1 /***************************************************************************
2 * Copyright (C) 2011 by Mathias Kuester *
5 * Copyright (C) 2011 sleep(5) ltd *
6 * tomas@sleepfive.com *
8 * Copyright (C) 2012 by Christopher D. Kilgour *
9 * techie at whiterocker.com *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ***************************************************************************/
32 #include "helper/binarybuffer.h"
35 * Implementation Notes
37 * The persistent memories in the Kinetis chip families K10 through
38 * K70 are all manipulated with the Flash Memory Module. Some
39 * variants call this module the FTFE, others call it the FTFL. To
40 * indicate that both are considered here, we use FTFX.
42 * Within the module, according to the chip variant, the persistent
43 * memory is divided into what Freescale terms Program Flash, FlexNVM,
44 * and FlexRAM. All chip variants have Program Flash. Some chip
45 * variants also have FlexNVM and FlexRAM, which always appear
48 * A given Kinetis chip may have 2 or 4 blocks of flash. Here we map
49 * each block to a separate bank. Each block size varies by chip and
50 * may be determined by the read-only SIM_FCFG1 register. The sector
51 * size within each bank/block varies by the chip granularity as
54 * Kinetis offers four different of flash granularities applicable
55 * across the chip families. The granularity is apparently reflected
56 * by at least the reference manual suffix. For example, for chip
57 * MK60FN1M0VLQ12, reference manual K60P144M150SF3RM ends in "SF3RM",
58 * where the "3" indicates there are four flash blocks with 4kiB
59 * sectors. All possible granularities are indicated below.
61 * The first half of the flash (1 or 2 blocks, depending on the
62 * granularity) is always Program Flash and always starts at address
63 * 0x00000000. The "PFLSH" flag, bit 23 of the read-only SIM_FCFG2
64 * register, determines whether the second half of the flash is also
65 * Program Flash or FlexNVM+FlexRAM. When PFLSH is set, the second
66 * half of flash is Program Flash and is contiguous in the memory map
67 * from the first half. When PFLSH is clear, the second half of flash
68 * is FlexNVM and always starts at address 0x10000000. FlexRAM, which
69 * is also present when PFLSH is clear, always starts at address
72 * The Flash Memory Module provides a register set where flash
73 * commands are loaded to perform flash operations like erase and
74 * program. Different commands are available depending on whether
75 * Program Flash or FlexNVM/FlexRAM is being manipulated. Although
76 * the commands used are quite consistent between flash blocks, the
77 * parameters they accept differ according to the flash granularity.
78 * Some Kinetis chips have different granularity between Program Flash
79 * and FlexNVM/FlexRAM, so flash command arguments may differ between
80 * blocks in the same chip.
82 * Although not documented as such by Freescale, it appears that bits
83 * 8:7 of the read-only SIM_SDID register reflect the granularity
84 * settings 0..3, so sector sizes and block counts are applicable
85 * according to the following table.
88 unsigned pflash_sector_size_bytes;
89 unsigned nvm_sector_size_bytes;
91 } kinetis_flash_params[4] = {
98 struct kinetis_flash_bank {
100 unsigned bank_ordinal;
101 uint32_t sector_size;
102 uint32_t protection_size;
116 FLASH_BANK_COMMAND_HANDLER(kinetis_flash_bank_command)
118 struct kinetis_flash_bank *bank_info;
121 return ERROR_COMMAND_SYNTAX_ERROR;
123 LOG_INFO("add flash_bank kinetis %s", bank->name);
125 bank_info = malloc(sizeof(struct kinetis_flash_bank));
127 memset(bank_info, 0, sizeof(struct kinetis_flash_bank));
129 bank->driver_priv = bank_info;
134 static int kinetis_protect(struct flash_bank *bank, int set, int first,
137 LOG_WARNING("kinetis_protect not supported yet");
140 if (bank->target->state != TARGET_HALTED) {
141 LOG_ERROR("Target not halted");
142 return ERROR_TARGET_NOT_HALTED;
145 return ERROR_FLASH_BANK_INVALID;
148 static int kinetis_protect_check(struct flash_bank *bank)
150 struct kinetis_flash_bank *kinfo = bank->driver_priv;
152 if (bank->target->state != TARGET_HALTED) {
153 LOG_ERROR("Target not halted");
154 return ERROR_TARGET_NOT_HALTED;
157 if (kinfo->flash_class == FC_PFLASH) {
160 uint32_t fprot, psec;
163 /* read protection register FTFx_FPROT */
164 result = target_read_memory(bank->target, 0x40020010, 1, 4, buffer);
166 if (result != ERROR_OK)
169 fprot = target_buffer_get_u32(bank->target, buffer);
172 * Every bit protects 1/32 of the full flash (not necessarily
173 * just this bank), but we enforce the bank ordinals for
174 * PFlash to start at zero.
