1 /***************************************************************************
2 * Copyright (C) 2006 by Magnus Lundin *
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 ***************************************************************************/
21 /***************************************************************************
22 There are some things to notice
24 * AT91SAM7S64 is tested
25 * All AT91SAM7Sxx and AT91SAM7Xxx should work but is not tested
26 * All parameters are identified from onchip configuartion registers
28 * The flash controller handles erases automatically on a page (128/265 byte) basis
29 * Only an EraseAll command is supported by the controller
30 * Partial erases can be implemented in software by writing one 0xFFFFFFFF word to
31 * some location in every page in the region to be erased
33 * Lock regions (sectors) are 32 or 64 pages
35 ***************************************************************************/
40 #include "replacements.h"
47 #include "binarybuffer.h"
54 int at91sam7_register_commands(struct command_context_s
*cmd_ctx
);
55 int at91sam7_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
);
56 int at91sam7_erase(struct flash_bank_s
*bank
, int first
, int last
);
57 int at91sam7_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
);
58 int at91sam7_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
);
59 int at91sam7_probe(struct flash_bank_s
*bank
);
60 int at91sam7_erase_check(struct flash_bank_s
*bank
);
61 int at91sam7_protect_check(struct flash_bank_s
*bank
);
62 int at91sam7_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
);
64 u32
at91sam7_get_flash_status(flash_bank_t
*bank
);
65 void at91sam7_set_flash_mode(flash_bank_t
*bank
,int mode
);
66 u32
at91sam7_wait_status_busy(flash_bank_t
*bank
, u32 waitbits
, int timeout
);
67 int at91sam7_handle_gpnvm_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
69 flash_driver_t at91sam7_flash
=
72 .register_commands
= at91sam7_register_commands
,
73 .flash_bank_command
= at91sam7_flash_bank_command
,
74 .erase
= at91sam7_erase
,
75 .protect
= at91sam7_protect
,
76 .write
= at91sam7_write
,
77 .probe
= at91sam7_probe
,
78 .erase_check
= at91sam7_erase_check
,
79 .protect_check
= at91sam7_protect_check
,
84 char * EPROC
[8]= {"Unknown","ARM946-E","ARM7TDMI","Unknown","ARM920T","ARM926EJ-S","Unknown","Unknown"};
100 0x200000, /* 2048K */
123 int at91sam7_register_commands(struct command_context_s
*cmd_ctx
)
125 command_t
*at91sam7_cmd
= register_command(cmd_ctx
, NULL
, "at91sam7", NULL
, COMMAND_ANY
, NULL
);
126 register_command(cmd_ctx
, at91sam7_cmd
, "gpnvm", at91sam7_handle_gpnvm_command
, COMMAND_EXEC
,
127 "at91sam7 gpnvm <num> <bit> set|clear, set or clear at91sam7 gpnvm bit");
132 u32
at91sam7_get_flash_status(flash_bank_t
*bank
)
134 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
135 target_t
*target
= at91sam7_info
->target
;
138 target_read_u32(target
, MC_FSR
, &fsr
);
143 /** Read clock configuration and set at91sam7_info->usec_clocks*/
