1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.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 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
31 #include "algorithm.h"
32 #include "binarybuffer.h"
37 /* flash programming support for Philips LPC2xxx devices
38 * currently supported devices:
39 * variant 1 (lpc2000_v1):
47 * variant 2 (lpc2000_v2):
55 static int lpc2000_register_commands(struct command_context_s
*cmd_ctx
);
56 static int lpc2000_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
);
57 static int lpc2000_erase(struct flash_bank_s
*bank
, int first
, int last
);
58 static int lpc2000_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
);
59 static int lpc2000_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
);
60 static int lpc2000_probe(struct flash_bank_s
*bank
);
61 static int lpc2000_erase_check(struct flash_bank_s
*bank
);
62 static int lpc2000_protect_check(struct flash_bank_s
*bank
);
63 static int lpc2000_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
);
65 static int lpc2000_handle_part_id_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
67 flash_driver_t lpc2000_flash
=
70 .register_commands
= lpc2000_register_commands
,
71 .flash_bank_command
= lpc2000_flash_bank_command
,
72 .erase
= lpc2000_erase
,
73 .protect
= lpc2000_protect
,
74 .write
= lpc2000_write
,
75 .probe
= lpc2000_probe
,
76 .auto_probe
= lpc2000_probe
,
77 .erase_check
= lpc2000_erase_check
,
78 .protect_check
= lpc2000_protect_check
,
82 static int lpc2000_register_commands(struct command_context_s
*cmd_ctx
)
84 command_t
*lpc2000_cmd
= register_command(cmd_ctx
, NULL
, "lpc2000", NULL
, COMMAND_ANY
, NULL
);
86 register_command(cmd_ctx
, lpc2000_cmd
, "part_id", lpc2000_handle_part_id_command
, COMMAND_EXEC
,
87 "print part id of lpc2000 flash bank <num>");
92 static int lpc2000_build_sector_list(struct flash_bank_s
*bank
)
94 lpc2000_flash_bank_t
*lpc2000_info
= bank
->driver_priv
;
96 /* default to a 4096 write buffer */
97 lpc2000_info
->cmd51_max_buffer
= 4096;
99 if (lpc2000_info
->variant
== 1)
104 /* variant 1 has different layout for 128kb and 256kb flashes */
105 if (bank
->size
== 128 * 1024)
107 bank
->num_sectors
= 16;
108 bank
->sectors
= malloc(sizeof(flash_sector_t
) * 16);
109 for (i
= 0; i
< 16; i
++)
111 bank
->sectors
[i
].offset
= offset
;
112 bank
->sectors
[i
].size
= 8 * 1024;
113 offset
+= bank
->sectors
[i
].size
;
114 bank
->sectors
[i
].is_erased
= -1;
115 bank
->sectors
[i
].is_protected
= 1;
118 else if (bank
->size
== 256 * 1024)
120 bank
->num_sectors
= 18;
121 bank
->sectors
= malloc(sizeof(flash_sector_t
) * 18);
123 for (i
= 0; i
< 8; i
++)
125 bank
->sectors
[i
].offset
= offset
;
126 bank
->sectors
[i
].size
= 8 * 1024;
127 offset
+= bank
->sectors
[i
].size
;
128 bank
->sectors
[i
].is_erased
= -1;
129 bank
->sectors
[i
].is_protected
= 1;
131 for (i
= 8; i
< 10; i
++)
133 bank
->sectors
[i
].offset
= offset
;
134 bank
->sectors
[i
].size
= 64 * 1024;
135 offset
+= bank
->sectors
[i
].size
;
136 bank
->sectors
[i
].is_erased
= -1;
137 bank
->sectors
[i
].is_protected
= 1;
139 for (i
= 10; i
< 18; i
++)
141 bank
->sectors
[i
].offset
= offset
;
142 bank
->sectors
[i
].size
= 8 * 1024;
143 offset
+= bank
->sectors
[i
].size
;
144 bank
->sectors
[i
].is_erased
= -1;
145 bank
->sectors
[i
].is_protected
= 1;
150 LOG_ERROR("BUG: unknown bank->size encountered");
154 else if (lpc2000_info
->variant
== 2)
