1 // SPDX-License-Identifier: GPL-2.0-or-later
3 /***************************************************************************
4 * Copyright (C) 2008 by Kevin McGuire *
5 * Copyright (C) 2008 by Marcel Wijlaars *
6 * Copyright (C) 2009 by Michael Ashton *
7 ***************************************************************************/
14 #include <helper/binarybuffer.h>
15 #include <helper/time_support.h>
16 #include <target/algorithm.h>
17 #include <target/arm.h>
19 static int aduc702x_build_sector_list(struct flash_bank
*bank
);
20 static int aduc702x_check_flash_completion(struct target
*target
, unsigned int timeout_ms
);
21 static int aduc702x_set_write_enable(struct target
*target
, int enable
);
23 #define ADUC702X_FLASH 0xfffff800
24 #define ADUC702X_FLASH_FEESTA (0*4)
25 #define ADUC702X_FLASH_FEEMOD (1*4)
26 #define ADUC702X_FLASH_FEECON (2*4)
27 #define ADUC702X_FLASH_FEEDAT (3*4)
28 #define ADUC702X_FLASH_FEEADR (4*4)
29 #define ADUC702X_FLASH_FEESIGN (5*4)
30 #define ADUC702X_FLASH_FEEPRO (6*4)
31 #define ADUC702X_FLASH_FEEHIDE (7*4)
33 /* flash bank aduc702x 0 0 0 0 <target#>
34 * The ADC7019-28 devices all have the same flash layout */
35 FLASH_BANK_COMMAND_HANDLER(aduc702x_flash_bank_command
)
38 bank
->size
= 0xF800; /* top 4k not accessible */
40 aduc702x_build_sector_list(bank
);
45 static int aduc702x_build_sector_list(struct flash_bank
*bank
)
47 /* aduc7026_struct flash_bank *aduc7026_info = bank->driver_priv; */
51 /* sector size is 512 */
52 bank
->num_sectors
= bank
->size
/ 512;
53 bank
->sectors
= malloc(sizeof(struct flash_sector
) * bank
->num_sectors
);
54 for (unsigned int i
= 0; i
< bank
->num_sectors
; ++i
) {
55 bank
->sectors
[i
].offset
= offset
;
56 bank
->sectors
[i
].size
= 512;
57 offset
+= bank
->sectors
[i
].size
;
58 bank
->sectors
[i
].is_erased
= -1;
59 bank
->sectors
[i
].is_protected
= 0;
65 static int aduc702x_erase(struct flash_bank
*bank
, unsigned int first
,
72 struct target
*target
= bank
->target
;
74 aduc702x_set_write_enable(target
, 1);
77 if (((first
| last
) == 0) || ((first
== 0) && (last
>= bank
->num_sectors
))) {
78 LOG_DEBUG("performing mass erase.");
79 target_write_u16(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEEDAT
, 0x3cff);
80 target_write_u16(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEEADR
, 0xffc3);
81 target_write_u8(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEECON
, 0x06);
83 if (aduc702x_check_flash_completion(target
, 3500) != ERROR_OK
) {
84 LOG_ERROR("mass erase failed");
85 aduc702x_set_write_enable(target
, 0);
86 return ERROR_FLASH_OPERATION_FAILED
;
89 LOG_DEBUG("mass erase successful.");
94 count
= last
- first
+ 1;
95 for (x
= 0; x
< count
; ++x
) {
96 adr
= bank
->base
+ ((first
+ x
) * 512);
98 target_write_u16(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEEADR
, adr
);
99 target_write_u8(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEECON
, 0x05);
101 if (aduc702x_check_flash_completion(target
, 50) != ERROR_OK
) {
102 LOG_ERROR("failed to erase sector at address 0x%08lX", adr
);
103 aduc702x_set_write_enable(target
, 0);
104 return ERROR_FLASH_SECTOR_NOT_ERASED
;
107 LOG_DEBUG("erased sector at address 0x%08lX", adr
);
111 aduc702x_set_write_enable(target
, 0);
116 /* If this fn returns ERROR_TARGET_RESOURCE_NOT_AVAILABLE, then the caller can fall
117 * back to another mechanism that does not require onboard RAM
119 * Caller should not check for other return values specifically
121 static int aduc702x_write_block(struct flash_bank
*bank
,
122 const uint8_t *buffer
,
126 struct target
*target
= bank
->target
