git.gag.com Git - fw/openocd/blob - src/flash/nor/nrf5.c

   1 /***************************************************************************
   2  *   Copyright (C) 2013 Synapse Product Development                        *
   3  *   Andrey Smirnov <andrew.smironv@gmail.com>                             *
   4  *   Angus Gratton <gus@projectgus.com>                                    *
   5  *   Erdem U. Altunyurt <spamjunkeater@gmail.com>                          *
   6  *                                                                         *
   7  *   This program is free software; you can redistribute it and/or modify  *
   8  *   it under the terms of the GNU General Public License as published by  *
   9  *   the Free Software Foundation; either version 2 of the License, or     *
  10  *   (at your option) any later version.                                   *
  11  *                                                                         *
  12  *   This program is distributed in the hope that it will be useful,       *
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  15  *   GNU General Public License for more details.                          *
  16  *                                                                         *
  17  *   You should have received a copy of the GNU General Public License     *
  18  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  19  ***************************************************************************/
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24
  25 #include "imp.h"
  26 #include <target/algorithm.h>
  27 #include <target/armv7m.h>
  28 #include <helper/types.h>
  29 #include <helper/time_support.h>
  30
  31 enum {
  32         NRF5_FLASH_BASE = 0x00000000,
  33 };
  34
  35 enum nrf5_ficr_registers {
  36         NRF5_FICR_BASE = 0x10000000, /* Factory Information Configuration Registers */
  37
  38 #define NRF5_FICR_REG(offset) (NRF5_FICR_BASE + offset)
  39
  40         NRF5_FICR_CODEPAGESIZE          = NRF5_FICR_REG(0x010),
  41         NRF5_FICR_CODESIZE              = NRF5_FICR_REG(0x014),
  42
  43         NRF51_FICR_CLENR0               = NRF5_FICR_REG(0x028),
  44         NRF51_FICR_PPFC                 = NRF5_FICR_REG(0x02C),
  45         NRF51_FICR_NUMRAMBLOCK          = NRF5_FICR_REG(0x034),
  46         NRF51_FICR_SIZERAMBLOCK0        = NRF5_FICR_REG(0x038),
  47         NRF51_FICR_SIZERAMBLOCK1        = NRF5_FICR_REG(0x03C),
  48         NRF51_FICR_SIZERAMBLOCK2        = NRF5_FICR_REG(0x040),
  49         NRF51_FICR_SIZERAMBLOCK3        = NRF5_FICR_REG(0x044),
  50
  51         NRF5_FICR_CONFIGID              = NRF5_FICR_REG(0x05C),
  52         NRF5_FICR_DEVICEID0             = NRF5_FICR_REG(0x060),
  53         NRF5_FICR_DEVICEID1             = NRF5_FICR_REG(0x064),
  54         NRF5_FICR_ER0                   = NRF5_FICR_REG(0x080),
  55         NRF5_FICR_ER1                   = NRF5_FICR_REG(0x084),
  56         NRF5_FICR_ER2                   = NRF5_FICR_REG(0x088),
  57         NRF5_FICR_ER3                   = NRF5_FICR_REG(0x08C),
  58         NRF5_FICR_IR0                   = NRF5_FICR_REG(0x090),
  59         NRF5_FICR_IR1                   = NRF5_FICR_REG(0x094),
  60         NRF5_FICR_IR2                   = NRF5_FICR_REG(0x098),
  61         NRF5_FICR_IR3                   = NRF5_FICR_REG(0x09C),
  62         NRF5_FICR_DEVICEADDRTYPE        = NRF5_FICR_REG(0x0A0),
  63         NRF5_FICR_DEVICEADDR0           = NRF5_FICR_REG(0x0A4),
  64         NRF5_FICR_DEVICEADDR1           = NRF5_FICR_REG(0x0A8),
  65
  66         NRF51_FICR_OVERRIDEN            = NRF5_FICR_REG(0x0AC),
  67         NRF51_FICR_NRF_1MBIT0           = NRF5_FICR_REG(0x0B0),
  68         NRF51_FICR_NRF_1MBIT1           = NRF5_FICR_REG(0x0B4),
  69         NRF51_FICR_NRF_1MBIT2           = NRF5_FICR_REG(0x0B8),
  70         NRF51_FICR_NRF_1MBIT3           = NRF5_FICR_REG(0x0BC),
  71         NRF51_FICR_NRF_1MBIT4           = NRF5_FICR_REG(0x0C0),
  72         NRF51_FICR_BLE_1MBIT0           = NRF5_FICR_REG(0x0EC),
  73         NRF51_FICR_BLE_1MBIT1           = NRF5_FICR_REG(0x0F0),
  74         NRF51_FICR_BLE_1MBIT2           = NRF5_FICR_REG(0x0F4),
  75         NRF51_FICR_BLE_1MBIT3           = NRF5_FICR_REG(0x0F8),
  76         NRF51_FICR_BLE_1MBIT4           = NRF5_FICR_REG(0x0FC),
  77
  78         /* Following registers are available on nRF52 and on nRF51 since rev 3 */
  79         NRF5_FICR_INFO_PART                     = NRF5_FICR_REG(0x100),
  80         NRF5_FICR_INFO_VARIANT          = NRF5_FICR_REG(0x104),
  81         NRF5_FICR_INFO_PACKAGE          = NRF5_FICR_REG(0x108),
  82         NRF5_FICR_INFO_RAM                      = NRF5_FICR_REG(0x10C),
  83         NRF5_FICR_INFO_FLASH            = NRF5_FICR_REG(0x110),
  84 };
  85
  86 enum nrf5_uicr_registers {
  87         NRF5_UICR_BASE = 0x10001000, /* User Information
  88                                        * Configuration Regsters */
  89
  90 #define NRF5_UICR_REG(offset) (NRF5_UICR_BASE + offset)
  91
  92         NRF51_UICR_CLENR0       = NRF5_UICR_REG(0x000),
  93         NRF51_UICR_RBPCONF      = NRF5_UICR_REG(0x004),
  94         NRF51_UICR_XTALFREQ     = NRF5_UICR_REG(0x008),
  95         NRF51_UICR_FWID         = NRF5_UICR_REG(0x010),
  96 };
  97
  98 enum nrf5_nvmc_registers {
  99         NRF5_NVMC_BASE = 0x4001E000, /* Non-Volatile Memory
 100                                        * Controller Registers */
 101
 102 #define NRF5_NVMC_REG(offset) (NRF5_NVMC_BASE + offset)
 103
 104         NRF5_NVMC_READY = NRF5_NVMC_REG(0x400),
 105         NRF5_NVMC_CONFIG        = NRF5_NVMC_REG(0x504),
 106         NRF5_NVMC_ERASEPAGE     = NRF5_NVMC_REG(0x508),
 107         NRF5_NVMC_ERASEALL      = NRF5_NVMC_REG(0x50C),
 108         NRF5_NVMC_ERASEUICR     = NRF5_NVMC_REG(0x514),
 109
 110         NRF5_BPROT_BASE = 0x40000000,
 111 };
 112
 113 enum nrf5_nvmc_config_bits {
 114         NRF5_NVMC_CONFIG_REN = 0x00,
 115         NRF5_NVMC_CONFIG_WEN = 0x01,
 116         NRF5_NVMC_CONFIG_EEN = 0x02,
 117
 118 };
 119
 120 struct nrf52_ficr_info {
 121         uint32_t part;
 122         uint32_t variant;
 123         uint32_t package;
 124         uint32_t ram;
 125         uint32_t flash;
 126 };
 127
 128 enum nrf5_features {
 129         NRF5_FEATURE_SERIES_51  = 1 << 0,
 130         NRF5_FEATURE_SERIES_52  = 1 << 1,
 131         NRF5_FEATURE_BPROT              = 1 << 2,
 132         NRF5_FEATURE_ACL_PROT   = 1 << 3,
 133 };
 134
 135 struct nrf5_device_spec {
 136         uint16_t hwid;
 137         const char *part;
 138         const char *variant;
 139         const char *build_code;
 140         unsigned int flash_size_kb;
 141         enum nrf5_features features;
 142 };
 143
 144 struct nrf5_info {
 145         uint32_t refcount;
 146
 147         struct nrf5_bank {
 148                 struct nrf5_info *chip;
 149                 bool probed;
 150         } bank[2];
 151         struct target *target;
 152
