  70  * Program Flash or FlexNVM+FlexRAM.  When PFLSH is set, the second
  71  * half of flash is Program Flash and is contiguous in the memory map
  72  * from the first half.  When PFLSH is clear, the second half of flash
  73  * is FlexNVM and always starts at address 0x10000000.  FlexRAM, which
  74  * is also present when PFLSH is clear, always starts at address
  75  * 0x14000000.
  76  *
  77  * The Flash Memory Module provides a register set where flash
  78  * commands are loaded to perform flash operations like erase and
  79  * program.  Different commands are available depending on whether
  80  * Program Flash or FlexNVM/FlexRAM is being manipulated.  Although
  81  * the commands used are quite consistent between flash blocks, the
  82  * parameters they accept differ according to the flash granularity.
  83  * Some Kinetis chips have different granularity between Program Flash
  84  * and FlexNVM/FlexRAM, so flash command arguments may differ between
  85  * blocks in the same chip.
  86  *
  87  */
  88
  89 const struct {
  90         unsigned pflash_sector_size_bytes;
  91         unsigned nvm_sector_size_bytes;
  92         unsigned num_blocks;
  93 } kinetis_flash_params[4] = {
  94         { 1<<10, 1<<10, 2 },
  95         { 2<<10, 1<<10, 2 },
  96         { 2<<10, 2<<10, 2 },
  97         { 4<<10, 4<<10, 4 }
  98 };
  99
 100 /* Addressess */
 101 #define FLEXRAM         0x14000000
 102 #define FTFx_FSTAT      0x40020000
 103 #define FTFx_FCNFG      0x40020001
 104 #define FTFx_FCCOB3     0x40020004
 105 #define FTFx_FPROT3     0x40020010
 106 #define SIM_SDID        0x40048024
 107 #define SIM_FCFG1       0x4004804c
 108 #define SIM_FCFG2       0x40048050
 109
 110 /* Commands */
 111 #define FTFx_CMD_BLOCKSTAT  0x00
 112 #define FTFx_CMD_SECTSTAT   0x01
 113 #define FTFx_CMD_LWORDPROG  0x06
 114 #define FTFx_CMD_SECTERASE  0x09
 115 #define FTFx_CMD_SECTWRITE  0x0b
 116 #define FTFx_CMD_SETFLEXRAM 0x81
 117 #define FTFx_CMD_MASSERASE  0x44
 118
 119 /* The Kinetis K series uses the following SDID layout :
 120  * Bit 31-16 : 0
 121  * Bit 15-12 : REVID
 122  * Bit 11-7  : DIEID
 123  * Bit 6-4   : FAMID
 124  * Bit 3-0   : PINID
 125  *
 126  * The Kinetis KL series uses the following SDID layout :
 127  * Bit 31-28 : FAMID
 128  * Bit 27-24 : SUBFAMID
 129  * Bit 23-20 : SERIESID
 130  * Bit 19-16 : SRAMSIZE
 131  * Bit 15-12 : REVID
 132  * Bit 6-4   : Reserved (0)
 133  * Bit 3-0   : PINID
 134  *
 135  * SERIESID should be 1 for the KL-series so we assume that if
 136  * bits 31-16 are 0 then it's a K-series MCU.
 137  */
 138
 139 #define KINETIS_SDID_K_SERIES_MASK  0x0000FFFF
 140
 141 #define KINETIS_SDID_DIEID_MASK 0x00000F80
 142 #define KINETIS_SDID_DIEID_K_A  0x00000100
 143 #define KINETIS_SDID_DIEID_K_B  0x00000200
 144 #define KINETIS_SDID_DIEID_KL   0x00000000
 145
 146 /* We can't rely solely on the FAMID field to determine the MCU
 147  * type since some FAMID values identify multiple MCUs with
 148  * different flash sector sizes (K20 and K22 for instance).
 149  * Therefore we combine it with the DIEID bits which may possibly
 150  * break if Freescale bumps the DIEID for a particular MCU. */
 151 #define KINETIS_K_SDID_TYPE_MASK 0x00000FF0
 152 #define KINETIS_K_SDID_K10  0x00000000
 153 #define KINETIS_K_SDID_K11  0x00000220
 154 #define KINETIS_K_SDID_K12  0x00000200
 155 #define KINETIS_K_SDID_K20  0x00000290
 156 #define KINETIS_K_SDID_K21  0x00000230
 157 #define KINETIS_K_SDID_K22  0x00000210
 158 #define KINETIS_K_SDID_K30  0x00000120
 159 #define KINETIS_K_SDID_K40  0x00000130
 160 #define KINETIS_K_SDID_K50  0x000000E0
 161 #define KINETIS_K_SDID_K51  0x000000F0
 162 #define KINETIS_K_SDID_K53  0x00000170
 163 #define KINETIS_K_SDID_K60  0x000001C0
 164 #define KINETIS_K_SDID_K70  0x000001D0
 165
 166 #define KINETIS_KL_SDID_SERIESID_MASK 0x00F00000
 167 #define KINETIS_KL_SDID_SERIESID_KL   0x00100000
 168
 169 struct kinetis_flash_bank {
 170         unsigned granularity;
 171         unsigned bank_ordinal;
 172         uint32_t sector_size;
 173         uint32_t protection_size;
 174         uint32_t klxx;
 175
 176         uint32_t sim_sdid;
 177         uint32_t sim_fcfg1;
 178         uint32_t sim_fcfg2;
 179
 180         enum {
 181                 FC_AUTO = 0,
 182                 FC_PFLASH,
 183                 FC_FLEX_NVM,
 184                 FC_FLEX_RAM,
 185         } flash_class;
 186 };
 187
 188 FLASH_BANK_COMMAND_HANDLER(kinetis_flash_bank_command)
 189 {
 190         struct kinetis_flash_bank *bank_info;
 191
 192         if (CMD_ARGC < 6)
 193                 return ERROR_COMMAND_SYNTAX_ERROR;
 194
 195         LOG_INFO("add flash_bank kinetis %s", bank->name);
 196
 197         bank_info = malloc(sizeof(struct kinetis_flash_bank));
 198
 199         memset(bank_info, 0, sizeof(struct kinetis_flash_bank));
 200
 201         bank->driver_priv = bank_info;
 202
 203         return ERROR_OK;
 204 }
 205
 206 /* Kinetis Program-LongWord Microcodes */
 207 static const uint8_t kinetis_flash_write_code[] = {
 208         /* Params:
 209          * r0 - workarea buffer
 210         * r1 - target address
 211         * r2 - wordcount
 212         * Clobbered:
 213         * r4 - tmp
 214         * r5 - tmp
 215         * r6 - tmp
 216         * r7 - tmp
 217         */
 218
 219                                                         /* .L1: */
 220                                                 /* for(register uint32_t i=0;i<wcount;i++){ */
 221         0x04, 0x1C,                                     /* mov    r4, r0          */
 222         0x00, 0x23,                                     /* mov    r3, #0          */
 223                                                         /* .L2: */
 224         0x0E, 0x1A,                                     /* sub    r6, r1, r0      */
 225         0xA6, 0x19,                                     /* add    r6, r4, r6      */
 226         0x93, 0x42,                                     /* cmp    r3, r2          */
 227         0x16, 0xD0,                                     /* beq    .L9             */
 228                                                         /* .L5: */
 229                                                 /* while((FTFx_FSTAT&FTFA_FSTAT_CCIF_MASK) != FTFA_FSTAT_CCIF_MASK){}; */
