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 ***************************************************************************/
28 #include "binarybuffer.h"
29 #include "time_support.h"
32 static int aduc702x_build_sector_list(struct flash_bank_s *bank);
33 static int aduc702x_check_flash_completion(target_t* target, unsigned int timeout_ms);
34 static int aduc702x_set_write_enable(target_t *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)
55 } ADUC702x_FLASH_MMIO;
59 working_area_t *write_algorithm;
60 } aduc702x_flash_bank_t;
62 /* flash bank aduc702x 0 0 0 0 <target#>
63 * The ADC7019-28 devices all have the same flash layout */
64 static int aduc702x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
66 aduc702x_flash_bank_t *nbank;
68 nbank = malloc(sizeof(aduc702x_flash_bank_t));
71 bank->size = 0xF800; // top 4k not accessible
72 bank->driver_priv = nbank;
74 aduc702x_build_sector_list(bank);
79 static int aduc702x_build_sector_list(struct flash_bank_s *bank)
81 //aduc7026_flash_bank_t *aduc7026_info = bank->driver_priv;
87 bank->num_sectors = bank->size / 512;
88 bank->sectors = malloc(sizeof(flash_sector_t) * bank->num_sectors);
89 for (i = 0; i < bank->num_sectors; ++i)
91 bank->sectors[i].offset = offset;
92 bank->sectors[i].size = 512;
93 offset += bank->sectors[i].size;
94 bank->sectors[i].is_erased = -1;
95 bank->sectors[i].is_protected = 0;
101 static int aduc702x_protect_check(struct flash_bank_s *bank)
103 printf("aduc702x_protect_check not implemented yet.\n");
107 static int aduc702x_erase(struct flash_bank_s *bank, int first, int last)
113 target_t *target = bank->target;
115 aduc702x_set_write_enable(target, 1);
118 if (((first | last) == 0) || ((first == 0) && (last >= bank->num_sectors))) {
119 LOG_DEBUG("performing mass erase.\n");
120 target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEDAT, 0x3cff);
121 target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEADR, 0xffc3);
122 target_write_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEECON, 0x06);
124 if (aduc702x_check_flash_completion(target, 3500) != ERROR_OK)
126 LOG_ERROR("mass erase failed\n");
127 aduc702x_set_write_enable(target, 0);
128 return ERROR_FLASH_OPERATION_FAILED;
131 LOG_DEBUG("mass erase successful.\n");
136 count = last - first + 1;
137 for (x = 0; x < count; ++x)
139 adr = bank->base + ((first + x) * 512);
141 target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEADR, adr);
142 target_write_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEECON, 0x05);
144 if (aduc702x_check_flash_completion(target, 50) != ERROR_OK)
146 LOG_ERROR("failed to erase sector at address 0x%08lX\n", adr);
147 aduc702x_set_write_enable(target, 0);
148 return ERROR_FLASH_SECTOR_NOT_ERASED;
151 LOG_DEBUG("erased sector at address 0x%08lX\n", adr);
155 aduc702x_set_write_enable(target, 0);
160 static int aduc702x_protect(struct flash_bank_s *bank, int set, int first, int last)
162 printf("aduc702x_protect not implemented yet.\n");
163 return ERROR_FLASH_OPERATION_FAILED;
166 /* If this fn returns ERROR_TARGET_RESOURCE_NOT_AVAILABLE, then the caller can fall
167 * back to another mechanism that does not require onboard RAM
169 * Caller should not check for other return values specifically
171 static int aduc702x_write_block(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
173 aduc702x_flash_bank_t *aduc702x_info = bank->driver_priv;
174 target_t *target = bank->target;
175 uint32_t buffer_size = 7000;
176 working_area_t *source;
177 uint32_t address = bank->base + offset;
178 reg_param_t reg_params[6];
179 armv4_5_algorithm_t armv4_5_info;
180 int retval = ERROR_OK;
182 if (((count%2)!=0)||((offset%2)!=0))
184 LOG_ERROR("write block must be multiple of two bytes in offset & length");
190 r0 - address of source data (absolute)
191 r1 - number of halfwords to be copied
192 r2 - start address in flash (offset from beginning of flash memory)
194 r4 - base address of flash controller (0xFFFFF800)
199 r6 - set to 2, used to write flash command
202 uint32_t aduc702x_flash_write_code[] = {
204 0xe3a05008, // mov r5, #8 ; 0x8
205 0xe5845004, // str r5, [r4, #4]
206 0xe3a06002, // mov r6, #2 ; 0x2
208 0xe1c421b0, // strh r2, [r4, #16]
209 0xe0d050b2, // ldrh r5, [r0], #2
210 0xe1c450bc, // strh r5, [r4, #12]
211 0xe5c46008, // strb r6, [r4, #8]
213 0xe1d430b0, // ldrh r3, [r4]
214 0xe3130004, // tst r3, #4 ; 0x4
215 0x1afffffc, // bne 1001c <wait_complete>
216 0xe2822002, // add r2, r2, #2 ; 0x2
217 0xe2511001, // subs r1, r1, #1 ; 0x1
218 0x0a000001, // beq 1003c <done>
219 0xe3130001, // tst r3, #1 ; 0x1
220 0x1afffff3, // bne 1000c <next>
222 0xeafffffe // b 1003c <done>
225 /* flash write code */
226 if (target_alloc_working_area(target, sizeof(aduc702x_flash_write_code),
227 &aduc702x_info->write_algorithm) != ERROR_OK)
229 LOG_WARNING("no working area available, can't do block memory writes");
230 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
233 retval=target_write_buffer(target, aduc702x_info->write_algorithm->address,
234 sizeof(aduc702x_flash_write_code), (uint8_t*)aduc702x_flash_write_code);
235 if (retval!=ERROR_OK)
241 while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
244 if (buffer_size <= 256)