144 void at91sam7_read_clock_info(flash_bank_t
*bank
)
146 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
147 target_t
*target
= at91sam7_info
->target
;
148 u32 mckr
, mcfr
, pllr
;
149 unsigned long tmp
= 0, mainfreq
;
151 /* Read main clock freqency register */
152 target_read_u32(target
, CKGR_MCFR
, &mcfr
);
153 /* Read master clock register */
154 target_read_u32(target
, PMC_MCKR
, &mckr
);
155 /* Read Clock Generator PLL Register */
156 target_read_u32(target
, CKGR_PLLR
, &pllr
);
158 at91sam7_info
->mck_valid
= 0;
159 switch (mckr
& PMC_MCKR_CSS
) {
160 case 0: /* Slow Clock */
161 at91sam7_info
->mck_valid
= 1;
164 case 1: /* Main Clock */
165 if (mcfr
& CKGR_MCFR_MAINRDY
)
167 at91sam7_info
->mck_valid
= 1;
168 mainfreq
= RC_FREQ
/ 16ul * (mcfr
& 0xffff);
173 case 2: /* Reserved */
175 case 3: /* PLL Clock */
176 if (mcfr
& CKGR_MCFR_MAINRDY
)
178 target_read_u32(target
, CKGR_PLLR
, &pllr
);
179 if (!(pllr
& CKGR_PLLR_DIV
))
181 at91sam7_info
->mck_valid
= 1;
182 mainfreq
= RC_FREQ
/ 16ul * (mcfr
& 0xffff);
183 /* Integer arithmetic should have sufficient precision
184 as long as PLL is properly configured. */
185 tmp
= mainfreq
/ (pllr
& CKGR_PLLR_DIV
) *
186 (((pllr
& CKGR_PLLR_MUL
) >> 16) + 1);
191 /* Prescaler adjust */
192 if (((mckr
& PMC_MCKR_PRES
) >> 2) == 7)
193 at91sam7_info
->mck_valid
= 0;
195 at91sam7_info
->mck_freq
= tmp
>> ((mckr
& PMC_MCKR_PRES
) >> 2);
197 /* Forget old flash timing */
198 at91sam7_set_flash_mode(bank
,FMR_TIMING_NONE
);
201 /* Setup the timimg registers for nvbits or normal flash */
202 void at91sam7_set_flash_mode(flash_bank_t
*bank
,int mode
)
204 u32 fmr
, fmcn
= 0, fws
= 0;
205 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
206 target_t
*target
= at91sam7_info
->target
;
208 if (mode
&& (mode
!= at91sam7_info
->flashmode
))
210 /* Always round up (ceil) */
211 if (mode
==FMR_TIMING_NVBITS
)
213 if (at91sam7_info
->cidr_arch
== 0x60)
215 /* AT91SAM7A3 uses master clocks in 100 ns */
216 fmcn
= (at91sam7_info
->mck_freq
/10000000ul)+1;
220 /* master clocks in 1uS for ARCH 0x7 types */
221 fmcn
= (at91sam7_info
->mck_freq
/1000000ul)+1;
224 else if (mode
==FMR_TIMING_FLASH
)
225 /* main clocks in 1.5uS */
226 fmcn
= (at91sam7_info
->mck_freq
/666666ul)+1;
228 /* Only allow fmcn=0 if clock period is > 30 us = 33kHz. */
229 if (at91sam7_info
->mck_freq
<= 33333ul)
231 /* Only allow fws=0 if clock frequency is < 30 MHz. */
232 if (at91sam7_info
->mck_freq
> 30000000ul)
235 DEBUG("fmcn: %i", fmcn
);
236 fmr
= fmcn
<< 16 | fws
<< 8;
237 target_write_u32(target
, MC_FMR
, fmr
);
240 at91sam7_info
->flashmode
= mode
;
243 u32
at91sam7_wait_status_busy(flash_bank_t
*bank
, u32 waitbits
, int timeout
)
247 while ((!((status
= at91sam7_get_flash_status(bank
)) & waitbits
)) && (timeout
-- > 0))
249 DEBUG("status: 0x%x", status
);
253 DEBUG("status: 0x%x", status
);
257 ERROR("status register: 0x%x", status
);
259 ERROR("Lock Error Bit Detected, Operation Abort");
261 ERROR("Invalid command and/or bad keyword, Operation Abort");