 230         0x0B, 0x4D,                                     /* ldr    r5, .L10        */
 231         0x2F, 0x78,                                     /* ldrb   r7, [r5]        */
 232         0x7F, 0xB2,                                     /* sxtb   r7, r7          */
 233         0x00, 0x2F,                                     /* cmp    r7, #0          */
 234         0xFA, 0xDA,                                     /* bge    .L5             */
 235                                                 /* FTFx_FSTAT = FTFA_FSTAT_ACCERR_MASK|FTFA_FSTAT_FPVIOL_MASK|FTFA_FSTAT_RDCO */
 236         0x70, 0x27,                                     /* mov    r7, #112        */
 237         0x2F, 0x70,                                     /* strb   r7, [r5]        */
 238                                                 /* FTFx_FCCOB3 = faddr; */
 239         0x09, 0x4F,                                     /* ldr    r7, .L10+4      */
 240         0x3E, 0x60,                                     /* str    r6, [r7]        */
 241         0x06, 0x27,                                     /* mov    r7, #6          */
 242                                                 /* FTFx_FCCOB0 = 0x06;  */
 243         0x08, 0x4E,                                     /* ldr    r6, .L10+8      */
 244         0x37, 0x70,                                     /* strb   r7, [r6]        */
 245                                                 /* FTFx_FCCOB7 = *pLW;  */
 246         0x80, 0xCC,                                     /* ldmia  r4!, {r7}       */
 247         0x08, 0x4E,                                     /* ldr    r6, .L10+12     */
 248         0x37, 0x60,                                     /* str    r7, [r6]        */
 249                                                 /* FTFx_FSTAT = FTFA_FSTAT_CCIF_MASK; */
 250         0x80, 0x27,                                     /* mov    r7, #128        */
 251         0x2F, 0x70,                                     /* strb   r7, [r5]        */
 252                                                         /* .L4: */
 253                                                 /* while((FTFx_FSTAT&FTFA_FSTAT_CCIF_MASK) != FTFA_FSTAT_CCIF_MASK){}; */
 254         0x2E, 0x78,                                     /* ldrb    r6, [r5]       */
 255         0x77, 0xB2,                                     /* sxtb    r7, r6         */
 256         0x00, 0x2F,                                     /* cmp     r7, #0         */
 257         0xFB, 0xDA,                                     /* bge     .L4            */
 258         0x01, 0x33,                                     /* add     r3, r3, #1     */
 259         0xE4, 0xE7,                                     /* b       .L2            */
 260                                                         /* .L9: */
 261         0x00, 0xBE,                                     /* bkpt #0                */
 262                                                         /* .L10: */
 263         0x00, 0x00, 0x02, 0x40,         /* .word    1073872896    */
 264         0x04, 0x00, 0x02, 0x40,         /* .word    1073872900    */
 265         0x07, 0x00, 0x02, 0x40,         /* .word    1073872903    */
 266         0x08, 0x00, 0x02, 0x40,         /* .word    1073872904    */
 267 };
 268
 269 /* Program LongWord Block Write */
 270 static int kinetis_write_block(struct flash_bank *bank, uint8_t *buffer,
 271                 uint32_t offset, uint32_t wcount)
 272 {
 273         struct target *target = bank->target;
 274         uint32_t buffer_size = 2048;            /* Default minimum value */
 275         struct working_area *write_algorithm;
 276         struct working_area *source;
 277         uint32_t address = bank->base + offset;
 278         struct reg_param reg_params[3];
 279         struct armv7m_algorithm armv7m_info;
 280         int retval = ERROR_OK;
 281
 282         /* Params:
 283          * r0 - workarea buffer
 284          * r1 - target address
 285          * r2 - wordcount
 286          * Clobbered:
 287          * r4 - tmp
 288          * r5 - tmp
 289          * r6 - tmp
 290          * r7 - tmp
 291          */
 292
 293         /* Increase buffer_size if needed */
 294         if (buffer_size < (target->working_area_size/2))
 295                 buffer_size = (target->working_area_size/2);
 296
 297         LOG_INFO("Kinetis: FLASH Write ...");
 298
 299         /* check code alignment */
 300         if (offset & 0x1) {
 301                 LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset);
 302                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 303         }
 304
 305         /* allocate working area with flash programming code */
 306         if (target_alloc_working_area(target, sizeof(kinetis_flash_write_code),
 307                         &write_algorithm) != ERROR_OK) {
 308                 LOG_WARNING("no working area available, can't do block memory writes");
 309                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 310         }
 311
 312         retval = target_write_buffer(target, write_algorithm->address,
 313                 sizeof(kinetis_flash_write_code), kinetis_flash_write_code);
 314         if (retval != ERROR_OK)
 315                 return retval;
 316
 317         /* memory buffer */
 318         while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK) {
 319                 buffer_size /= 4;
 320                 if (buffer_size <= 256) {
 321                         /* free working area, write algorithm already allocated */
 322                         target_free_working_area(target, write_algorithm);
 323
 324                         LOG_WARNING("No large enough working area available, can't do block memory writes");
 325                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 326                 }
 327         }
 328
 329         armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
 330         armv7m_info.core_mode = ARM_MODE_THREAD;
 331
 332         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT); /* *pLW (*buffer) */
 333         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT); /* faddr */
 334         init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT); /* number of words to program */
 335
