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// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2016 by Matthias Welwarsky *
* *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdint.h>
#include "target/arm_adi_v5.h"
#include "target/arm.h"
#include "helper/list.h"
#include "helper/command.h"
#include "transport/transport.h"
#include "jtag/interface.h"
static LIST_HEAD(all_dap);
extern struct adapter_driver *adapter_driver;
/* DAP command support */
struct arm_dap_object {
struct list_head lh;
struct adiv5_dap dap;
char *name;
const struct swd_driver *swd;
};
static void dap_instance_init(struct adiv5_dap *dap)
{
int i;
/* Set up with safe defaults */
for (i = 0; i <= DP_APSEL_MAX; i++) {
dap->ap[i].dap = dap;
dap->ap[i].ap_num = DP_APSEL_INVALID;
/* memaccess_tck max is 255 */
dap->ap[i].memaccess_tck = 255;
/* Number of bits for tar autoincrement, impl. dep. at least 10 */
dap->ap[i].tar_autoincr_block = (1<<10);
/* default CSW value */
dap->ap[i].csw_default = CSW_AHB_DEFAULT;
dap->ap[i].cfg_reg = MEM_AP_REG_CFG_INVALID; /* mem_ap configuration reg (large physical addr, etc.) */
dap->ap[i].refcount = 0;
dap->ap[i].config_ap_never_release = false;
}
INIT_LIST_HEAD(&dap->cmd_journal);
INIT_LIST_HEAD(&dap->cmd_pool);
}
const char *adiv5_dap_name(struct adiv5_dap *self)
{
struct arm_dap_object *obj = container_of(self, struct arm_dap_object, dap);
return obj->name;
}
const struct swd_driver *adiv5_dap_swd_driver(struct adiv5_dap *self)
{
struct arm_dap_object *obj = container_of(self, struct arm_dap_object, dap);
return obj->swd;
}
struct adiv5_dap *adiv5_get_dap(struct arm_dap_object *obj)
{
return &obj->dap;
}
struct adiv5_dap *dap_instance_by_jim_obj(Jim_Interp *interp, Jim_Obj *o)
{
struct arm_dap_object *obj = NULL;
const char *name;
bool found = false;
name = Jim_GetString(o, NULL);
list_for_each_entry(obj, &all_dap, lh) {
if (!strcmp(name, obj->name)) {
found = true;
break;
}
}
if (found)
return &obj->dap;
return NULL;
}
static int dap_init_all(void)
{
struct arm_dap_object *obj;
int retval;
bool pre_connect = true;
LOG_DEBUG("Initializing all DAPs ...");
list_for_each_entry(obj, &all_dap, lh) {
struct adiv5_dap *dap = &obj->dap;
/* with hla, dap is just a dummy */
if (transport_is_hla())
continue;
/* skip taps that are disabled */
if (!dap->tap->enabled)
continue;
if (transport_is_swd()) {
dap->ops = &swd_dap_ops;
obj->swd = adapter_driver->swd_ops;
} else if (transport_is_dapdirect_swd()) {
dap->ops = adapter_driver->dap_swd_ops;
} else if (transport_is_dapdirect_jtag()) {
dap->ops = adapter_driver->dap_jtag_ops;
} else
dap->ops = &jtag_dp_ops;
if (dap->adi_version == 0) {
LOG_DEBUG("DAP %s configured by default to use ADIv5 protocol", jtag_tap_name(dap->tap));
dap->adi_version = 5;
} else {
LOG_DEBUG("DAP %s configured to use %s protocol by user cfg file", jtag_tap_name(dap->tap),
is_adiv6(dap) ? "ADIv6" : "ADIv5");
}
if (pre_connect && dap->ops->pre_connect_init) {
retval = dap->ops->pre_connect_init(dap);
if (retval != ERROR_OK)
