1 /***************************************************************************
2 * Copyright (C) 2009 by *
3 * Rolf Meeser <rolfm_9dq@yahoo.de> *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
19 ***************************************************************************/
26 #include <helper/binarybuffer.h>
27 #include <target/algorithm.h>
28 #include <target/arm.h>
29 #include <target/image.h>
34 /* Some flash constants */
35 #define FLASH_PAGE_SIZE 512 /* bytes */
36 #define FLASH_ERASE_TIME 100000 /* microseconds */
37 #define FLASH_PROGRAM_TIME 1000 /* microseconds */
39 /* Chip ID / Feature Registers */
40 #define CHIPID 0xE0000000 /* Chip ID */
41 #define FEAT0 0xE0000100 /* Chip feature 0 */
42 #define FEAT1 0xE0000104 /* Chip feature 1 */
43 #define FEAT2 0xE0000108 /* Chip feature 2 (contains flash size indicator) */
44 #define FEAT3 0xE000010C /* Chip feature 3 */
46 #define EXPECTED_CHIPID 0x209CE02B /* Chip ID of all LPC2900 devices */
48 /* Flash/EEPROM Control Registers */
49 #define FCTR 0x20200000 /* Flash control */
50 #define FPTR 0x20200008 /* Flash program-time */
51 #define FTCTR 0x2020000C /* Flash test control */
52 #define FBWST 0x20200010 /* Flash bridge wait-state */
53 #define FCRA 0x2020001C /* Flash clock divider */
54 #define FMSSTART 0x20200020 /* Flash Built-In Selft Test start address */
55 #define FMSSTOP 0x20200024 /* Flash Built-In Selft Test stop address */
56 #define FMS16 0x20200028 /* Flash 16-bit signature */
57 #define FMSW0 0x2020002C /* Flash 128-bit signature Word 0 */
58 #define FMSW1 0x20200030 /* Flash 128-bit signature Word 1 */
59 #define FMSW2 0x20200034 /* Flash 128-bit signature Word 2 */
60 #define FMSW3 0x20200038 /* Flash 128-bit signature Word 3 */
62 #define EECMD 0x20200080 /* EEPROM command */
63 #define EEADDR 0x20200084 /* EEPROM address */
64 #define EEWDATA 0x20200088 /* EEPROM write data */
65 #define EERDATA 0x2020008C /* EEPROM read data */
66 #define EEWSTATE 0x20200090 /* EEPROM wait state */
67 #define EECLKDIV 0x20200094 /* EEPROM clock divider */
68 #define EEPWRDWN 0x20200098 /* EEPROM power-down/start */
69 #define EEMSSTART 0x2020009C /* EEPROM BIST start address */
70 #define EEMSSTOP 0x202000A0 /* EEPROM BIST stop address */
71 #define EEMSSIG 0x202000A4 /* EEPROM 24-bit BIST signature */
73 #define INT_CLR_ENABLE 0x20200FD8 /* Flash/EEPROM interrupt clear enable */
74 #define INT_SET_ENABLE 0x20200FDC /* Flash/EEPROM interrupt set enable */
75 #define INT_STATUS 0x20200FE0 /* Flash/EEPROM interrupt status */
76 #define INT_ENABLE 0x20200FE4 /* Flash/EEPROM interrupt enable */
77 #define INT_CLR_STATUS 0x20200FE8 /* Flash/EEPROM interrupt clear status */
78 #define INT_SET_STATUS 0x20200FEC /* Flash/EEPROM interrupt set status */
80 /* Interrupt sources */
81 #define INTSRC_END_OF_PROG (1 << 28)
82 #define INTSRC_END_OF_BIST (1 << 27)
83 #define INTSRC_END_OF_RDWR (1 << 26)
84 #define INTSRC_END_OF_MISR (1 << 2)
85 #define INTSRC_END_OF_BURN (1 << 1)
86 #define INTSRC_END_OF_ERASE (1 << 0)
89 #define FCTR_FS_LOADREQ (1 << 15)
90 #define FCTR_FS_CACHECLR (1 << 14)
91 #define FCTR_FS_CACHEBYP (1 << 13)
92 #define FCTR_FS_PROGREQ (1 << 12)
93 #define FCTR_FS_RLS (1 << 11)
94 #define FCTR_FS_PDL (1 << 10)
95 #define FCTR_FS_PD (1 << 9)
96 #define FCTR_FS_WPB (1 << 7)
97 #define FCTR_FS_ISS (1 << 6)
98 #define FCTR_FS_RLD (1 << 5)
99 #define FCTR_FS_DCR (1 << 4)
100 #define FCTR_FS_WEB (1 << 2)
101 #define FCTR_FS_WRE (1 << 1)
102 #define FCTR_FS_CS (1 << 0)
104 #define FPTR_EN_T (1 << 15)
106 #define FTCTR_FS_BYPASS_R (1 << 29)
107 #define FTCTR_FS_BYPASS_W (1 << 28)
109 #define FMSSTOP_MISR_START (1 << 17)
111 #define EEMSSTOP_STRTBIST (1 << 31)
114 #define ISS_CUSTOMER_START1 (0x830)
115 #define ISS_CUSTOMER_END1 (0xA00)
116 #define ISS_CUSTOMER_SIZE1 (ISS_CUSTOMER_END1 - ISS_CUSTOMER_START1)
117 #define ISS_CUSTOMER_NWORDS1 (ISS_CUSTOMER_SIZE1 / 4)
118 #define ISS_CUSTOMER_START2 (0xA40)
119 #define ISS_CUSTOMER_END2 (0xC00)
120 #define ISS_CUSTOMER_SIZE2 (ISS_CUSTOMER_END2 - ISS_CUSTOMER_START2)
121 #define ISS_CUSTOMER_NWORDS2 (ISS_CUSTOMER_SIZE2 / 4)
122 #define ISS_CUSTOMER_SIZE (ISS_CUSTOMER_SIZE1 + ISS_CUSTOMER_SIZE2)
125 * Private data for \c lpc2900 flash driver.
127 struct lpc2900_flash_bank
{
129 * This flag is set when the device has been successfully probed.
134 * Holds the value read from CHIPID register.
135 * The driver will not load if the chipid doesn't match the expected
136 * value of 0x209CE02B of the LPC2900 family. A probe will only be done
137 * if the chipid does not yet contain the expected value.
142 * String holding device name.
143 * This string is set by the probe function to the type number of the
144 * device. It takes the form "LPC29xx".
149 * System clock frequency.
150 * Holds the clock frequency in Hz, as passed by the configuration file
151 * to the <tt>flash bank</tt> command.
153 uint32_t clk_sys_fmc
;
156 * Flag to indicate that dangerous operations are possible.
157 * This flag can be set by passing the correct password to the
158 * <tt>lpc2900 password</tt> command. If set, other dangerous commands,
159 * which operate on the index sector, can be executed.
164 * Maximum contiguous block of internal SRAM (bytes).
165 * Autodetected by the driver. Not the total amount of SRAM, only the
166 * the largest \em contiguous block!