 336         /* write code buffer and use Flash programming code within kinetis       */
 337         /* Set breakpoint to 0 with time-out of 1000 ms                          */
 338         while (wcount > 0) {
 339                 uint32_t thisrun_count = (wcount > (buffer_size / 4)) ? (buffer_size / 4) : wcount;
 340
 341                 retval = target_write_buffer(target, write_algorithm->address, 8,
 342                                 kinetis_flash_write_code);
 343                 if (retval != ERROR_OK)
 344                         break;
 345
 346                 retval = target_write_buffer(target, source->address, thisrun_count * 4, buffer);
 347                 if (retval != ERROR_OK)
 348                         break;
 349
 350                 buf_set_u32(reg_params[0].value, 0, 32, source->address);
 351                 buf_set_u32(reg_params[1].value, 0, 32, address);
 352                 buf_set_u32(reg_params[2].value, 0, 32, thisrun_count);
 353
 354                 retval = target_run_algorithm(target, 0, NULL, 3, reg_params,
 355                                 write_algorithm->address, 0, 100000, &armv7m_info);
 356                 if (retval != ERROR_OK) {
 357                         LOG_ERROR("Error executing kinetis Flash programming algorithm");
 358                         retval = ERROR_FLASH_OPERATION_FAILED;
 359                         break;
 360                 }
 361
 362                 buffer += thisrun_count * 4;
 363                 address += thisrun_count * 4;
 364                 wcount -= thisrun_count;
 365         }
 366
 367         target_free_working_area(target, source);
 368         target_free_working_area(target, write_algorithm);
 369
 370         destroy_reg_param(&reg_params[0]);
 371         destroy_reg_param(&reg_params[1]);
 372         destroy_reg_param(&reg_params[2]);
 373
 374         return retval;
 375 }
 376
 377 static int kinetis_protect(struct flash_bank *bank, int set, int first, int last)
 378 {
 379         LOG_WARNING("kinetis_protect not supported yet");
 380         /* FIXME: TODO */
 381
 382         if (bank->target->state != TARGET_HALTED) {
 383                 LOG_ERROR("Target not halted");
 384                 return ERROR_TARGET_NOT_HALTED;
 385         }
 386
 387         return ERROR_FLASH_BANK_INVALID;
 388 }
 389
 390 static int kinetis_protect_check(struct flash_bank *bank)
 391 {
 392         struct kinetis_flash_bank *kinfo = bank->driver_priv;
 393
 394         if (bank->target->state != TARGET_HALTED) {
 395                 LOG_ERROR("Target not halted");
 396                 return ERROR_TARGET_NOT_HALTED;
 397         }
 398
 399         if (kinfo->flash_class == FC_PFLASH) {
 400                 int result;
 401                 uint8_t buffer[4];
 402                 uint32_t fprot, psec;
 403                 int i, b;
 404
 405                 /* read protection register */
 406                 result = target_read_memory(bank->target, FTFx_FPROT3, 1, 4, buffer);
 407
 408                 if (result != ERROR_OK)
 409                         return result;
 410
 411                 fprot = target_buffer_get_u32(bank->target, buffer);
 412
 413                 /*
 414                  * Every bit protects 1/32 of the full flash (not necessarily
 415                  * just this bank), but we enforce the bank ordinals for
 416                  * PFlash to start at zero.
 417                  */
 418                 b = kinfo->bank_ordinal * (bank->size / kinfo->protection_size);
 419                 for (psec = 0, i = 0; i < bank->num_sectors; i++) {
 420                         if ((fprot >> b) & 1)
 421                                 bank->sectors[i].is_protected = 0;
 422                         else
 423                                 bank->sectors[i].is_protected = 1;
 424
 425                         psec += bank->sectors[i].size;
 426
 427                         if (psec >= kinfo->protection_size) {
 428                                 psec = 0;
 429                                 b++;
 430                         }
 431                 }
 432         } else {
 433                 LOG_ERROR("Protection checks for FlexNVM not yet supported");
 434                 return ERROR_FLASH_BANK_INVALID;
 435         }
 436
 437         return ERROR_OK;
 438 }
 439
 440 static int kinetis_ftfx_command(struct flash_bank *bank, uint8_t fcmd, uint32_t faddr,
 441                                 uint8_t fccob4, uint8_t fccob5, uint8_t fccob6, uint8_t fccob7,
 442                                 uint8_t fccob8, uint8_t fccob9, uint8_t fccoba, uint8_t fccobb,
 443                                 uint8_t *ftfx_fstat)
 444 {
 445         uint8_t command[12] = {faddr & 0xff, (faddr >> 8) & 0xff, (faddr >> 16) & 0xff, fcmd,
 446                         fccob7, fccob6, fccob5, fccob4,
 447                         fccobb, fccoba, fccob9, fccob8};
 448         int result, i;
 449         uint8_t buffer;
 450
 451         /* wait for done */
 452         for (i = 0; i < 50; i++) {
 453                 result =
 454                         target_read_memory(bank->target, FTFx_FSTAT, 1, 1, &buffer);
 455
 456                 if (result != ERROR_OK)
 457                         return result;
 458
 459                 if (buffer & 0x80)
 460                         break;
 461
 462                 buffer = 0x00;
 463         }
 464
 465         if (buffer != 0x80) {
 466                 /* reset error flags */
 467                 buffer = 0x30;
 468                 result =
 469                         target_write_memory(bank->target, FTFx_FSTAT, 1, 1, &buffer);
 470                 if (result != ERROR_OK)
 471                         return result;
 472         }
 473
 474         result = target_write_memory(bank->target, FTFx_FCCOB3, 4, 3, command);
 475
 476         if (result != ERROR_OK)
 477                 return result;
 478
 479         /* start command */
 480         buffer = 0x80;
 481         result = target_write_memory(bank->target, FTFx_FSTAT, 1, 1, &buffer);
 482         if (result != ERROR_OK)
 483                 return result;
 484
 485         /* wait for done */
 486         for (i = 0; i < 240; i++) { /* Need Entire Erase Nemui Changed */
 487                 result =
