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_auto_probe(struct flash_bank_s
*bank
);
61 int at91sam7_erase_check(struct flash_bank_s
*bank
);
62 int at91sam7_protect_check(struct flash_bank_s
*bank
);
63 int at91sam7_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
);
65 u32
at91sam7_get_flash_status(flash_bank_t
*bank
, u8 flashplane
);
66 void at91sam7_set_flash_mode(flash_bank_t
*bank
, u8 flashplane
, int mode
);
67 u32
at91sam7_wait_status_busy(flash_bank_t
*bank
, u8 flashplane
, u32 waitbits
, int timeout
);
68 int at91sam7_flash_command(struct flash_bank_s
*bank
, u8 flashplane
, u8 cmd
, u16 pagen
);
69 int at91sam7_handle_gpnvm_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
71 flash_driver_t at91sam7_flash
=
74 .register_commands
= at91sam7_register_commands
,
75 .flash_bank_command
= at91sam7_flash_bank_command
,
76 .erase
= at91sam7_erase
,
77 .protect
= at91sam7_protect
,
78 .write
= at91sam7_write
,
79 .probe
= at91sam7_probe
,
80 .auto_probe
= at91sam7_auto_probe
,
81 .erase_check
= at91sam7_erase_check
,
82 .protect_check
= at91sam7_protect_check
,
86 u32 MC_FMR
[4] = { 0xFFFFFF60, 0xFFFFFF70, 0xFFFFFF80, 0xFFFFFF90 };
87 u32 MC_FCR
[4] = { 0xFFFFFF64, 0xFFFFFF74, 0xFFFFFF84, 0xFFFFFF94 };
88 u32 MC_FSR
[4] = { 0xFFFFFF68, 0xFFFFFF78, 0xFFFFFF88, 0xFFFFFF98 };
90 char * EPROC
[8]= {"Unknown","ARM946-E","ARM7TDMI","Unknown","ARM920T","ARM926EJ-S","Unknown","Unknown"};
104 0x100000, /* 1024K */
106 0x200000, /* 2048K */
129 int at91sam7_register_commands(struct command_context_s
*cmd_ctx
)
131 command_t
*at91sam7_cmd
= register_command(cmd_ctx
, NULL
, "at91sam7", NULL
, COMMAND_ANY
, NULL
);
132 register_command(cmd_ctx
, at91sam7_cmd
, "gpnvm", at91sam7_handle_gpnvm_command
, COMMAND_EXEC
,
133 "at91sam7 gpnvm <num> <bit> set|clear, set or clear at91sam7 gpnvm bit");
138 u32
at91sam7_get_flash_status(flash_bank_t
*bank
, u8 flashplane
)
140 target_t
*target
= bank
->target
;
143 target_read_u32(target
, MC_FSR
[flashplane
], &fsr
);
148 /** Read clock configuration and set at91sam7_info->usec_clocks*/
149 void at91sam7_read_clock_info(flash_bank_t
*bank
)
151 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
152 target_t
*target
= bank
->target
;
153 u32 mckr
, mcfr
, pllr
;
154 unsigned long tmp
= 0, mainfreq
;
157 /* Read main clock freqency register */
158 target_read_u32(target
, CKGR_MCFR
, &mcfr
);
159 /* Read master clock register */
160 target_read_u32(target
, PMC_MCKR
, &mckr
);
161 /* Read Clock Generator PLL Register */
162 target_read_u32(target
, CKGR_PLLR
, &pllr
);
164 at91sam7_info
->mck_valid
= 0;
165 switch (mckr
& PMC_MCKR_CSS
)
167 case 0: /* Slow Clock */
168 at91sam7_info
->mck_valid
= 1;
169 mainfreq
= RC_FREQ
/ 16ul * (mcfr
& 0xffff);
172 case 1: /* Main Clock */
173 if (mcfr
& CKGR_MCFR_MAINRDY
)
175 at91sam7_info
->mck_valid
= 1;
176 mainfreq
= RC_FREQ
/ 16ul * (mcfr
& 0xffff);
181 case 2: /* Reserved */
183 case 3: /* PLL Clock */
184 if (mcfr
& CKGR_MCFR_MAINRDY
