+/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * Copyright (C) 2011 by Andreas Fritiofson *
+ * andreas.fritiofson@gmail.com *
+ * *
+ * Copyright (C) 2013 by Paul Fertser *
+ * fercerpav@gmail.com *
+ * *
+ * 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 <target/algorithm.h>
+#include <target/armv7m.h>
+
+#define MD_RST_CLK 0x40020000
+#define MD_PER_CLOCK (MD_RST_CLK + 0x1C)
+#define MD_PER_CLOCK_EEPROM (1 << 3)
+#define MD_PER_CLOCK_RST_CLK (1 << 4)
+
+#define FLASH_REG_BASE 0x40018000
+#define FLASH_CMD (FLASH_REG_BASE + 0x00)
+#define FLASH_ADR (FLASH_REG_BASE + 0x04)
+#define FLASH_DI (FLASH_REG_BASE + 0x08)
+#define FLASH_DO (FLASH_REG_BASE + 0x0C)
+#define FLASH_KEY (FLASH_REG_BASE + 0x10)
+
+#define FLASH_NVSTR (1 << 13)
+#define FLASH_PROG (1 << 12)
+#define FLASH_MAS1 (1 << 11)
+#define FLASH_ERASE (1 << 10)
+#define FLASH_IFREN (1 << 9)
+#define FLASH_SE (1 << 8)
+#define FLASH_YE (1 << 7)
+#define FLASH_XE (1 << 6)
+#define FLASH_RD (1 << 2)
+#define FLASH_WR (1 << 1)
+#define FLASH_CON (1 << 0)
+#define FLASH_DELAY_MASK (7 << 3)
+
+#define KEY 0x8AAA5551
+
+struct mdr_flash_bank {
+ int probed;
+ unsigned int mem_type;
+ unsigned int page_count;
+ unsigned int sec_count;
+};
+
+/* flash bank <name> mdr <base> <size> 0 0 <target#> <type> <page_count> <sec_count> */
+FLASH_BANK_COMMAND_HANDLER(mdr_flash_bank_command)
+{
+ struct mdr_flash_bank *mdr_info;
+
+ if (CMD_ARGC < 9)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ mdr_info = malloc(sizeof(struct mdr_flash_bank));
+
+ bank->driver_priv = mdr_info;
+ mdr_info->probed = 0;
+ COMMAND_PARSE_NUMBER(uint, CMD_ARGV[6], mdr_info->mem_type);
+ COMMAND_PARSE_NUMBER(uint, CMD_ARGV[7], mdr_info->page_count);
+ COMMAND_PARSE_NUMBER(uint, CMD_ARGV[8], mdr_info->sec_count);
+ return ERROR_OK;
+}
+
+static int mdr_protect_check(struct flash_bank *bank)
+{
+ return ERROR_OK;
+}
+
+static int mdr_mass_erase(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ struct mdr_flash_bank *mdr_info = bank->driver_priv;
+ uint32_t flash_cmd;
+ int retval;
+ unsigned int i;
+
+ retval = target_read_u32(target, FLASH_CMD, &flash_cmd);
+ if (retval != ERROR_OK)
+ return retval;
+
+ for (i = 0; i < mdr_info->sec_count; i++) {
+ retval = target_write_u32(target, FLASH_ADR, i << 2);
+ if (retval != ERROR_OK)
+ return retval;
+
+ flash_cmd |= FLASH_XE | FLASH_MAS1 | FLASH_ERASE;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ return retval;
+ flash_cmd |= FLASH_NVSTR;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ return retval;
+ flash_cmd &= ~FLASH_ERASE;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ return retval;
+ flash_cmd &= ~(FLASH_XE | FLASH_MAS1 | FLASH_NVSTR);
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ return retval;
+}
+
+static int mdr_erase(struct flash_bank *bank, int first, int last)
+{
+ struct target *target = bank->target;
+ struct mdr_flash_bank *mdr_info = bank->driver_priv;
+ int i, retval, retval2;
+ unsigned int j;
+ uint32_t flash_cmd, cur_per_clock;
+
+ if (bank->target->state != TARGET_HALTED) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ retval = target_read_u32(target, MD_PER_CLOCK, &cur_per_clock);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (!(cur_per_clock & 0x10)) {
+ LOG_ERROR("Target needs reset before flash operations");
