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

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Magnus Lundin                                   *
   3  *   lundin@mlu.mine.nu                                                    *
   4  *                                                                         *
   5  *   Copyright (C) 2008 by Spencer Oliver                                  *
   6  *   spen@spen-soft.co.uk                                                  *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program; if not, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23
  24 /***************************************************************************
  25 * STELLARIS flash is tested on LM3S811, LM3S6965, LM3s3748, more.
  26 ***************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 #include "config.h"
  30 #endif
  31
  32 #include "jtag/interface.h"
  33 #include "imp.h"
  34 #include <target/algorithm.h>
  35 #include <target/armv7m.h>
  36
  37 #define DID0_VER(did0) ((did0 >> 28)&0x07)
  38
  39 /* STELLARIS control registers */
  40 #define SCB_BASE        0x400FE000
  41 #define DID0            0x000
  42 #define DID1            0x004
  43 #define DC0                     0x008
  44 #define DC1                     0x010
  45 #define DC2                     0x014
  46 #define DC3                     0x018
  47 #define DC4                     0x01C
  48
  49 #define RIS                     0x050
  50 #define RCC                     0x060
  51 #define PLLCFG          0x064
  52 #define RCC2            0x070
  53 #define NVMSTAT         0x1a0
  54
  55 /* "legacy" flash memory protection registers (64KB max) */
  56 #define FMPRE           0x130
  57 #define FMPPE           0x134
  58
  59 /* new flash memory protection registers (for more than 64KB) */
  60 #define FMPRE0          0x200           /* PRE1 = PRE0 + 4, etc */
  61 #define FMPPE0          0x400           /* PPE1 = PPE0 + 4, etc */
  62
  63 #define USECRL          0x140
  64
  65 #define FLASH_CONTROL_BASE      0x400FD000
  66 #define FLASH_FMA       (FLASH_CONTROL_BASE | 0x000)
  67 #define FLASH_FMD       (FLASH_CONTROL_BASE | 0x004)
  68 #define FLASH_FMC       (FLASH_CONTROL_BASE | 0x008)
  69 #define FLASH_CRIS      (FLASH_CONTROL_BASE | 0x00C)
  70 #define FLASH_CIM       (FLASH_CONTROL_BASE | 0x010)
  71 #define FLASH_MISC      (FLASH_CONTROL_BASE | 0x014)
  72
  73 #define AMISC   1
  74 #define PMISC   2
  75
  76 #define AMASK   1
  77 #define PMASK   2
  78
  79 /* Flash Controller Command bits */
  80 #define FMC_WRKEY       (0xA442 << 16)
  81 #define FMC_COMT        (1 << 3)
  82 #define FMC_MERASE      (1 << 2)
  83 #define FMC_ERASE       (1 << 1)
  84 #define FMC_WRITE       (1 << 0)
  85
  86 /* STELLARIS constants */
  87
  88 /* values to write in FMA to commit write-"once" values */
  89 #define FLASH_FMA_PRE(x)        (2 * (x))       /* for FMPPREx */
  90 #define FLASH_FMA_PPE(x)        (2 * (x) + 1)   /* for FMPPPEx */
  91
  92 static void stellaris_read_clock_info(struct flash_bank *bank);
  93 static int stellaris_mass_erase(struct flash_bank *bank);
  94
  95 struct stellaris_flash_bank {
  96         /* chip id register */
  97         uint32_t did0;
  98         uint32_t did1;
  99         uint32_t dc0;
 100         uint32_t dc1;
 101
 102         const char *target_name;
 103         uint8_t target_class;
 104
 105         uint32_t sramsiz;
 106         uint32_t flshsz;
 107         /* flash geometry */
 108         uint32_t num_pages;
 109         uint32_t pagesize;
 110         uint32_t pages_in_lockregion;
 111
 112         /* nv memory bits */
 113         uint16_t num_lockbits;
 114
 115         /* main clock status */
 116         uint32_t rcc;
 117         uint32_t rcc2;
 118         uint8_t  mck_valid;
 119         uint8_t  xtal_mask;
 120         uint32_t iosc_freq;
 121         uint32_t mck_freq;
 122         const char *iosc_desc;
 123         const char *mck_desc;
 124 };
 125
 126 /* Autogenerated by contrib/gen-stellaris-part-header.pl */
 127 /* From Stellaris Firmware Development Package revision 9453 */
 128 static struct {
 129         uint8_t class;
 130         uint8_t partno;
 131         const char *partname;
 132 } StellarisParts[] = {
 133         {0x00, 0x01, "LM3S101"},
 134         {0x00, 0x02, "LM3S102"},
 135         {0x01, 0xBF, "LM3S1110"},
 136         {0x01, 0xC3, "LM3S1133"},
 137         {0x01, 0xC5, "LM3S1138"},
 138         {0x01, 0xC1, "LM3S1150"},
 139         {0x01, 0xC4, "LM3S1162"},
 140         {0x01, 0xC2, "LM3S1165"},
 141         {0x01, 0xEC, "LM3S1166"},
 142         {0x01, 0xC6, "LM3S1332"},
 143         {0x01, 0xBC, "LM3S1435"},
 144         {0x01, 0xBA, "LM3S1439"},
 145         {0x01, 0xBB, "LM3S1512"},
 146         {0x01, 0xC7, "LM3S1538"},
 147         {0x01, 0xDB, "LM3S1601"},
 148         {0x03, 0x06, "LM3S1607"},
 149         {0x01, 0xDA, "LM3S1608"},
 150         {0x01, 0xC0, "LM3S1620"},
 151         {0x04, 0xCD, "LM3S1621"},
 152         {0x03, 0x03, "LM3S1625"},
 153         {0x03, 0x04, "LM3S1626"},
 154         {0x03, 0x05, "LM3S1627"},
 155         {0x01, 0xB3, "LM3S1635"},
 156         {0x01, 0xEB, "LM3S1636"},
 157         {0x01, 0xBD, "LM3S1637"},
 158         {0x04, 0xB1, "LM3S1651"},
 159         {0x01, 0xB9, "LM3S1751"},
 160         {0x03, 0x10, "LM3S1776"},
 161         {0x04, 0x16, "LM3S1811"},
 162         {0x04, 0x3D, "LM3S1816"},
 163         {0x01, 0xB4, "LM3S1850"},
 164         {0x01, 0xDD, "LM3S1911"},
 165         {0x01, 0xDC, "LM3S1918"},
 166         {0x01, 0xB7, "LM3S1937"},
 167         {0x01, 0xBE, "LM3S1958"},