)
186 target_read_u32(target
, CKGR_PLLR
, &pllr
);
187 if (!(pllr
& CKGR_PLLR_DIV
))
189 at91sam7_info
->mck_valid
= 1;
190 mainfreq
= RC_FREQ
/ 16ul * (mcfr
& 0xffff);
191 /* Integer arithmetic should have sufficient precision
192 as long as PLL is properly configured. */
193 tmp
= mainfreq
/ (pllr
& CKGR_PLLR_DIV
) *
194 (((pllr
& CKGR_PLLR_MUL
) >> 16) + 1);
199 /* Prescaler adjust */
200 if (((mckr
& PMC_MCKR_PRES
) >> 2) == 7)
201 at91sam7_info
->mck_valid
= 0;
203 at91sam7_info
->mck_freq
= tmp
>> ((mckr
& PMC_MCKR_PRES
) >> 2);
205 /* Forget old flash timing */
206 for (flashplane
= 0; flashplane
<at91sam7_info
->num_planes
; flashplane
++)
208 at91sam7_set_flash_mode(bank
, flashplane
, FMR_TIMING_NONE
);
212 /* Setup the timimg registers for nvbits or normal flash */
213 void at91sam7_set_flash_mode(flash_bank_t
*bank
, u8 flashplane
, int mode
)
215 u32 fmr
, fmcn
= 0, fws
= 0;
216 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
217 target_t
*target
= bank
->target
;
219 if (mode
&& (mode
!= at91sam7_info
->flashmode
[flashplane
]))
221 /* Always round up (ceil) */
222 if (mode
==FMR_TIMING_NVBITS
)
224 if (at91sam7_info
->cidr_arch
== 0x60)
226 /* AT91SAM7A3 uses master clocks in 100 ns */
227 fmcn
= (at91sam7_info
->mck_freq
/10000000ul)+1;
231 /* master clocks in 1uS for ARCH 0x7 types */
232 fmcn
= (at91sam7_info
->mck_freq
/1000000ul)+1;
235 else if (mode
==FMR_TIMING_FLASH
)
236 /* main clocks in 1.5uS */
237 fmcn
= (at91sam7_info
->mck_freq
/666666ul)+1;
239 /* Only allow fmcn=0 if clock period is > 30 us = 33kHz. */
240 if (at91sam7_info
->mck_freq
<= 33333ul)
242 /* Only allow fws=0 if clock frequency is < 30 MHz. */
243 if (at91sam7_info
->mck_freq
> 30000000ul)
246 DEBUG("fmcn[%i]: %i", flashplane
, fmcn
);
247 fmr
= fmcn
<< 16 | fws
<< 8;
248 target_write_u32(target
, MC_FMR
[flashplane
], fmr
);
251 at91sam7_info
->flashmode
[flashplane
] = mode
;
254 u32
at91sam7_wait_status_busy(flash_bank_t
*bank
, u8 flashplane
, u32 waitbits
, int timeout
)
258 while ((!((status
= at91sam7_get_flash_status(bank
,flashplane
)) & waitbits
)) && (timeout
-- > 0))
260 DEBUG("status[%i]: 0x%x", flashplane
, status
);
264 DEBUG("status[%i]: 0x%x", flashplane
, status
);
268 ERROR("status register: 0x%x", status
);
270 ERROR("Lock Error Bit Detected, Operation Abort");
272 ERROR("Invalid command and/or bad keyword, Operation Abort");
274 ERROR("Security Bit Set, Operation Abort");
281 /* Send one command to the AT91SAM flash controller */
282 int at91sam7_flash_command(struct flash_bank_s
*bank
, u8 flashplane
, u8 cmd
, u16 pagen
)
285 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
286 target_t
*target
= bank
->target
;
288 fcr
= (0x5A<<24) | ((pagen
&0x3FF)<<8) | cmd
;
289 target_write_u32(target
, MC_FCR
[flashplane
], fcr
);
290 DEBUG("Flash command: 0x%x, flashplane: %i, pagenumber:%u", fcr
, flashplane
, pagen
);
292 if ((at91sam7_info
->cidr_arch
== 0x60)&&((cmd
==SLB
)|(cmd
==CLB
)))