263 ERROR("Security Bit Set, Operation Abort");
270 /* Send one command to the AT91SAM flash controller */
271 int at91sam7_flash_command(struct flash_bank_s
*bank
,u8 cmd
,u16 pagen
)
274 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
275 target_t
*target
= at91sam7_info
->target
;
277 fcr
= (0x5A<<24) | (pagen
<<8) | cmd
;
278 target_write_u32(target
, MC_FCR
, fcr
);
279 DEBUG("Flash command: 0x%x, pagenumber:%u", fcr
, pagen
);
281 if ((at91sam7_info
->cidr_arch
== 0x60)&&((cmd
==SLB
)|(cmd
==CLB
)))
283 /* Lock bit manipulation on AT91SAM7A3 waits for FC_FSR bit 1, EOL */
284 if (at91sam7_wait_status_busy(bank
, MC_FSR_EOL
, 10)&0x0C)
286 return ERROR_FLASH_OPERATION_FAILED
;
291 if (at91sam7_wait_status_busy(bank
, MC_FSR_FRDY
, 10)&0x0C)
293 return ERROR_FLASH_OPERATION_FAILED
;
298 /* Read device id register, main clock frequency register and fill in driver info structure */
299 int at91sam7_read_part_info(struct flash_bank_s
*bank
)
301 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
302 target_t
*target
= at91sam7_info
->target
;
305 if (at91sam7_info
->target
->state
!= TARGET_HALTED
)
307 return ERROR_TARGET_NOT_HALTED
;
310 /* Read and parse chip identification register */
311 target_read_u32(target
, DBGU_CIDR
, &cidr
);
315 WARNING("Cannot identify target as an AT91SAM");
316 return ERROR_FLASH_OPERATION_FAILED
;
319 at91sam7_info
->cidr
= cidr
;
320 at91sam7_info
->cidr_ext
= (cidr
>>31)&0x0001;
321 at91sam7_info
->cidr_nvptyp
= (cidr
>>28)&0x0007;
322 at91sam7_info
->cidr_arch
= (cidr
>>20)&0x00FF;
323 at91sam7_info
->cidr_sramsiz
= (cidr
>>16)&0x000F;
324 at91sam7_info
->cidr_nvpsiz2
= (cidr
>>12)&0x000F;
325 at91sam7_info
->cidr_nvpsiz
= (cidr
>>8)&0x000F;
326 at91sam7_info
->cidr_eproc
= (cidr
>>5)&0x0007;
327 at91sam7_info
->cidr_version
= cidr
&0x001F;
328 bank
->size
= NVPSIZ
[at91sam7_info
->cidr_nvpsiz
];
329 at91sam7_info
->target_name
= "Unknown";
331 DEBUG("nvptyp: 0x%3.3x, arch: 0x%4.4x", at91sam7_info
->cidr_nvptyp
, at91sam7_info
->cidr_arch
);
333 /* Read main and master clock freqency register */
334 at91sam7_read_clock_info(bank
);
336 status
= at91sam7_get_flash_status(bank
);
337 at91sam7_info
->lockbits
= status
>>16;
338 at91sam7_info
->securitybit
= (status
>>4)&0x01;
340 if (at91sam7_info
->cidr_arch
== 0x70 )
342 at91sam7_info
->num_nvmbits
= 2;
343 at91sam7_info
->nvmbits
= (status
>>8)&0x03;
344 bank
->base
= 0x100000;
346 if (bank
->size
==0x40000) /* AT91SAM7S256 */
348 at91sam7_info
->target_name
= "AT91SAM7S256";
349 at91sam7_info
->num_lockbits
= 16;
350 at91sam7_info
->pagesize
= 256;
351 at91sam7_info
->pages_in_lockregion
= 64;
352 at91sam7_info
->num_pages
= 16*64;
354 if (bank
->size
==0x20000) /* AT91SAM7S128 */
356 at91sam7_info
->target_name
= "AT91SAM7S128";
357 at91sam7_info
->num_lockbits
= 8;
358 at91sam7_info
->pagesize
= 256;
359 at91sam7_info
->pages_in_lockregion
= 64;
360 at91sam7_info
->num_pages
= 8*64;
362 if (bank
->size
==0x10000) /* AT91SAM7S64 */
