From 8b4e882a1630d63bbc9840fa3f968e36b6ac3702 Mon Sep 17 00:00:00 2001 From: drath Date: Fri, 2 Jun 2006 10:36:31 +0000 Subject: - prepare OpenOCD for branching, created ./trunk/ git-svn-id: svn://svn.berlios.de/openocd/trunk@64 b42882b7-edfa-0310-969c-e2dbd0fdcd60 --- src/target/arm_jtag.c | 116 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 src/target/arm_jtag.c (limited to 'src/target/arm_jtag.c') diff --git a/src/target/arm_jtag.c b/src/target/arm_jtag.c new file mode 100644 index 00000000..c401d8f3 --- /dev/null +++ b/src/target/arm_jtag.c @@ -0,0 +1,116 @@ +/*************************************************************************** + * 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. * + ***************************************************************************/ +#include "config.h" + +#include "arm_jtag.h" + +#include "binarybuffer.h" +#include "log.h" +#include "jtag.h" + +#include + +int arm_jtag_set_instr(arm_jtag_t *jtag_info, u32 new_instr) +{ + 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 = NULL; + 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) + { + 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 = &scan_n_capture; + field.in_value = NULL; + field.in_check_value = NULL; + field.in_check_mask = NULL; + field.in_handler = NULL; + field.in_handler_priv = NULL; + + arm_jtag_set_instr(jtag_info, jtag_info->scann_instr); + 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; +} + +int arm_jtag_buf_to_u32_flip(u8 *in_buf, void *priv) +{ + u32 *dest = priv; + + *dest = flip_u32(buf_get_u32(in_buf, 0, 32), 32); + + return ERROR_OK; +} -- cgit v1.2.3