 153         /* chip identification stored in nrf5_probe() for use in nrf5_info() */
 154         bool ficr_info_valid;
 155         struct nrf52_ficr_info ficr_info;
 156         const struct nrf5_device_spec *spec;
 157         uint32_t hwid;
 158         enum nrf5_features features;
 159         unsigned int flash_size_kb;
 160 };
 161
 162 #define NRF51_DEVICE_DEF(id, pt, var, bcode, fsize) \
 163 {                                                   \
 164 .hwid          = (id),                              \
 165 .part          = pt,                                \
 166 .variant       = var,                               \
 167 .build_code    = bcode,                             \
 168 .flash_size_kb = (fsize),                           \
 169 .features      = NRF5_FEATURE_SERIES_51,            \
 170 }
 171
 172 #define NRF5_DEVICE_DEF(id, pt, var, bcode, fsize, features) \
 173 {                                                   \
 174 .hwid          = (id),                              \
 175 .part          = pt,                                \
 176 .variant       = var,                               \
 177 .build_code    = bcode,                             \
 178 .flash_size_kb = (fsize),                           \
 179 .features      = features,                          \
 180 }
 181
 182 /* The known devices table below is derived from the "nRF5x series
 183  * compatibility matrix" documents, which can be found in the "DocLib" of
 184  * nordic:
 185  *
 186  * https://www.nordicsemi.com/DocLib/Content/Comp_Matrix/nRF51/latest/COMP/nrf51/nRF51422_ic_revision_overview
 187  * https://www.nordicsemi.com/DocLib/Content/Comp_Matrix/nRF51/latest/COMP/nrf51/nRF51822_ic_revision_overview
 188  * https://www.nordicsemi.com/DocLib/Content/Comp_Matrix/nRF51/latest/COMP/nrf51/nRF51824_ic_revision_overview
 189  * https://www.nordicsemi.com/DocLib/Content/Comp_Matrix/nRF52810/latest/COMP/nrf52810/nRF52810_ic_revision_overview
 190  * https://www.nordicsemi.com/DocLib/Content/Comp_Matrix/nRF52832/latest/COMP/nrf52832/ic_revision_overview
 191  * https://www.nordicsemi.com/DocLib/Content/Comp_Matrix/nRF52840/latest/COMP/nrf52840/nRF52840_ic_revision_overview
 192  *
 193  * Up to date with Matrix v2.0, plus some additional HWIDs.
 194  *
 195  * The additional HWIDs apply where the build code in the matrix is
 196  * shown as Gx0, Bx0, etc. In these cases the HWID in the matrix is
 197  * for x==0, x!=0 means different (unspecified) HWIDs.
 198  */
 199 static const struct nrf5_device_spec nrf5_known_devices_table[] = {
 200         /* nRF51822 Devices (IC rev 1). */
 201         NRF51_DEVICE_DEF(0x001D, "51822", "QFAA", "CA/C0", 256),
 202         NRF51_DEVICE_DEF(0x0026, "51822", "QFAB", "AA",    128),
 203         NRF51_DEVICE_DEF(0x0027, "51822", "QFAB", "A0",    128),
 204         NRF51_DEVICE_DEF(0x0020, "51822", "CEAA", "BA",    256),
 205         NRF51_DEVICE_DEF(0x002F, "51822", "CEAA", "B0",    256),
 206
 207         /* Some early nRF51-DK (PCA10028) & nRF51-Dongle (PCA10031) boards
 208            with built-in jlink seem to use engineering samples not listed
 209            in the nRF51 Series Compatibility Matrix V1.0. */
 210         NRF51_DEVICE_DEF(0x0071, "51822", "QFAC", "AB",    256),
 211
 212         /* nRF51822 Devices (IC rev 2). */
 213         NRF51_DEVICE_DEF(0x002A, "51822", "QFAA", "FA0",   256),
 214         NRF51_DEVICE_DEF(0x0044, "51822", "QFAA", "GC0",   256),
 215         NRF51_DEVICE_DEF(0x003C, "51822", "QFAA", "G0",    256),
 216         NRF51_DEVICE_DEF(0x0057, "51822", "QFAA", "G2",    256),
 217         NRF51_DEVICE_DEF(0x0058, "51822", "QFAA", "G3",    256),
 218         NRF51_DEVICE_DEF(0x004C, "51822", "QFAB", "B0",    128),
 219         NRF51_DEVICE_DEF(0x0040, "51822", "CEAA", "CA0",   256),
 220         NRF51_DEVICE_DEF(0x0047, "51822", "CEAA", "DA0",   256),
 221         NRF51_DEVICE_DEF(0x004D, "51822", "CEAA", "D00",   256),
 222
 223         /* nRF51822 Devices (IC rev 3). */
 224         NRF51_DEVICE_DEF(0x0072, "51822", "QFAA", "H0",    256),
 225         NRF51_DEVICE_DEF(0x00D1, "51822", "QFAA", "H2",    256),
 226         NRF51_DEVICE_DEF(0x007B, "51822", "QFAB", "C0",    128),
 227         NRF51_DEVICE_DEF(0x0083, "51822", "QFAC", "A0",    256),
 228         NRF51_DEVICE_DEF(0x0084, "51822", "QFAC", "A1",    256),
 229         NRF51_DEVICE_DEF(0x007D, "51822", "CDAB", "A0",    128),
 230         NRF51_DEVICE_DEF(0x0079, "51822", "CEAA", "E0",    256),
 231         NRF51_DEVICE_DEF(0x0087, "51822", "CFAC", "A0",    256),
 232         NRF51_DEVICE_DEF(0x008F, "51822", "QFAA", "H1",    256),
 233
 234         /* nRF51422 Devices (IC rev 1). */
 235         NRF51_DEVICE_DEF(0x001E, "51422", "QFAA", "CA",    256),
 236         NRF51_DEVICE_DEF(0x0024, "51422", "QFAA", "C0",    256),
 237         NRF51_DEVICE_DEF(0x0031, "51422", "CEAA", "A0A",   256),
 238
 239         /* nRF51422 Devices (IC rev 2). */
 240         NRF51_DEVICE_DEF(0x002D, "51422", "QFAA", "DAA",   256),
 241         NRF51_DEVICE_DEF(0x002E, "51422", "QFAA", "E0",    256),
 242         NRF51_DEVICE_DEF(0x0061, "51422", "QFAB", "A00",   128),
 243         NRF51_DEVICE_DEF(0x0050, "51422", "CEAA", "B0",    256),
 244
 245         /* nRF51422 Devices (IC rev 3). */
 246         NRF51_DEVICE_DEF(0x0073, "51422", "QFAA", "F0",    256),
 247         NRF51_DEVICE_DEF(0x007C, "51422", "QFAB", "B0",    128),
 248         NRF51_DEVICE_DEF(0x0085, "51422", "QFAC", "A0",    256),
 249         NRF51_DEVICE_DEF(0x0086, "51422", "QFAC", "A1",    256),
 250         NRF51_DEVICE_DEF(0x007E, "51422", "CDAB", "A0",    128),
 251         NRF51_DEVICE_DEF(0x007A, "51422", "CEAA", "C0",    256),
 252         NRF51_DEVICE_DEF(0x0088, "51422", "CFAC", "A0",    256),
 253
 254         /* The driver fully autodects nRF52 series devices by FICR INFO,
 255          * no need for nRF52xxx HWIDs in this table */
 256 #if 0
 257         /* nRF52810 Devices */
 258         NRF5_DEVICE_DEF(0x0142, "52810", "QFAA", "B0",    192,  NRF5_FEATURE_SERIES_52 | NRF5_FEATURE_BPROT),
 259         NRF5_DEVICE_DEF(0x0143, "52810", "QCAA", "C0",    192,  NRF5_FEATURE_SERIES_52 | NRF5_FEATURE_BPROT),
 260
 261         /* nRF52832 Devices */
 262         NRF5_DEVICE_DEF(0x00C7, "52832", "QFAA", "B0",    512,  NRF5_FEATURE_SERIES_52 | NRF5_FEATURE_BPROT),
 263         NRF5_DEVICE_DEF(0x0139, "52832", "QFAA", "E0",    512,  NRF5_FEATURE_SERIES_52 | NRF5_FEATURE_BPROT),
 264         NRF5_DEVICE_DEF(0x00E3, "52832", "CIAA", "B0",    512,  NRF5_FEATURE_SERIES_52 | NRF5_FEATURE_BPROT),
 265
 266         /* nRF52840 Devices */
 267         NRF5_DEVICE_DEF(0x0150, "52840", "QIAA", "C0",    1024, NRF5_FEATURE_SERIES_52 | NRF5_FEATURE_ACL_PROT),
 268 #endif
 269 };
 270
 271 struct nrf5_device_package {
 272         uint32_t package;
 273         const char *code;
 274 };
 275
 276 /* Newer devices have FICR INFO.PACKAGE.
 277  * This table converts its value to two character code */
 278 static const struct nrf5_device_package nrf5_packages_table[] = {