168 uint32_t max_ram_block
;
172 static uint32_t lpc2900_wait_status(struct flash_bank
*bank
, uint32_t mask
, int timeout
);
173 static void lpc2900_setup(struct flash_bank
*bank
);
174 static uint32_t lpc2900_is_ready(struct flash_bank
*bank
);
175 static uint32_t lpc2900_read_security_status(struct flash_bank
*bank
);
176 static uint32_t lpc2900_run_bist128(struct flash_bank
*bank
,
177 uint32_t addr_from
, uint32_t addr_to
,
178 uint32_t signature
[4]);
179 static uint32_t lpc2900_address2sector(struct flash_bank
*bank
, uint32_t offset
);
180 static uint32_t lpc2900_calc_tr(uint32_t clock_var
, uint32_t time_var
);
182 /*********************** Helper functions **************************/
185 * Wait for an event in mask to occur in INT_STATUS.
187 * Return when an event occurs, or after a timeout.
189 * @param[in] bank Pointer to the flash bank descriptor
190 * @param[in] mask Mask to be used for INT_STATUS
191 * @param[in] timeout Timeout in ms
193 static uint32_t lpc2900_wait_status(struct flash_bank
*bank
,
198 struct target
*target
= bank
->target
;
203 target_read_u32(target
, INT_STATUS
, &int_status
);
204 } while (((int_status
& mask
) == 0) && (timeout
!= 0));
207 LOG_DEBUG("Timeout!");
208 return ERROR_FLASH_OPERATION_FAILED
;
215 * Set up the flash for erase/program operations.
217 * Enable the flash, and set the correct CRA clock of 66 kHz.
219 * @param bank Pointer to the flash bank descriptor
221 static void lpc2900_setup(struct flash_bank
*bank
)
224 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
226 /* Power up the flash block */
227 target_write_u32(bank
->target
, FCTR
, FCTR_FS_WEB
| FCTR_FS_CS
);
229 fcra
= (lpc2900_info
->clk_sys_fmc
/ (3 * 66000)) - 1;
230 target_write_u32(bank
->target
, FCRA
, fcra
);
234 * Check if device is ready.
236 * Check if device is ready for flash operation:
237 * Must have been successfully probed.
240 static uint32_t lpc2900_is_ready(struct flash_bank
*bank
)
242 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
244 if (!lpc2900_info
->is_probed
)
245 return ERROR_FLASH_BANK_NOT_PROBED
;
247 if (bank
->target
->state
!= TARGET_HALTED
) {
248 LOG_ERROR("Target not halted");
249 return ERROR_TARGET_NOT_HALTED
;
256 * Read the status of sector security from the index sector.
258 * @param bank Pointer to the flash bank descriptor
260 static uint32_t lpc2900_read_security_status(struct flash_bank
*bank
)
262 uint32_t status
= lpc2900_is_ready(bank
);
263 if (status
!= ERROR_OK
)
266 struct target
*target
= bank
->target
;
268 /* Enable ISS access */
269 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
| FCTR_FS_ISS
);
271 /* Read the relevant block of memory from the ISS sector */
272 uint32_t iss_secured_field
[0x230/16][4];
273 target_read_memory(target
, bank
->base
+ 0xC00, 4, 0x230/4,
274 (uint8_t *)iss_secured_field
);
276 /* Disable ISS access */
277 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
);
279 /* Check status of each sector. Note that the sector numbering in the LPC2900
280 * is different from the logical sector numbers used in OpenOCD!
281 * Refer to the user manual for details.
283 * All zeros (16x 0x00) are treated as a secured sector (is_protected = 1)
284 * All ones (16x 0xFF) are treated as a non-secured sector (is_protected = 0)
285 * Anything else is undefined (is_protected = -1). This is treated as
286 * a protected sector!
290 for (sector
= 0; sector
< bank
->num_sectors
; sector
++) {
291 /* Convert logical sector number to physical sector number */
293 index_t
= sector
+ 11;
294 else if (sector
<= 7)
295 index_t
= sector
+ 27;
297 index_t
= sector
- 8;
299 bank
->sectors
[sector
].is_protected
= -1;
301 if ((iss_secured_field
[index_t
][0] == 0x00000000) &&
302 (iss_secured_field
[index_t
][1] == 0x00000000) &&
303 (iss_secured_field
[index_t
][2] == 0x00000000) &&
304 (iss_secured_field
[index_t
][3] == 0x00000000))
305 bank
->sectors
[sector
].is_protected
= 1;
307 if ((iss_secured_field
[index_t
][0] == 0xFFFFFFFF) &&
308 (iss_secured_field
[index_t
][1] == 0xFFFFFFFF) &&
309 (iss_secured_field
[index_t
][2] == 0xFFFFFFFF) &&
310 (iss_secured_field
[index_t
][3] == 0xFFFFFFFF))
311 bank
->sectors
[sector
].is_protected
= 0;
318 * Use BIST to calculate a 128-bit hash value over a range of flash.
320 * @param bank Pointer to the flash bank descriptor
325 static uint32_t lpc2900_run_bist128(struct flash_bank
*bank
,
328 uint32_t signature
[4])
330 struct target
*target
= bank
->target
;
332 /* Clear END_OF_MISR interrupt status */
333 target_write_u32(target
, INT_CLR_STATUS
, INTSRC_END_OF_MISR
);
336 target_write_u32(target
, FMSSTART
, addr_from
>> 4);
337 /* End address, and issue start command */
338 target_write_u32(target
, FMSSTOP
, (addr_to
>> 4) | FMSSTOP_MISR_START
);
340 /* Poll for end of operation. Calculate a reasonable timeout. */
341 if (lpc2900_wait_status(bank
, INTSRC_END_OF_MISR
, 1000) != ERROR_OK
)
342 return ERROR_FLASH_OPERATION_FAILED
;
344 /* Return the signature */
345 uint8_t sig_buf
[4 * 4];
346 target_read_memory(target
, FMSW0
, 4, 4, sig_buf
);
347 target_buffer_get_u32_array(target
, sig_buf
, 4, signature
);
353 * Return sector number for given address.
355 * Return the (logical) sector number for a given relative address.
356 * No sanity check is done. It assumed that the address is valid.
358 * @param bank Pointer to the flash bank descriptor
359 * @param offset Offset address relative to bank start
361 static uint32_t lpc2900_address2sector(struct flash_bank
*bank
,
364 uint32_t address
= bank
->base
+ offset
;
366 /* Run through all sectors of this bank */
368 for (sector
= 0; sector
< bank
->num_sectors
; sector
++) {
369 /* Return immediately if address is within the current sector */
370 if (address
< (bank
->sectors
[sector
].offset
+ bank
->sectors
[sector
].size
))
374 /* We should never come here. If we do, return an arbitrary sector number. */
379 * Write one page to the index sector.