 168         {0x01, 0xB5, "LM3S1960"},
 169         {0x01, 0xB8, "LM3S1968"},
 170         {0x01, 0xEA, "LM3S1969"},
 171         {0x04, 0xCE, "LM3S1B21"},
 172         {0x06, 0xCA, "LM3S1C21"},
 173         {0x06, 0xCB, "LM3S1C26"},
 174         {0x06, 0x98, "LM3S1C58"},
 175         {0x06, 0xB0, "LM3S1D21"},
 176         {0x06, 0xCC, "LM3S1D26"},
 177         {0x06, 0x1D, "LM3S1F11"},
 178         {0x06, 0x1B, "LM3S1F16"},
 179         {0x06, 0xAF, "LM3S1G21"},
 180         {0x06, 0x95, "LM3S1G58"},
 181         {0x06, 0x1E, "LM3S1H11"},
 182         {0x06, 0x1C, "LM3S1H16"},
 183         {0x04, 0x0F, "LM3S1J11"},
 184         {0x04, 0x3C, "LM3S1J16"},
 185         {0x04, 0x0E, "LM3S1N11"},
 186         {0x04, 0x3B, "LM3S1N16"},
 187         {0x04, 0xB2, "LM3S1P51"},
 188         {0x04, 0x9E, "LM3S1R21"},
 189         {0x04, 0xC9, "LM3S1R26"},
 190         {0x04, 0x30, "LM3S1W16"},
 191         {0x04, 0x2F, "LM3S1Z16"},
 192         {0x01, 0x51, "LM3S2110"},
 193         {0x01, 0x84, "LM3S2139"},
 194         {0x03, 0x39, "LM3S2276"},
 195         {0x01, 0xA2, "LM3S2410"},
 196         {0x01, 0x59, "LM3S2412"},
 197         {0x01, 0x56, "LM3S2432"},
 198         {0x01, 0x5A, "LM3S2533"},
 199         {0x01, 0xE1, "LM3S2601"},
 200         {0x01, 0xE0, "LM3S2608"},
 201         {0x03, 0x33, "LM3S2616"},
 202         {0x01, 0x57, "LM3S2620"},
 203         {0x01, 0x85, "LM3S2637"},
 204         {0x01, 0x53, "LM3S2651"},
 205         {0x03, 0x80, "LM3S2671"},
 206         {0x03, 0x50, "LM3S2678"},
 207         {0x01, 0xA4, "LM3S2730"},
 208         {0x01, 0x52, "LM3S2739"},
 209         {0x03, 0x3A, "LM3S2776"},
 210         {0x04, 0x6D, "LM3S2793"},
 211         {0x01, 0xE3, "LM3S2911"},
 212         {0x01, 0xE2, "LM3S2918"},
 213         {0x01, 0xED, "LM3S2919"},
 214         {0x01, 0x54, "LM3S2939"},
 215         {0x01, 0x8F, "LM3S2948"},
 216         {0x01, 0x58, "LM3S2950"},
 217         {0x01, 0x55, "LM3S2965"},
 218         {0x04, 0x6C, "LM3S2B93"},
 219         {0x06, 0x94, "LM3S2D93"},
 220         {0x06, 0x93, "LM3S2U93"},
 221         {0x00, 0x19, "LM3S300"},
 222         {0x00, 0x11, "LM3S301"},
 223         {0x00, 0x1A, "LM3S308"},
 224         {0x00, 0x12, "LM3S310"},
 225         {0x00, 0x13, "LM3S315"},
 226         {0x00, 0x14, "LM3S316"},
 227         {0x00, 0x17, "LM3S317"},
 228         {0x00, 0x15, "LM3S328"},
 229         {0x03, 0x08, "LM3S3634"},
 230         {0x03, 0x43, "LM3S3651"},
 231         {0x04, 0xC8, "LM3S3654"},
 232         {0x03, 0x44, "LM3S3739"},
 233         {0x03, 0x49, "LM3S3748"},
 234         {0x03, 0x45, "LM3S3749"},
 235         {0x04, 0x42, "LM3S3826"},
 236         {0x04, 0x41, "LM3S3J26"},
 237         {0x04, 0x40, "LM3S3N26"},
 238         {0x04, 0x3F, "LM3S3W26"},
 239         {0x04, 0x3E, "LM3S3Z26"},
 240         {0x03, 0x81, "LM3S5632"},
 241         {0x04, 0x0C, "LM3S5651"},
 242         {0x03, 0x8A, "LM3S5652"},
 243         {0x04, 0x4D, "LM3S5656"},
 244         {0x03, 0x91, "LM3S5662"},
 245         {0x03, 0x96, "LM3S5732"},
 246         {0x03, 0x97, "LM3S5737"},
 247         {0x03, 0xA0, "LM3S5739"},
 248         {0x03, 0x99, "LM3S5747"},
 249         {0x03, 0xA7, "LM3S5749"},
 250         {0x03, 0x9A, "LM3S5752"},
 251         {0x03, 0x9C, "LM3S5762"},
 252         {0x04, 0x69, "LM3S5791"},
 253         {0x04, 0x0B, "LM3S5951"},
 254         {0x04, 0x4E, "LM3S5956"},
 255         {0x04, 0x68, "LM3S5B91"},
 256         {0x06, 0x2E, "LM3S5C31"},
 257         {0x06, 0x2C, "LM3S5C36"},
 258         {0x06, 0x5E, "LM3S5C51"},
 259         {0x06, 0x5B, "LM3S5C56"},
 260         {0x06, 0x5F, "LM3S5D51"},
 261         {0x06, 0x5C, "LM3S5D56"},
 262         {0x06, 0x87, "LM3S5D91"},
 263         {0x06, 0x2D, "LM3S5G31"},
 264         {0x06, 0x1F, "LM3S5G36"},
 265         {0x06, 0x5D, "LM3S5G51"},
 266         {0x06, 0x4F, "LM3S5G56"},
 267         {0x04, 0x09, "LM3S5K31"},
 268         {0x04, 0x4A, "LM3S5K36"},
 269         {0x04, 0x0A, "LM3S5P31"},
 270         {0x04, 0x48, "LM3S5P36"},
 271         {0x04, 0xB6, "LM3S5P3B"},
 272         {0x04, 0x0D, "LM3S5P51"},
 273         {0x04, 0x4C, "LM3S5P56"},
 274         {0x04, 0x07, "LM3S5R31"},
 275         {0x04, 0x4B, "LM3S5R36"},
 276         {0x04, 0x47, "LM3S5T36"},
 277         {0x06, 0x7F, "LM3S5U91"},
 278         {0x04, 0x46, "LM3S5Y36"},
 279         {0x00, 0x2A, "LM3S600"},
 280         {0x00, 0x21, "LM3S601"},
 281         {0x00, 0x2B, "LM3S608"},
 282         {0x00, 0x22, "LM3S610"},
 283         {0x01, 0xA1, "LM3S6100"},
 284         {0x00, 0x23, "LM3S611"},
 285         {0x01, 0x74, "LM3S6110"},
 286         {0x00, 0x24, "LM3S612"},
 287         {0x00, 0x25, "LM3S613"},
 288         {0x00, 0x26, "LM3S615"},
 289         {0x00, 0x28, "LM3S617"},
 290         {0x00, 0x29, "LM3S618"},
 291         {0x00, 0x27, "LM3S628"},
 292         {0x01, 0xA5, "LM3S6420"},
 293         {0x01, 0x82, "LM3S6422"},
 294         {0x01, 0x75, "LM3S6432"},
 295         {0x01, 0x76, "LM3S6537"},
 296         {0x01, 0x71, "LM3S6610"},
 297         {0x01, 0xE7, "LM3S6611"},
 298         {0x01, 0xE6, "LM3S6618"},
 299         {0x01, 0x83, "LM3S6633"},
 300         {0x01, 0x8B, "LM3S6637"},
 301         {0x01, 0xA3, "LM3S6730"},
 302         {0x01, 0x77, "LM3S6753"},
 303         {0x01, 0xE9, "LM3S6911"},
 304         {0x01, 0xE8, "LM3S6918"},
 305         {0x01, 0x89, "LM3S6938"},
 306         {0x01, 0x72, "LM3S6950"},
 307         {0x01, 0x78, "LM3S6952"},
 308         {0x01, 0x73, "LM3S6965"},
 309         {0x06, 0xAA, "LM3S6C11"},
 310         {0x06, 0xAC, "LM3S6C65"},
 311         {0x06, 0x9F, "LM3S6G11"},
