--- /dev/null
+/*
+ * Copyright (C) 2019, STMicroelectronics - All Rights Reserved
+ * Author(s): Antonio Borneo <borneo.antonio@gmail.com> for STMicroelectronics
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @file
+ * Utilities to support in-circuit debuggers that provide APIs to access
+ * directly ARM DAP, hiding the access to the underlining transport used
+ * for the physical connection (either JTAG or SWD).
+ * E.g. STMicroelectronics ST-Link/V2 (from version V2J24) and STLINK-V3.
+ *
+ * Single-DAP support only.
+ *
+ * For details, see "ARM IHI 0031A"
+ * ARM Debug Interface v5 Architecture Specification
+ *
+ * FIXME: in JTAG mode, trst is not managed
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <jtag/interface.h>
+#include <jtag/tcl.h>
+#include <transport/transport.h>
+
+COMMAND_HANDLER(dapdirect_jtag_empty_command)
+{
+ LOG_DEBUG("dapdirect_jtag_empty_command(\"%s\")", CMD_NAME);
+
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(dapdirect_jtag_reset_command)
+{
+ enum reset_types jtag_reset_config = jtag_get_reset_config();
+
+ /*
+ * in case the adapter has not already handled asserting srst
+ * we will attempt it again
+ */
+ if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
+ if (jtag_reset_config & RESET_SRST_NO_GATING) {
+ adapter_assert_reset();
+ return ERROR_OK;
+ }
+ LOG_WARNING("\'srst_nogate\' reset_config option is required");
+ }
+ adapter_deassert_reset();
+ return ERROR_OK;
+}
+
+static const struct command_registration dapdirect_jtag_subcommand_handlers[] = {
+ {
+ .name = "newtap",
+ .mode = COMMAND_CONFIG,
+ .jim_handler = jim_jtag_newtap,
+ .help = "declare a new TAP"
+ },
+ {
+ .name = "init",
+ .mode = COMMAND_ANY,
+ .handler = dapdirect_jtag_empty_command,
+ .usage = ""
+ },
+ {
+ .name = "arp_init",
+ .mode = COMMAND_ANY,
+ .handler = dapdirect_jtag_empty_command,
+ .usage = ""
+ },
+ {
+ .name = "arp_init-reset",
+ .mode = COMMAND_ANY,
+ .handler = dapdirect_jtag_reset_command,
+ .usage = ""
+ },
+ {
+ .name = "tapisenabled",
+ .mode = COMMAND_EXEC,
+ .jim_handler = jim_jtag_tap_enabler,
+ },
+ {
+ .name = "tapenable",
+ .mode = COMMAND_EXEC,
+ .jim_handler = jim_jtag_tap_enabler,
+ },
+ {
+ .name = "tapdisable",
+ .mode = COMMAND_EXEC,
+ .handler = dapdirect_jtag_empty_command,
+ .usage = "",
+ },
+ {
+ .name = "configure",
+ .mode = COMMAND_ANY,
+ .handler = dapdirect_jtag_empty_command,
+ .usage = "",
+ },
+ {
+ .name = "cget",
+ .mode = COMMAND_EXEC,
+ .jim_handler = jim_jtag_configure,
+ },
+ {
+ .name = "names",
+ .mode = COMMAND_ANY,
+ .handler = dapdirect_jtag_empty_command,
+ .usage = "",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+static const struct command_registration dapdirect_jtag_handlers[] = {
+ {
+ .name = "jtag",
+ .mode = COMMAND_ANY,
+ .chain = dapdirect_jtag_subcommand_handlers,
+ .usage = "",
+ },
+ {
+ .name = "jtag_ntrst_delay",
+ .mode = COMMAND_ANY,
+ .handler = dapdirect_jtag_empty_command,
+ .usage = "",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+static const struct command_registration dapdirect_swd_subcommand_handlers[] = {
+ {
+ .name = "newdap",
+ .mode = COMMAND_CONFIG,
+ .jim_handler = jim_jtag_newtap,
+ .help = "declare a new SWD DAP",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+static const struct command_registration dapdirect_swd_handlers[] = {
+ {
+ .name = "swd",
+ .mode = COMMAND_ANY,
+ .help = "SWD command group",
+ .usage = "",
+ .chain = dapdirect_swd_subcommand_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+static int dapdirect_jtag_select(struct command_context *ctx)
+{
+ LOG_DEBUG("dapdirect_jtag_select()");
+
+ return register_commands(ctx, NULL, dapdirect_jtag_handlers);
+}
+
+static int dapdirect_swd_select(struct command_context *ctx)
+{
+ LOG_DEBUG("dapdirect_swd_select()");
+
+ return register_commands(ctx, NULL, dapdirect_swd_handlers);
+}
+
+static int dapdirect_init(struct command_context *ctx)
+{
+ LOG_DEBUG("dapdirect_init()");
+
+ adapter_deassert_reset();
+ return ERROR_OK;
+}
+
+static struct transport dapdirect_jtag_transport = {
+ .name = "dapdirect_jtag",
+ .select = dapdirect_jtag_select,
+ .init = dapdirect_init,
+};
+
+static struct transport dapdirect_swd_transport = {
+ .name = "dapdirect_swd",
+ .select = dapdirect_swd_select,
+ .init = dapdirect_init,
+};
+
+static void dapdirect_constructor(void) __attribute__((constructor));
+static void dapdirect_constructor(void)
+{
+ transport_register(&dapdirect_jtag_transport);
+ transport_register(&dapdirect_swd_transport);
+}
+
+/**
+ * Returns true if the current debug session
+ * is using JTAG as its transport.
+ */
+bool transport_is_dapdirect_jtag(void)
+{
+ return get_current_transport() == &dapdirect_jtag_transport;
+}
+
+/**
+ * Returns true if the current debug session
+ * is using SWD as its transport.
+ */
+bool transport_is_dapdirect_swd(void)
+{
+ return get_current_transport() == &dapdirect_swd_transport;
+}
projects / fw / openocd / commitdiff