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   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 "jtag/interface.h"
  35 #include "imp.h"
  36 #include <helper/binarybuffer.h>
  37 #include <target/target_type.h>
  38 #include <target/algorithm.h>
  39 #include <target/armv7m.h>
  40 #include <target/cortex_m.h>
  41
  42 /*
  43  * Implementation Notes
  44  *
  45  * The persistent memories in the Kinetis chip families K10 through
  46  * K70 are all manipulated with the Flash Memory Module.  Some
  47  * variants call this module the FTFE, others call it the FTFL.  To
  48  * indicate that both are considered here, we use FTFX.
  49  *
  50  * Within the module, according to the chip variant, the persistent
  51  * memory is divided into what Freescale terms Program Flash, FlexNVM,
  52  * and FlexRAM.  All chip variants have Program Flash.  Some chip
  53  * variants also have FlexNVM and FlexRAM, which always appear
  54  * together.
  55  *
  56  * A given Kinetis chip may have 1, 2 or 4 blocks of flash.  Here we map
  57  * each block to a separate bank.  Each block size varies by chip and
  58  * may be determined by the read-only SIM_FCFG1 register.  The sector
  59  * size within each bank/block varies by chip, and may be 1, 2 or 4k.
  60  * The sector size may be different for flash and FlexNVM.
  61  *
  62  * The first half of the flash (1 or 2 blocks) is always Program Flash
  63  * and always starts at address 0x00000000.  The "PFLSH" flag, bit 23
  64  * of the read-only SIM_FCFG2 register, determines whether the second
  65  * half of the flash is also Program Flash or FlexNVM+FlexRAM.  When
  66  * PFLSH is set, the second from the first half.  When PFLSH is clear,
  67  * the second half of flash is FlexNVM and always starts at address
  68  * 0x10000000.  FlexRAM, which is also present when PFLSH is clear,
  69  * always starts at address 0x14000000.
  70  *
  71  * The Flash Memory Module provides a register set where flash
  72  * commands are loaded to perform flash operations like erase and
  73  * program.  Different commands are available depending on whether
  74  * Program Flash or FlexNVM/FlexRAM is being manipulated.  Although
  75  * the commands used are quite consistent between flash blocks, the
  76  * parameters they accept differ according to the flash sector size.
  77  *
  78  */
  79
  80 /* Addressess */
  81 #define FLEXRAM         0x14000000
  82 #define FTFx_FSTAT      0x40020000
  83 #define FTFx_FCNFG      0x40020001
  84 #define FTFx_FCCOB3     0x40020004
  85 #define FTFx_FPROT3     0x40020010
  86 #define FTFx_FDPROT     0x40020017
  87 #define SIM_SDID        0x40048024
  88 #define SIM_SOPT1       0x40047000
  89 #define SIM_FCFG1       0x4004804c
  90 #define SIM_FCFG2       0x40048050
  91 #define WDOG_STCTRH     0x40052000
  92
  93 /* Commands */
  94 #define FTFx_CMD_BLOCKSTAT  0x00
  95 #define FTFx_CMD_SECTSTAT   0x01
  96 #define FTFx_CMD_LWORDPROG  0x06
  97 #define FTFx_CMD_SECTERASE  0x09
  98 #define FTFx_CMD_SECTWRITE  0x0b
  99 #define FTFx_CMD_SETFLEXRAM 0x81
 100 #define FTFx_CMD_MASSERASE  0x44
 101
 102 /* The older Kinetis K series uses the following SDID layout :
 103  * Bit 31-16 : 0
 104  * Bit 15-12 : REVID
 105  * Bit 11-7  : DIEID
 106  * Bit 6-4   : FAMID
 107  * Bit 3-0   : PINID
 108  *
 109  * The newer Kinetis series uses the following SDID layout :
 110  * Bit 31-28 : FAMID
 111  * Bit 27-24 : SUBFAMID
 112  * Bit 23-20 : SERIESID
 113  * Bit 19-16 : SRAMSIZE
 114  * Bit 15-12 : REVID
 115  * Bit 6-4   : Reserved (0)
 116  * Bit 3-0   : PINID
 117  *
 118  * We assume that if bits 31-16 are 0 then it's an older
 119  * K-series MCU.
 120  */
 121
 122 #define KINETIS_SOPT1_RAMSIZE_MASK  0x0000F000
 123 #define KINETIS_SOPT1_RAMSIZE_K24FN1M 0x0000B000
 124
 125 #define KINETIS_SDID_K_SERIES_MASK  0x0000FFFF
 126
 127 #define KINETIS_SDID_DIEID_MASK 0x00000F80
 128
 129 #define KINETIS_SDID_DIEID_K22FN128     0x00000680 /* smaller pflash with FTFA */
 130 #define KINETIS_SDID_DIEID_K22FN256     0x00000A80
 131 #define KINETIS_SDID_DIEID_K22FN512     0x00000E80
 132 #define KINETIS_SDID_DIEID_K24FN256     0x00000700
 133
 134 #define KINETIS_SDID_DIEID_K24FN1M      0x00000300 /* Detect Errata 7534 */
 135
 136 /* We can't rely solely on the FAMID field to determine the MCU
 137  * type since some FAMID values identify multiple MCUs with
 138  * different flash sector sizes (K20 and K22 for instance).
 139  * Therefore we combine it with the DIEID bits which may possibly
 140  * break if Freescale bumps the DIEID for a particular MCU. */
 141 #define KINETIS_K_SDID_TYPE_MASK 0x00000FF0
 142 #define KINETIS_K_SDID_K10_M50   0x00000000
 143 #define KINETIS_K_SDID_K10_M72   0x00000080
 144 #define KINETIS_K_SDID_K10_M100  0x00000100
 145 #define KINETIS_K_SDID_K10_M120  0x00000180
 146 #define KINETIS_K_SDID_K11               0x00000220
 147 #define KINETIS_K_SDID_K12               0x00000200
 148 #define KINETIS_K_SDID_K20_M50   0x00000010
 149 #define KINETIS_K_SDID_K20_M72   0x00000090
 150 #define KINETIS_K_SDID_K20_M100  0x00000110
 151 #define KINETIS_K_SDID_K20_M120  0x00000190
 152 #define KINETIS_K_SDID_K21_M50   0x00000230
 153 #define KINETIS_K_SDID_K21_M120  0x00000330
 154 #define KINETIS_K_SDID_K22_M50   0x00000210
 155 #define KINETIS_K_SDID_K22_M120  0x00000310
 156 #define KINETIS_K_SDID_K30_M72   0x000000A0
 157 #define KINETIS_K_SDID_K30_M100  0x00000120
 158 #define KINETIS_K_SDID_K40_M72   0x000000B0
 159 #define KINETIS_K_SDID_K40_M100  0x00000130
 160 #define KINETIS_K_SDID_K50_M72   0x000000E0
 161 #define KINETIS_K_SDID_K51_M72   0x000000F0
 162 #define KINETIS_K_SDID_K53               0x00000170
 163 #define KINETIS_K_SDID_K60_M100  0x00000140
 164 #define KINETIS_K_SDID_K60_M150  0x000001C0
 165 #define KINETIS_K_SDID_K70_M150  0x000001D0
 166
 167 #define KINETIS_SDID_SERIESID_MASK 0x00F00000
 168 #define KINETIS_SDID_SERIESID_K   0x00000000
 169 #define KINETIS_SDID_SERIESID_KL   0x00100000
 170 #define KINETIS_SDID_SERIESID_KW   0x00500000
 171 #define KINETIS_SDID_SERIESID_KV   0x00600000
 172
 173 #define KINETIS_SDID_SUBFAMID_MASK  0x0F000000
 174 #define KINETIS_SDID_SUBFAMID_KX0   0x00000000
 175 #define KINETIS_SDID_SUBFAMID_KX1   0x01000000
 176 #define KINETIS_SDID_SUBFAMID_KX2   0x02000000
 177 #define KINETIS_SDID_SUBFAMID_KX3   0x03000000
 178 #define KINETIS_SDID_SUBFAMID_KX4   0x04000000
 179 #define KINETIS_SDID_SUBFAMID_KX5   0x05000000
 180 #define KINETIS_SDID_SUBFAMID_KX6   0x06000000
 181
 182 #define KINETIS_SDID_FAMILYID_MASK  0xF0000000
 183 #define KINETIS_SDID_FAMILYID_K0X   0x00000000
 184 #define KINETIS_SDID_FAMILYID_K1X   0x10000000
 185 #define KINETIS_SDID_FAMILYID_K2X   0x20000000
 186 #define KINETIS_SDID_FAMILYID_K3X   0x30000000
 187 #define KINETIS_SDID_FAMILYID_K4X   0x40000000
 188 #define KINETIS_SDID_FAMILYID_K6X   0x60000000
 189 #define KINETIS_SDID_FAMILYID_K7X   0x70000000
 190
 191 struct kinetis_flash_bank {
 192         bool probed;
 193         uint32_t sector_size;
 194         uint32_t max_flash_prog_size;
 195         uint32_t protection_size;
 196         uint32_t prog_base;             /* base address for FTFx operations */
 197                                         /* same as bank->base for pflash, differs for FlexNVM */
 198         uint32_t protection_block;      /* number of first protection block in this bank */
 199
 200         uint32_t sim_sdid;
 201         uint32_t sim_fcfg1;
 202         uint32_t sim_fcfg2;
 203
 204         enum {
 205                 FC_AUTO = 0,
 206                 FC_PFLASH,
 207                 FC_FLEX_NVM,
 208                 FC_FLEX_RAM,
 209         } flash_class;
 210
 211         enum {
 212                 FS_PROGRAM_SECTOR = 1,
 213                 FS_PROGRAM_LONGWORD = 2,
 214                 FS_PROGRAM_PHRASE = 4, /* Unsupported */
 215         } flash_support;
 216 };
 217
 218 #define MDM_REG_STAT            0x00
 219 #define MDM_REG_CTRL            0x04
 220 #define MDM_REG_ID              0xfc
 221
 222 #define MDM_STAT_FMEACK         (1<<0)
 223 #define MDM_STAT_FREADY         (1<<1)
 224 #define MDM_STAT_SYSSEC         (1<<2)
 225 #define MDM_STAT_SYSRES         (1<<3)
 226 #define MDM_STAT_FMEEN          (1<<5)
 227 #define MDM_STAT_BACKDOOREN     (1<<6)
 228 #define MDM_STAT_LPEN           (1<<7)
 229 #define MDM_STAT_VLPEN          (1<<8)
