/*************************************************************************** * Copyright (C) 2005 by Dominic Rath * * Dominic.Rath@gmx.de * * * * Copyright (C) 2007,2008 Øyvind Harboe * * oyvind.harboe@zylin.com * * * * 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" #if 0 #define _ARM_JTAG_SCAN_N_CHECK_ #endif int arm_jtag_set_instr(struct arm_jtag *jtag_info, uint32_t new_instr, void *no_verify_capture) { struct jtag_tap *tap; tap = jtag_info->tap; if (tap == NULL) return ERROR_FAIL; if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr) { struct scan_field field; uint8_t t[4]; field.tap = tap; field.num_bits = tap->ir_length; field.out_value = t; buf_set_u32(field.out_value, 0, field.num_bits, new_instr); field.in_value = NULL; if (no_verify_capture == NULL) { jtag_add_ir_scan(1, &field, jtag_get_end_state()); } else { /* FIX!!!! this is a kludge!!! arm926ejs.c should reimplement this arm_jtag_set_instr to * have special verification code. */ jtag_add_ir_scan_noverify(1, &field, jtag_get_end_state()); } } return ERROR_OK; } int arm_jtag_scann(struct arm_jtag *jtag_info, uint32_t new_scan_chain) { int retval = ERROR_OK; if (jtag_info->cur_scan_chain != new_scan_chain) { uint32_t values[1]; int num_bits[1]; values[0]=new_scan_chain; num_bits[0]=jtag_info->scann_size; if ((retval = arm_jtag_set_instr(jtag_info, jtag_info->scann_instr, NULL)) != ERROR_OK) { return retval; } jtag_add_dr_out(jtag_info->tap, 1, num_bits, values, jtag_get_end_state()); jtag_info->cur_scan_chain = new_scan_chain; } return retval; } int arm_jtag_reset_callback(enum jtag_event event, void *priv) { struct arm_jtag *jtag_info = priv; if (event == JTAG_TRST_ASSERTED) { jtag_info->cur_scan_chain = 0; } return ERROR_OK; } int arm_jtag_setup_connection(struct arm_jtag *jtag_info) { jtag_info->scann_instr = 0x2; jtag_info->cur_scan_chain = 0; jtag_info->intest_instr = 0xc; return jtag_register_event_callback(arm_jtag_reset_callback, jtag_info); } /* read JTAG buffer into host-endian uint32_t, flipping bit-order */ int arm_jtag_buf_to_u32_flip(uint8_t *in_buf, void *priv, struct scan_field_s *field) { uint32_t *dest = priv; *dest = flip_u32(le_to_h_u32(in_buf), 32); return ERROR_OK; } /* read JTAG buffer into little-endian uint32_t, flipping bit-order */ int arm_jtag_buf_to_le32_flip(uint8_t *in_buf, void *priv, struct scan_field_s *field) { h_u32_to_le(((uint8_t*)priv), flip_u32(le_to_h_u32(in_buf), 32)); return ERROR_OK; } /* read JTAG buffer into little-endian uint16_t, flipping bit-order */ int arm_jtag_buf_to_le16_flip(uint8_t *in_buf, void *priv, struct scan_field_s *field) { h_u16_to_le(((uint8_t*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff); return ERROR_OK; } /* read JTAG buffer into big-endian uint32_t, flipping bit-order */ int arm_jtag_buf_to_be32_flip(uint8_t *in_buf, void *priv, struct scan_field_s *field) { h_u32_to_be(((uint8_t*)priv), flip_u32(le_to_h_u32(in_buf), 32)); return ERROR_OK; } /* read JTAG buffer into big-endian uint16_t, flipping bit-order */ int arm_jtag_buf_to_be16_flip(uint8_t *in_buf, void *priv, struct scan_field_s *field) { h_u16_to_be(((uint8_t*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff); return ERROR_OK; } /* read JTAG buffer into uint8_t, flipping bit-order */ int arm_jtag_buf_to_8_flip(uint8_t *in_buf, void *priv, struct scan_field_s *field) { uint8_t *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 uint32_t */ int arm_jtag_buf_to_u32(uint8_t *in_buf, void *priv, struct scan_field_s *field) { uint32_t *dest = priv; *dest = le_to_h_u32(in_buf); return ERROR_OK; } /* read JTAG buffer into little-endian uint32_t */ int arm_jtag_buf_to_le32(uint8_t *in_buf, void *priv, struct scan_field_s *field) { h_u32_to_le(((uint8_t*)priv), le_to_h_u32(in_buf)); return ERROR_OK; } /* read JTAG buffer into little-endian uint16_t */ int arm_jtag_buf_to_le16(uint8_t *in_buf, void *priv, struct scan_field_s *field) { h_u16_to_le(((uint8_t*)priv), le_to_h_u32(in_buf) & 0xffff); return ERROR_OK; } /* read JTAG buffer into big-endian uint32_t */ int arm_jtag_buf_to_be32(uint8_t *in_buf, void *priv, struct scan_field_s *field) { h_u32_to_be(((uint8_t*)priv), le_to_h_u32(in_buf)); return ERROR_OK; } /* read JTAG buffer into big-endian uint16_t */ int arm_jtag_buf_to_be16(uint8_t *in_buf, void *priv, struct scan_field_s *field) { h_u16_to_be(((uint8_t*)priv), le_to_h_u32(in_buf) & 0xffff); return ERROR_OK; } /* read JTAG buffer into uint8_t */ int arm_jtag_buf_to_8(uint8_t *in_buf, void *priv, struct scan_field_s *field) { uint8_t *dest = priv; *dest = le_to_h_u32(in_buf) & 0xff; return ERROR_OK; }