364 at91sam7_info
->target_name
= "AT91SAM7S64";
365 at91sam7_info
->num_lockbits
= 16;
366 at91sam7_info
->pagesize
= 128;
367 at91sam7_info
->pages_in_lockregion
= 32;
368 at91sam7_info
->num_pages
= 16*32;
370 if (bank
->size
==0x08000) /* AT91SAM7S321/32 */
372 at91sam7_info
->target_name
= "AT91SAM7S321/32";
373 at91sam7_info
->num_lockbits
= 8;
374 at91sam7_info
->pagesize
= 128;
375 at91sam7_info
->pages_in_lockregion
= 32;
376 at91sam7_info
->num_pages
= 8*32;
382 if (at91sam7_info
->cidr_arch
== 0x71 )
384 at91sam7_info
->num_nvmbits
= 3;
385 at91sam7_info
->nvmbits
= (status
>>8)&0x07;
386 bank
->base
= 0x100000;
388 if (bank
->size
==0x40000) /* AT91SAM7XC256 */
390 at91sam7_info
->target_name
= "AT91SAM7XC256";
391 at91sam7_info
->num_lockbits
= 16;
392 at91sam7_info
->pagesize
= 256;
393 at91sam7_info
->pages_in_lockregion
= 64;
394 at91sam7_info
->num_pages
= 16*64;
396 if (bank
->size
==0x20000) /* AT91SAM7XC128 */
398 at91sam7_info
->target_name
= "AT91SAM7XC128";
399 at91sam7_info
->num_lockbits
= 8;
400 at91sam7_info
->pagesize
= 256;
401 at91sam7_info
->pages_in_lockregion
= 64;
402 at91sam7_info
->num_pages
= 8*64;
408 if (at91sam7_info
->cidr_arch
== 0x72 )
410 at91sam7_info
->num_nvmbits
= 2;
411 at91sam7_info
->nvmbits
= (status
>>8)&0x03;
412 bank
->base
= 0x100000;
414 if (bank
->size
==0x80000) /* AT91SAM7SE512 */
416 at91sam7_info
->target_name
= "AT91SAM7SE512";
417 at91sam7_info
->num_lockbits
= 32;
418 at91sam7_info
->pagesize
= 256;
419 at91sam7_info
->pages_in_lockregion
= 64;
420 at91sam7_info
->num_pages
= 32*64;
422 if (bank
->size
==0x40000)
424 at91sam7_info
->target_name
= "AT91SAM7SE256";
425 at91sam7_info
->num_lockbits
= 16;
426 at91sam7_info
->pagesize
= 256;
427 at91sam7_info
->pages_in_lockregion
= 64;
428 at91sam7_info
->num_pages
= 16*64;
430 if (bank
->size
==0x08000)
432 at91sam7_info
->target_name
= "AT91SAM7SE32";
433 at91sam7_info
->num_lockbits
= 8;
434 at91sam7_info
->pagesize
= 128;
435 at91sam7_info
->pages_in_lockregion
= 32;
436 at91sam7_info
->num_pages
= 8*32;
442 if (at91sam7_info
->cidr_arch
== 0x75 )
444 at91sam7_info
->num_nvmbits
= 3;
445 at91sam7_info
->nvmbits
= (status
>>8)&0x07;
446 bank
->base
= 0x100000;
448 if (bank
->size
==0x40000) /* AT91SAM7X256 */
450 at91sam7_info
->target_name
= "AT91SAM7X256";
451 at91sam7_info
->num_lockbits
= 16;
452 at91sam7_info
->pagesize
= 256;
453 at91sam7_info
->pages_in_lockregion
= 64;
454 at91sam7_info
->num_pages
= 16*64;
456 if (bank
->size
==0x20000) /* AT91SAM7X128 */
458 at91sam7_info
->target_name
= "AT91SAM7X128";
459 at91sam7_info
->num_lockbits
= 8;
460 at91sam7_info
->pagesize
= 256;
461 at91sam7_info
->pages_in_lockregion
= 64;
462 at91sam7_info
->num_pages
= 8*64;
468 if (at91sam7_info
->cidr_arch
== 0x60 )
470 at91sam7_info
->num_nvmbits
= 3;
471 at91sam7_info
->nvmbits
= (status
>>8)&0x07;
472 bank
->base
= 0x100000;
475 if (bank
->size
== 0x40000) /* AT91SAM7A3 */
477 at91sam7_info
->target_name
= "AT91SAM7A3";
478 at91sam7_info
->num_lockbits
