diff --git a/src/flash/nor/Makefile.am b/src/flash/nor/Makefile.am
index 532670436..c5ffd6a06 100644
--- a/src/flash/nor/Makefile.am
+++ b/src/flash/nor/Makefile.am
@@ -21,6 +21,7 @@ NOR_DRIVERS = \
%D%/avrf.c \
%D%/bluenrg-x.c \
%D%/cc3220sf.c \
+ %D%/cc2538.c \
%D%/cc26xx.c \
%D%/cfi.c \
%D%/dsp5680xx_flash.c \
@@ -80,6 +81,7 @@ NORHEADERS = \
%D%/core.h \
%D%/cc3220sf.h \
%D%/bluenrg-x.h \
+ %D%/cc2538.h \
%D%/cc26xx.h \
%D%/cfi.h \
%D%/driver.h \
diff --git a/src/flash/nor/cc2538.c b/src/flash/nor/cc2538.c
new file mode 100644
index 000000000..404340ed9
--- /dev/null
+++ b/src/flash/nor/cc2538.c
@@ -0,0 +1,432 @@
+/***************************************************************************
+ * Copyright (C) 2020 Loci Controls Inc *
+ * Copyright (C) 2017 by Texas Instruments, Inc. *
+ * *
+ * 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, see . *
+ ***************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "imp.h"
+#include "cc2538.h"
+#include
+#include
+#include
+#include
+#include
+
+#define FLASH_TIMEOUT 10000
+
+struct cc2538_bank {
+ const char *family_name;
+ uint16_t chip_id;
+ bool probed;
+ struct working_area *working_area;
+ struct armv7m_algorithm armv7m_info;
+ const uint8_t *algo_code;
+ uint32_t algo_size;
+ uint32_t algo_working_size;
+ uint32_t buffer_addr[2];
+ uint32_t params_addr[2];
+};
+
+static int cc2538_auto_probe(struct flash_bank *bank);
+
+static int cc2538_wait_algo_done(struct flash_bank *bank, uint32_t params_addr)
+{
+ struct target *target = bank->target;
+
+ uint32_t status_addr = params_addr + CC2538_STATUS_OFFSET;
+ uint32_t status = CC2538_BUFFER_FULL;
+ long long start_ms;
+ long long elapsed_ms;
+
+ int retval = ERROR_OK;
+
+ start_ms = timeval_ms();
+ while (CC2538_BUFFER_FULL == status) {
+ retval = target_read_u32(target, status_addr, &status);
+ if (ERROR_OK != retval)
+ return retval;
+
+ elapsed_ms = timeval_ms() - start_ms;
+ if (elapsed_ms > 500)
+ keep_alive();
+ if (elapsed_ms > FLASH_TIMEOUT)
+ break;
+ };
+
+ if (CC2538_BUFFER_EMPTY != status) {
+ LOG_ERROR("cc2538: Flash operation failed (0x%08x)", status);
+ return ERROR_FAIL;
+ }
+
+ return ERROR_OK;
+}
+
+static int cc2538_init(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ struct cc2538_bank *cc2538_bank = bank->driver_priv;
+
+ int retval;
+
+ /* Make sure we've probed the flash to get the size */
+ retval = cc2538_auto_probe(bank);
+ if (ERROR_OK != retval)
+ return retval;
+
+ /* Check for working area to use for flash helper algorithm */
+ if (NULL != cc2538_bank->working_area)
+ target_free_working_area(target, cc2538_bank->working_area);
+ retval = target_alloc_working_area(target, cc2538_bank->algo_working_size,
+ &cc2538_bank->working_area);
+ if (ERROR_OK != retval)
+ return retval;
+
+ /* Confirm the defined working address is the area we need to use */
+ if (CC2538_ALGO_BASE_ADDRESS != cc2538_bank->working_area->address)
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+
+ /* Write flash helper algorithm into target memory */
+ retval = target_write_buffer(target, CC2538_ALGO_BASE_ADDRESS,
+ cc2538_bank->algo_size, cc2538_bank->algo_code);