381 * @param bank Pointer to the flash bank descriptor
382 * @param pagenum Page number (0...7)
383 * @param page Page array (FLASH_PAGE_SIZE bytes)
385 static int lpc2900_write_index_page(struct flash_bank
*bank
,
387 uint8_t page
[FLASH_PAGE_SIZE
])
389 /* Only pages 4...7 are user writable */
390 if ((pagenum
< 4) || (pagenum
> 7)) {
391 LOG_ERROR("Refuse to burn index sector page %d", pagenum
);
392 return ERROR_COMMAND_ARGUMENT_INVALID
;
395 /* Get target, and check if it's halted */
396 struct target
*target
= bank
->target
;
397 if (target
->state
!= TARGET_HALTED
) {
398 LOG_ERROR("Target not halted");
399 return ERROR_TARGET_NOT_HALTED
;
403 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
405 /* Enable flash block and set the correct CRA clock of 66 kHz */
408 /* Un-protect the index sector */
409 target_write_u32(target
, bank
->base
, 0);
410 target_write_u32(target
, FCTR
,
411 FCTR_FS_LOADREQ
| FCTR_FS_WPB
| FCTR_FS_ISS
|
412 FCTR_FS_WEB
| FCTR_FS_WRE
| FCTR_FS_CS
);
414 /* Set latch load mode */
415 target_write_u32(target
, FCTR
,
416 FCTR_FS_ISS
| FCTR_FS_WEB
| FCTR_FS_WRE
| FCTR_FS_CS
);
418 /* Write whole page to flash data latches */
419 if (target_write_memory(target
,
420 bank
->base
+ pagenum
* FLASH_PAGE_SIZE
,
421 4, FLASH_PAGE_SIZE
/ 4, page
) != ERROR_OK
) {
422 LOG_ERROR("Index sector write failed @ page %d", pagenum
);
423 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
);
425 return ERROR_FLASH_OPERATION_FAILED
;
428 /* Clear END_OF_BURN interrupt status */
429 target_write_u32(target
, INT_CLR_STATUS
, INTSRC_END_OF_BURN
);
431 /* Set the program/erase time to FLASH_PROGRAM_TIME */
432 target_write_u32(target
, FPTR
,
433 FPTR_EN_T
| lpc2900_calc_tr(lpc2900_info
->clk_sys_fmc
,
434 FLASH_PROGRAM_TIME
));
436 /* Trigger flash write */
437 target_write_u32(target
, FCTR
,
438 FCTR_FS_PROGREQ
| FCTR_FS_ISS
|
439 FCTR_FS_WPB
| FCTR_FS_WRE
| FCTR_FS_CS
);
441 /* Wait for the end of the write operation. If it's not over after one
442 * second, something went dreadfully wrong... :-(
444 if (lpc2900_wait_status(bank
, INTSRC_END_OF_BURN
, 1000) != ERROR_OK
) {
445 LOG_ERROR("Index sector write failed @ page %d", pagenum
);
446 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
);
448 return ERROR_FLASH_OPERATION_FAILED
;
451 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
);
457 * Calculate FPTR.TR register value for desired program/erase time.
459 * @param clock System clock in Hz
460 * @param time Program/erase time in µs
462 static uint32_t lpc2900_calc_tr(uint32_t clock_var
, uint32_t time_var
)
464 /* ((time[µs]/1e6) * f[Hz]) + 511
465 * FPTR.TR = -------------------------------
469 uint32_t tr_val
= (uint32_t)((((time_var
/ 1e6
) * clock_var
) + 511.0) / 512.0);
474 /*********************** Private flash commands **************************/
478 * Command to determine the signature of the whole flash.
480 * Uses the Built-In-Self-Test (BIST) to generate a 128-bit hash value
481 * of the flash content.
483 COMMAND_HANDLER(lpc2900_handle_signature_command
)
486 uint32_t signature
[4];
489 return ERROR_COMMAND_SYNTAX_ERROR
;
491 struct flash_bank
*bank
;
492 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
493 if (ERROR_OK
!= retval
)
496 if (bank
->target
->state
!= TARGET_HALTED
) {
497 LOG_ERROR("Target not halted");
498 return ERROR_TARGET_NOT_HALTED
;
501 /* Run BIST over whole flash range */
502 status
= lpc2900_run_bist128(bank
, bank
->base
, bank
->base
+ (bank
->size
- 1), signature
);
503 if (status
!= ERROR_OK
)
506 command_print(CMD_CTX
, "signature: 0x%8.8" PRIx32
510 signature
[3], signature
[2], signature
[1], signature
[0]);
516 * Store customer info in file.
518 * Read customer info from index sector, and store that block of data into
519 * a disk file. The format is binary.
521 COMMAND_HANDLER(lpc2900_handle_read_custom_command
)
524 return ERROR_COMMAND_SYNTAX_ERROR
;
526 struct flash_bank
*bank
;
527 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
528 if (ERROR_OK
!= retval
)
531 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
532 lpc2900_info
->risky
= 0;
534 /* Get target, and check if it's halted */
535 struct target
*target
= bank
->target
;
536 if (target
->state
!= TARGET_HALTED
) {
537 LOG_ERROR("Target not halted");
538 return ERROR_TARGET_NOT_HALTED
;
541 /* Storage for customer info. Read in two parts */
542 uint8_t customer
[4 * (ISS_CUSTOMER_NWORDS1
+ ISS_CUSTOMER_NWORDS2
)];
544 /* Enable access to index sector */
545 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
| FCTR_FS_ISS
);
548 target_read_memory(target
, bank
->base
+ISS_CUSTOMER_START1
, 4,
549 ISS_CUSTOMER_NWORDS1
,
551 target_read_memory(target
, bank
->base
+ISS_CUSTOMER_START2
, 4,
552 ISS_CUSTOMER_NWORDS2
,
553 &customer
[4 * ISS_CUSTOMER_NWORDS1
]);
555 /* Deactivate access to index sector */
556 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
);
558 /* Try and open the file */
559 struct fileio fileio
;
560 const char *filename
= CMD_ARGV
[1];
561 int ret
= fileio_open(&fileio
, filename
, FILEIO_WRITE
, FILEIO_BINARY
);
562 if (ret
!= ERROR_OK
) {
563 LOG_WARNING("Could not open file %s", filename
);
568 ret
= fileio_write(&fileio
, sizeof(customer
), customer
, &nwritten
);
569 if (ret
!= ERROR_OK
) {
570 LOG_ERROR("Write operation to file %s failed", filename
);
571 fileio_close(&fileio
);
575 fileio_close(&fileio
);
581 * Enter password to enable potentially dangerous options.
583 COMMAND_HANDLER(lpc2900_handle_password_command
)
586 return ERROR_COMMAND_SYNTAX_ERROR
;
588 struct flash_bank
*bank
;
589 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
590 if (ERROR_OK
!= retval
)
593 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
595 #define ISS_PASSWORD "I_know_what_I_am_doing"
597 lpc2900_info
->risky
= !strcmp(CMD_ARGV
[1], ISS_PASSWORD
);
599 if (!lpc2900_info
->risky
) {
600 command_print(CMD_CTX
, "Wrong password (use '%s')", ISS_PASSWORD
);
601 return ERROR_COMMAND_ARGUMENT_INVALID
;
604 command_print(CMD_CTX
,
605 "Potentially dangerous operation allowed in next command!");
611 * Write customer info from file to the index sector.