return retval;
pre_connect = false;
}
retval = dap->ops->connect(dap);
if (retval != ERROR_OK)
return retval;
/* see if address size of ROM Table is greater than 32-bits */
if (is_adiv6(dap)) {
uint32_t dpidr1;
retval = dap->ops->queue_dp_read(dap, DP_DPIDR1, &dpidr1);
if (retval != ERROR_OK) {
LOG_ERROR("DAP read of DPIDR1 failed...");
return retval;
}
retval = dap_run(dap);
if (retval != ERROR_OK) {
LOG_ERROR("DAP read of DPIDR1 failed...");
return retval;
}
dap->asize = dpidr1 & DP_DPIDR1_ASIZE_MASK;
}
}
return ERROR_OK;
}
int dap_cleanup_all(void)
{
struct arm_dap_object *obj, *tmp;
struct adiv5_dap *dap;
list_for_each_entry_safe(obj, tmp, &all_dap, lh) {
dap = &obj->dap;
for (unsigned int i = 0; i <= DP_APSEL_MAX; i++) {
if (dap->ap[i].refcount != 0)
LOG_ERROR("BUG: refcount AP#%u still %u at exit", i, dap->ap[i].refcount);
}
if (dap->ops && dap->ops->quit)
dap->ops->quit(dap);
free(obj->name);
free(obj);
}
return ERROR_OK;
}
enum dap_cfg_param {
CFG_CHAIN_POSITION,
CFG_IGNORE_SYSPWRUPACK,
CFG_DP_ID,
CFG_INSTANCE_ID,
CFG_ADIV6,
CFG_ADIV5,
};
static const struct jim_nvp nvp_config_opts[] = {
{ .name = "-chain-position", .value = CFG_CHAIN_POSITION },
{ .name = "-ignore-syspwrupack", .value = CFG_IGNORE_SYSPWRUPACK },
{ .name = "-dp-id", .value = CFG_DP_ID },
{ .name = "-instance-id", .value = CFG_INSTANCE_ID },
{ .name = "-adiv6", .value = CFG_ADIV6 },
{ .name = "-adiv5", .value = CFG_ADIV5 },
{ .name = NULL, .value = -1 }
};
static int dap_configure(struct jim_getopt_info *goi, struct arm_dap_object *dap)
{
struct jim_nvp *n;
int e;
/* parse config ... */
while (goi->argc > 0) {
Jim_SetEmptyResult(goi->interp);
e = jim_getopt_nvp(goi, nvp_config_opts, &n);
if (e != JIM_OK) {
jim_getopt_nvp_unknown(goi, nvp_config_opts, 0);
return e;
}
switch (n->value) {
case CFG_CHAIN_POSITION: {
Jim_Obj *o_t;
e = jim_getopt_obj(goi, &o_t);
if (e != JIM_OK)
return e;
struct jtag_tap *tap;
tap = jtag_tap_by_jim_obj(goi->interp, o_t);
if (!tap) {
Jim_SetResultString(goi->interp, "-chain-position is invalid", -1);
return JIM_ERR;
}
dap->dap.tap = tap;
/* loop for more */
break;
}
case CFG_IGNORE_SYSPWRUPACK:
dap->dap.ignore_syspwrupack = true;
break;
case CFG_DP_ID: {
jim_wide w;
e = jim_getopt_wide(goi, &w);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi->interp,
"create %s: bad parameter %s",
dap->name, n->name);
return JIM_ERR;
}
if (w < 0 || w > DP_TARGETSEL_DPID_MASK) {
Jim_SetResultFormatted(goi->interp,
"create %s: %s out of range",
dap->name, n->name);
return JIM_ERR;
}
dap->dap.multidrop_targetsel =
(dap->dap.multidrop_targetsel & DP_TARGETSEL_INSTANCEID_MASK)
| (w & DP_TARGETSEL_DPID_MASK);
dap->dap.multidrop_dp_id_valid = true;
break;
}
case CFG_INSTANCE_ID: {
jim_wide w;
e = jim_getopt_wide(goi, &w);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi->interp,
"create %s: bad parameter %s",
dap->name, n->name);
return JIM_ERR;
}
if (w < 0 || w > 15) {
Jim_SetResultFormatted(goi->interp,
"create %s: %s out of range",
dap->name, n->name);