+ if (ERROR_OK != retval) {
+ LOG_ERROR("cc2538: Failed to load flash helper algorithm");
+ target_free_working_area(target, cc2538_bank->working_area);
+ return retval;
+ }
+
+ /* Initialize the ARMv7 specific info to run the algorithm */
+ cc2538_bank->armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
+ cc2538_bank->armv7m_info.core_mode = ARM_MODE_THREAD;
+
+ /* Begin executing the flash helper algorithm */
+ retval = target_start_algorithm(target, 0, NULL, 0, NULL,
+ CC2538_ALGO_BASE_ADDRESS, 0, &cc2538_bank->armv7m_info);
+ if (ERROR_OK != retval) {
+ LOG_ERROR("cc2538: Failed to start flash helper algorithm");
+ target_free_working_area(target, cc2538_bank->working_area);
+ return retval;
+ }
+
+ /*
+ * At this point, the algorithm is running on the target and
+ * ready to receive commands and data to flash the target
+ */
+
+ return retval;
+}
+
+static int cc2538_quit(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ struct cc2538_bank *cc2538_bank = bank->driver_priv;
+
+ int retval;
+
+ /* Regardless of the algo's status, attempt to halt the target */
+ (void)target_halt(target);
+
+ /* Now confirm target halted and clean up from flash helper algorithm */
+ retval = target_wait_algorithm(target, 0, NULL, 0, NULL, 0, FLASH_TIMEOUT,
+ &cc2538_bank->armv7m_info);
+
+ target_free_working_area(target, cc2538_bank->working_area);
+ cc2538_bank->working_area = NULL;
+
+ return retval;
+}
+
+static int cc2538_mass_erase(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ struct cc2538_bank *cc2538_bank = bank->driver_priv;
+ struct cc2538_algo_params algo_params;
+
+ int retval;
+
+ if (TARGET_HALTED != target->state) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ retval = cc2538_init(bank);
+ if (ERROR_OK != retval)
+ return retval;
+
+ /* Initialize algorithm parameters */
+ buf_set_u32(algo_params.address, 0, 32, 0);
+ buf_set_u32(algo_params.length, 0, 32, 4);
+ buf_set_u32(algo_params.command, 0, 32, CC2538_CMD_ERASE_ALL);
+ buf_set_u32(algo_params.status, 0, 32, CC2538_BUFFER_FULL);
+
+ /* Issue flash helper algorithm parameters for mass erase */
+ retval = target_write_buffer(target, cc2538_bank->params_addr[0],
+ sizeof(algo_params), (uint8_t *)&algo_params);
+
+ /* Wait for command to complete */
+ if (ERROR_OK == retval)
+ retval = cc2538_wait_algo_done(bank, cc2538_bank->params_addr[0]);
+
+ /* Regardless of errors, try to close down algo */
+ (void)cc2538_quit(bank);
+
+ return retval;
+}
+
+FLASH_BANK_COMMAND_HANDLER(cc2538_flash_bank_command)
+{
+ struct cc2538_bank *cc2538_bank;
+
+ if (CMD_ARGC < 6)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ cc2538_bank = malloc(sizeof(struct cc2538_bank));
+ if (NULL == cc2538_bank)
+ return ERROR_FAIL;
+
+ /* Initialize private flash information */
+ memset((void *)cc2538_bank, 0x00, sizeof(struct cc2538_bank));
+
+ /* Finish initialization of bank */
+ bank->driver_priv = cc2538_bank;
+ bank->next = NULL;
+
+ return ERROR_OK;
+}
+
+static int cc2538_erase(struct flash_bank *bank,
+ unsigned int first, unsigned int last)
+{
+ struct target *target = bank->target;
+ struct cc2538_bank *cc2538_bank = bank->driver_priv;
