#include <jtag/interface.h>
#include <jtag/commands.h>
-#include "usb_common.h"
+#include <jtag/swd.h>
+#include <libusb.h>
#include "versaloon/versaloon_include.h"
#include "versaloon/versaloon.h"
static void vsllink_tap_append_scan(int length, uint8_t *buffer,
struct scan_command *command);
+/* VSLLink SWD functions */
+static int_least32_t vsllink_swd_frequency(struct adiv5_dap *dap,
+ int_least32_t hz);
+static int vsllink_swd_switch_seq(struct adiv5_dap *dap,
+ enum swd_special_seq seq);
+
/* VSLLink lowlevel functions */
struct vsllink {
- struct usb_dev_handle *usb_handle;
+ struct libusb_context *libusb_ctx;
+ struct libusb_device_handle *usb_device_handle;
};
-static struct vsllink *vsllink_usb_open(void);
+static int vsllink_usb_open(struct vsllink *vsllink);
static void vsllink_usb_close(struct vsllink *vsllink);
#if defined _DEBUG_JTAG_IO_
static uint8_t *tdi_buffer;
static uint8_t *tdo_buffer;
-struct vsllink *vsllink_handle;
+static bool swd_mode;
+
+static struct vsllink *vsllink_handle;
static int vsllink_execute_queue(void)
{
static int vsllink_speed(int speed)
{
+ if (swd_mode) {
+ vsllink_swd_frequency(NULL, speed * 1000);
+ return ERROR_OK;
+ }
+
versaloon_interface.adaptors.jtag_raw.config(0, (uint16_t)speed);
return versaloon_interface.adaptors.peripheral_commit();
}
versaloon_interface.adaptors.gpio.config(0, GPIO_SRST | GPIO_TRST,
0, 0, GPIO_SRST | GPIO_TRST);
versaloon_interface.adaptors.gpio.fini(0);
- versaloon_interface.adaptors.jtag_raw.fini(0);
+
+ if (swd_mode)
+ versaloon_interface.adaptors.swd.fini(0);
+ else
+ versaloon_interface.adaptors.jtag_raw.fini(0);
+
versaloon_interface.adaptors.peripheral_commit();
versaloon_interface.fini();
vsllink_free_buffer();
vsllink_usb_close(vsllink_handle);
+ free(vsllink_handle);
+
return ERROR_OK;
}
-static int vsllink_init(void)
+static int vsllink_interface_init(void)
{
- vsllink_handle = vsllink_usb_open();
- if (vsllink_handle == 0) {
+ vsllink_handle = malloc(sizeof(struct vsllink));
+ if (NULL == vsllink_handle) {
+ LOG_ERROR("unable to allocate memory");
+ return ERROR_FAIL;
+ }
+
+ libusb_init(&vsllink_handle->libusb_ctx);
+
+ if (ERROR_OK != vsllink_usb_open(vsllink_handle)) {
LOG_ERROR("Can't find USB JTAG Interface!" \
"Please check connection and permissions.");
return ERROR_JTAG_INIT_FAILED;
LOG_DEBUG("vsllink found on %04X:%04X",
versaloon_interface.usb_setting.vid,
versaloon_interface.usb_setting.pid);
- versaloon_usb_device_handle = vsllink_handle->usb_handle;
+ versaloon_usb_device_handle = vsllink_handle->usb_device_handle;
if (ERROR_OK != versaloon_interface.init())
return ERROR_FAIL;
return ERROR_FAIL;
}
- /* malloc buffer size for tap */
- tap_buffer_size = versaloon_interface.usb_setting.buf_size / 2 - 32;
- vsllink_free_buffer();
- tdi_buffer = malloc(tap_buffer_size);
- tdo_buffer = malloc(tap_buffer_size);
- tms_buffer = malloc(tap_buffer_size);
- if ((NULL == tdi_buffer) || (NULL == tdo_buffer) || (NULL == tms_buffer)) {
- vsllink_quit();
- return ERROR_FAIL;
- }
+ return ERROR_OK;
+}
+
+static int vsllink_init(void)
+{
+ int retval = vsllink_interface_init();
+ if (ERROR_OK != retval)
+ return retval;
- versaloon_interface.adaptors.jtag_raw.init(0);
- versaloon_interface.adaptors.jtag_raw.config(0, jtag_get_speed_khz());
versaloon_interface.adaptors.gpio.init(0);
- versaloon_interface.adaptors.gpio.config(0, GPIO_SRST | GPIO_TRST,
- GPIO_TRST, GPIO_SRST, GPIO_SRST);
+ versaloon_interface.adaptors.gpio.config(0, GPIO_SRST, 0, GPIO_SRST,