160 /* variant 2 has a uniform layout, only number of sectors differs */
164 lpc2000_info
->cmd51_max_buffer
= 1024;
168 lpc2000_info
->cmd51_max_buffer
= 1024;
191 LOG_ERROR("BUG: unknown bank->size encountered");
196 bank
->num_sectors
= num_sectors
;
197 bank
->sectors
= malloc(sizeof(flash_sector_t
) * num_sectors
);
199 for (i
= 0; i
< num_sectors
; i
++)
201 if ((i
>= 0) && (i
< 8))
203 bank
->sectors
[i
].offset
= offset
;
204 bank
->sectors
[i
].size
= 4 * 1024;
205 offset
+= bank
->sectors
[i
].size
;
206 bank
->sectors
[i
].is_erased
= -1;
207 bank
->sectors
[i
].is_protected
= 1;
209 if ((i
>= 8) && (i
< 22))
211 bank
->sectors
[i
].offset
= offset
;
212 bank
->sectors
[i
].size
= 32 * 1024;
213 offset
+= bank
->sectors
[i
].size
;
214 bank
->sectors
[i
].is_erased
= -1;
215 bank
->sectors
[i
].is_protected
= 1;
217 if ((i
>= 22) && (i
< 27))
219 bank
->sectors
[i
].offset
= offset
;
220 bank
->sectors
[i
].size
= 4 * 1024;
221 offset
+= bank
->sectors
[i
].size
;
222 bank
->sectors
[i
].is_erased
= -1;
223 bank
->sectors
[i
].is_protected
= 1;
229 LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
236 /* call LPC2000 IAP function
237 * uses 172 bytes working area
238 * 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
239 * 0x8 to 0x1f: command parameter table
240 * 0x20 to 0x2b: command result table
241 * 0x2c to 0xac: stack (only 128b needed)
243 static int lpc2000_iap_call(flash_bank_t
*bank
, int code
, u32 param_table
[5], u32 result_table
[2])
246 lpc2000_flash_bank_t
*lpc2000_info
= bank
->driver_priv
;
247 target_t
*target
= bank
->target
;
248 mem_param_t mem_params
[2];
249 reg_param_t reg_params
[5];
250 armv4_5_algorithm_t armv4_5_info
;
253 /* regrab previously allocated working_area, or allocate a new one */
254 if (!lpc2000_info
->iap_working_area
)
258 /* make sure we have a working area */
259 if (target_alloc_working_area(target
, 172, &lpc2000_info
->iap_working_area
) != ERROR_OK
)
261 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
262 return ERROR_FLASH_OPERATION_FAILED
;
265 /* write IAP code to working area */
266 target_buffer_set_u32(target
, jump_gate
, ARMV4_5_BX(12));
267 target_buffer_set_u32(target
, jump_gate
+ 4, ARMV4_5_B(0xfffffe, 0));
268 if((retval
= target
->type
->write_memory(target
, lpc2000_info
->iap_working_area
->address
, 4, 2, jump_gate
)) != ERROR_OK
)
274 armv4_5_info
.common_magic
= ARMV4_5_COMMON_MAGIC
;
275 armv4_5_info
.core_mode
= ARMV4_5_MODE_SVC
;
276 armv4_5_info
.core_state
= ARMV4_5_STATE_ARM
;
278 /* command parameter table */
279 init_mem_param(&mem_params
[0], lpc2000_info
->iap_working_area
->address
+ 8, 4 * 6, PARAM_OUT
);
280 target_buffer_set_u32(target
, mem_params
[0].value
, code
);
281 target_buffer_set_u32(target
, mem_params
[0].value
+ 0x4, param_table
[0]);
282 target_buffer_set_u32(target
, mem_params
[0].value
+ 0x8, param_table
[1]);
283 target_buffer_set_u32(target
, mem_params
[0].value
+ 0xc, param_table
[2]);
284 target_buffer_set_u32(target
, mem_params
[0].value
+ 0x10, param_table
[3]);
285 target_buffer_set_u32(target
, mem_params
[0].value
+ 0x14, param_table
[4]);
287 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
288 buf_set_u32(reg_params
[0].value
, 0, 32, lpc2000_info
->iap_working_area
->address
+ 0x8);
290 /* command result table */
291 init_mem_param(&mem_params
[1], lpc2000_info
->iap_working_area
->address
+ 0x20, 4 * 3, PARAM_IN
);
293 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