 230 #define MDM_STAT_LLSMODEXIT     (1<<9)
 231 #define MDM_STAT_VLLSXMODEXIT   (1<<10)
 232 #define MDM_STAT_CORE_HALTED    (1<<16)
 233 #define MDM_STAT_CORE_SLEEPDEEP (1<<17)
 234 #define MDM_STAT_CORESLEEPING   (1<<18)
 235
 236 #define MEM_CTRL_FMEIP          (1<<0)
 237 #define MEM_CTRL_DBG_DIS        (1<<1)
 238 #define MEM_CTRL_DBG_REQ        (1<<2)
 239 #define MEM_CTRL_SYS_RES_REQ    (1<<3)
 240 #define MEM_CTRL_CORE_HOLD_RES  (1<<4)
 241 #define MEM_CTRL_VLLSX_DBG_REQ  (1<<5)
 242 #define MEM_CTRL_VLLSX_DBG_ACK  (1<<6)
 243 #define MEM_CTRL_VLLSX_STAT_ACK (1<<7)
 244
 245 #define MDM_ACCESS_TIMEOUT      3000 /* iterations */
 246
 247 static int kinetis_mdm_write_register(struct adiv5_dap *dap, unsigned reg, uint32_t value)
 248 {
 249         int retval;
 250         LOG_DEBUG("MDM_REG[0x%02x] <- %08" PRIX32, reg, value);
 251
 252         retval = dap_queue_ap_write(dap_ap(dap, 1), reg, value);
 253         if (retval != ERROR_OK) {
 254                 LOG_DEBUG("MDM: failed to queue a write request");
 255                 return retval;
 256         }
 257
 258         retval = dap_run(dap);
 259         if (retval != ERROR_OK) {
 260                 LOG_DEBUG("MDM: dap_run failed");
 261                 return retval;
 262         }
 263
 264
 265         return ERROR_OK;
 266 }
 267
 268 static int kinetis_mdm_read_register(struct adiv5_dap *dap, unsigned reg, uint32_t *result)
 269 {
 270         int retval;
 271
 272         retval = dap_queue_ap_read(dap_ap(dap, 1), reg, result);
 273         if (retval != ERROR_OK) {
 274                 LOG_DEBUG("MDM: failed to queue a read request");
 275                 return retval;
 276         }
 277
 278         retval = dap_run(dap);
 279         if (retval != ERROR_OK) {
 280                 LOG_DEBUG("MDM: dap_run failed");
 281                 return retval;
 282         }
 283
 284         LOG_DEBUG("MDM_REG[0x%02x]: %08" PRIX32, reg, *result);
 285         return ERROR_OK;
 286 }
 287
 288 static int kinetis_mdm_poll_register(struct adiv5_dap *dap, unsigned reg, uint32_t mask, uint32_t value)
 289 {
 290         uint32_t val;
 291         int retval;
 292         int timeout = MDM_ACCESS_TIMEOUT;
 293
 294         do {
 295                 retval = kinetis_mdm_read_register(dap, reg, &val);
 296                 if (retval != ERROR_OK || (val & mask) == value)
 297                         return retval;
 298
 299                 alive_sleep(1);
 300         } while (timeout--);
 301
 302         LOG_DEBUG("MDM: polling timed out");
 303         return ERROR_FAIL;
 304 }
 305
 306 /*
 307  * This function implements the procedure to mass erase the flash via
 308  * SWD/JTAG on Kinetis K and L series of devices as it is described in
 309  * AN4835 "Production Flash Programming Best Practices for Kinetis K-
 310  * and L-series MCUs" Section 4.2.1
 311  */
 312 COMMAND_HANDLER(kinetis_mdm_mass_erase)
 313 {
 314         struct target *target = get_current_target(CMD_CTX);
 315         struct cortex_m_common *cortex_m = target_to_cm(target);
 316         struct adiv5_dap *dap = cortex_m->armv7m.arm.dap;
 317
 318         if (!dap) {
 319                 LOG_ERROR("Cannot perform mass erase with a high-level adapter");
 320                 return ERROR_FAIL;
 321         }
 322
 323         int retval;
 324
 325         /*
 326          * ... Power on the processor, or if power has already been
 327          * applied, assert the RESET pin to reset the processor. For
 328          * devices that do not have a RESET pin, write the System
 329          * Reset Request bit in the MDM-AP control register after
 330          * establishing communication...
 331          */
 332
 333         /* assert SRST */
 334         if (jtag_get_reset_config() & RESET_HAS_SRST)
 335                 adapter_assert_reset();
 336         else
 337                 LOG_WARNING("Attempting mass erase without hardware reset. This is not reliable; "
 338                             "it's recommended you connect SRST and use ``reset_config srst_only''.");
 339
 340         retval = kinetis_mdm_write_register(dap, MDM_REG_CTRL, MEM_CTRL_SYS_RES_REQ);
 341         if (retval != ERROR_OK)
 342                 return retval;
 343
 344         /*
 345          * ... Read the MDM-AP status register until the Flash Ready bit sets...
 346          */
 347         retval = kinetis_mdm_poll_register(dap, MDM_REG_STAT,
 348                                            MDM_STAT_FREADY | MDM_STAT_SYSRES,
 349                                            MDM_STAT_FREADY);
 350         if (retval != ERROR_OK) {
 351                 LOG_ERROR("MDM : flash ready timeout");
 352                 return retval;
 353         }
 354
 355         /*
 356          * ... Write the MDM-AP control register to set the Flash Mass
 357          * Erase in Progress bit. This will start the mass erase
 358          * process...
 359          */
 360         retval = kinetis_mdm_write_register(dap, MDM_REG_CTRL,
 361                                             MEM_CTRL_SYS_RES_REQ | MEM_CTRL_FMEIP);
 362         if (retval != ERROR_OK)
 363                 return retval;
 364
 365         /* As a sanity check make sure that device started mass erase procedure */
 366         retval = kinetis_mdm_poll_register(dap, MDM_REG_STAT,
 367                                            MDM_STAT_FMEACK, MDM_STAT_FMEACK);
 368         if (retval != ERROR_OK)
 369                 return retval;
 370
 371         /*
 372          * ... Read the MDM-AP control register until the Flash Mass
 373          * Erase in Progress bit clears...
 374          */
 375         retval = kinetis_mdm_poll_register(dap, MDM_REG_CTRL,
 376                                            MEM_CTRL_FMEIP,
 377                                            0);
 378         if (retval != ERROR_OK)
 379                 return retval;
 380
 381         /*
 382          * ... Negate the RESET signal or clear the System Reset Request
 383          * bit in the MDM-AP control register...
 384          */
 385         retval = kinetis_mdm_write_register(dap, MDM_REG_CTRL, 0);
 386         if (retval != ERROR_OK)
 387                 return retval;
 388
 389         if (jtag_get_reset_config() & RESET_HAS_SRST) {
 390                 /* halt MCU otherwise it loops in hard fault - WDOG reset cycle */
 391                 target->reset_halt = true;
 392                 target->type->assert_reset(target);
 393                 target->type->deassert_reset(target);
 394         }
 395
 396         return ERROR_OK;
 397 }
 398
 399 static const uint32_t kinetis_known_mdm_ids[] = {
 400         0x001C0000,     /* Kinetis-K Series */
 401         0x001C0020,     /* Kinetis-L/M/V/E Series */
 402 };
 403
 404 /*
 405  * This function implements the procedure to connect to
 406  * SWD/JTAG on Kinetis K and L series of devices as it is described in
 407  * AN4835 "Production Flash Programming Best Practices for Kinetis K-
 408  * and L-series MCUs" Section 4.1.1
 409  */
 410 COMMAND_HANDLER(kinetis_check_flash_security_status)
 411 {
 412         struct target *target = get_current_target(CMD_CTX);
 413         struct cortex_m_common *cortex_m = target_to_cm(target);
 414         struct adiv5_dap *dap = cortex_m->armv7m.arm.dap;
 415
 416         if (!dap) {
 417                 LOG_WARNING("Cannot check flash security status with a high-level adapter");
 418                 return ERROR_OK;
 419         }
 420
 421         uint32_t val;
 422         int retval;
 423
 424         /*
 425          * ... The MDM-AP ID register can be read to verify that the
 426          * connection is working correctly...
 427          */
 428         retval = kinetis_mdm_read_register(dap, MDM_REG_ID, &val);
 429         if (retval != ERROR_OK) {
 430                 LOG_ERROR("MDM: failed to read ID register");
 431                 goto fail;
 432         }
 433
 434         bool found = false;
 435         for (size_t i = 0; i < ARRAY_SIZE(kinetis_known_mdm_ids); i++) {
 436                 if (val == kinetis_known_mdm_ids[i]) {
 437                         found = true;
 438                         break;
 439                 }
 440         }
 441
 442         if (!found)
 443                 LOG_WARNING("MDM: unknown ID %08" PRIX32, val);
 444
 445         /*
 446          * ... Read the MDM-AP status register until the Flash Ready bit sets...
