src/target/openrisc/or1k_tap_mohor.c (OpenOCD)

// SPDX-License-Identifier: GPL-2.0-or-later /*************************************************************************** * Copyright (C) 2013 by Franck Jullien * * elec4fun@gmail.com * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "or1k_tap.h" #include "or1k.h" #include <jtag/jtag.h> #define OR1K_TAP_INST_DEBUG 0x8 static int or1k_tap_mohor_init(struct or1k_jtag *jtag_info) { LOG_DEBUG("Initialising OpenCores JTAG TAP"); /* Put TAP into state where it can talk to the debug interface * by shifting in correct value to IR. */ /* Ensure TAP is reset - maybe not necessary*/ jtag_add_tlr(); struct jtag_tap *tap = jtag_info->tap; struct scan_field field; uint8_t ir_value = OR1K_TAP_INST_DEBUG; field.num_bits = tap->ir_length; field.out_value = &ir_value; field.in_value = NULL; jtag_add_ir_scan(tap, &field, TAP_IDLE); return jtag_execute_queue(); } static struct or1k_tap_ip mohor_tap = { .name = "mohor", .init = or1k_tap_mohor_init, }; int or1k_tap_mohor_register(void) { list_add_tail(&mohor_tap.list, &tap_list); return 0; }