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// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2017 by Texas Instruments, Inc. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "imp.h"
#include "cc26xx.h"
#include <helper/binarybuffer.h>
#include <helper/time_support.h>
#include <target/algorithm.h>
#include <target/armv7m.h>
#include <target/image.h>
#define FLASH_TIMEOUT 8000
struct cc26xx_bank {
const char *family_name;
uint32_t icepick_id;
uint32_t user_id;
uint32_t device_type;
uint32_t sector_length;
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];
};
/* Flash helper algorithm for CC26x0 Chameleon targets */
static const uint8_t cc26x0_algo[] = {
#include "../../../contrib/loaders/flash/cc26xx/cc26x0_algo.inc"
};
/* Flash helper algorithm for CC26x2 Agama targets */
static const uint8_t cc26x2_algo[] = {
#include "../../../contrib/loaders/flash/cc26xx/cc26x2_algo.inc"
};
static int cc26xx_auto_probe(struct flash_bank *bank);
static uint32_t cc26xx_device_type(uint32_t icepick_id, uint32_t user_id)
{
uint32_t device_type = 0;
switch (icepick_id & ICEPICK_ID_MASK) {
case CC26X0_ICEPICK_ID:
device_type = CC26X0_TYPE;
break;
case CC26X1_ICEPICK_ID:
device_type = CC26X1_TYPE;
break;
case CC13X0_ICEPICK_ID:
device_type = CC13X0_TYPE;
break;
case CC13X2_CC26X2_ICEPICK_ID:
default:
if ((user_id & USER_ID_CC13_MASK) != 0)
device_type = CC13X2_TYPE;
else
device_type = CC26X2_TYPE;
break;
}
return device_type;
}
static uint32_t cc26xx_sector_length(uint32_t icepick_id)
{
uint32_t sector_length;
switch (icepick_id & ICEPICK_ID_MASK) {
case CC26X0_ICEPICK_ID:
case CC26X1_ICEPICK_ID:
case CC13X0_ICEPICK_ID:
/* Chameleon family device */
sector_length = CC26X0_SECTOR_LENGTH;
break;
case CC13X2_CC26X2_ICEPICK_ID:
default:
/* Agama family device */
sector_length = CC26X2_SECTOR_LENGTH;
break;
}
return sector_length;
}
static int cc26xx_wait_algo_done(struct flash_bank *bank, uint32_t params_addr)
{
struct target *target = bank->target;
struct cc26xx_bank *cc26xx_bank = bank->driver_priv;
uint32_t status_addr = params_addr + CC26XX_STATUS_OFFSET;
uint32_t status = CC26XX_BUFFER_FULL;
long long start_ms;
long long elapsed_ms;
int retval = ERROR_OK;
start_ms = timeval_ms();
while (status == CC26XX_BUFFER_FULL) {
retval = target_read_u32(target, status_addr, &status);
if (retval != ERROR_OK)
return retval;
elapsed_ms = timeval_ms() - start_ms;
if (elapsed_ms > 500)
keep_alive();
if (elapsed_ms > FLASH_TIMEOUT)
break;
};
if (status != CC26XX_BUFFER_EMPTY) {
LOG_ERROR("%s: Flash operation failed", cc26xx_bank->family_name);
return ERROR_FAIL;
}
return ERROR_OK;
}
static int cc26xx_init(struct flash_bank *bank)
{
struct target *target = bank->target;
struct cc26xx_bank *cc26xx_bank = bank->driver_priv;
int retval;
/* Make sure we've probed the flash to get the device and size */
retval = cc26xx_auto_probe(bank);
if (retval != ERROR_OK)
return retval;
/* Check for working area to use for flash helper algorithm */
target_free_working_area(target, cc26xx_bank->working_area);
cc26xx_bank->working_area = NULL;
retval = target_alloc_working_area(target, cc26xx_bank->algo_working_size,
&cc26xx_bank->working_area);
if (retval != ERROR_OK)
return retval;
/* Confirm the defined working address is the area we need to use */
if (cc26xx_bank->working_area->address != CC26XX_ALGO_BASE_ADDRESS)
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
/* Write flash helper algorithm into target memory */
retval = target_write_buffer(target, CC26XX_ALGO_BASE_ADDRESS,
cc26xx_bank->algo_size, cc26xx_bank->algo_code);
if (retval != ERROR_OK) {
LOG_ERROR("%s: Failed to load flash helper algorithm",
cc26xx_bank->family_name);
target_free_working_area(target, cc26xx_bank->working_area);
cc26xx_bank->working_area = NULL;
return retval;
}
/* Initialize the ARMv7 specific info to run the algorithm */
cc26xx_bank->armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
cc26xx_bank->armv7m_info.core_mode = ARM_MODE_THREAD;
/* Begin executing the flash helper algorithm */
retval = target_start_algorithm(target, 0, NULL, 0, NULL,
CC26XX_ALGO_BASE_ADDRESS, 0, &cc26xx_bank->armv7m_info);
if (retval != ERROR_OK) {
