#include <jtag/stlink/stlink_interface.h>
#include <target/target.h>
+#include <target/cortex_m.h>
+
#include "libusb_common.h"
#define ENDPOINT_IN 0x80
#define ENDPOINT_OUT 0x00
-#define STLINK_RX_EP (1|ENDPOINT_IN)
-#define STLINK_TX_EP (2|ENDPOINT_OUT)
-#define STLINK_CMD_SIZE (16)
-#define STLINK_TX_SIZE (4*128)
-#define STLINK_RX_SIZE (4*128)
+#define STLINK_NULL_EP 0
+#define STLINK_RX_EP (1|ENDPOINT_IN)
+#define STLINK_TX_EP (2|ENDPOINT_OUT)
+#define STLINK_SG_SIZE (31)
+#define STLINK_DATA_SIZE (4*128)
+#define STLINK_CMD_SIZE_V2 (16)
+#define STLINK_CMD_SIZE_V1 (10)
enum stlink_jtag_api_version {
- STLINK_JTAG_API_V1 = 0,
+ STLINK_JTAG_API_V1 = 1,
STLINK_JTAG_API_V2,
};
/** */
struct libusb_transfer *trans;
/** */
- uint8_t txbuf[STLINK_TX_SIZE];
+ uint8_t cmdbuf[STLINK_SG_SIZE];
+ /** */
+ uint8_t cmdidx;
/** */
- uint8_t rxbuf[STLINK_RX_SIZE];
+ uint8_t direction;
+ /** */
+ uint8_t databuf[STLINK_DATA_SIZE];
/** */
enum stlink_transports transport;
/** */
uint16_t vid;
/** */
uint16_t pid;
- /** */
- uint32_t sg_tag;
/** this is the currently used jtag api */
enum stlink_jtag_api_version jtag_api;
};
-#define STLINK_OK 0x80
-#define STLINK_FALSE 0x81
+#define STLINK_DEBUG_ERR_OK 0x80
+#define STLINK_DEBUG_ERR_FAULT 0x81
#define STLINK_CORE_RUNNING 0x80
#define STLINK_CORE_HALTED 0x81
#define STLINK_CORE_STAT_UNKNOWN -1
#define STLINK_DEBUG_READCOREID 0x22
#define STLINK_DEBUG_APIV2_ENTER 0x30
-
+#define STLINK_DEBUG_APIV2_READ_IDCODES 0x31
#define STLINK_DEBUG_APIV2_RESETSYS 0x32
#define STLINK_DEBUG_APIV2_READREG 0x33
#define STLINK_DEBUG_APIV2_WRITEREG 0x34
+#define STLINK_DEBUG_APIV2_WRITEDEBUGREG 0x35
+#define STLINK_DEBUG_APIV2_READDEBUGREG 0x36
#define STLINK_DEBUG_APIV2_READALLREGS 0x3A
+#define STLINK_DEBUG_APIV2_GETLASTRWSTATUS 0x3B
+#define STLINK_DEBUG_APIV2_DRIVE_NRST 0x3C
+
+#define STLINK_DEBUG_APIV2_DRIVE_NRST_LOW 0x00
+#define STLINK_DEBUG_APIV2_DRIVE_NRST_HIGH 0x01
+#define STLINK_DEBUG_APIV2_DRIVE_NRST_PULSE 0x02
+
/** */
enum stlink_mode {
STLINK_MODE_UNKNOWN = 0,
STLINK_MODE_DEBUG_SWIM
};
-/** */
-static void stlink_usb_recv_v1_create_cmd(char *b, int s, uint32_t tag, uint32_t rxsize,
- uint8_t flag, uint8_t lun, uint8_t length)
-{
- int i = 0;
-
- memset(b, 0x00, s);
+#define REQUEST_SENSE 0x03
+#define REQUEST_SENSE_LENGTH 18
- /* fill the send buffer */
- strcpy(b, "USBC");
- i += 4;
-
- buf_set_u32(b+i, 0, 32, tag);
- i += 4;
- buf_set_u32(b+i, 0, 32, rxsize);
- i += 4;
- b[i++] = flag;
- b[i++] = lun;
- b[i++] = length;
-}
+static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size);
/** */
-static int stlink_usb_recv_v1_mass_storage_cmd(void *handle, const uint8_t *txbuf, int txsize, uint8_t *rxbuf,
- int rxsize)
+static int stlink_usb_xfer_v1_get_status(void *handle)
{
- char sg_buffer[31];
struct stlink_usb_handle_s *h;
assert(handle != NULL);
h = (struct stlink_usb_handle_s *)handle;
- h->sg_tag = (h->sg_tag + 1) & 1;
- stlink_usb_recv_v1_create_cmd(sg_buffer, 31, h->sg_tag, rxsize, STLINK_TX_EP, 0x00, txsize);
+ /* read status */
+ memset(h->cmdbuf, 0, STLINK_SG_SIZE);
+
+ if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)h->cmdbuf,
+ 13, 1000) != 13)
+ return ERROR_FAIL;
- memcpy(sg_buffer+15, txbuf, 10);
+ uint32_t t1;
- if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)sg_buffer, 31,
- 1000) != 31) {
- printf("send failed\n");
+ t1 = buf_get_u32(h->cmdbuf, 0, 32);
+
+ /* check for USBS */
+ if (t1 != 0x53425355)
+ return ERROR_FAIL;
+ /*
+ * CSW status:
+ * 0 success
+ * 1 command failure
+ * 2 phase error
