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, see <http://www.gnu.org/licenses/>. *
18 ***************************************************************************/
25 #include <helper/binarybuffer.h>
26 #include <helper/time_support.h>
27 #include <target/algorithm.h>
28 #include <target/arm.h>
30 static int aduc702x_build_sector_list(struct flash_bank
*bank
);
31 static int aduc702x_check_flash_completion(struct target
*target
, unsigned int timeout_ms
);
32 static int aduc702x_set_write_enable(struct target
*target
, int enable
);
34 #define ADUC702x_FLASH 0xfffff800
35 #define ADUC702x_FLASH_FEESTA (0*4)
36 #define ADUC702x_FLASH_FEEMOD (1*4)
37 #define ADUC702x_FLASH_FEECON (2*4)
38 #define ADUC702x_FLASH_FEEDAT (3*4)
39 #define ADUC702x_FLASH_FEEADR (4*4)
40 #define ADUC702x_FLASH_FEESIGN (5*4)
41 #define ADUC702x_FLASH_FEEPRO (6*4)
42 #define ADUC702x_FLASH_FEEHIDE (7*4)
44 /* flash bank aduc702x 0 0 0 0 <target#>
45 * The ADC7019-28 devices all have the same flash layout */
46 FLASH_BANK_COMMAND_HANDLER(aduc702x_flash_bank_command
)
49 bank
->size
= 0xF800; /* top 4k not accessible */
51 aduc702x_build_sector_list(bank
);
56 static int aduc702x_build_sector_list(struct flash_bank
*bank
)
58 /* aduc7026_struct flash_bank *aduc7026_info = bank->driver_priv; */
63 /* sector size is 512 */
64 bank
->num_sectors
= bank
->size
/ 512;
65 bank
->sectors
= malloc(sizeof(struct flash_sector
) * bank
->num_sectors
);
66 for (i
= 0; i
< bank
->num_sectors
; ++i
) {
67 bank
->sectors
[i
].offset
= offset
;
68 bank
->sectors
[i
].size
= 512;
69 offset
+= bank
->sectors
[i
].size
;
70 bank
->sectors
[i
].is_erased
= -1;
71 bank
->sectors
[i
].is_protected
= 0;
77 static int aduc702x_protect_check(struct flash_bank
*bank
)
79 printf("aduc702x_protect_check not implemented yet.\n");
83 static int aduc702x_erase(struct flash_bank
*bank
, int first
, int last
)
89 struct target
*target
= bank
->target
;
91 aduc702x_set_write_enable(target
, 1);
94 if (((first
| last
) == 0) || ((first
== 0) && (last
>= bank
->num_sectors
))) {
95 LOG_DEBUG("performing mass erase.");
96 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEDAT
, 0x3cff);
97 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEADR
, 0xffc3);
98 target_write_u8(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEECON
, 0x06);
100 if (aduc702x_check_flash_completion(target
, 3500) != ERROR_OK
) {
101 LOG_ERROR("mass erase failed");
102 aduc702x_set_write_enable(target
, 0);
103 return ERROR_FLASH_OPERATION_FAILED
;
106 LOG_DEBUG("mass erase successful.");
111 count
= last
- first
+ 1;
112 for (x
= 0; x
< count
; ++x
) {
113 adr
= bank
->base
+ ((first
+ x
) * 512);
115 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEADR
, adr
);
116 target_write_u8(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEECON
, 0x05);
118 if (aduc702x_check_flash_completion(target
, 50) != ERROR_OK
) {
119 LOG_ERROR("failed to erase sector at address 0x%08lX", adr
);
120 aduc702x_set_write_enable(target
, 0);
121 return ERROR_FLASH_SECTOR_NOT_ERASED
;
124 LOG_DEBUG("erased sector at address 0x%08lX", adr
);
128 aduc702x_set_write_enable(target
, 0);
133 static int aduc702x_protect(struct flash_bank
*bank
, int set
, int first
, int last
)
135 printf("aduc702x_protect not implemented yet.\n");
136 return ERROR_FLASH_OPERATION_FAILED
;
139 /* If this fn returns ERROR_TARGET_RESOURCE_NOT_AVAILABLE, then the caller can fall
140 * back to another mechanism that does not require onboard RAM
142 * Caller should not check for other return values specifically
144 static int aduc702x_write_block(struct flash_bank
*bank
,