 447          */
 448         retval = kinetis_mdm_poll_register(dap, MDM_REG_STAT,
 449                                            MDM_STAT_FREADY,
 450                                            MDM_STAT_FREADY);
 451         if (retval != ERROR_OK) {
 452                 LOG_ERROR("MDM: flash ready timeout");
 453                 goto fail;
 454         }
 455
 456         /*
 457          * ... Read the System Security bit to determine if security is enabled.
 458          * If System Security = 0, then proceed. If System Security = 1, then
 459          * communication with the internals of the processor, including the
 460          * flash, will not be possible without issuing a mass erase command or
 461          * unsecuring the part through other means (backdoor key unlock)...
 462          */
 463         retval = kinetis_mdm_read_register(dap, MDM_REG_STAT, &val);
 464         if (retval != ERROR_OK) {
 465                 LOG_ERROR("MDM: failed to read MDM_REG_STAT");
 466                 goto fail;
 467         }
 468
 469         if ((val & (MDM_STAT_SYSSEC | MDM_STAT_CORE_HALTED)) == MDM_STAT_SYSSEC) {
 470                 LOG_WARNING("MDM: Secured MCU state detected however it may be a false alarm");
 471                 LOG_WARNING("MDM: Halting target to detect secured state reliably");
 472
 473                 retval = target_halt(target);
 474                 if (retval == ERROR_OK)
 475                         retval = target_wait_state(target, TARGET_HALTED, 100);
 476
 477                 if (retval != ERROR_OK) {
 478                         LOG_WARNING("MDM: Target not halted, trying reset halt");
 479                         target->reset_halt = true;
 480                         target->type->assert_reset(target);
 481                         target->type->deassert_reset(target);
 482                 }
 483
 484                 /* re-read status */
 485                 retval = kinetis_mdm_read_register(dap, MDM_REG_STAT, &val);
 486                 if (retval != ERROR_OK) {
 487                         LOG_ERROR("MDM: failed to read MDM_REG_STAT");
 488                         goto fail;
 489                 }
 490         }
 491
 492         if (val & MDM_STAT_SYSSEC) {
 493                 jtag_poll_set_enabled(false);
 494
 495                 LOG_WARNING("*********** ATTENTION! ATTENTION! ATTENTION! ATTENTION! **********");
 496                 LOG_WARNING("****                                                          ****");
 497                 LOG_WARNING("**** Your Kinetis MCU is in secured state, which means that,  ****");
 498                 LOG_WARNING("**** with exception for very basic communication, JTAG/SWD    ****");
 499                 LOG_WARNING("**** interface will NOT work. In order to restore its         ****");
 500                 LOG_WARNING("**** functionality please issue 'kinetis mdm mass_erase'      ****");
 501                 LOG_WARNING("**** command, power cycle the MCU and restart OpenOCD.        ****");
 502                 LOG_WARNING("****                                                          ****");
 503                 LOG_WARNING("*********** ATTENTION! ATTENTION! ATTENTION! ATTENTION! **********");
 504         } else {
 505                 LOG_INFO("MDM: Chip is unsecured. Continuing.");
 506                 jtag_poll_set_enabled(true);
 507         }
 508
 509         return ERROR_OK;
 510
 511 fail:
 512         LOG_ERROR("MDM: Failed to check security status of the MCU. Cannot proceed further");
 513         jtag_poll_set_enabled(false);
 514         return retval;
 515 }
 516
 517 FLASH_BANK_COMMAND_HANDLER(kinetis_flash_bank_command)
 518 {
 519         struct kinetis_flash_bank *bank_info;
 520
 521         if (CMD_ARGC < 6)
 522                 return ERROR_COMMAND_SYNTAX_ERROR;
 523
 524         LOG_INFO("add flash_bank kinetis %s", bank->name);
 525
 526         bank_info = malloc(sizeof(struct kinetis_flash_bank));
 527
 528         memset(bank_info, 0, sizeof(struct kinetis_flash_bank));
 529
 530         bank->driver_priv = bank_info;
 531
 532         return ERROR_OK;
 533 }
 534
 535 /* Disable the watchdog on Kinetis devices */
 536 int kinetis_disable_wdog(struct target *target, uint32_t sim_sdid)
 537 {
 538         struct working_area *wdog_algorithm;
 539         struct armv7m_algorithm armv7m_info;
 540         uint16_t wdog;
 541         int retval;
 542
 543         static const uint8_t kinetis_unlock_wdog_code[] = {
 544                 /* WDOG_UNLOCK = 0xC520 */
 545                 0x4f, 0xf4, 0x00, 0x53,    /* mov.w   r3, #8192     ; 0x2000  */
 546                 0xc4, 0xf2, 0x05, 0x03,    /* movt    r3, #16389    ; 0x4005  */
 547                 0x4c, 0xf2, 0x20, 0x52,   /* movw    r2, #50464    ; 0xc520  */
 548                 0xda, 0x81,               /* strh    r2, [r3, #14]  */
 549
 550                 /* WDOG_UNLOCK = 0xD928 */
 551                 0x4f, 0xf4, 0x00, 0x53,   /* mov.w   r3, #8192     ; 0x2000  */
 552                 0xc4, 0xf2, 0x05, 0x03,   /* movt    r3, #16389    ; 0x4005  */
 553                 0x4d, 0xf6, 0x28, 0x12,   /* movw    r2, #55592    ; 0xd928  */
 554                 0xda, 0x81,               /* strh    r2, [r3, #14]  */
 555
 556                 /* WDOG_SCR = 0x1d2 */
 557                 0x4f, 0xf4, 0x00, 0x53,   /* mov.w   r3, #8192     ; 0x2000  */
 558                 0xc4, 0xf2, 0x05, 0x03,   /* movt    r3, #16389    ; 0x4005  */
 559                 0x4f, 0xf4, 0xe9, 0x72,   /* mov.w   r2, #466      ; 0x1d2  */
 560                 0x1a, 0x80,               /* strh    r2, [r3, #0]  */
 561
 562                 /* END */
 563                 0x00, 0xBE,               /* bkpt #0 */
 564         };
 565
 566         /* Decide whether the connected device needs watchdog disabling.
 567          * Disable for all Kx devices, i.e., return if it is a KLx */
 568
 569         if ((sim_sdid & KINETIS_SDID_SERIESID_MASK) == KINETIS_SDID_SERIESID_KL)
 570                 return ERROR_OK;
 571
 572         /* The connected device requires watchdog disabling. */
 573         retval = target_read_u16(target, WDOG_STCTRH, &wdog);
 574         if (retval != ERROR_OK)
 575                 return retval;
 576
 577         if ((wdog & 0x1) == 0) {
 578                 /* watchdog already disabled */
 579                 return ERROR_OK;
 580         }
 581         LOG_INFO("Disabling Kinetis watchdog (initial WDOG_STCTRLH = 0x%x)", wdog);
 582
 583         if (target->state != TARGET_HALTED) {
 584                 LOG_ERROR("Target not halted");
 585                 return ERROR_TARGET_NOT_HALTED;
 586         }
 587
 588         retval = target_alloc_working_area(target, sizeof(kinetis_unlock_wdog_code), &wdog_algorithm);
 589         if (retval != ERROR_OK)
 590                 return retval;
 591
 592         retval = target_write_buffer(target, wdog_algorithm->address,
 593                         sizeof(kinetis_unlock_wdog_code), (uint8_t *)kinetis_unlock_wdog_code);
 594         if (retval != ERROR_OK) {
 595                 target_free_working_area(target, wdog_algorithm);
 596                 return retval;
 597         }
 598
 599         armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
 600         armv7m_info.core_mode = ARM_MODE_THREAD;
 601
 602         retval = target_run_algorithm(target, 0, NULL, 0, NULL, wdog_algorithm->address,
 603                         wdog_algorithm->address + (sizeof(kinetis_unlock_wdog_code) - 2),
 604                         10000, &armv7m_info);
 605
 606         if (retval != ERROR_OK)
 607                 LOG_ERROR("error executing kinetis wdog unlock algorithm");
 608
 609         retval = target_read_u16(target, WDOG_STCTRH, &wdog);
 610         if (retval != ERROR_OK)
 611                 return retval;
 612         LOG_INFO("WDOG_STCTRLH = 0x%x", wdog);
 613
 614         target_free_working_area(target, wdog_algorithm);
 615
 616         return retval;
 617 }
 618
 619 COMMAND_HANDLER(kinetis_disable_wdog_handler)
 620 {
 621         int result;
 622         uint32_t sim_sdid;
 623         struct target *target = get_current_target(CMD_CTX);
 624
 625         if (CMD_ARGC > 0)
 626                 return ERROR_COMMAND_SYNTAX_ERROR;
 627
 628         result = target_read_u32(target, SIM_SDID, &sim_sdid);
 629         if (result != ERROR_OK) {
 630                 LOG_ERROR("Failed to read SIMSDID");
 631                 return result;
 632         }
 633
 634         result = kinetis_disable_wdog(target, sim_sdid);
 635         return result;
 636 }
 637
 638
 639 /* Kinetis Program-LongWord Microcodes */
 640 static const uint8_t kinetis_flash_write_code[] = {
 641         /* Params:
 642          * r0 - workarea buffer
 643         * r1 - target address
 644         * r2 - wordcount
 645         * Clobbered:
 646         * r4 - tmp
 647         * r5 - tmp
 648         * r6 - tmp
 649         * r7 - tmp
 650         */
 651
 652                                                         /* .L1: */
 653                                                 /* for(register uint32_t i=0;i<wcount;i++){ */
 654         0x04, 0x1C,                                     /* mov    r4, r0          */
 655         0x00, 0x23,                                     /* mov    r3, #0          */
 656                                                         /* .L2: */
 657         0x0E, 0x1A,                                     /* sub    r6, r1, r0      */
 658         0xA6, 0x19,                                     /* add    r6, r4, r6      */