 488                         target_read_memory(bank->target, FTFx_FSTAT, 1, 1, ftfx_fstat);
 489
 490                 if (result != ERROR_OK)
 491                         return result;
 492
 493                 if (*ftfx_fstat & 0x80)
 494                         break;
 495         }
 496
 497         if ((*ftfx_fstat & 0xf0) != 0x80) {
 498                 LOG_ERROR
 499                         ("ftfx command failed FSTAT: %02X FCCOB: %02X%02X%02X%02X %02X%02X%02X%02X %02X%02X%02X%02X",
 500                          *ftfx_fstat, command[3], command[2], command[1], command[0],
 501                          command[7], command[6], command[5], command[4],
 502                          command[11], command[10], command[9], command[8]);
 503                 return ERROR_FLASH_OPERATION_FAILED;
 504         }
 505
 506         return ERROR_OK;
 507 }
 508
 509 static int kinetis_mass_erase(struct flash_bank *bank)
 510 {
 511         int result;
 512         uint8_t ftfx_fstat;
 513
 514         if (bank->target->state != TARGET_HALTED) {
 515                 LOG_ERROR("Target not halted");
 516                 return ERROR_TARGET_NOT_HALTED;
 517         }
 518
 519         /* check if whole bank is blank */
 520         LOG_INFO("Kinetis L Series Erase All Blocks");
 521         /* set command and sector address */
 522         result = kinetis_ftfx_command(bank, FTFx_CMD_MASSERASE, 0,
 523                         0, 0, 0, 0,  0, 0, 0, 0,  &ftfx_fstat);
 524         /* Anyway Result, write unsecure byte */
 525         /*      if (result != ERROR_OK)
 526                 return result;*/
 527
 528         /* Write to MCU security status unsecure in Flash security byte(Work around) */
 529         LOG_INFO("Write to MCU security status unsecure Anyway!");
 530         uint8_t padding[4] = {0xFE, 0xFF, 0xFF, 0xFF}; /* Write 0xFFFFFFFE */
 531
 532         result = kinetis_ftfx_command(bank, FTFx_CMD_LWORDPROG, (bank->base + 0x0000040C),
 533                                 padding[3], padding[2], padding[1], padding[0],
 534                                 0, 0, 0, 0,  &ftfx_fstat);
 535         if (result != ERROR_OK)
 536                 return ERROR_FLASH_OPERATION_FAILED;
 537
 538         return ERROR_OK;
 539 }
 540
 541 static int kinetis_erase(struct flash_bank *bank, int first, int last)
 542 {
 543         int result, i;
 544         struct kinetis_flash_bank *kinfo = bank->driver_priv;
 545
 546         if (bank->target->state != TARGET_HALTED) {
 547                 LOG_ERROR("Target not halted");
 548                 return ERROR_TARGET_NOT_HALTED;
 549         }
 550
 551         if ((first > bank->num_sectors) || (last > bank->num_sectors))
 552                 return ERROR_FLASH_OPERATION_FAILED;
 553
 554         if ((first == 0) && (last == (bank->num_sectors - 1)) && (kinfo->klxx))
 555                 return kinetis_mass_erase(bank);
 556
 557         /*
 558          * FIXME: TODO: use the 'Erase Flash Block' command if the
 559          * requested erase is PFlash or NVM and encompasses the entire
 560          * block.  Should be quicker.
 561          */
 562         for (i = first; i <= last; i++) {
 563                 uint8_t ftfx_fstat;
 564                 /* set command and sector address */
 565                 result = kinetis_ftfx_command(bank, FTFx_CMD_SECTERASE, bank->base + bank->sectors[i].offset,
 566                                 0, 0, 0, 0,  0, 0, 0, 0,  &ftfx_fstat);
 567
 568                 if (result != ERROR_OK) {
 569                         LOG_WARNING("erase sector %d failed", i);
 570                         return ERROR_FLASH_OPERATION_FAILED;
 571                 }
 572
 573                 bank->sectors[i].is_erased = 1;
 574         }
 575
 576         if (first == 0) {
 577                 LOG_WARNING
 578                         ("flash configuration field erased, please reset the device");
 579         }
 580
 581         return ERROR_OK;
 582 }
 583
 584 static int kinetis_write(struct flash_bank *bank, uint8_t *buffer,
 585                          uint32_t offset, uint32_t count)
 586 {
 587         unsigned int i, result, fallback = 0;
 588         uint8_t buf[8];
 589         uint32_t wc;
 590         struct kinetis_flash_bank *kinfo = bank->driver_priv;
 591         uint8_t *new_buffer = NULL;
 592
 593         if (bank->target->state != TARGET_HALTED) {
 594                 LOG_ERROR("Target not halted");
 595                 return ERROR_TARGET_NOT_HALTED;
 596         }
 597
 598         if (kinfo->klxx) {
 599                 /* fallback to longword write */
 600                 fallback = 1;
 601                 LOG_WARNING("Kinetis L Series supports Program Longword execution only.");
 602                 LOG_DEBUG("flash write into PFLASH @08%" PRIX32, offset);
 603
 604         } else if (kinfo->flash_class == FC_FLEX_NVM) {
 605                 uint8_t ftfx_fstat;
 606
 607                 LOG_DEBUG("flash write into FlexNVM @%08" PRIX32, offset);
 608
 609                 /* make flex ram available */
 610                 result = kinetis_ftfx_command(bank, FTFx_CMD_SETFLEXRAM, 0x00ff0000, 0, 0, 0, 0,  0, 0, 0, 0,  &ftfx_fstat);
 611
 612                 if (result != ERROR_OK)
 613                         return ERROR_FLASH_OPERATION_FAILED;
 614
 615                 /* check if ram ready */
 616                 result = target_read_memory(bank->target, FTFx_FCNFG, 1, 1, buf);
 617
 618                 if (result != ERROR_OK)
 619                         return result;
 620
 621                 if (!(buf[0] & (1 << 1))) {
 622                         /* fallback to longword write */
 623                         fallback = 1;
 624
 625                         LOG_WARNING("ram not ready, fallback to slow longword write (FCNFG: %02X)", buf[0]);
 626                 }
 627         } else {
 628                 LOG_DEBUG("flash write into PFLASH @08%" PRIX32, offset);
 629         }
 630
 631
 632         /* program section command */
 633         if (fallback == 0) {
 634                 /*
 635                  * Kinetis uses different terms for the granularity of
 636                  * sector writes, e.g. "phrase" or "128 bits".  We use
 637                  * the generic term "chunk". The largest possible
 638                  * Kinetis "chunk" is 16 bytes (128 bits).