613 COMMAND_HANDLER(lpc2900_handle_write_custom_command
)
616 return ERROR_COMMAND_SYNTAX_ERROR
;
618 struct flash_bank
*bank
;
619 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
620 if (ERROR_OK
!= retval
)
623 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
625 /* Check if command execution is allowed. */
626 if (!lpc2900_info
->risky
) {
627 command_print(CMD_CTX
, "Command execution not allowed!");
628 return ERROR_COMMAND_ARGUMENT_INVALID
;
630 lpc2900_info
->risky
= 0;
632 /* Get target, and check if it's halted */
633 struct target
*target
= bank
->target
;
634 if (target
->state
!= TARGET_HALTED
) {
635 LOG_ERROR("Target not halted");
636 return ERROR_TARGET_NOT_HALTED
;
639 /* The image will always start at offset 0 */
641 image
.base_address_set
= 1;
642 image
.base_address
= 0;
643 image
.start_address_set
= 0;
645 const char *filename
= CMD_ARGV
[1];
646 const char *type
= (CMD_ARGC
>= 3) ? CMD_ARGV
[2] : NULL
;
647 retval
= image_open(&image
, filename
, type
);
648 if (retval
!= ERROR_OK
)
651 /* Do a sanity check: The image must be exactly the size of the customer
652 programmable area. Any other size is rejected. */
653 if (image
.num_sections
!= 1) {
654 LOG_ERROR("Only one section allowed in image file.");
655 return ERROR_COMMAND_SYNTAX_ERROR
;
657 if ((image
.sections
[0].base_address
!= 0) ||
658 (image
.sections
[0].size
!= ISS_CUSTOMER_SIZE
)) {
659 LOG_ERROR("Incorrect image file size. Expected %d, "
661 ISS_CUSTOMER_SIZE
, image
.sections
[0].size
);
662 return ERROR_COMMAND_SYNTAX_ERROR
;
665 /* Well boys, I reckon this is it... */
667 /* Customer info is split into two blocks in pages 4 and 5. */
668 uint8_t page
[FLASH_PAGE_SIZE
];
671 uint32_t offset
= ISS_CUSTOMER_START1
% FLASH_PAGE_SIZE
;
672 memset(page
, 0xff, FLASH_PAGE_SIZE
);
674 retval
= image_read_section(&image
, 0, 0,
675 ISS_CUSTOMER_SIZE1
, &page
[offset
], &size_read
);
676 if (retval
!= ERROR_OK
) {
677 LOG_ERROR("couldn't read from file '%s'", filename
);
681 retval
= lpc2900_write_index_page(bank
, 4, page
);
682 if (retval
!= ERROR_OK
) {
688 offset
= ISS_CUSTOMER_START2
% FLASH_PAGE_SIZE
;
689 memset(page
, 0xff, FLASH_PAGE_SIZE
);
690 retval
= image_read_section(&image
, 0, ISS_CUSTOMER_SIZE1
,
691 ISS_CUSTOMER_SIZE2
, &page
[offset
], &size_read
);
692 if (retval
!= ERROR_OK
) {
693 LOG_ERROR("couldn't read from file '%s'", filename
);
697 retval
= lpc2900_write_index_page(bank
, 5, page
);
698 if (retval
!= ERROR_OK
) {
709 * Activate 'sector security' for a range of sectors.
711 COMMAND_HANDLER(lpc2900_handle_secure_sector_command
)
714 return ERROR_COMMAND_SYNTAX_ERROR
;
716 /* Get the bank descriptor */
717 struct flash_bank
*bank
;
718 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
719 if (ERROR_OK
!= retval
)
722 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
724 /* Check if command execution is allowed. */
725 if (!lpc2900_info
->risky
) {
726 command_print(CMD_CTX
, "Command execution not allowed! "
727 "(use 'password' command first)");
728 return ERROR_COMMAND_ARGUMENT_INVALID
;
730 lpc2900_info
->risky
= 0;
732 /* Read sector range, and do a sanity check. */
734 COMMAND_PARSE_NUMBER(int, CMD_ARGV
[1], first
);
735 COMMAND_PARSE_NUMBER(int, CMD_ARGV
[2], last
);
736 if ((first
>= bank
->num_sectors
) ||
737 (last
>= bank
->num_sectors
) ||
739 command_print(CMD_CTX
, "Illegal sector range");
740 return ERROR_COMMAND_ARGUMENT_INVALID
;
743 uint8_t page
[FLASH_PAGE_SIZE
];
746 /* Sectors in page 6 */
747 if ((first
<= 4) || (last
>= 8)) {
748 memset(&page
, 0xff, FLASH_PAGE_SIZE
);
749 for (sector
= first
; sector
<= last
; sector
++) {
751 memset(&page
[0xB0 + 16*sector
], 0, 16);
752 else if (sector
>= 8)
753 memset(&page
[0x00 + 16*(sector
- 8)], 0, 16);
756 retval
= lpc2900_write_index_page(bank
, 6, page
);
757 if (retval
!= ERROR_OK
) {
758 LOG_ERROR("failed to update index sector page 6");
763 /* Sectors in page 7 */
764 if ((first
<= 7) && (last
>= 5)) {
765 memset(&page
, 0xff, FLASH_PAGE_SIZE
);
766 for (sector
= first
; sector
<= last
; sector
++) {
767 if ((sector
>= 5) && (sector
<= 7))
768 memset(&page
[0x00 + 16*(sector
- 5)], 0, 16);
771 retval
= lpc2900_write_index_page(bank
, 7, page
);
772 if (retval
!= ERROR_OK
) {
773 LOG_ERROR("failed to update index sector page 7");
778 command_print(CMD_CTX
,
779 "Sectors security will become effective after next power cycle");
781 /* Update the sector security status */
782 if (lpc2900_read_security_status(bank
) != ERROR_OK
) {
783 LOG_ERROR("Cannot determine sector security status");
784 return ERROR_FLASH_OPERATION_FAILED
;
791 * Activate JTAG protection.
793 COMMAND_HANDLER(lpc2900_handle_secure_jtag_command
)
796 return ERROR_COMMAND_SYNTAX_ERROR
;
798 /* Get the bank descriptor */
799 struct flash_bank
*bank
;
800 int retval
= CALL_COMMAND_HANDLER(flash_command_get_bank
, 0, &bank
);
801 if (ERROR_OK
!= retval
)
804 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
806 /* Check if command execution is allowed. */
807 if (!lpc2900_info
->risky
) {
808 command_print(CMD_CTX
, "Command execution not allowed! "
809 "(use 'password' command first)");
810 return ERROR_COMMAND_ARGUMENT_INVALID
;
812 lpc2900_info
->risky
= 0;
815 uint8_t page
[FLASH_PAGE_SIZE
];
816 memset(&page
, 0xff, FLASH_PAGE_SIZE
);
819 /* Insert "soft" protection word */
820 page
[0x30 + 15] = 0x7F;
821 page
[0x30 + 11] = 0x7F;
822 page
[0x30 + 7] = 0x7F;
823 page
[0x30 + 3] = 0x7F;
825 /* Write to page 5 */
826 retval
= lpc2900_write_index_page(bank
, 5, page
);
827 if (retval
!= ERROR_OK
) {
828 LOG_ERROR("failed to update index sector page 5");
832 LOG_INFO("JTAG security set. Good bye!");
837 /*********************** Flash interface functions **************************/
839 static const struct command_registration lpc2900_exec_command_handlers
[] = {
843 .handler
= lpc2900_handle_signature_command
,
844 .mode
= COMMAND_EXEC
,
845 .help
= "Calculate and display signature of flash bank.",
848 .name
= "read_custom",
849 .handler
= lpc2900_handle_read_custom_command
,
850 .mode
= COMMAND_EXEC
,
851 .usage
= "bank_id filename",
852 .help
= "Copies 912 bytes of customer information "
853 "from index sector into file.",
857 .handler
= lpc2900_handle_password_command
,
858 .mode
= COMMAND_EXEC
,
859 .usage
= "bank_id password",
860 .help
= "Enter fixed password to enable 'dangerous' options.",
863 .name
= "write_custom",
864 .handler
= lpc2900_handle_write_custom_command
,
865 .mode
= COMMAND_EXEC
,
866 .usage
= "bank_id filename ('bin'|'ihex'|'elf'|'s19')",
867 .help
= "Copies 912 bytes of customer info from file "
871 .name
= "secure_sector",
872 .handler
= lpc2900_handle_secure_sector_command
,
873 .mode
= COMMAND_EXEC
,
874 .usage
= "bank_id first_sector last_sector",
875 .help
= "Activate sector security for a range of sectors. "
876 "It will be effective after a power cycle.",
879 .name
= "secure_jtag",
880 .handler
= lpc2900_handle_secure_jtag_command
,
881 .mode
= COMMAND_EXEC
,
883 .help
= "Disable the JTAG port. "
884 "It will be effective after a power cycle.",
886 COMMAND_REGISTRATION_DONE
889 static const struct command_registration lpc2900_command_handlers
[] = {
893 .help
= "LPC2900 flash command group",
895 .chain
= lpc2900_exec_command_handlers
,
897 COMMAND_REGISTRATION_DONE
900 /** Evaluate flash bank command. */
901 FLASH_BANK_COMMAND_HANDLER(lpc2900_flash_bank_command
)
903 struct lpc2900_flash_bank
*lpc2900_info
;
906 return ERROR_COMMAND_SYNTAX_ERROR
;
908 lpc2900_info
= malloc(sizeof(struct lpc2900_flash_bank
));
909 bank
->driver_priv
= lpc2900_info
;
912 * Reject it if we can't meet the requirements for program time
913 * (if clock too slow), or for erase time (clock too fast).