 279         { 0x2000, "QF" },
 280         { 0x2001, "CH" },
 281         { 0x2002, "CI" },
 282         { 0x2005, "CK" },
 283 };
 284
 285 static int nrf5_bank_is_probed(struct flash_bank *bank)
 286 {
 287         struct nrf5_bank *nbank = bank->driver_priv;
 288
 289         assert(nbank != NULL);
 290
 291         return nbank->probed;
 292 }
 293 static int nrf5_probe(struct flash_bank *bank);
 294
 295 static int nrf5_get_probed_chip_if_halted(struct flash_bank *bank, struct nrf5_info **chip)
 296 {
 297         if (bank->target->state != TARGET_HALTED) {
 298                 LOG_ERROR("Target not halted");
 299                 return ERROR_TARGET_NOT_HALTED;
 300         }
 301
 302         struct nrf5_bank *nbank = bank->driver_priv;
 303         *chip = nbank->chip;
 304
 305         int probed = nrf5_bank_is_probed(bank);
 306         if (probed < 0)
 307                 return probed;
 308         else if (!probed)
 309                 return nrf5_probe(bank);
 310         else
 311                 return ERROR_OK;
 312 }
 313
 314 static int nrf5_wait_for_nvmc(struct nrf5_info *chip)
 315 {
 316         uint32_t ready;
 317         int res;
 318         int timeout_ms = 340;
 319         int64_t ts_start = timeval_ms();
 320
 321         do {
 322                 res = target_read_u32(chip->target, NRF5_NVMC_READY, &ready);
 323                 if (res != ERROR_OK) {
 324                         LOG_ERROR("Couldn't read NVMC_READY register");
 325                         return res;
 326                 }
 327
 328                 if (ready == 0x00000001)
 329                         return ERROR_OK;
 330
 331                 keep_alive();
 332
 333         } while ((timeval_ms()-ts_start) < timeout_ms);
 334
 335         LOG_DEBUG("Timed out waiting for NVMC_READY");
 336         return ERROR_FLASH_BUSY;
 337 }
 338
 339 static int nrf5_nvmc_erase_enable(struct nrf5_info *chip)
 340 {
 341         int res;
 342         res = target_write_u32(chip->target,
 343                                NRF5_NVMC_CONFIG,
 344                                NRF5_NVMC_CONFIG_EEN);
 345
 346         if (res != ERROR_OK) {
 347                 LOG_ERROR("Failed to enable erase operation");
 348                 return res;
 349         }
 350
 351         /*
 352           According to NVMC examples in Nordic SDK busy status must be
 353           checked after writing to NVMC_CONFIG
 354          */
 355         res = nrf5_wait_for_nvmc(chip);
 356         if (res != ERROR_OK)
 357                 LOG_ERROR("Erase enable did not complete");
 358
 359         return res;
 360 }
 361
 362 static int nrf5_nvmc_write_enable(struct nrf5_info *chip)
 363 {
 364         int res;
 365         res = target_write_u32(chip->target,
 366                                NRF5_NVMC_CONFIG,
 367                                NRF5_NVMC_CONFIG_WEN);
 368
 369         if (res != ERROR_OK) {
 370                 LOG_ERROR("Failed to enable write operation");
 371                 return res;
 372         }
 373
 374         /*
 375           According to NVMC examples in Nordic SDK busy status must be
 376           checked after writing to NVMC_CONFIG
 377          */
 378         res = nrf5_wait_for_nvmc(chip);
 379         if (res != ERROR_OK)
 380                 LOG_ERROR("Write enable did not complete");
 381
 382         return res;
 383 }
 384
 385 static int nrf5_nvmc_read_only(struct nrf5_info *chip)
 386 {
 387         int res;
 388         res = target_write_u32(chip->target,
 389                                NRF5_NVMC_CONFIG,
 390                                NRF5_NVMC_CONFIG_REN);
 391
 392         if (res != ERROR_OK) {
 393                 LOG_ERROR("Failed to enable read-only operation");
 394                 return res;
 395         }
 396         /*
 397           According to NVMC examples in Nordic SDK busy status must be
 398           checked after writing to NVMC_CONFIG
 399          */
 400         res = nrf5_wait_for_nvmc(chip);
 401         if (res != ERROR_OK)
 402                 LOG_ERROR("Read only enable did not complete");
 403
 404         return res;
 405 }
 406
 407 static int nrf5_nvmc_generic_erase(struct nrf5_info *chip,
 408                                uint32_t erase_register, uint32_t erase_value)
 409 {
 410         int res;
 411
 412         res = nrf5_nvmc_erase_enable(chip);
 413         if (res != ERROR_OK)
 414                 goto error;
 415
 416         res = target_write_u32(chip->target,
 417                                erase_register,
 418                                erase_value);
 419         if (res != ERROR_OK)
 420                 goto set_read_only;
 421
 422         res = nrf5_wait_for_nvmc(chip);
 423         if (res != ERROR_OK)
 424                 goto set_read_only;
 425
 426         return nrf5_nvmc_read_only(chip);
 427
 428 set_read_only:
 429         nrf5_nvmc_read_only(chip);
 430 error:
 431         LOG_ERROR("Failed to erase reg: 0x%08"PRIx32" val: 0x%08"PRIx32,
 432                   erase_register, erase_value);
 433         return ERROR_FAIL;
 434 }
 435
 436 static int nrf5_protect_check_bprot(struct flash_bank *bank)
 437 {
 438         struct nrf5_bank *nbank = bank->driver_priv;
 439         struct nrf5_info *chip = nbank->chip;
 440
 441         assert(chip != NULL);
 442
 443         static uint32_t nrf5_bprot_offsets[4] = { 0x600, 0x604, 0x610, 0x614 };
 444         uint32_t bprot_reg = 0;
 445         int res;
 446
 447         for (int i = 0; i < bank->num_sectors; i++) {
 448                 unsigned int bit = i % 32;
 449                 if (bit == 0) {
 450                         unsigned int n_reg = i / 32;
 451                         if (n_reg >= ARRAY_SIZE(nrf5_bprot_offsets))
 452                                 break;
 453
 454                         res = target_read_u32(chip->target, NRF5_BPROT_BASE + nrf5_bprot_offsets[n_reg], &bprot_reg);
 455                         if (res != ERROR_OK)
 456                                 return res;
 457                 }
 458                 bank->sectors[i].is_protected = (bprot_reg & (1 << bit)) ? 1 : 0;
 459         }
 460         return ERROR_OK;
 461 }
 462
 463 static int nrf5_protect_check(struct flash_bank *bank)
 464 {
 465         int res;
 466         uint32_t clenr0;
 467
 468         /* UICR cannot be write protected so just return early */
 469         if (bank->base == NRF5_UICR_BASE)
 470                 return ERROR_OK;
 471
 472         struct nrf5_bank *nbank = bank->driver_priv;
 473         struct nrf5_info *chip = nbank->chip;
 474
 475         assert(chip != NULL);
 476
 477         if (chip->features & NRF5_FEATURE_BPROT)
 478                 return nrf5_protect_check_bprot(bank);
 479
 480         if (!(chip->features & NRF5_FEATURE_SERIES_51)) {
 481                 LOG_WARNING("Flash protection of this nRF device is not supported");
 482                 return ERROR_FLASH_OPER_UNSUPPORTED;
 483         }
 484