 639                  */
 640                 unsigned prog_section_chunk_bytes = kinfo->sector_size >> 8;
 641                 /* assume the NVM sector size is half the FlexRAM size */
 642                 unsigned prog_size_bytes = MIN(kinfo->sector_size,
 643                                 kinetis_flash_params[kinfo->granularity].nvm_sector_size_bytes);
 644                 for (i = 0; i < count; i += prog_size_bytes) {
 645                         uint8_t residual_buffer[16];
 646                         uint8_t ftfx_fstat;
 647                         uint32_t section_count = prog_size_bytes / prog_section_chunk_bytes;
 648                         uint32_t residual_wc = 0;
 649
 650                         /*
 651                          * Assume the word count covers an entire
 652                          * sector.
 653                          */
 654                         wc = prog_size_bytes / 4;
 655
 656                         /*
 657                          * If bytes to be programmed are less than the
 658                          * full sector, then determine the number of
 659                          * full-words to program, and put together the
 660                          * residual buffer so that a full "section"
 661                          * may always be programmed.
 662                          */
 663                         if ((count - i) < prog_size_bytes) {
 664                                 /* number of bytes to program beyond full section */
 665                                 unsigned residual_bc = (count-i) % prog_section_chunk_bytes;
 666
 667                                 /* number of complete words to copy directly from buffer */
 668                                 wc = (count - i) / 4;
 669
 670                                 /* number of total sections to write, including residual */
 671                                 section_count = DIV_ROUND_UP((count-i), prog_section_chunk_bytes);
 672
 673                                 /* any residual bytes delivers a whole residual section */
 674                                 residual_wc = (residual_bc ? prog_section_chunk_bytes : 0)/4;
 675
 676                                 /* clear residual buffer then populate residual bytes */
 677                                 (void) memset(residual_buffer, 0xff, prog_section_chunk_bytes);
 678                                 (void) memcpy(residual_buffer, &buffer[i+4*wc], residual_bc);
 679                         }
 680
 681                         LOG_DEBUG("write section @ %08" PRIX32 " with length %" PRIu32 " bytes",
 682                                   offset + i, (uint32_t)wc*4);
 683
 684                         /* write data to flexram as whole-words */
 685                         result = target_write_memory(bank->target, FLEXRAM, 4, wc,
 686                                         buffer + i);
 687
 688                         if (result != ERROR_OK) {
 689                                 LOG_ERROR("target_write_memory failed");
 690                                 return result;
 691                         }
 692
 693                         /* write the residual words to the flexram */
 694                         if (residual_wc) {
 695                                 result = target_write_memory(bank->target,
 696                                                 FLEXRAM+4*wc,
 697                                                 4, residual_wc,
 698                                                 residual_buffer);
 699
 700                                 if (result != ERROR_OK) {
 701                                         LOG_ERROR("target_write_memory failed");
 702                                         return result;
 703                                 }
 704                         }
 705
 706                         /* execute section-write command */
 707                         result = kinetis_ftfx_command(bank, FTFx_CMD_SECTWRITE, bank->base + offset + i,
 708                                         section_count>>8, section_count, 0, 0,
 709                                         0, 0, 0, 0,  &ftfx_fstat);
 710
 711                         if (result != ERROR_OK)
 712                                 return ERROR_FLASH_OPERATION_FAILED;
 713                 }
 714         }
 715         /* program longword command, not supported in "SF3" devices */
 716         else if ((kinfo->granularity != 3) || (kinfo->klxx)) {
 717
 718                 if (count & 0x3) {
 719                         uint32_t old_count = count;
 720                         count = (old_count | 3) + 1;
 721                         new_buffer = malloc(count);
 722                         if (new_buffer == NULL) {
 723                                 LOG_ERROR("odd number of bytes to write and no memory "
 724                                         "for padding buffer");
 725                                 return ERROR_FAIL;
 726                         }
 727                         LOG_INFO("odd number of bytes to write (%" PRIu32 "), extending to %" PRIu32 " "
 728                                 "and padding with 0xff", old_count, count);
 729                         memset(buffer, 0xff, count);
 730                         buffer = memcpy(new_buffer, buffer, old_count);
 731                 }
 732
 733                 uint32_t words_remaining = count / 4;
 734
 735                 /* try using a block write */
 736                 int retval = kinetis_write_block(bank, buffer, offset, words_remaining);
 737
 738                 if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
 739                         /* if block write failed (no sufficient working area),
 740                          * we use normal (slow) single word accesses */
 741                         LOG_WARNING("couldn't use block writes, falling back to single "
 742                                 "memory accesses");
 743
 744                         for (i = 0; i < count; i += 4) {
 745                                 uint8_t ftfx_fstat;
 746
 747                                 LOG_DEBUG("write longword @ %08" PRIX32, (uint32_t)(offset + i));
 748
 749                                 uint8_t padding[4] = {0xff, 0xff, 0xff, 0xff};
 750                                 memcpy(padding, buffer + i, MIN(4, count-i));
 751
 752                                 result = kinetis_ftfx_command(bank, FTFx_CMD_LWORDPROG, bank->base + offset + i,
 753                                                 padding[3], padding[2], padding[1], padding[0],
 754                                                 0, 0, 0, 0,  &ftfx_fstat);
 755
 756                                 if (result != ERROR_OK)