915 uint32_t clk_sys_fmc
;
916 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[6], clk_sys_fmc
);
917 lpc2900_info
->clk_sys_fmc
= clk_sys_fmc
* 1000;
919 uint32_t clock_limit
;
920 /* Check program time limit */
921 clock_limit
= 512000000l / FLASH_PROGRAM_TIME
;
922 if (lpc2900_info
->clk_sys_fmc
< clock_limit
) {
923 LOG_WARNING("flash clock must be at least %" PRIu32
" kHz",
924 (clock_limit
/ 1000));
925 return ERROR_FLASH_BANK_INVALID
;
928 /* Check erase time limit */
929 clock_limit
= (uint32_t)((32767.0 * 512.0 * 1e6
) / FLASH_ERASE_TIME
);
930 if (lpc2900_info
->clk_sys_fmc
> clock_limit
) {
931 LOG_WARNING("flash clock must be a maximum of %" PRIu32
" kHz",
932 (clock_limit
/ 1000));
933 return ERROR_FLASH_BANK_INVALID
;
936 /* Chip ID will be obtained by probing the device later */
937 lpc2900_info
->chipid
= 0;
938 lpc2900_info
->is_probed
= false;
946 * @param bank Pointer to the flash bank descriptor
947 * @param first First sector to be erased
948 * @param last Last sector (including) to be erased
950 static int lpc2900_erase(struct flash_bank
*bank
, int first
, int last
)
954 int last_unsecured_sector
;
955 struct target
*target
= bank
->target
;
956 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
959 status
= lpc2900_is_ready(bank
);
960 if (status
!= ERROR_OK
)
963 /* Sanity check on sector range */
964 if ((first
< 0) || (last
< first
) || (last
>= bank
->num_sectors
)) {
965 LOG_INFO("Bad sector range");
966 return ERROR_FLASH_SECTOR_INVALID
;
969 /* Update the info about secured sectors */
970 lpc2900_read_security_status(bank
);
972 /* The selected sector range might include secured sectors. An attempt
973 * to erase such a sector will cause the erase to fail also for unsecured
974 * sectors. It is necessary to determine the last unsecured sector now,
975 * because we have to treat the last relevant sector in the list in
978 last_unsecured_sector
= -1;
979 for (sector
= first
; sector
<= last
; sector
++) {
980 if (!bank
->sectors
[sector
].is_protected
)
981 last_unsecured_sector
= sector
;
984 /* Exit now, in case of the rare constellation where all sectors in range
985 * are secured. This is regarded a success, since erasing/programming of
986 * secured sectors shall be handled transparently.
988 if (last_unsecured_sector
== -1)
991 /* Enable flash block and set the correct CRA clock of 66 kHz */
994 /* Clear END_OF_ERASE interrupt status */
995 target_write_u32(target
, INT_CLR_STATUS
, INTSRC_END_OF_ERASE
);
997 /* Set the program/erase timer to FLASH_ERASE_TIME */
998 target_write_u32(target
, FPTR
,
999 FPTR_EN_T
| lpc2900_calc_tr(lpc2900_info
->clk_sys_fmc
,
1002 /* Sectors are marked for erasure, then erased all together */
1003 for (sector
= first
; sector
<= last_unsecured_sector
; sector
++) {
1004 /* Only mark sectors that aren't secured. Any attempt to erase a group
1005 * of sectors will fail if any single one of them is secured!
1007 if (!bank
->sectors
[sector
].is_protected
) {
1008 /* Unprotect the sector */
1009 target_write_u32(target
, bank
->sectors
[sector
].offset
, 0);
1010 target_write_u32(target
, FCTR
,
1011 FCTR_FS_LOADREQ
| FCTR_FS_WPB
|
1012 FCTR_FS_WEB
| FCTR_FS_WRE
| FCTR_FS_CS
);
1014 /* Mark the sector for erasure. The last sector in the list
1015 triggers the erasure. */
1016 target_write_u32(target
, bank
->sectors
[sector
].offset
, 0);
1017 if (sector
== last_unsecured_sector
) {
1018 target_write_u32(target
, FCTR
,
1019 FCTR_FS_PROGREQ
| FCTR_FS_WPB
| FCTR_FS_CS
);
1021 target_write_u32(target
, FCTR
,
1022 FCTR_FS_LOADREQ
| FCTR_FS_WPB
|
1023 FCTR_FS_WEB
| FCTR_FS_CS
);
1028 /* Wait for the end of the erase operation. If it's not over after two seconds,
1029 * something went dreadfully wrong... :-(
1031 if (lpc2900_wait_status(bank
, INTSRC_END_OF_ERASE
, 2000) != ERROR_OK
)
1032 return ERROR_FLASH_OPERATION_FAILED
;
1034 /* Normal flash operating mode */
1035 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
);
1040 static int lpc2900_protect(struct flash_bank
*bank
, int set
, int first
, int last
)
1042 /* This command is not supported.
1043 * "Protection" in LPC2900 terms is handled transparently. Sectors will
1044 * automatically be unprotected as needed.
1045 * Instead we use the concept of sector security. A secured sector is shown
1046 * as "protected" in OpenOCD. Sector security is a permanent feature, and
1047 * cannot be disabled once activated.
1054 * Write data to flash.