+ struct cc2538_algo_params algo_params;
+
+ uint32_t address;
+ uint32_t length;
+ int retval;
+
+ if (TARGET_HALTED != target->state) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ /* Do a mass erase if user requested all sectors of flash */
+ if ((first == 0) && (last == (bank->num_sectors - 1))) {
+ /* Request mass erase of flash */
+ return cc2538_mass_erase(bank);
+ }
+
+ address = first * CC2538_SECTOR_LENGTH;
+ length = (last - first + 1) * CC2538_SECTOR_LENGTH;
+
+ retval = cc2538_init(bank);
+ if (ERROR_OK != retval)
+ return retval;
+
+ /* Set up algorithm parameters for erase command */
+ buf_set_u32(algo_params.address, 0, 32, address);
+ buf_set_u32(algo_params.length, 0, 32, length);
+ buf_set_u32(algo_params.command, 0, 32, CC2538_CMD_ERASE_SECTORS);
+ buf_set_u32(algo_params.status, 0, 32, CC2538_BUFFER_FULL);
+
+ /* Issue flash helper algorithm parameters for erase */
+ retval = target_write_buffer(target, cc2538_bank->params_addr[0],
+ sizeof(algo_params), (uint8_t *)&algo_params);
+
+ /* If no error, wait for erase to finish */
+ if (ERROR_OK == retval)
+ retval = cc2538_wait_algo_done(bank, cc2538_bank->params_addr[0]);
+
+ /* Regardless of errors, try to close down algo */
+ (void)cc2538_quit(bank);
+
+ return retval;
+}
+
+static int cc2538_write(struct flash_bank *bank, const uint8_t *buffer,
+ uint32_t offset, uint32_t count)
+{
+ struct target *target = bank->target;
+ struct cc2538_bank *cc2538_bank = bank->driver_priv;
+ struct cc2538_algo_params algo_params[2];
+ uint32_t size = 0;
+ long long start_ms;
+ long long elapsed_ms;
+ uint32_t address;
+
+ uint32_t index;
+ int retval;
+
+ if (TARGET_HALTED != target->state) {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ retval = cc2538_init(bank);
+ if (ERROR_OK != retval)
+ return retval;
+
+ /* Initialize algorithm parameters to default values */
+ buf_set_u32(algo_params[0].command, 0, 32, CC2538_CMD_PROGRAM);
+ buf_set_u32(algo_params[1].command, 0, 32, CC2538_CMD_PROGRAM);
+
+ /* Write requested data, ping-ponging between two buffers */
+ index = 0;
+ start_ms = timeval_ms();
+ address = bank->base + offset;
+ while (count > 0) {
+
+ if (count > CC2538_SECTOR_LENGTH)
+ size = CC2538_SECTOR_LENGTH;
+ else
+ size = count;
+
+ /* Put next block of data to flash into buffer */
+ retval = target_write_buffer(target, cc2538_bank->buffer_addr[index],
+ size, buffer);
+ if (ERROR_OK != retval) {
+ LOG_ERROR("Unable to write data to target memory");
+ break;
+ }
+
+ /* Update algo parameters for next block */
+ buf_set_u32(algo_params[index].address, 0, 32, address);
+ buf_set_u32(algo_params[index].length, 0, 32, size);
+ buf_set_u32(algo_params[index].status, 0, 32, CC2538_BUFFER_FULL);
+
+ /* Issue flash helper algorithm parameters for block write */
+ retval = target_write_buffer(target, cc2538_bank->params_addr[index],
+ sizeof(algo_params[index]), (uint8_t *)&algo_params[index]);
+ if (ERROR_OK != retval)
+ break;
+
+ /* Wait for next ping pong buffer to be ready */
+ index ^= 1;
+ retval = cc2538_wait_algo_done(bank, cc2538_bank->params_addr[index]);
+ if (ERROR_OK != retval)
