1 /***************************************************************************
2 * Copyright (C) 2008 by Kevin McGuire *
3 * Copyright (C) 2008 by Marcel Wijlaars *
4 * Copyright (C) 2009 by Michael Ashton *
6 * This program is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License, or *
9 * (at your option) any later version. *
11 * This program is distributed in the hope that it will be useful, *
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14 * GNU General Public License for more details. *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program; if not, write to the *
18 * Free Software Foundation, Inc., *
19 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
20 ***************************************************************************/
27 #include <helper/binarybuffer.h>
28 #include <helper/time_support.h>
29 #include <target/algorithm.h>
30 #include <target/arm.h>
32 static int aduc702x_build_sector_list(struct flash_bank
*bank
);
33 static int aduc702x_check_flash_completion(struct target
*target
, unsigned int timeout_ms
);
34 static int aduc702x_set_write_enable(struct target
*target
, int enable
);
36 #define ADUC702x_FLASH 0xfffff800
37 #define ADUC702x_FLASH_FEESTA (0*4)
38 #define ADUC702x_FLASH_FEEMOD (1*4)
39 #define ADUC702x_FLASH_FEECON (2*4)
40 #define ADUC702x_FLASH_FEEDAT (3*4)
41 #define ADUC702x_FLASH_FEEADR (4*4)
42 #define ADUC702x_FLASH_FEESIGN (5*4)
43 #define ADUC702x_FLASH_FEEPRO (6*4)
44 #define ADUC702x_FLASH_FEEHIDE (7*4)
46 struct aduc702x_flash_bank
{
47 struct working_area
*write_algorithm
;
50 /* flash bank aduc702x 0 0 0 0 <target#>
51 * The ADC7019-28 devices all have the same flash layout */
52 FLASH_BANK_COMMAND_HANDLER(aduc702x_flash_bank_command
)
54 struct aduc702x_flash_bank
*nbank
;
56 nbank
= malloc(sizeof(struct aduc702x_flash_bank
));
59 bank
->size
= 0xF800; /* top 4k not accessible */
60 bank
->driver_priv
= nbank
;
62 aduc702x_build_sector_list(bank
);
67 static int aduc702x_build_sector_list(struct flash_bank
*bank
)
69 /* aduc7026_struct flash_bank *aduc7026_info = bank->driver_priv; */
74 /* sector size is 512 */
75 bank
->num_sectors
= bank
->size
/ 512;
76 bank
->sectors
= malloc(sizeof(struct flash_sector
) * bank
->num_sectors
);
77 for (i
= 0; i
< bank
->num_sectors
; ++i
) {
78 bank
->sectors
[i
].offset
= offset
;
79 bank
->sectors
[i
].size
= 512;
80 offset
+= bank
->sectors
[i
].size
;
81 bank
->sectors
[i
].is_erased
= -1;
82 bank
->sectors
[i
].is_protected
= 0;
88 static int aduc702x_protect_check(struct flash_bank
*bank
)
90 printf("aduc702x_protect_check not implemented yet.\n");
94 static int aduc702x_erase(struct flash_bank
*bank
, int first
, int last
)
100 struct target
*target
= bank
->target
;
102 aduc702x_set_write_enable(target
, 1);
105 if (((first
| last
) == 0) || ((first
== 0) && (last
>= bank
->num_sectors
))) {
106 LOG_DEBUG("performing mass erase.");
107 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEDAT
, 0x3cff);
108 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEADR
, 0xffc3);
109 target_write_u8(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEECON
, 0x06);
111 if (aduc702x_check_flash_completion(target
, 3500) != ERROR_OK
) {
112 LOG_ERROR("mass erase failed");
113 aduc702x_set_write_enable(target
, 0);
114 return ERROR_FLASH_OPERATION_FAILED
;
117 LOG_DEBUG("mass erase successful.");
122 count
= last
- first
+ 1;
123 for (x
= 0; x
< count
; ++x
) {
124 adr
= bank
->base
+ ((first
+ x
) * 512);
126 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEADR
, adr
);
127 target_write_u8(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEECON
, 0x05);
129 if (aduc702x_check_flash_completion(target
, 50) != ERROR_OK
) {
130 LOG_ERROR("failed to erase sector at address 0x%08lX", adr
);
131 aduc702x_set_write_enable(target
, 0);
132 return ERROR_FLASH_SECTOR_NOT_ERASED
;
135 LOG_DEBUG("erased sector at address 0x%08lX", adr
);
139 aduc702x_set_write_enable(target
, 0);