+ GPIO_SRST);
+ versaloon_interface.adaptors.delay.delayms(100);
+ versaloon_interface.adaptors.peripheral_commit();
+
+ if (swd_mode) {
+ versaloon_interface.adaptors.gpio.config(0, GPIO_TRST, 0,
+ GPIO_TRST, GPIO_TRST);
+ versaloon_interface.adaptors.swd.init(0);
+ vsllink_swd_frequency(NULL, jtag_get_speed_khz() * 1000);
+ vsllink_swd_switch_seq(NULL, JTAG_TO_SWD);
+
+ } else {
+ /* malloc buffer size for tap */
+ tap_buffer_size = versaloon_interface.usb_setting.buf_size / 2 - 32;
+ vsllink_free_buffer();
+ tdi_buffer = malloc(tap_buffer_size);
+ tdo_buffer = malloc(tap_buffer_size);
+ tms_buffer = malloc(tap_buffer_size);
+ if ((NULL == tdi_buffer) || (NULL == tdo_buffer) || (NULL == tms_buffer)) {
+ vsllink_quit();
+ return ERROR_FAIL;
+ }
+
+ versaloon_interface.adaptors.jtag_raw.init(0);
+ versaloon_interface.adaptors.jtag_raw.config(0, jtag_get_speed_khz());
+ versaloon_interface.adaptors.gpio.config(0, GPIO_SRST | GPIO_TRST,
+ GPIO_TRST, GPIO_SRST, GPIO_SRST);
+ }
+
if (ERROR_OK != versaloon_interface.adaptors.peripheral_commit())
return ERROR_FAIL;
else
versaloon_interface.adaptors.gpio.config(0, GPIO_SRST, GPIO_SRST, 0, 0);
- if (!trst)
- versaloon_interface.adaptors.gpio.out(0, GPIO_TRST, GPIO_TRST);
- else
- versaloon_interface.adaptors.gpio.out(0, GPIO_TRST, 0);
+ if (!swd_mode) {
+ if (!trst)
+ versaloon_interface.adaptors.gpio.out(0, GPIO_TRST, GPIO_TRST);
+ else
+ versaloon_interface.adaptors.gpio.out(0, GPIO_TRST, 0);
+ }
+
versaloon_interface.adaptors.peripheral_commit();
}
return ERROR_OK;
}
+COMMAND_HANDLER(vsllink_handle_usb_serial_command)
+{
+ if (CMD_ARGC > 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ free(versaloon_interface.usb_setting.serialstring);
+
+ if (CMD_ARGC == 1)
+ versaloon_interface.usb_setting.serialstring = strdup(CMD_ARGV[0]);
+ else
+ versaloon_interface.usb_setting.serialstring = NULL;
+
+ return ERROR_OK;
+}
+
COMMAND_HANDLER(vsllink_handle_usb_bulkin_command)
{
if (CMD_ARGC != 1)
static int vsllink_tap_execute(void)
{
+ if (swd_mode)
+ return ERROR_OK;
+
return vsllink_jtag_execute();
}
-/****************************************************************************
- * VSLLink USB low-level functions */
+static int vsllink_swd_init(void)
+{
+ LOG_INFO("VSLLink SWD mode enabled");
+ swd_mode = true;
-static uint8_t usb_check_string(usb_dev_handle *usb, uint8_t stringidx,
- char *string, char *buff, uint16_t buf_size)
+ return ERROR_OK;
+}
+
+static int_least32_t vsllink_swd_frequency(struct adiv5_dap *dap,
+ int_least32_t hz)
{
- int len;
- uint8_t alloced = 0;
- uint8_t ret = 1;
+ const int_least32_t delay2hz[] = {
+ 1850000, 235000, 130000, 102000, 85000, 72000
+ };
+
+ if (hz > 0) {
+ uint16_t delay = UINT16_MAX;
- if (NULL == buff) {
- buf_size = 256;
- buff = malloc(buf_size);
- if (NULL == buff) {
- ret = 0;
- goto free_and_return;
+ for (uint16_t i = 0; i < ARRAY_SIZE(delay2hz); i++) {
+ if (hz >= delay2hz[i]) {
+ hz = delay2hz[i];
+ delay = i;
+ break;
+ }
}
- alloced = 1;
- }
- strcpy(buff, "");
- len = usb_get_string_simple(usb, stringidx, buff, buf_size);
- if ((len < 0) || ((size_t)len != strlen(buff))) {
- ret = 0;
- goto free_and_return;
- }
+ if (delay == UINT16_MAX)
+ delay = (500000 / hz) - 1;
+
+ /* Calculate retry count after a WAIT response. This will give
+ * a retry timeout at about ~250 ms. 54 is the number of bits
+ * found in a transaction. */
+ uint16_t retry_count = 250 * hz / 1000 / 54;
- buff[len] = '\0';
- if ((string != NULL) && strcmp(buff, string)) {