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ retval = target_write_u32(target, MD_PER_CLOCK, cur_per_clock | MD_PER_CLOCK_EEPROM);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_write_u32(target, FLASH_KEY, KEY);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ retval = target_read_u32(target, FLASH_CMD, &flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ /* Switch on register access */
+ flash_cmd = (flash_cmd & FLASH_DELAY_MASK) | FLASH_CON;
+ if (mdr_info->mem_type)
+ flash_cmd |= FLASH_IFREN;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ if ((first == 0) && (last == (bank->num_sectors - 1))) {
+ retval = mdr_mass_erase(bank);
+ goto reset_pg_and_lock;
+ }
+
+ unsigned int page_size = bank->size / mdr_info->page_count;
+ for (i = first; i <= last; i++) {
+ for (j = 0; j < mdr_info->sec_count; j++) {
+ retval = target_write_u32(target, FLASH_ADR, (i * page_size) | (j << 2));
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ flash_cmd |= FLASH_XE | FLASH_ERASE;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+ flash_cmd |= FLASH_NVSTR;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+ flash_cmd &= ~FLASH_ERASE;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+ flash_cmd &= ~(FLASH_XE | FLASH_NVSTR);
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+ }
+ bank->sectors[i].is_erased = 1;
+ }
+
+reset_pg_and_lock:
+ flash_cmd &= FLASH_DELAY_MASK;
+ retval2 = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval == ERROR_OK)
+ retval = retval2;
+
+ retval2 = target_write_u32(target, FLASH_KEY, 0);
+ if (retval == ERROR_OK)
+ retval = retval2;
+
+ return retval;
+}
+
+static int mdr_protect(struct flash_bank *bank, int set, int first, int last)
+{
+ return ERROR_OK;
+}
+
+static int mdr_write_block(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t offset, uint32_t count)
+{
+ struct target *target = bank->target;
+ uint32_t buffer_size = 16384;
+ struct working_area *write_algorithm;
+ struct working_area *source;
+ uint32_t address = bank->base + offset;
+ struct reg_param reg_params[5];
+ struct armv7m_algorithm armv7m_info;
+ int retval = ERROR_OK;
+
+ /* see contrib/loaders/flash/mdr32fx.S for src */
+ static const uint8_t mdr32fx_flash_write_code[] = {
+ 0x07, 0x68, 0x16, 0x68, 0x00, 0x2e, 0x2e, 0xd0, 0x55, 0x68, 0xb5, 0x42,
+ 0xf9, 0xd0, 0x2e, 0x68, 0x44, 0x60, 0x86, 0x60, 0x17, 0x4e, 0x37, 0x43,
+ 0x07, 0x60, 0x05, 0x26, 0x00, 0xf0, 0x25, 0xf8, 0x15, 0x4e, 0x37, 0x43,
+ 0x07, 0x60, 0x0d, 0x26, 0x00, 0xf0, 0x1f, 0xf8, 0x80, 0x26, 0x37, 0x43,
+ 0x07, 0x60, 0x3d, 0x26, 0x00, 0xf0, 0x19, 0xf8, 0x80, 0x26, 0xb7, 0x43,
+ 0x07, 0x60, 0x0f, 0x4e, 0xb7, 0x43, 0x07, 0x60, 0x05, 0x26, 0x00, 0xf0,
+ 0x10, 0xf8, 0x0d, 0x4e, 0xb7, 0x43, 0x07, 0x60, 0x04, 0x35, 0x04, 0x34,
+ 0x9d, 0x42, 0x01, 0xd3, 0x15, 0x46, 0x08, 0x35, 0x55, 0x60, 0x01, 0x39,
+ 0x00, 0x29, 0x00, 0xd0, 0xcd, 0xe7, 0x30, 0x46, 0x00, 0xbe, 0x01, 0x3e,
+ 0x00, 0x2e, 0xfc, 0xd1, 0x70, 0x47, 0x00, 0x00, 0x40, 0x10, 0x00, 0x00,
+ 0x00, 0x20, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x40, 0x20, 0x00, 0x00
+ };
+
+ /* flash write code */
+ if (target_alloc_working_area(target, sizeof(mdr32fx_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(mdr32fx_flash_write_code), (uint8_t *)mdr32fx_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;
+ buffer_size &= ~3UL; /* Make sure it's 4 byte aligned */
+ 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;
+ }
+ };
+
+ init_reg_param(®_params[0], "r0", 32, PARAM_IN_OUT); /* flash base (in), status (out) */