176 b = kinfo->bank_ordinal * (bank->size / kinfo->protection_size);
177 for (psec = 0, i = 0; i < bank->num_sectors; i++) {
178 if ((fprot >> b) & 1)
179 bank->sectors[i].is_protected = 0;
181 bank->sectors[i].is_protected = 1;
183 psec += bank->sectors[i].size;
185 if (psec >= kinfo->protection_size) {
191 LOG_ERROR("Protection checks for FlexNVM not yet supported");
192 return ERROR_FLASH_BANK_INVALID;
198 static int kinetis_ftfx_command(struct flash_bank *bank, uint32_t w0,
199 uint32_t w1, uint32_t w2, uint8_t *ftfx_fstat)
205 for (i = 0; i < 50; i++) {
207 target_read_memory(bank->target, 0x40020000, 1, 1, buffer);
209 if (result != ERROR_OK)
212 if (buffer[0] & 0x80)
218 if (buffer[0] != 0x80) {
219 /* reset error flags */
222 target_write_memory(bank->target, 0x40020000, 1, 1, buffer);
223 if (result != ERROR_OK)
227 target_buffer_set_u32(bank->target, buffer, w0);
228 target_buffer_set_u32(bank->target, buffer + 4, w1);
229 target_buffer_set_u32(bank->target, buffer + 8, w2);
231 result = target_write_memory(bank->target, 0x40020004, 4, 3, buffer);
233 if (result != ERROR_OK)
238 result = target_write_memory(bank->target, 0x40020000, 1, 1, buffer);
239 if (result != ERROR_OK)
243 for (i = 0; i < 50; i++) {
245 target_read_memory(bank->target, 0x40020000, 1, 1, ftfx_fstat);
247 if (result != ERROR_OK)
250 if (*ftfx_fstat & 0x80)
254 if ((*ftfx_fstat & 0xf0) != 0x80) {
256 ("ftfx command failed FSTAT: %02X W0: %08X W1: %08X W2: %08X",
257 *ftfx_fstat, w0, w1, w2);
259 return ERROR_FLASH_OPERATION_FAILED;
265 static int kinetis_erase(struct flash_bank *bank, int first, int last)
268 uint32_t w0 = 0, w1 = 0, w2 = 0;
270 if (bank->target->state != TARGET_HALTED) {
271 LOG_ERROR("Target not halted");
272 return ERROR_TARGET_NOT_HALTED;
275 if ((first > bank->num_sectors) || (last > bank->num_sectors))
276 return ERROR_FLASH_OPERATION_FAILED;
279 * FIXME: TODO: use the 'Erase Flash Block' command if the
280 * requested erase is PFlash or NVM and encompasses the entire
281 * block. Should be quicker.
283 for (i = first; i <= last; i++) {
285 /* set command and sector address */
286 w0 = (0x09 << 24) | (bank->base + bank->sectors[i].offset);
288 result = kinetis_ftfx_command(bank, w0, w1, w2, &ftfx_fstat);
290 if (result != ERROR_OK) {
291 LOG_WARNING("erase sector %d failed", i);
292 return ERROR_FLASH_OPERATION_FAILED;
295 bank->sectors[i].is_erased = 1;
300 ("flash configuration field erased, please reset the device");
306 static int kinetis_write(struct flash_bank *bank, uint8_t *buffer,
307 uint32_t offset, uint32_t count)
309 unsigned int i, result, fallback = 0;
311 uint32_t wc, w0 = 0, w1 = 0, w2 = 0;
312 struct kinetis_flash_bank *kinfo = bank->driver_priv;
314 if (bank->target->state != TARGET_HALTED) {
315 LOG_ERROR("Target not halted");
316 return ERROR_TARGET_NOT_HALTED;
319 if (kinfo->flash_class == FC_FLEX_NVM) {
322 LOG_DEBUG("flash write into FlexNVM @%08X", offset);
324 /* make flex ram available */
325 w0 = (0x81 << 24) | 0x00ff0000;
327 result = kinetis_ftfx_command(bank, w0, w1, w2, &ftfx_fstat);
329 if (result != ERROR_OK)
330 return ERROR_FLASH_OPERATION_FAILED;
332 /* check if ram ready */
333 result = target_read_memory(bank->target, 0x40020001, 1, 1, buf);
335 if (result != ERROR_OK)
338 if (!(buf[0] & (1 << 1))) {
339 /* fallback to longword write */