+ */
+ if (h->cmdbuf[12] != 0)
return ERROR_FAIL;
- }
return ERROR_OK;
}
-#define REQUEST_SENSE 0x03
-#define REQUEST_SENSE_LENGTH 18
-
/** */
-static int stlink_usb_recv_v1_get_status(void *handle, char *sg_buffer, int len)
+static int stlink_usb_xfer_rw(void *handle, int cmdsize, const uint8_t *buf, int size)
{
struct stlink_usb_handle_s *h;
h = (struct stlink_usb_handle_s *)handle;
- /* read status */
- memset(sg_buffer, 0x00, len);
-
- if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)sg_buffer,
- len, 1000) != len)
+ if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)h->cmdbuf, cmdsize,
+ 1000) != cmdsize) {
return ERROR_FAIL;
+ }
- uint32_t t1, t2;
-
- t1 = buf_get_u32(sg_buffer+0, 0, 32);
- t2 = buf_get_u32(sg_buffer+4, 0, 32);
-
- /* check for USBS */
- if (t1 != 0x53425355)
- return ERROR_FAIL;
+ if (h->direction == STLINK_TX_EP && size) {
+ if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)buf,
+ size, 1000) != size) {
+ LOG_DEBUG("bulk write failed");
+ return ERROR_FAIL;
+ }
+ } else if (h->direction == STLINK_RX_EP && size) {
+ if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)buf,
+ size, 1000) != size) {
+ LOG_DEBUG("bulk read failed");
+ return ERROR_FAIL;
+ }
+ }
return ERROR_OK;
}
/** */
-static int stlink_usb_recv_v1_get_sense(void *handle)
+static int stlink_usb_xfer_v1_get_sense(void *handle)
{
+ int res;
struct stlink_usb_handle_s *h;
- char cdb[16];
- char sg_buffer[31];
assert(handle != NULL);
h = (struct stlink_usb_handle_s *)handle;
- h->sg_tag = (h->sg_tag + 1) & 1;
-
- cdb[0] = REQUEST_SENSE;
- cdb[4] = REQUEST_SENSE_LENGTH;
- stlink_usb_recv_v1_create_cmd(sg_buffer, 31, h->sg_tag, REQUEST_SENSE_LENGTH, STLINK_TX_EP,
- 0x00, 16);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 16);
- memcpy(sg_buffer+15, cdb, 16);
+ h->cmdbuf[h->cmdidx++] = REQUEST_SENSE;
+ h->cmdbuf[h->cmdidx++] = 0;
+ h->cmdbuf[h->cmdidx++] = 0;
+ h->cmdbuf[h->cmdidx++] = 0;
+ h->cmdbuf[h->cmdidx++] = REQUEST_SENSE_LENGTH;
- if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)sg_buffer, 16,
- 1000) != 16)
- return ERROR_FAIL;
+ res = stlink_usb_xfer_rw(handle, REQUEST_SENSE_LENGTH, h->databuf, 16);
- if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)cdb,
- 16, 1000) != 16)
- return ERROR_FAIL;
+ if (res != ERROR_OK)
+ return res;
- if (stlink_usb_recv_v1_get_status(handle, sg_buffer, 13) != ERROR_OK)
+ if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK)
return ERROR_FAIL;
- /* check for sense */
- if (sg_buffer[12] != 0)
- return ERROR_FAIL;
-
- /* if (sense[0] != 0x70 && sense[0] != 0x71) */
return ERROR_OK;
}
/** */
-static int stlink_usb_recv_v1(void *handle, const uint8_t *txbuf, int txsize, uint8_t *rxbuf,
- int rxsize)
+static int stlink_usb_xfer(void *handle, const uint8_t *buf, int size)
{
- int err;
- char sg_buffer[31];
+ int err, cmdsize = STLINK_CMD_SIZE_V2;
struct stlink_usb_handle_s *h;
assert(handle != NULL);
h = (struct stlink_usb_handle_s *)handle;
- err = stlink_usb_recv_v1_mass_storage_cmd(handle, txbuf, txsize, rxbuf, rxsize);
+ if (h->version.stlink == 1)
+ cmdsize = STLINK_SG_SIZE;
+
+ err = stlink_usb_xfer_rw(handle, cmdsize, buf, size);
if (err != ERROR_OK)
return err;
- if (rxsize && rxbuf) {
- if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)rxbuf,
- rxsize, 1000) != rxsize) {
- LOG_DEBUG("jtag_libusb_bulk_read");
+ if (h->version.stlink == 1) {
+ if (stlink_usb_xfer_v1_get_status(handle) != ERROR_OK) {
+ /* check csw status */
+ if (h->cmdbuf[12] == 1) {
+ LOG_DEBUG("get sense");