 485         res = target_read_u32(chip->target, NRF51_FICR_CLENR0,
 486                               &clenr0);
 487         if (res != ERROR_OK) {
 488                 LOG_ERROR("Couldn't read code region 0 size[FICR]");
 489                 return res;
 490         }
 491
 492         if (clenr0 == 0xFFFFFFFF) {
 493                 res = target_read_u32(chip->target, NRF51_UICR_CLENR0,
 494                                       &clenr0);
 495                 if (res != ERROR_OK) {
 496                         LOG_ERROR("Couldn't read code region 0 size[UICR]");
 497                         return res;
 498                 }
 499         }
 500
 501         for (int i = 0; i < bank->num_sectors; i++)
 502                 bank->sectors[i].is_protected =
 503                         clenr0 != 0xFFFFFFFF && bank->sectors[i].offset < clenr0;
 504
 505         return ERROR_OK;
 506 }
 507
 508 static int nrf5_protect(struct flash_bank *bank, int set, int first, int last)
 509 {
 510         int res;
 511         uint32_t clenr0, ppfc;
 512         struct nrf5_info *chip;
 513
 514         /* UICR cannot be write protected so just bail out early */
 515         if (bank->base == NRF5_UICR_BASE)
 516                 return ERROR_FAIL;
 517
 518         res = nrf5_get_probed_chip_if_halted(bank, &chip);
 519         if (res != ERROR_OK)
 520                 return res;
 521
 522         if (!(chip->features & NRF5_FEATURE_SERIES_51)) {
 523                 LOG_ERROR("Flash protection setting of this nRF device is not supported");
 524                 return ERROR_FLASH_OPER_UNSUPPORTED;
 525         }
 526
 527         if (first != 0) {
 528                 LOG_ERROR("Code region 0 must start at the begining of the bank");
 529                 return ERROR_FAIL;
 530         }
 531
 532         res = target_read_u32(chip->target, NRF51_FICR_PPFC,
 533                               &ppfc);
 534         if (res != ERROR_OK) {
 535                 LOG_ERROR("Couldn't read PPFC register");
 536                 return res;
 537         }
 538
 539         if ((ppfc & 0xFF) == 0x00) {
 540                 LOG_ERROR("Code region 0 size was pre-programmed at the factory, can't change flash protection settings");
 541                 return ERROR_FAIL;
 542         }
 543
 544         res = target_read_u32(chip->target, NRF51_UICR_CLENR0,
 545                               &clenr0);
 546         if (res != ERROR_OK) {
 547                 LOG_ERROR("Couldn't read code region 0 size[UICR]");
 548                 return res;
 549         }
 550
 551         if (clenr0 == 0xFFFFFFFF) {
 552                 res = target_write_u32(chip->target, NRF51_UICR_CLENR0,
 553                                        clenr0);
 554                 if (res != ERROR_OK) {
 555                         LOG_ERROR("Couldn't write code region 0 size[UICR]");
 556                         return res;
 557                 }
 558
 559         } else {
 560                 LOG_ERROR("You need to perform chip erase before changing the protection settings");
 561         }
 562
 563         nrf5_protect_check(bank);
 564
 565         return ERROR_OK;
 566 }
 567
 568 static bool nrf5_info_variant_to_str(uint32_t variant, char *bf)
 569 {
 570         h_u32_to_be((uint8_t *)bf, variant);
 571         bf[4] = '\0';
 572         if (isalnum(bf[0]) && isalnum(bf[1]) && isalnum(bf[2]) && isalnum(bf[3]))
 573                 return true;
 574
 575         strcpy(bf, "xxxx");
 576         return false;
 577 }
 578
 579 static const char *nrf5_decode_info_package(uint32_t package)
 580 {
 581         for (size_t i = 0; i < ARRAY_SIZE(nrf5_packages_table); i++) {
 582                 if (nrf5_packages_table[i].package == package)
 583                         return nrf5_packages_table[i].code;
 584         }
 585         return "xx";
 586 }
 587
 588 static int nrf5_info(struct flash_bank *bank, char *buf, int buf_size)
 589 {
 590         struct nrf5_bank *nbank = bank->driver_priv;
 591         struct nrf5_info *chip = nbank->chip;
 592
 593         if (chip->spec) {
 594                 snprintf(buf, buf_size,
 595                                 "nRF%s-%s(build code: %s) %ukB Flash",
 596                                 chip->spec->part, chip->spec->variant, chip->spec->build_code,
 597                                 chip->flash_size_kb);
 598
 599         } else if (chip->ficr_info_valid) {
 600                 char variant[5];
 601                 nrf5_info_variant_to_str(chip->ficr_info.variant, variant);
 602                 snprintf(buf, buf_size,
 603                                 "nRF%" PRIx32 "-%s%.2s(build code: %s) %" PRIu32
 604                                 "kB Flash, %" PRIu32 "kB RAM",
 605                                 chip->ficr_info.part,
 606                                 nrf5_decode_info_package(chip->ficr_info.package),
 607                                 variant, &variant[2],
 608                                 chip->flash_size_kb,
 609                                 chip->ficr_info.ram);
 610
 611         } else {
 612                 snprintf(buf, buf_size, "nRF51xxx (HWID 0x%04" PRIx16 ") %ukB Flash",
 613                                 chip->hwid, chip->flash_size_kb);
 614         }
 615         return ERROR_OK;
 616 }
 617
 618 static int nrf5_read_ficr_info(struct nrf5_info *chip)
 619 {
 620         int res;
 621         struct target *target = chip->target;
 622
 623         chip->ficr_info_valid = false;
 624
 625         res = target_read_u32(target, NRF5_FICR_INFO_PART, &chip->ficr_info.part);
 626         if (res != ERROR_OK) {
 627                 LOG_DEBUG("Couldn't read FICR INFO.PART register");
 628                 return res;
 629         }
 630
 631         uint32_t series = chip->ficr_info.part & 0xfffff000;
 632         switch (series) {
 633         case 0x51000:
 634                 chip->features = NRF5_FEATURE_SERIES_51;
 635                 break;
 636
 637         case 0x52000:
 638                 chip->features = NRF5_FEATURE_SERIES_52;
 639
 640                 switch (chip->ficr_info.part) {
 641                 case 0x52810:
 642                 case 0x52832:
 643                         chip->features |= NRF5_FEATURE_BPROT;
 644                         break;
 645
 646                 case 0x52840:
 647                         chip->features |= NRF5_FEATURE_ACL_PROT;
 648                         break;
 649                 }
 650                 break;
 651
 652         default:
 653                 LOG_DEBUG("FICR INFO likely not implemented. Invalid PART value 0x%08"
 654                                 PRIx32, chip->ficr_info.part);
 655                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 656         }
 657
 658         /* Now we know the device has FICR INFO filled by something relevant:
 659          * Although it is not documented, the tested nRF51 rev 3 devices
 660          * have FICR INFO.PART, RAM and FLASH of the same format as nRF52.
