board/esd/common/xilinx_jtag/ports.h

   1 /*
   2  * (C) Copyright 2003
   3  * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /*******************************************************/
   9 /* file: ports.h                                       */
  10 /* abstract:  This file contains extern declarations   */
  11 /*            for providing stimulus to the JTAG ports.*/
  12 /*******************************************************/
  13
  14 #ifndef ports_dot_h
  15 #define ports_dot_h
  16
  17 /* these constants are used to send the appropriate ports to setPort */
  18 /* they should be enumerated types, but some of the microcontroller  */
  19 /* compilers don't like enumerated types */
  20 #define TCK (short) 0
  21 #define TMS (short) 1
  22 #define TDI (short) 2
  23
  24 /*
  25  * Use CONFIG_SYS_FPGA_xxx defines from board include file.
  26  */
  27 #define JTAG_TMS   CONFIG_SYS_FPGA_PRG     /* output */
  28 #define JTAG_TCK   CONFIG_SYS_FPGA_CLK     /* output */
  29 #define JTAG_TDI   CONFIG_SYS_FPGA_DATA    /* output */
  30 #define JTAG_TDO   CONFIG_SYS_FPGA_DONE    /* input */
  31
  32 /* set the port "p" (TCK, TMS, or TDI) to val (0 or 1) */
  33 void setPort(short p, short val);
  34
  35 /* read the TDO bit and store it in val */
  36 unsigned char readTDOBit(void);
  37
  38 /* make clock go down->up->down*/
  39 void pulseClock(void);
  40
  41 /* read the next byte of data from the xsvf file */
  42 void readByte(unsigned char *data);
  43
  44 void waitTime(long microsec);
  45
  46 #endif