101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
/***************************************************************************
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* Copyright (C) 2005 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* Copyright (C) 2007,2008 Øyvind Harboe *
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* oyvind.harboe@zylin.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "arm_jtag.h"
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#if 0
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#define _ARM_JTAG_SCAN_N_CHECK_
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#endif
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int arm_jtag_set_instr_inner(struct arm_jtag *jtag_info,
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uint32_t new_instr, void *no_verify_capture, tap_state_t end_state)
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{
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struct jtag_tap *tap;
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tap = jtag_info->tap;
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struct scan_field field;
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uint8_t t[4];
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field.num_bits = tap->ir_length;
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field.out_value = t;
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buf_set_u32(t, 0, field.num_bits, new_instr);
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field.in_value = NULL;
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if (no_verify_capture == NULL)
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jtag_add_ir_scan(tap, &field, end_state);
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else {
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/* FIX!!!! this is a kludge!!! arm926ejs.c should reimplement this arm_jtag_set_instr to
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* have special verification code.
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*/
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jtag_add_ir_scan_noverify(tap, &field, end_state);
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}
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return ERROR_OK;
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}
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int arm_jtag_scann_inner(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state)
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{
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int retval = ERROR_OK;
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uint32_t values[1];
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int num_bits[1];
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values[0] = new_scan_chain;
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num_bits[0] = jtag_info->scann_size;
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retval = arm_jtag_set_instr(jtag_info, jtag_info->scann_instr, NULL, end_state);
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if (retval != ERROR_OK)
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return retval;
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jtag_add_dr_out(jtag_info->tap,
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1,
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num_bits,
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values,
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end_state);
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jtag_info->cur_scan_chain = new_scan_chain;
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return retval;
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}
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static int arm_jtag_reset_callback(enum jtag_event event, void *priv)
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{
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struct arm_jtag *jtag_info = priv;
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if (event == JTAG_TRST_ASSERTED)
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jtag_info->cur_scan_chain = 0;
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return ERROR_OK;
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}
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int arm_jtag_setup_connection(struct arm_jtag *jtag_info)
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{
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jtag_info->scann_instr = 0x2;
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jtag_info->cur_scan_chain = 0;
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jtag_info->intest_instr = 0xc;
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return jtag_register_event_callback(arm_jtag_reset_callback, jtag_info);
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}
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