 661          * VARIANT and PACKAGE coding is unknown for a nRF51 device.
 662          * nRF52 devices have FICR INFO documented and always filled. */
 663
 664         res = target_read_u32(target, NRF5_FICR_INFO_VARIANT, &chip->ficr_info.variant);
 665         if (res != ERROR_OK)
 666                 return res;
 667
 668         res = target_read_u32(target, NRF5_FICR_INFO_PACKAGE, &chip->ficr_info.package);
 669         if (res != ERROR_OK)
 670                 return res;
 671
 672         res = target_read_u32(target, NRF5_FICR_INFO_RAM, &chip->ficr_info.ram);
 673         if (res != ERROR_OK)
 674                 return res;
 675
 676         res = target_read_u32(target, NRF5_FICR_INFO_FLASH, &chip->ficr_info.flash);
 677         if (res != ERROR_OK)
 678                 return res;
 679
 680         chip->ficr_info_valid = true;
 681         return ERROR_OK;
 682 }
 683
 684 static int nrf5_probe(struct flash_bank *bank)
 685 {
 686         int res;
 687         struct nrf5_bank *nbank = bank->driver_priv;
 688         struct nrf5_info *chip = nbank->chip;
 689         struct target *target = chip->target;
 690
 691         res = target_read_u32(target, NRF5_FICR_CONFIGID, &chip->hwid);
 692         if (res != ERROR_OK) {
 693                 LOG_ERROR("Couldn't read CONFIGID register");
 694                 return res;
 695         }
 696
 697         chip->hwid &= 0xFFFF;   /* HWID is stored in the lower two
 698                          * bytes of the CONFIGID register */
 699
 700         /* guess a nRF51 series if the device has no FICR INFO and we don't know HWID */
 701         chip->features = NRF5_FEATURE_SERIES_51;
 702
 703         /* Don't bail out on error for the case that some old engineering
 704          * sample has FICR INFO registers unreadable. We can proceed anyway. */
 705         (void)nrf5_read_ficr_info(chip);
 706
 707         chip->spec = NULL;
 708         for (size_t i = 0; i < ARRAY_SIZE(nrf5_known_devices_table); i++) {
 709                 if (chip->hwid == nrf5_known_devices_table[i].hwid) {
 710                         chip->spec = &nrf5_known_devices_table[i];
 711                         chip->features = chip->spec->features;
 712                         break;
 713                 }
 714         }
 715
 716         if (chip->spec && chip->ficr_info_valid) {
 717                 /* check if HWID table gives the same part as FICR INFO */
 718                 if (chip->ficr_info.part != strtoul(chip->spec->part, NULL, 16))
 719                         LOG_WARNING("HWID 0x%04" PRIx32 " mismatch: FICR INFO.PART %"
 720                                                 PRIx32, chip->hwid, chip->ficr_info.part);
 721         }
 722
 723         /* The value stored in NRF5_FICR_CODEPAGESIZE is the number of bytes in one page of FLASH. */
 724         uint32_t flash_page_size;
 725         res = target_read_u32(chip->target, NRF5_FICR_CODEPAGESIZE,
 726                                 &flash_page_size);
 727         if (res != ERROR_OK) {
 728                 LOG_ERROR("Couldn't read code page size");
 729                 return res;
 730         }
 731
 732         /* Note the register name is misleading,
 733          * NRF5_FICR_CODESIZE is the number of pages in flash memory, not the number of bytes! */
 734         uint32_t num_sectors;
 735         res = target_read_u32(chip->target, NRF5_FICR_CODESIZE, &num_sectors);
 736         if (res != ERROR_OK) {
 737                 LOG_ERROR("Couldn't read code memory size");
 738                 return res;
 739         }
 740
 741         chip->flash_size_kb = num_sectors * flash_page_size / 1024;
 742
 743         if (!chip->bank[0].probed && !chip->bank[1].probed) {
 744                 char buf[80];
 745                 nrf5_info(bank, buf, sizeof(buf));
 746                 if (!chip->spec && !chip->ficr_info_valid) {
 747                         LOG_INFO("Unknown device: %s", buf);
 748                 } else {
 749                         LOG_INFO("%s", buf);
 750                 }
 751         }
 752
 753         if (bank->base == NRF5_FLASH_BASE) {
 754                 /* Sanity check */
 755                 if (chip->spec && chip->flash_size_kb != chip->spec->flash_size_kb)
 756                         LOG_WARNING("Chip's reported Flash capacity does not match expected one");
 757                 if (chip->ficr_info_valid && chip->flash_size_kb != chip->ficr_info.flash)
 758                         LOG_WARNING("Chip's reported Flash capacity does not match FICR INFO.FLASH");
 759
 760                 bank->num_sectors = num_sectors;
 761                 bank->size = num_sectors * flash_page_size;
 762
 763                 bank->sectors = alloc_block_array(0, flash_page_size, num_sectors);
 764                 if (!bank->sectors)
 765                         return ERROR_FAIL;
 766
 767                 nrf5_protect_check(bank);
 768
 769                 chip->bank[0].probed = true;
 770
 771         } else {
 772                 bank->num_sectors = 1;
 773                 bank->size = flash_page_size;
 774
 775                 bank->sectors = alloc_block_array(0, flash_page_size, num_sectors);
 776                 if (!bank->sectors)
 777                         return ERROR_FAIL;
 778
 779                 bank->sectors[0].is_protected = 0;
 780
 781                 chip->bank[1].probed = true;
 782         }
 783
 784         return ERROR_OK;
 785 }
 786
 787 static int nrf5_auto_probe(struct flash_bank *bank)
 788 {
 789         int probed = nrf5_bank_is_probed(bank);
 790
 791         if (probed < 0)
 792                 return probed;
 793         else if (probed)
 794                 return ERROR_OK;
 795         else
 796                 return nrf5_probe(bank);
 797 }
 798
 799 static int nrf5_erase_all(struct nrf5_info *chip)
 800 {
 801         LOG_DEBUG("Erasing all non-volatile memory");
 802         return nrf5_nvmc_generic_erase(chip,
 803                                         NRF5_NVMC_ERASEALL,
 804                                         0x00000001);
 805 }
 806
 807 static int nrf5_erase_page(struct flash_bank *bank,
 808                                                         struct nrf5_info *chip,
 809                                                         struct flash_sector *sector)
 810 {
 811         int res;
 812
 813         LOG_DEBUG("Erasing page at 0x%"PRIx32, sector->offset);
 814         if (sector->is_protected) {
 815                 LOG_ERROR("Cannot erase protected sector at 0x%" PRIx32, sector->offset);
 816                 return ERROR_FAIL;
 817         }
 818
 819         if (bank->base == NRF5_UICR_BASE) {
 820                 uint32_t ppfc;
 821                 res = target_read_u32(chip->target, NRF51_FICR_PPFC,
 822                                       &ppfc);
 823                 if (res != ERROR_OK) {
 824                         LOG_ERROR("Couldn't read PPFC register");
 825                         return res;
 826                 }
 827
 828                 if ((ppfc & 0xFF) == 0xFF) {