= 16;
479 at91sam7_info
->pagesize
= 256;
480 at91sam7_info
->pages_in_lockregion
= 16;
481 at91sam7_info
->num_pages
= 16*64;
486 WARNING("at91sam7 flash only tested for AT91SAM7Sxx series");
491 int at91sam7_erase_check(struct flash_bank_s
*bank
)
493 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
495 if (!at91sam7_info
->working_area_size
)
505 int at91sam7_protect_check(struct flash_bank_s
*bank
)
509 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
511 if (at91sam7_info
->cidr
== 0)
513 at91sam7_read_part_info(bank
);
516 if (at91sam7_info
->cidr
== 0)
518 WARNING("Cannot identify target as an AT91SAM");
519 return ERROR_FLASH_OPERATION_FAILED
;
522 status
= at91sam7_get_flash_status(bank
);
523 at91sam7_info
->lockbits
= status
>> 16;
528 int at91sam7_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
)
530 at91sam7_flash_bank_t
*at91sam7_info
;
534 WARNING("incomplete flash_bank at91sam7 configuration");
535 return ERROR_FLASH_BANK_INVALID
;
538 at91sam7_info
= malloc(sizeof(at91sam7_flash_bank_t
));
539 bank
->driver_priv
= at91sam7_info
;
541 at91sam7_info
->target
= get_target_by_num(strtoul(args
[5], NULL
, 0));
542 if (!at91sam7_info
->target
)
544 ERROR("no target '%s' configured", args
[5]);
548 /* part wasn't probed for info yet */
549 at91sam7_info
->cidr
= 0;
554 int at91sam7_erase(struct flash_bank_s
*bank
, int first
, int last
)
556 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
558 if (at91sam7_info
->target
->state
!= TARGET_HALTED
)
560 return ERROR_TARGET_NOT_HALTED
;
563 if (at91sam7_info
->cidr
== 0)
565 at91sam7_read_part_info(bank
);
568 if (at91sam7_info
->cidr
== 0)
570 WARNING("Cannot identify target as an AT91SAM");
571 return ERROR_FLASH_OPERATION_FAILED
;
574 if ((first
< 0) || (last
< first
) || (last
>= at91sam7_info
->num_lockbits
))
576 return ERROR_FLASH_SECTOR_INVALID
;
579 /* Configure the flash controller timing */
580 at91sam7_read_clock_info(bank
);
581 at91sam7_set_flash_mode(bank
,FMR_TIMING_FLASH
);
583 if ((first
== 0) && (last
== (at91sam7_info
->num_lockbits
-1)))
585 return at91sam7_flash_command(bank
, EA
, 0);
588 WARNING("Can only erase the whole flash area, pages are autoerased on write");
589 return ERROR_FLASH_OPERATION_FAILED
;
592 int at91sam7_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
)
594 u32 cmd
, pagen
, status
;
597 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
599 if (at91sam7_info
->target
->state
!= TARGET_HALTED
)
601 return ERROR_TARGET_NOT_HALTED
;
604 if ((first
< 0) || (last
< first
) || (last
>= at91sam7_info
->num_lockbits
))
606 return ERROR_FLASH_SECTOR_INVALID
;
609 if (at91sam7_info
->cidr
== 0)
611 at91sam7_read_part_info(bank
);
614 if (at91sam7_info
->cidr
== 0)
616 WARNING("Cannot identify target as an AT91SAM");
617 return ERROR_FLASH_OPERATION_FAILED
;
620 /* Configure the flash controller timing */
621 at91sam7_read_clock_info(bank
);
622 at91sam7_set_flash_mode(bank
,FMR_TIMING_NVBITS
);
624 for (lockregion
=first
;lockregion