1056 * @param bank Pointer to the flash bank descriptor
1057 * @param buffer Buffer with data
1058 * @param offset Start address (relative to bank start)
1059 * @param count Number of bytes to be programmed
1061 static int lpc2900_write(struct flash_bank
*bank
, const uint8_t *buffer
,
1062 uint32_t offset
, uint32_t count
)
1064 uint8_t page
[FLASH_PAGE_SIZE
];
1067 struct target
*target
= bank
->target
;
1068 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
1072 static const uint32_t write_target_code
[] = {
1073 /* Set auto latch mode: FCTR=CS|WRE|WEB */
1074 0xe3a0a007, /* loop mov r10, #0x007 */
1075 0xe583a000, /* str r10,[r3,#0] */
1077 /* Load complete page into latches */
1078 0xe3a06020, /* mov r6,#(512/16) */
1079 0xe8b00f00, /* next ldmia r0!,{r8-r11} */
1080 0xe8a10f00, /* stmia r1!,{r8-r11} */
1081 0xe2566001, /* subs r6,#1 */
1082 0x1afffffb, /* bne next */
1084 /* Clear END_OF_BURN interrupt status */
1085 0xe3a0a002, /* mov r10,#(1 << 1) */
1086 0xe583afe8, /* str r10,[r3,#0xfe8] */
1088 /* Set the erase time to FLASH_PROGRAM_TIME */
1089 0xe5834008, /* str r4,[r3,#8] */
1091 /* Trigger flash write
1092 * FCTR = CS | WRE | WPB | PROGREQ */
1093 0xe3a0a083, /* mov r10,#0x83 */
1094 0xe38aaa01, /* orr r10,#0x1000 */
1095 0xe583a000, /* str r10,[r3,#0] */
1097 /* Wait for end of burn */
1098 0xe593afe0, /* wait ldr r10,[r3,#0xfe0] */
1099 0xe21aa002, /* ands r10,#(1 << 1) */
1100 0x0afffffc, /* beq wait */
1103 0xe2522001, /* subs r2,#1 */
1104 0x1affffed, /* bne loop */
1106 0xeafffffe /* done b done */
1110 status
= lpc2900_is_ready(bank
);
1111 if (status
!= ERROR_OK
)
1114 /* Enable flash block and set the correct CRA clock of 66 kHz */
1115 lpc2900_setup(bank
);
1117 /* Update the info about secured sectors */
1118 lpc2900_read_security_status(bank
);
1120 /* Unprotect all involved sectors */
1121 for (sector
= 0; sector
< bank
->num_sectors
; sector
++) {
1122 /* Start address in or before this sector?
1123 * End address in or behind this sector? */
1124 if (((bank
->base
+ offset
) <
1125 (bank
->sectors
[sector
].offset
+ bank
->sectors
[sector
].size
)) &&
1126 ((bank
->base
+ (offset
+ count
- 1)) >= bank
->sectors
[sector
].offset
)) {
1127 /* This sector is involved and needs to be unprotected.
1128 * Don't do it for secured sectors.
1130 if (!bank
->sectors
[sector
].is_protected
) {
1131 target_write_u32(target
, bank
->sectors
[sector
].offset
, 0);
1132 target_write_u32(target
, FCTR
,
1133 FCTR_FS_LOADREQ
| FCTR_FS_WPB
|
1134 FCTR_FS_WEB
| FCTR_FS_WRE
| FCTR_FS_CS
);
1139 /* Set the program/erase time to FLASH_PROGRAM_TIME */
1140 uint32_t prog_time
= FPTR_EN_T
| lpc2900_calc_tr(lpc2900_info
->clk_sys_fmc
, FLASH_PROGRAM_TIME
);
1142 /* If there is a working area of reasonable size, use it to program via
1143 * a target algorithm. If not, fall back to host programming. */
1145 /* We need some room for target code. */
1146 const uint32_t target_code_size
= sizeof(write_target_code
);
1148 /* Try working area allocation. Start with a large buffer, and try with
1149 * reduced size if that fails. */
1150 struct working_area
*warea
;
1151 uint32_t buffer_size
= lpc2900_info
->max_ram_block
- 1 * KiB
;
1152 while ((retval
= target_alloc_working_area_try(target
,
1153 buffer_size
+ target_code_size
,
1154 &warea
)) != ERROR_OK
) {
1155 /* Try a smaller buffer now, and stop if it's too small. */
1156 buffer_size
-= 1 * KiB
;
1157 if (buffer_size
< 2 * KiB
) {
1158 LOG_INFO("no (large enough) working area, falling back to host mode");
1166 struct reg_param reg_params
[5];
1167 struct arm_algorithm arm_algo
;
1169 /* We can use target mode. Download the algorithm. */
1170 uint8_t code
[sizeof(write_target_code
)];
1171 target_buffer_set_u32_array(target
, code
, ARRAY_SIZE(write_target_code
),
1173 retval
= target_write_buffer(target
, (warea
->address
) + buffer_size
, sizeof(code
), code
);
1174 if (retval
!= ERROR_OK
) {
1175 LOG_ERROR("Unable to write block write code to target");
1176 target_free_all_working_areas(target
);
1177 return ERROR_FLASH_OPERATION_FAILED
;
1180 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
1181 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
1182 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
);
1183 init_reg_param(®_params
[3], "r3", 32, PARAM_OUT
);
1184 init_reg_param(®_params
[4], "r4", 32, PARAM_OUT
);
1186 /* Write to flash in large blocks */
1187 while (count
!= 0) {
1188 uint32_t this_npages
;
1189 const uint8_t *this_buffer
;
1190 int start_sector
= lpc2900_address2sector(bank
, offset
);
1192 /* First page / last page / rest */
1193 if (offset
% FLASH_PAGE_SIZE
) {
1194 /* Block doesn't start on page boundary.
1195 * Burn first partial page separately. */
1196 memset(&page
, 0xff, sizeof(page
));
1197 memcpy(&page
[offset
% FLASH_PAGE_SIZE
],
1199 FLASH_PAGE_SIZE
- (offset
% FLASH_PAGE_SIZE
));
1201 this_buffer
= &page
[0];
1202 count
= count
+ (offset
% FLASH_PAGE_SIZE
);
1203 offset
= offset
- (offset
% FLASH_PAGE_SIZE
);
1204 } else if (count
< FLASH_PAGE_SIZE
) {
1205 /* Download last incomplete page separately. */
1206 memset(&page
, 0xff, sizeof(page
));
1207 memcpy(&page
, buffer
, count
);
1209 this_buffer
= &page
[0];
1210 count
= FLASH_PAGE_SIZE
;
1212 /* Download as many full pages as possible */
1213 this_npages
= (count
< buffer_size
) ?