 829                         /* We can't erase the UICR.  Double-check to
 830                            see if it's already erased before complaining. */
 831                         default_flash_blank_check(bank);
 832                         if (sector->is_erased == 1)
 833                                 return ERROR_OK;
 834
 835                         LOG_ERROR("The chip was not pre-programmed with SoftDevice stack and UICR cannot be erased separately. Please issue mass erase before trying to write to this region");
 836                         return ERROR_FAIL;
 837                 }
 838
 839                 res = nrf5_nvmc_generic_erase(chip,
 840                                                NRF5_NVMC_ERASEUICR,
 841                                                0x00000001);
 842
 843
 844         } else {
 845                 res = nrf5_nvmc_generic_erase(chip,
 846                                                NRF5_NVMC_ERASEPAGE,
 847                                                sector->offset);
 848         }
 849
 850         return res;
 851 }
 852
 853 static const uint8_t nrf5_flash_write_code[] = {
 854         /* See contrib/loaders/flash/cortex-m0.S */
 855 /* <wait_fifo>: */
 856         0x0d, 0x68,             /* ldr  r5,     [r1,    #0] */
 857         0x00, 0x2d,             /* cmp  r5,     #0 */
 858         0x0b, 0xd0,             /* beq.n        1e <exit> */
 859         0x4c, 0x68,             /* ldr  r4,     [r1,    #4] */
 860         0xac, 0x42,             /* cmp  r4,     r5 */
 861         0xf9, 0xd0,             /* beq.n        0 <wait_fifo> */
 862         0x20, 0xcc,             /* ldmia        r4!,    {r5} */
 863         0x20, 0xc3,             /* stmia        r3!,    {r5} */
 864         0x94, 0x42,             /* cmp  r4,     r2 */
 865         0x01, 0xd3,             /* bcc.n        18 <no_wrap> */
 866         0x0c, 0x46,             /* mov  r4,     r1 */
 867         0x08, 0x34,             /* adds r4,     #8 */
 868 /* <no_wrap>: */
 869         0x4c, 0x60,             /* str  r4, [r1,        #4] */
 870         0x04, 0x38,             /* subs r0, #4 */
 871         0xf0, 0xd1,             /* bne.n        0 <wait_fifo> */
 872 /* <exit>: */
 873         0x00, 0xbe              /* bkpt 0x0000 */
 874 };
 875
 876
 877 /* Start a low level flash write for the specified region */
 878 static int nrf5_ll_flash_write(struct nrf5_info *chip, uint32_t address, const uint8_t *buffer, uint32_t bytes)
 879 {
 880         struct target *target = chip->target;
 881         uint32_t buffer_size = 8192;
 882         struct working_area *write_algorithm;
 883         struct working_area *source;
 884         struct reg_param reg_params[4];
 885         struct armv7m_algorithm armv7m_info;
 886         int retval = ERROR_OK;
 887
 888         LOG_DEBUG("Writing buffer to flash address=0x%"PRIx32" bytes=0x%"PRIx32, address, bytes);
 889         assert(bytes % 4 == 0);
 890
 891         /* allocate working area with flash programming code */
 892         if (target_alloc_working_area(target, sizeof(nrf5_flash_write_code),
 893                         &write_algorithm) != ERROR_OK) {
 894                 LOG_WARNING("no working area available, falling back to slow memory writes");
 895
 896                 for (; bytes > 0; bytes -= 4) {
 897                         retval = target_write_memory(target, address, 4, 1, buffer);
 898                         if (retval != ERROR_OK)
 899                                 return retval;
 900
 901                         retval = nrf5_wait_for_nvmc(chip);
 902                         if (retval != ERROR_OK)
 903                                 return retval;
 904
 905                         address += 4;
 906                         buffer += 4;
 907                 }
 908
 909                 return ERROR_OK;
 910         }
 911
 912         retval = target_write_buffer(target, write_algorithm->address,
 913                                 sizeof(nrf5_flash_write_code),
 914                                 nrf5_flash_write_code);
 915         if (retval != ERROR_OK)
 916                 return retval;
 917
 918         /* memory buffer */
 919         while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK) {
 920                 buffer_size /= 2;
 921                 buffer_size &= ~3UL; /* Make sure it's 4 byte aligned */
 922                 if (buffer_size <= 256) {
 923                         /* free working area, write algorithm already allocated */
 924                         target_free_working_area(target, write_algorithm);
 925
 926                         LOG_WARNING("No large enough working area available, can't do block memory writes");
 927                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 928                 }
 929         }
 930
 931         armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
 932         armv7m_info.core_mode = ARM_MODE_THREAD;
 933
 934         init_reg_param(&reg_params[0], "r0", 32, PARAM_IN_OUT); /* byte count */
 935         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);    /* buffer start */
 936         init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);    /* buffer end */
 937         init_reg_param(&reg_params[3], "r3", 32, PARAM_IN_OUT); /* target address */
 938
 939         buf_set_u32(reg_params[0].value, 0, 32, bytes);
 940         buf_set_u32(reg_params[1].value, 0, 32, source->address);
 941         buf_set_u32(reg_params[2].value, 0, 32, source->address + source->size);
 942         buf_set_u32(reg_params[3].value, 0, 32, address);
 943
 944         retval = target_run_flash_async_algorithm(target, buffer, bytes/4, 4,
 945                         0, NULL,
 946                         4, reg_params,
 947                         source->address, source->size,
 948                         write_algorithm->address, 0,
 949                         &armv7m_info);
 950
 951         target_free_working_area(target, source);
 952         target_free_working_area(target, write_algorithm);
 953
 954         destroy_reg_param(&reg_params[0]);
 955         destroy_reg_param(&reg_params[1]);
 956         destroy_reg_param(&reg_params[2]);
 957         destroy_reg_param(&reg_params[3]);
 958
 959         return retval;
 960 }
 961
 962 static int nrf5_write(struct flash_bank *bank, const uint8_t *buffer,
 963                                         uint32_t offset, uint32_t count)
 964 {
 965         struct nrf5_info *chip;
 966
 967         int res = nrf5_get_probed_chip_if_halted(bank, &chip);
 968         if (res != ERROR_OK)
 969                 return res;
 970
 971         assert(offset % 4 == 0);
 972         assert(count % 4 == 0);
 973
 974         res = nrf5_nvmc_write_enable(chip);
 975         if (res != ERROR_OK)
 976                 goto error;
 977
 978         res = nrf5_ll_flash_write(chip, bank->base + offset, buffer, count);
 979         if (res != ERROR_OK)
 980                 goto error;
 981
 982         return nrf5_nvmc_read_only(chip);
 983
 984 error:
 985         nrf5_nvmc_read_only(chip);