+ break;
+
+ count -= size;
+ buffer += size;
+ address += size;
+
+ elapsed_ms = timeval_ms() - start_ms;
+ if (elapsed_ms > 500)
+ keep_alive();
+ }
+
+ /* If no error yet, wait for last buffer to finish */
+ if (ERROR_OK == retval) {
+ index ^= 1;
+ retval = cc2538_wait_algo_done(bank, cc2538_bank->params_addr[index]);
+ }
+
+ /* Regardless of errors, try to close down algo */
+ (void)cc2538_quit(bank);
+
+ return retval;
+}
+
+static int cc2538_probe(struct flash_bank *bank)
+{
+ struct target *target = bank->target;
+ struct cc2538_bank *cc2538_bank = bank->driver_priv;
+
+ uint32_t value;
+ int num_sectors;
+
+ int retval;
+
+ retval = target_read_u32(target, CC2538_FLASH_CTRL_DIECFG0, &value);
+ if (ERROR_OK != retval)
+ return retval;
+
+ cc2538_bank->chip_id = value >> 16;
+
+ num_sectors = ((value & 0x70) >> 4) * 0x20000 / CC2538_SECTOR_LENGTH;
+ if (num_sectors > CC2538_MAX_SECTORS)
+ num_sectors = CC2538_MAX_SECTORS;
+
+ bank->sectors = malloc(sizeof(struct flash_sector) * num_sectors);
+ if (NULL == bank->sectors)
+ return ERROR_FAIL;
+
+ /* Set up flash helper algorithm */
+ cc2538_bank->algo_code = cc2538_algo;
+ cc2538_bank->algo_size = sizeof(cc2538_algo);
+ cc2538_bank->algo_working_size = CC2538_WORKING_SIZE;
+ cc2538_bank->buffer_addr[0] = CC2538_ALGO_BUFFER_0;
+ cc2538_bank->buffer_addr[1] = CC2538_ALGO_BUFFER_1;
+ cc2538_bank->params_addr[0] = CC2538_ALGO_PARAMS_0;
+ cc2538_bank->params_addr[1] = CC2538_ALGO_PARAMS_1;
+
+ bank->base = CC2538_FLASH_BASE_ADDR;
+ bank->num_sectors = num_sectors;
+ bank->size = num_sectors * CC2538_SECTOR_LENGTH;
+ bank->write_start_alignment = 0;
+ bank->write_end_alignment = 0;
+
+ for (int i = 0; i < num_sectors; i++) {
+ bank->sectors[i].offset = i * CC2538_SECTOR_LENGTH;
+ bank->sectors[i].size = CC2538_SECTOR_LENGTH;
+ bank->sectors[i].is_erased = -1;
+ bank->sectors[i].is_protected = 0;
+ }
+
+ /* We've successfully determined the stats on the flash bank */
+ cc2538_bank->probed = true;
+
+ /* If we fall through to here, then all went well */
+
+ return ERROR_OK;
+}
+
+static int cc2538_auto_probe(struct flash_bank *bank)
+{
+ struct cc2538_bank *cc2538_bank = bank->driver_priv;
+
+ int retval = ERROR_OK;
+
+ if (!cc2538_bank->probed)
+ retval = cc2538_probe(bank);
+
+ return retval;
+}
+
+static int cc2538_info(struct flash_bank *bank, struct command_invocation *cmd)
+{
+ struct cc2538_bank *cc2538_bank = bank->driver_priv;
+
+ command_print_sameline(cmd,
+ "cc2538 device: chip ID 0x%04x\n", cc2538_bank->chip_id);
+
+ return ERROR_OK;
+}
+
+const struct flash_driver cc2538_flash = {
+ .name = "cc2538",
+ .flash_bank_command = cc2538_flash_bank_command,
+ .erase = cc2538_erase,
+ .write = cc2538_write,
+ .read = default_flash_read,
+ .probe = cc2538_probe,
+ .auto_probe = cc2538_auto_probe,
+ .erase_check = default_flash_blank_check,
+ .info = cc2538_info,
+ .free_driver_priv = default_flash_free_driver_priv,
+};
diff --git a/src/flash/nor/cc2538.h b/src/flash/nor/cc2538.h
new file mode 100644
index 000000000..ac9fa3d6b
--- /dev/null
+++ b/src/flash/nor/cc2538.h
@@ -0,0 +1,65 @@
+/***************************************************************************