294 buf_set_u32(reg_params
[1].value
, 0, 32, lpc2000_info
->iap_working_area
->address
+ 0x20);
296 /* IAP entry point */
297 init_reg_param(®_params
[2], "r12", 32, PARAM_OUT
);
298 buf_set_u32(reg_params
[2].value
, 0, 32, 0x7ffffff1);
301 init_reg_param(®_params
[3], "r13_svc", 32, PARAM_OUT
);
302 buf_set_u32(reg_params
[3].value
, 0, 32, lpc2000_info
->iap_working_area
->address
+ 0xac);
305 init_reg_param(®_params
[4], "lr_svc", 32, PARAM_OUT
);
306 buf_set_u32(reg_params
[4].value
, 0, 32, lpc2000_info
->iap_working_area
->address
+ 0x4);
308 target
->type
->run_algorithm(target
, 2, mem_params
, 5, reg_params
, lpc2000_info
->iap_working_area
->address
, lpc2000_info
->iap_working_area
->address
+ 0x4, 10000, &armv4_5_info
);
310 status_code
= buf_get_u32(mem_params
[1].value
, 0, 32);
311 result_table
[0] = target_buffer_get_u32(target
, mem_params
[1].value
);
312 result_table
[1] = target_buffer_get_u32(target
, mem_params
[1].value
+ 4);
314 destroy_mem_param(&mem_params
[0]);
315 destroy_mem_param(&mem_params
[1]);
317 destroy_reg_param(®_params
[0]);
318 destroy_reg_param(®_params
[1]);
319 destroy_reg_param(®_params
[2]);
320 destroy_reg_param(®_params
[3]);
321 destroy_reg_param(®_params
[4]);
326 static int lpc2000_iap_blank_check(struct flash_bank_s
*bank
, int first
, int last
)
333 if ((first
< 0) || (last
>= bank
->num_sectors
))
334 return ERROR_FLASH_SECTOR_INVALID
;
336 for (i
= first
; i
<= last
; i
++)
338 /* check single sector */
339 param_table
[0] = param_table
[1] = i
;
340 status_code
= lpc2000_iap_call(bank
, 53, param_table
, result_table
);
344 case ERROR_FLASH_OPERATION_FAILED
:
345 return ERROR_FLASH_OPERATION_FAILED
;
346 case LPC2000_CMD_SUCCESS
:
347 bank
->sectors
[i
].is_erased
= 1;
349 case LPC2000_SECTOR_NOT_BLANK
:
350 bank
->sectors
[i
].is_erased
= 0;
352 case LPC2000_INVALID_SECTOR
:
353 bank
->sectors
[i
].is_erased
= 0;
356 return ERROR_FLASH_BUSY
;
359 LOG_ERROR("BUG: unknown LPC2000 status code");
367 /* flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
369 static int lpc2000_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
)
371 lpc2000_flash_bank_t
*lpc2000_info
;
375 LOG_WARNING("incomplete flash_bank lpc2000 configuration");
376 return ERROR_FLASH_BANK_INVALID
;
379 lpc2000_info
= malloc(sizeof(lpc2000_flash_bank_t
));
380 bank
->driver_priv
= lpc2000_info
;
382 if (strcmp(args
[6], "lpc2000_v1") == 0)
384 lpc2000_info
->variant
= 1;
385 lpc2000_info
->cmd51_dst_boundary
= 512;
386 lpc2000_info
->cmd51_can_256b
= 0;
387 lpc2000_info
->cmd51_can_8192b
= 1;
389 else if (strcmp(args
[6], "lpc2000_v2") == 0)
391 lpc2000_info
->variant
= 2;
392 lpc2000_info
->cmd51_dst_boundary
= 256;
393 lpc2000_info
->cmd51_can_256b
= 1;
394 lpc2000_info
->cmd51_can_8192b
= 0;
398 LOG_ERROR("unknown LPC2000 variant");
400 return ERROR_FLASH_BANK_INVALID
;
403 lpc2000_info
->iap_working_area
= NULL
;
404 lpc2000_info
->cclk
= strtoul(args
[7], NULL
, 0);
405 lpc2000_info
->calc_checksum
= 0;
406 lpc2000_build_sector_list(bank
);
410 if (strcmp(args
[8], "calc_checksum") == 0)
411 lpc2000_info
->calc_checksum
= 1;
417 static int lpc2000_erase(struct flash_bank_s
*bank
, int first
, int last
)
419 lpc2000_flash_bank_t
*lpc2000_info
= bank
->driver_priv
;
424 if (bank
->target
->state
!= TARGET_HALTED
)
426 LOG_ERROR("Target not halted");
427 return ERROR_TARGET_NOT_HALTED
;
430 param_table
[0] = first
;
431 param_table
[1] = last
;
432 param_table
[2] = lpc2000_info