 986         LOG_ERROR("Failed to write to nrf5 flash");
 987         return res;
 988 }
 989
 990 static int nrf5_erase(struct flash_bank *bank, int first, int last)
 991 {
 992         int res;
 993         struct nrf5_info *chip;
 994
 995         res = nrf5_get_probed_chip_if_halted(bank, &chip);
 996         if (res != ERROR_OK)
 997                 return res;
 998
 999         /* For each sector to be erased */
1000         for (int s = first; s <= last && res == ERROR_OK; s++)
1001                 res = nrf5_erase_page(bank, chip, &bank->sectors[s]);
1002
1003         return res;
1004 }
1005
1006 static void nrf5_free_driver_priv(struct flash_bank *bank)
1007 {
1008         struct nrf5_bank *nbank = bank->driver_priv;
1009         struct nrf5_info *chip = nbank->chip;
1010         if (chip == NULL)
1011                 return;
1012
1013         chip->refcount--;
1014         if (chip->refcount == 0) {
1015                 free(chip);
1016                 bank->driver_priv = NULL;
1017         }
1018 }
1019
1020 FLASH_BANK_COMMAND_HANDLER(nrf5_flash_bank_command)
1021 {
1022         static struct nrf5_info *chip;
1023         struct nrf5_bank *nbank = NULL;
1024
1025         switch (bank->base) {
1026         case NRF5_FLASH_BASE:
1027         case NRF5_UICR_BASE:
1028                 break;
1029         default:
1030                 LOG_ERROR("Invalid bank address " TARGET_ADDR_FMT, bank->base);
1031                 return ERROR_FAIL;
1032         }
1033
1034         if (!chip) {
1035                 /* Create a new chip */
1036                 chip = calloc(1, sizeof(*chip));
1037                 if (!chip)
1038                         return ERROR_FAIL;
1039
1040                 chip->target = bank->target;
1041         }
1042
1043         switch (bank->base) {
1044         case NRF5_FLASH_BASE:
1045                 nbank = &chip->bank[0];
1046                 break;
1047         case NRF5_UICR_BASE:
1048                 nbank = &chip->bank[1];
1049                 break;
1050         }
1051         assert(nbank != NULL);
1052
1053         chip->refcount++;
1054         nbank->chip = chip;
1055         nbank->probed = false;
1056         bank->driver_priv = nbank;
1057         bank->write_start_alignment = bank->write_end_alignment = 4;
1058
1059         return ERROR_OK;
1060 }
1061
1062 COMMAND_HANDLER(nrf5_handle_mass_erase_command)
1063 {
1064         int res;
1065         struct flash_bank *bank = NULL;
1066         struct target *target = get_current_target(CMD_CTX);
1067
1068         res = get_flash_bank_by_addr(target, NRF5_FLASH_BASE, true, &bank);
1069         if (res != ERROR_OK)
1070                 return res;
1071
1072         assert(bank != NULL);
1073
1074         struct nrf5_info *chip;
1075
1076         res = nrf5_get_probed_chip_if_halted(bank, &chip);
1077         if (res != ERROR_OK)
1078                 return res;
1079
1080         uint32_t ppfc;
1081
1082         res = target_read_u32(target, NRF51_FICR_PPFC,
1083                               &ppfc);
1084         if (res != ERROR_OK) {
1085                 LOG_ERROR("Couldn't read PPFC register");
1086                 return res;
1087         }
1088
1089         if ((ppfc & 0xFF) == 0x00) {
1090                 LOG_ERROR("Code region 0 size was pre-programmed at the factory, "
1091                           "mass erase command won't work.");
1092                 return ERROR_FAIL;
1093         }
1094
1095         res = nrf5_erase_all(chip);
1096         if (res != ERROR_OK) {
1097                 LOG_ERROR("Failed to erase the chip");
1098                 nrf5_protect_check(bank);
1099                 return res;
1100         }
1101
1102         res = nrf5_protect_check(bank);
1103         if (res != ERROR_OK) {
1104                 LOG_ERROR("Failed to check chip's write protection");
1105                 return res;
1106         }
1107
1108         res = get_flash_bank_by_addr(target, NRF5_UICR_BASE, true, &bank);
1109         if (res != ERROR_OK)
1110                 return res;
1111
1112         return ERROR_OK;
1113 }
1114
1115 COMMAND_HANDLER(nrf5_handle_info_command)
1116 {
1117         int res;
1118         struct flash_bank *bank = NULL;
1119         struct target *target = get_current_target(CMD_CTX);
1120
1121         res = get_flash_bank_by_addr(target, NRF5_FLASH_BASE, true, &bank);
1122         if (res != ERROR_OK)
1123                 return res;
1124
1125         assert(bank != NULL);
1126
1127         struct nrf5_info *chip;
1128
1129         res = nrf5_get_probed_chip_if_halted(bank, &chip);
1130         if (res != ERROR_OK)
1131                 return res;
1132
1133         static struct {
1134                 const uint32_t address;
1135                 uint32_t value;
1136         } ficr[] = {
1137                 { .address = NRF5_FICR_CODEPAGESIZE     },
1138                 { .address = NRF5_FICR_CODESIZE },
1139                 { .address = NRF51_FICR_CLENR0          },
1140                 { .address = NRF51_FICR_PPFC            },
1141                 { .address = NRF51_FICR_NUMRAMBLOCK     },
1142                 { .address = NRF51_FICR_SIZERAMBLOCK0   },
1143                 { .address = NRF51_FICR_SIZERAMBLOCK1   },
1144                 { .address = NRF51_FICR_SIZERAMBLOCK2   },
1145                 { .address = NRF51_FICR_SIZERAMBLOCK3   },
1146                 { .address = NRF5_FICR_CONFIGID },
1147                 { .address = NRF5_FICR_DEVICEID0        },
1148                 { .address = NRF5_FICR_DEVICEID1        },
1149                 { .address = NRF5_FICR_ER0              },
1150                 { .address = NRF5_FICR_ER1              },
1151                 { .address = NRF5_FICR_ER2              },
1152                 { .address = NRF5_FICR_ER3              },
1153                 { .address = NRF5_FICR_IR0              },
1154                 { .address = NRF5_FICR_IR1              },
1155                 { .address = NRF5_FICR_IR2              },
1156                 { .address = NRF5_FICR_IR3              },
1157                 { .address = NRF5_FICR_DEVICEADDRTYPE   },
1158                 { .address = NRF5_FICR_DEVICEADDR0      },
1159                 { .address = NRF5_FICR_DEVICEADDR1      },
1160                 { .address = NRF51_FICR_OVERRIDEN       },
1161                 { .address = NRF51_FICR_NRF_1MBIT0      },
1162                 { .address = NRF51_FICR_NRF_1MBIT1      },
1163                 { .address = NRF51_FICR_NRF_1MBIT2      },
1164                 { .address = NRF51_FICR_NRF_1MBIT3      },
1165                 { .address = NRF51_FICR_NRF_1MBIT4      },
1166                 { .address = NRF51_FICR_BLE_1MBIT0      },
1167                 { .address = NRF51_FICR_BLE_1MBIT1      },
1168                 { .address = NRF51_FICR_BLE_1MBIT2      },
1169                 { .address = NRF51_FICR_BLE_1MBIT3      },
1170                 { .address = NRF51_FICR_BLE_1MBIT4      },
1171         }, uicr[] = {
1172                 { .address = NRF51_UICR_CLENR0,         },