294 /* Lock bit manipulation on AT91SAM7A3 waits for FC_FSR bit 1, EOL */
295 if (at91sam7_wait_status_busy(bank
, flashplane
, MC_FSR_EOL
, 10)&0x0C)
297 return ERROR_FLASH_OPERATION_FAILED
;
302 if (at91sam7_wait_status_busy(bank
, flashplane
, MC_FSR_FRDY
, 10)&0x0C)
304 return ERROR_FLASH_OPERATION_FAILED
;
309 /* Read device id register, main clock frequency register and fill in driver info structure */
310 int at91sam7_read_part_info(struct flash_bank_s
*bank
)
312 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
313 target_t
*target
= bank
->target
;
317 if (bank
->target
->state
!= TARGET_HALTED
)
319 return ERROR_TARGET_NOT_HALTED
;
322 /* Read and parse chip identification register */
323 target_read_u32(target
, DBGU_CIDR
, &cidr
);
327 WARNING("Cannot identify target as an AT91SAM");
328 return ERROR_FLASH_OPERATION_FAILED
;
331 at91sam7_info
->cidr
= cidr
;
332 at91sam7_info
->cidr_ext
= (cidr
>>31)&0x0001;
333 at91sam7_info
->cidr_nvptyp
= (cidr
>>28)&0x0007;
334 at91sam7_info
->cidr_arch
= (cidr
>>20)&0x00FF;
335 at91sam7_info
->cidr_sramsiz
= (cidr
>>16)&0x000F;
336 at91sam7_info
->cidr_nvpsiz2
= (cidr
>>12)&0x000F;
337 at91sam7_info
->cidr_nvpsiz
= (cidr
>>8)&0x000F;
338 at91sam7_info
->cidr_eproc
= (cidr
>>5)&0x0007;
339 at91sam7_info
->cidr_version
= cidr
&0x001F;
340 bank
->size
= NVPSIZ
[at91sam7_info
->cidr_nvpsiz
];
341 at91sam7_info
->target_name
= "Unknown";
343 /* Support just for bulk erase of a single flash plane, whole device if flash size <= 256k */
344 if (NVPSIZ
[at91sam7_info
->cidr_nvpsiz
]<0x80000) /* Flash size less than 512K, one flash plane */
346 bank
->num_sectors
= 1;
347 bank
->sectors
= malloc(sizeof(flash_sector_t
));
348 bank
->sectors
[0].offset
= 0;
349 bank
->sectors
[0].size
= bank
->size
;
350 bank
->sectors
[0].is_erased
= -1;
351 bank
->sectors
[0].is_protected
= -1;
353 else /* Flash size 512K or larger, several flash planes */
355 bank
->num_sectors
= NVPSIZ
[at91sam7_info
->cidr_nvpsiz
]/0x40000;
356 bank
->sectors
= malloc(bank
->num_sectors
*sizeof(flash_sector_t
));
357 for (sectornum
=0; sectornum
<bank
->num_sectors
; sectornum
++)
359 bank
->sectors
[sectornum
].offset
= sectornum
*0x40000;
360 bank
->sectors
[sectornum
].size
= 0x40000;
361 bank
->sectors
[sectornum
].is_erased
= -1;
362 bank
->sectors
[sectornum
].is_protected
= -1;
368 DEBUG("nvptyp: 0x%3.3x, arch: 0x%4.4x", at91sam7_info
->cidr_nvptyp
, at91sam7_info
->cidr_arch
);
370 /* Read main and master clock freqency register */
371 at91sam7_read_clock_info(bank
);
373 at91sam7_info
->num_planes
= 1;
374 status
= at91sam7_get_flash_status(bank
, 0);
375 at91sam7_info
->securitybit
= (status
>>4)&0x01;
376 at91sam7_protect_check(bank
); /* TODO Check the protect check */
378 if (at91sam7_info
->cidr_arch
== 0x70 )
380 at91sam7_info
->num_nvmbits
= 2;
381 at91sam7_info
->nvmbits
= (status
>>8)&0x03;
382 bank
->base
= 0x100000;
384 if (bank
->size
==0x80000) /* AT91SAM7S512 */
386 at91sam7_info
->target_name