342 LOG_WARNING("ram not ready, fallback to slow longword write (FCNFG: %02X)",
346 LOG_DEBUG("flash write into PFLASH @08%X", offset);
350 /* program section command */
352 unsigned prog_section_bytes = kinfo->sector_size >> 8;
353 for (i = 0; i < count; i += kinfo->sector_size) {
356 wc = kinfo->sector_size / 4;
358 if ((count - i) < kinfo->sector_size) {
363 LOG_DEBUG("write section @ %08X with length %d",
366 /* write data to flexram */
368 target_write_memory(bank->target, 0x14000000, 4, wc,
371 if (result != ERROR_OK) {
372 LOG_ERROR("target_write_memory failed");
377 /* execute section command */
378 w0 = (0x0b << 24) | (bank->base + offset + i);
379 w1 = ((wc * 4 / prog_section_bytes) << 16);
381 result = kinetis_ftfx_command(bank, w0, w1, w2, &ftfx_fstat);
383 if (result != ERROR_OK)
384 return ERROR_FLASH_OPERATION_FAILED;
387 /* program longword command, not supported in "SF3" devices */
388 else if (kinfo->granularity != 3) {
389 for (i = 0; i < count; i += 4) {
392 LOG_DEBUG("write longword @ %08X", offset + i);
394 w0 = (0x06 << 24) | (bank->base + offset + i);
395 w1 = buf_get_u32(buffer + offset + i, 0, 32);
397 result = kinetis_ftfx_command(bank, w0, w1, w2, &ftfx_fstat);
399 if (result != ERROR_OK)
400 return ERROR_FLASH_OPERATION_FAILED;
403 LOG_ERROR("Flash write strategy not implemented");
404 return ERROR_FLASH_OPERATION_FAILED;
410 static int kinetis_read_part_info(struct flash_bank *bank)
415 uint8_t fcfg1_nvmsize, fcfg1_pfsize, fcfg1_eesize, fcfg2_pflsh;
416 uint32_t nvm_size = 0, pf_size = 0, ee_size = 0;
417 unsigned granularity, num_blocks = 0, num_pflash_blocks = 0, num_nvm_blocks = 0,
418 first_nvm_bank = 0, reassign = 0;
419 struct kinetis_flash_bank *kinfo = bank->driver_priv;
421 result = target_read_memory(bank->target, 0x40048024, 1, 4, buf);
422 if (result != ERROR_OK)
424 kinfo->sim_sdid = target_buffer_get_u32(bank->target, buf);
425 granularity = (kinfo->sim_sdid >> 7) & 0x03;
426 result = target_read_memory(bank->target, 0x4004804c, 1, 4, buf);
427 if (result != ERROR_OK)
429 kinfo->sim_fcfg1 = target_buffer_get_u32(bank->target, buf);
430 result = target_read_memory(bank->target, 0x40048050, 1, 4, buf);
431 if (result != ERROR_OK)
433 kinfo->sim_fcfg2 = target_buffer_get_u32(bank->target, buf);
434 fcfg2_pflsh = (kinfo->sim_fcfg2 >> 23) & 0x01;
436 LOG_DEBUG("SDID: %08X FCFG1: %08X FCFG2: %08X", kinfo->sim_sdid,
437 kinfo->sim_fcfg1, kinfo->sim_fcfg2);
439 fcfg1_nvmsize = (uint8_t)((kinfo->sim_fcfg1 >> 28) & 0x0f);
440 fcfg1_pfsize = (uint8_t)((kinfo->sim_fcfg1 >> 24) & 0x0f);
441 fcfg1_eesize = (uint8_t)((kinfo->sim_fcfg1 >> 16) & 0x0f);
443 /* when the PFLSH bit is set, there is no FlexNVM/FlexRAM */
445 switch (fcfg1_nvmsize) {
450 nvm_size = 1 << (14 + (fcfg1_nvmsize >> 1));
453 if (granularity == 3)
463 switch (fcfg1_eesize) {
474 ee_size = (16 << (10 - fcfg1_eesize));
482 switch (fcfg1_pfsize) {
489 pf_size = 1 << (14 + (fcfg1_pfsize >> 1));
492 if (granularity == 3)
494 else if (fcfg2_pflsh)
504 LOG_DEBUG("FlexNVM: %d PFlash: %d FlexRAM: %d PFLSH: %d",
505 nvm_size, pf_size, ee_size, fcfg2_pflsh);
507 num_blocks = kinetis_flash_params[granularity].num_blocks;
508 num_pflash_blocks = num_blocks / (2 - fcfg2_pflsh);
509 first_nvm_bank = num_pflash_blocks;
510 num_nvm_blocks = num_blocks - num_pflash_blocks;