return JIM_ERR;
}
dap->dap.multidrop_targetsel =
(dap->dap.multidrop_targetsel & DP_TARGETSEL_DPID_MASK)
| ((w << DP_TARGETSEL_INSTANCEID_SHIFT) & DP_TARGETSEL_INSTANCEID_MASK);
dap->dap.multidrop_instance_id_valid = true;
break;
}
case CFG_ADIV6:
dap->dap.adi_version = 6;
break;
case CFG_ADIV5:
dap->dap.adi_version = 5;
break;
default:
break;
}
}
return JIM_OK;
}
static int dap_check_config(struct adiv5_dap *dap)
{
if (transport_is_jtag() || transport_is_dapdirect_jtag() || transport_is_hla())
return ERROR_OK;
struct arm_dap_object *obj;
bool new_multidrop = dap_is_multidrop(dap);
bool had_multidrop = new_multidrop;
uint32_t targetsel = dap->multidrop_targetsel;
unsigned int non_multidrop_count = had_multidrop ? 0 : 1;
list_for_each_entry(obj, &all_dap, lh) {
struct adiv5_dap *dap_it = &obj->dap;
if (transport_is_swd()) {
if (dap_is_multidrop(dap_it)) {
had_multidrop = true;
if (new_multidrop && dap_it->multidrop_targetsel == targetsel) {
uint32_t dp_id = targetsel & DP_TARGETSEL_DPID_MASK;
uint32_t instance_id = targetsel >> DP_TARGETSEL_INSTANCEID_SHIFT;
LOG_ERROR("%s and %s have the same multidrop selectors -dp-id 0x%08"
PRIx32 " and -instance-id 0x%" PRIx32,
obj->name, adiv5_dap_name(dap),
dp_id, instance_id);
return ERROR_FAIL;
}
} else {
non_multidrop_count++;
}
} else if (transport_is_dapdirect_swd()) {
non_multidrop_count++;
}
}
if (non_multidrop_count > 1) {
LOG_ERROR("Two or more SWD non multidrop DAPs are not supported");
return ERROR_FAIL;
}
if (had_multidrop && non_multidrop_count) {
LOG_ERROR("Mixing of SWD multidrop DAPs and non multidrop DAPs is not supported");
return ERROR_FAIL;
}
return ERROR_OK;
}
static int dap_create(struct jim_getopt_info *goi)
{
struct command_context *cmd_ctx;
static struct arm_dap_object *dap;
Jim_Obj *new_cmd;
Jim_Cmd *cmd;
const char *cp;
int e;
cmd_ctx = current_command_context(goi->interp);
assert(cmd_ctx);
if (goi->argc < 3) {
Jim_WrongNumArgs(goi->interp, 1, goi->argv, "?name? ..options...");
return JIM_ERR;
}
/* COMMAND */
jim_getopt_obj(goi, &new_cmd);
/* does this command exist? */
cmd = Jim_GetCommand(goi->interp, new_cmd, JIM_NONE);
if (cmd) {
cp = Jim_GetString(new_cmd, NULL);
Jim_SetResultFormatted(goi->interp, "Command: %s Exists", cp);
return JIM_ERR;
}
/* Create it */
dap = calloc(1, sizeof(struct arm_dap_object));
if (!dap)
return JIM_ERR;
dap_instance_init(&dap->dap);
cp = Jim_GetString(new_cmd, NULL);
dap->name = strdup(cp);
e = dap_configure(goi, dap);
if (e != JIM_OK)
goto err;
if (!dap->dap.tap) {
Jim_SetResultString(goi->interp, "-chain-position required when creating DAP", -1);
e = JIM_ERR;
goto err;
}
e = dap_check_config(&dap->dap);
if (e != ERROR_OK) {
e = JIM_ERR;
goto err;
}
struct command_registration dap_create_commands[] = {
{
.name = cp,
.mode = COMMAND_ANY,
.help = "dap instance command group",
.usage = "",
.chain = dap_instance_commands,
},
COMMAND_REGISTRATION_DONE
};
/* don't expose the instance commands when using hla */
if (transport_is_hla())
dap_create_commands[0].chain = NULL;