- ret = 0;
- goto free_and_return;
+ LOG_DEBUG("SWD delay: %d, retry count: %d", delay, retry_count);
+
+ versaloon_interface.adaptors.swd.config(0, 2, retry_count, delay);
}
-free_and_return:
- if (alloced && (buff != NULL)) {
- free(buff);
- buff = NULL;
+ return hz;
+}
+
+static int vsllink_swd_switch_seq(struct adiv5_dap *dap,
+ enum swd_special_seq seq)
+{
+ switch (seq) {
+ case LINE_RESET:
+ LOG_DEBUG("SWD line reset");
+ versaloon_interface.adaptors.swd.seqout(0, swd_seq_line_reset,
+ swd_seq_line_reset_len);
+ break;
+ case JTAG_TO_SWD:
+ LOG_DEBUG("JTAG-to-SWD");
+ versaloon_interface.adaptors.swd.seqout(0, swd_seq_jtag_to_swd,
+ swd_seq_jtag_to_swd_len);
+ break;
+ case SWD_TO_JTAG:
+ LOG_DEBUG("SWD-to-JTAG");
+ versaloon_interface.adaptors.swd.seqout(0, swd_seq_swd_to_jtag,
+ swd_seq_swd_to_jtag_len);
+ break;
+ default:
+ LOG_ERROR("Sequence %d not supported", seq);
+ return ERROR_FAIL;
}
- return ret;
-}
-
-static usb_dev_handle *find_usb_device(uint16_t VID, uint16_t PID,
- uint8_t interface, int8_t serialindex, char *serialstring,
- int8_t productindex, char *productstring)
-{
- usb_dev_handle *dev_handle = NULL;
- struct usb_bus *busses;
- struct usb_bus *bus;
- struct usb_device *dev;
-
- usb_init();
- usb_find_busses();
- usb_find_devices();
- busses = usb_get_busses();
-
- for (bus = busses; bus; bus = bus->next) {
- for (dev = bus->devices; dev; dev = dev->next) {
- if ((dev->descriptor.idVendor == VID)
- && (dev->descriptor.idProduct == PID)) {
- dev_handle = usb_open(dev);
- if (NULL == dev_handle) {
- LOG_ERROR("failed to open %04X:%04X, %s", VID, PID,
- usb_strerror());
- continue;
- }
- /* check description string */
- if (((productstring != NULL) && (productindex >= 0)
- && !usb_check_string(dev_handle, productindex,
- productstring, NULL, 0))
- || ((serialstring != NULL) && (serialindex >= 0)
- && !usb_check_string(dev_handle, serialindex,
- serialstring, NULL, 0))) {
- usb_close(dev_handle);
- dev_handle = NULL;
- continue;
- }
+ return ERROR_OK;
+}
- if (usb_claim_interface(dev_handle, interface) != 0) {
- LOG_ERROR(ERRMSG_FAILURE_OPERATION_MESSAGE,
- "claim interface", usb_strerror());
- usb_close(dev_handle);
- dev_handle = NULL;
- continue;
- }
+static void vsllink_swd_read_reg(struct adiv5_dap *dap, uint8_t cmd,
+ uint32_t *value)
+{
+ versaloon_interface.adaptors.swd.transact(0, cmd, value, NULL);
+}
- if (dev_handle != NULL)
- return dev_handle;
- }
- }
- }
+static void vsllink_swd_write_reg(struct adiv5_dap *dap, uint8_t cmd,
+ uint32_t value)
+{
+ versaloon_interface.adaptors.swd.transact(0, cmd, &value, NULL);
+}
- return dev_handle;
+static int vsllink_swd_run_queue(struct adiv5_dap *dap)
+{
+ return versaloon_interface.adaptors.peripheral_commit();
}
-static struct vsllink *vsllink_usb_open(void)
+/****************************************************************************
+ * VSLLink USB low-level functions */
+
+static int vsllink_check_usb_strings(
+ struct libusb_device_handle *usb_device_handle,
+ struct libusb_device_descriptor *usb_desc)
{
- usb_init();
+ char desc_string[256];
+ int retval;
+
+ if (NULL != versaloon_interface.usb_setting.serialstring) {
+ retval = libusb_get_string_descriptor_ascii(usb_device_handle,
+ usb_desc->iSerialNumber, (unsigned char *)desc_string,
+ sizeof(desc_string));
+ if (retval < 0)
+ return ERROR_FAIL;
+
+ if (strncmp(desc_string, versaloon_interface.usb_setting.serialstring,
+ sizeof(desc_string)))
+ return ERROR_FAIL;
+ }
- struct usb_dev_handle *dev;