1214 count
/ FLASH_PAGE_SIZE
:
1215 buffer_size
/ FLASH_PAGE_SIZE
;
1216 this_buffer
= buffer
;
1218 /* Make sure we stop at the next secured sector */
1219 sector
= start_sector
+ 1;
1220 while (sector
< bank
->num_sectors
) {
1222 if (bank
->sectors
[sector
].is_protected
) {
1223 /* Is that next sector within the current block? */
1224 if ((bank
->sectors
[sector
].offset
- bank
->base
) <
1225 (offset
+ (this_npages
* FLASH_PAGE_SIZE
))) {
1226 /* Yes! Split the block */
1228 (bank
->sectors
[sector
].offset
-
1229 bank
->base
- offset
)
1239 /* Skip the current sector if it is secured */
1240 if (bank
->sectors
[start_sector
].is_protected
) {
1241 LOG_DEBUG("Skip secured sector %d",
1244 /* Stop if this is the last sector */
1245 if (start_sector
== bank
->num_sectors
- 1)
1249 uint32_t nskip
= bank
->sectors
[start_sector
].size
-
1250 (offset
% bank
->sectors
[start_sector
].size
);
1253 count
= (count
>= nskip
) ? (count
- nskip
) : 0;
1257 /* Execute buffer download */
1258 retval
= target_write_buffer(target
, warea
->address
,
1259 this_npages
* FLASH_PAGE_SIZE
, this_buffer
);
1260 if (retval
!= ERROR_OK
) {
1261 LOG_ERROR("Unable to write data to target");
1262 target_free_all_working_areas(target
);
1263 return ERROR_FLASH_OPERATION_FAILED
;
1266 /* Prepare registers */
1267 buf_set_u32(reg_params
[0].value
, 0, 32, warea
->address
);
1268 buf_set_u32(reg_params
[1].value
, 0, 32, offset
);
1269 buf_set_u32(reg_params
[2].value
, 0, 32, this_npages
);
1270 buf_set_u32(reg_params
[3].value
, 0, 32, FCTR
);
1271 buf_set_u32(reg_params
[4].value
, 0, 32, FPTR_EN_T
| prog_time
);
1273 /* Execute algorithm, assume breakpoint for last instruction */
1274 arm_algo
.common_magic
= ARM_COMMON_MAGIC
;
1275 arm_algo
.core_mode
= ARM_MODE_SVC
;
1276 arm_algo
.core_state
= ARM_STATE_ARM
;
1278 retval
= target_run_algorithm(target
, 0, NULL
, 5, reg_params
,
1279 (warea
->address
) + buffer_size
,
1280 (warea
->address
) + buffer_size
+ target_code_size
- 4,
1281 10000, /* 10s should be enough for max. 16 KiB of data */
1284 if (retval
!= ERROR_OK
) {
1285 LOG_ERROR("Execution of flash algorithm failed.");
1286 target_free_all_working_areas(target
);
1287 retval
= ERROR_FLASH_OPERATION_FAILED
;
1291 count
-= this_npages
* FLASH_PAGE_SIZE
;
1292 buffer
+= this_npages
* FLASH_PAGE_SIZE
;
1293 offset
+= this_npages
* FLASH_PAGE_SIZE
;
1296 /* Free all resources */
1297 destroy_reg_param(®_params
[0]);
1298 destroy_reg_param(®_params
[1]);
1299 destroy_reg_param(®_params
[2]);
1300 destroy_reg_param(®_params
[3]);
1301 destroy_reg_param(®_params
[4]);
1302 target_free_all_working_areas(target
);
1304 /* Write to flash memory page-wise */
1305 while (count
!= 0) {
1306 /* How many bytes do we copy this time? */
1307 num_bytes
= (count
>= FLASH_PAGE_SIZE
) ?
1308 FLASH_PAGE_SIZE
- (offset
% FLASH_PAGE_SIZE
) :
1311 /* Don't do anything with it if the page is in a secured sector. */
1312 if (!bank
->sectors
[lpc2900_address2sector(bank
, offset
)].is_protected
) {
1313 /* Set latch load mode */
1314 target_write_u32(target
, FCTR
,
1315 FCTR_FS_CS
| FCTR_FS_WRE
| FCTR_FS_WEB
);
1317 /* Always clear the buffer (a little overhead, but who cares) */
1318 memset(page
, 0xFF, FLASH_PAGE_SIZE
);
1320 /* Copy them to the buffer */
1321 memcpy(&page
[offset
% FLASH_PAGE_SIZE
],
1322 &buffer
[offset
% FLASH_PAGE_SIZE
],
1325 /* Write whole page to flash data latches */
1326 if (target_write_memory(target
,
1327 bank
->base
+ (offset
- (offset
% FLASH_PAGE_SIZE
)),
1328 4, FLASH_PAGE_SIZE
/ 4, page
) != ERROR_OK
) {
1329 LOG_ERROR("Write failed @ 0x%8.8" PRIx32
, offset
);
1330 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
);
1332 return ERROR_FLASH_OPERATION_FAILED
;
1335 /* Clear END_OF_BURN interrupt status */
1336 target_write_u32(target
, INT_CLR_STATUS
, INTSRC_END_OF_BURN
);
1338 /* Set the programming time */
1339 target_write_u32(target
, FPTR
, FPTR_EN_T
| prog_time
);
1341 /* Trigger flash write */
1342 target_write_u32(target
, FCTR
,
1343 FCTR_FS_CS
| FCTR_FS_WRE
| FCTR_FS_WPB
| FCTR_FS_PROGREQ
);
1345 /* Wait for the end of the write operation. If it's not over
1346 * after one second, something went dreadfully wrong... :-(
1348 if (lpc2900_wait_status(bank
, INTSRC_END_OF_BURN
, 1000) != ERROR_OK
) {
1349 LOG_ERROR("Write failed @ 0x%8.8" PRIx32
, offset
);
1350 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
);
1352 return ERROR_FLASH_OPERATION_FAILED
;
1356 /* Update pointers and counters */
1357 offset
+= num_bytes
;
1358 buffer
+= num_bytes
;
1365 /* Normal flash operating mode */
1366 target_write_u32(target
, FCTR
, FCTR_FS_CS
| FCTR_FS_WEB
);
1372 * Try and identify the device.
1374 * Determine type number and its memory layout.
1376 * @param bank Pointer to the flash bank descriptor
1378 static int lpc2900_probe(struct flash_bank
*bank
)
1380 struct lpc2900_flash_bank
*lpc2900_info
= bank
->driver_priv
;
1381 struct target
*target
= bank
->target
;
1386 if (target
->state
!= TARGET_HALTED
) {
1387 LOG_ERROR("Target not halted");
1388 return ERROR_TARGET_NOT_HALTED
;
1391 /* We want to do this only once. */
1392 if (lpc2900_info
->is_probed
)
1395 /* Probing starts with reading the CHIPID register. We will continue only
1396 * if this identifies as an LPC2900 device.
