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- /***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "arm_jtag.h"
-
- #include "binarybuffer.h"
- #include "log.h"
- #include "jtag.h"
-
- #include <stdlib.h>
-
- #if 0
- #define _ARM_JTAG_SCAN_N_CHECK_
- #endif
-
- int arm_jtag_set_instr(arm_jtag_t *jtag_info, u32 new_instr, in_handler_t handler)
- {
- jtag_device_t *device = jtag_get_device(jtag_info->chain_pos);
-
- if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
- {
- scan_field_t field;
-
- field.device = jtag_info->chain_pos;
- field.num_bits = device->ir_length;
- field.out_value = calloc(CEIL(field.num_bits, 8), 1);
- buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
- field.out_mask = NULL;
- field.in_value = NULL;
- field.in_check_value = NULL;
- field.in_check_mask = NULL;
- field.in_handler = handler;
- field.in_handler_priv = NULL;
- jtag_add_ir_scan(1, &field, -1);
-
-
- free(field.out_value);
- }
-
- return ERROR_OK;
- }
-
- int arm_jtag_scann(arm_jtag_t *jtag_info, u32 new_scan_chain)
- {
- if(jtag_info->cur_scan_chain != new_scan_chain)
- {
- #ifdef _ARM_JTAG_SCAN_N_CHECK_
- u8 scan_n_check_value = 1 << (jtag_info->scann_size - 1);
- #endif
- scan_field_t field;
-
- field.device = jtag_info->chain_pos;
- field.num_bits = jtag_info->scann_size;
- field.out_value = calloc(CEIL(field.num_bits, 8), 1);
- buf_set_u32(field.out_value, 0, field.num_bits, new_scan_chain);
- field.out_mask = NULL;
- field.in_value = NULL;
- #ifdef _ARM_JTAG_SCAN_N_CHECK_
- #error FIX!!! this is broken, scan_n_check_value goes out of scope.
- jtag_set_check_value(&field, &scan_n_check_value, NULL, NULL, NULL);
- #else
- field.in_handler = NULL;
- field.in_handler_priv = NULL;
- #endif
-
-
- arm_jtag_set_instr(jtag_info, jtag_info->scann_instr, NULL);
- jtag_add_dr_scan(1, &field, -1);
-
- jtag_info->cur_scan_chain = new_scan_chain;
-
- free(field.out_value);
- }
-
- return ERROR_OK;
- }
-
- int arm_jtag_reset_callback(enum jtag_event event, void *priv)
- {
- arm_jtag_t *jtag_info = priv;
-
- if (event == JTAG_TRST_ASSERTED)
- {
- jtag_info->cur_scan_chain = 0;
- }
-
- return ERROR_OK;
- }
-
- int arm_jtag_setup_connection(arm_jtag_t *jtag_info)
- {
- jtag_info->scann_instr = 0x2;
- jtag_info->cur_scan_chain = 0;
- jtag_info->intest_instr = 0xc;
-
- jtag_register_event_callback(arm_jtag_reset_callback, jtag_info);
-
- return ERROR_OK;
- }
-
- /* read JTAG buffer into host-endian u32, flipping bit-order */
- int arm_jtag_buf_to_u32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- u32 *dest = priv;
- *dest = flip_u32(le_to_h_u32(in_buf), 32);
- return ERROR_OK;
- }
-
- /* read JTAG buffer into little-endian u32, flipping bit-order */
- int arm_jtag_buf_to_le32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- h_u32_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
- return ERROR_OK;
- }
-
- /* read JTAG buffer into little-endian u16, flipping bit-order */
- int arm_jtag_buf_to_le16_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- h_u16_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
- return ERROR_OK;
- }
-
- /* read JTAG buffer into big-endian u32, flipping bit-order */
- int arm_jtag_buf_to_be32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- h_u32_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
- return ERROR_OK;
- }
-
- /* read JTAG buffer into big-endian u16, flipping bit-order */
- int arm_jtag_buf_to_be16_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- h_u16_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
- return ERROR_OK;
- }
-
- /* read JTAG buffer into u8, flipping bit-order */
- int arm_jtag_buf_to_8_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- u8 *dest = priv;
- *dest = flip_u32(le_to_h_u32(in_buf), 32) & 0xff;
- return ERROR_OK;
- }
-
- /* not-flipping variants */
- /* read JTAG buffer into host-endian u32 */
- int arm_jtag_buf_to_u32(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- u32 *dest = priv;
- *dest = le_to_h_u32(in_buf);
- return ERROR_OK;
- }
-
- /* read JTAG buffer into little-endian u32 */
- int arm_jtag_buf_to_le32(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- h_u32_to_le(((u8*)priv), le_to_h_u32(in_buf));
- return ERROR_OK;
- }
-
- /* read JTAG buffer into little-endian u16 */
- int arm_jtag_buf_to_le16(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- h_u16_to_le(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
- return ERROR_OK;
- }
-
- /* read JTAG buffer into big-endian u32 */
- int arm_jtag_buf_to_be32(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- h_u32_to_be(((u8*)priv), le_to_h_u32(in_buf));
- return ERROR_OK;
- }
-
- /* read JTAG buffer into big-endian u16 */
- int arm_jtag_buf_to_be16(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- h_u16_to_be(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
- return ERROR_OK;
- }
-
- /* read JTAG buffer into u8 */
- int arm_jtag_buf_to_8(u8 *in_buf, void *priv, struct scan_field_s *field)
- {
- u8 *dest = priv;
- *dest = le_to_h_u32(in_buf) & 0xff;
- return ERROR_OK;
- }
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