ffe6bc8220
Add SWIM and STM8 to documentation and update TODO file. Introduce transport "swim" and command "swim newtap". Switch in swim.c from HLA API to the new SWIM API. Implement in stlink driver the SWIM APIs as wrappers of existing HLA functions. Remove any SWIM related reference from HLA files. Update stm8 config files and stlink-dap interface config file. Change-Id: I2bb9f58d52900f6eb4df05f979f7ef11fd439c24 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: http://openocd.zylin.com/5530 Tested-by: jenkins
154 lines
3.5 KiB
C
154 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
/*
|
|
* Copyright (C) 2020 by Antonio Borneo <borneo.antonio@gmail.com
|
|
*
|
|
* SWIM (Single Wire Interface Module) is a low-pin-count debug protocol
|
|
* used by STMicroelectronics MCU family STM8 and documented in UM470
|
|
* https://www.st.com/resource/en/user_manual/cd00173911.pdf
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "interface.h"
|
|
#include "swim.h"
|
|
#include <helper/command.h>
|
|
#include <transport/transport.h>
|
|
|
|
extern struct adapter_driver *adapter_driver;
|
|
|
|
int swim_system_reset(void)
|
|
{
|
|
assert(adapter_driver->swim_ops);
|
|
|
|
return adapter_driver->swim_ops->srst();
|
|
}
|
|
|
|
int swim_read_mem(uint32_t addr, uint32_t size, uint32_t count,
|
|
uint8_t *buffer)
|
|
{
|
|
assert(adapter_driver->swim_ops);
|
|
|
|
return adapter_driver->swim_ops->read_mem(addr, size, count, buffer);
|
|
}
|
|
|
|
int swim_write_mem(uint32_t addr, uint32_t size, uint32_t count,
|
|
const uint8_t *buffer)
|
|
{
|
|
assert(adapter_driver->swim_ops);
|
|
|
|
return adapter_driver->swim_ops->write_mem(addr, size, count, buffer);
|
|
}
|
|
|
|
int swim_reconnect(void)
|
|
{
|
|
assert(adapter_driver->swim_ops);
|
|
|
|
return adapter_driver->swim_ops->reconnect();
|
|
}
|
|
|
|
COMMAND_HANDLER(handle_swim_newtap_command)
|
|
{
|
|
struct jtag_tap *tap;
|
|
|
|
/*
|
|
* only need "basename" and "tap_type", but for backward compatibility
|
|
* ignore extra parameters
|
|
*/
|
|
if (CMD_ARGC < 2)
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
|
|
tap = calloc(1, sizeof(*tap));
|
|
if (!tap) {
|
|
LOG_ERROR("Out of memory");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
tap->chip = strdup(CMD_ARGV[0]);
|
|
tap->tapname = strdup(CMD_ARGV[1]);
|
|
tap->dotted_name = alloc_printf("%s.%s", CMD_ARGV[0], CMD_ARGV[1]);
|
|
if (!tap->chip || !tap->tapname || !tap->dotted_name) {
|
|
LOG_ERROR("Out of memory");
|
|
free(tap->dotted_name);
|
|
free(tap->tapname);
|
|
free(tap->chip);
|
|
free(tap);
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
LOG_DEBUG("Creating new SWIM \"tap\", Chip: %s, Tap: %s, Dotted: %s",
|
|
tap->chip, tap->tapname, tap->dotted_name);
|
|
|
|
/* default is enabled-after-reset */
|
|
tap->enabled = true;
|
|
|
|
jtag_tap_init(tap);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static const struct command_registration swim_transport_subcommand_handlers[] = {
|
|
{
|
|
.name = "newtap",
|
|
.handler = handle_swim_newtap_command,
|
|
.mode = COMMAND_CONFIG,
|
|
.help = "Create a new TAP instance named basename.tap_type, "
|
|
"and appends it to the scan chain.",
|
|
.usage = "basename tap_type",
|
|
},
|
|
COMMAND_REGISTRATION_DONE
|
|
};
|
|
|
|
static const struct command_registration swim_transport_command_handlers[] = {
|
|
{
|
|
.name = "swim",
|
|
.mode = COMMAND_ANY,
|
|
.help = "perform swim adapter actions",
|
|
.usage = "",
|
|
.chain = swim_transport_subcommand_handlers,
|
|
},
|
|
COMMAND_REGISTRATION_DONE
|
|
};
|
|
|
|
static int swim_transport_select(struct command_context *cmd_ctx)
|
|
{
|
|
LOG_DEBUG(__func__);
|
|
|
|
return register_commands(cmd_ctx, NULL, swim_transport_command_handlers);
|
|
}
|
|
|
|
static int swim_transport_init(struct command_context *cmd_ctx)
|
|
{
|
|
enum reset_types jtag_reset_config = jtag_get_reset_config();
|
|
|
|
LOG_DEBUG(__func__);
|
|
|
|
if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
|
|
if (jtag_reset_config & RESET_SRST_NO_GATING)
|
|
adapter_assert_reset();
|
|
else
|
|
LOG_WARNING("\'srst_nogate\' reset_config option is required");
|
|
} else
|
|
adapter_deassert_reset();
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static struct transport swim_transport = {
|
|
.name = "swim",
|
|
.select = swim_transport_select,
|
|
.init = swim_transport_init,
|
|
};
|
|
|
|
static void swim_constructor(void) __attribute__ ((constructor));
|
|
static void swim_constructor(void)
|
|
{
|
|
transport_register(&swim_transport);
|
|
}
|
|
|
|
bool transport_is_swim(void)
|
|
{
|
|
return get_current_transport() == &swim_transport;
|
|
}
|