144 static int aduc702x_protect(struct flash_bank
*bank
, int set
, int first
, int last
)
146 printf("aduc702x_protect not implemented yet.\n");
147 return ERROR_FLASH_OPERATION_FAILED
;
150 /* If this fn returns ERROR_TARGET_RESOURCE_NOT_AVAILABLE, then the caller can fall
151 * back to another mechanism that does not require onboard RAM
153 * Caller should not check for other return values specifically
155 static int aduc702x_write_block(struct flash_bank
*bank
,
160 struct aduc702x_flash_bank
*aduc702x_info
= bank
->driver_priv
;
161 struct target
*target
= bank
->target
;
162 uint32_t buffer_size
= 7000;
163 struct working_area
*source
;
164 uint32_t address
= bank
->base
+ offset
;
165 struct reg_param reg_params
[6];
166 struct arm_algorithm arm_algo
;
167 int retval
= ERROR_OK
;
169 if (((count
%2) != 0) || ((offset
%2) != 0)) {
170 LOG_ERROR("write block must be multiple of two bytes in offset & length");
176 r0 - address of source data (absolute)
177 r1 - number of halfwords to be copied
178 r2 - start address in flash (offset from beginning of flash memory)
180 r4 - base address of flash controller (0xFFFFF800)
185 r6 - set to 2, used to write flash command
188 static const uint32_t aduc702x_flash_write_code
[] = {
190 0xe3a05008, /* mov r5, #8 ; 0x8 */
191 0xe5845004, /* str r5, [r4, #4] */
192 0xe3a06002, /* mov r6, #2 ; 0x2 */
194 0xe1c421b0, /* strh r2, [r4, #16] */
195 0xe0d050b2, /* ldrh r5, [r0], #2 */
196 0xe1c450bc, /* strh r5, [r4, #12] */
197 0xe5c46008, /* strb r6, [r4, #8] */
198 /* <wait_complete>: */
199 0xe1d430b0, /* ldrh r3, [r4] */
200 0xe3130004, /* tst r3, #4 ; 0x4 */
201 0x1afffffc, /* bne 1001c <wait_complete> */
202 0xe2822002, /* add r2, r2, #2 ; 0x2 */
203 0xe2511001, /* subs r1, r1, #1 ; 0x1 */
204 0x0a000001, /* beq 1003c <done> */
205 0xe3130001, /* tst r3, #1 ; 0x1 */
206 0x1afffff3, /* bne 1000c <next> */
208 0xeafffffe /* b 1003c <done> */
211 /* flash write code */
212 if (target_alloc_working_area(target
, sizeof(aduc702x_flash_write_code
),
213 &aduc702x_info
->write_algorithm
) != ERROR_OK
) {
214 LOG_WARNING("no working area available, can't do block memory writes");
215 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
218 retval
= target_write_buffer(target
, aduc702x_info
->write_algorithm
->address
,
219 sizeof(aduc702x_flash_write_code
), (uint8_t *)aduc702x_flash_write_code
);
220 if (retval
!= ERROR_OK
)
224 while (target_alloc_working_area_try(target
, buffer_size
, &source
) != ERROR_OK
) {
226 if (buffer_size
<= 256) {
227 /* if we already allocated the writing code, but failed to get a buffer,
228 *free the algorithm */
229 if (aduc702x_info
->write_algorithm
)
230 target_free_working_area(target
, aduc702x_info
->write_algorithm
);
232 LOG_WARNING("no large enough working area available, can't do block memory writes");
233 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
237 arm_algo
.common_magic
= ARM_COMMON_MAGIC
;
238 arm_algo
.core_mode
= ARM_MODE_SVC
;
239 arm_algo
.core_state
= ARM_STATE_ARM
;
241 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
242 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
243 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
);
244 init_reg_param(®_params
[3], "r3", 32, PARAM_IN
);
245 init_reg_param(®_params
[4], "r4", 32, PARAM_OUT
);
248 uint32_t thisrun_count
= (count
> buffer_size
) ? buffer_size
: count
;
250 retval
= target_write_buffer(target
, source
->address
, thisrun_count
, buffer
);
251 if (retval
!= ERROR_OK
)
254 buf_set_u32(reg_params
[0].value
, 0, 32, source
->address
);
255 buf_set_u32(reg_params
[1].value
, 0, 32, thisrun_count
/2);
256 buf_set_u32(reg_params
[2].value
, 0, 32, address
);
257 buf_set_u32(reg_params
[4].value
, 0, 32, 0xFFFFF800);
259 retval
= target_run_algorithm(target
, 0, NULL
, 5,
260 reg_params
, aduc702x_info
->write_algorithm
->address
,
261 aduc702x_info
->write_algorithm
->address
+
262 sizeof(aduc702x_flash_write_code
) - 4,
264 if (retval