+ retval = libusb_get_string_descriptor_ascii(usb_device_handle,
+ usb_desc->iProduct, (unsigned char *)desc_string,
+ sizeof(desc_string));
+ if (retval < 0)
+ return ERROR_FAIL;
- dev = find_usb_device(versaloon_interface.usb_setting.vid,
- versaloon_interface.usb_setting.pid,
- versaloon_interface.usb_setting.interface,
- 0, NULL, 2, "Versaloon");
- if (NULL == dev)
- return NULL;
+ if (strstr(desc_string, "Versaloon") == NULL)
+ return ERROR_FAIL;
- struct vsllink *result = malloc(sizeof(struct vsllink));
- result->usb_handle = dev;
- return result;
+ return ERROR_OK;
}
-static void vsllink_usb_close(struct vsllink *vsllink)
+static int vsllink_usb_open(struct vsllink *vsllink)
{
- int ret;
+ ssize_t num_devices, i;
+ libusb_device **usb_devices;
+ struct libusb_device_descriptor usb_desc;
+ struct libusb_device_handle *usb_device_handle;
+ int retval;
- ret = usb_release_interface(vsllink->usb_handle,
- versaloon_interface.usb_setting.interface);
- if (ret != 0) {
- LOG_ERROR("fail to release interface %d, %d returned",
- versaloon_interface.usb_setting.interface, ret);
- exit(-1);
+ num_devices = libusb_get_device_list(vsllink->libusb_ctx, &usb_devices);
+
+ if (num_devices <= 0)
+ return ERROR_FAIL;
+
+ for (i = 0; i < num_devices; i++) {
+ libusb_device *device = usb_devices[i];
+
+ retval = libusb_get_device_descriptor(device, &usb_desc);
+ if (retval != 0)
+ continue;
+
+ if (usb_desc.idVendor != versaloon_interface.usb_setting.vid ||
+ usb_desc.idProduct != versaloon_interface.usb_setting.pid)
+ continue;
+
+ retval = libusb_open(device, &usb_device_handle);
+ if (retval != 0)
+ continue;
+
+ retval = vsllink_check_usb_strings(usb_device_handle, &usb_desc);
+ if (ERROR_OK == retval)
+ break;
+
+ libusb_close(usb_device_handle);
}
- ret = usb_close(vsllink->usb_handle);
- if (ret != 0) {
- LOG_ERROR("fail to close usb, %d returned", ret);
- exit(-1);
+ libusb_free_device_list(usb_devices, 1);
+
+ if (i == num_devices)
+ return ERROR_FAIL;
+
+ retval = libusb_claim_interface(usb_device_handle,
+ versaloon_interface.usb_setting.interface);
+ if (retval != 0) {
+ LOG_ERROR("unable to claim interface");
+ libusb_close(usb_device_handle);
+ return ERROR_FAIL;
}
- free(vsllink);
+ vsllink->usb_device_handle = usb_device_handle;
+ return ERROR_OK;
+}
+
+static void vsllink_usb_close(struct vsllink *vsllink)
+{
+ libusb_release_interface(vsllink->usb_device_handle,
+ versaloon_interface.usb_setting.interface);
+ libusb_close(vsllink->usb_device_handle);
}
#define BYTES_PER_LINE 16
.handler = &vsllink_handle_usb_pid_command,
.mode = COMMAND_CONFIG,
},
+ {
+ .name = "vsllink_usb_serial",
+ .handler = &vsllink_handle_usb_serial_command,
+ .mode = COMMAND_CONFIG,
+ },
{
.name = "vsllink_usb_bulkin",
.handler = &vsllink_handle_usb_bulkin_command,
COMMAND_REGISTRATION_DONE
};
-static const char *vsllink_transports[] = {"jtag", "swd", NULL};
+static const char * const vsllink_transports[] = {"jtag", "swd", NULL};
+
+static const struct swd_driver vsllink_swd_driver = {
+ .init = vsllink_swd_init,
+ .frequency = vsllink_swd_frequency,
+ .switch_seq = vsllink_swd_switch_seq,
+ .read_reg = vsllink_swd_read_reg,
+ .write_reg = vsllink_swd_write_reg,
+ .run = vsllink_swd_run_queue,
+};
struct jtag_interface vsllink_interface = {
.name = "vsllink",
.supported = DEBUG_CAP_TMS_SEQ,
.commands = vsllink_command_handlers,
.transports = vsllink_transports,
+ .swd = &vsllink_swd_driver,
.init = vsllink_init,
.quit = vsllink_quit,
projects / openocd / blobdiff