 659         0x93, 0x42,                                     /* cmp    r3, r2          */
 660         0x16, 0xD0,                                     /* beq    .L9             */
 661                                                         /* .L5: */
 662                                                 /* while((FTFx_FSTAT&FTFA_FSTAT_CCIF_MASK) != FTFA_FSTAT_CCIF_MASK){}; */
 663         0x0B, 0x4D,                                     /* ldr    r5, .L10        */
 664         0x2F, 0x78,                                     /* ldrb   r7, [r5]        */
 665         0x7F, 0xB2,                                     /* sxtb   r7, r7          */
 666         0x00, 0x2F,                                     /* cmp    r7, #0          */
 667         0xFA, 0xDA,                                     /* bge    .L5             */
 668                                                 /* FTFx_FSTAT = FTFA_FSTAT_ACCERR_MASK|FTFA_FSTAT_FPVIOL_MASK|FTFA_FSTAT_RDCO */
 669         0x70, 0x27,                                     /* mov    r7, #112        */
 670         0x2F, 0x70,                                     /* strb   r7, [r5]        */
 671                                                 /* FTFx_FCCOB3 = faddr; */
 672         0x09, 0x4F,                                     /* ldr    r7, .L10+4      */
 673         0x3E, 0x60,                                     /* str    r6, [r7]        */
 674         0x06, 0x27,                                     /* mov    r7, #6          */
 675                                                 /* FTFx_FCCOB0 = 0x06;  */
 676         0x08, 0x4E,                                     /* ldr    r6, .L10+8      */
 677         0x37, 0x70,                                     /* strb   r7, [r6]        */
 678                                                 /* FTFx_FCCOB7 = *pLW;  */
 679         0x80, 0xCC,                                     /* ldmia  r4!, {r7}       */
 680         0x08, 0x4E,                                     /* ldr    r6, .L10+12     */
 681         0x37, 0x60,                                     /* str    r7, [r6]        */
 682                                                 /* FTFx_FSTAT = FTFA_FSTAT_CCIF_MASK; */
 683         0x80, 0x27,                                     /* mov    r7, #128        */
 684         0x2F, 0x70,                                     /* strb   r7, [r5]        */
 685                                                         /* .L4: */
 686                                                 /* while((FTFx_FSTAT&FTFA_FSTAT_CCIF_MASK) != FTFA_FSTAT_CCIF_MASK){}; */
 687         0x2E, 0x78,                                     /* ldrb    r6, [r5]       */
 688         0x77, 0xB2,                                     /* sxtb    r7, r6         */
 689         0x00, 0x2F,                                     /* cmp     r7, #0         */
 690         0xFB, 0xDA,                                     /* bge     .L4            */
 691         0x01, 0x33,                                     /* add     r3, r3, #1     */
 692         0xE4, 0xE7,                                     /* b       .L2            */
 693                                                         /* .L9: */
 694         0x00, 0xBE,                                     /* bkpt #0                */
 695                                                         /* .L10: */
 696         0x00, 0x00, 0x02, 0x40,         /* .word    1073872896    */
 697         0x04, 0x00, 0x02, 0x40,         /* .word    1073872900    */
 698         0x07, 0x00, 0x02, 0x40,         /* .word    1073872903    */
 699         0x08, 0x00, 0x02, 0x40,         /* .word    1073872904    */
 700 };
 701
 702 /* Program LongWord Block Write */
 703 static int kinetis_write_block(struct flash_bank *bank, const uint8_t *buffer,
 704                 uint32_t offset, uint32_t wcount)
 705 {
 706         struct target *target = bank->target;
 707         uint32_t buffer_size = 2048;            /* Default minimum value */
 708         struct working_area *write_algorithm;
 709         struct working_area *source;
 710         struct kinetis_flash_bank *kinfo = bank->driver_priv;
 711         uint32_t address = kinfo->prog_base + offset;
 712         struct reg_param reg_params[3];
 713         struct armv7m_algorithm armv7m_info;
 714         int retval = ERROR_OK;
 715
 716         /* Params:
 717          * r0 - workarea buffer
 718          * r1 - target address
 719          * r2 - wordcount
 720          * Clobbered:
 721          * r4 - tmp
 722          * r5 - tmp
 723          * r6 - tmp
 724          * r7 - tmp
 725          */
 726
 727         /* Increase buffer_size if needed */
 728         if (buffer_size < (target->working_area_size/2))
 729                 buffer_size = (target->working_area_size/2);
 730
 731         LOG_INFO("Kinetis: FLASH Write ...");
 732
 733         /* check code alignment */
 734         if (offset & 0x1) {
 735                 LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset);
 736                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 737         }
 738
 739         /* allocate working area with flash programming code */
 740         if (target_alloc_working_area(target, sizeof(kinetis_flash_write_code),
 741                         &write_algorithm) != ERROR_OK) {
 742                 LOG_WARNING("no working area available, can't do block memory writes");
 743                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 744         }
 745
 746         retval = target_write_buffer(target, write_algorithm->address,
 747                 sizeof(kinetis_flash_write_code), kinetis_flash_write_code);
 748         if (retval != ERROR_OK)
 749                 return retval;
 750
 751         /* memory buffer */
 752         while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK) {
 753                 buffer_size /= 4;
 754                 if (buffer_size <= 256) {
 755                         /* free working area, write algorithm already allocated */
 756                         target_free_working_area(target, write_algorithm);
 757
 758                         LOG_WARNING("No large enough working area available, can't do block memory writes");
 759                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 760                 }
 761         }
 762
 763         armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
 764         armv7m_info.core_mode = ARM_MODE_THREAD;
 765
 766         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT); /* *pLW (*buffer) */
 767         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT); /* faddr */
 768         init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT); /* number of words to program */
 769
 770         /* write code buffer and use Flash programming code within kinetis       */
 771         /* Set breakpoint to 0 with time-out of 1000 ms                          */
 772         while (wcount > 0) {
 773                 uint32_t thisrun_count = (wcount > (buffer_size / 4)) ? (buffer_size / 4) : wcount;
 774
 775                 retval = target_write_buffer(target, source->address, thisrun_count * 4, buffer);
 776                 if (retval != ERROR_OK)
 777                         break;
 778
 779                 buf_set_u32(reg_params[0].value, 0, 32, source->address);
 780                 buf_set_u32(reg_params[1].value, 0, 32, address);
 781                 buf_set_u32(reg_params[2].value, 0, 32, thisrun_count);
 782
 783                 retval = target_run_algorithm(target, 0, NULL, 3, reg_params,
 784                                 write_algorithm->address, 0, 100000, &armv7m_info);
 785                 if (retval != ERROR_OK) {
 786                         LOG_ERROR("Error executing kinetis Flash programming algorithm");
 787                         retval = ERROR_FLASH_OPERATION_FAILED;
 788                         break;
 789                 }
 790
 791                 buffer += thisrun_count * 4;
 792                 address += thisrun_count * 4;
 793                 wcount -= thisrun_count;
 794         }
 795
 796         target_free_working_area(target, source);
 797         target_free_working_area(target, write_algorithm);
 798
 799         destroy_reg_param(&reg_params[0]);
 800         destroy_reg_param(&reg_params[1]);
 801         destroy_reg_param(&reg_params[2]);
 802
 803         return retval;
 804 }
 805
 806 static int kinetis_protect(struct flash_bank *bank, int set, int first, int last)
 807 {
 808         LOG_WARNING("kinetis_protect not supported yet");
 809         /* FIXME: TODO */
 810
 811         if (bank->target->state != TARGET_HALTED) {
 812                 LOG_ERROR("Target not halted");
 813                 return ERROR_TARGET_NOT_HALTED;
 814         }
 815
 816         return ERROR_FLASH_BANK_INVALID;
 817 }
 818
 819 static int kinetis_protect_check(struct flash_bank *bank)
 820 {
 821         struct kinetis_flash_bank *kinfo = bank->driver_priv;
 822         int result;
 823         int i, b;
 824         uint32_t fprot, psec;
 825
 826         if (bank->target->state != TARGET_HALTED) {
 827                 LOG_ERROR("Target not halted");
 828                 return ERROR_TARGET_NOT_HALTED;
 829         }
 830
 831         if (kinfo->flash_class == FC_PFLASH) {
 832                 uint8_t buffer[4];
 833
 834                 /* read protection register */
 835                 result = target_read_memory(bank->target, FTFx_FPROT3, 1, 4, buffer);
 836
 837                 if (result != ERROR_OK)