+ if (stlink_usb_xfer_v1_get_sense(handle) != ERROR_OK)
+ return ERROR_FAIL;
+ }
return ERROR_FAIL;
}
}
- if (stlink_usb_recv_v1_get_status(handle, sg_buffer, 13) != ERROR_OK)
- return ERROR_FAIL;
- /* check for sense */
- if (sg_buffer[12] == 1) {
- LOG_DEBUG("get sense");
- err = stlink_usb_recv_v1_get_sense(handle);
- }
- return err;
+ return ERROR_OK;
}
/** */
-static int stlink_usb_recv_v2(void *handle, const uint8_t *txbuf, int txsize, uint8_t *rxbuf,
- int rxsize)
+static void stlink_usb_xfer_v1_create_cmd(void *handle, uint8_t direction, uint32_t size)
{
struct stlink_usb_handle_s *h;
- assert(handle != NULL);
-
h = (struct stlink_usb_handle_s *)handle;
- if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)txbuf, txsize,
- 1000) != txsize) {
- return ERROR_FAIL;
- }
- if (rxsize && rxbuf) {
- if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)rxbuf,
- rxsize, 1000) != rxsize) {
- return ERROR_FAIL;
- }
- }
- return ERROR_OK;
+ /* fill the send buffer */
+ strcpy((char *)h->cmdbuf, "USBC");
+ h->cmdidx += 4;
+ /* csw tag not used */
+ h->cmdidx += 4;
+ buf_set_u32(h->cmdbuf+h->cmdidx, 0, 32, size);
+ h->cmdidx += 4;
+ h->cmdbuf[h->cmdidx++] = (direction == STLINK_RX_EP ? ENDPOINT_IN : ENDPOINT_OUT);
+ h->cmdbuf[h->cmdidx++] = 0; /* lun */
+ h->cmdbuf[h->cmdidx++] = STLINK_CMD_SIZE_V1;
}
/** */
-static int stlink_usb_recv(void *handle, const uint8_t *txbuf, int txsize, uint8_t *rxbuf,
- int rxsize)
+static void stlink_usb_init_buffer(void *handle, uint8_t direction, uint32_t size)
{
struct stlink_usb_handle_s *h;
- assert(handle != NULL);
-
h = (struct stlink_usb_handle_s *)handle;
- if (h->version.stlink == 1) {
- return stlink_usb_recv_v1(handle, txbuf, txsize, rxbuf, rxsize);
- } else {
- if (txsize < STLINK_CMD_SIZE)
- txsize = STLINK_CMD_SIZE;
- return stlink_usb_recv_v2(handle, txbuf, txsize, rxbuf, rxsize);
- }
+ h->direction = direction;
+
+ h->cmdidx = 0;
+
+ memset(h->cmdbuf, 0, STLINK_SG_SIZE);
+ memset(h->databuf, 0, STLINK_DATA_SIZE);
+
+ if (h->version.stlink == 1)
+ stlink_usb_xfer_v1_create_cmd(handle, direction, size);
}
+static const char * const stlink_usb_error_msg[] = {
+ "unknown"
+};
+
/** */
-static void stlink_usb_init_buffer(void *handle)
+static int stlink_usb_error_check(void *handle)
{
+ int res;
+ const char *err_msg = 0;
struct stlink_usb_handle_s *h;
assert(handle != NULL);
h = (struct stlink_usb_handle_s *)handle;
- memset(h->txbuf, 0, STLINK_CMD_SIZE);
+ /* TODO: no error checking yet on api V1 */
+ if (h->jtag_api == STLINK_JTAG_API_V1)
+ h->databuf[0] = STLINK_DEBUG_ERR_OK;
+
+ switch (h->databuf[0]) {
+ case STLINK_DEBUG_ERR_OK:
+ res = ERROR_OK;
+ break;
+ case STLINK_DEBUG_ERR_FAULT:
+ default:
+ err_msg = stlink_usb_error_msg[0];
+ res = ERROR_FAIL;
+ break;
+ }
+
+ if (res != ERROR_OK)
+ LOG_DEBUG("status error: %d ('%s')", h->databuf[0], err_msg);
+
+ return res;
}
/** */
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 6);
- h->txbuf[0] = STLINK_GET_VERSION;
+ h->cmdbuf[h->cmdidx++] = STLINK_GET_VERSION;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 6);
+ res = stlink_usb_xfer(handle, h->databuf, 6);
if (res != ERROR_OK)
return res;
- v = (h->rxbuf[0] << 8) | h->rxbuf[1];
+ v = (h->databuf[0] << 8) | h->databuf[1];
h->version.stlink = (v >> 12) & 0x0f;
h->version.jtag = (v >> 6) & 0x3f;
h->version.swim = v & 0x3f;
- h->vid = buf_get_u32(h->rxbuf, 16, 16);
- h->pid = buf_get_u32(h->rxbuf, 32, 16);
+ h->vid = buf_get_u32(h->databuf, 16, 16);
+ h->pid = buf_get_u32(h->databuf, 32, 16);