->cclk
;
434 /* Prepare sectors */
435 status_code
= lpc2000_iap_call(bank
, 50, param_table
, result_table
);
438 case ERROR_FLASH_OPERATION_FAILED
:
439 return ERROR_FLASH_OPERATION_FAILED
;
440 case LPC2000_CMD_SUCCESS
:
442 case LPC2000_INVALID_SECTOR
:
443 return ERROR_FLASH_SECTOR_INVALID
;
446 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code
);
447 return ERROR_FLASH_OPERATION_FAILED
;
451 status_code
= lpc2000_iap_call(bank
, 52, param_table
, result_table
);
454 case ERROR_FLASH_OPERATION_FAILED
:
455 return ERROR_FLASH_OPERATION_FAILED
;
456 case LPC2000_CMD_SUCCESS
:
458 case LPC2000_INVALID_SECTOR
:
459 return ERROR_FLASH_SECTOR_INVALID
;
462 LOG_WARNING("lpc2000 erase sectors returned %i", status_code
);
463 return ERROR_FLASH_OPERATION_FAILED
;
469 static int lpc2000_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
)
471 /* can't protect/unprotect on the lpc2000 */
475 static int lpc2000_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
)
477 lpc2000_flash_bank_t
*lpc2000_info
= bank
->driver_priv
;
478 target_t
*target
= bank
->target
;
479 u32 dst_min_alignment
;
480 u32 bytes_remaining
= count
;
481 u32 bytes_written
= 0;
482 int first_sector
= 0;
488 working_area_t
*download_area
;
489 int retval
= ERROR_OK
;
491 if (bank
->target
->state
!= TARGET_HALTED
)
493 LOG_ERROR("Target not halted");
494 return ERROR_TARGET_NOT_HALTED
;
497 if (offset
+ count
> bank
->size
)
498 return ERROR_FLASH_DST_OUT_OF_BANK
;
500 if (lpc2000_info
->cmd51_can_256b
)
501 dst_min_alignment
= 256;
503 dst_min_alignment
= 512;
505 if (offset
% dst_min_alignment
)
507 LOG_WARNING("offset 0x%x breaks required alignment 0x%x", offset
, dst_min_alignment
);
508 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
511 for (i
= 0; i
< bank
->num_sectors
; i
++)
513 if (offset
>= bank
->sectors
[i
].offset
)
515 if (offset
+ CEIL(count
, dst_min_alignment
) * dst_min_alignment
> bank
->sectors
[i
].offset
)
519 LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector
, last_sector
);
521 /* check if exception vectors should be flashed */
522 if ((offset
== 0) && (count
>= 0x20) && lpc2000_info
->calc_checksum
)
526 for (i
= 0; i
< 8; i
++)
528 LOG_DEBUG("0x%2.2x: 0x%8.8x", i
* 4, buf_get_u32(buffer
+ (i
* 4), 0, 32));
530 checksum
+= buf_get_u32(buffer
+ (i
* 4), 0, 32);
532 checksum
= 0 - checksum
;
533 LOG_DEBUG("checksum: 0x%8.8x", checksum
);
535 u32 original_value
=buf_get_u32(buffer
+ (5 * 4), 0, 32);
536 if (original_value
!=checksum
)
538 LOG_WARNING("Verification will fail since checksum in image(0x%8.8x) written to flash was different from calculated vector checksum(0x%8.8x).",
539 original_value
, checksum
);
540 LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector checksum.");
543 buf_set_u32(buffer
+ 0x14, 0, 32, checksum
);
546 /* allocate a working area */
547 if (target_alloc_working_area(target
, lpc2000_info
->cmd51_max_buffer
, &download_area
) != ERROR_OK
)
549 LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
550 return ERROR_FLASH_OPERATION_FAILED
;
553 while (bytes_remaining
> 0)
556 if (bytes_remaining
>= lpc2000_info
->cmd51_max_buffer
)
557 thisrun_bytes
= lpc2000_info
->cmd51_max_buffer
;
558 else if (bytes_remaining
>= 1024)
559 thisrun_bytes
= 1024;
560 else if ((bytes_remaining
>= 512) || (!lpc2000_info
->cmd51_can_256b
))
565 /* Prepare sectors */
566 param_table
[0] = first_sector
;
567 param_table
[1] = last_sector
;
568 status_code
