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jtag/core: get rid of variable 'jtag' 

The variable 'jtag' is set to 'adapter_driver' during adapter
initialization and is used:
- to check if adapter has been initialized;
- as local copy of adapter_driver.

Introduce a static flag to check if the adapter has been already
initialized and a convenience test function.
Use the test function and the original value of adapter_driver in
the code and drop the variable 'jtag'.

Change-Id: I1b1c54d3b36d7b60390985d787c8449432788141
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6639
Tested-by: jenkins
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
This commit is contained in:
Antonio Borneo 2021-10-07 10:37:06 +02:00
parent be57b0ab84
commit a9d0386411
1 changed files with 36 additions and 32 deletions
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68
src/jtag/core.c
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@ -129,11 +129,15 @@ static int speed_khz;
static int rclk_fallback_speed_khz;
static enum {CLOCK_MODE_UNSELECTED, CLOCK_MODE_KHZ, CLOCK_MODE_RCLK} clock_mode;
/* FIXME: change name to this variable, it is not anymore JTAG only */
static struct adapter_driver *jtag;
extern struct adapter_driver *adapter_driver;
static bool adapter_initialized;
static bool is_adapter_initialized(void)
{
return adapter_initialized;
}
void jtag_set_flush_queue_sleep(int ms)
{
jtag_flush_queue_sleep = ms;
@ -505,7 +509,7 @@ int jtag_add_tms_seq(unsigned nbits, const uint8_t *seq, enum tap_state state)
{
int retval;
if (!(jtag->jtag_ops->supported & DEBUG_CAP_TMS_SEQ))
if (!(adapter_driver->jtag_ops->supported & DEBUG_CAP_TMS_SEQ))
return ERROR_JTAG_NOT_IMPLEMENTED;
jtag_checks();
@ -627,7 +631,7 @@ static int adapter_system_reset(int req_srst)
/* Maybe change SRST signal state */
if (jtag_srst != req_srst) {
retval = jtag->reset(0, req_srst);
retval = adapter_driver->reset(0, req_srst);
if (retval != ERROR_OK) {
LOG_ERROR("SRST error");
return ERROR_FAIL;
@ -764,7 +768,7 @@ void jtag_add_reset(int req_tlr_or_trst, int req_srst)
int new_srst = 0;
int new_trst = 0;
if (!jtag->reset) {
if (!adapter_driver->reset) {
legacy_jtag_add_reset(req_tlr_or_trst, req_srst);
return;
}
@ -813,7 +817,7 @@ void jtag_add_reset(int req_tlr_or_trst, int req_srst)
/* guarantee jtag queue empty before changing reset status */
jtag_execute_queue();
retval = jtag->reset(new_trst, new_srst);
retval = adapter_driver->reset(new_trst, new_srst);
if (retval != ERROR_OK) {
jtag_set_error(retval);
LOG_ERROR("TRST/SRST error");
@ -933,7 +937,7 @@ void jtag_check_value_mask(struct scan_field *field, uint8_t *value, uint8_t *ma
int default_interface_jtag_execute_queue(void)
{
if (!jtag) {
if (!is_adapter_initialized()) {
LOG_ERROR("No JTAG interface configured yet. "
"Issue 'init' command in startup scripts "
"before communicating with targets.");
@ -949,11 +953,11 @@ int default_interface_jtag_execute_queue(void)
* The fix can be applied immediately after next release (v0.11.0 ?)
*/
LOG_ERROR("JTAG API jtag_execute_queue() called on non JTAG interface");
if (!jtag->jtag_ops || !jtag->jtag_ops->execute_queue)
if (!adapter_driver->jtag_ops || !adapter_driver->jtag_ops->execute_queue)
return ERROR_OK;
}
int result = jtag->jtag_ops->execute_queue();
int result = adapter_driver->jtag_ops->execute_queue();
struct jtag_command *cmd = jtag_command_queue;
while (debug_level >= LOG_LVL_DEBUG_IO && cmd) {
@ -1508,7 +1512,7 @@ void jtag_tap_free(struct jtag_tap *tap)
*/
int adapter_init(struct command_context *cmd_ctx)
{
if (jtag)
if (is_adapter_initialized())
return ERROR_OK;
if (!adapter_driver) {
@ -1522,9 +1526,9 @@ int adapter_init(struct command_context *cmd_ctx)
retval = adapter_driver->init();
if (retval != ERROR_OK)
return retval;
jtag = adapter_driver;
adapter_initialized = true;
if (!jtag->speed) {