/* set the supported jtag api version
- * V1 doesn't support API V2 at all
- * V2 support API V2 since JTAG V13
+ * API V2 is supported since JTAG V11
*/
- if ((h->version.stlink == 2) && (h->version.jtag > 12))
+ if (h->version.jtag >= 11)
h->version.jtag_api_max = STLINK_JTAG_API_V2;
else
h->version.jtag_api_max = STLINK_JTAG_API_V1;
- LOG_DEBUG("STLINK v%d JTAG v%d API v%d SWIM v%d VID %04X PID %04X",
+ LOG_DEBUG("STLINK v%d JTAG v%d API v%d SWIM v%d VID 0x%04X PID 0x%04X",
h->version.stlink,
h->version.jtag,
(h->version.jtag_api_max == STLINK_JTAG_API_V1) ? 1 : 2,
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
- h->txbuf[0] = STLINK_GET_CURRENT_MODE;
+ h->cmdbuf[h->cmdidx++] = STLINK_GET_CURRENT_MODE;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
+ res = stlink_usb_xfer(handle, h->databuf, 2);
if (res != ERROR_OK)
return res;
- *mode = h->rxbuf[0];
+ *mode = h->databuf[0];
return ERROR_OK;
}
static int stlink_usb_mode_enter(void *handle, enum stlink_mode type)
{
int res;
+ int rx_size = 0;
struct stlink_usb_handle_s *h;
assert(handle != NULL);
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ /* on api V2 we are able the read the latest command
+ * status
+ * TODO: we need the test on api V1 too
+ */
+ if (h->jtag_api == STLINK_JTAG_API_V2)
+ rx_size = 2;
+
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, rx_size);
switch (type) {
case STLINK_MODE_DEBUG_JTAG:
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
if (h->jtag_api == STLINK_JTAG_API_V1)
- h->txbuf[1] = STLINK_DEBUG_APIV1_ENTER;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER;
else
- h->txbuf[1] = STLINK_DEBUG_APIV2_ENTER;
- h->txbuf[2] = STLINK_DEBUG_ENTER_JTAG;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_JTAG;
break;
case STLINK_MODE_DEBUG_SWD:
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
if (h->jtag_api == STLINK_JTAG_API_V1)
- h->txbuf[1] = STLINK_DEBUG_APIV1_ENTER;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_ENTER;
else
- h->txbuf[1] = STLINK_DEBUG_APIV2_ENTER;
- h->txbuf[2] = STLINK_DEBUG_ENTER_SWD;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_ENTER;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_ENTER_SWD;
break;
case STLINK_MODE_DEBUG_SWIM:
- h->txbuf[0] = STLINK_SWIM_COMMAND;
- h->txbuf[1] = STLINK_SWIM_ENTER;
+ h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_SWIM_ENTER;
break;
case STLINK_MODE_DFU:
case STLINK_MODE_MASS:
return ERROR_FAIL;
}
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
+ res = stlink_usb_xfer(handle, h->databuf, rx_size);
+
if (res != ERROR_OK)
return res;
- return ERROR_OK;
+ res = stlink_usb_error_check(h);
+
+ return res;
}
/** */
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_NULL_EP, 0);
switch (type) {
case STLINK_MODE_DEBUG_JTAG:
case STLINK_MODE_DEBUG_SWD:
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_EXIT;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_EXIT;
break;
case STLINK_MODE_DEBUG_SWIM:
- h->txbuf[0] = STLINK_SWIM_COMMAND;
- h->txbuf[1] = STLINK_SWIM_EXIT;
+ h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_SWIM_EXIT;
break;
case STLINK_MODE_DFU:
- h->txbuf[0] = STLINK_DFU_COMMAND;
- h->txbuf[1] = STLINK_DFU_EXIT;
+ h->cmdbuf[h->cmdidx++] = STLINK_DFU_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DFU_EXIT;
break;
case STLINK_MODE_MASS:
default:
return ERROR_FAIL;
}
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
+ res = stlink_usb_xfer(handle, 0, 0);
+
if (res != ERROR_OK)
return res;
if (res != ERROR_OK)
return res;
- LOG_DEBUG("MODE: %02X", mode);