+ init_reg_param(®_params[1], "r1", 32, PARAM_OUT); /* count (32bit) */
+ init_reg_param(®_params[2], "r2", 32, PARAM_OUT); /* buffer start */
+ init_reg_param(®_params[3], "r3", 32, PARAM_OUT); /* buffer end */
+ init_reg_param(®_params[4], "r4", 32, PARAM_IN_OUT); /* target address */
+
+ buf_set_u32(reg_params[0].value, 0, 32, FLASH_REG_BASE);
+ buf_set_u32(reg_params[1].value, 0, 32, count);
+ buf_set_u32(reg_params[2].value, 0, 32, source->address);
+ buf_set_u32(reg_params[3].value, 0, 32, source->address + source->size);
+ buf_set_u32(reg_params[4].value, 0, 32, address);
+
+ armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
+ armv7m_info.core_mode = ARM_MODE_THREAD;
+
+ retval = target_run_flash_async_algorithm(target, buffer, count, 4,
+ 0, NULL,
+ 5, reg_params,
+ source->address, source->size,
+ write_algorithm->address, 0,
+ &armv7m_info);
+
+ if (retval == ERROR_FLASH_OPERATION_FAILED)
+ LOG_ERROR("flash write failed at address 0x%"PRIx32,
+ buf_get_u32(reg_params[4].value, 0, 32));
+
+ 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;
+}
+
+static int mdr_write(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t offset, uint32_t count)
+{
+ struct target *target = bank->target;
+ struct mdr_flash_bank *mdr_info = bank->driver_priv;
+ uint8_t *new_buffer = NULL;
+
+ if (bank->target->state != TARGET_HALTED) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if (offset & 0x3) {
+ LOG_ERROR("offset 0x%" PRIx32 " breaks required 4-byte alignment", offset);
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+
+ /* If there's an odd number of bytes, the data has to be padded. Duplicate
+ * the buffer and use the normal code path with a single block write since
+ * it's probably cheaper than to special case the last odd write using
+ * discrete accesses. */
+ int rem = count % 4;
+ if (rem) {
+ new_buffer = malloc(count + rem);
+ if (new_buffer == NULL) {
+ LOG_ERROR("odd number of bytes to write and no memory for padding buffer");
+ return ERROR_FAIL;
+ }
+ LOG_INFO("odd number of bytes to write, padding with 0xff");
+ buffer = memcpy(new_buffer, buffer, count);
+ while (rem--)
+ buffer[count++] = 0xff;
+ }
+
+ uint32_t flash_cmd, cur_per_clock;
+ int retval, retval2;
+
+ retval = target_read_u32(target, MD_PER_CLOCK, &cur_per_clock);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (!(cur_per_clock & MD_PER_CLOCK_RST_CLK)) {
+ /* Something's very wrong if the RST_CLK module is not clocked */
+ LOG_ERROR("Target needs reset before flash operations");
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ retval = target_write_u32(target, MD_PER_CLOCK, cur_per_clock | MD_PER_CLOCK_EEPROM);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_write_u32(target, FLASH_KEY, KEY);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ retval = target_read_u32(target, FLASH_CMD, &flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ /* Switch on register access */
+ flash_cmd = (flash_cmd & FLASH_DELAY_MASK) | FLASH_CON;
+ if (mdr_info->mem_type)
+ flash_cmd |= FLASH_IFREN;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ /* try using block write */
+ retval = mdr_write_block(bank, buffer, offset, count/4);
+
+ if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
+ /* if block write failed (no sufficient working area),
+ * we use normal (slow) single halfword accesses */
+ LOG_WARNING("Can't use block writes, falling back to single memory accesses");