e = register_commands_with_data(cmd_ctx, NULL, dap_create_commands, dap);
if (e != ERROR_OK) {
e = JIM_ERR;
goto err;
}
list_add_tail(&dap->lh, &all_dap);
return JIM_OK;
err:
free(dap->name);
free(dap);
return e;
}
static int jim_dap_create(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
struct jim_getopt_info goi;
jim_getopt_setup(&goi, interp, argc - 1, argv + 1);
if (goi.argc < 2) {
Jim_WrongNumArgs(goi.interp, goi.argc, goi.argv,
"<name> [<dap_options> ...]");
return JIM_ERR;
}
return dap_create(&goi);
}
COMMAND_HANDLER(handle_dap_names)
{
if (CMD_ARGC != 0)
return ERROR_COMMAND_SYNTAX_ERROR;
struct arm_dap_object *obj;
list_for_each_entry(obj, &all_dap, lh)
command_print(CMD, "%s", obj->name);
return ERROR_OK;
}
COMMAND_HANDLER(handle_dap_init)
{
return dap_init_all();
}
COMMAND_HANDLER(handle_dap_info_command)
{
struct target *target = get_current_target(CMD_CTX);
struct arm *arm = target_to_arm(target);
struct adiv5_dap *dap = arm->dap;
uint64_t apsel;
if (!dap) {
LOG_ERROR("DAP instance not available. Probably a HLA target...");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
switch (CMD_ARGC) {
case 0:
apsel = dap->apsel;
break;
case 1:
if (!strcmp(CMD_ARGV[0], "root")) {
if (!is_adiv6(dap)) {
command_print(CMD, "Option \"root\" not allowed with ADIv5 DAP");
return ERROR_COMMAND_ARGUMENT_INVALID;
}
int retval = adiv6_dap_read_baseptr(CMD, dap, &apsel);
if (retval != ERROR_OK) {
command_print(CMD, "Failed reading DAP baseptr");
return retval;
}
break;
}
COMMAND_PARSE_NUMBER(u64, CMD_ARGV[0], apsel);
if (!is_ap_num_valid(dap, apsel))
return ERROR_COMMAND_SYNTAX_ERROR;
break;
default:
return ERROR_COMMAND_SYNTAX_ERROR;
}
struct adiv5_ap *ap = dap_get_ap(dap, apsel);
if (!ap) {
command_print(CMD, "Cannot get AP");
return ERROR_FAIL;
}
int retval = dap_info_command(CMD, ap);
dap_put_ap(ap);
return retval;
}
static const struct command_registration dap_subcommand_handlers[] = {
{
.name = "create",
.mode = COMMAND_ANY,
.jim_handler = jim_dap_create,
.usage = "name '-chain-position' name",
.help = "Creates a new DAP instance",
},
{
.name = "names",
.mode = COMMAND_ANY,
.handler = handle_dap_names,
.usage = "",
.help = "Lists all registered DAP instances by name",
},
{
.name = "init",
.mode = COMMAND_ANY,
.handler = handle_dap_init,
.usage = "",
.help = "Initialize all registered DAP instances"
},
{
.name = "info",
.handler = handle_dap_info_command,
.mode = COMMAND_EXEC,
.help = "display ROM table for specified MEM-AP (default MEM-AP of current target) "
"or the ADIv6 root ROM table of current target's DAP",
.usage = "[ap_num | 'root']",
},
COMMAND_REGISTRATION_DONE
};
static const struct command_registration dap_commands[] = {
{
.name = "dap",
.mode = COMMAND_CONFIG,
.help = "DAP commands",
.chain = dap_subcommand_handlers,
.usage = "",
},
COMMAND_REGISTRATION_DONE
};
int dap_register_commands(struct command_context *cmd_ctx)
{
return register_commands(cmd_ctx, NULL, dap_commands);
}
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