+ LOG_DEBUG("MODE: 0x%02X", mode);
/* try to exit current mode */
switch (mode) {
emode = STLINK_MODE_DEBUG_SWIM;
break;
case STLINK_DEV_BOOTLOADER_MODE:
+ case STLINK_DEV_MASS_MODE:
default:
emode = STLINK_MODE_UNKNOWN;
break;
if (res != ERROR_OK)
return res;
- LOG_DEBUG("MODE: %02X", mode);
+ LOG_DEBUG("MODE: 0x%02X", mode);
/* set selected mode */
switch (h->transport) {
if (res != ERROR_OK)
return res;
- LOG_DEBUG("MODE: %02X", mode);
+ LOG_DEBUG("MODE: 0x%02X", mode);
return ERROR_OK;
}
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 4);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_READCOREID;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READCOREID;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4);
+ res = stlink_usb_xfer(handle, h->databuf, 4);
if (res != ERROR_OK)
return res;
- *idcode = le_to_h_u32(h->rxbuf);
+ *idcode = le_to_h_u32(h->databuf);
- LOG_DEBUG("IDCODE: %08X", *idcode);
+ LOG_DEBUG("IDCODE: 0x%08X", *idcode);
return ERROR_OK;
}
+static int stlink_usb_v2_read_debug_reg(void *handle, uint32_t addr, uint32_t *val)
+{
+ struct stlink_usb_handle_s *h;
+ int res;
+
+ assert(handle != NULL);
+
+ h = (struct stlink_usb_handle_s *)handle;
+
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 8);
+
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READDEBUGREG;
+ h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
+ h->cmdidx += 4;
+
+ res = stlink_usb_xfer(handle, h->databuf, 8);
+
+ if (res != ERROR_OK)
+ return res;
+
+ *val = le_to_h_u32(h->databuf + 4);
+
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
+}
+
+static int stlink_usb_write_debug_reg(void *handle, uint32_t addr, uint32_t val)
+{
+ int res;
+ struct stlink_usb_handle_s *h;
+
+ assert(handle != NULL);
+
+ h = (struct stlink_usb_handle_s *)handle;
+
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
+
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ if (h->jtag_api == STLINK_JTAG_API_V1)
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_WRITEDEBUGREG;
+ else
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEDEBUGREG;
+ h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
+ h->cmdidx += 4;
+ h_u32_to_le(h->cmdbuf+h->cmdidx, val);
+ h->cmdidx += 4;
+
+ res = stlink_usb_xfer(handle, h->databuf, 2);
+
+ if (res != ERROR_OK)
+ return res;
+
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
+}
+
+static enum target_state stlink_usb_v2_get_status(void *handle)
+{
+ int result;
+ uint32_t status;
+
+ result = stlink_usb_v2_read_debug_reg(handle, DCB_DHCSR, &status);
+ if (result != ERROR_OK)
+ return TARGET_UNKNOWN;
+
+ if (status & S_HALT)
+ return TARGET_HALTED;
+ else if (status & S_RESET_ST)
+ return TARGET_RESET;
+
+ return TARGET_RUNNING;
+}
+
/** */
static enum target_state stlink_usb_state(void *handle)
{
h = (struct stlink_usb_handle_s *)handle;
if (h->jtag_api == STLINK_JTAG_API_V2)
- return TARGET_UNKNOWN;
+ return stlink_usb_v2_get_status(handle);
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_GETSTATUS;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_GETSTATUS;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
+ res = stlink_usb_xfer(handle, h->databuf, 2);
if (res != ERROR_OK)
return TARGET_UNKNOWN;
- if (h->rxbuf[0] == STLINK_CORE_RUNNING)
+ if (h->databuf[0] == STLINK_CORE_RUNNING)
return TARGET_RUNNING;
- if (h->rxbuf[0] == STLINK_CORE_HALTED)
+ if (h->databuf[0] == STLINK_CORE_HALTED)
return TARGET_HALTED;
return TARGET_UNKNOWN;
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