 757                                         return ERROR_FLASH_OPERATION_FAILED;
 758                         }
 759                 }
 760
 761         } else {
 762                 LOG_ERROR("Flash write strategy not implemented");
 763                 return ERROR_FLASH_OPERATION_FAILED;
 764         }
 765
 766         return ERROR_OK;
 767 }
 768
 769 static int kinetis_read_part_info(struct flash_bank *bank)
 770 {
 771         int result, i;
 772         uint32_t offset = 0;
 773         uint8_t fcfg1_nvmsize, fcfg1_pfsize, fcfg1_eesize, fcfg2_pflsh;
 774         uint32_t nvm_size = 0, pf_size = 0, ee_size = 0;
 775         unsigned granularity, num_blocks = 0, num_pflash_blocks = 0, num_nvm_blocks = 0,
 776                 first_nvm_bank = 0, reassign = 0;
 777         struct target *target = bank->target;
 778         struct kinetis_flash_bank *kinfo = bank->driver_priv;
 779
 780         result = target_read_u32(target, SIM_SDID, &kinfo->sim_sdid);
 781         if (result != ERROR_OK)
 782                 return result;
 783
 784         kinfo->klxx = 0;
 785
 786         /* K-series MCU? */
 787         if ((kinfo->sim_sdid & (~KINETIS_SDID_K_SERIES_MASK)) == 0) {
 788                 uint32_t mcu_type = kinfo->sim_sdid & KINETIS_K_SDID_TYPE_MASK;
 789
 790                 switch (mcu_type) {
 791                 case KINETIS_K_SDID_K20:
 792                         /* 1kB sectors */
 793                         granularity = 0;
 794                         break;
 795                 case KINETIS_K_SDID_K30:
 796                 case KINETIS_K_SDID_K40:
 797                 case KINETIS_K_SDID_K50:
 798                         /* 2kB sectors, 1kB FlexNVM sectors */
 799                         granularity = 1;
 800                         break;
 801                 case KINETIS_K_SDID_K11:
 802                 case KINETIS_K_SDID_K12:
 803                 case KINETIS_K_SDID_K21:
 804                 case KINETIS_K_SDID_K22:
 805                 case KINETIS_K_SDID_K51:
 806                 case KINETIS_K_SDID_K53:
 807                 case KINETIS_K_SDID_K60:
 808                         /* 2kB sectors */
 809                         granularity = 2;
 810                         break;
 811                 case KINETIS_K_SDID_K10:
 812                 case KINETIS_K_SDID_K70:
 813                         /* 4kB sectors */
 814                         granularity = 3;
 815                         break;
 816                 default:
 817                         LOG_ERROR("Unsupported K-family FAMID");
 818                         return ERROR_FLASH_OPER_UNSUPPORTED;
 819                 }
 820         }
 821         /* KL-series? */
 822         else if ((kinfo->sim_sdid & KINETIS_KL_SDID_SERIESID_MASK) == KINETIS_KL_SDID_SERIESID_KL) {
 823                 kinfo->klxx = 1;
 824                 granularity = 0;
 825         } else {
 826                 LOG_ERROR("MCU is unsupported");
 827                 return ERROR_FLASH_OPER_UNSUPPORTED;
 828         }
 829
 830         result = target_read_u32(target, SIM_FCFG1, &kinfo->sim_fcfg1);
 831         if (result != ERROR_OK)
 832                 return result;
 833
 834         result = target_read_u32(target, SIM_FCFG2, &kinfo->sim_fcfg2);
 835         if (result != ERROR_OK)
 836                 return result;
 837         fcfg2_pflsh = (kinfo->sim_fcfg2 >> 23) & 0x01;
 838
 839         LOG_DEBUG("SDID: 0x%08" PRIX32 " FCFG1: 0x%08" PRIX32 " FCFG2: 0x%08" PRIX32, kinfo->sim_sdid,
 840                         kinfo->sim_fcfg1, kinfo->sim_fcfg2);
 841
 842         fcfg1_nvmsize = (uint8_t)((kinfo->sim_fcfg1 >> 28) & 0x0f);
 843         fcfg1_pfsize = (uint8_t)((kinfo->sim_fcfg1 >> 24) & 0x0f);
 844         fcfg1_eesize = (uint8_t)((kinfo->sim_fcfg1 >> 16) & 0x0f);
 845
 846         /* when the PFLSH bit is set, there is no FlexNVM/FlexRAM */
 847         if (!fcfg2_pflsh) {
 848                 switch (fcfg1_nvmsize) {
 849                 case 0x03:
 850                 case 0x07:
 851                 case 0x09:
 852                 case 0x0b:
 853                         nvm_size = 1 << (14 + (fcfg1_nvmsize >> 1));
 854                         break;
 855                 case 0x0f:
 856                         if (granularity == 3)
 857                                 nvm_size = 512<<10;
 858                         else
 859                                 nvm_size = 256<<10;
 860                         break;
 861                 default:
 862                         nvm_size = 0;
 863                         break;
 864                 }
 865
 866                 switch (fcfg1_eesize) {
 867                 case 0x00:
 868                 case 0x01:
 869                 case 0x02:
 870                 case 0x03:
 871                 case 0x04:
 872                 case 0x05:
 873                 case 0x06:
 874                 case 0x07:
 875                 case 0x08:
 876                 case 0x09:
 877                         ee_size = (16 << (10 - fcfg1_eesize));
 878                         break;
 879                 default:
 880                         ee_size = 0;
 881                         break;
 882                 }
 883         }
 884
 885         switch (fcfg1_pfsize) {
 886         case 0x03:
 887         case 0x05:
 888         case 0x07:
 889         case 0x09:
 890         case 0x0b:
 891         case 0x0d:
 892                 pf_size = 1 << (14 + (fcfg1_pfsize >> 1));
 893                 break;
 894         case 0x0f:
 895                 if (granularity == 3)
 896                         pf_size = 1024<<10;
 897                 else if (fcfg2_pflsh)
 898                         pf_size = 512<<10;
 899                 else
 900                         pf_size = 256<<10;
 901                 break;
 902         default:
 903                 pf_size = 0;
 904                 break;
 905         }
 906
 907         LOG_DEBUG("FlexNVM: %" PRIu32 " PFlash: %" PRIu32 " FlexRAM: %" PRIu32 " PFLSH: %d",
 908                   nvm_size, pf_size, ee_size, fcfg2_pflsh);
 909         if (kinfo->klxx)
 910                 num_blocks = 1;
 911         else
 912                 num_blocks = kinetis_flash_params[granularity].num_blocks;
 913
 914         num_pflash_blocks = num_blocks / (2 - fcfg2_pflsh);
 915         first_nvm_bank = num_pflash_blocks;
 916         num_nvm_blocks = num_blocks - num_pflash_blocks;
 917
 918         LOG_DEBUG("%d blocks total: %d PFlash, %d FlexNVM",
 919                         num_blocks, num_pflash_blocks, num_nvm_blocks);
 920
 921         /*
 922          * If the flash class is already assigned, verify the
 923          * parameters.
