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- /***************************************************************************
- * Copyright (C) 2008 by Kevin McGuire *
- * Copyright (C) 2008 by Marcel Wijlaars *
- * Copyright (C) 2009 by Michael Ashton *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
- ***************************************************************************/
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "imp.h"
- #include <helper/binarybuffer.h>
- #include <helper/time_support.h>
- #include <target/algorithm.h>
- #include <target/arm.h>
-
- static int aduc702x_build_sector_list(struct flash_bank *bank);
- static int aduc702x_check_flash_completion(struct target *target, unsigned int timeout_ms);
- static int aduc702x_set_write_enable(struct target *target, int enable);
-
- #define ADUC702x_FLASH 0xfffff800
- #define ADUC702x_FLASH_FEESTA (0*4)
- #define ADUC702x_FLASH_FEEMOD (1*4)
- #define ADUC702x_FLASH_FEECON (2*4)
- #define ADUC702x_FLASH_FEEDAT (3*4)
- #define ADUC702x_FLASH_FEEADR (4*4)
- #define ADUC702x_FLASH_FEESIGN (5*4)
- #define ADUC702x_FLASH_FEEPRO (6*4)
- #define ADUC702x_FLASH_FEEHIDE (7*4)
-
- /* flash bank aduc702x 0 0 0 0 <target#>
- * The ADC7019-28 devices all have the same flash layout */
- FLASH_BANK_COMMAND_HANDLER(aduc702x_flash_bank_command)
- {
- bank->base = 0x80000;
- bank->size = 0xF800; /* top 4k not accessible */
-
- aduc702x_build_sector_list(bank);
-
- return ERROR_OK;
- }
-
- static int aduc702x_build_sector_list(struct flash_bank *bank)
- {
- /* aduc7026_struct flash_bank *aduc7026_info = bank->driver_priv; */
-
- int i = 0;
- uint32_t offset = 0;
-
- /* sector size is 512 */
- bank->num_sectors = bank->size / 512;
- bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
- for (i = 0; i < bank->num_sectors; ++i) {
- bank->sectors[i].offset = offset;
- bank->sectors[i].size = 512;
- offset += bank->sectors[i].size;
- bank->sectors[i].is_erased = -1;
- bank->sectors[i].is_protected = 0;
- }
-
- return ERROR_OK;
- }
-
- static int aduc702x_protect_check(struct flash_bank *bank)
- {
- printf("aduc702x_protect_check not implemented yet.\n");
- return ERROR_OK;
- }
-
- static int aduc702x_erase(struct flash_bank *bank, int first, int last)
- {
- /* int res; */
- int x;
- int count;
- /* uint32_t v; */
- struct target *target = bank->target;
-
- aduc702x_set_write_enable(target, 1);
-
- /* mass erase */
- if (((first | last) == 0) || ((first == 0) && (last >= bank->num_sectors))) {
- LOG_DEBUG("performing mass erase.");
- target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEDAT, 0x3cff);
- target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEADR, 0xffc3);
- target_write_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEECON, 0x06);
-
- if (aduc702x_check_flash_completion(target, 3500) != ERROR_OK) {
- LOG_ERROR("mass erase failed");
- aduc702x_set_write_enable(target, 0);
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- LOG_DEBUG("mass erase successful.");
- return ERROR_OK;
- } else {
- unsigned long adr;
-
- count = last - first + 1;
- for (x = 0; x < count; ++x) {
- adr = bank->base + ((first + x) * 512);
-
- target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEADR, adr);
- target_write_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEECON, 0x05);
-
- if (aduc702x_check_flash_completion(target, 50) != ERROR_OK) {
- LOG_ERROR("failed to erase sector at address 0x%08lX", adr);
- aduc702x_set_write_enable(target, 0);
- return ERROR_FLASH_SECTOR_NOT_ERASED;
- }
-
- LOG_DEBUG("erased sector at address 0x%08lX", adr);
- }
- }
-
- aduc702x_set_write_enable(target, 0);
-
- return ERROR_OK;
- }
-
- static int aduc702x_protect(struct flash_bank *bank, int set, int first, int last)
- {
- printf("aduc702x_protect not implemented yet.\n");
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- /* If this fn returns ERROR_TARGET_RESOURCE_NOT_AVAILABLE, then the caller can fall
- * back to another mechanism that does not require onboard RAM