+
+ unsigned int page_size = bank->size / mdr_info->page_count;
+ unsigned int page_mask = page_size - 1;
+ while (count > 0) {
+ unsigned int i, j;
+ unsigned int cur_page = offset & ~page_mask;
+ unsigned int bytes_to_write = cur_page + page_size - offset;
+ if (count < bytes_to_write)
+ bytes_to_write = count;
+
+ /*LOG_INFO("Selecting next page: %08x", cur_page);*/
+
+ for (i = 0; i < mdr_info->sec_count; i++) {
+ retval = target_write_u32(target, FLASH_ADR, offset + i*4);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+ /*LOG_INFO("Selecting page/sector: %08x", offset + i*4);*/
+
+ flash_cmd |= FLASH_XE | FLASH_PROG;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ flash_cmd |= FLASH_NVSTR;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ for (j = 0;
+ (((offset + j + i*4) & ~page_mask) == cur_page) &&
+ (j + i*4 < count);
+ j += mdr_info->sec_count*4) {
+ uint32_t value;
+ memcpy(&value, buffer + j + i*4, sizeof(uint32_t));
+ retval = target_write_u32(target, FLASH_DI, value);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+ /*LOG_INFO("Writing to addr %08x", offset + j + i*4);*/
+ retval = target_write_u32(target, FLASH_ADR, offset + j + i*4);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ flash_cmd |= FLASH_YE;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+ flash_cmd &= ~FLASH_YE;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+ }
+ flash_cmd &= ~FLASH_NVSTR;
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+
+ flash_cmd &= ~(FLASH_XE | FLASH_PROG);
+ retval = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
+ }
+
+ buffer += bytes_to_write;
+ offset += bytes_to_write;
+ count -= bytes_to_write;
+ }
+ }
+
+reset_pg_and_lock:
+ flash_cmd &= FLASH_DELAY_MASK;
+ retval2 = target_write_u32(target, FLASH_CMD, flash_cmd);
+ if (retval == ERROR_OK)
+ retval = retval2;
+
+ retval2 = target_write_u32(target, FLASH_KEY, 0);
+ if (retval == ERROR_OK)
+ retval = retval2;
+
+ if (new_buffer)
+ free(new_buffer);
+
+ return retval;
+}
+
+static int mdr_probe(struct flash_bank *bank)
+{
+ struct mdr_flash_bank *mdr_info = bank->driver_priv;
+ unsigned int page_count, page_size, i;
+
+ page_count = mdr_info->page_count;
+ page_size = bank->size / page_count;
+
+ bank->num_sectors = page_count;
+ bank->sectors = malloc(sizeof(struct flash_sector) * page_count);
+
+ for (i = 0; i < page_count; i++) {
+ bank->sectors[i].offset = i * page_size;
+ bank->sectors[i].size = page_size;
+ bank->sectors[i].is_erased = -1;
+ bank->sectors[i].is_protected = 0;
+ }
+
+ mdr_info->probed = 1;
+
+ return ERROR_OK;
+}
+
+static int mdr_auto_probe(struct flash_bank *bank)
+{
+ struct mdr_flash_bank *mdr_info = bank->driver_priv;
+ if (mdr_info->probed)
+ return ERROR_OK;
+ return mdr_probe(bank);
+}
+
+static int get_mdr_info(struct flash_bank *bank, char *buf, int buf_size)
+{
+ struct mdr_flash_bank *mdr_info = bank->driver_priv;
+ snprintf(buf, buf_size, "MDR32Fx - %s",
+ mdr_info->mem_type ? "info memory" : "main memory");
+
+ return ERROR_OK;
+}
+
+struct flash_driver mdr_flash = {
+ .name = "mdr",
+ .flash_bank_command = mdr_flash_bank_command,
+ .erase = mdr_erase,
+ .protect = mdr_protect,
+ .write = mdr_write,
+ .read = default_flash_read,
+ .probe = mdr_probe,
+ .auto_probe = mdr_auto_probe,
+ .erase_check = default_flash_blank_check,
+ .protect_check = mdr_protect_check,
+ .info = get_mdr_info,
+};
Code Review / openocd.git / commitdiff