 924          */
 925         if (kinfo->flash_class != FC_AUTO) {
 926                 if (kinfo->bank_ordinal != (unsigned) bank->bank_number) {
 927                         LOG_WARNING("Flash ordinal/bank number mismatch");
 928                         reassign = 1;
 929                 } else if (kinfo->granularity != granularity) {
 930                         LOG_WARNING("Flash granularity mismatch");
 931                         reassign = 1;
 932                 } else {
 933                         switch (kinfo->flash_class) {
 934                         case FC_PFLASH:
 935                                 if (kinfo->bank_ordinal >= first_nvm_bank) {
 936                                         LOG_WARNING("Class mismatch, bank %d is not PFlash", bank->bank_number);
 937                                         reassign = 1;
 938                                 } else if (bank->size != (pf_size / num_pflash_blocks)) {
 939                                         LOG_WARNING("PFlash size mismatch");
 940                                         reassign = 1;
 941                                 } else if (bank->base !=
 942                                          (0x00000000 + bank->size * kinfo->bank_ordinal)) {
 943                                         LOG_WARNING("PFlash address range mismatch");
 944                                         reassign = 1;
 945                                 } else if (kinfo->sector_size !=
 946                                                 kinetis_flash_params[granularity].pflash_sector_size_bytes) {
 947                                         LOG_WARNING("PFlash sector size mismatch");
 948                                         reassign = 1;
 949                                 } else {
 950                                         LOG_DEBUG("PFlash bank %d already configured okay",
 951                                                   kinfo->bank_ordinal);
 952                                 }
 953                                 break;
 954                         case FC_FLEX_NVM:
 955                                 if ((kinfo->bank_ordinal >= num_blocks) ||
 956                                                 (kinfo->bank_ordinal < first_nvm_bank)) {
 957                                         LOG_WARNING("Class mismatch, bank %d is not FlexNVM", bank->bank_number);
 958                                         reassign = 1;
 959                                 } else if (bank->size != (nvm_size / num_nvm_blocks)) {
 960                                         LOG_WARNING("FlexNVM size mismatch");
 961                                         reassign = 1;
 962                                 } else if (bank->base !=
 963                                                 (0x10000000 + bank->size * kinfo->bank_ordinal)) {
 964                                         LOG_WARNING("FlexNVM address range mismatch");
 965                                         reassign = 1;
 966                                 } else if (kinfo->sector_size !=
 967                                                 kinetis_flash_params[granularity].nvm_sector_size_bytes) {
 968                                         LOG_WARNING("FlexNVM sector size mismatch");
 969                                         reassign = 1;
 970                                 } else {
 971                                         LOG_DEBUG("FlexNVM bank %d already configured okay",
 972                                                   kinfo->bank_ordinal);
 973                                 }
 974                                 break;
 975                         case FC_FLEX_RAM:
 976                                 if (kinfo->bank_ordinal != num_blocks) {
 977                                         LOG_WARNING("Class mismatch, bank %d is not FlexRAM", bank->bank_number);
 978                                         reassign = 1;
 979                                 } else if (bank->size != ee_size) {
 980                                         LOG_WARNING("FlexRAM size mismatch");
 981                                         reassign = 1;
 982                                 } else if (bank->base != FLEXRAM) {
 983                                         LOG_WARNING("FlexRAM address mismatch");
 984                                         reassign = 1;
 985                                 } else if (kinfo->sector_size !=
 986                                          kinetis_flash_params[granularity].nvm_sector_size_bytes) {
 987                                         LOG_WARNING("FlexRAM sector size mismatch");
 988                                         reassign = 1;
 989                                 } else {
 990                                         LOG_DEBUG("FlexRAM bank %d already configured okay", kinfo->bank_ordinal);
 991                                 }
 992                                 break;
 993
 994                         default:
 995                                 LOG_WARNING("Unknown or inconsistent flash class");
 996                                 reassign = 1;
 997                                 break;
 998                         }
 999                 }
1000         } else {
1001                 LOG_INFO("Probing flash info for bank %d", bank->bank_number);
1002                 reassign = 1;
1003         }
1004
1005         if (!reassign)
1006                 return ERROR_OK;
1007
1008         kinfo->granularity = granularity;
1009
1010         if ((unsigned)bank->bank_number < num_pflash_blocks) {
1011                 /* pflash, banks start at address zero */
1012                 kinfo->flash_class = FC_PFLASH;
1013                 bank->size = (pf_size / num_pflash_blocks);
1014                 bank->base = 0x00000000 + bank->size * bank->bank_number;
