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transport selection tweaks

* Bugfix and simplify legacy jtag-only defaulting
* Make "dummy" declare its jtag-only nature
* likewise update ft2232
* warn if selection is _required_ (multi-transport adapters),

fixes the "only ft2232 works" bug for at least dummy, with
other drivers going the "legacy" path (submit patches).

Signed-off-by: David Brownell <db@helium.(none)>
tags/v0.5.0-rc1
David Brownell 13 years ago
committed by David Brownell
parent
commit
e8445c9c9f
5 changed files with 39 additions and 15 deletions
  1. +22
    -2
      src/jtag/adapter.c
  2. +1
    -0
      src/jtag/drivers/dummy.c
  3. +2
    -11
      src/jtag/drivers/ft2232.c
  4. +5
    -0
      src/jtag/interface.h
  5. +9
    -2
      src/jtag/transport.c

+ 22
- 2
src/jtag/adapter.c View File

@@ -93,6 +93,9 @@ static int default_srst_asserted(int *srst_asserted)
return ERROR_OK;
}

const char *jtag_only[] = { "jtag", NULL, };


COMMAND_HANDLER(interface_transport_command)
{
char **transports;
@@ -130,6 +133,8 @@ COMMAND_HANDLER(handle_interface_list_command)

COMMAND_HANDLER(handle_interface_command)
{
int retval;

/* check whether the interface is already configured */
if (jtag_interface)
{
@@ -148,7 +153,7 @@ COMMAND_HANDLER(handle_interface_command)

if (NULL != jtag_interfaces[i]->commands)
{
int retval = register_commands(CMD_CTX, NULL,
retval = register_commands(CMD_CTX, NULL,
jtag_interfaces[i]->commands);
if (ERROR_OK != retval)
return retval;
@@ -156,6 +161,20 @@ COMMAND_HANDLER(handle_interface_command)

jtag_interface = jtag_interfaces[i];

/* LEGACY SUPPORT ... adapter drivers must declare what
* transports they allow. Until they all do so, assume
* the legacy drivers are JTAG-only
*/
if (!jtag_interface->transports)
LOG_WARNING("Adapter driver '%s' did not declare "
"which transports it allows; assuming"
"legacy JTAG-only", jtag_interface->name);
retval = allow_transports(CMD_CTX,
jtag_interface->transports
? : jtag_only);
if (ERROR_OK != retval)
return retval;

if (jtag_interface->khz == NULL)
jtag_interface->khz = default_khz;
if (jtag_interface->speed_div == NULL)
@@ -171,7 +190,8 @@ COMMAND_HANDLER(handle_interface_command)
/* no valid interface was found (i.e. the configuration option,
* didn't match one of the compiled-in interfaces
*/
LOG_ERROR("The specified debug interface was not found (%s)", CMD_ARGV[0]);
LOG_ERROR("The specified debug interface was not found (%s)",
CMD_ARGV[0]);
CALL_COMMAND_HANDLER(handle_interface_list_command);
return ERROR_JTAG_INVALID_INTERFACE;
}


+ 1
- 0
src/jtag/drivers/dummy.c View File

@@ -166,6 +166,7 @@ struct jtag_interface dummy_interface = {

.supported = DEBUG_CAP_TMS_SEQ,
.commands = dummy_command_handlers,
.transports = jtag_only,

.execute_queue = &bitbang_execute_queue,



+ 2
- 11
src/jtag/drivers/ft2232.c View File

@@ -168,7 +168,6 @@ struct ft2232_layout {
void (*reset)(int trst, int srst);
void (*blink)(void);
int channel;
const char **transports;
};

/* init procedures for supported layouts */
@@ -213,11 +212,8 @@ static void signalyzer_h_blink(void);
static void ktlink_blink(void);

/* common transport support options */
static const char *jtag_only[] = { "jtag", NULL };


//static const char *jtag_and_swd[] = { "jtag", "swd", NULL };
#define jtag_and_swd NULL

static const struct ft2232_layout ft2232_layouts[] =
{
@@ -244,12 +240,10 @@ static const struct ft2232_layout ft2232_layouts[] =
{ .name = "evb_lm3s811",
.init = lm3s811_jtag_init,
.reset = ftx23_reset,
.transports = jtag_and_swd,
},
{ .name = "luminary_icdi",
.init = icdi_jtag_init,
.reset = ftx23_reset,
.transports = jtag_and_swd,
},
{ .name = "olimex-jtag",
.init = olimex_jtag_init,
@@ -3206,11 +3200,7 @@ COMMAND_HANDLER(ft2232_handle_layout_command)
for (const struct ft2232_layout *l = ft2232_layouts; l->name; l++) {
if (strcmp(l->name, CMD_ARGV[0]) == 0) {
layout = l;
/* This may also select the transport
* if we only support one of them.
*/
return allow_transports(CMD_CTX,
l->transports ? : jtag_only);
return ERROR_OK;
}
}

@@ -4372,6 +4362,7 @@ struct jtag_interface ft2232_interface = {
.name = "ft2232",
.supported = DEBUG_CAP_TMS_SEQ,
.commands = ft2232_command_handlers,
.transports = jtag_only,

.init = ft2232_init,
.quit = ft2232_quit,


+ 5
- 0
src/jtag/interface.h View File

@@ -206,6 +206,9 @@ struct jtag_interface {
unsigned supported;
#define DEBUG_CAP_TMS_SEQ (1 << 0)

/** transports supported in C code (NULL terminated vector) */
const char **transports;

/**
* Execute queued commands.
* @returns ERROR_OK on success, or an error code on failure.
@@ -289,4 +292,6 @@ struct jtag_interface {
};


extern const char *jtag_only[];

#endif // OPENOCD_JTAG_INTERFACE_H

+ 9
- 2
src/jtag/transport.c View File

@@ -101,6 +101,10 @@ int allow_transports(struct command_context *ctx, const char **vector)
*
* REVISIT should we validate that? and insist there's
* at least one non-NULL element in that list?
*
* ... allow removals, e.g. external strapping prevents use
* of one transport; C code should be definitive about what
* can be used when all goes well.
*/
if (allowed_transports != NULL || session) {
LOG_ERROR("Can't modify the set of allowed transports.");
@@ -116,6 +120,8 @@ int allow_transports(struct command_context *ctx, const char **vector)
vector[0]);
return transport_select(ctx, vector [0]);
} else {
/* guard against user config errors */
LOG_WARNING("must select a transport.");
while (*vector)
LOG_DEBUG("allow transport '%s'", *vector++);
return ERROR_OK;
@@ -304,13 +310,14 @@ COMMAND_HANDLER(handle_transport_select)
/* Is this transport supported by our debug adapter?
* Example, "JTAG-only" means SWD is not supported.
*
* NOTE: requires adapter to have been set up, including
* declaring transport via C code or Tcl script.
* NOTE: requires adapter to have been set up, with
* transports declared via C.
*/
if (!allowed_transports) {
LOG_ERROR("Debug adapter doesn't support any transports?");
return ERROR_FAIL;
}

for (unsigned i = 0; allowed_transports[i]; i++) {

if (strcmp(allowed_transports[i], CMD_ARGV[0]) == 0)


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