= "AT91SAM7S512";
387 at91sam7_info
->num_planes
= 2;
388 if (at91sam7_info
->num_planes
!= bank
->num_sectors
)
389 WARNING("Internal error: Number of flash planes and erase sectors does not match, please report");;
390 at91sam7_info
->num_lockbits
= 2*16;
391 at91sam7_info
->pagesize
= 256;
392 at91sam7_info
->pages_in_lockregion
= 64;
393 at91sam7_info
->num_pages
= 2*16*64;
395 if (bank
->size
==0x40000) /* AT91SAM7S256 */
397 at91sam7_info
->target_name
= "AT91SAM7S256";
398 at91sam7_info
->num_lockbits
= 16;
399 at91sam7_info
->pagesize
= 256;
400 at91sam7_info
->pages_in_lockregion
= 64;
401 at91sam7_info
->num_pages
= 16*64;
403 if (bank
->size
==0x20000) /* AT91SAM7S128 */
405 at91sam7_info
->target_name
= "AT91SAM7S128";
406 at91sam7_info
->num_lockbits
= 8;
407 at91sam7_info
->pagesize
= 256;
408 at91sam7_info
->pages_in_lockregion
= 64;
409 at91sam7_info
->num_pages
= 8*64;
411 if (bank
->size
==0x10000) /* AT91SAM7S64 */
413 at91sam7_info
->target_name
= "AT91SAM7S64";
414 at91sam7_info
->num_lockbits
= 16;
415 at91sam7_info
->pagesize
= 128;
416 at91sam7_info
->pages_in_lockregion
= 32;
417 at91sam7_info
->num_pages
= 16*32;
419 if (bank
->size
==0x08000) /* AT91SAM7S321/32 */
421 at91sam7_info
->target_name
= "AT91SAM7S321/32";
422 at91sam7_info
->num_lockbits
= 8;
423 at91sam7_info
->pagesize
= 128;
424 at91sam7_info
->pages_in_lockregion
= 32;
425 at91sam7_info
->num_pages
= 8*32;
431 if (at91sam7_info
->cidr_arch
== 0x71 )
433 at91sam7_info
->num_nvmbits
= 3;
434 at91sam7_info
->nvmbits
= (status
>>8)&0x07;
435 bank
->base
= 0x100000;
437 if (bank
->size
==0x80000) /* AT91SAM7XC512 */
439 at91sam7_info
->target_name
= "AT91SAM7XC512";
440 at91sam7_info
->num_planes
= 2;
441 if (at91sam7_info
->num_planes
!= bank
->num_sectors
)
442 WARNING("Internal error: Number of flash planes and erase sectors does not match, please report");;
443 at91sam7_info
->num_lockbits
= 2*16;
444 at91sam7_info
->pagesize
= 256;
445 at91sam7_info
->pages_in_lockregion
= 64;
446 at91sam7_info
->num_pages
= 2*16*64;
448 if (bank
->size
==0x40000) /* AT91SAM7XC256 */
450 at91sam7_info
->target_name
= "AT91SAM7XC256";
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) /* AT91SAM7XC128 */
458 at91sam7_info
->target_name
= "AT91SAM7XC128";
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
== 0x72 )
470 at91sam7_info
->num_nvmbits
= 2;
471 at91sam7_info
->nvmbits
= (status
>>8)&0x03;
472 bank
->base
= 0x100000;
474 if (bank
->size
==0x80000) /* AT91SAM7SE512 */
476 at91sam7_info
->target_name
= "AT91SAM7SE512";
477 at91sam7_info
->num_planes
= 2;
478 if (at91sam7_info
->num_planes
!= bank
->num_sectors
)
479 WARNING("Internal error: Number of flash planes and erase sectors does not match, please report");;
480 at91sam7_info
->num_lockbits
= 32;
481 at91sam7_info
->pagesize
= 256;
482 at91sam7_info
->pages_in_lockregion
= 64;
483 at91sam7_info
->num_pages
= 32*64;
485 if (bank
->size
==0x40000)
487 at91sam7_info
->target_name