 312         {0x06, 0xAB, "LM3S6G65"},
 313         {0x00, 0x38, "LM3S800"},
 314         {0x00, 0x31, "LM3S801"},
 315         {0x00, 0x39, "LM3S808"},
 316         {0x00, 0x32, "LM3S811"},
 317         {0x00, 0x33, "LM3S812"},
 318         {0x00, 0x34, "LM3S815"},
 319         {0x00, 0x36, "LM3S817"},
 320         {0x00, 0x37, "LM3S818"},
 321         {0x00, 0x35, "LM3S828"},
 322         {0x01, 0x64, "LM3S8530"},
 323         {0x01, 0x8E, "LM3S8538"},
 324         {0x01, 0x61, "LM3S8630"},
 325         {0x01, 0x63, "LM3S8730"},
 326         {0x01, 0x8D, "LM3S8733"},
 327         {0x01, 0x86, "LM3S8738"},
 328         {0x01, 0x65, "LM3S8930"},
 329         {0x01, 0x8C, "LM3S8933"},
 330         {0x01, 0x88, "LM3S8938"},
 331         {0x01, 0xA6, "LM3S8962"},
 332         {0x01, 0x62, "LM3S8970"},
 333         {0x01, 0xD7, "LM3S8971"},
 334         {0x06, 0xAE, "LM3S8C62"},
 335         {0x06, 0xAD, "LM3S8G62"},
 336         {0x04, 0xCF, "LM3S9781"},
 337         {0x04, 0x67, "LM3S9790"},
 338         {0x04, 0x6B, "LM3S9792"},
 339         {0x04, 0x2D, "LM3S9971"},
 340         {0x04, 0x20, "LM3S9997"},
 341         {0x04, 0xD0, "LM3S9B81"},
 342         {0x04, 0x66, "LM3S9B90"},
 343         {0x04, 0x6A, "LM3S9B92"},
 344         {0x04, 0x6E, "LM3S9B95"},
 345         {0x04, 0x6F, "LM3S9B96"},
 346         {0x04, 0x1D, "LM3S9BN2"},
 347         {0x04, 0x1E, "LM3S9BN5"},
 348         {0x04, 0x1F, "LM3S9BN6"},
 349         {0x06, 0x70, "LM3S9C97"},
 350         {0x06, 0xA9, "LM3S9D81"},
 351         {0x06, 0x7E, "LM3S9D90"},
 352         {0x06, 0x92, "LM3S9D92"},
 353         {0x06, 0x9D, "LM3S9D96"},
 354         {0x06, 0x7B, "LM3S9DN5"},
 355         {0x06, 0x7C, "LM3S9DN6"},
 356         {0x06, 0x60, "LM3S9G97"},
 357         {0x06, 0x79, "LM3S9GN5"},
 358         {0x04, 0x1B, "LM3S9L71"},
 359         {0x04, 0x18, "LM3S9L97"},
 360         {0x06, 0xA8, "LM3S9U81"},
 361         {0x06, 0x7D, "LM3S9U90"},
 362         {0x06, 0x90, "LM3S9U92"},
 363         {0x06, 0x9B, "LM3S9U96"},
 364         {0x05, 0x18, "LM4F110B2QR"},
 365         {0x05, 0x19, "LM4F110C4QR"},
 366         {0x05, 0x10, "LM4F110E5QR"},
 367         {0x05, 0x11, "LM4F110H5QR"},
 368         {0x05, 0x22, "LM4F111B2QR"},
 369         {0x05, 0x23, "LM4F111C4QR"},
 370         {0x05, 0x20, "LM4F111E5QR"},
 371         {0x05, 0x21, "LM4F111H5QR"},
 372         {0x05, 0x36, "LM4F112C4QC"},
 373         {0x05, 0x30, "LM4F112E5QC"},
 374         {0x05, 0x31, "LM4F112H5QC"},
 375         {0x05, 0x35, "LM4F112H5QD"},
 376         {0x05, 0x01, "LM4F120B2QR"},
 377         {0x05, 0x02, "LM4F120C4QR"},
 378         {0x05, 0x03, "LM4F120E5QR"},
 379         {0x05, 0x04, "LM4F120H5QR"},
 380         {0x05, 0x08, "LM4F121B2QR"},
 381         {0x05, 0x09, "LM4F121C4QR"},
 382         {0x05, 0x0A, "LM4F121E5QR"},
 383         {0x05, 0x0B, "LM4F121H5QR"},
 384         {0x05, 0xD0, "LM4F122C4QC"},
 385         {0x05, 0xD1, "LM4F122E5QC"},
 386         {0x05, 0xD2, "LM4F122H5QC"},
 387         {0x05, 0xD6, "LM4F122H5QD"},
 388         {0x05, 0x48, "LM4F130C4QR"},
 389         {0x05, 0x40, "LM4F130E5QR"},
 390         {0x05, 0x41, "LM4F130H5QR"},
 391         {0x05, 0x52, "LM4F131C4QR"},
 392         {0x05, 0x50, "LM4F131E5QR"},
 393         {0x05, 0x51, "LM4F131H5QR"},
 394         {0x05, 0x66, "LM4F132C4QC"},
 395         {0x05, 0x60, "LM4F132E5QC"},
 396         {0x05, 0x61, "LM4F132H5QC"},
 397         {0x05, 0x65, "LM4F132H5QD"},
 398         {0x05, 0x70, "LM4F210E5QR"},
 399         {0x05, 0x73, "LM4F210H5QR"},
 400         {0x05, 0x80, "LM4F211E5QR"},
 401         {0x05, 0x83, "LM4F211H5QR"},
 402         {0x05, 0xE9, "LM4F212H5BB"},
 403         {0x05, 0xC4, "LM4F212H5QC"},
 404         {0x05, 0xC6, "LM4F212H5QD"},
 405         {0x05, 0xA0, "LM4F230E5QR"},
 406         {0x05, 0xA1, "LM4F230H5QR"},
 407         {0x05, 0xB0, "LM4F231E5QR"},
 408         {0x05, 0xB1, "LM4F231H5QR"},
 409         {0x05, 0xC0, "LM4F232E5QC"},
 410         {0x05, 0xE3, "LM4F232H5BB"},
 411         {0x05, 0xC1, "LM4F232H5QC"},
 412         {0x05, 0xC5, "LM4F232H5QD"},
 413         {0x05, 0xE5, "LM4FS1AH5BB"},
 414         {0x05, 0xEA, "LM4FS1GH5BB"},
 415         {0x05, 0xE4, "LM4FS99H5BB"},
 416         {0x05, 0xE1, "LM4FSXLH5BB"},
 417         {0xFF, 0x00, "Unknown Part"}
 418 };
 419
 420 static char *StellarisClassname[7] = {
 421         "Sandstorm",
 422         "Fury",
 423         "Unknown",
 424         "DustDevil",
 425         "Tempest",
 426         "Blizzard",
 427         "Firestorm"
 428 };
 429
 430 /***************************************************************************
 431 *       openocd command interface                                              *
 432 ***************************************************************************/
 433
 434 /* flash_bank stellaris <base> <size> 0 0 <target#>
 435  */
 436 FLASH_BANK_COMMAND_HANDLER(stellaris_flash_bank_command)
 437 {
 438         struct stellaris_flash_bank *stellaris_info;
 439
 440         if (CMD_ARGC < 6)
 441                 return ERROR_COMMAND_SYNTAX_ERROR;
 442
 443         stellaris_info = calloc(sizeof(struct stellaris_flash_bank), 1);
 444         bank->base = 0x0;
 445         bank->driver_priv = stellaris_info;
 446
 447         stellaris_info->target_name = "Unknown target";
 448
 449         /* part wasn't probed for info yet */
 450         stellaris_info->did1 = 0;
 451
 452         /* TODO Specify the main crystal speed in kHz using an optional
 453          * argument; ditto, the speed of an external oscillator used
 454          * instead of a crystal.  Avoid programming flash using IOSC.