1015                 kinfo->sector_size = kinetis_flash_params[granularity].pflash_sector_size_bytes;
1016                 kinfo->protection_size = pf_size / 32;
1017         } else if ((unsigned)bank->bank_number < num_blocks) {
1018                 /* nvm, banks start at address 0x10000000 */
1019                 kinfo->flash_class = FC_FLEX_NVM;
1020                 bank->size = (nvm_size / num_nvm_blocks);
1021                 bank->base = 0x10000000 + bank->size * (bank->bank_number - first_nvm_bank);
1022                 kinfo->sector_size = kinetis_flash_params[granularity].nvm_sector_size_bytes;
1023                 kinfo->protection_size = 0; /* FIXME: TODO: depends on DEPART bits, chip */
1024         } else if ((unsigned)bank->bank_number == num_blocks) {
1025                 LOG_ERROR("FlexRAM support not yet implemented");
1026                 return ERROR_FLASH_OPER_UNSUPPORTED;
1027         } else {
1028                 LOG_ERROR("Cannot determine parameters for bank %d, only %d banks on device",
1029                                 bank->bank_number, num_blocks);
1030                 return ERROR_FLASH_BANK_INVALID;
1031         }
1032
1033         if (bank->sectors) {
1034                 free(bank->sectors);
1035                 bank->sectors = NULL;
1036         }
1037
1038         bank->num_sectors = bank->size / kinfo->sector_size;
1039         assert(bank->num_sectors > 0);
1040         bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
1041
1042         for (i = 0; i < bank->num_sectors; i++) {
1043                 bank->sectors[i].offset = offset;
1044                 bank->sectors[i].size = kinfo->sector_size;
1045                 offset += kinfo->sector_size;
1046                 bank->sectors[i].is_erased = -1;
1047                 bank->sectors[i].is_protected = 1;
1048         }
1049
1050         return ERROR_OK;
1051 }
1052
1053 static int kinetis_probe(struct flash_bank *bank)
1054 {
1055         if (bank->target->state != TARGET_HALTED) {
1056                 LOG_WARNING("Cannot communicate... target not halted.");
1057                 return ERROR_TARGET_NOT_HALTED;
1058         }
1059
1060         return kinetis_read_part_info(bank);
1061 }
1062
1063 static int kinetis_auto_probe(struct flash_bank *bank)
1064 {
1065         struct kinetis_flash_bank *kinfo = bank->driver_priv;
1066
1067         if (kinfo->sim_sdid)
1068                 return ERROR_OK;
1069
1070         return kinetis_probe(bank);
1071 }
1072
1073 static int kinetis_info(struct flash_bank *bank, char *buf, int buf_size)
1074 {
1075         const char *bank_class_names[] = {
1076                 "(ANY)", "PFlash", "FlexNVM", "FlexRAM"
1077         };
1078
1079         struct kinetis_flash_bank *kinfo = bank->driver_priv;
1080
1081         (void) snprintf(buf, buf_size,
1082                         "%s driver for %s flash bank %s at 0x%8.8" PRIx32 "",
1083                         bank->driver->name, bank_class_names[kinfo->flash_class],
1084                         bank->name, bank->base);
1085
1086         return ERROR_OK;
1087 }
1088
1089 static int kinetis_blank_check(struct flash_bank *bank)
1090 {
1091         struct kinetis_flash_bank *kinfo = bank->driver_priv;
1092
1093         if (bank->target->state != TARGET_HALTED) {
1094                 LOG_ERROR("Target not halted");
1095                 return ERROR_TARGET_NOT_HALTED;
1096         }
1097
1098         if (kinfo->flash_class == FC_PFLASH) {
1099                 int result;
1100                 uint8_t ftfx_fstat;
1101
1102                 /* check if whole bank is blank */
1103                 result = kinetis_ftfx_command(bank, FTFx_CMD_BLOCKSTAT, bank->base, 0, 0, 0, 0,  0, 0, 0, 0, &ftfx_fstat);
1104
1105                 if (result != ERROR_OK)
1106                         return result;
1107
1108                 if (ftfx_fstat & 0x01) {
1109                         /* the whole bank is not erased, check sector-by-sector */
1110                         int i;
1111                         for (i = 0; i < bank->num_sectors; i++) {
1112                                 /* normal margin */
1113                                 result = kinetis_ftfx_command(bank, FTFx_CMD_SECTSTAT, bank->base + bank->sectors[i].offset,
1114                                                 1, 0, 0, 0,  0, 0, 0, 0, &ftfx_fstat);
1115
1116                                 if (result == ERROR_OK) {
1117                                         bank->sectors[i].is_erased = !(ftfx_fstat & 0x01);
1118                                 } else {
1119                                         LOG_DEBUG("Ignoring errored PFlash sector blank-check");
1120                                         bank->sectors[i].is_erased = -1;
1121                                 }
1122                         }
1123                 } else {
1124                         /* the whole bank is erased, update all sectors */
1125                         int i;
1126                         for (i = 0; i < bank->num_sectors; i++)
1127                                 bank->sectors[i].is_erased = 1;
1128                 }
1129         } else {
1130                 LOG_WARNING("kinetis_blank_check not supported yet for FlexNVM");
1131                 return ERROR_FLASH_OPERATION_FAILED;
1132         }
1133
1134         return ERROR_OK;
1135 }
1136
1137 struct flash_driver kinetis_flash = {
1138         .name = "kinetis",
1139         .flash_bank_command = kinetis_flash_bank_command,
1140         .erase = kinetis_erase,
1141         .protect = kinetis_protect,
1142         .write = kinetis_write,
1143         .read = default_flash_read,
1144         .probe = kinetis_probe,
1145         .auto_probe = kinetis_auto_probe,
1146         .erase_check = kinetis_blank_check,
1147         .protect_check = kinetis_protect_check,
1148         .info = kinetis_info,
1149 };