1173                 { .address = NRF51_UICR_RBPCONF         },
1174                 { .address = NRF51_UICR_XTALFREQ        },
1175                 { .address = NRF51_UICR_FWID            },
1176         };
1177
1178         for (size_t i = 0; i < ARRAY_SIZE(ficr); i++) {
1179                 res = target_read_u32(chip->target, ficr[i].address,
1180                                       &ficr[i].value);
1181                 if (res != ERROR_OK) {
1182                         LOG_ERROR("Couldn't read %" PRIx32, ficr[i].address);
1183                         return res;
1184                 }
1185         }
1186
1187         for (size_t i = 0; i < ARRAY_SIZE(uicr); i++) {
1188                 res = target_read_u32(chip->target, uicr[i].address,
1189                                       &uicr[i].value);
1190                 if (res != ERROR_OK) {
1191                         LOG_ERROR("Couldn't read %" PRIx32, uicr[i].address);
1192                         return res;
1193                 }
1194         }
1195
1196         command_print(CMD,
1197                  "\n[factory information control block]\n\n"
1198                  "code page size: %"PRIu32"B\n"
1199                  "code memory size: %"PRIu32"kB\n"
1200                  "code region 0 size: %"PRIu32"kB\n"
1201                  "pre-programmed code: %s\n"
1202                  "number of ram blocks: %"PRIu32"\n"
1203                  "ram block 0 size: %"PRIu32"B\n"
1204                  "ram block 1 size: %"PRIu32"B\n"
1205                  "ram block 2 size: %"PRIu32"B\n"
1206                  "ram block 3 size: %"PRIu32 "B\n"
1207                  "config id: %" PRIx32 "\n"
1208                  "device id: 0x%"PRIx32"%08"PRIx32"\n"
1209                  "encryption root: 0x%08"PRIx32"%08"PRIx32"%08"PRIx32"%08"PRIx32"\n"
1210                  "identity root: 0x%08"PRIx32"%08"PRIx32"%08"PRIx32"%08"PRIx32"\n"
1211                  "device address type: 0x%"PRIx32"\n"
1212                  "device address: 0x%"PRIx32"%08"PRIx32"\n"
1213                  "override enable: %"PRIx32"\n"
1214                  "NRF_1MBIT values: %"PRIx32" %"PRIx32" %"PRIx32" %"PRIx32" %"PRIx32"\n"
1215                  "BLE_1MBIT values: %"PRIx32" %"PRIx32" %"PRIx32" %"PRIx32" %"PRIx32"\n"
1216                  "\n[user information control block]\n\n"
1217                  "code region 0 size: %"PRIu32"kB\n"
1218                  "read back protection configuration: %"PRIx32"\n"
1219                  "reset value for XTALFREQ: %"PRIx32"\n"
1220                  "firmware id: 0x%04"PRIx32,
1221                  ficr[0].value,
1222                  (ficr[1].value * ficr[0].value) / 1024,
1223                  (ficr[2].value == 0xFFFFFFFF) ? 0 : ficr[2].value / 1024,
1224                  ((ficr[3].value & 0xFF) == 0x00) ? "present" : "not present",
1225                  ficr[4].value,
1226                  ficr[5].value,
1227                  (ficr[6].value == 0xFFFFFFFF) ? 0 : ficr[6].value,
1228                  (ficr[7].value == 0xFFFFFFFF) ? 0 : ficr[7].value,
1229                  (ficr[8].value == 0xFFFFFFFF) ? 0 : ficr[8].value,
1230                  ficr[9].value,
1231                  ficr[10].value, ficr[11].value,
1232                  ficr[12].value, ficr[13].value, ficr[14].value, ficr[15].value,
1233                  ficr[16].value, ficr[17].value, ficr[18].value, ficr[19].value,
1234                  ficr[20].value,
1235                  ficr[21].value, ficr[22].value,
1236                  ficr[23].value,
1237                  ficr[24].value, ficr[25].value, ficr[26].value, ficr[27].value, ficr[28].value,
1238                  ficr[29].value, ficr[30].value, ficr[31].value, ficr[32].value, ficr[33].value,
1239                  (uicr[0].value == 0xFFFFFFFF) ? 0 : uicr[0].value / 1024,
1240                  uicr[1].value & 0xFFFF,
1241                  uicr[2].value & 0xFF,
1242                  uicr[3].value & 0xFFFF);
1243
1244         return ERROR_OK;
1245 }
1246
1247 static const struct command_registration nrf5_exec_command_handlers[] = {
1248         {
1249                 .name           = "mass_erase",
1250                 .handler        = nrf5_handle_mass_erase_command,
1251                 .mode           = COMMAND_EXEC,
1252                 .help           = "Erase all flash contents of the chip.",
1253                 .usage          = "",
1254         },
1255         {
1256                 .name           = "info",
1257                 .handler        = nrf5_handle_info_command,
1258                 .mode           = COMMAND_EXEC,
1259                 .help           = "Show FICR and UICR info.",
1260                 .usage          = "",
1261         },
1262         COMMAND_REGISTRATION_DONE
1263 };
1264
1265 static const struct command_registration nrf5_command_handlers[] = {
1266         {
1267                 .name   = "nrf5",
1268                 .mode   = COMMAND_ANY,
1269                 .help   = "nrf5 flash command group",
1270                 .usage  = "",
1271                 .chain  = nrf5_exec_command_handlers,
1272         },
1273         {
1274                 .name   = "nrf51",
1275                 .mode   = COMMAND_ANY,
1276                 .help   = "nrf51 flash command group",
1277                 .usage  = "",
1278                 .chain  = nrf5_exec_command_handlers,
1279         },
1280         COMMAND_REGISTRATION_DONE
1281 };
1282
1283 const struct flash_driver nrf5_flash = {
1284         .name                   = "nrf5",
1285         .commands               = nrf5_command_handlers,
1286         .flash_bank_command     = nrf5_flash_bank_command,
1287         .info                   = nrf5_info,
1288         .erase                  = nrf5_erase,
1289         .protect                = nrf5_protect,
1290         .write                  = nrf5_write,
1291         .read                   = default_flash_read,
1292         .probe                  = nrf5_probe,
1293         .auto_probe             = nrf5_auto_probe,
1294         .erase_check            = default_flash_blank_check,
1295         .protect_check          = nrf5_protect_check,
1296         .free_driver_priv       = nrf5_free_driver_priv,
1297 };
1298
1299 /* We need to retain the flash-driver name as well as the commands
1300  * for backwards compatability */
1301 const struct flash_driver nrf51_flash = {
1302         .name                   = "nrf51",
1303         .commands               = nrf5_command_handlers,
1304         .flash_bank_command     = nrf5_flash_bank_command,
1305         .info                   = nrf5_info,
1306         .erase                  = nrf5_erase,
1307         .protect                = nrf5_protect,
1308         .write                  = nrf5_write,
1309         .read                   = default_flash_read,
1310         .probe                  = nrf5_probe,
1311         .auto_probe             = nrf5_auto_probe,
1312         .erase_check            = default_flash_blank_check,
1313         .protect_check          = nrf5_protect_check,
1314         .free_driver_priv       = nrf5_free_driver_priv,
1315 };