 455          */
 456         return ERROR_OK;
 457 }
 458
 459 static int get_stellaris_info(struct flash_bank *bank, char *buf, int buf_size)
 460 {
 461         int printed;
 462         struct stellaris_flash_bank *stellaris_info = bank->driver_priv;
 463
 464         if (stellaris_info->did1 == 0)
 465                 return ERROR_FLASH_BANK_NOT_PROBED;
 466
 467         /* Read main and master clock freqency register */
 468         stellaris_read_clock_info(bank);
 469
 470         printed = snprintf(buf,
 471                            buf_size,
 472                            "\nTI/LMI Stellaris information: Chip is "
 473                            "class %i (%s) %s rev %c%i\n",
 474                            stellaris_info->target_class,
 475                            StellarisClassname[stellaris_info->target_class],
 476                            stellaris_info->target_name,
 477                            (int)('A' + ((stellaris_info->did0 >> 8) & 0xFF)),
 478                            (int)((stellaris_info->did0) & 0xFF));
 479         buf += printed;
 480         buf_size -= printed;
 481
 482         printed = snprintf(buf,
 483                            buf_size,
 484                            "did1: 0x%8.8" PRIx32 ", arch: 0x%4.4" PRIx32
 485                            ", eproc: %s, ramsize: %ik, flashsize: %ik\n",
 486                            stellaris_info->did1,
 487                            stellaris_info->did1,
 488                            "ARMv7M",
 489                            (int)((1 + ((stellaris_info->dc0 >> 16) & 0xFFFF))/4),
 490                            (int)((1 + (stellaris_info->dc0 & 0xFFFF))*2));
 491         buf += printed;
 492         buf_size -= printed;
 493
 494         printed = snprintf(buf,
 495                            buf_size,
 496                            "master clock: %ikHz%s, "
 497                            "rcc is 0x%" PRIx32 ", rcc2 is 0x%" PRIx32 "\n",
 498                            (int)(stellaris_info->mck_freq / 1000),
 499                            stellaris_info->mck_desc,
 500                            stellaris_info->rcc,
 501                            stellaris_info->rcc2);
 502         buf += printed;
 503         buf_size -= printed;
 504
 505         if (stellaris_info->num_lockbits > 0) {
 506                 snprintf(buf,
 507                                 buf_size,
 508                                 "pagesize: %" PRIi32 ", pages: %d, "
 509                                 "lockbits: %i, pages per lockbit: %i\n",
 510                                 stellaris_info->pagesize,
 511                                 (unsigned) stellaris_info->num_pages,
 512                                 stellaris_info->num_lockbits,
 513                                 (unsigned) stellaris_info->pages_in_lockregion);
 514         }
 515         return ERROR_OK;
 516 }
 517
 518 /***************************************************************************
 519 *       chip identification and status                                         *
 520 ***************************************************************************/
 521
 522 /* Set the flash timimg register to match current clocking */
 523 static void stellaris_set_flash_timing(struct flash_bank *bank)
 524 {
 525         struct stellaris_flash_bank *stellaris_info = bank->driver_priv;
 526         struct target *target = bank->target;
 527         uint32_t usecrl = (stellaris_info->mck_freq/1000000ul-1);
 528
 529         /* only valid for Sandstorm and Fury class devices */
 530         if (stellaris_info->target_class > 1)
 531                 return;
 532
 533         LOG_DEBUG("usecrl = %i", (int)(usecrl));
 534         target_write_u32(target, SCB_BASE | USECRL, usecrl);
 535 }
 536
 537 static const unsigned rcc_xtal[32] = {
 538         [0x00] = 1000000,               /* no pll */
 539         [0x01] = 1843200,               /* no pll */
 540         [0x02] = 2000000,               /* no pll */
 541         [0x03] = 2457600,               /* no pll */
 542
 543         [0x04] = 3579545,
 544         [0x05] = 3686400,
 545         [0x06] = 4000000,               /* usb */
 546         [0x07] = 4096000,
 547
 548         [0x08] = 4915200,
 549         [0x09] = 5000000,               /* usb */
 550         [0x0a] = 5120000,
 551         [0x0b] = 6000000,               /* (reset) usb */
 552
 553         [0x0c] = 6144000,
 554         [0x0d] = 7372800,
 555         [0x0e] = 8000000,               /* usb */
 556         [0x0f] = 8192000,
 557
 558         /* parts before DustDevil use just 4 bits for xtal spec */
 559
 560         [0x10] = 10000000,              /* usb */
 561         [0x11] = 12000000,              /* usb */
 562         [0x12] = 12288000,
 563         [0x13] = 13560000,
 564
 565         [0x14] = 14318180,
 566         [0x15] = 16000000,              /* usb */
 567         [0x16] = 16384000,
 568 };
 569
 570 /** Read clock configuration and set stellaris_info->usec_clocks. */
 571 static void stellaris_read_clock_info(struct flash_bank *bank)
 572 {
 573         struct stellaris_flash_bank *stellaris_info = bank->driver_priv;
 574         struct target *target = bank->target;
 575         uint32_t rcc, rcc2, pllcfg, sysdiv, usesysdiv, bypass, oscsrc;
 576         unsigned xtal;
 577         unsigned long mainfreq;
 578
 579         target_read_u32(target, SCB_BASE | RCC, &rcc);
 580         LOG_DEBUG("Stellaris RCC %" PRIx32 "", rcc);
 581
 582         target_read_u32(target, SCB_BASE | RCC2, &rcc2);
 583         LOG_DEBUG("Stellaris RCC2 %" PRIx32 "", rcc);
 584
 585         target_read_u32(target, SCB_BASE | PLLCFG, &pllcfg);
 586         LOG_DEBUG("Stellaris PLLCFG %" PRIx32 "", pllcfg);
 587
 588         stellaris_info->rcc = rcc;
 589         stellaris_info->rcc = rcc2;
 590
 591         sysdiv = (rcc >> 23) & 0xF;
 592         usesysdiv = (rcc >> 22) & 0x1;
 593         bypass = (rcc >> 11) & 0x1;
 594         oscsrc = (rcc >> 4) & 0x3;
 595         xtal = (rcc >> 6) & stellaris_info->xtal_mask;
 596
 597         /* NOTE: post-Sandstorm parts have RCC2 which may override
 598          * parts of RCC ... with more sysdiv options, option for
 599          * 32768 Hz mainfreq, PLL controls.  On Sandstorm it reads
 600          * as zero, so the "use RCC2" flag is always clear.
 601          */
 602         if (rcc2 & (1 << 31)) {
 603                 sysdiv = (rcc2 >> 23) & 0x3F;
 604                 bypass = (rcc2 >> 11) & 0x1;
 605                 oscsrc = (rcc2 >> 4) & 0x7;
 606
 607                 /* FIXME Tempest parts have an additional lsb for
 608                  * fractional sysdiv (200 MHz / 2.5 == 80 MHz)
 609                  */
 610         }
 611
 612         stellaris_info->mck_desc = "";
 613
 614         switch (oscsrc) {
 615                 case 0:                         /* MOSC */
 616                         mainfreq = rcc_xtal[xtal];
 617                         break;
 618                 case 1:                         /* IOSC */
 619                         mainfreq = stellaris_info->iosc_freq;
 620                         stellaris_info->mck_desc = stellaris_info->iosc_desc;
 621                         break;
 622                 case 2:                         /* IOSC/4 */
 623                         mainfreq = stellaris_info->iosc_freq / 4;
 624                         stellaris_info->mck_desc = stellaris_info->iosc_desc;
 625                         break;
 626                 case 3:                         /* lowspeed */
 627                         /* Sandstorm doesn't have this 30K +/- 30% osc */
 628                         mainfreq = 30000;
 629                         stellaris_info->mck_desc = " (±30%)";
 630                         break;
 631                 case 8:                         /* hibernation osc */
 632                         /* not all parts support hibernation */
 633                         mainfreq = 32768;
 634                         break;
 635
 636                 default: /* NOTREACHED */
 637                         mainfreq = 0;
 638                         break;
 639         }
 640
 641         /* PLL is used if it's not bypassed; its output is 200 MHz
 642          * even when it runs at 400 MHz (adds divide-by-two stage).
