1 /* swd.h 2 * 3 * Copyright 2011 Brian Swetland <swetland@frotz.net> 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #ifndef _SWDP_H_ 19 #define _SWDP_H_ 20 21 void swd_init(void); 22 void swd_reset(unsigned kind); 23 int swd_write(unsigned reg, unsigned val); 24 int swd_read(unsigned reg, unsigned *val); 25 26 unsigned swd_set_clock(unsigned khz); 27 unsigned swo_set_clock(unsigned khz); 28 void swd_hw_reset(int assert); 29 30 void jtag_init(void); 31 int jtag_io(unsigned count, unsigned tms, unsigned tdi, unsigned *tdo); 32 33 // swdp_read/write() register codes 34 35 // Park Stop Parity Addr3 Addr2 RnW APnDP Start 36 37 #define RD_IDCODE 0b10100101 38 #define RD_DPCTRL 0b10001101 39 #define RD_RESEND 0b10010101 40 #define RD_BUFFER 0b10111101 41 42 #define WR_ABORT 0b10000001 43 #define WR_DPCTRL 0b10101001 44 #define WR_SELECT 0b10110001 45 #define WR_BUFFER 0b10011001 46 47 #define RD_AP0 0b10000111 48 #define RD_AP1 0b10101111 49 #define RD_AP2 0b10110111 50 #define RD_AP3 0b10011111 51 52 #define WR_AP0 0b10100011 53 #define WR_AP1 0b10001011 54 #define WR_AP2 0b10010011 55 #define WR_AP3 0b10111011 56 57 #endif 58 59