 838                         return result;
 839
 840                 fprot = target_buffer_get_u32(bank->target, buffer);
 841                 /* Every bit protects 1/32 of the full flash (not necessarily just this bank) */
 842
 843         } else if (kinfo->flash_class == FC_FLEX_NVM) {
 844                 uint8_t fdprot;
 845
 846                 /* read protection register */
 847                 result = target_read_memory(bank->target, FTFx_FDPROT, 1, 1, &fdprot);
 848
 849                 if (result != ERROR_OK)
 850                         return result;
 851
 852                 fprot = fdprot;
 853
 854         } else {
 855                 LOG_ERROR("Protection checks for FlexRAM not supported");
 856                 return ERROR_FLASH_BANK_INVALID;
 857         }
 858
 859         b = kinfo->protection_block;
 860         for (psec = 0, i = 0; i < bank->num_sectors; i++) {
 861                 if ((fprot >> b) & 1)
 862                         bank->sectors[i].is_protected = 0;
 863                 else
 864                         bank->sectors[i].is_protected = 1;
 865
 866                 psec += bank->sectors[i].size;
 867
 868                 if (psec >= kinfo->protection_size) {
 869                         psec = 0;
 870                         b++;
 871                 }
 872         }
 873
 874         return ERROR_OK;
 875 }
 876
 877 static int kinetis_ftfx_command(struct target *target, uint8_t fcmd, uint32_t faddr,
 878                                 uint8_t fccob4, uint8_t fccob5, uint8_t fccob6, uint8_t fccob7,
 879                                 uint8_t fccob8, uint8_t fccob9, uint8_t fccoba, uint8_t fccobb,
 880                                 uint8_t *ftfx_fstat)
 881 {
 882         uint8_t command[12] = {faddr & 0xff, (faddr >> 8) & 0xff, (faddr >> 16) & 0xff, fcmd,
 883                         fccob7, fccob6, fccob5, fccob4,
 884                         fccobb, fccoba, fccob9, fccob8};
 885         int result, i;
 886         uint8_t buffer;
 887
 888         /* wait for done */
 889         for (i = 0; i < 50; i++) {
 890                 result =
 891                         target_read_memory(target, FTFx_FSTAT, 1, 1, &buffer);
 892
 893                 if (result != ERROR_OK)
 894                         return result;
 895
 896                 if (buffer & 0x80)
 897                         break;
 898
 899                 buffer = 0x00;
 900         }
 901
 902         if (buffer != 0x80) {
 903                 /* reset error flags */
 904                 buffer = 0x30;
 905                 result =
 906                         target_write_memory(target, FTFx_FSTAT, 1, 1, &buffer);
 907                 if (result != ERROR_OK)
 908                         return result;
 909         }
 910
 911         result = target_write_memory(target, FTFx_FCCOB3, 4, 3, command);
 912
 913         if (result != ERROR_OK)
 914                 return result;
 915
 916         /* start command */
 917         buffer = 0x80;
 918         result = target_write_memory(target, FTFx_FSTAT, 1, 1, &buffer);
 919         if (result != ERROR_OK)
 920                 return result;
 921
 922         /* wait for done */
 923         for (i = 0; i < 240; i++) { /* Need longtime for "Mass Erase" Command Nemui Changed */
 924                 result =
 925                         target_read_memory(target, FTFx_FSTAT, 1, 1, ftfx_fstat);
 926
 927                 if (result != ERROR_OK)
 928                         return result;
 929
 930                 if (*ftfx_fstat & 0x80)
 931                         break;
 932         }
 933
 934         if ((*ftfx_fstat & 0xf0) != 0x80) {
 935                 LOG_ERROR
 936                         ("ftfx command failed FSTAT: %02X FCCOB: %02X%02X%02X%02X %02X%02X%02X%02X %02X%02X%02X%02X",
 937                          *ftfx_fstat, command[3], command[2], command[1], command[0],
 938                          command[7], command[6], command[5], command[4],
 939                          command[11], command[10], command[9], command[8]);
 940                 return ERROR_FLASH_OPERATION_FAILED;
 941         }
 942
 943         return ERROR_OK;
 944 }
 945
 946
 947 static int kinetis_erase(struct flash_bank *bank, int first, int last)
 948 {
 949         int result, i;
 950         struct kinetis_flash_bank *kinfo = bank->driver_priv;
 951
 952         if (bank->target->state != TARGET_HALTED) {
 953                 LOG_ERROR("Target not halted");
 954                 return ERROR_TARGET_NOT_HALTED;
 955         }
 956
 957         if ((first > bank->num_sectors) || (last > bank->num_sectors))
 958                 return ERROR_FLASH_OPERATION_FAILED;
 959
 960         /*
 961          * FIXME: TODO: use the 'Erase Flash Block' command if the
 962          * requested erase is PFlash or NVM and encompasses the entire
 963          * block.  Should be quicker.
 964          */
 965         for (i = first; i <= last; i++) {
 966                 uint8_t ftfx_fstat;
 967                 /* set command and sector address */
 968                 result = kinetis_ftfx_command(bank->target, FTFx_CMD_SECTERASE, kinfo->prog_base + bank->sectors[i].offset,
 969                                 0, 0, 0, 0,  0, 0, 0, 0,  &ftfx_fstat);
 970
 971                 if (result != ERROR_OK) {
 972                         LOG_WARNING("erase sector %d failed", i);
 973                         return ERROR_FLASH_OPERATION_FAILED;
 974                 }
 975
 976                 bank->sectors[i].is_erased = 1;
 977         }
 978
 979         if (first == 0) {
 980                 LOG_WARNING
 981                         ("flash configuration field erased, please reset the device");
 982         }
 983
 984         return ERROR_OK;
 985 }
 986
 987 static int kinetis_make_ram_ready(struct target *target)
 988 {
 989         int result;
 990         uint8_t ftfx_fstat;
 991         uint8_t ftfx_fcnfg;
 992
 993         /* check if ram ready */
 994         result = target_read_memory(target, FTFx_FCNFG, 1, 1, &ftfx_fcnfg);
 995         if (result != ERROR_OK)
 996                 return result;
 997
 998         if (ftfx_fcnfg & (1 << 1))
 999                 return ERROR_OK;        /* ram ready */
1000
1001         /* make flex ram available */
1002         result = kinetis_ftfx_command(target, FTFx_CMD_SETFLEXRAM, 0x00ff0000,
1003                                  0, 0, 0, 0,  0, 0, 0, 0,  &ftfx_fstat);
1004         if (result != ERROR_OK)
1005                 return ERROR_FLASH_OPERATION_FAILED;
1006
1007         /* check again */
1008         result = target_read_memory(target, FTFx_FCNFG, 1, 1, &ftfx_fcnfg);
1009         if (result != ERROR_OK)
1010                 return result;
1011
1012         if (ftfx_fcnfg & (1 << 1))
1013                 return ERROR_OK;        /* ram ready */
1014
1015         return ERROR_FLASH_OPERATION_FAILED;
1016 }
1017
1018 static int kinetis_write(struct flash_bank *bank, const uint8_t *buffer,
1019                          uint32_t offset, uint32_t count)
1020 {
1021         unsigned int i, result, fallback = 0;
1022         uint32_t wc;
1023         struct kinetis_flash_bank *kinfo = bank->driver_priv;
1024         uint8_t *new_buffer = NULL;
1025
1026         if (bank->target->state != TARGET_HALTED) {
1027                 LOG_ERROR("Target not halted");
1028                 return ERROR_TARGET_NOT_HALTED;
1029         }
1030
1031         if (!(kinfo->flash_support & FS_PROGRAM_SECTOR)) {
1032                 /* fallback to longword write */
1033                 fallback = 1;
1034                 LOG_WARNING("This device supports Program Longword execution only.");
1035         } else {
1036                 result = kinetis_make_ram_ready(bank->target);
1037                 if (result != ERROR_OK) {
1038                         fallback = 1;
1039                         LOG_WARNING("FlexRAM not ready, fallback to slow longword write.");
1040                 }
1041         }
1042
1043         LOG_DEBUG("flash write @08%" PRIX32, offset);
1044
1045
1046         /* program section command */
1047         if (fallback == 0) {
1048                 /*
1049                  * Kinetis uses different terms for the granularity of
1050                  * sector writes, e.g. "phrase" or "128 bits".  We use
1051                  * the generic term "chunk". The largest possible
1052                  * Kinetis "chunk" is 16 bytes (128 bits).
1053                  */
1054                 unsigned prog_section_chunk_bytes = kinfo->sector_size >> 8;
1055                 unsigned prog_size_bytes = kinfo->max_flash_prog_size;
1056                 for (i = 0; i < count; i += prog_size_bytes) {
1057                         uint8_t residual_buffer[16];
1058                         uint8_t ftfx_fstat;
1059                         uint32_t section_count = prog_size_bytes / prog_section_chunk_bytes;
1060                         uint32_t residual_wc = 0;
1061
1062                         /*
1063                          * Assume the word count covers an entire
1064                          * sector.
1065                          */
1066                         wc = prog_size_bytes / 4;
1067
1068                         /*
1069                          * If bytes to be programmed are less than the
1070                          * full sector, then determine the number of
1071                          * full-words to program, and put together the
1072                          * residual buffer so that a full "section"
1073                          * may always be programmed.