= "AT91SAM7SE256";
488 at91sam7_info
->num_lockbits
= 16;
489 at91sam7_info
->pagesize
= 256;
490 at91sam7_info
->pages_in_lockregion
= 64;
491 at91sam7_info
->num_pages
= 16*64;
493 if (bank
->size
==0x08000)
495 at91sam7_info
->target_name
= "AT91SAM7SE32";
496 at91sam7_info
->num_lockbits
= 8;
497 at91sam7_info
->pagesize
= 128;
498 at91sam7_info
->pages_in_lockregion
= 32;
499 at91sam7_info
->num_pages
= 8*32;
505 if (at91sam7_info
->cidr_arch
== 0x75 )
507 at91sam7_info
->num_nvmbits
= 3;
508 at91sam7_info
->nvmbits
= (status
>>8)&0x07;
509 bank
->base
= 0x100000;
511 if (bank
->size
==0x80000) /* AT91SAM7X512 */
513 at91sam7_info
->target_name
= "AT91SAM7X512";
514 at91sam7_info
->num_planes
= 2;
515 if (at91sam7_info
->num_planes
!= bank
->num_sectors
)
516 WARNING("Internal error: Number of flash planes and erase sectors does not match, please report");;
517 at91sam7_info
->num_lockbits
= 32;
518 at91sam7_info
->pagesize
= 256;
519 at91sam7_info
->pages_in_lockregion
= 64;
520 at91sam7_info
->num_pages
= 2*16*64;
521 DEBUG("Support for AT91SAM7X512 is experimental in this version!");
523 if (bank
->size
==0x40000) /* AT91SAM7X256 */
525 at91sam7_info
->target_name
= "AT91SAM7X256";
526 at91sam7_info
->num_lockbits
= 16;
527 at91sam7_info
->pagesize
= 256;
528 at91sam7_info
->pages_in_lockregion
= 64;
529 at91sam7_info
->num_pages
= 16*64;
531 if (bank
->size
==0x20000) /* AT91SAM7X128 */
533 at91sam7_info
->target_name
= "AT91SAM7X128";
534 at91sam7_info
->num_lockbits
= 8;
535 at91sam7_info
->pagesize
= 256;
536 at91sam7_info
->pages_in_lockregion
= 64;
537 at91sam7_info
->num_pages
= 8*64;
543 if (at91sam7_info
->cidr_arch
== 0x60 )
545 at91sam7_info
->num_nvmbits
= 3;
546 at91sam7_info
->nvmbits
= (status
>>8)&0x07;
547 bank
->base
= 0x100000;
550 if (bank
->size
== 0x40000) /* AT91SAM7A3 */
552 at91sam7_info
->target_name
= "AT91SAM7A3";
553 at91sam7_info
->num_lockbits
= 16;
554 at91sam7_info
->pagesize
= 256;
555 at91sam7_info
->pages_in_lockregion
= 16;
556 at91sam7_info
->num_pages
= 16*64;
561 WARNING("at91sam7 flash only tested for AT91SAM7Sxx series");
566 int at91sam7_erase_check(struct flash_bank_s
*bank
)
568 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
570 if (!at91sam7_info
->working_area_size
)
580 int at91sam7_protect_check(struct flash_bank_s
*bank
)
585 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
587 if (at91sam7_info
->cidr
== 0)
589 at91sam7_read_part_info(bank
);
592 if (at91sam7_info
->cidr
== 0)
594 WARNING("Cannot identify target as an AT91SAM");
595 return ERROR_FLASH_OPERATION_FAILED
;
598 for (flashplane
=0;flashplane
<at91sam7_info
->num_planes
;flashplane
++)
600 status
= at91sam7_get_flash_status(bank
, flashplane
);
601 at91sam7_info
->lockbits
[flashplane
] = (status
>> 16);
607 /* flash_bank at91sam7 0 0 0 0 <target#>
609 int at91sam7_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
)
611 at91sam7_flash_bank_t
*at91sam7_info
;
616 WARNING("incomplete flash_bank at91sam7 configuration");