1398 target_read_u32(target
, CHIPID
, &lpc2900_info
->chipid
);
1400 if (lpc2900_info
->chipid
!= EXPECTED_CHIPID
) {
1401 LOG_WARNING("Device is not an LPC29xx");
1402 return ERROR_FLASH_OPERATION_FAILED
;
1405 /* It's an LPC29xx device. Now read the feature register FEAT0...FEAT3. */
1406 uint32_t feat0
, feat1
, feat2
, feat3
;
1407 target_read_u32(target
, FEAT0
, &feat0
);
1408 target_read_u32(target
, FEAT1
, &feat1
);
1409 target_read_u32(target
, FEAT2
, &feat2
);
1410 target_read_u32(target
, FEAT3
, &feat3
);
1413 bank
->base
= 0x20000000;
1415 /* Determine flash layout from FEAT2 register */
1416 uint32_t num_64k_sectors
= (feat2
>> 16) & 0xFF;
1417 uint32_t num_8k_sectors
= (feat2
>> 0) & 0xFF;
1418 bank
->num_sectors
= num_64k_sectors
+ num_8k_sectors
;
1419 bank
->size
= KiB
* (64 * num_64k_sectors
+ 8 * num_8k_sectors
);
1421 /* Determine maximum contiguous RAM block */
1422 lpc2900_info
->max_ram_block
= 16 * KiB
;
1423 if ((feat1
& 0x30) == 0x30) {
1424 lpc2900_info
->max_ram_block
= 32 * KiB
;
1425 if ((feat1
& 0x0C) == 0x0C)
1426 lpc2900_info
->max_ram_block
= 48 * KiB
;
1429 /* Determine package code and ITCM size */
1430 uint32_t package_code
= feat0
& 0x0F;
1431 uint32_t itcm_code
= (feat1
>> 16) & 0x1F;
1433 /* Determine the exact type number. */
1435 if ((package_code
== 4) && (itcm_code
== 5)) {
1436 /* Old LPC2917 or LPC2919 (non-/01 devices) */
1437 lpc2900_info
->target_name
= (bank
->size
== 768*KiB
) ? "LPC2919" : "LPC2917";
1439 if (package_code
== 2) {
1440 /* 100-pin package */
1441 if (bank
->size
== 128*KiB
)
1442 lpc2900_info
->target_name
= "LPC2921";
1443 else if (bank
->size
== 256*KiB
)
1444 lpc2900_info
->target_name
= "LPC2923";
1445 else if (bank
->size
== 512*KiB
)
1446 lpc2900_info
->target_name
= "LPC2925";
1449 } else if (package_code
== 4) {
1450 /* 144-pin package */
1451 if ((bank
->size
== 256*KiB
) && (feat3
== 0xFFFFFFE9))
1452 lpc2900_info
->target_name
= "LPC2926";
1453 else if ((bank
->size
== 512*KiB
) && (feat3
== 0xFFFFFCF0))
1454 lpc2900_info
->target_name
= "LPC2917/01";
1455 else if ((bank
->size
== 512*KiB
) && (feat3
== 0xFFFFFFF1))
1456 lpc2900_info
->target_name
= "LPC2927";
1457 else if ((bank
->size
== 768*KiB
) && (feat3
== 0xFFFFFCF8))
1458 lpc2900_info
->target_name
= "LPC2919/01";
1459 else if ((bank
->size
== 768*KiB
) && (feat3
== 0xFFFFFFF9))
1460 lpc2900_info
->target_name
= "LPC2929";
1463 } else if (package_code
== 5) {
1464 /* 208-pin package */
1465 lpc2900_info
->target_name
= (bank
->size
== 0) ? "LPC2930" : "LPC2939";
1471 LOG_WARNING("Unknown LPC29xx derivative (FEATx="
1472 "%08" PRIx32
":%08" PRIx32
":%08" PRIx32
":%08" PRIx32
")",
1473 feat0
, feat1
, feat2
, feat3
);
1474 return ERROR_FLASH_OPERATION_FAILED
;
1477 /* Show detected device */
1478 LOG_INFO("Flash bank %d: Device %s, %" PRIu32
1479 " KiB in %d sectors",
1481 lpc2900_info
->target_name
, bank
->size
/ KiB
,
1484 /* Flashless devices cannot be handled */
1485 if (bank
->num_sectors
== 0) {
1486 LOG_WARNING("Flashless device cannot be handled");
1487 return ERROR_FLASH_OPERATION_FAILED
;
1491 * These are logical sector numbers. When doing real flash operations,
1492 * the logical flash number are translated into the physical flash numbers
1495 bank
->sectors
= malloc(sizeof(struct flash_sector
) * bank
->num_sectors
);
1498 for (i
= 0; i
< bank
->num_sectors
; i
++) {
1499 bank
->sectors
[i
].offset
= offset
;
1500 bank
->sectors
[i
].is_erased
= -1;
1501 bank
->sectors
[i
].is_protected
= -1;
1504 bank
->sectors
[i
].size
= 8 * KiB
;
1506 bank
->sectors
[i
].size
= 64 * KiB
;
1508 /* We shouldn't come here. But there might be a new part out there
1509 * that has more than 19 sectors. Politely ask for a fix then.
1511 bank
->sectors
[i
].size
= 0;
1512 LOG_ERROR("Never heard about sector %d", i
);
1515 offset
+= bank
->sectors
[i
].size
;
1518 lpc2900_info
->is_probed
= true;
1520 /* Read sector security status */
1521 if (lpc2900_read_security_status(bank
) != ERROR_OK
) {
1522 LOG_ERROR("Cannot determine sector security status");
1523 return ERROR_FLASH_OPERATION_FAILED
;
1530 * Run a blank check for each sector.
1532 * For speed reasons, the device isn't read word by word.
1533 * A hash value is calculated by the hardware ("BIST") for each sector.
1534 * This value is then compared against the known hash of an empty sector.
1536 * @param bank Pointer to the flash bank descriptor
1538 static int lpc2900_erase_check(struct flash_bank
*bank
)
1540 uint32_t status
= lpc2900_is_ready(bank
);
1541 if (status
!= ERROR_OK
) {
1542 LOG_INFO("Processor not halted/not probed");
1546 /* Use the BIST (Built-In Selft Test) to generate a signature of each flash
1547 * sector. Compare against the expected signature of an empty sector.
1550 for (sector
= 0; sector
< bank
->num_sectors
; sector
++) {
1551 uint32_t signature
[4];
1552 status
= lpc2900_run_bist128(bank
, bank
->sectors
[sector
].offset
,
1553 bank
->sectors
[sector
].offset
+ (bank
->sectors
[sector
].size
- 1), signature
);
1554 if (status
!= ERROR_OK
)
1557 /* The expected signatures for an empty sector are different
1558 * for 8 KiB and 64 KiB sectors.
1560 if (bank
->sectors
[sector
].size
== 8*KiB
) {
1561 bank
->sectors
[sector
].is_erased
=
1562 (signature
[3] == 0x01ABAAAA) &&
1563 (signature
[2] == 0xAAAAAAAA) &&
1564 (signature
[1] == 0xAAAAAAAA) &&
1565 (signature
[0] == 0xAAA00AAA);
1567 if (bank
->sectors
[sector
].size
== 64*KiB
) {
1568 bank
->sectors
[sector
].is_erased
=
1569 (signature
[3] == 0x11801222) &&
1570 (signature
[2] == 0xB88844FF) &&
1571 (signature
[1] == 0x11A22008) &&
1572 (signature
[0] == 0x2B1BFE44);
1580 * Get protection (sector security) status.
1582 * Determine the status of "sector security" for each sector.
1583 * A secured sector is one that can never be erased/programmed again.
1585 * @param bank Pointer to the flash bank descriptor
1587 static int lpc2900_protect_check(struct flash_bank
*bank
)
1589 return lpc2900_read_security_status(bank
);
1592 struct flash_driver lpc2900_flash
= {
1594 .commands
= lpc2900_command_handlers
,
1595 .flash_bank_command
= lpc2900_flash_bank_command
,
1596 .erase
= lpc2900_erase
,
1597 .protect
= lpc2900_protect
,
1598 .write
= lpc2900_write
,
1599 .read
= default_flash_read
,
1600 .probe
= lpc2900_probe
,
1601 .auto_probe
= lpc2900_probe
,
1602 .erase_check
= lpc2900_erase_check
,
1603 .protect_check
= lpc2900_protect_check
,
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