LOG_ERROR("%s: Failed to start flash helper algorithm",
cc26xx_bank->family_name);
target_free_working_area(target, cc26xx_bank->working_area);
cc26xx_bank->working_area = NULL;
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 cc26xx_quit(struct flash_bank *bank)
{
struct target *target = bank->target;
struct cc26xx_bank *cc26xx_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,
&cc26xx_bank->armv7m_info);
target_free_working_area(target, cc26xx_bank->working_area);
cc26xx_bank->working_area = NULL;
return retval;
}
static int cc26xx_mass_erase(struct flash_bank *bank)
{
struct target *target = bank->target;
struct cc26xx_bank *cc26xx_bank = bank->driver_priv;
struct cc26xx_algo_params algo_params;
int retval;
if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
retval = cc26xx_init(bank);
if (retval != ERROR_OK)
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, CC26XX_CMD_ERASE_ALL);
buf_set_u32(algo_params.status, 0, 32, CC26XX_BUFFER_FULL);
/* Issue flash helper algorithm parameters for mass erase */
retval = target_write_buffer(target, cc26xx_bank->params_addr[0],
sizeof(algo_params), (uint8_t *)&algo_params);
/* Wait for command to complete */
if (retval == ERROR_OK)
retval = cc26xx_wait_algo_done(bank, cc26xx_bank->params_addr[0]);
/* Regardless of errors, try to close down algo */
(void)cc26xx_quit(bank);
return retval;
}
FLASH_BANK_COMMAND_HANDLER(cc26xx_flash_bank_command)
{
struct cc26xx_bank *cc26xx_bank;
if (CMD_ARGC < 6)
return ERROR_COMMAND_SYNTAX_ERROR;
cc26xx_bank = malloc(sizeof(struct cc26xx_bank));
if (!cc26xx_bank)
return ERROR_FAIL;
/* Initialize private flash information */
memset((void *)cc26xx_bank, 0x00, sizeof(struct cc26xx_bank));
cc26xx_bank->family_name = "cc26xx";
cc26xx_bank->device_type = CC26XX_NO_TYPE;
cc26xx_bank->sector_length = 0x1000;
/* Finish initialization of bank */
bank->driver_priv = cc26xx_bank;
return ERROR_OK;
}
static int cc26xx_erase(struct flash_bank *bank, unsigned int first,
unsigned int last)
{
struct target *target = bank->target;
struct cc26xx_bank *cc26xx_bank = bank->driver_priv;
struct cc26xx_algo_params algo_params;
uint32_t address;
uint32_t length;
int retval;
if (target->state != TARGET_HALTED) {
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 cc26xx_mass_erase(bank);
}
address = first * cc26xx_bank->sector_length;
length = (last - first + 1) * cc26xx_bank->sector_length;
retval = cc26xx_init(bank);
if (retval != ERROR_OK)
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, CC26XX_CMD_ERASE_SECTORS);
buf_set_u32(algo_params.status, 0, 32, CC26XX_BUFFER_FULL);
/* Issue flash helper algorithm parameters for erase */
retval = target_write_buffer(target, cc26xx_bank->params_addr[0],
sizeof(algo_params), (uint8_t *)&algo_params);
/* If no error, wait for erase to finish */
if (retval == ERROR_OK)
retval = cc26xx_wait_algo_done(bank, cc26xx_bank->params_addr[0]);
/* Regardless of errors, try to close down algo */
(void)cc26xx_quit(bank);
return retval;
}
static int cc26xx_write(struct flash_bank *bank, const uint8_t *buffer,
uint32_t offset, uint32_t count)
{
struct target *target = bank->target;
struct cc26xx_bank *cc26xx_bank = bank->driver_priv;
struct cc26xx_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->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
retval = cc26xx_init(bank);
if (retval != ERROR_OK)
return retval;
/* Initialize algorithm parameters to default values */
buf_set_u32(algo_params[0].command, 0, 32, CC26XX_CMD_PROGRAM);
buf_set_u32(algo_params[1].command, 0, 32, CC26XX_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 > cc26xx_bank->sector_length)
size = cc26xx_bank->sector_length;
else
size = count;
/* Put next block of data to flash into buffer */
retval = target_write_buffer(target, cc26xx_bank->buffer_addr[index],
size, buffer);
if (retval != ERROR_OK) {
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, CC26XX_BUFFER_FULL);
/* Issue flash helper algorithm parameters for block write */
retval = target_write_buffer(target, cc26xx_bank->params_addr[index],
sizeof(algo_params[index]), (uint8_t *)&algo_params[index]);
if (retval != ERROR_OK)
break;
/* Wait for next ping pong buffer to be ready */