= lpc2000_iap_call(bank
, 50, param_table
, result_table
);
571 case ERROR_FLASH_OPERATION_FAILED
:
572 retval
= ERROR_FLASH_OPERATION_FAILED
;
574 case LPC2000_CMD_SUCCESS
:
576 case LPC2000_INVALID_SECTOR
:
577 retval
= ERROR_FLASH_SECTOR_INVALID
;
580 LOG_WARNING("lpc2000 prepare sectors returned %i", status_code
);
581 retval
= ERROR_FLASH_OPERATION_FAILED
;
585 /* Exit if error occured */
586 if (retval
!= ERROR_OK
)
589 if (bytes_remaining
>= thisrun_bytes
)
591 if ((retval
= target_write_buffer(bank
->target
, download_area
->address
, thisrun_bytes
, buffer
+ bytes_written
)) != ERROR_OK
)
593 retval
= ERROR_FLASH_OPERATION_FAILED
;
599 u8
*last_buffer
= malloc(thisrun_bytes
);
601 memcpy(last_buffer
, buffer
+ bytes_written
, bytes_remaining
);
602 for (i
= bytes_remaining
; i
< thisrun_bytes
; i
++)
603 last_buffer
[i
] = 0xff;
604 target_write_buffer(bank
->target
, download_area
->address
, thisrun_bytes
, last_buffer
);
608 LOG_DEBUG("writing 0x%x bytes to address 0x%x", thisrun_bytes
, bank
->base
+ offset
+ bytes_written
);
611 param_table
[0] = bank
->base
+ offset
+ bytes_written
;
612 param_table
[1] = download_area
->address
;
613 param_table
[2] = thisrun_bytes
;
614 param_table
[3] = lpc2000_info
->cclk
;
615 status_code
= lpc2000_iap_call(bank
, 51, param_table
, result_table
);
618 case ERROR_FLASH_OPERATION_FAILED
:
619 retval
= ERROR_FLASH_OPERATION_FAILED
;
621 case LPC2000_CMD_SUCCESS
:
623 case LPC2000_INVALID_SECTOR
:
624 retval
= ERROR_FLASH_SECTOR_INVALID
;
627 LOG_WARNING("lpc2000 returned %i", status_code
);
628 retval
= ERROR_FLASH_OPERATION_FAILED
;
632 /* Exit if error occured */
633 if (retval
!= ERROR_OK
)
636 if (bytes_remaining
> thisrun_bytes
)
637 bytes_remaining
-= thisrun_bytes
;
640 bytes_written
+= thisrun_bytes
;
643 target_free_working_area(target
, download_area
);
648 static int lpc2000_probe(struct flash_bank_s
*bank
)
650 /* we can't probe on an lpc2000
651 * if this is an lpc2xxx, it has the configured flash
656 static int lpc2000_erase_check(struct flash_bank_s
*bank
)
658 if (bank
->target
->state
!= TARGET_HALTED
)
660 LOG_ERROR("Target not halted");
661 return ERROR_TARGET_NOT_HALTED
;
664 return lpc2000_iap_blank_check(bank
, 0, bank
->num_sectors
- 1);
667 static int lpc2000_protect_check(struct flash_bank_s
*bank
)
669 /* sectors are always protected */
673 static int lpc2000_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
)
675 lpc2000_flash_bank_t
*lpc2000_info
= bank
->driver_priv
;
677 snprintf(buf
, buf_size
, "lpc2000 flash driver variant: %i, clk: %i", lpc2000_info
->variant
, lpc2000_info
->cclk
);
682 static int lpc2000_handle_part_id_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
691 return ERROR_COMMAND_SYNTAX_ERROR
;
694 bank
= get_flash_bank_by_num(strtoul(args
[0], NULL
, 0));
697 command_print(cmd_ctx
, "flash bank '#%s' is out of bounds", args
[0]);
701 if (bank
->target
->state
!= TARGET_HALTED
)
703 LOG_ERROR("Target not halted");
704 return ERROR_TARGET_NOT_HALTED
;
707 if ((status_code
= lpc2000_iap_call(bank
, 54, param_table
, result_table
)) != 0x0)
709 if (status_code
== ERROR_FLASH_OPERATION_FAILED
)
711 command_print(cmd_ctx
, "no sufficient working area specified, can't access LPC2000 IAP interface");
714 command_print(cmd_ctx
, "lpc2000 IAP returned status code %i", status_code
);
718 command_print(cmd_ctx
, "lpc2000 part id: 0x%8.8x", result_table
[0]);
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