512 LOG_DEBUG("%d blocks total: %d PFlash, %d FlexNVM",
513 num_blocks, num_pflash_blocks, num_nvm_blocks);
516 * If the flash class is already assigned, verify the
519 if (kinfo->flash_class != FC_AUTO) {
520 if (kinfo->bank_ordinal != (unsigned) bank->bank_number) {
521 LOG_WARNING("Flash ordinal/bank number mismatch");
523 } else if (kinfo->granularity != granularity) {
524 LOG_WARNING("Flash granularity mismatch");
527 switch (kinfo->flash_class) {
529 if (kinfo->bank_ordinal >= first_nvm_bank) {
530 LOG_WARNING("Class mismatch, bank %d is not PFlash",
533 } else if (bank->size != (pf_size / num_pflash_blocks)) {
534 LOG_WARNING("PFlash size mismatch");
536 } else if (bank->base !=
537 (0x00000000 + bank->size * kinfo->bank_ordinal)) {
538 LOG_WARNING("PFlash address range mismatch");
540 } else if (kinfo->sector_size !=
541 kinetis_flash_params[granularity].pflash_sector_size_bytes) {
542 LOG_WARNING("PFlash sector size mismatch");
545 LOG_DEBUG("PFlash bank %d already configured okay",
546 kinfo->bank_ordinal);
550 if ((kinfo->bank_ordinal >= num_blocks) ||
551 (kinfo->bank_ordinal < first_nvm_bank)) {
552 LOG_WARNING("Class mismatch, bank %d is not FlexNVM",
555 } else if (bank->size != (nvm_size / num_nvm_blocks)) {
556 LOG_WARNING("FlexNVM size mismatch");
558 } else if (bank->base !=
559 (0x10000000 + bank->size * kinfo->bank_ordinal)) {
560 LOG_WARNING("FlexNVM address range mismatch");
562 } else if (kinfo->sector_size !=
563 kinetis_flash_params[granularity].nvm_sector_size_bytes) {
564 LOG_WARNING("FlexNVM sector size mismatch");
567 LOG_DEBUG("FlexNVM bank %d already configured okay",
568 kinfo->bank_ordinal);
572 if (kinfo->bank_ordinal != num_blocks) {
573 LOG_WARNING("Class mismatch, bank %d is not FlexRAM",
576 } else if (bank->size != ee_size) {
577 LOG_WARNING("FlexRAM size mismatch");
579 } else if (bank->base != 0x14000000) {
580 LOG_WARNING("FlexRAM address mismatch");
582 } else if (kinfo->sector_size !=
583 kinetis_flash_params[granularity].nvm_sector_size_bytes) {
584 LOG_WARNING("FlexRAM sector size mismatch");
587 LOG_DEBUG("FlexRAM bank %d already configured okay",
588 kinfo->bank_ordinal);
593 LOG_WARNING("Unknown or inconsistent flash class");
599 LOG_INFO("Probing flash info for bank %d", bank->bank_number);
606 kinfo->granularity = granularity;
608 if ((unsigned)bank->bank_number < num_pflash_blocks) {
609 /* pflash, banks start at address zero */
610 kinfo->flash_class = FC_PFLASH;
611 bank->size = (pf_size / num_pflash_blocks);
612 bank->base = 0x00000000 + bank->size * bank->bank_number;
613 kinfo->sector_size = kinetis_flash_params[granularity].pflash_sector_size_bytes;
614 kinfo->protection_size = pf_size / 32;
615 } else if ((unsigned)bank->bank_number < num_blocks) {
616 /* nvm, banks start at address 0x10000000 */
617 kinfo->flash_class = FC_FLEX_NVM;
618 bank->size = (nvm_size / num_nvm_blocks);
619 bank->base = 0x10000000 + bank->size * (bank->bank_number - first_nvm_bank);
620 kinfo->sector_size = kinetis_flash_params[granularity].nvm_sector_size_bytes;
621 kinfo->protection_size = 0; /* FIXME: TODO: depends on DEPART bits, chip */
622 } else if ((unsigned)bank->bank_number == num_blocks) {
623 LOG_ERROR("FlexRAM support not yet implemented");
624 return ERROR_FLASH_OPER_UNSUPPORTED;
