#include <helper/time_support.h>
#include <jtag/interface.h>
+#include <transport/transport.h>
#include "bitbang.h"
/*
*
* Assume here that there will be less than 10000 gpios on a system
*/
-static int is_gpio_valid(int gpio)
+static bool is_gpio_valid(int gpio)
{
return gpio >= 0 && gpio < 10000;
}
snprintf(gpiostr, sizeof(gpiostr), "%d", gpio);
if (open_write_close("/sys/class/gpio/unexport", gpiostr) < 0)
LOG_ERROR("Couldn't unexport gpio %d", gpio);
-
- return;
}
/*
return buf[0] != '0';
}
-static void sysfsgpio_swdio_write(int swclk, int swdio)
+static int sysfsgpio_swd_write(int swclk, int swdio)
{
const char one[] = "1";
const char zero[] = "0";
last_swdio = swdio;
last_swclk = swclk;
last_stored = true;
+
+ return ERROR_OK;
}
/*
*/
static int sysfsgpio_write(int tck, int tms, int tdi)
{
- if (swd_mode) {
- sysfsgpio_swdio_write(tck, tdi);
- return ERROR_OK;
- }
-
const char one[] = "1";
const char zero[] = "0";
.write = sysfsgpio_write,
.swdio_read = sysfsgpio_swdio_read,
.swdio_drive = sysfsgpio_swdio_drive,
+ .swd_write = sysfsgpio_swd_write,
.blink = 0
};
static void cleanup_all_fds(void)
{
- cleanup_fd(tck_fd, tck_gpio);
- cleanup_fd(tms_fd, tms_gpio);
- cleanup_fd(tdi_fd, tdi_gpio);
- cleanup_fd(tdo_fd, tdo_gpio);
- cleanup_fd(trst_fd, trst_gpio);
+ if (transport_is_jtag()) {
+ cleanup_fd(tck_fd, tck_gpio);
+ cleanup_fd(tms_fd, tms_gpio);
+ cleanup_fd(tdi_fd, tdi_gpio);
+ cleanup_fd(tdo_fd, tdo_gpio);
+ cleanup_fd(trst_fd, trst_gpio);
+ }
+ if (transport_is_swd()) {
+ cleanup_fd(swclk_fd, swclk_gpio);
+ cleanup_fd(swdio_fd, swdio_gpio);
+ }
cleanup_fd(srst_fd, srst_gpio);
- cleanup_fd(swclk_fd, swclk_gpio);
- cleanup_fd(swdio_fd, swdio_gpio);
}
static bool sysfsgpio_jtag_mode_possible(void)
{
if (!is_gpio_valid(tck_gpio))
- return 0;
+ return false;
if (!is_gpio_valid(tms_gpio))
- return 0;
+ return false;
if (!is_gpio_valid(tdi_gpio))
- return 0;
+ return false;
if (!is_gpio_valid(tdo_gpio))
- return 0;
- return 1;
+ return false;
+ return true;
}
static bool sysfsgpio_swd_mode_possible(void)
{
if (!is_gpio_valid(swclk_gpio))
- return 0;
+ return false;
if (!is_gpio_valid(swdio_gpio))
- return 0;
- return 1;
+ return false;
+ return true;
}
static int sysfsgpio_init(void)
LOG_INFO("SysfsGPIO JTAG/SWD bitbang driver");
- if (sysfsgpio_jtag_mode_possible()) {
- if (sysfsgpio_swd_mode_possible())
- LOG_INFO("JTAG and SWD modes enabled");
- else
- LOG_INFO("JTAG only mode enabled (specify swclk and swdio gpio to add SWD mode)");
- } else if (sysfsgpio_swd_mode_possible()) {
- LOG_INFO("SWD only mode enabled (specify tck, tms, tdi and tdo gpios to add JTAG mode)");
- } else {
- LOG_ERROR("Require tck, tms, tdi and tdo gpios for JTAG mode and/or swclk and swdio gpio for SWD mode");
- return ERROR_JTAG_INIT_FAILED;
- }
-
-
/*
* Configure TDO as an input, and TDI, TCK, TMS, TRST, SRST
* as outputs. Drive TDI and TCK low, and TMS/TRST/SRST high.
* For SWD, SWCLK and SWDIO are configures as output high.
*/
- if (tck_gpio >= 0) {
+
+ if (transport_is_jtag()) {
+ if (!sysfsgpio_jtag_mode_possible()) {
+ LOG_ERROR("Require tck, tms, tdi and tdo gpios for JTAG mode");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
tck_fd = setup_sysfs_gpio(tck_gpio, 1, 0);
if (tck_fd < 0)
goto out_error;
- }
- if (tms_gpio >= 0) {
tms_fd = setup_sysfs_gpio(tms_gpio, 1, 1);
if (tms_fd < 0)
goto out_error;
- }
- if (tdi_gpio >= 0) {
tdi_fd = setup_sysfs_gpio(tdi_gpio, 1, 0);
if (tdi_fd < 0)
goto out_error;
- }
- if (tdo_gpio >= 0) {
tdo_fd = setup_sysfs_gpio(tdo_gpio, 0, 0);
if (tdo_fd < 0)
goto out_error;
- }
- /* assume active low*/
- if (trst_gpio >= 0) {
- trst_fd = setup_sysfs_gpio(trst_gpio, 1, 1);
- if (trst_fd < 0)
- goto out_error;
+ /* assume active low*/
+ if (trst_gpio >= 0) {
+ trst_fd = setup_sysfs_gpio(trst_gpio, 1, 1);
+ if (trst_fd < 0)
+ goto out_error;
+ }
}
- /* assume active low*/
- if (srst_gpio >= 0) {
- srst_fd = setup_sysfs_gpio(srst_gpio, 1, 1);
- if (srst_fd < 0)
- goto out_error;
- }
+ if (transport_is_swd()) {
+ if (!sysfsgpio_swd_mode_possible()) {
+ LOG_ERROR("Require swclk and swdio gpio for SWD mode");
+ return ERROR_JTAG_INIT_FAILED;
+ }
- if (swclk_gpio >= 0) {
swclk_fd = setup_sysfs_gpio(swclk_gpio, 1, 0);
if (swclk_fd < 0)
goto out_error;
- }
- if (swdio_gpio >= 0) {
swdio_fd = setup_sysfs_gpio(swdio_gpio, 1, 0);
if (swdio_fd < 0)
goto out_error;
}
- if (sysfsgpio_swd_mode_possible()) {
- if (swd_mode)
- bitbang_swd_switch_seq(JTAG_TO_SWD);
- else
- bitbang_swd_switch_seq(SWD_TO_JTAG);
+ /* assume active low*/
+ if (srst_gpio >= 0) {
+ srst_fd = setup_sysfs_gpio(srst_gpio, 1, 1);
+ if (srst_fd < 0)
+ goto out_error;
}
return ERROR_OK;
cleanup_all_fds();
return ERROR_OK;
}
-