<=last
;lockregion
++)
626 pagen
= lockregion
*at91sam7_info
->pages_in_lockregion
;
631 if (at91sam7_flash_command(bank
, cmd
, pagen
) != ERROR_OK
)
633 return ERROR_FLASH_OPERATION_FAILED
;
637 status
= at91sam7_get_flash_status(bank
);
638 at91sam7_info
->lockbits
= status
>>16;
644 int at91sam7_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
)
646 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
647 target_t
*target
= at91sam7_info
->target
;
648 u32 dst_min_alignment
, wcount
, bytes_remaining
= count
;
649 u32 first_page
, last_page
, pagen
, buffer_pos
;
651 if (at91sam7_info
->target
->state
!= TARGET_HALTED
)
653 return ERROR_TARGET_NOT_HALTED
;
656 if (at91sam7_info
->cidr
== 0)
658 at91sam7_read_part_info(bank
);
661 if (at91sam7_info
->cidr
== 0)
663 WARNING("Cannot identify target as an AT91SAM");
664 return ERROR_FLASH_OPERATION_FAILED
;
667 if (offset
+ count
> bank
->size
)
668 return ERROR_FLASH_DST_OUT_OF_BANK
;
670 dst_min_alignment
= at91sam7_info
->pagesize
;
672 if (offset
% dst_min_alignment
)
674 WARNING("offset 0x%x breaks required alignment 0x%x", offset
, dst_min_alignment
);
675 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
678 if (offset
+ count
> bank
->size
)
679 return ERROR_FLASH_DST_OUT_OF_BANK
;
681 if (at91sam7_info
->cidr_arch
== 0)
682 return ERROR_FLASH_BANK_NOT_PROBED
;
684 first_page
= offset
/dst_min_alignment
;
685 last_page
= CEIL(offset
+ count
, dst_min_alignment
);
687 DEBUG("first_page: %i, last_page: %i, count %i", first_page
, last_page
, count
);
689 /* Configure the flash controller timing */
690 at91sam7_read_clock_info(bank
);
691 at91sam7_set_flash_mode(bank
,FMR_TIMING_FLASH
);
693 for (pagen
=first_page
; pagen
<last_page
; pagen
++) {
694 if (bytes_remaining
<dst_min_alignment
)
695 count
= bytes_remaining
;
697 count
= dst_min_alignment
;
698 bytes_remaining
-= count
;
700 /* Write one block to the PageWriteBuffer */
701 buffer_pos
= (pagen
-first_page
)*dst_min_alignment
;
702 wcount
= CEIL(count
,4);
703 target
->type
->write_memory(target
, bank
->base
, 4, wcount
, buffer
+buffer_pos
);
705 /* Send Write Page command to Flash Controller */
706 if (at91sam7_flash_command(bank
, WP
, pagen
) != ERROR_OK
)
708 return ERROR_FLASH_OPERATION_FAILED
;
710 DEBUG("Write page number:%i", pagen
);
717 int at91sam7_probe(struct flash_bank_s
*bank
)
719 /* we can't probe on an at91sam7
720 * if this is an at91sam7, it has the configured flash
722 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
724 if (at91sam7_info
->cidr
== 0)
726 at91sam7_read_part_info(bank
);
729 if (at91sam7_info
->cidr
== 0)
731 WARNING("Cannot identify target as an AT91SAM");
732 return ERROR_FLASH_OPERATION_FAILED
;
738 int at91sam7_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
)
741 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
743 at91sam7_read_part_info(bank
);
745 if (at91sam7_info
->cidr
== 0)
747 printed
= snprintf(buf
, buf_size
, "Cannot identify target as an AT91SAM\n");
