117 lines
3.5 KiB
C
117 lines
3.5 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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* 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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#include "config.h"
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#include "arm_jtag.h"
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#include "binarybuffer.h"
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#include "log.h"
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#include "jtag.h"
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#include <stdlib.h>
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int arm_jtag_set_instr(arm_jtag_t *jtag_info, u32 new_instr)
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{
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jtag_device_t *device = jtag_get_device(jtag_info->chain_pos);
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if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
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{
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scan_field_t field;
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field.device = jtag_info->chain_pos;
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field.num_bits = device->ir_length;
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field.out_value = calloc(CEIL(field.num_bits, 8), 1);
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buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
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field.out_mask = NULL;
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field.in_value = NULL;
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field.in_check_value = NULL;
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field.in_check_mask = NULL;
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field.in_handler = NULL;
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field.in_handler_priv = NULL;
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jtag_add_ir_scan(1, &field, -1);
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free(field.out_value);
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}
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return ERROR_OK;
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}
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int arm_jtag_scann(arm_jtag_t *jtag_info, u32 new_scan_chain)
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{
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if(jtag_info->cur_scan_chain != new_scan_chain)
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{
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scan_field_t field;
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field.device = jtag_info->chain_pos;
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field.num_bits = jtag_info->scann_size;
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field.out_value = calloc(CEIL(field.num_bits, 8), 1);
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buf_set_u32(field.out_value, 0, field.num_bits, new_scan_chain);
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field.out_mask = NULL;
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//field.in_value = &scan_n_capture;
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field.in_value = NULL;
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field.in_check_value = NULL;
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field.in_check_mask = NULL;
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field.in_handler = NULL;
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field.in_handler_priv = NULL;
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arm_jtag_set_instr(jtag_info, jtag_info->scann_instr);
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jtag_add_dr_scan(1, &field, -1);
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jtag_info->cur_scan_chain = new_scan_chain;
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free(field.out_value);
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}
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return ERROR_OK;
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}
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int arm_jtag_reset_callback(enum jtag_event event, void *priv)
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{
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arm_jtag_t *jtag_info = priv;
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if (event == JTAG_TRST_ASSERTED)
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{
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jtag_info->cur_scan_chain = 0;
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}
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return ERROR_OK;
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}
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int arm_jtag_setup_connection(arm_jtag_t *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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jtag_register_event_callback(arm_jtag_reset_callback, jtag_info);
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return ERROR_OK;
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}
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int arm_jtag_buf_to_u32_flip(u8 *in_buf, void *priv)
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{
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u32 *dest = priv;
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*dest = flip_u32(buf_get_u32(in_buf, 0, 32), 32);
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return ERROR_OK;
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}
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