1074                          */
1075                         if ((count - i) < prog_size_bytes) {
1076                                 /* number of bytes to program beyond full section */
1077                                 unsigned residual_bc = (count-i) % prog_section_chunk_bytes;
1078
1079                                 /* number of complete words to copy directly from buffer */
1080                                 wc = (count - i - residual_bc) / 4;
1081
1082                                 /* number of total sections to write, including residual */
1083                                 section_count = DIV_ROUND_UP((count-i), prog_section_chunk_bytes);
1084
1085                                 /* any residual bytes delivers a whole residual section */
1086                                 residual_wc = (residual_bc ? prog_section_chunk_bytes : 0)/4;
1087
1088                                 /* clear residual buffer then populate residual bytes */
1089                                 (void) memset(residual_buffer, 0xff, prog_section_chunk_bytes);
1090                                 (void) memcpy(residual_buffer, &buffer[i+4*wc], residual_bc);
1091                         }
1092
1093                         LOG_DEBUG("write section @ %08" PRIX32 " with length %" PRIu32 " bytes",
1094                                   offset + i, (uint32_t)wc*4);
1095
1096                         /* write data to flexram as whole-words */
1097                         result = target_write_memory(bank->target, FLEXRAM, 4, wc,
1098                                         buffer + i);
1099
1100                         if (result != ERROR_OK) {
1101                                 LOG_ERROR("target_write_memory failed");
1102                                 return result;
1103                         }
1104
1105                         /* write the residual words to the flexram */
1106                         if (residual_wc) {
1107                                 result = target_write_memory(bank->target,
1108                                                 FLEXRAM+4*wc,
1109                                                 4, residual_wc,
1110                                                 residual_buffer);
1111
1112                                 if (result != ERROR_OK) {
1113                                         LOG_ERROR("target_write_memory failed");
1114                                         return result;
1115                                 }
1116                         }
1117
1118                         /* execute section-write command */
1119                         result = kinetis_ftfx_command(bank->target, FTFx_CMD_SECTWRITE, kinfo->prog_base + offset + i,
1120                                         section_count>>8, section_count, 0, 0,
1121                                         0, 0, 0, 0,  &ftfx_fstat);
1122
1123                         if (result != ERROR_OK)
1124                                 return ERROR_FLASH_OPERATION_FAILED;
1125                 }
1126         }
1127         /* program longword command, not supported in "SF3" devices */
1128         else if (kinfo->flash_support & FS_PROGRAM_LONGWORD) {
1129                 if (count & 0x3) {
1130                         uint32_t old_count = count;
1131                         count = (old_count | 3) + 1;
1132                         new_buffer = malloc(count);
1133                         if (new_buffer == NULL) {
1134                                 LOG_ERROR("odd number of bytes to write and no memory "
1135                                         "for padding buffer");
1136                                 return ERROR_FAIL;
1137                         }
1138                         LOG_INFO("odd number of bytes to write (%" PRIu32 "), extending to %" PRIu32 " "
1139                                 "and padding with 0xff", old_count, count);
1140                         memset(new_buffer, 0xff, count);
1141                         buffer = memcpy(new_buffer, buffer, old_count);
1142                 }
1143
1144                 uint32_t words_remaining = count / 4;
1145
1146                 kinetis_disable_wdog(bank->target, kinfo->sim_sdid);
1147
1148                 /* try using a block write */
1149                 int retval = kinetis_write_block(bank, buffer, offset, words_remaining);
1150
1151                 if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
1152                         /* if block write failed (no sufficient working area),
1153                          * we use normal (slow) single word accesses */
1154                         LOG_WARNING("couldn't use block writes, falling back to single "
1155                                 "memory accesses");
1156
1157                         for (i = 0; i < count; i += 4) {
1158                                 uint8_t ftfx_fstat;
1159
1160                                 LOG_DEBUG("write longword @ %08" PRIX32, (uint32_t)(offset + i));
1161
1162                                 uint8_t padding[4] = {0xff, 0xff, 0xff, 0xff};
1163                                 memcpy(padding, buffer + i, MIN(4, count-i));
1164
1165                                 result = kinetis_ftfx_command(bank->target, FTFx_CMD_LWORDPROG, kinfo->prog_base + offset + i,
1166                                                 padding[3], padding[2], padding[1], padding[0],
1167                                                 0, 0, 0, 0,  &ftfx_fstat);
1168
1169                                 if (result != ERROR_OK)
1170                                         return ERROR_FLASH_OPERATION_FAILED;
1171                         }
1172                 }
1173         } else {
1174                 LOG_ERROR("Flash write strategy not implemented");
1175                 return ERROR_FLASH_OPERATION_FAILED;
1176         }
1177
1178         return ERROR_OK;
1179 }
1180
1181 static int kinetis_read_part_info(struct flash_bank *bank)
1182 {
1183         int result, i;
1184         uint32_t offset = 0;
1185         uint8_t fcfg1_nvmsize, fcfg1_pfsize, fcfg1_eesize, fcfg1_depart;
1186         uint8_t fcfg2_pflsh;
1187         uint32_t nvm_size = 0, pf_size = 0, df_size = 0, ee_size = 0;
1188         unsigned num_blocks = 0, num_pflash_blocks = 0, num_nvm_blocks = 0, first_nvm_bank = 0,
1189                         pflash_sector_size_bytes = 0, nvm_sector_size_bytes = 0;
1190         struct target *target = bank->target;
1191         struct kinetis_flash_bank *kinfo = bank->driver_priv;
1192
1193         kinfo->probed = false;
1194
1195         result = target_read_u32(target, SIM_SDID, &kinfo->sim_sdid);
1196         if (result != ERROR_OK)
1197                 return result;
1198
1199         if ((kinfo->sim_sdid & (~KINETIS_SDID_K_SERIES_MASK)) == 0) {
1200                 /* older K-series MCU */
1201                 uint32_t mcu_type = kinfo->sim_sdid & KINETIS_K_SDID_TYPE_MASK;
1202
1203                 switch (mcu_type) {
1204                 case KINETIS_K_SDID_K10_M50:
1205                 case KINETIS_K_SDID_K20_M50:
1206                         /* 1kB sectors */
1207                         pflash_sector_size_bytes = 1<<10;
1208                         nvm_sector_size_bytes = 1<<10;
1209                         num_blocks = 2;
1210                         kinfo->flash_support = FS_PROGRAM_LONGWORD | FS_PROGRAM_SECTOR;
1211                         break;
1212                 case KINETIS_K_SDID_K10_M72:
1213                 case KINETIS_K_SDID_K20_M72:
1214                 case KINETIS_K_SDID_K30_M72:
1215                 case KINETIS_K_SDID_K30_M100:
1216                 case KINETIS_K_SDID_K40_M72:
1217                 case KINETIS_K_SDID_K40_M100:
1218                 case KINETIS_K_SDID_K50_M72:
1219                         /* 2kB sectors, 1kB FlexNVM sectors */
1220                         pflash_sector_size_bytes = 2<<10;
1221                         nvm_sector_size_bytes = 1<<10;
1222                         num_blocks = 2;
1223                         kinfo->flash_support = FS_PROGRAM_LONGWORD | FS_PROGRAM_SECTOR;
1224                         kinfo->max_flash_prog_size = 1<<10;
1225                         break;
1226                 case KINETIS_K_SDID_K10_M100:
1227                 case KINETIS_K_SDID_K20_M100:
1228                 case KINETIS_K_SDID_K11:
1229                 case KINETIS_K_SDID_K12:
1230                 case KINETIS_K_SDID_K21_M50:
1231                 case KINETIS_K_SDID_K22_M50:
1232                 case KINETIS_K_SDID_K51_M72:
1233                 case KINETIS_K_SDID_K53:
1234                 case KINETIS_K_SDID_K60_M100:
1235                         /* 2kB sectors */
1236                         pflash_sector_size_bytes = 2<<10;
1237                         nvm_sector_size_bytes = 2<<10;
1238                         num_blocks = 2;
1239                         kinfo->flash_support = FS_PROGRAM_LONGWORD | FS_PROGRAM_SECTOR;
1240                         break;
1241                 case KINETIS_K_SDID_K21_M120:
1242                 case KINETIS_K_SDID_K22_M120:
1243                         /* 4kB sectors (MK21FN1M0, MK21FX512, MK22FN1M0, MK22FX512) */
1244                         pflash_sector_size_bytes = 4<<10;
1245                         kinfo->max_flash_prog_size = 1<<10;
1246                         nvm_sector_size_bytes = 4<<10;
1247                         num_blocks = 2;
1248                         kinfo->flash_support = FS_PROGRAM_PHRASE | FS_PROGRAM_SECTOR;
1249                         break;
1250                 case KINETIS_K_SDID_K10_M120:
1251                 case KINETIS_K_SDID_K20_M120:
1252                 case KINETIS_K_SDID_K60_M150:
1253                 case KINETIS_K_SDID_K70_M150:
1254                         /* 4kB sectors */
1255                         pflash_sector_size_bytes = 4<<10;
1256                         nvm_sector_size_bytes = 4<<10;
1257                         num_blocks = 4;
1258                         kinfo->flash_support = FS_PROGRAM_PHRASE | FS_PROGRAM_SECTOR;
1259                         break;
1260                 default:
1261                         LOG_ERROR("Unsupported K-family FAMID");
1262                 }
1263         } else {
1264                 /* Newer K-series or KL series MCU */
1265                 switch (kinfo->sim_sdid & KINETIS_SDID_SERIESID_MASK) {
1266                 case KINETIS_SDID_SERIESID_K:
1267                         switch (kinfo->sim_sdid & (KINETIS_SDID_FAMILYID_MASK | KINETIS_SDID_SUBFAMID_MASK)) {
1268                         case KINETIS_SDID_FAMILYID_K0X | KINETIS_SDID_SUBFAMID_KX2:
1269                                 /* K02FN64, K02FN128: FTFA, 2kB sectors */