617 return ERROR_FLASH_BANK_INVALID
;
620 at91sam7_info
= malloc(sizeof(at91sam7_flash_bank_t
));
621 bank
->driver_priv
= at91sam7_info
;
622 at91sam7_info
->probed
= 0;
624 /* part wasn't probed for info yet */
625 at91sam7_info
->cidr
= 0;
627 at91sam7_info
->flashmode
[i
]=0;
632 int at91sam7_erase(struct flash_bank_s
*bank
, int first
, int last
)
634 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
637 if (bank
->target
->state
!= TARGET_HALTED
)
639 return ERROR_TARGET_NOT_HALTED
;
642 if (at91sam7_info
->cidr
== 0)
644 at91sam7_read_part_info(bank
);
647 if (at91sam7_info
->cidr
== 0)
649 WARNING("Cannot identify target as an AT91SAM");
650 return ERROR_FLASH_OPERATION_FAILED
;
653 if ((first
< 0) || (last
< first
) || (last
>= bank
->num_sectors
))
655 if ((first
== 0) && (last
== (at91sam7_info
->num_lockbits
-1)))
657 WARNING("Sector numbers based on lockbit count, probably a deprecated script");
658 last
= bank
->num_sectors
-1;
660 else return ERROR_FLASH_SECTOR_INVALID
;
663 /* Configure the flash controller timing */
664 at91sam7_read_clock_info(bank
);
665 for (flashplane
= first
; flashplane
<=last
; flashplane
++)
667 /* Configure the flash controller timing */
668 at91sam7_set_flash_mode(bank
, flashplane
, FMR_TIMING_FLASH
);
669 if (at91sam7_flash_command(bank
, flashplane
, EA
, 0) != ERROR_OK
)
671 return ERROR_FLASH_OPERATION_FAILED
;
678 int at91sam7_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
)
684 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
686 if (bank
->target
->state
!= TARGET_HALTED
)
688 return ERROR_TARGET_NOT_HALTED
;
691 if ((first
< 0) || (last
< first
) || (last
>= at91sam7_info
->num_lockbits
))
693 return ERROR_FLASH_SECTOR_INVALID
;
696 if (at91sam7_info
->cidr
== 0)
698 at91sam7_read_part_info(bank
);
701 if (at91sam7_info
->cidr
== 0)
703 WARNING("Cannot identify target as an AT91SAM");
704 return ERROR_FLASH_OPERATION_FAILED
;
707 at91sam7_read_clock_info(bank
);
709 for (lockregion
=first
;lockregion
<=last
;lockregion
++)
711 pagen
= lockregion
*at91sam7_info
->pages_in_lockregion
;
712 flashplane
= (pagen
>>10)&0x03;
713 /* Configure the flash controller timing */
714 at91sam7_set_flash_mode(bank
, flashplane
, FMR_TIMING_NVBITS
);
721 if (at91sam7_flash_command(bank
, flashplane
, cmd
, pagen
) != ERROR_OK
)
723 return ERROR_FLASH_OPERATION_FAILED
;
727 at91sam7_protect_check(bank
);
733 int at91sam7_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
)
735 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
736 target_t
*target
= bank
->target
;
737 u32 dst_min_alignment
, wcount
, bytes_remaining
= count
;
738 u32 first_page
, last_page
, pagen
, buffer_pos
;
741 if (bank
->target
->state
!= TARGET_HALTED
)
743 return ERROR_TARGET_NOT_HALTED
;
746 if (at91sam7_info
->cidr
== 0)
748 at91sam7_read_part_info(bank
);
751 if (at91sam7_info
->cidr
== 0)
753 WARNING("Cannot identify target as an AT91SAM");
754 return ERROR_FLASH_OPERATION_FAILED