145 const uint8_t *buffer
,
149 struct target
*target
= bank
->target
;
150 uint32_t buffer_size
= 7000;
151 struct working_area
*write_algorithm
;
152 struct working_area
*source
;
153 uint32_t address
= bank
->base
+ offset
;
154 struct reg_param reg_params
[6];
155 struct arm_algorithm arm_algo
;
156 int retval
= ERROR_OK
;
158 if (((count
%2) != 0) || ((offset
%2) != 0)) {
159 LOG_ERROR("write block must be multiple of two bytes in offset & length");
165 r0 - address of source data (absolute)
166 r1 - number of halfwords to be copied
167 r2 - start address in flash (offset from beginning of flash memory)
169 r4 - base address of flash controller (0xFFFFF800)
174 r6 - set to 2, used to write flash command
177 static const uint32_t aduc702x_flash_write_code
[] = {
179 0xe3a05008, /* mov r5, #8 ; 0x8 */
180 0xe5845004, /* str r5, [r4, #4] */
181 0xe3a06002, /* mov r6, #2 ; 0x2 */
183 0xe1c421b0, /* strh r2, [r4, #16] */
184 0xe0d050b2, /* ldrh r5, [r0], #2 */
185 0xe1c450bc, /* strh r5, [r4, #12] */
186 0xe5c46008, /* strb r6, [r4, #8] */
187 /* <wait_complete>: */
188 0xe1d430b0, /* ldrh r3, [r4] */
189 0xe3130004, /* tst r3, #4 ; 0x4 */
190 0x1afffffc, /* bne 1001c <wait_complete> */
191 0xe2822002, /* add r2, r2, #2 ; 0x2 */
192 0xe2511001, /* subs r1, r1, #1 ; 0x1 */
193 0x0a000001, /* beq 1003c <done> */
194 0xe3130001, /* tst r3, #1 ; 0x1 */
195 0x1afffff3, /* bne 1000c <next> */
197 0xeafffffe /* b 1003c <done> */
200 /* flash write code */
201 if (target_alloc_working_area(target
, sizeof(aduc702x_flash_write_code
),
202 &write_algorithm
) != ERROR_OK
) {
203 LOG_WARNING("no working area available, can't do block memory writes");
204 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
207 uint8_t code
[sizeof(aduc702x_flash_write_code
)];
208 target_buffer_set_u32_array(target
, code
, ARRAY_SIZE(aduc702x_flash_write_code
),
209 aduc702x_flash_write_code
);
210 retval
= target_write_buffer(target
, write_algorithm
->address
, sizeof(code
), code
);
211 if (retval
!= ERROR_OK
)
215 while (target_alloc_working_area_try(target
, buffer_size
, &source
) != ERROR_OK
) {
217 if (buffer_size
<= 256) {
218 /* we already allocated the writing code, but failed to get a buffer,
219 *free the algorithm */
220 target_free_working_area(target
, write_algorithm
);
222 LOG_WARNING("no large enough working area available, can't do block memory writes");
223 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
227 arm_algo
.common_magic
= ARM_COMMON_MAGIC
;
228 arm_algo
.core_mode
= ARM_MODE_SVC
;
229 arm_algo
.core_state
= ARM_STATE_ARM
;
231 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
232 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
233 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
);
234 init_reg_param(®_params
[3], "r3", 32, PARAM_IN
);
235 init_reg_param(®_params
[4], "r4", 32, PARAM_OUT
);
238 uint32_t thisrun_count
= (count
> buffer_size
) ? buffer_size
: count
;
240 retval
= target_write_buffer(target
, source
->address
, thisrun_count
, buffer
);
241 if (retval
!= ERROR_OK
)
244 buf_set_u32(reg_params
[0].value
, 0, 32, source
->address
);
245 buf_set_u32(reg_params
[1].value
, 0, 32, thisrun_count
/2);
246 buf_set_u32(reg_params
[2].value
, 0, 32, address
);
247 buf_set_u32(reg_params
[4].value
, 0, 32, 0xFFFFF800);
249 retval
= target_run_algorithm(target
, 0, NULL
, 5,
250 reg_params
, write_algorithm
->address
,
251 write_algorithm
->address
+
252 sizeof(aduc702x_flash_write_code
) - 4,
254 if (retval
!= ERROR_OK
) {
255 LOG_ERROR("error executing aduc702x flash write algorithm");
259 if ((buf_get_u32(reg_params
[3].value