1270                                 pflash_sector_size_bytes = 2<<10;
1271                                 num_blocks = 1;
1272                                 kinfo->flash_support = FS_PROGRAM_LONGWORD;
1273                                 break;
1274
1275                         case KINETIS_SDID_FAMILYID_K2X | KINETIS_SDID_SUBFAMID_KX2: {
1276                                 /* MK24FN1M reports as K22, this should detect it (according to errata note 1N83J) */
1277                                 uint32_t sopt1;
1278                                 result = target_read_u32(target, SIM_SOPT1, &sopt1);
1279                                 if (result != ERROR_OK)
1280                                         return result;
1281
1282                                 if (((kinfo->sim_sdid & (KINETIS_SDID_DIEID_MASK)) == KINETIS_SDID_DIEID_K24FN1M) &&
1283                                                 ((sopt1 & KINETIS_SOPT1_RAMSIZE_MASK) == KINETIS_SOPT1_RAMSIZE_K24FN1M)) {
1284                                         /* MK24FN1M */
1285                                         pflash_sector_size_bytes = 4<<10;
1286                                         num_blocks = 2;
1287                                         kinfo->flash_support = FS_PROGRAM_PHRASE | FS_PROGRAM_SECTOR;
1288                                         kinfo->max_flash_prog_size = 1<<10;
1289                                         break;
1290                                 }
1291                                 if ((kinfo->sim_sdid & (KINETIS_SDID_DIEID_MASK)) == KINETIS_SDID_DIEID_K22FN128
1292                                         || (kinfo->sim_sdid & (KINETIS_SDID_DIEID_MASK)) == KINETIS_SDID_DIEID_K22FN256
1293                                         || (kinfo->sim_sdid & (KINETIS_SDID_DIEID_MASK)) == KINETIS_SDID_DIEID_K22FN512) {
1294                                         /* K22 with new-style SDID - smaller pflash with FTFA, 2kB sectors */
1295                                         pflash_sector_size_bytes = 2<<10;
1296                                         num_blocks = 2;         /* 1 or 2 blocks */
1297                                         kinfo->flash_support = FS_PROGRAM_LONGWORD;
1298                                         break;
1299                                 }
1300                                 LOG_ERROR("Unsupported Kinetis K22 DIEID");
1301                                 break;
1302                         }
1303                         case KINETIS_SDID_FAMILYID_K2X | KINETIS_SDID_SUBFAMID_KX4:
1304                                 pflash_sector_size_bytes = 4<<10;
1305                                 if ((kinfo->sim_sdid & (KINETIS_SDID_DIEID_MASK)) == KINETIS_SDID_DIEID_K24FN256) {
1306                                         /* K24FN256 - smaller pflash with FTFA */
1307                                         num_blocks = 1;
1308                                         kinfo->flash_support = FS_PROGRAM_LONGWORD;
1309                                         break;
1310                                 }
1311                                 /* K24FN1M without errata 7534 */
1312                                 num_blocks = 2;
1313                                 kinfo->flash_support = FS_PROGRAM_PHRASE | FS_PROGRAM_SECTOR;
1314                                 kinfo->max_flash_prog_size = 1<<10;
1315                                 break;
1316
1317                         case KINETIS_SDID_FAMILYID_K6X | KINETIS_SDID_SUBFAMID_KX3:
1318                         case KINETIS_SDID_FAMILYID_K6X | KINETIS_SDID_SUBFAMID_KX1:     /* errata 7534 - should be K63 */
1319                                 /* K63FN1M0 */
1320                         case KINETIS_SDID_FAMILYID_K6X | KINETIS_SDID_SUBFAMID_KX4:
1321                         case KINETIS_SDID_FAMILYID_K6X | KINETIS_SDID_SUBFAMID_KX2:     /* errata 7534 - should be K64 */
1322                                 /* K64FN1M0, K64FX512 */
1323                                 pflash_sector_size_bytes = 4<<10;
1324                                 nvm_sector_size_bytes = 4<<10;
1325                                 kinfo->max_flash_prog_size = 1<<10;
1326                                 num_blocks = 2;
1327                                 kinfo->flash_support = FS_PROGRAM_PHRASE | FS_PROGRAM_SECTOR;
1328                                 break;
1329
1330                         case KINETIS_SDID_FAMILYID_K2X | KINETIS_SDID_SUBFAMID_KX6:
1331                                 /* K26FN2M0 */
1332                         case KINETIS_SDID_FAMILYID_K6X | KINETIS_SDID_SUBFAMID_KX6:
1333                                 /* K66FN2M0, K66FX1M0 */
1334                                 pflash_sector_size_bytes = 4<<10;
1335                                 nvm_sector_size_bytes = 4<<10;
1336                                 kinfo->max_flash_prog_size = 1<<10;
1337                                 num_blocks = 4;
1338                                 kinfo->flash_support = FS_PROGRAM_PHRASE | FS_PROGRAM_SECTOR;
1339                                 break;
1340                         default:
1341                                 LOG_ERROR("Unsupported Kinetis FAMILYID SUBFAMID");
1342                         }
1343                         break;
1344                 case KINETIS_SDID_SERIESID_KL:
1345                         /* KL-series */
1346                         pflash_sector_size_bytes = 1<<10;
1347                         nvm_sector_size_bytes = 1<<10;
1348                         num_blocks = 1;
1349                         kinfo->flash_support = FS_PROGRAM_LONGWORD;
1350                         break;
1351                 default:
1352                         LOG_ERROR("Unsupported K-series");
1353                 }
1354         }
1355
1356         if (pflash_sector_size_bytes == 0) {
1357                 LOG_ERROR("MCU is unsupported, SDID 0x%08" PRIx32, kinfo->sim_sdid);
1358                 return ERROR_FLASH_OPER_UNSUPPORTED;
1359         }
1360
1361         result = target_read_u32(target, SIM_FCFG1, &kinfo->sim_fcfg1);
1362         if (result != ERROR_OK)
1363                 return result;
1364
1365         result = target_read_u32(target, SIM_FCFG2, &kinfo->sim_fcfg2);
1366         if (result != ERROR_OK)
1367                 return result;
1368
1369         LOG_DEBUG("SDID: 0x%08" PRIX32 " FCFG1: 0x%08" PRIX32 " FCFG2: 0x%08" PRIX32, kinfo->sim_sdid,
1370                         kinfo->sim_fcfg1, kinfo->sim_fcfg2);
1371
1372         fcfg1_nvmsize = (uint8_t)((kinfo->sim_fcfg1 >> 28) & 0x0f);
1373         fcfg1_pfsize = (uint8_t)((kinfo->sim_fcfg1 >> 24) & 0x0f);
1374         fcfg1_eesize = (uint8_t)((kinfo->sim_fcfg1 >> 16) & 0x0f);
1375         fcfg1_depart = (uint8_t)((kinfo->sim_fcfg1 >> 8) & 0x0f);
1376
1377         fcfg2_pflsh = (uint8_t)((kinfo->sim_fcfg2 >> 23) & 0x01);
1378
1379         /* when the PFLSH bit is set, there is no FlexNVM/FlexRAM */
1380         if (!fcfg2_pflsh) {
1381                 switch (fcfg1_nvmsize) {
1382                 case 0x03:
1383                 case 0x05:
1384                 case 0x07:
1385                 case 0x09:
1386                 case 0x0b:
1387                         nvm_size = 1 << (14 + (fcfg1_nvmsize >> 1));
1388                         break;
1389                 case 0x0f:
1390                         if (pflash_sector_size_bytes >= 4<<10)
1391                                 nvm_size = 512<<10;
1392                         else
1393                                 /* K20_100 */
1394                                 nvm_size = 256<<10;
1395                         break;
1396                 default:
1397                         nvm_size = 0;
1398                         break;
1399                 }
1400
1401                 switch (fcfg1_eesize) {
1402                 case 0x00:
1403                 case 0x01:
1404                 case 0x02:
1405                 case 0x03:
1406                 case 0x04:
1407                 case 0x05:
1408                 case 0x06:
1409                 case 0x07:
1410                 case 0x08:
1411                 case 0x09:
1412                         ee_size = (16 << (10 - fcfg1_eesize));
1413                         break;
1414                 default:
1415                         ee_size = 0;
1416                         break;
1417                 }
1418
1419                 switch (fcfg1_depart) {
1420                 case 0x01:
1421                 case 0x02:
1422                 case 0x03:
1423                 case 0x04:
1424                 case 0x05:
1425                 case 0x06:
1426                         df_size = nvm_size - (4096 << fcfg1_depart);
1427                         break;
1428                 case 0x08:
1429                         df_size = 0;
1430                         break;
1431                 case 0x09:
1432                 case 0x0a:
1433                 case 0x0b:
1434                 case 0x0c:
1435                 case 0x0d:
1436                         df_size = 4096 << (fcfg1_depart & 0x7);
1437                         break;
1438                 default:
1439                         df_size = nvm_size;
1440                         break;
1441                 }
1442         }
1443
1444         switch (fcfg1_pfsize) {
1445         case 0x03:
1446         case 0x05:
1447         case 0x07:
1448         case 0x09:
1449         case 0x0b:
1450         case 0x0d:
1451                 pf_size = 1 << (14 + (fcfg1_pfsize >> 1));
1452                 break;
1453         case 0x0f:
1454                 if (pflash_sector_size_bytes >= 4<<10)
1455                         pf_size = 1024<<10;
1456                 else if (fcfg2_pflsh)
1457                         pf_size = 512<<10;
1458                 else
1459                         pf_size = 256<<10;
1460                 break;
1461         default:
1462                 pf_size = 0;
1463                 break;
1464         }
1465
1466         LOG_DEBUG("FlexNVM: %" PRIu32 " PFlash: %" PRIu32 " FlexRAM: %" PRIu32 " PFLSH: %d",
1467                   nvm_size, pf_size, ee_size, fcfg2_pflsh);
1468
1469         num_pflash_blocks = num_blocks / (2 - fcfg2_pflsh);
1470         first_nvm_bank = num_pflash_blocks;
1471         num_nvm_blocks = num_blocks - num_pflash_blocks;
1472
1473         LOG_DEBUG("%d blocks total: %d PFlash, %d FlexNVM",
1474                         num_blocks, num_pflash_blocks, num_nvm_blocks);
1475
1476         LOG_INFO("Probing flash info for bank %d", bank->bank_number);
1477
1478         if ((unsigned)bank->bank_number < num_pflash_blocks) {
1479                 /* pflash, banks start at address zero */
1480                 kinfo->flash_class = FC_PFLASH;