- *
- * Caller should not check for other return values specifically
- */
- static int aduc702x_write_block(struct flash_bank *bank,
- uint8_t *buffer,
- uint32_t offset,
- uint32_t count)
- {
- struct target *target = bank->target;
- uint32_t buffer_size = 7000;
- struct working_area *write_algorithm;
- struct working_area *source;
- uint32_t address = bank->base + offset;
- struct reg_param reg_params[6];
- struct arm_algorithm arm_algo;
- int retval = ERROR_OK;
-
- if (((count%2) != 0) || ((offset%2) != 0)) {
- LOG_ERROR("write block must be multiple of two bytes in offset & length");
- return ERROR_FAIL;
- }
-
- /* parameters:
-
- r0 - address of source data (absolute)
- r1 - number of halfwords to be copied
- r2 - start address in flash (offset from beginning of flash memory)
- r3 - exit code
- r4 - base address of flash controller (0xFFFFF800)
-
- registers:
-
- r5 - scratch
- r6 - set to 2, used to write flash command
-
- */
- static const uint32_t aduc702x_flash_write_code[] = {
- /* <_start>: */
- 0xe3a05008, /* mov r5, #8 ; 0x8 */
- 0xe5845004, /* str r5, [r4, #4] */
- 0xe3a06002, /* mov r6, #2 ; 0x2 */
- /* <next>: */
- 0xe1c421b0, /* strh r2, [r4, #16] */
- 0xe0d050b2, /* ldrh r5, [r0], #2 */
- 0xe1c450bc, /* strh r5, [r4, #12] */
- 0xe5c46008, /* strb r6, [r4, #8] */
- /* <wait_complete>: */
- 0xe1d430b0, /* ldrh r3, [r4] */
- 0xe3130004, /* tst r3, #4 ; 0x4 */
- 0x1afffffc, /* bne 1001c <wait_complete> */
- 0xe2822002, /* add r2, r2, #2 ; 0x2 */
- 0xe2511001, /* subs r1, r1, #1 ; 0x1 */
- 0x0a000001, /* beq 1003c <done> */
- 0xe3130001, /* tst r3, #1 ; 0x1 */
- 0x1afffff3, /* bne 1000c <next> */
- /* <done>: */
- 0xeafffffe /* b 1003c <done> */
- };
-
- /* flash write code */
- if (target_alloc_working_area(target, sizeof(aduc702x_flash_write_code),
- &write_algorithm) != ERROR_OK) {
- LOG_WARNING("no working area available, can't do block memory writes");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
-
- retval = target_write_buffer(target, write_algorithm->address,
- sizeof(aduc702x_flash_write_code), (uint8_t *)aduc702x_flash_write_code);
- if (retval != ERROR_OK)
- return retval;
-
- /* memory buffer */
- while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) {
- buffer_size /= 2;
- if (buffer_size <= 256) {
- /* we already allocated the writing code, but failed to get a buffer,
- *free the algorithm */
- target_free_working_area(target, write_algorithm);
-
- LOG_WARNING("no large enough working area available, can't do block memory writes");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
- }
-
- arm_algo.common_magic = ARM_COMMON_MAGIC;
- arm_algo.core_mode = ARM_MODE_SVC;
- arm_algo.core_state = ARM_STATE_ARM;
-
- init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
- init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
- init_reg_param(®_params[2], "r2", 32, PARAM_OUT);
- init_reg_param(®_params[3], "r3", 32, PARAM_IN);
- init_reg_param(®_params[4], "r4", 32, PARAM_OUT);
-
- while (count > 0) {
- uint32_t thisrun_count = (count > buffer_size) ? buffer_size : count;
-
- retval = target_write_buffer(target, source->address, thisrun_count, buffer);
- if (retval != ERROR_OK)
- break;
-
- buf_set_u32(reg_params[0].value, 0, 32, source->address);
- buf_set_u32(reg_params[1].value, 0, 32, thisrun_count/2);
- buf_set_u32(reg_params[2].value, 0, 32, address);
- buf_set_u32(reg_params[4].value, 0, 32, 0xFFFFF800);
-
- retval = target_run_algorithm(target, 0, NULL, 5,
- reg_params, write_algorithm->address,
- write_algorithm->address +
- sizeof(aduc702x_flash_write_code) - 4,
- 10000, &arm_algo);
- if (retval != ERROR_OK) {
- LOG_ERROR("error executing aduc702x flash write algorithm");
- break;
- }
-
- if ((buf_get_u32(reg_params[3].value, 0, 32) & 1) != 1) {
- /* FIX!!!! what does this mean??? replace w/sensible error message */
- LOG_ERROR("aduc702x detected error writing flash");
- retval = ERROR_FAIL;
- break;
- }
-
- buffer += thisrun_count;
- address += thisrun_count;