;
127 uint32_t buffer_size
= 7000;
128 struct working_area
*write_algorithm
;
129 struct working_area
*source
;
130 uint32_t address
= bank
->base
+ offset
;
131 struct reg_param reg_params
[6];
132 struct arm_algorithm arm_algo
;
133 int retval
= ERROR_OK
;
135 if (((count
%2) != 0) || ((offset
%2) != 0)) {
136 LOG_ERROR("write block must be multiple of two bytes in offset & length");
142 r0 - address of source data (absolute)
143 r1 - number of halfwords to be copied
144 r2 - start address in flash (offset from beginning of flash memory)
146 r4 - base address of flash controller (0xFFFFF800)
151 r6 - set to 2, used to write flash command
154 static const uint32_t aduc702x_flash_write_code
[] = {
156 0xe3a05008, /* mov r5, #8 ; 0x8 */
157 0xe5845004, /* str r5, [r4, #4] */
158 0xe3a06002, /* mov r6, #2 ; 0x2 */
160 0xe1c421b0, /* strh r2, [r4, #16] */
161 0xe0d050b2, /* ldrh r5, [r0], #2 */
162 0xe1c450bc, /* strh r5, [r4, #12] */
163 0xe5c46008, /* strb r6, [r4, #8] */
164 /* <wait_complete>: */
165 0xe1d430b0, /* ldrh r3, [r4] */
166 0xe3130004, /* tst r3, #4 ; 0x4 */
167 0x1afffffc, /* bne 1001c <wait_complete> */
168 0xe2822002, /* add r2, r2, #2 ; 0x2 */
169 0xe2511001, /* subs r1, r1, #1 ; 0x1 */
170 0x0a000001, /* beq 1003c <done> */
171 0xe3130001, /* tst r3, #1 ; 0x1 */
172 0x1afffff3, /* bne 1000c <next> */
174 0xeafffffe /* b 1003c <done> */
177 /* flash write code */
178 if (target_alloc_working_area(target
, sizeof(aduc702x_flash_write_code
),
179 &write_algorithm
) != ERROR_OK
) {
180 LOG_WARNING("no working area available, can't do block memory writes");
181 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
184 uint8_t code
[sizeof(aduc702x_flash_write_code
)];
185 target_buffer_set_u32_array(target
, code
, ARRAY_SIZE(aduc702x_flash_write_code
),
186 aduc702x_flash_write_code
);
187 retval
= target_write_buffer(target
, write_algorithm
->address
, sizeof(code
), code
);
188 if (retval
!= ERROR_OK
)
192 while (target_alloc_working_area_try(target
, buffer_size
, &source
) != ERROR_OK
) {
194 if (buffer_size
<= 256) {
195 /* we already allocated the writing code, but failed to get a buffer,
196 *free the algorithm */
197 target_free_working_area(target
, write_algorithm
);
199 LOG_WARNING("no large enough working area available, can't do block memory writes");
200 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
204 arm_algo
.common_magic
= ARM_COMMON_MAGIC
;
205 arm_algo
.core_mode
= ARM_MODE_SVC
;
206 arm_algo
.core_state
= ARM_STATE_ARM
;
208 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
209 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
210 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
);
211 init_reg_param(®_params
[3], "r3", 32, PARAM_IN
);
212 init_reg_param(®_params
[4], "r4", 32, PARAM_OUT
);
215 uint32_t thisrun_count
= (count
> buffer_size
) ? buffer_size
: count
;
217 retval
= target_write_buffer(target
, source
->address
, thisrun_count
, buffer
);
218 if (retval
!= ERROR_OK
)
221 buf_set_u32(reg_params
[0].value
, 0, 32, source
->address
);
222 buf_set_u32(reg_params
[1].value
, 0, 32, thisrun_count
/2);
223 buf_set_u32(reg_params
[2].value
, 0, 32, address
);
224 buf_set_u32(reg_params
[4].value
, 0, 32, 0xFFFFF800);
226 retval
= target_run_algorithm(target
, 0, NULL
, 5,
227 reg_params
, write_algorithm
->address
,
228 write_algorithm
->address
+
229 sizeof(aduc702x_flash_write_code
) - 4,
231 if (retval
!= ERROR_OK
) {
232 LOG_ERROR("error executing aduc702x flash write algorithm");
236 if ((buf_get_u32(reg_params
[3].value
, 0, 32) & 1) != 1) {