!= ERROR_OK
) {
265 LOG_ERROR("error executing aduc702x flash write algorithm");
269 if ((buf_get_u32(reg_params
[3].value
, 0, 32) & 1) != 1) {
270 /* FIX!!!! what does this mean??? replace w/sensible error message */
271 LOG_ERROR("aduc702x detected error writing flash");
276 buffer
+= thisrun_count
;
277 address
+= thisrun_count
;
278 count
-= thisrun_count
;
281 target_free_working_area(target
, source
);
282 target_free_working_area(target
, aduc702x_info
->write_algorithm
);
284 destroy_reg_param(®_params
[0]);
285 destroy_reg_param(®_params
[1]);
286 destroy_reg_param(®_params
[2]);
287 destroy_reg_param(®_params
[3]);
288 destroy_reg_param(®_params
[4]);
293 /* All-JTAG, single-access method. Very slow. Used only if there is no
294 * working area available. */
295 static int aduc702x_write_single(struct flash_bank
*bank
,
302 struct target
*target
= bank
->target
;
304 aduc702x_set_write_enable(target
, 1);
306 for (x
= 0; x
< count
; x
+= 2) {
307 /* FEEADR = address */
308 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEADR
, offset
+ x
);
311 if ((x
+ 1) == count
) {
313 target_read_u8(target
, offset
+ x
+ 1, &b
);
317 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEDAT
, buffer
[x
] | (b
<< 8));
319 /* do single-write command */
320 target_write_u8(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEECON
, 0x02);
322 if (aduc702x_check_flash_completion(target
, 1) != ERROR_OK
) {
323 LOG_ERROR("single write failed for address 0x%08lX",
324 (unsigned long)(offset
+ x
));
325 aduc702x_set_write_enable(target
, 0);
326 return ERROR_FLASH_OPERATION_FAILED
;
330 LOG_DEBUG("wrote %d bytes at address 0x%08lX", (int)count
, (unsigned long)(offset
+ x
));
332 aduc702x_set_write_enable(target
, 0);
337 static int aduc702x_write(struct flash_bank
*bank
, uint8_t *buffer
, uint32_t offset
, uint32_t count
)
341 /* try using a block write */
342 retval
= aduc702x_write_block(bank
, buffer
, offset
, count
);
343 if (retval
!= ERROR_OK
) {
344 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
) {
345 /* if block write failed (no sufficient working area),
346 * use normal (slow) JTAG method */
347 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
349 retval
= aduc702x_write_single(bank
, buffer
, offset
, count
);
350 if (retval
!= ERROR_OK
) {
351 LOG_ERROR("slow write failed");
352 return ERROR_FLASH_OPERATION_FAILED
;
360 static int aduc702x_probe(struct flash_bank
*bank
)
365 static int aduc702x_info(struct flash_bank
*bank
, char *buf
, int buf_size
)
367 snprintf(buf
, buf_size
, "aduc702x flash driver info");
372 * enable = 1 enables writes & erases, 0 disables them */
373 static int aduc702x_set_write_enable(struct target
*target
, int enable
)
375 /* don't bother to preserve int enable bit here */
376 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEMOD
, enable
? 8 : 0);
381 /* wait up to timeout_ms for controller to not be busy,
382 * then check whether the command passed or failed.
384 * this function sleeps 1ms between checks (after the first one),
385 * so in some cases may slow things down without a usleep after the first read */
386 static int aduc702x_check_flash_completion(struct target
*target
, unsigned int timeout_ms
)
390 long long endtime
= timeval_ms() + timeout_ms
;
392 target_read_u8(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEESTA
, &v
);
396 if (timeval_ms() >= endtime
)
402 /* if a command is ignored, both the success and fail bits may be 0 */
403 else if ((v
& 3) == 0)
409 struct flash_driver aduc702x_flash
= {
411 .flash_bank_command
= aduc702x_flash_bank_command
,
412 .erase
= aduc702x_erase
,
413 .protect
= aduc702x_protect
,
414 .write
= aduc702x_write
,
415 .read
= default_flash_read
,
416 .probe
= aduc702x_probe
,
417 .auto_probe
= aduc702x_probe
,
418 .erase_check
= default_flash_blank_check
,
419 .protect_check
= aduc702x_protect_check
,
420 .info
= aduc702x_info
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