index ^= 1;
retval = cc26xx_wait_algo_done(bank, cc26xx_bank->params_addr[index]);
if (retval != ERROR_OK)
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 (retval == ERROR_OK) {
index ^= 1;
retval = cc26xx_wait_algo_done(bank, cc26xx_bank->params_addr[index]);
}
/* Regardless of errors, try to close down algo */
(void)cc26xx_quit(bank);
return retval;
}
static int cc26xx_probe(struct flash_bank *bank)
{
struct target *target = bank->target;
struct cc26xx_bank *cc26xx_bank = bank->driver_priv;
uint32_t sector_length;
uint32_t value;
int num_sectors;
int max_sectors;
int retval;
retval = target_read_u32(target, FCFG1_ICEPICK_ID, &value);
if (retval != ERROR_OK)
return retval;
cc26xx_bank->icepick_id = value;
retval = target_read_u32(target, FCFG1_USER_ID, &value);
if (retval != ERROR_OK)
return retval;
cc26xx_bank->user_id = value;
cc26xx_bank->device_type = cc26xx_device_type(cc26xx_bank->icepick_id,
cc26xx_bank->user_id);
sector_length = cc26xx_sector_length(cc26xx_bank->icepick_id);
/* Set up appropriate flash helper algorithm */
switch (cc26xx_bank->icepick_id & ICEPICK_ID_MASK) {
case CC26X0_ICEPICK_ID:
case CC26X1_ICEPICK_ID:
case CC13X0_ICEPICK_ID:
/* Chameleon family device */
cc26xx_bank->algo_code = cc26x0_algo;
cc26xx_bank->algo_size = sizeof(cc26x0_algo);
cc26xx_bank->algo_working_size = CC26X0_WORKING_SIZE;
cc26xx_bank->buffer_addr[0] = CC26X0_ALGO_BUFFER_0;
cc26xx_bank->buffer_addr[1] = CC26X0_ALGO_BUFFER_1;
cc26xx_bank->params_addr[0] = CC26X0_ALGO_PARAMS_0;
cc26xx_bank->params_addr[1] = CC26X0_ALGO_PARAMS_1;
max_sectors = CC26X0_MAX_SECTORS;
break;
case CC13X2_CC26X2_ICEPICK_ID:
default:
/* Agama family device */
cc26xx_bank->algo_code = cc26x2_algo;
cc26xx_bank->algo_size = sizeof(cc26x2_algo);
cc26xx_bank->algo_working_size = CC26X2_WORKING_SIZE;
cc26xx_bank->buffer_addr[0] = CC26X2_ALGO_BUFFER_0;
cc26xx_bank->buffer_addr[1] = CC26X2_ALGO_BUFFER_1;
cc26xx_bank->params_addr[0] = CC26X2_ALGO_PARAMS_0;
cc26xx_bank->params_addr[1] = CC26X2_ALGO_PARAMS_1;
max_sectors = CC26X2_MAX_SECTORS;
break;
}
retval = target_read_u32(target, CC26XX_FLASH_SIZE_INFO, &value);
if (retval != ERROR_OK)
return retval;
num_sectors = value & 0xff;
if (num_sectors > max_sectors)
num_sectors = max_sectors;
bank->sectors = malloc(sizeof(struct flash_sector) * num_sectors);
if (!bank->sectors)
return ERROR_FAIL;
bank->base = CC26XX_FLASH_BASE_ADDR;
bank->num_sectors = num_sectors;
bank->size = num_sectors * sector_length;
bank->write_start_alignment = 0;
bank->write_end_alignment = 0;
cc26xx_bank->sector_length = sector_length;
for (int i = 0; i < num_sectors; i++) {
bank->sectors[i].offset = i * sector_length;
bank->sectors[i].size = sector_length;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 0;
}
/* We've successfully determined the stats on the flash bank */
cc26xx_bank->probed = true;
/* If we fall through to here, then all went well */
return ERROR_OK;
}
static int cc26xx_auto_probe(struct flash_bank *bank)
{
struct cc26xx_bank *cc26xx_bank = bank->driver_priv;
int retval = ERROR_OK;
if (!cc26xx_bank->probed)
retval = cc26xx_probe(bank);
return retval;
}
static int cc26xx_info(struct flash_bank *bank, struct command_invocation *cmd)
{
struct cc26xx_bank *cc26xx_bank = bank->driver_priv;
const char *device;
switch (cc26xx_bank->device_type) {
case CC26X0_TYPE:
device = "CC26x0";
break;
case CC26X1_TYPE:
device = "CC26x1";
break;
case CC13X0_TYPE:
device = "CC13x0";
break;
case CC13X2_TYPE:
device = "CC13x2";
break;
case CC26X2_TYPE:
device = "CC26x2";
break;
case CC26XX_NO_TYPE:
default:
device = "Unrecognized";
break;
}
command_print_sameline(cmd,
"%s device: ICEPick ID 0x%08" PRIx32 ", USER ID 0x%08" PRIx32 "\n",
device, cc26xx_bank->icepick_id, cc26xx_bank->user_id);
return ERROR_OK;
}
const struct flash_driver cc26xx_flash = {
.name = "cc26xx",
.flash_bank_command = cc26xx_flash_bank_command,
.erase = cc26xx_erase,
.write = cc26xx_write,
.read = default_flash_read,
.probe = cc26xx_probe,
.auto_probe = cc26xx_auto_probe,
.erase_check = default_flash_blank_check,
.info = cc26xx_info,
.free_driver_priv = default_flash_free_driver_priv,
};
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