* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "dsp563xx.h"
#include "dsp563xx_once.h"
-/** single word instruction */
-static int dsp563xx_once_ir_exec(struct jtag_tap *tap, uint8_t instr, uint8_t rw,
- uint8_t go, uint8_t ex)
+#define JTAG_STATUS_STATIC_MASK 0x03
+#define JTAG_STATUS_STATIC_VALUE 0x01
+
+#define JTAG_STATUS_NORMAL 0x01
+#define JTAG_STATUS_STOPWAIT 0x05
+#define JTAG_STATUS_BUSY 0x09
+#define JTAG_STATUS_DEBUG 0x0d
+
+#define JTAG_INSTR_EXTEST 0x00
+#define JTAG_INSTR_SAMPLE_PRELOAD 0x01
+#define JTAG_INSTR_IDCODE 0x02
+#define JTAG_INSTR_HIZ 0x04
+#define JTAG_INSTR_CLAMP 0x05
+#define JTAG_INSTR_ENABLE_ONCE 0x06
+#define JTAG_INSTR_DEBUG_REQUEST 0x07
+#define JTAG_INSTR_BYPASS 0x0F
+
+/** */
+static inline int dsp563xx_write_dr(struct jtag_tap *tap, uint8_t * dr_in, uint8_t * dr_out, int dr_len, int rti)
{
- dsp563xx_write_dr_u8(tap, 0,
- instr | (ex << 5) | (go << 6) | (rw << 7), 8, 0);
- dsp563xx_execute_queue();
+ jtag_add_plain_dr_scan(dr_len, dr_out, dr_in, TAP_IDLE);
return ERROR_OK;
}
+/** */
+static inline int dsp563xx_write_dr_u8(struct jtag_tap *tap, uint8_t * dr_in, uint8_t dr_out, int dr_len, int rti)
+{
+ return dsp563xx_write_dr(tap, dr_in, &dr_out, dr_len, rti);
+}
+
+/** */
+static inline int dsp563xx_write_dr_u32(struct jtag_tap *tap, uint32_t * dr_in, uint32_t dr_out, int dr_len, int rti)
+{
+ return dsp563xx_write_dr(tap, (uint8_t *) dr_in, (uint8_t *) &dr_out, dr_len, rti);
+}
+
/** single word instruction */
-static int dsp563xx_once_ir_exec_nq(struct jtag_tap *tap, uint8_t instr, uint8_t rw,
- uint8_t go, uint8_t ex)
+static inline int dsp563xx_once_ir_exec(struct jtag_tap *tap, int flush, uint8_t instr, uint8_t rw, uint8_t go, uint8_t ex)
{
- dsp563xx_write_dr_u8(tap, 0,
- instr | (ex << 5) | (go << 6) | (rw << 7), 8, 0);
+ int err;
+
+ err = dsp563xx_write_dr_u8(tap, 0, instr | (ex << 5) | (go << 6) | (rw << 7), 8, 0);
+ if (err != ERROR_OK)
+ return err;
+ if (flush)
+ err = jtag_execute_queue();
+ return err;
+}
+
+/* IR and DR functions */
+static inline int dsp563xx_write_ir(struct jtag_tap *tap, uint8_t * ir_in, uint8_t * ir_out, int ir_len, int rti)
+{
+ jtag_add_plain_ir_scan(tap->ir_length, ir_out, ir_in, TAP_IDLE);
return ERROR_OK;
}
-/** once read register */
-int dsp563xx_once_reg_read(struct jtag_tap *tap, uint8_t reg, uint32_t * data)
+static inline int dsp563xx_write_ir_u8(struct jtag_tap *tap, uint8_t * ir_in, uint8_t ir_out, int ir_len, int rti)
+{
+ return dsp563xx_write_ir(tap, ir_in, &ir_out, ir_len, rti);
+}
+
+static inline int dsp563xx_jtag_sendinstr(struct jtag_tap *tap, uint8_t * ir_in, uint8_t ir_out)
{
- uint32_t dr_in;
+ return dsp563xx_write_ir_u8(tap, ir_in, ir_out, tap->ir_length, 1);
+}
- dr_in = 0;
+/** */
+int dsp563xx_once_target_status(struct jtag_tap *tap)
+{
+ int err;
+ uint8_t jtag_status;
- dsp563xx_once_ir_exec(tap, reg, 1, 0, 0);
- dsp563xx_write_dr_u32(tap, &dr_in, 0x00, 24, 0);