, 0, 32) & 1) != 1) {
260 /* FIX!!!! what does this mean??? replace w/sensible error message */
261 LOG_ERROR("aduc702x detected error writing flash");
266 buffer
+= thisrun_count
;
267 address
+= thisrun_count
;
268 count
-= thisrun_count
;
271 target_free_working_area(target
, source
);
272 target_free_working_area(target
, write_algorithm
);
274 destroy_reg_param(®_params
[0]);
275 destroy_reg_param(®_params
[1]);
276 destroy_reg_param(®_params
[2]);
277 destroy_reg_param(®_params
[3]);
278 destroy_reg_param(®_params
[4]);
283 /* All-JTAG, single-access method. Very slow. Used only if there is no
284 * working area available. */
285 static int aduc702x_write_single(struct flash_bank
*bank
,
286 const uint8_t *buffer
,
292 struct target
*target
= bank
->target
;
294 aduc702x_set_write_enable(target
, 1);
296 for (x
= 0; x
< count
; x
+= 2) {
297 /* FEEADR = address */
298 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEADR
, offset
+ x
);
301 if ((x
+ 1) == count
) {
303 target_read_u8(target
, offset
+ x
+ 1, &b
);
307 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEDAT
, buffer
[x
] | (b
<< 8));
309 /* do single-write command */
310 target_write_u8(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEECON
, 0x02);
312 if (aduc702x_check_flash_completion(target
, 1) != ERROR_OK
) {
313 LOG_ERROR("single write failed for address 0x%08lX",
314 (unsigned long)(offset
+ x
));
315 aduc702x_set_write_enable(target
, 0);
316 return ERROR_FLASH_OPERATION_FAILED
;
320 LOG_DEBUG("wrote %d bytes at address 0x%08lX", (int)count
, (unsigned long)(offset
+ x
));
322 aduc702x_set_write_enable(target
, 0);
327 static int aduc702x_write(struct flash_bank
*bank
, const uint8_t *buffer
, uint32_t offset
, uint32_t count
)
331 /* try using a block write */
332 retval
= aduc702x_write_block(bank
, buffer
, offset
, count
);
333 if (retval
!= ERROR_OK
) {
334 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
) {
335 /* if block write failed (no sufficient working area),
336 * use normal (slow) JTAG method */
337 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
339 retval
= aduc702x_write_single(bank
, buffer
, offset
, count
);
340 if (retval
!= ERROR_OK
) {
341 LOG_ERROR("slow write failed");
342 return ERROR_FLASH_OPERATION_FAILED
;
350 static int aduc702x_probe(struct flash_bank
*bank
)
356 * enable = 1 enables writes & erases, 0 disables them */
357 static int aduc702x_set_write_enable(struct target
*target
, int enable
)
359 /* don't bother to preserve int enable bit here */
360 target_write_u16(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEEMOD
, enable
? 8 : 0);
365 /* wait up to timeout_ms for controller to not be busy,
366 * then check whether the command passed or failed.
368 * this function sleeps 1ms between checks (after the first one),
369 * so in some cases may slow things down without a usleep after the first read */
370 static int aduc702x_check_flash_completion(struct target
*target
, unsigned int timeout_ms
)
374 int64_t endtime
= timeval_ms() + timeout_ms
;
376 target_read_u8(target
, ADUC702x_FLASH
+ ADUC702x_FLASH_FEESTA
, &v
);
380 if (timeval_ms() >= endtime
)
386 /* if a command is ignored, both the success and fail bits may be 0 */
387 else if ((v
& 3) == 0)
393 struct flash_driver aduc702x_flash
= {
395 .flash_bank_command
= aduc702x_flash_bank_command
,
396 .erase
= aduc702x_erase
,
397 .protect
= aduc702x_protect
,
398 .write
= aduc702x_write
,
399 .read
= default_flash_read
,
400 .probe
= aduc702x_probe
,
401 .auto_probe
= aduc702x_probe
,
402 .erase_check
= default_flash_blank_check
,
403 .protect_check
= aduc702x_protect_check
,