if (h->jtag_api == STLINK_JTAG_API_V1)
- h->txbuf[1] = STLINK_DEBUG_APIV1_RESETSYS;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_RESETSYS;
else
- h->txbuf[1] = STLINK_DEBUG_APIV2_RESETSYS;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_RESETSYS;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
+ res = stlink_usb_xfer(handle, h->databuf, 2);
if (res != ERROR_OK)
return res;
- LOG_DEBUG("RESET: %08X", h->rxbuf[0]);
+ LOG_DEBUG("RESET: 0x%08X", h->databuf[0]);
- return ERROR_OK;
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
+}
+
+static int stlink_usb_assert_srst(void *handle, int srst)
+{
+ int res;
+ struct stlink_usb_handle_s *h;
+
+ assert(handle != NULL);
+
+ h = (struct stlink_usb_handle_s *)handle;
+
+ if (h->jtag_api == STLINK_JTAG_API_V1)
+ return ERROR_COMMAND_NOTFOUND;
+
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
+
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_DRIVE_NRST;
+ h->cmdbuf[h->cmdidx++] = srst;
+
+ res = stlink_usb_xfer(handle, h->databuf, 2);
+
+ if (res != ERROR_OK)
+ return res;
+
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
}
/** */
h = (struct stlink_usb_handle_s *)handle;
if (h->jtag_api == STLINK_JTAG_API_V2)
- return ERROR_FAIL;
+ return stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_DEBUGEN);
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_RUNCORE;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_RUNCORE;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
+ res = stlink_usb_xfer(handle, h->databuf, 2);
if (res != ERROR_OK)
return res;
- return ERROR_OK;
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
}
/** */
h = (struct stlink_usb_handle_s *)handle;
if (h->jtag_api == STLINK_JTAG_API_V2)
- return ERROR_FAIL;
+ return stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_DEBUGEN);
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_FORCEDEBUG;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_FORCEDEBUG;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
+ res = stlink_usb_xfer(handle, h->databuf, 2);
if (res != ERROR_OK)
return res;
- return ERROR_OK;
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
}
/** */
h = (struct stlink_usb_handle_s *)handle;
- if (h->jtag_api == STLINK_JTAG_API_V2)
- return ERROR_FAIL;
+ if (h->jtag_api == STLINK_JTAG_API_V2) {
+ /* TODO: this emulates the v1 api, it should really use a similar auto mask isr
+ * that the cortex-m3 currently does. */
+ stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_MASKINTS|C_DEBUGEN);
+ stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_STEP|C_MASKINTS|C_DEBUGEN);
+ return stlink_usb_write_debug_reg(handle, DCB_DHCSR, DBGKEY|C_HALT|C_DEBUGEN);
+ }
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_STEPCORE;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_STEPCORE;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
+ res = stlink_usb_xfer(handle, h->databuf, 2);
if (res != ERROR_OK)
return res;
- return ERROR_OK;
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
}
/** */
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 84);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
if (h->jtag_api == STLINK_JTAG_API_V1)
- h->txbuf[1] = STLINK_DEBUG_APIV1_READALLREGS;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READALLREGS;
else
- h->txbuf[1] = STLINK_DEBUG_APIV2_READALLREGS;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READALLREGS;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 84);
+ res = stlink_usb_xfer(handle, h->databuf, 84);
if (res != ERROR_OK)