237 /* FIX!!!! what does this mean??? replace w/sensible error message */
238 LOG_ERROR("aduc702x detected error writing flash");
243 buffer
+= thisrun_count
;
244 address
+= thisrun_count
;
245 count
-= thisrun_count
;
248 target_free_working_area(target
, source
);
249 target_free_working_area(target
, write_algorithm
);
251 destroy_reg_param(®_params
[0]);
252 destroy_reg_param(®_params
[1]);
253 destroy_reg_param(®_params
[2]);
254 destroy_reg_param(®_params
[3]);
255 destroy_reg_param(®_params
[4]);
260 /* All-JTAG, single-access method. Very slow. Used only if there is no
261 * working area available. */
262 static int aduc702x_write_single(struct flash_bank
*bank
,
263 const uint8_t *buffer
,
269 struct target
*target
= bank
->target
;
271 aduc702x_set_write_enable(target
, 1);
273 for (x
= 0; x
< count
; x
+= 2) {
274 /* FEEADR = address */
275 target_write_u16(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEEADR
, offset
+ x
);
278 if ((x
+ 1) == count
) {
280 target_read_u8(target
, offset
+ x
+ 1, &b
);
284 target_write_u16(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEEDAT
, buffer
[x
] | (b
<< 8));
286 /* do single-write command */
287 target_write_u8(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEECON
, 0x02);
289 if (aduc702x_check_flash_completion(target
, 1) != ERROR_OK
) {
290 LOG_ERROR("single write failed for address 0x%08lX",
291 (unsigned long)(offset
+ x
));
292 aduc702x_set_write_enable(target
, 0);
293 return ERROR_FLASH_OPERATION_FAILED
;
297 LOG_DEBUG("wrote %d bytes at address 0x%08lX", (int)count
, (unsigned long)(offset
+ x
));
299 aduc702x_set_write_enable(target
, 0);
304 static int aduc702x_write(struct flash_bank
*bank
, const uint8_t *buffer
, uint32_t offset
, uint32_t count
)
308 /* try using a block write */
309 retval
= aduc702x_write_block(bank
, buffer
, offset
, count
);
310 if (retval
!= ERROR_OK
) {
311 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
) {
312 /* if block write failed (no sufficient working area),
313 * use normal (slow) JTAG method */
314 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
316 retval
= aduc702x_write_single(bank
, buffer
, offset
, count
);
317 if (retval
!= ERROR_OK
) {
318 LOG_ERROR("slow write failed");
319 return ERROR_FLASH_OPERATION_FAILED
;
327 static int aduc702x_probe(struct flash_bank
*bank
)
333 * enable = 1 enables writes & erases, 0 disables them */
334 static int aduc702x_set_write_enable(struct target
*target
, int enable
)
336 /* don't bother to preserve int enable bit here */
337 target_write_u16(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEEMOD
, enable
? 8 : 0);
342 /* wait up to timeout_ms for controller to not be busy,
343 * then check whether the command passed or failed.
345 * this function sleeps 1ms between checks (after the first one),
346 * so in some cases may slow things down without a usleep after the first read */
347 static int aduc702x_check_flash_completion(struct target
*target
, unsigned int timeout_ms
)
351 int64_t endtime
= timeval_ms() + timeout_ms
;
353 target_read_u8(target
, ADUC702X_FLASH
+ ADUC702X_FLASH_FEESTA
, &v
);
357 if (timeval_ms() >= endtime
)
363 /* if a command is ignored, both the success and fail bits may be 0 */
364 else if ((v
& 3) == 0)
370 const struct flash_driver aduc702x_flash
= {
372 .flash_bank_command
= aduc702x_flash_bank_command
,
373 .erase
= aduc702x_erase
,
374 .write
= aduc702x_write
,
375 .read
= default_flash_read
,
376 .probe
= aduc702x_probe
,
377 .auto_probe
= aduc702x_probe
,
378 .erase_check
= default_flash_blank_check
,
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