1481                 bank->size = (pf_size / num_pflash_blocks);
1482                 bank->base = 0x00000000 + bank->size * bank->bank_number;
1483                 kinfo->prog_base = bank->base;
1484                 kinfo->sector_size = pflash_sector_size_bytes;
1485                 kinfo->protection_size = pf_size / 32;
1486                 kinfo->protection_block = (32 / num_pflash_blocks) * bank->bank_number;
1487
1488         } else if ((unsigned)bank->bank_number < num_blocks) {
1489                 /* nvm, banks start at address 0x10000000 */
1490                 unsigned nvm_ord = bank->bank_number - first_nvm_bank;
1491                 uint32_t limit;
1492
1493                 kinfo->flash_class = FC_FLEX_NVM;
1494                 bank->size = (nvm_size / num_nvm_blocks);
1495                 bank->base = 0x10000000 + bank->size * nvm_ord;
1496                 kinfo->prog_base = 0x00800000 + bank->size * nvm_ord;
1497                 kinfo->sector_size = nvm_sector_size_bytes;
1498                 if (df_size == 0) {
1499                         kinfo->protection_size = 0;
1500                 } else {
1501                         for (i = df_size; ~i & 1; i >>= 1)
1502                                 ;
1503                         if (i == 1)
1504                                 kinfo->protection_size = df_size / 8;   /* data flash size = 2^^n */
1505                         else
1506                                 kinfo->protection_size = nvm_size / 8;  /* TODO: verify on SF1, not documented in RM */
1507                 }
1508                 kinfo->protection_block = (8 / num_nvm_blocks) * nvm_ord;
1509
1510                 /* EEPROM backup part of FlexNVM is not accessible, use df_size as a limit */
1511                 if (df_size > bank->size * nvm_ord)
1512                         limit = df_size - bank->size * nvm_ord;
1513                 else
1514                         limit = 0;
1515
1516                 if (bank->size > limit) {
1517                         bank->size = limit;
1518                         LOG_DEBUG("FlexNVM bank %d limited to 0x%08" PRIx32 " due to active EEPROM backup",
1519                                 bank->bank_number, limit);
1520                 }
1521
1522         } else if ((unsigned)bank->bank_number == num_blocks) {
1523                 LOG_ERROR("FlexRAM support not yet implemented");
1524                 return ERROR_FLASH_OPER_UNSUPPORTED;
1525         } else {
1526                 LOG_ERROR("Cannot determine parameters for bank %d, only %d banks on device",
1527                                 bank->bank_number, num_blocks);
1528                 return ERROR_FLASH_BANK_INVALID;
1529         }
1530
1531         if (bank->sectors) {
1532                 free(bank->sectors);
1533                 bank->sectors = NULL;
1534         }
1535
1536         if (kinfo->sector_size == 0) {
1537                 LOG_ERROR("Unknown sector size for bank %d", bank->bank_number);
1538                 return ERROR_FLASH_BANK_INVALID;
1539         }
1540
1541         if (kinfo->flash_support & FS_PROGRAM_SECTOR
1542                          && kinfo->max_flash_prog_size == 0) {
1543                 kinfo->max_flash_prog_size = kinfo->sector_size;
1544                 /* Program section size is equal to sector size by default */
1545         }
1546
1547         bank->num_sectors = bank->size / kinfo->sector_size;
1548
1549         if (bank->num_sectors > 0) {
1550                 /* FlexNVM bank can be used for EEPROM backup therefore zero sized */
1551                 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
1552
1553                 for (i = 0; i < bank->num_sectors; i++) {
1554                         bank->sectors[i].offset = offset;
1555                         bank->sectors[i].size = kinfo->sector_size;
1556                         offset += kinfo->sector_size;
1557                         bank->sectors[i].is_erased = -1;
1558                         bank->sectors[i].is_protected = 1;
1559                 }
1560         }
1561
1562         kinfo->probed = true;
1563
1564         return ERROR_OK;
1565 }
1566
1567 static int kinetis_probe(struct flash_bank *bank)
1568 {
1569         if (bank->target->state != TARGET_HALTED) {
1570                 LOG_WARNING("Cannot communicate... target not halted.");
1571                 return ERROR_TARGET_NOT_HALTED;
1572         }
1573
1574         return kinetis_read_part_info(bank);
1575 }
1576
1577 static int kinetis_auto_probe(struct flash_bank *bank)
1578 {
1579         struct kinetis_flash_bank *kinfo = bank->driver_priv;
1580
1581         if (kinfo && kinfo->probed)
1582                 return ERROR_OK;
1583
1584         return kinetis_probe(bank);
1585 }
1586
1587 static int kinetis_info(struct flash_bank *bank, char *buf, int buf_size)
1588 {
1589         const char *bank_class_names[] = {
1590                 "(ANY)", "PFlash", "FlexNVM", "FlexRAM"
1591         };
1592
1593         struct kinetis_flash_bank *kinfo = bank->driver_priv;
1594
1595         (void) snprintf(buf, buf_size,
1596                         "%s driver for %s flash bank %s at 0x%8.8" PRIx32 "",
1597                         bank->driver->name, bank_class_names[kinfo->flash_class],
1598                         bank->name, bank->base);
1599
1600         return ERROR_OK;
1601 }
1602
1603 static int kinetis_blank_check(struct flash_bank *bank)
1604 {
1605         struct kinetis_flash_bank *kinfo = bank->driver_priv;
1606
1607         if (bank->target->state != TARGET_HALTED) {
1608                 LOG_ERROR("Target not halted");
1609                 return ERROR_TARGET_NOT_HALTED;
1610         }
1611
1612         if (kinfo->flash_class == FC_PFLASH || kinfo->flash_class == FC_FLEX_NVM) {
1613                 int result;
1614                 bool block_dirty = false;
1615                 uint8_t ftfx_fstat;
1616
1617                 if (kinfo->flash_class == FC_FLEX_NVM) {
1618                         uint8_t fcfg1_depart = (uint8_t)((kinfo->sim_fcfg1 >> 8) & 0x0f);
1619                         /* block operation cannot be used on FlexNVM when EEPROM backup partition is set */
1620                         if (fcfg1_depart != 0xf && fcfg1_depart != 0)
1621                                 block_dirty = true;
1622                 }
1623
1624                 if (!block_dirty) {
1625                         /* check if whole bank is blank */
1626                         result = kinetis_ftfx_command(bank->target, FTFx_CMD_BLOCKSTAT, kinfo->prog_base,
1627                                                          0, 0, 0, 0,  0, 0, 0, 0, &ftfx_fstat);
1628
1629                         if (result != ERROR_OK || (ftfx_fstat & 0x01))
1630                                 block_dirty = true;
1631                 }
1632
1633                 if (block_dirty) {
1634                         /* the whole bank is not erased, check sector-by-sector */
1635                         int i;
1636                         for (i = 0; i < bank->num_sectors; i++) {
1637                                 /* normal margin */
1638                                 result = kinetis_ftfx_command(bank->target, FTFx_CMD_SECTSTAT,
1639                                                 kinfo->prog_base + bank->sectors[i].offset,
1640                                                 1, 0, 0, 0,  0, 0, 0, 0, &ftfx_fstat);
1641
1642                                 if (result == ERROR_OK) {
1643                                         bank->sectors[i].is_erased = !(ftfx_fstat & 0x01);
1644                                 } else {
1645                                         LOG_DEBUG("Ignoring errored PFlash sector blank-check");
1646                                         bank->sectors[i].is_erased = -1;
1647                                 }
1648                         }
1649                 } else {
1650                         /* the whole bank is erased, update all sectors */
1651                         int i;
1652                         for (i = 0; i < bank->num_sectors; i++)
1653                                 bank->sectors[i].is_erased = 1;
1654                 }
1655         } else {
1656                 LOG_WARNING("kinetis_blank_check not supported yet for FlexRAM");
1657                 return ERROR_FLASH_OPERATION_FAILED;
1658         }
1659
1660         return ERROR_OK;
1661 }
1662
1663 static const struct command_registration kinetis_securtiy_command_handlers[] = {
1664         {
1665                 .name = "check_security",
1666                 .mode = COMMAND_EXEC,
1667                 .help = "",
1668                 .usage = "",
1669                 .handler = kinetis_check_flash_security_status,
1670         },
1671         {
1672                 .name = "mass_erase",
1673                 .mode = COMMAND_EXEC,
1674                 .help = "",
1675                 .usage = "",
1676                 .handler = kinetis_mdm_mass_erase,
1677         },
1678         COMMAND_REGISTRATION_DONE
1679 };
1680
1681 static const struct command_registration kinetis_exec_command_handlers[] = {
1682         {
1683                 .name = "mdm",
1684                 .mode = COMMAND_ANY,
1685                 .help = "",
1686                 .usage = "",
1687                 .chain = kinetis_securtiy_command_handlers,
1688         },
1689         {
1690                 .name = "disable_wdog",
1691                 .mode = COMMAND_EXEC,
1692                 .help = "Disable the watchdog timer",
1693                 .usage = "",
1694                 .handler = kinetis_disable_wdog_handler,
1695         },
1696         COMMAND_REGISTRATION_DONE
1697 };
1698
1699 static const struct command_registration kinetis_command_handler[] = {
1700         {
1701                 .name = "kinetis",
1702                 .mode = COMMAND_ANY,
1703                 .help = "kinetis flash controller commands",
1704                 .usage = "",
1705                 .chain = kinetis_exec_command_handlers,
1706         },
1707         COMMAND_REGISTRATION_DONE
1708 };
1709
1710
1711
1712 struct flash_driver kinetis_flash = {
1713         .name = "kinetis",
1714         .commands = kinetis_command_handler,
1715         .flash_bank_command = kinetis_flash_bank_command,
1716         .erase = kinetis_erase,
1717         .protect = kinetis_protect,
1718         .write = kinetis_write,
1719         .read = default_flash_read,
1720         .probe = kinetis_probe,
1721         .auto_probe = kinetis_auto_probe,
1722         .erase_check = kinetis_blank_check,
1723         .protect_check = kinetis_protect_check,
1724         .info = kinetis_info,
1725 };