 643          */
 644         if (!bypass)
 645                 mainfreq = 200000000;
 646
 647         if (usesysdiv)
 648                 stellaris_info->mck_freq = mainfreq/(1 + sysdiv);
 649         else
 650                 stellaris_info->mck_freq = mainfreq;
 651 }
 652
 653 /* Read device id register, main clock frequency register and fill in driver info structure */
 654 static int stellaris_read_part_info(struct flash_bank *bank)
 655 {
 656         struct stellaris_flash_bank *stellaris_info = bank->driver_priv;
 657         struct target *target = bank->target;
 658         uint32_t did0, did1, ver, fam;
 659         int i;
 660
 661         /* Read and parse chip identification register */
 662         target_read_u32(target, SCB_BASE | DID0, &did0);
 663         target_read_u32(target, SCB_BASE | DID1, &did1);
 664         target_read_u32(target, SCB_BASE | DC0, &stellaris_info->dc0);
 665         target_read_u32(target, SCB_BASE | DC1, &stellaris_info->dc1);
 666         LOG_DEBUG("did0 0x%" PRIx32 ", did1 0x%" PRIx32 ", dc0 0x%" PRIx32 ", dc1 0x%" PRIx32 "",
 667                   did0, did1, stellaris_info->dc0, stellaris_info->dc1);
 668
 669         ver = did0 >> 28;
 670         if ((ver != 0) && (ver != 1)) {
 671                 LOG_WARNING("Unknown did0 version, cannot identify target");
 672                 return ERROR_FLASH_OPERATION_FAILED;
 673         }
 674
 675         if (did1 == 0) {
 676                 LOG_WARNING("Cannot identify target as a Stellaris");
 677                 return ERROR_FLASH_OPERATION_FAILED;
 678         }
 679
 680         ver = did1 >> 28;
 681         fam = (did1 >> 24) & 0xF;
 682         if (((ver != 0) && (ver != 1)) || (fam != 0)) {
 683                 LOG_WARNING("Unknown did1 version/family.");
 684                 return ERROR_FLASH_OPERATION_FAILED;
 685         }
 686
 687         /* For Sandstorm, Fury, DustDevil:  current data sheets say IOSC
 688          * is 12 MHz, but some older parts have 15 MHz.  A few data sheets
 689          * even give _both_ numbers!  We'll use current numbers; IOSC is
 690          * always approximate.
 691          *
 692          * For Tempest:  IOSC is calibrated, 16 MHz
 693          * For Blizzard:  IOSC is calibrated, 16 MHz
 694          * For Firestorm:  IOSC is calibrated, 16 MHz
 695          */
 696         stellaris_info->iosc_freq = 12000000;
 697         stellaris_info->iosc_desc = " (±30%)";
 698         stellaris_info->xtal_mask = 0x0f;
 699
 700         /* get device class */
 701         if (DID0_VER(did0) > 0) {
 702                 stellaris_info->target_class = (did0 >> 16) & 0xFF;
 703         } else {
 704                 /* Sandstorm class */
 705                 stellaris_info->target_class = 0;
 706         }
 707
 708         switch (stellaris_info->target_class) {
 709                 case 0:                         /* Sandstorm */
 710                         /*
 711                          * Current (2009-August) parts seem to be rev C2 and use 12 MHz.
 712                          * Parts before rev C0 used 15 MHz; some C0 parts use 15 MHz
 713                          * (LM3S618), but some other C0 parts are 12 MHz (LM3S811).
 714                          */
 715                         if (((did0 >> 8) & 0xff) < 2) {
 716                                 stellaris_info->iosc_freq = 15000000;
 717                                 stellaris_info->iosc_desc = " (±50%)";
 718                         }
 719                         break;
 720
 721                 case 1:                 /* Fury */
 722                         break;
 723
 724                 case 4:                 /* Tempest */
 725                 case 5:                 /* Blizzard */
 726                 case 6:                 /* Firestorm */
 727                         stellaris_info->iosc_freq = 16000000;   /* +/- 1% */
 728                         stellaris_info->iosc_desc = " (±1%)";
 729                         /* FALL THROUGH */
 730
 731                 case 3:                 /* DustDevil */
 732                         stellaris_info->xtal_mask = 0x1f;
 733                         break;
 734
 735                 default:
 736                         LOG_WARNING("Unknown did0 class");
 737         }
 738
 739         for (i = 0; StellarisParts[i].partno; i++) {
 740                 if ((StellarisParts[i].partno == ((did1 >> 16) & 0xFF)) &&
 741                                 (StellarisParts[i].class == stellaris_info->target_class))
 742                         break;
 743         }
 744
 745         stellaris_info->target_name = StellarisParts[i].partname;
 746
 747         stellaris_info->did0 = did0;
 748         stellaris_info->did1 = did1;
 749
 750         stellaris_info->num_lockbits = 1 + (stellaris_info->dc0 & 0xFFFF);
 751         stellaris_info->num_pages = 2 * (1 + (stellaris_info->dc0 & 0xFFFF));
 752         stellaris_info->pagesize = 1024;
 753         stellaris_info->pages_in_lockregion = 2;
 754
 755         /* REVISIT for at least Tempest parts, read NVMSTAT.FWB too.
 756          * That exposes a 32-word Flash Write Buffer ... enabling
 757          * writes of more than one word at a time.
 758          */
 759
 760         return ERROR_OK;
 761 }
 762
 763 /***************************************************************************
 764 *       flash operations                                                       *
 765 ***************************************************************************/
 766
 767 static int stellaris_protect_check(struct flash_bank *bank)
 768 {
 769         struct stellaris_flash_bank *stellaris = bank->driver_priv;
 770         int status = ERROR_OK;
 771         unsigned i;
 772         unsigned page;
 773
 774         if (stellaris->did1 == 0)
 775                 return ERROR_FLASH_BANK_NOT_PROBED;
 776
 777         for (i = 0; i < (unsigned) bank->num_sectors; i++)
 778                 bank->sectors[i].is_protected = -1;
 779
 780         /* Read each Flash Memory Protection Program Enable (FMPPE) register
 781          * to report any pages that we can't write.  Ignore the Read Enable
 782          * register (FMPRE).
 783          */
 784         for (i = 0, page = 0;
 785                         i < DIV_ROUND_UP(stellaris->num_lockbits, 32u);
 786                         i++) {
 787                 uint32_t lockbits;
 788
 789                 status = target_read_u32(bank->target,
 790                                 SCB_BASE + (i ? (FMPPE0 + 4 * i) : FMPPE),
 791                                 &lockbits);
 792                 LOG_DEBUG("FMPPE%d = %#8.8x (status %d)", i,
 793                                 (unsigned) lockbits, status);
 794                 if (status != ERROR_OK)
 795                         goto done;
 796
 797                 for (unsigned j = 0; j < 32; j++) {
 798                         unsigned k;
 799
 800                         for (k = 0; k < stellaris->pages_in_lockregion; k++) {
 801                                 if (page >= (unsigned) bank->num_sectors)
 802                                         goto done;
 803                                 bank->sectors[page++].is_protected =
 804                                                 !(lockbits & (1 << j));
 805                         }
 806                 }
 807         }
 808
 809 done:
 810         return status;
 811 }
 812
 813 static int stellaris_erase(struct flash_bank *bank, int first, int last)
 814 {
 815         int banknr;
 816         uint32_t flash_fmc, flash_cris;
 817         struct stellaris_flash_bank *stellaris_info = bank->driver_priv;
 818         struct target *target = bank->target;
 819
 820         if (bank->target->state != TARGET_HALTED) {
 821                 LOG_ERROR("Target not halted");
 822                 return ERROR_TARGET_NOT_HALTED;
 823         }
 824
 825         if (stellaris_info->did1 == 0)
 826                 return ERROR_FLASH_BANK_NOT_PROBED;
 827
 828         if ((first < 0) || (last < first) || (last >= (int)stellaris_info->num_pages))
 829                 return ERROR_FLASH_SECTOR_INVALID;
 830
 831         if ((first == 0) && (last == ((int)stellaris_info->num_pages-1)))
 832                 return stellaris_mass_erase(bank);
 833
 834         /* Refresh flash controller timing */
 835         stellaris_read_clock_info(bank);
 836         stellaris_set_flash_timing(bank);
 837
 838         /* Clear and disable flash programming interrupts */
 839         target_write_u32(target, FLASH_CIM, 0);
 840         target_write_u32(target, FLASH_MISC, PMISC | AMISC);
 841
 842         /* REVISIT this clobbers state set by any halted firmware ...