;
757 if (offset
+ count
> bank
->size
)
758 return ERROR_FLASH_DST_OUT_OF_BANK
;
760 dst_min_alignment
= at91sam7_info
->pagesize
;
762 if (offset
% dst_min_alignment
)
764 WARNING("offset 0x%x breaks required alignment 0x%x", offset
, dst_min_alignment
);
765 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
768 if (at91sam7_info
->cidr_arch
== 0)
769 return ERROR_FLASH_BANK_NOT_PROBED
;
771 first_page
= offset
/dst_min_alignment
;
772 last_page
= CEIL(offset
+ count
, dst_min_alignment
);
774 DEBUG("first_page: %i, last_page: %i, count %i", first_page
, last_page
, count
);
776 at91sam7_read_clock_info(bank
);
778 for (pagen
=first_page
; pagen
<last_page
; pagen
++)
780 if (bytes_remaining
<dst_min_alignment
)
781 count
= bytes_remaining
;
783 count
= dst_min_alignment
;
784 bytes_remaining
-= count
;
786 /* Write one block to the PageWriteBuffer */
787 buffer_pos
= (pagen
-first_page
)*dst_min_alignment
;
788 wcount
= CEIL(count
,4);
789 target
->type
->write_memory(target
, bank
->base
+pagen
*dst_min_alignment
, 4, wcount
, buffer
+buffer_pos
);
790 flashplane
= (pagen
>>10)&0x3;
792 /* Configure the flash controller timing */
793 at91sam7_set_flash_mode(bank
, flashplane
, FMR_TIMING_FLASH
);
794 /* Send Write Page command to Flash Controller */
795 if (at91sam7_flash_command(bank
, flashplane
, WP
, pagen
) != ERROR_OK
)
797 return ERROR_FLASH_OPERATION_FAILED
;
799 DEBUG("Write flash plane:%i page number:%i", flashplane
, pagen
);
806 int at91sam7_probe(struct flash_bank_s
*bank
)
808 /* we can't probe on an at91sam7
809 * if this is an at91sam7, it has the configured flash
811 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
812 at91sam7_info
->probed
= 0;
814 if (at91sam7_info
->cidr
== 0)
816 at91sam7_read_part_info(bank
);
819 if (at91sam7_info
->cidr
== 0)
821 WARNING("Cannot identify target as an AT91SAM");
822 return ERROR_FLASH_OPERATION_FAILED
;
825 at91sam7_info
->probed
= 1;
831 int at91sam7_auto_probe(struct flash_bank_s
*bank
)
833 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
834 if (at91sam7_info
->probed
)
836 return at91sam7_probe(bank
);
839 int at91sam7_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
)
841 int printed
, flashplane
;
842 at91sam7_flash_bank_t
*at91sam7_info
= bank
->driver_priv
;
844 at91sam7_read_part_info(bank
);
846 if (at91sam7_info
->cidr
== 0)
848 printed
= snprintf(buf
, buf_size
, "Cannot identify target as an AT91SAM\n");
851 return ERROR_FLASH_OPERATION_FAILED
;
854 printed
= snprintf(buf
, buf_size
, "\nat91sam7 information: Chip is %s\n",at91sam7_info
->target_name
);
858 printed
= snprintf(buf
, buf_size
, "cidr: 0x%8.8x, arch: 0x%4.4x, eproc: %s, version:0x%3.3x, flashsize: 0x%8.8x\n",
859 at91sam7_info
->cidr
, at91sam7_info
->cidr_arch
, EPROC
[at91sam7_info
->cidr_eproc
], at91sam7_info
->cidr_version
, bank
->size
);
863 printed
= snprintf(buf
, buf_size
, "master clock(estimated): %ikHz \n", at91sam7_info
->mck_freq
/ 1000);