246 /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
247 if (aduc702x_info->write_algorithm)
248 target_free_working_area(target, aduc702x_info->write_algorithm);
250 LOG_WARNING("no large enough working area available, can't do block memory writes");
251 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
255 armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
256 armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
257 armv4_5_info.core_state = ARMV4_5_STATE_ARM;
259 init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
260 init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
261 init_reg_param(®_params[2], "r2", 32, PARAM_OUT);
262 init_reg_param(®_params[3], "r3", 32, PARAM_IN);
263 init_reg_param(®_params[4], "r4", 32, PARAM_OUT);
267 uint32_t thisrun_count = (count > buffer_size) ? buffer_size : count;
269 retval=target_write_buffer(target, source->address, thisrun_count, buffer);
270 if (retval!=ERROR_OK)
275 buf_set_u32(reg_params[0].value, 0, 32, source->address);
276 buf_set_u32(reg_params[1].value, 0, 32, thisrun_count/2);
277 buf_set_u32(reg_params[2].value, 0, 32, address);
278 buf_set_u32(reg_params[4].value, 0, 32, 0xFFFFF800);
280 if ((retval = target_run_algorithm(target, 0, NULL, 5,
281 reg_params, aduc702x_info->write_algorithm->address,
282 aduc702x_info->write_algorithm->address + sizeof(aduc702x_flash_write_code) - 4,
283 10000, &armv4_5_info)) != ERROR_OK)
285 LOG_ERROR("error executing aduc702x flash write algorithm");
289 if ((buf_get_u32(reg_params[3].value, 0, 32) & 1) != 1)
291 /* FIX!!!! what does this mean??? replace w/sensible error message */
292 LOG_ERROR("aduc702x detected error writing flash");
297 buffer += thisrun_count;
298 address += thisrun_count;
299 count -= thisrun_count;
302 target_free_working_area(target, source);
303 target_free_working_area(target, aduc702x_info->write_algorithm);
305 destroy_reg_param(®_params[0]);
306 destroy_reg_param(®_params[1]);
307 destroy_reg_param(®_params[2]);
308 destroy_reg_param(®_params[3]);
309 destroy_reg_param(®_params[4]);
314 /* All-JTAG, single-access method. Very slow. Used only if there is no
315 * working area available. */
316 static int aduc702x_write_single(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
320 target_t *target = bank->target;
322 aduc702x_set_write_enable(target, 1);
324 for (x = 0; x < count; x += 2) {
326 target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEADR, offset + x);
329 if ((x + 1) == count)
332 target_read_u8(target, offset + x + 1, &b);
337 target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEDAT, buffer[x] | (b << 8));
339 // do single-write command
340 target_write_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEECON, 0x02);
342 if (aduc702x_check_flash_completion(target, 1) != ERROR_OK)
344 LOG_ERROR("single write failed for address 0x%08lX\n", (unsigned long)(offset + x));
345 aduc702x_set_write_enable(target, 0);
346 return ERROR_FLASH_OPERATION_FAILED;
350 LOG_DEBUG("wrote %d bytes at address 0x%08lX\n", (int)count, (unsigned long)(offset + x));
352 aduc702x_set_write_enable(target, 0);
357 int aduc702x_write(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
361 /* try using a block write */
362 if ((retval = aduc702x_write_block(bank, buffer, offset, count)) != ERROR_OK)
364 if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
366 /* if block write failed (no sufficient working area),
367 * use normal (slow) JTAG method */
368 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
370 if ((retval = aduc702x_write_single(bank, buffer, offset, count)) != ERROR_OK)
372 LOG_ERROR("slow write failed");
373 return ERROR_FLASH_OPERATION_FAILED;
381 static int aduc702x_probe(struct flash_bank_s *bank)
386 static int aduc702x_info(struct flash_bank_s *bank, char *buf, int buf_size)
388 snprintf(buf, buf_size, "aduc702x flash driver info");
393 * enable = 1 enables writes & erases, 0 disables them */
394 static int aduc702x_set_write_enable(target_t *target, int enable)
396 // don't bother to preserve int enable bit here
397 target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEMOD, enable ? 8 : 0);
402 /* wait up to timeout_ms for controller to not be busy,
403 * then check whether the command passed or failed.
405 * this function sleeps 1ms between checks (after the first one),
406 * so in some cases may slow things down without a usleep after the first read */
407 static int aduc702x_check_flash_completion(target_t* target, unsigned int timeout_ms)
411 long long endtime = timeval_ms() + timeout_ms;
413 target_read_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEESTA, &v);
414 if ((v & 4) == 0) break;
416 if (timeval_ms() >= endtime) break;
419 if (v & 2) return ERROR_FAIL;
420 // if a command is ignored, both the success and fail bits may be 0
421 else if ((v & 3) == 0) return ERROR_FAIL;
422 else return ERROR_OK;
425 flash_driver_t aduc702x_flash = {
427 .flash_bank_command = &aduc702x_flash_bank_command,
428 .erase = &aduc702x_erase,
429 .protect = &aduc702x_protect,
430 .write = &aduc702x_write,
431 .probe = &aduc702x_probe,
432 .auto_probe = &aduc702x_probe,
433 .erase_check = &default_flash_blank_check,
434 .protect_check = &aduc702x_protect_check,
435 .info = &aduc702x_info