 843          * it might want to process those IRQs.
 844          */
 845
 846         for (banknr = first; banknr <= last; banknr++) {
 847                 /* Address is first word in page */
 848                 target_write_u32(target, FLASH_FMA, banknr * stellaris_info->pagesize);
 849                 /* Write erase command */
 850                 target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_ERASE);
 851                 /* Wait until erase complete */
 852                 do {
 853                         target_read_u32(target, FLASH_FMC, &flash_fmc);
 854                 } while (flash_fmc & FMC_ERASE);
 855
 856                 /* Check acess violations */
 857                 target_read_u32(target, FLASH_CRIS, &flash_cris);
 858                 if (flash_cris & (AMASK)) {
 859                         LOG_WARNING("Error erasing flash page %i,  flash_cris 0x%" PRIx32 "",
 860                                         banknr, flash_cris);
 861                         target_write_u32(target, FLASH_CRIS, 0);
 862                         return ERROR_FLASH_OPERATION_FAILED;
 863                 }
 864
 865                 bank->sectors[banknr].is_erased = 1;
 866         }
 867
 868         return ERROR_OK;
 869 }
 870
 871 static int stellaris_protect(struct flash_bank *bank, int set, int first, int last)
 872 {
 873         uint32_t fmppe, flash_fmc, flash_cris;
 874         int lockregion;
 875
 876         struct stellaris_flash_bank *stellaris_info = bank->driver_priv;
 877         struct target *target = bank->target;
 878
 879         if (bank->target->state != TARGET_HALTED) {
 880                 LOG_ERROR("Target not halted");
 881                 return ERROR_TARGET_NOT_HALTED;
 882         }
 883
 884         if (!set) {
 885                 LOG_ERROR("Hardware doesn't support page-level unprotect. "
 886                         "Try the 'recover' command.");
 887                 return ERROR_COMMAND_SYNTAX_ERROR;
 888         }
 889
 890         if (stellaris_info->did1 == 0)
 891                 return ERROR_FLASH_BANK_NOT_PROBED;
 892
 893         /* lockregions are 2 pages ... must protect [even..odd] */
 894         if ((first < 0) || (first & 1)
 895                         || (last < first) || !(last & 1)
 896                         || (last >= 2 * stellaris_info->num_lockbits)) {
 897                 LOG_ERROR("Can't protect unaligned or out-of-range pages.");
 898                 return ERROR_FLASH_SECTOR_INVALID;
 899         }
 900
 901         /* Refresh flash controller timing */
 902         stellaris_read_clock_info(bank);
 903         stellaris_set_flash_timing(bank);
 904
 905         /* convert from pages to lockregions */
 906         first /= 2;
 907         last /= 2;
 908
 909         /* FIXME this assumes single FMPPE, for a max of 64K of flash!!
 910          * Current parts can be much bigger.
 911          */
 912         if (last >= 32) {
 913                 LOG_ERROR("No support yet for protection > 64K");
 914                 return ERROR_FLASH_OPERATION_FAILED;
 915         }
 916
 917         target_read_u32(target, SCB_BASE | FMPPE, &fmppe);
 918
 919         for (lockregion = first; lockregion <= last; lockregion++)
 920                 fmppe &= ~(1 << lockregion);
 921
 922         /* Clear and disable flash programming interrupts */
 923         target_write_u32(target, FLASH_CIM, 0);
 924         target_write_u32(target, FLASH_MISC, PMISC | AMISC);
 925
 926         /* REVISIT this clobbers state set by any halted firmware ...
 927          * it might want to process those IRQs.
 928          */
 929
 930         LOG_DEBUG("fmppe 0x%" PRIx32 "", fmppe);
 931         target_write_u32(target, SCB_BASE | FMPPE, fmppe);
 932
 933         /* Commit FMPPE */
 934         target_write_u32(target, FLASH_FMA, 1);
 935
 936         /* Write commit command */
 937         /* REVISIT safety check, since this cannot be undone
 938          * except by the "Recover a locked device" procedure.
 939          * REVISIT DustDevil-A0 parts have an erratum making FMPPE commits
 940          * inadvisable ... it makes future mass erase operations fail.
 941          */
 942         LOG_WARNING("Flash protection cannot be removed once committed, commit is NOT executed !");
 943         /* target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_COMT); */
 944
 945         /* Wait until erase complete */
 946         do {
 947                 target_read_u32(target, FLASH_FMC, &flash_fmc);
 948         } while (flash_fmc & FMC_COMT);
 949
 950         /* Check acess violations */
 951         target_read_u32(target, FLASH_CRIS, &flash_cris);
 952         if (flash_cris & (AMASK)) {
 953                 LOG_WARNING("Error setting flash page protection,  flash_cris 0x%" PRIx32 "", flash_cris);
 954                 target_write_u32(target, FLASH_CRIS, 0);
 955                 return ERROR_FLASH_OPERATION_FAILED;
 956         }
 957
 958         return ERROR_OK;
 959 }
 960
 961 /* see contib/loaders/flash/stellaris.s for src */
 962
 963 static const uint8_t stellaris_write_code[] = {
 964                                                                 /* write: */
 965         0xDF, 0xF8, 0x40, 0x40,         /* ldr          r4, pFLASH_CTRL_BASE */
 966         0xDF, 0xF8, 0x40, 0x50,         /* ldr          r5, FLASHWRITECMD */
 967                                                                 /* wait_fifo: */
 968         0xD0, 0xF8, 0x00, 0x80,         /* ldr          r8, [r0, #0] */
 969         0xB8, 0xF1, 0x00, 0x0F,         /* cmp          r8, #0 */
 970         0x17, 0xD0,                                     /* beq          exit */
 971         0x47, 0x68,                                     /* ldr          r7, [r0, #4] */
 972         0x47, 0x45,                                     /* cmp          r7, r8 */
 973         0xF7, 0xD0,                                     /* beq          wait_fifo */
 974                                                                 /* mainloop: */
 975         0x22, 0x60,                                     /* str          r2, [r4, #0] */
 976         0x02, 0xF1, 0x04, 0x02,         /* add          r2, r2, #4 */
 977         0x57, 0xF8, 0x04, 0x8B,         /* ldr          r8, [r7], #4 */
 978         0xC4, 0xF8, 0x04, 0x80,         /* str          r8, [r4, #4] */
 979         0xA5, 0x60,                                     /* str          r5, [r4, #8] */
 980                                                                 /* busy: */
 981         0xD4, 0xF8, 0x08, 0x80,         /* ldr          r8, [r4, #8] */
 982         0x18, 0xF0, 0x01, 0x0F,         /* tst          r8, #1 */
 983         0xFA, 0xD1,                                     /* bne          busy */
 984         0x8F, 0x42,                                     /* cmp          r7, r1 */
 985         0x28, 0xBF,                                     /* it           cs */
 986         0x00, 0xF1, 0x08, 0x07,         /* addcs        r7, r0, #8 */
 987         0x47, 0x60,                                     /* str          r7, [r0, #4] */
 988         0x01, 0x3B,                                     /* subs         r3, r3, #1 */
 989         0x03, 0xB1,                                     /* cbz          r3, exit */
 990         0xE2, 0xE7,                                     /* b            wait_fifo */
 991                                                                 /* exit: */
 992         0x00, 0xBE,                                     /* bkpt         #0 */
 993
 994         /* pFLASH_CTRL_BASE: */
 995         0x00, 0xD0, 0x0F, 0x40, /* .word        0x400FD000 */
 996         /* FLASHWRITECMD: */
 997         0x01, 0x00, 0x42, 0xA4  /* .word        0xA4420001 */
 998 };
 999 static int stellaris_write_block(struct flash_bank *bank,
1000                 uint8_t *buffer, uint32_t offset, uint32_t wcount)
1001 {
1002         struct target *target = bank->target;
1003         uint32_t buffer_size = 16384;
1004         struct working_area *source;
1005         struct working_area *write_algorithm;
1006         uint32_t address = bank->base + offset;
1007         struct reg_param reg_params[4];
1008         struct armv7m_algorithm armv7m_info;
1009         int retval = ERROR_OK;
1010
1011         /* power of two, and multiple of word size */
1012         static const unsigned buf_min = 128;
1013
1014         /* for small buffers it's faster not to download an algorithm */
1015         if (wcount * 4 < buf_min)