return res;
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, h->jtag_api == STLINK_JTAG_API_V1 ? 4 : 8);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
if (h->jtag_api == STLINK_JTAG_API_V1)
- h->txbuf[1] = STLINK_DEBUG_APIV1_READREG;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READREG;
else
- h->txbuf[1] = STLINK_DEBUG_APIV2_READREG;
- h->txbuf[2] = num;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READREG;
+ h->cmdbuf[h->cmdidx++] = num;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4);
+ res = stlink_usb_xfer(handle, h->databuf, h->jtag_api == STLINK_JTAG_API_V1 ? 4 : 8);
if (res != ERROR_OK)
return res;
- *val = le_to_h_u32(h->rxbuf);
+ if (h->jtag_api == STLINK_JTAG_API_V1)
+ *val = le_to_h_u32(h->databuf);
+ else {
+ *val = le_to_h_u32(h->databuf + 4);
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
+ }
return ERROR_OK;
}
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
if (h->jtag_api == STLINK_JTAG_API_V1)
- h->txbuf[1] = STLINK_DEBUG_APIV1_WRITEREG;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_WRITEREG;
else
- h->txbuf[1] = STLINK_DEBUG_APIV2_WRITEREG;
- h->txbuf[2] = num;
- h_u32_to_le(h->txbuf + 3, val);
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_WRITEREG;
+ h->cmdbuf[h->cmdidx++] = num;
+ h_u32_to_le(h->cmdbuf+h->cmdidx, val);
+ h->cmdidx += 4;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2);
+ res = stlink_usb_xfer(handle, h->databuf, 2);
if (res != ERROR_OK)
return res;
- return ERROR_OK;
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : ERROR_FAIL;
+}
+
+static int stlink_usb_get_rw_status(void *handle)
+{
+ int res;
+ struct stlink_usb_handle_s *h;
+
+ assert(handle != NULL);
+
+ h = (struct stlink_usb_handle_s *)handle;
+
+ if (h->jtag_api == STLINK_JTAG_API_V1)
+ return ERROR_OK;
+
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, 2);
+
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GETLASTRWSTATUS;
+
+ res = stlink_usb_xfer(handle, h->databuf, 2);
+
+ if (res != ERROR_OK)
+ return res;
+
+ return h->databuf[0] == STLINK_DEBUG_ERR_OK ? ERROR_OK : res;
}
/** */
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, read_len);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_READMEM_8BIT;
- h_u32_to_le(h->txbuf + 2, addr);
- h_u16_to_le(h->txbuf + 2 + 4, len);
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_8BIT;
+ h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
+ h->cmdidx += 4;
+ h_u16_to_le(h->cmdbuf+h->cmdidx, len);
+ h->cmdidx += 2;
/* we need to fix read length for single bytes */
if (read_len == 1)
read_len++;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, read_len);
+ res = stlink_usb_xfer(handle, h->databuf, read_len);
if (res != ERROR_OK)
return res;
- memcpy(buffer, h->rxbuf, len);
+ memcpy(buffer, h->databuf, len);
- return ERROR_OK;
+ return stlink_usb_get_rw_status(handle);
}
/** */
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
+ stlink_usb_init_buffer(handle, STLINK_TX_EP, len);
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_WRITEMEM_8BIT;
- h_u32_to_le(h->txbuf + 2, addr);
- h_u16_to_le(h->txbuf + 2 + 4, len);
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_8BIT;
+ h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
+ h->cmdidx += 4;
+ h_u16_to_le(h->cmdbuf+h->cmdidx, len);
+ h->cmdidx += 2;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
+ res = stlink_usb_xfer(handle, buffer, len);
if (res != ERROR_OK)
return res;
- res = stlink_usb_recv(handle, (uint8_t *) buffer, len, 0, 0);
-
- if (res != ERROR_OK)