867 if (at91sam7_info
->num_planes
>1) {
868 printed
= snprintf(buf
, buf_size
, "flashplanes: %i, pagesize: %i, lock regions: %i, pages in lock region: %i \n",
869 at91sam7_info
->num_planes
, at91sam7_info
->pagesize
, at91sam7_info
->num_lockbits
, at91sam7_info
->num_pages
/at91sam7_info
->num_lockbits
);
872 for (flashplane
=0; flashplane
<at91sam7_info
->num_planes
; flashplane
++)
874 printed
= snprintf(buf
, buf_size
, "lockbits[%i]: 0x%4.4x, ", flashplane
, at91sam7_info
->lockbits
[flashplane
]);
880 if (at91sam7_info
->num_lockbits
>0) {
881 printed
= snprintf(buf
, buf_size
, "pagesize: %i, lockbits: %i 0x%4.4x, pages in lock region: %i \n",
882 at91sam7_info
->pagesize
, at91sam7_info
->num_lockbits
, at91sam7_info
->lockbits
[0], at91sam7_info
->num_pages
/at91sam7_info
->num_lockbits
);
887 printed
= snprintf(buf
, buf_size
, "securitybit: %i, nvmbits: 0x%1.1x\n", at91sam7_info
->securitybit
, at91sam7_info
->nvmbits
);
895 * On AT91SAM7S: When the gpnmv bits are set with
896 * > at91sam7 gpnvm 0 bitnr set
897 * the changes are not visible in the flash controller status register MC_FSR
898 * until the processor has been reset.
899 * On the Olimex board this requires a power cycle.
900 * Note that the AT91SAM7S has the following errata (doc6175.pdf sec 14.1.3):
901 * The maximum number of write/erase cycles for Non Volatile Memory bits is 100. This includes
902 * Lock Bits (LOCKx), General Purpose NVM bits (GPNVMx) and the Security Bit.
904 int at91sam7_handle_gpnvm_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
911 at91sam7_flash_bank_t
*at91sam7_info
;
915 command_print(cmd_ctx
, "at91sam7 gpnvm <num> <bit> <set|clear>");
919 bank
= get_flash_bank_by_num(strtoul(args
[0], NULL
, 0));
925 command_print(cmd_ctx
, "flash bank '#%s' is out of bounds", args
[0]);
929 at91sam7_info
= bank
->driver_priv
;
931 if (bank
->target
->state
!= TARGET_HALTED
)
933 return ERROR_TARGET_NOT_HALTED
;
936 if (at91sam7_info
->cidr
== 0)
938 at91sam7_read_part_info(bank
);
941 if (at91sam7_info
->cidr
== 0)
943 WARNING("Cannot identify target as an AT91SAM");
944 return ERROR_FLASH_OPERATION_FAILED
;
947 if ((bit
<0) || (at91sam7_info
->num_nvmbits
<= bit
))
949 command_print(cmd_ctx
, "gpnvm bit '#%s' is out of bounds for target %s", args
[1],at91sam7_info
->target_name
);
953 if (strcmp(value
, "set") == 0)
957 else if (strcmp(value
, "clear") == 0)
963 command_print(cmd_ctx
, "usage: at91sam7 gpnvm <num> <bit> <set|clear>");
967 /* Configure the flash controller timing */
968 at91sam7_read_clock_info(bank
);
969 at91sam7_set_flash_mode(bank
, 0, FMR_TIMING_NVBITS
);
971 if (at91sam7_flash_command(bank
, 0, flashcmd
, (u16
)(bit
)) != ERROR_OK
)
973 return ERROR_FLASH_OPERATION_FAILED
;
976 status
= at91sam7_get_flash_status(bank
, 0);
977 DEBUG("at91sam7_handle_gpnvm_command: cmd 0x%x, value 0x%x, status 0x%x \n",flashcmd
,bit
,status
);
978 at91sam7_info
->nvmbits
= (status
>>8)&((1<<at91sam7_info
->num_nvmbits
)-1);