1016                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1017
1018         LOG_DEBUG("(bank=%p buffer=%p offset=%08" PRIx32 " wcount=%08" PRIx32 "",
1019                         bank, buffer, offset, wcount);
1020
1021         /* flash write code */
1022         if (target_alloc_working_area(target, sizeof(stellaris_write_code),
1023                         &write_algorithm) != ERROR_OK) {
1024                 LOG_DEBUG("no working area for block memory writes");
1025                 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1026         };
1027
1028         /* plus a buffer big enough for this data */
1029         if (wcount * 4 < buffer_size)
1030                 buffer_size = wcount * 4;
1031
1032         /* memory buffer */
1033         while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) {
1034                 buffer_size /= 2;
1035                 if (buffer_size <= buf_min) {
1036                         target_free_working_area(target, write_algorithm);
1037                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
1038                 }
1039                 LOG_DEBUG("retry target_alloc_working_area(%s, size=%u)",
1040                                 target_name(target), (unsigned) buffer_size);
1041         };
1042
1043         target_write_buffer(target, write_algorithm->address,
1044                         sizeof(stellaris_write_code),
1045                         (uint8_t *) stellaris_write_code);
1046
1047         armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
1048         armv7m_info.core_mode = ARMV7M_MODE_ANY;
1049
1050         init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
1051         init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
1052         init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
1053         init_reg_param(&reg_params[3], "r3", 32, PARAM_OUT);
1054
1055         buf_set_u32(reg_params[0].value, 0, 32, source->address);
1056         buf_set_u32(reg_params[1].value, 0, 32, source->address + source->size);
1057         buf_set_u32(reg_params[2].value, 0, 32, address);
1058         buf_set_u32(reg_params[3].value, 0, 32, wcount);
1059
1060         retval = target_run_flash_async_algorithm(target, buffer, wcount, 4,
1061                         0, NULL,
1062                         4, reg_params,
1063                         source->address, source->size,
1064                         write_algorithm->address, 0,
1065                         &armv7m_info);
1066
1067         if (retval == ERROR_FLASH_OPERATION_FAILED)
1068                 LOG_ERROR("error %d executing stellaris flash write algorithm", retval);
1069
1070         target_free_working_area(target, write_algorithm);
1071         target_free_working_area(target, source);
1072
1073         destroy_reg_param(&reg_params[0]);
1074         destroy_reg_param(&reg_params[1]);
1075         destroy_reg_param(&reg_params[2]);
1076         destroy_reg_param(&reg_params[3]);
1077
1078         return retval;
1079 }
1080
1081 static int stellaris_write(struct flash_bank *bank, uint8_t *buffer,
1082                 uint32_t offset, uint32_t count)
1083 {
1084         struct stellaris_flash_bank *stellaris_info = bank->driver_priv;
1085         struct target *target = bank->target;
1086         uint32_t address = offset;
1087         uint32_t flash_cris, flash_fmc;
1088         uint32_t words_remaining = (count / 4);
1089         uint32_t bytes_remaining = (count & 0x00000003);
1090         uint32_t bytes_written = 0;
1091         int retval;
1092
1093         if (bank->target->state != TARGET_HALTED) {
1094                 LOG_ERROR("Target not halted");
1095                 return ERROR_TARGET_NOT_HALTED;
1096         }
1097
1098         LOG_DEBUG("(bank=%p buffer=%p offset=%08" PRIx32 " count=%08" PRIx32 "",
1099                         bank, buffer, offset, count);
1100
1101         if (stellaris_info->did1 == 0)
1102                 return ERROR_FLASH_BANK_NOT_PROBED;
1103
1104         if (offset & 0x3) {
1105                 LOG_WARNING("offset size must be word aligned");
1106                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
1107         }
1108
1109         if (offset + count > bank->size)
1110                 return ERROR_FLASH_DST_OUT_OF_BANK;
1111
1112         /* Refresh flash controller timing */
1113         stellaris_read_clock_info(bank);
1114         stellaris_set_flash_timing(bank);
1115
1116         /* Clear and disable flash programming interrupts */
1117         target_write_u32(target, FLASH_CIM, 0);
1118         target_write_u32(target, FLASH_MISC, PMISC | AMISC);
1119
1120         /* REVISIT this clobbers state set by any halted firmware ...
1121          * it might want to process those IRQs.
1122          */
1123
1124         /* multiple words to be programmed? */
1125         if (words_remaining > 0) {
1126                 /* try using a block write */
1127                 retval = stellaris_write_block(bank, buffer, offset,
1128                                 words_remaining);
1129                 if (retval != ERROR_OK) {
1130                         if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
1131                                 LOG_DEBUG("writing flash word-at-a-time");
1132                         } else if (retval == ERROR_FLASH_OPERATION_FAILED) {
1133                                 /* if an error occured, we examine the reason, and quit */
1134                                 target_read_u32(target, FLASH_CRIS, &flash_cris);
1135
1136                                 LOG_ERROR("flash writing failed with CRIS: 0x%" PRIx32 "", flash_cris);
1137                                 return ERROR_FLASH_OPERATION_FAILED;
1138                         }
1139                 } else {
1140                         buffer += words_remaining * 4;
1141                         address += words_remaining * 4;
1142                         words_remaining = 0;
1143                 }
1144         }
1145
1146         while (words_remaining > 0) {
1147                 if (!(address & 0xff))
1148                         LOG_DEBUG("0x%" PRIx32 "", address);
1149
1150                 /* Program one word */
1151                 target_write_u32(target, FLASH_FMA, address);
1152                 target_write_buffer(target, FLASH_FMD, 4, buffer);
1153                 target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_WRITE);
1154                 /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
1155                 /* Wait until write complete */
1156                 do {
1157                         target_read_u32(target, FLASH_FMC, &flash_fmc);
1158                 } while (flash_fmc & FMC_WRITE);
1159
1160                 buffer += 4;
1161                 address += 4;
1162                 words_remaining--;
1163         }
1164
1165         if (bytes_remaining) {
1166                 uint8_t last_word[4] = {0xff, 0xff, 0xff, 0xff};
1167
1168                 /* copy the last remaining bytes into the write buffer */
1169                 memcpy(last_word, buffer+bytes_written, bytes_remaining);
1170
1171                 if (!(address & 0xff))
1172                         LOG_DEBUG("0x%" PRIx32 "", address);
1173
1174                 /* Program one word */
1175                 target_write_u32(target, FLASH_FMA, address);
1176                 target_write_buffer(target, FLASH_FMD, 4, last_word);
1177                 target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_WRITE);
1178                 /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
1179                 /* Wait until write complete */
1180                 do {
1181                         target_read_u32(target, FLASH_FMC, &flash_fmc);
1182                 } while (flash_fmc & FMC_WRITE);
1183         }
1184
1185         /* Check access violations */
1186         target_read_u32(target, FLASH_CRIS, &flash_cris);
1187         if (flash_cris & (AMASK)) {
1188                 LOG_DEBUG("flash_cris 0x%" PRIx32 "", flash_cris);
1189                 return ERROR_FLASH_OPERATION_FAILED;
1190         }
1191         return ERROR_OK;
1192 }
1193
1194 static int stellaris_probe(struct flash_bank *bank)
1195 {
1196         struct stellaris_flash_bank *stellaris_info = bank->driver_priv;
1197         int retval;
1198
1199         /* If this is a stellaris chip, it has flash; probe() is just
1200          * to figure out how much is present.  Only do it once.