+ * Copyright (C) 2020 Loci Controls Inc *
+ * Copyright (C) 2017 by Texas Instruments, Inc. *
+ * *
+ * 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, see . *
+ ***************************************************************************/
+
+#ifndef OPENOCD_FLASH_NOR_CC2538_H
+#define OPENOCD_FLASH_NOR_CC2538_H
+
+#define CC2538_FLASH_BASE_ADDR 0x00200000
+#define CC2538_FLASH_MAX_SIZE 0x00080000
+#define CC2538_ALGO_BASE_ADDRESS 0x20000000
+
+#define CC2538_FLASH_CTRL_DIECFG0 0x400D3014
+
+/* Flash algorithm parameters */
+#define CC2538_MAX_SECTORS 256
+#define CC2538_SECTOR_LENGTH 0x800
+#define CC2538_ALGO_BUFFER_0 0x20001c00
+#define CC2538_ALGO_BUFFER_1 0x20002c00
+#define CC2538_ALGO_PARAMS_0 0x20001bd8
+#define CC2538_ALGO_PARAMS_1 0x20001bec
+#define CC2538_WORKING_SIZE (CC2538_ALGO_BUFFER_1 + CC2538_SECTOR_LENGTH - \
+ CC2538_ALGO_BASE_ADDRESS)
+/* Flash helper algorithm buffer flags */
+#define CC2538_BUFFER_EMPTY 0x00000000
+#define CC2538_BUFFER_FULL 0xffffffff
+
+/* Flash helper algorithm commands */
+#define CC2538_CMD_NO_ACTION 0
+#define CC2538_CMD_ERASE_ALL 1
+#define CC2538_CMD_PROGRAM 2
+#define CC2538_CMD_ERASE_SECTORS 3
+
+/* Flash helper algorithm parameter block struct */
+#define CC2538_STATUS_OFFSET 0x0c
+struct cc2538_algo_params {
+ uint8_t address[4];
+ uint8_t length[4];
+ uint8_t command[4];
+ uint8_t status[4];
+};
+
+/* Flash helper algorithm */
+const uint8_t cc2538_algo[] = {
+ 0x80, 0xb4, 0x83, 0xb0, 0x00, 0xaf, 0x03, 0x4b,
+ 0x7b, 0x60, 0x7b, 0x68, 0x4f, 0xf0, 0xff, 0x32,
+ 0x1a, 0x60, 0xfe, 0xe7, 0xf8, 0x1b, 0x00, 0x20,
+//#include "../../../contrib/loaders/flash/cc2538/cc2538_algo.inc"
+};
+
+
+#endif /* OPENOCD_FLASH_NOR_CC2538_H */
diff --git a/src/flash/nor/drivers.c b/src/flash/nor/drivers.c
index 6eadc756b..f7491a50c 100644
--- a/src/flash/nor/drivers.c
+++ b/src/flash/nor/drivers.c
@@ -34,6 +34,7 @@ extern const struct flash_driver atsamv_flash;
extern const struct flash_driver avr_flash;
extern const struct flash_driver bluenrgx_flash;
extern const struct flash_driver cc3220sf_flash;
+extern const struct flash_driver cc2538_flash;
extern const struct flash_driver cc26xx_flash;
extern const struct flash_driver cfi_flash;
extern const struct flash_driver dsp5680xx_flash;
@@ -108,6 +109,7 @@ static const struct flash_driver * const flash_drivers[] = {
&avr_flash,
&bluenrgx_flash,
&cc3220sf_flash,
+ &cc2538_flash,
&cc26xx_flash,
&cfi_flash,
&dsp5680xx_flash,
diff --git a/tcl/target/cc2538.cfg b/tcl/target/cc2538.cfg
index 8d232f41f..dbf414502 100644
--- a/tcl/target/cc2538.cfg
+++ b/tcl/target/cc2538.cfg
@@ -43,3 +43,15 @@ jtag configure $_CHIPNAME.jrc -event post-reset "ti_cjtag_to_4pin_jtag $_CHIPNAM
set _TARGETNAME $_CHIPNAME.cpu
dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
target create $_TARGETNAME cortex_m -dap $_CHIPNAME.dap
+
+# Flash
+if { [info exists WORKAREASIZE] } {
+ set _WORKAREASIZE $WORKAREASIZE
+} else {
+ set _WORKAREASIZE 0x4000
+}
+
+$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
+
+set _FLASHNAME $_CHIPNAME.flash
+flash bank $_FLASHNAME cc2538 0 0 0 0 $_TARGETNAME