626 LOG_ERROR("Cannot determine parameters for bank %d, only %d banks on device",
627 bank->bank_number, num_blocks);
628 return ERROR_FLASH_BANK_INVALID;
633 bank->sectors = NULL;
636 bank->num_sectors = bank->size / kinfo->sector_size;
637 assert(bank->num_sectors > 0);
638 bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
640 for (i = 0; i < bank->num_sectors; i++) {
641 bank->sectors[i].offset = offset;
642 bank->sectors[i].size = kinfo->sector_size;
643 offset += kinfo->sector_size;
644 bank->sectors[i].is_erased = -1;
645 bank->sectors[i].is_protected = 1;
651 static int kinetis_probe(struct flash_bank *bank)
653 if (bank->target->state != TARGET_HALTED) {
654 LOG_WARNING("Cannot communicate... target not halted.");
655 return ERROR_TARGET_NOT_HALTED;
658 return kinetis_read_part_info(bank);
661 static int kinetis_auto_probe(struct flash_bank *bank)
663 struct kinetis_flash_bank *kinfo = bank->driver_priv;
668 return kinetis_probe(bank);
671 static int kinetis_info(struct flash_bank *bank, char *buf, int buf_size)
673 const char *bank_class_names[] = {
674 "(ANY)", "PFlash", "FlexNVM", "FlexRAM"
677 struct kinetis_flash_bank *kinfo = bank->driver_priv;
679 (void) snprintf(buf, buf_size,
680 "%s driver for %s flash bank %s at 0x%8.8" PRIx32 "",
681 bank->driver->name, bank_class_names[kinfo->flash_class],
682 bank->name, bank->base);
687 static int kinetis_blank_check(struct flash_bank *bank)
689 struct kinetis_flash_bank *kinfo = bank->driver_priv;
691 if (bank->target->state != TARGET_HALTED) {
692 LOG_ERROR("Target not halted");
693 return ERROR_TARGET_NOT_HALTED;
696 if (kinfo->flash_class == FC_PFLASH) {
698 uint32_t w0 = 0, w1 = 0, w2 = 0;
701 /* check if whole bank is blank */
702 w0 = (0x00 << 24) | bank->base;
703 w1 = 0; /* "normal margin" */
705 result = kinetis_ftfx_command(bank, w0, w1, w2, &ftfx_fstat);
707 if (result != ERROR_OK)
710 if (ftfx_fstat & 0x01) {
711 /* the whole bank is not erased, check sector-by-sector */
713 for (i = 0; i < bank->num_sectors; i++) {
714 w0 = (0x01 << 24) | (bank->base + bank->sectors[i].offset);
715 w1 = (0x100 << 16) | 0; /* normal margin */
717 result = kinetis_ftfx_command(bank, w0, w1, w2, &ftfx_fstat);
719 if (result == ERROR_OK) {
720 bank->sectors[i].is_erased = !(ftfx_fstat & 0x01);
722 LOG_DEBUG("Ignoring errored PFlash sector blank-check");
723 bank->sectors[i].is_erased = -1;
727 /* the whole bank is erased, update all sectors */
729 for (i = 0; i < bank->num_sectors; i++)
730 bank->sectors[i].is_erased = 1;
733 LOG_WARNING("kinetis_blank_check not supported yet for FlexNVM");
734 return ERROR_FLASH_OPERATION_FAILED;
740 static int kinetis_flash_read(struct flash_bank *bank,
741 uint8_t *buffer, uint32_t offset, uint32_t count)
743 LOG_WARNING("kinetis_flash_read not supported yet");
745 if (bank->target->state != TARGET_HALTED) {
746 LOG_ERROR("Target not halted");
747 return ERROR_TARGET_NOT_HALTED;
750 return ERROR_FLASH_OPERATION_FAILED;
753 struct flash_driver kinetis_flash = {
755 .flash_bank_command = kinetis_flash_bank_command,
756 .erase = kinetis_erase,
757 .protect = kinetis_protect,
758 .write = kinetis_write,
759 .read = kinetis_flash_read,
760 .probe = kinetis_probe,
761 .auto_probe = kinetis_auto_probe,
762 .erase_check = kinetis_blank_check,
763 .protect_check = kinetis_protect_check,
764 .info = kinetis_info,