- return res;
-
- return ERROR_OK;
+ return stlink_usb_get_rw_status(handle);
}
/** */
static int stlink_usb_read_mem32(void *handle, uint32_t addr, uint16_t len,
- uint32_t *buffer)
+ uint8_t *buffer)
{
int res;
struct stlink_usb_handle_s *h;
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
-
len *= 4;
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_READMEM_32BIT;
- h_u32_to_le(h->txbuf + 2, addr);
- h_u16_to_le(h->txbuf + 2 + 4, len);
+ stlink_usb_init_buffer(handle, STLINK_RX_EP, len);
+
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READMEM_32BIT;
+ h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
+ h->cmdidx += 4;
+ h_u16_to_le(h->cmdbuf+h->cmdidx, len);
+ h->cmdidx += 2;
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, len);
+ res = stlink_usb_xfer(handle, h->databuf, len);
if (res != ERROR_OK)
return res;
- memcpy(buffer, h->rxbuf, len);
+ memcpy(buffer, h->databuf, len);
- return ERROR_OK;
+ return stlink_usb_get_rw_status(handle);
}
/** */
static int stlink_usb_write_mem32(void *handle, uint32_t addr, uint16_t len,
- const uint32_t *buffer)
+ const uint8_t *buffer)
{
int res;
struct stlink_usb_handle_s *h;
h = (struct stlink_usb_handle_s *)handle;
- stlink_usb_init_buffer(handle);
-
len *= 4;
- h->txbuf[0] = STLINK_DEBUG_COMMAND;
- h->txbuf[1] = STLINK_DEBUG_WRITEMEM_32BIT;
- h_u32_to_le(h->txbuf + 2, addr);
- h_u16_to_le(h->txbuf + 2 + 4, len);
+ stlink_usb_init_buffer(handle, STLINK_TX_EP, len);
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
-
- if (res != ERROR_OK)
- return res;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
+ h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_WRITEMEM_32BIT;
+ h_u32_to_le(h->cmdbuf+h->cmdidx, addr);
+ h->cmdidx += 4;
+ h_u16_to_le(h->cmdbuf+h->cmdidx, len);
+ h->cmdidx += 2;
- res = stlink_usb_recv(handle, (uint8_t *) buffer, len, 0, 0);
+ res = stlink_usb_xfer(handle, buffer, len);
if (res != ERROR_OK)
return res;
- return ERROR_OK;
+ return stlink_usb_get_rw_status(handle);
}
/** */
{
int err;
struct stlink_usb_handle_s *h;
+ enum stlink_jtag_api_version api;
LOG_DEBUG("stlink_usb_open");
const uint16_t vids[] = { param->vid, 0 };
const uint16_t pids[] = { param->pid, 0 };
- LOG_DEBUG("transport: %d vid: %04x pid: %04x", param->transport,
+ LOG_DEBUG("transport: %d vid: 0x%04x pid: 0x%04x", param->transport,
param->vid, param->pid);
if (jtag_libusb_open(vids, pids, &h->fd) != ERROR_OK) {
/* compare usb vid/pid */
if ((param->vid != h->vid) || (param->pid != h->pid))
- LOG_INFO("vid/pid are not identical: %04X/%04X %04X/%04X",
+ LOG_INFO("vid/pid are not identical: 0x%04X/0x%04X 0x%04X/0x%04X",
param->vid, param->pid,
h->vid, h->pid);
return err;
}
- /* set the used jtag api */
- h->jtag_api = STLINK_JTAG_API_V1;
+ api = h->version.jtag_api_max;
+
+ /* check that user has not requested certain api version
+ * and if they have check it is supported */
+ if ((param->api != 0) && (param->api <= h->version.jtag_api_max)) {
+ api = param->api;
+ LOG_INFO("using stlink api v%d", api);
+ }
+
+ /* set the used jtag api, this will default to the newest supported version */
+ h->jtag_api = api;
/* initialize the debug hardware */
err = stlink_usb_init_mode(h);
/** */
.reset = stlink_usb_reset,
/** */
+ .assert_srst = stlink_usb_assert_srst,
+ /** */
.run = stlink_usb_run,
/** */
.halt = stlink_usb_halt,
.read_mem32 = stlink_usb_read_mem32,
/** */
.write_mem32 = stlink_usb_write_mem32,
+ /** */
+ .write_debug_reg = stlink_usb_write_debug_reg
};
projects / openocd / blobdiff