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- /***************************************************************************
- * Copyright (C) 2009 by Mathias Kuester *
- * mkdorg@users.sourceforge.net *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include <jim.h>
-
- #include "target.h"
- #include "target_type.h"
- #include "register.h"
- #include "dsp563xx.h"
- #include "dsp563xx_once.h"
-
- #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)
- {
- 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 inline int dsp563xx_once_ir_exec(struct jtag_tap *tap, int flush, uint8_t instr, uint8_t rw, uint8_t go, uint8_t ex)
- {
- 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;
- }
-
- 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)
- {
- return dsp563xx_write_ir_u8(tap, ir_in, ir_out, tap->ir_length, 1);
- }
-
- /** */
- int dsp563xx_once_target_status(struct jtag_tap *tap)
- {
- int err;
- uint8_t jtag_status;
-
- 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;
-
- /* verify correct static status pattern */
- if ((jtag_status & JTAG_STATUS_STATIC_MASK) != JTAG_STATUS_STATIC_VALUE)
- return TARGET_UNKNOWN;
-
- if (jtag_status != JTAG_STATUS_DEBUG)
- return TARGET_RUNNING;
-
- return TARGET_HALTED;
- }
-
- /** */
- int dsp563xx_once_request_debug(struct jtag_tap *tap, int reset_state)
- {
- 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;
- }
-
- /** once read registers */
- int dsp563xx_once_read_register(struct jtag_tap *tap, int flush, struct once_reg *regs, int len)
- {
- int i;
- int err = 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;
- }
-
- /** 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)
- {
- int err;
-
- 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;
- }
-
- /** 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(struct jtag_tap *tap, int flush, uint32_t opcode)
- {
- int err;
-
- 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(struct jtag_tap *tap, int flush, uint32_t opcode, uint32_t operand)
- {
- 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;
- }
-
- 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;
- }
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