SVF player courtesy of Simon Qian <simonqian@SimonQian.com>

git-svn-id: svn://svn.berlios.de/openocd/trunk@1339 b42882b7-edfa-0310-969c-e2dbd0fdcd60

1 files changed, 1305 insertions, 0 deletions

diff --git a/src/svf/svf.c b/src/svf/svf.c
new file mode 100644
index 00000000..baa00885
--- /dev/null
+++ b/src/svf/svf.c
@@ -0,0 +1,1305 @@
+/***************************************************************************
+ *	 Copyright (C) 2009 by Simon Qian									   *
+ *	 SimonQian@SimonQian.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.			   *
+ ***************************************************************************/
+
+
+/* The specification for SVF is available here:
+ * http://www.asset-intertech.com/support/svf.pdf
+ * Below, this document is refered to as the "SVF spec".
+ *
+ * The specification for XSVF is available here:
+ * http://www.xilinx.com/support/documentation/application_notes/xapp503.pdf
+ * Below, this document is refered to as the "XSVF spec".
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "svf.h"
+
+#include "jtag.h"
+#include "command.h"
+#include "log.h"
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include <sys/time.h>
+#include <time.h>
+
+// SVF command
+typedef enum
+{
+	ENDDR,
+	ENDIR,
+	FREQUENCY,
+	HDR,
+	HIR,
+	PIO,
+	PIOMAP,
+	RUNTEST,
+	SDR,
+	SIR,
+	STATE,
+	TDR,
+	TIR,
+	TRST,
+}svf_command_t;
+
+const char *svf_command_name[14] = 
+{
+	"ENDDR",
+	"ENDIR",
+	"FREQUENCY",
+	"HDR",
+	"HIR",
+	"PIO",
+	"PIOMAP",
+	"RUNTEST",
+	"SDR",
+	"SIR",
+	"STATE",
+	"TDR",
+	"TIR",
+	"TRST"
+};
+
+typedef enum
+{
+	TRST_ON,
+	TRST_OFF,
+	TRST_Z,
+	TRST_ABSENT
+}trst_mode_t;
+
+const char *svf_trst_mode_name[4] =
+{
+	"ON",
+	"OFF",
+	"Z",
+	"ABSENT"
+};
+
+char *svf_tap_state_name[16];
+
+#define XXR_TDI						(1 << 0)
+#define XXR_TDO						(1 << 1)
+#define XXR_MASK					(1 << 2)
+#define XXR_SMASK					(1 << 3)
+typedef struct
+{
+	int len;
+	int data_mask;
+	u8 *tdi;
+	u8 *tdo;
+	u8 *mask;
+	u8 *smask;
+}svf_xxr_para_t;
+
+typedef struct
+{
+	float frequency;
+	tap_state_t ir_end_state;
+	tap_state_t dr_end_state;
+	tap_state_t runtest_run_state;
+	tap_state_t runtest_end_state;
+	trst_mode_t trst_mode;
+
+	svf_xxr_para_t hir_para;
+	svf_xxr_para_t hdr_para;
+	svf_xxr_para_t tir_para;
+	svf_xxr_para_t tdr_para;
+	svf_xxr_para_t sir_para;
+	svf_xxr_para_t sdr_para;
+}svf_para_t;
+
+svf_para_t svf_para;
+const svf_para_t svf_para_init = 
+{
+//	frequency,	ir_end_state,	dr_end_state,	runtest_run_state,	runtest_end_state,	trst_mode
+	0,			TAP_IDLE,		TAP_IDLE,		TAP_IDLE,			TAP_IDLE,			TRST_Z,
+//	hir_para
+//	{len,	data_mask,	tdi,	tdo,	mask,	smask},
+	{0,		0,			NULL,	NULL,	NULL,	NULL},
+//	hdr_para
+//	{len,	data_mask,	tdi,	tdo,	mask,	smask},
+	{0,		0,			NULL,	NULL,	NULL,	NULL},
+//	tir_para
+//	{len,	data_mask,	tdi,	tdo,	mask,	smask},
+	{0,		0,			NULL,	NULL,	NULL,	NULL},
+//	tdr_para
+//	{len,	data_mask,	tdi,	tdo,	mask,	smask},
+	{0,		0,			NULL,	NULL,	NULL,	NULL},
+//	sir_para
+//	{len,	data_mask,	tdi,	tdo,	mask,	smask},
+	{0,		0,			NULL,	NULL,	NULL,	NULL},
+//	sdr_para
+//	{len,	data_mask,	tdi,	tdo,	mask,	smask},
+	{0,		0,			NULL,	NULL,	NULL,	NULL},
+};
+
+typedef struct
+{
+	int line_num;		// used to record line number of the check operation
+						// so more information could be printed
+	int enabled;		// check is enabled or not
+	int buffer_offset;	// buffer_offset to buffers
+	int bit_len;		// bit length to check
+}svf_check_tdo_para_t;
+
+#define SVF_CHECK_TDO_PARA_SIZE	1024
+static svf_check_tdo_para_t *svf_check_tdo_para = NULL;
+static int svf_check_tdo_para_index = 0;