1201          */
1202         if (stellaris_info->did1 != 0)
1203                 return ERROR_OK;
1204
1205         /* stellaris_read_part_info() already handled error checking and
1206          * reporting.  Note that it doesn't write, so we don't care about
1207          * whether the target is halted or not.
1208          */
1209         retval = stellaris_read_part_info(bank);
1210         if (retval != ERROR_OK)
1211                 return retval;
1212
1213         if (bank->sectors) {
1214                 free(bank->sectors);
1215                 bank->sectors = NULL;
1216         }
1217
1218         /* provide this for the benefit of the NOR flash framework */
1219         bank->size = 1024 * stellaris_info->num_pages;
1220         bank->num_sectors = stellaris_info->num_pages;
1221         bank->sectors = calloc(bank->num_sectors, sizeof(struct flash_sector));
1222         for (int i = 0; i < bank->num_sectors; i++) {
1223                 bank->sectors[i].offset = i * stellaris_info->pagesize;
1224                 bank->sectors[i].size = stellaris_info->pagesize;
1225                 bank->sectors[i].is_erased = -1;
1226                 bank->sectors[i].is_protected = -1;
1227         }
1228
1229         return retval;
1230 }
1231
1232 static int stellaris_mass_erase(struct flash_bank *bank)
1233 {
1234         struct target *target = NULL;
1235         struct stellaris_flash_bank *stellaris_info = NULL;
1236         uint32_t flash_fmc;
1237
1238         stellaris_info = bank->driver_priv;
1239         target = bank->target;
1240
1241         if (target->state != TARGET_HALTED) {
1242                 LOG_ERROR("Target not halted");
1243                 return ERROR_TARGET_NOT_HALTED;
1244         }
1245
1246         if (stellaris_info->did1 == 0)
1247                 return ERROR_FLASH_BANK_NOT_PROBED;
1248
1249         /* Refresh flash controller timing */
1250         stellaris_read_clock_info(bank);
1251         stellaris_set_flash_timing(bank);
1252
1253         /* Clear and disable flash programming interrupts */
1254         target_write_u32(target, FLASH_CIM, 0);
1255         target_write_u32(target, FLASH_MISC, PMISC | AMISC);
1256
1257         /* REVISIT this clobbers state set by any halted firmware ...
1258          * it might want to process those IRQs.
1259          */
1260
1261         target_write_u32(target, FLASH_FMA, 0);
1262         target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
1263         /* Wait until erase complete */
1264         do {
1265                 target_read_u32(target, FLASH_FMC, &flash_fmc);
1266         } while (flash_fmc & FMC_MERASE);
1267
1268         /* if device has > 128k, then second erase cycle is needed
1269          * this is only valid for older devices, but will not hurt */
1270         if (stellaris_info->num_pages * stellaris_info->pagesize > 0x20000) {
1271                 target_write_u32(target, FLASH_FMA, 0x20000);
1272                 target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
1273                 /* Wait until erase complete */
1274                 do {
1275                         target_read_u32(target, FLASH_FMC, &flash_fmc);
1276                 } while (flash_fmc & FMC_MERASE);
1277         }
1278
1279         return ERROR_OK;
1280 }
1281
1282 COMMAND_HANDLER(stellaris_handle_mass_erase_command)
1283 {
1284         int i;
1285
1286         if (CMD_ARGC < 1)
1287                 return ERROR_COMMAND_SYNTAX_ERROR;
1288
1289         struct flash_bank *bank;
1290         int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
1291         if (ERROR_OK != retval)
1292                 return retval;
1293
1294         if (stellaris_mass_erase(bank) == ERROR_OK) {
1295                 /* set all sectors as erased */
1296                 for (i = 0; i < bank->num_sectors; i++)
1297                         bank->sectors[i].is_erased = 1;
1298
1299                 command_print(CMD_CTX, "stellaris mass erase complete");
1300         } else
1301                 command_print(CMD_CTX, "stellaris mass erase failed");
1302
1303         return ERROR_OK;
1304 }
1305
1306 /**
1307  * Perform the Stellaris "Recovering a 'Locked' Device procedure.
1308  * This performs a mass erase and then restores all nonvolatile registers
1309  * (including USER_* registers and flash lock bits) to their defaults.
1310  * Accordingly, flash can be reprogrammed, and JTAG can be used.
1311  *
1312  * NOTE that DustDevil parts (at least rev A0 silicon) have errata which
1313  * can affect this operation if flash protection has been enabled.
1314  */
1315 COMMAND_HANDLER(stellaris_handle_recover_command)
1316 {
1317         struct flash_bank *bank;
1318         int retval;
1319
1320         retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
1321         if (retval != ERROR_OK)
1322                 return retval;
1323
1324         /* REVISIT ... it may be worth sanity checking that the AP is
1325          * inactive before we start.  ARM documents that switching a DP's
1326          * mode while it's active can cause fault modes that need a power
1327          * cycle to recover.
1328          */
1329
1330         /* assert SRST */
1331         if (!(jtag_get_reset_config() & RESET_HAS_SRST)) {
1332                 LOG_ERROR("Can't recover Stellaris flash without SRST");
1333                 return ERROR_FAIL;
1334         }
1335         adapter_assert_reset();
1336
1337         for (int i = 0; i < 5; i++) {
1338                 retval = dap_to_swd(bank->target);
1339                 if (retval != ERROR_OK)
1340                         goto done;
1341
1342                 retval = dap_to_jtag(bank->target);
1343                 if (retval != ERROR_OK)
1344                         goto done;
1345         }
1346
1347         /* de-assert SRST */
1348         adapter_deassert_reset();
1349         retval = jtag_execute_queue();
1350
1351         /* wait 400+ msec ... OK, "1+ second" is simpler */
1352         usleep(1000);
1353
1354         /* USER INTERVENTION required for the power cycle
1355          * Restarting OpenOCD is likely needed because of mode switching.
1356          */
1357         LOG_INFO("USER ACTION:  "
1358                 "power cycle Stellaris chip, then restart OpenOCD.");
1359
1360 done:
1361         return retval;
1362 }
1363
1364 static const struct command_registration stellaris_exec_command_handlers[] = {
1365         {
1366                 .name = "mass_erase",
1367                 .usage = "<bank>",
1368                 .handler = stellaris_handle_mass_erase_command,
1369                 .mode = COMMAND_EXEC,
1370                 .help = "erase entire device",
1371         },
1372         {
1373                 .name = "recover",
1374                 .handler = stellaris_handle_recover_command,
1375                 .mode = COMMAND_EXEC,
1376                 .usage = "bank_id",
1377                 .help = "recover (and erase) locked device",
1378         },
1379         COMMAND_REGISTRATION_DONE
1380 };
1381 static const struct command_registration stellaris_command_handlers[] = {
1382         {
1383                 .name = "stellaris",
1384                 .mode = COMMAND_EXEC,
1385                 .help = "Stellaris flash command group",
1386                 .usage = "",
1387                 .chain = stellaris_exec_command_handlers,
1388         },
1389         COMMAND_REGISTRATION_DONE
1390 };
1391
1392 struct flash_driver stellaris_flash = {
1393         .name = "stellaris",
1394         .commands = stellaris_command_handlers,
1395         .flash_bank_command = stellaris_flash_bank_command,
1396         .erase = stellaris_erase,
1397         .protect = stellaris_protect,
1398         .write = stellaris_write,
1399         .read = default_flash_read,
1400         .probe = stellaris_probe,
1401         .auto_probe = stellaris_probe,
1402         .erase_check = default_flash_blank_check,
1403         .protect_check = stellaris_protect_check,
1404         .info = get_stellaris_info,
1405 };