- count -= thisrun_count;
- }
-
- target_free_working_area(target, source);
- target_free_working_area(target, write_algorithm);
-
- destroy_reg_param(®_params[0]);
- destroy_reg_param(®_params[1]);
- destroy_reg_param(®_params[2]);
- destroy_reg_param(®_params[3]);
- destroy_reg_param(®_params[4]);
-
- return retval;
- }
-
- /* All-JTAG, single-access method. Very slow. Used only if there is no
- * working area available. */
- static int aduc702x_write_single(struct flash_bank *bank,
- uint8_t *buffer,
- uint32_t offset,
- uint32_t count)
- {
- uint32_t x;
- uint8_t b;
- struct target *target = bank->target;
-
- aduc702x_set_write_enable(target, 1);
-
- for (x = 0; x < count; x += 2) {
- /* FEEADR = address */
- target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEADR, offset + x);
-
- /* set up data */
- if ((x + 1) == count) {
- /* last byte */
- target_read_u8(target, offset + x + 1, &b);
- } else
- b = buffer[x + 1];
-
- target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEDAT, buffer[x] | (b << 8));
-
- /* do single-write command */
- target_write_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEECON, 0x02);
-
- if (aduc702x_check_flash_completion(target, 1) != ERROR_OK) {
- LOG_ERROR("single write failed for address 0x%08lX",
- (unsigned long)(offset + x));
- aduc702x_set_write_enable(target, 0);
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- }
- LOG_DEBUG("wrote %d bytes at address 0x%08lX", (int)count, (unsigned long)(offset + x));
-
- aduc702x_set_write_enable(target, 0);
-
- return ERROR_OK;
- }
-
- static int aduc702x_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
- {
- int retval;
-
- /* try using a block write */
- retval = aduc702x_write_block(bank, buffer, offset, count);
- if (retval != ERROR_OK) {
- if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
- /* if block write failed (no sufficient working area),
- * use normal (slow) JTAG method */
- LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
-
- retval = aduc702x_write_single(bank, buffer, offset, count);
- if (retval != ERROR_OK) {
- LOG_ERROR("slow write failed");
- return ERROR_FLASH_OPERATION_FAILED;
- }
- }
- }
-
- return retval;
- }
-
- static int aduc702x_probe(struct flash_bank *bank)
- {
- return ERROR_OK;
- }
-
- static int aduc702x_info(struct flash_bank *bank, char *buf, int buf_size)
- {
- snprintf(buf, buf_size, "aduc702x flash driver info");
- return ERROR_OK;
- }
-
- /* sets FEEMOD bit 3
- * enable = 1 enables writes & erases, 0 disables them */
- static int aduc702x_set_write_enable(struct target *target, int enable)
- {
- /* don't bother to preserve int enable bit here */
- target_write_u16(target, ADUC702x_FLASH + ADUC702x_FLASH_FEEMOD, enable ? 8 : 0);
-
- return ERROR_OK;
- }
-
- /* wait up to timeout_ms for controller to not be busy,
- * then check whether the command passed or failed.
- *
- * this function sleeps 1ms between checks (after the first one),
- * so in some cases may slow things down without a usleep after the first read */
- static int aduc702x_check_flash_completion(struct target *target, unsigned int timeout_ms)
- {
- uint8_t v = 4;
-
- long long endtime = timeval_ms() + timeout_ms;
- while (1) {
- target_read_u8(target, ADUC702x_FLASH + ADUC702x_FLASH_FEESTA, &v);
- if ((v & 4) == 0)
- break;
- alive_sleep(1);
- if (timeval_ms() >= endtime)
- break;
- }
-
- if (v & 2)
- return ERROR_FAIL;
- /* if a command is ignored, both the success and fail bits may be 0 */
- else if ((v & 3) == 0)
- return ERROR_FAIL;
- else
- return ERROR_OK;
- }
-
- struct flash_driver aduc702x_flash = {
- .name = "aduc702x",
- .flash_bank_command = aduc702x_flash_bank_command,
- .erase = aduc702x_erase,
- .protect = aduc702x_protect,
- .write = aduc702x_write,
- .read = default_flash_read,
- .probe = aduc702x_probe,
- .auto_probe = aduc702x_probe,
- .erase_check = default_flash_blank_check,
- .protect_check = aduc702x_protect_check,
- .info = aduc702x_info
- };
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