if (!adapter_driver->speed) {
LOG_INFO("This adapter doesn't support configurable speed");
return ERROR_OK;
}
@ -1541,7 +1545,7 @@ int adapter_init(struct command_context *cmd_ctx)
retval = jtag_get_speed(&jtag_speed_var);
if (retval != ERROR_OK)
return retval;
retval = jtag->speed(jtag_speed_var);
retval = adapter_driver->speed(jtag_speed_var);
if (retval != ERROR_OK)
return retval;
retval = jtag_get_speed_readable(&actual_khz);
@ -1643,9 +1647,9 @@ int jtag_init_inner(struct command_context *cmd_ctx)
int adapter_quit(void)
{
if (jtag && jtag->quit) {
if (is_adapter_initialized() && adapter_driver->quit) {
/* close the JTAG interface */
int result = jtag->quit();
int result = adapter_driver->quit();
if (result != ERROR_OK)
LOG_ERROR("failed: %d", result);
}
@ -1776,15 +1780,15 @@ static int adapter_khz_to_speed(unsigned khz, int *speed)
{
LOG_DEBUG("convert khz to interface specific speed value");
speed_khz = khz;
if (!jtag)
if (!is_adapter_initialized())
return ERROR_OK;
LOG_DEBUG("have interface set up");
if (!jtag->khz) {
if (!adapter_driver->khz) {
LOG_ERROR("Translation from khz to jtag_speed not implemented");
return ERROR_FAIL;
}
int speed_div1;
int retval = jtag->khz(jtag_get_speed_khz(), &speed_div1);
int retval = adapter_driver->khz(jtag_get_speed_khz(), &speed_div1);
if (retval != ERROR_OK)
return retval;
*speed = speed_div1;
@ -1805,7 +1809,7 @@ static int jtag_set_speed(int speed)
{
/* this command can be called during CONFIG,
* in which case jtag isn't initialized */
return jtag ? jtag->speed(speed) : ERROR_OK;
return is_adapter_initialized() ? adapter_driver->speed(speed) : ERROR_OK;
}
int jtag_config_khz(unsigned khz)
@ -1849,13 +1853,13 @@ int jtag_get_speed_readable(int *khz)
int retval = jtag_get_speed(&jtag_speed_var);
if (retval != ERROR_OK)
return retval;
if (!jtag)
if (!is_adapter_initialized())
return ERROR_OK;
if (!jtag->speed_div) {
if (!adapter_driver->speed_div) {
LOG_ERROR("Translation from jtag_speed to khz not implemented");
return ERROR_FAIL;
}
return jtag->speed_div(jtag_speed_var, khz);
return adapter_driver->speed_div(jtag_speed_var, khz);
}
void jtag_set_verify(bool enable)
@ -1880,14 +1884,14 @@ bool jtag_will_verify_capture_ir(void)
int jtag_power_dropout(int *dropout)
{
if (!jtag) {
if (!is_adapter_initialized()) {
/* TODO: as the jtag interface is not valid all
* we can do at the moment is exit OpenOCD */
LOG_ERROR("No Valid JTAG Interface Configured.");
exit(-1);
}
if (jtag->power_dropout)
return jtag->power_dropout(dropout);
if (adapter_driver->power_dropout)
return adapter_driver->power_dropout(dropout);
*dropout = 0; /* by default we can't detect power dropout */
return ERROR_OK;
@ -1895,8 +1899,8 @@ int jtag_power_dropout(int *dropout)
int jtag_srst_asserted(int *srst_asserted)
{
if (jtag->srst_asserted)
return jtag->srst_asserted(srst_asserted);
if (adapter_driver->srst_asserted)
return adapter_driver->srst_asserted(srst_asserted);
*srst_asserted = 0; /* by default we can't detect srst asserted */
return ERROR_OK;
@ -2089,8 +2093,8 @@ int adapter_config_trace(bool enabled, enum tpiu_pin_protocol pin_protocol,
uint32_t port_size, unsigned int *trace_freq,
unsigned int traceclkin_freq, uint16_t *prescaler)
{
if (jtag->config_trace) {
return jtag->config_trace(enabled, pin_protocol, port_size, trace_freq,
if (adapter_driver->config_trace) {
return adapter_driver->config_trace(enabled, pin_protocol, port_size, trace_freq,
traceclkin_freq, prescaler);
} else if (enabled) {
LOG_ERROR("The selected interface does not support tracing");
@ -2102,8 +2106,8 @@ int adapter_config_trace(bool enabled, enum tpiu_pin_protocol pin_protocol,
int adapter_poll_trace(uint8_t *buf, size_t *size)
{
if (jtag->poll_trace)
return jtag->poll_trace(buf, size);
if (adapter_driver->poll_trace)
return adapter_driver->poll_trace(buf, size);
return ERROR_FAIL;
}