- dsp563xx_execute_queue();
+ err = dsp563xx_jtag_sendinstr(tap, &jtag_status, JTAG_INSTR_ENABLE_ONCE);
+ if (err != ERROR_OK)
+ return TARGET_UNKNOWN;
+ err = jtag_execute_queue();
+ if (err != ERROR_OK)
+ return TARGET_UNKNOWN;
- *data = dr_in;
+ /* verify correct static status pattern */
+ if ((jtag_status & JTAG_STATUS_STATIC_MASK) != JTAG_STATUS_STATIC_VALUE)
+ return TARGET_UNKNOWN;
- return ERROR_OK;
+ if (jtag_status != JTAG_STATUS_DEBUG)
+ return TARGET_RUNNING;
+
+ return TARGET_HALTED;
}
-/** once write register */
-int dsp563xx_once_reg_write(struct jtag_tap *tap, uint8_t reg, uint32_t data)
+/** */
+int dsp563xx_once_request_debug(struct jtag_tap *tap, int reset_state)
{
- dsp563xx_once_ir_exec(tap, reg, 0, 0, 0);
- dsp563xx_write_dr_u32(tap, 0x00, data, 24, 0);
- dsp563xx_execute_queue();
+ int err;
+ uint8_t ir_in = 0, pattern = 0;
+ uint32_t retry = 0;
+
+ /* in reset state we only get a ACK
+ * from the interface */
+ if (reset_state)
+ pattern = 1;
+ else
+ pattern = JTAG_STATUS_DEBUG;
+
+ /* wait until we get the ack */
+ while (ir_in != pattern) {
+ err = dsp563xx_jtag_sendinstr(tap, &ir_in, JTAG_INSTR_DEBUG_REQUEST);
+ if (err != ERROR_OK)
+ return err;
+ err = jtag_execute_queue();
+ if (err != ERROR_OK)
+ return err;
+
+ LOG_DEBUG("debug request: %02X", ir_in);
+
+ if (retry++ == 100)
+ return ERROR_TARGET_FAILURE;
+ }
+
+ /* we cant enable the once in reset state */
+ if (pattern == 1)
+ return ERROR_OK;
+
+ /* try to enable once */
+ retry = 0;
+ ir_in = 0;
+ while (ir_in != pattern) {
+ err = dsp563xx_jtag_sendinstr(tap, &ir_in, JTAG_INSTR_ENABLE_ONCE);
+ if (err != ERROR_OK)
+ return err;
+ err = jtag_execute_queue();
+ if (err != ERROR_OK)
+ return err;
+
+ LOG_DEBUG("enable once: %02X", ir_in);
+
+ if (retry++ == 100) {
+ LOG_DEBUG("error");
+ return ERROR_TARGET_FAILURE;
+ }
+ }
+
+ if (ir_in != JTAG_STATUS_DEBUG)
+ return ERROR_TARGET_FAILURE;
return ERROR_OK;
}
-/** single word instruction */
-int dsp563xx_once_execute_sw_ir(struct jtag_tap *tap, uint32_t opcode)
+/** once read registers */
+int dsp563xx_once_read_register(struct jtag_tap *tap, int flush, struct once_reg *regs, int len)
{
- dsp563xx_once_ir_exec(tap, DSP563XX_ONCE_OPDBR, 0, 1, 0);
- dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
- dsp563xx_execute_queue();
+ int i;
+ int err = ERROR_OK;
- return ERROR_OK;
+ for (i = 0; i < len; i++) {
+ err = dsp563xx_once_reg_read_ex(tap, flush, regs[i].addr, regs[i].len, ®s[i].reg);
+ if (err != ERROR_OK)
+ return err;
+ }
+
+ if (flush)
+ err = jtag_execute_queue();
+ return err;
}
-/** double word instruction */
-int dsp563xx_once_execute_dw_ir(struct jtag_tap *tap, uint32_t opcode,
- uint32_t operand)
+/** once read register with register len */
+int dsp563xx_once_reg_read_ex(struct jtag_tap *tap, int flush, uint8_t reg, uint8_t len, uint32_t * data)
{
- dsp563xx_once_ir_exec(tap, DSP563XX_ONCE_OPDBR, 0, 0, 0);
- dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
- dsp563xx_execute_queue();
+ int err;
- dsp563xx_once_ir_exec(tap, DSP563XX_ONCE_OPDBR, 0, 1, 0);
- dsp563xx_write_dr_u32(tap, 0, operand, 24, 0);
- dsp563xx_execute_queue();
+ err = dsp563xx_once_ir_exec(tap, 1, reg, 1, 0, 0);
+ if (err != ERROR_OK)
+ return err;
+ err = dsp563xx_write_dr_u32(tap, data, 0x00, len, 0);
+ if (err != ERROR_OK)
+ return err;
+ if (flush)
+ err = jtag_execute_queue();
+ return err;
+}
- return ERROR_OK;
+/** once read register */
+int dsp563xx_once_reg_read(struct jtag_tap *tap, int flush, uint8_t reg, uint32_t * data)
+{
+ int err;
+
+ err = dsp563xx_once_ir_exec(tap, flush, reg, 1, 0, 0);
+ if (err != ERROR_OK)
+ return err;
+ err = dsp563xx_write_dr_u32(tap, data, 0x00, 24, 0);
+ if (err != ERROR_OK)
+ return err;
+ if (flush)
+ err = jtag_execute_queue();
+ return err;
+}
+
+/** once write register */
+int dsp563xx_once_reg_write(struct jtag_tap *tap, int flush, uint8_t reg, uint32_t data)
+{
+ int err;
+
+ err = dsp563xx_once_ir_exec(tap, flush, reg, 0, 0, 0);
+ if (err != ERROR_OK)
+ return err;
+ err = dsp563xx_write_dr_u32(tap, 0x00, data, 24, 0);
+ if (err != ERROR_OK)
+ return err;
+ if (flush)
+ err = jtag_execute_queue();
+ return err;
}
/** single word instruction */
-int dsp563xx_once_execute_sw_ir_nq(struct jtag_tap *tap, uint32_t opcode)
+int dsp563xx_once_execute_sw_ir(struct jtag_tap *tap, int flush, uint32_t opcode)
{
- dsp563xx_once_ir_exec_nq(tap, DSP563XX_ONCE_OPDBR, 0, 1, 0);
- dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
+ int err;
- return ERROR_OK;
+ err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 1, 0);
+ if (err != ERROR_OK)
+ return err;
+ err = dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
+ if (err != ERROR_OK)
+ return err;
+ if (flush)
+ err = jtag_execute_queue();
+ return err;
}
/** double word instruction */
-int dsp563xx_once_execute_dw_ir_nq(struct jtag_tap *tap, uint32_t opcode,
- uint32_t operand)
+int dsp563xx_once_execute_dw_ir(struct jtag_tap *tap, int flush, uint32_t opcode, uint32_t operand)
{
- dsp563xx_once_ir_exec_nq(tap, DSP563XX_ONCE_OPDBR, 0, 0, 0);
- dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
+ int err;
+
+ err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 0, 0);
+ if (err != ERROR_OK)
+ return err;
+ err = dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
+ if (err != ERROR_OK)
+ return err;
+ if (flush) {
+ err = jtag_execute_queue();
+ if (err != ERROR_OK)
+ return err;
+ }
- dsp563xx_once_ir_exec_nq(tap, DSP563XX_ONCE_OPDBR, 0, 1, 0);
- dsp563xx_write_dr_u32(tap, 0, operand, 24, 0);
+ err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 1, 0);
+ if (err != ERROR_OK)
+ return err;
+ err = dsp563xx_write_dr_u32(tap, 0, operand, 24, 0);
+ if (err != ERROR_OK)
+ return err;
+ if (flush) {
+ err = jtag_execute_queue();
+ if (err != ERROR_OK)
+ return err;
+ }
return ERROR_OK;
}
projects / fw / openocd / blobdiff