750 return ERROR_FLASH_OPERATION_FAILED
;
753 printed
= snprintf(buf
, buf_size
, "\nat91sam7 information: Chip is %s\n",at91sam7_info
->target_name
);
757 printed
= snprintf(buf
, buf_size
, "cidr: 0x%8.8x, arch: 0x%4.4x, eproc: %s, version:0x%3.3x, flashsize: 0x%8.8x\n", at91sam7_info
->cidr
, at91sam7_info
->cidr_arch
, EPROC
[at91sam7_info
->cidr_eproc
], at91sam7_info
->cidr_version
, bank
->size
);
761 printed
= snprintf(buf
, buf_size
, "master clock(estimated): %ikHz \n", at91sam7_info
->mck_freq
/ 1000);
765 if (at91sam7_info
->num_lockbits
>0) {
766 printed
= snprintf(buf
, buf_size
, "pagesize: %i, lockbits: %i 0x%4.4x, pages in lock region: %i \n", at91sam7_info
->pagesize
, at91sam7_info
->num_lockbits
, at91sam7_info
->lockbits
,at91sam7_info
->num_pages
/at91sam7_info
->num_lockbits
);
771 printed
= snprintf(buf
, buf_size
, "securitybit: %i, nvmbits: 0x%1.1x\n", at91sam7_info
->securitybit
, at91sam7_info
->nvmbits
);
779 * On AT91SAM7S: When the gpnmv bits are set with
780 * > at91sam7 gpnvm 0 bitnr set
781 * the changes are not visible in the flash controller status register MC_FSR
782 * until the processor has been reset.
783 * On the Olimex board this requires a power cycle.
784 * Note that the AT91SAM7S has the following errata (doc6175.pdf sec 14.1.3):
785 * The maximum number of write/erase cycles for Non Volatile Memory bits is 100. This includes
786 * Lock Bits (LOCKx), General Purpose NVM bits (GPNVMx) and the Security Bit.
788 int at91sam7_handle_gpnvm_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
795 at91sam7_flash_bank_t
*at91sam7_info
;
799 command_print(cmd_ctx
, "at91sam7 gpnvm <num> <bit> <set|clear>");
803 bank
= get_flash_bank_by_num(strtoul(args
[0], NULL
, 0));
809 command_print(cmd_ctx
, "flash bank '#%s' is out of bounds", args
[0]);
813 at91sam7_info
= bank
->driver_priv
;
815 if (at91sam7_info
->target
->state
!= TARGET_HALTED
)
817 return ERROR_TARGET_NOT_HALTED
;
820 if (at91sam7_info
->cidr
== 0)
822 at91sam7_read_part_info(bank
);
825 if (at91sam7_info
->cidr
== 0)
827 WARNING("Cannot identify target as an AT91SAM");
828 return ERROR_FLASH_OPERATION_FAILED
;
831 if ((bit
<0) || (at91sam7_info
->num_nvmbits
<= bit
))
833 command_print(cmd_ctx
, "gpnvm bit '#%s' is out of bounds for target %s", args
[1],at91sam7_info
->target_name
);
837 if (strcmp(value
, "set") == 0)
841 else if (strcmp(value
, "clear") == 0)
847 command_print(cmd_ctx
, "usage: at91sam7 gpnvm <num> <bit> <set|clear>");
851 /* Configure the flash controller timing */
852 at91sam7_read_clock_info(bank
);
853 at91sam7_set_flash_mode(bank
,FMR_TIMING_NVBITS
);
855 if (at91sam7_flash_command(bank
, flashcmd
, (u16
)(bit
)) != ERROR_OK
)
857 return ERROR_FLASH_OPERATION_FAILED
;
860 status
= at91sam7_get_flash_status(bank
);
861 DEBUG("at91sam7_handle_gpnvm_command: cmd 0x%x, value 0x%x, status 0x%x \n",flashcmd
,bit
,status
);
862 at91sam7_info
->nvmbits
= (status
>>8)&((1<<at91sam7_info
->num_nvmbits
)-1);
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