+
+#define dimof(a)					(sizeof(a) / sizeof((a)[0]))
+
+static int svf_read_command_from_file(int fd);
+static int svf_check_tdo(void);
+static int svf_add_check_para(u8 enabled, int buffer_offset, int bit_len);
+static int svf_run_command(struct command_context_s *cmd_ctx, char *cmd_str);
+static int handle_svf_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+
+static int svf_fd = 0;
+static char *svf_command_buffer = NULL;
+static int svf_command_buffer_size = 0;
+static int svf_line_number = 1;
+
+static jtag_tap_t *tap = NULL;
+
+#define SVF_MAX_BUFFER_SIZE_TO_COMMIT	(4 * 1024)
+static u8 *svf_tdi_buffer = NULL, *svf_tdo_buffer = NULL, *svf_mask_buffer = NULL;
+static int svf_buffer_index = 0, svf_buffer_size = 0;
+
+
+int svf_register_commands(struct command_context_s *cmd_ctx)
+{
+	register_command(cmd_ctx, NULL, "svf", handle_svf_command,
+		COMMAND_EXEC, "run svf <file>");
+
+	return ERROR_OK;
+}
+
+void svf_free_xxd_para(svf_xxr_para_t *para)
+{
+	if (NULL != para)
+	{
+		if (para->tdi != NULL)
+		{
+			free(para->tdi);
+			para->tdi = NULL;
+		}
+		if (para->tdo != NULL)
+		{
+			free(para->tdo);
+			para->tdo = NULL;
+		}
+		if (para->mask != NULL)
+		{
+			free(para->mask);
+			para->mask = NULL;
+		}
+		if (para->smask != NULL)
+		{
+			free(para->smask);
+			para->smask = NULL;
+		}
+	}
+}
+
+static int handle_svf_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+	int command_num = 0, i;
+	int ret = ERROR_OK;
+
+	if (argc < 1)
+	{
+		command_print(cmd_ctx, "usage: svf <file>");
+		return ERROR_FAIL;
+	}
+
+	if ((svf_fd = open(args[0], O_RDONLY)) < 0)
+	{
+		command_print(cmd_ctx, "file \"%s\" not found", args[0]);
+		return ERROR_FAIL;
+	}
+
+	LOG_USER("svf processing file: \"%s\"", args[0]);
+
+	// init
+	svf_line_number = 1;
+	svf_command_buffer_size = 0;
+
+	svf_check_tdo_para_index = 0;
+	svf_check_tdo_para = malloc(sizeof(svf_check_tdo_para_t) * SVF_CHECK_TDO_PARA_SIZE);
+	if (NULL == svf_check_tdo_para)
+	{
+		LOG_ERROR("not enough memory");
+		ret = ERROR_FAIL;
+		goto free_all;
+	}
+
+	svf_buffer_index = 0;
+	// double the buffer size
+	// in case current command cannot be commited, and next command is a bit scan command
+	// here is 32K bits for this big scan command, it should be enough
+	// buffer will be reallocated if buffer size is not enough
+	svf_tdi_buffer = (u8 *)malloc(2 * SVF_MAX_BUFFER_SIZE_TO_COMMIT);
+	if (NULL == svf_tdi_buffer)
+	{
+		LOG_ERROR("not enough memory");
+		ret = ERROR_FAIL;
+		goto free_all;
+	}
+	svf_tdo_buffer = (u8 *)malloc(2 * SVF_MAX_BUFFER_SIZE_TO_COMMIT);
+	if (NULL == svf_tdo_buffer)
+	{
+		LOG_ERROR("not enough memory");
+		ret = ERROR_FAIL;
+		goto free_all;
+	}
+	svf_mask_buffer = (u8 *)malloc(2 * SVF_MAX_BUFFER_SIZE_TO_COMMIT);
+	if (NULL == svf_mask_buffer)
+	{
+		LOG_ERROR("not enough memory");
+		ret = ERROR_FAIL;
+		goto free_all;
+	}
+	svf_buffer_size = 2 * SVF_MAX_BUFFER_SIZE_TO_COMMIT;
+
+	memcpy(&svf_para, &svf_para_init, sizeof(svf_para));
+	for (i = 0; i < dimof(svf_tap_state_name); i++)
+	{
+		svf_tap_state_name[i] = (char *)jtag_state_name(i);
+	}
+	// TAP_RESET
+	jtag_add_tlr();
+
+	while ( ERROR_OK == svf_read_command_from_file(svf_fd) )
+	{
+		if (ERROR_OK != svf_run_command(cmd_ctx, svf_command_buffer))
+		{
+			LOG_ERROR("fail to run command at line %d", svf_line_number);
+			ret = ERROR_FAIL;
+			break;
+		}
+		command_num++;
+	}
+	if (ERROR_OK != jtag_execute_queue())
+	{
+		ret = ERROR_FAIL;
+	}
+	else if (ERROR_OK != svf_check_tdo())
+	{
+		ret = ERROR_FAIL;
+	}
+
+free_all:
+
+	close(svf_fd);
+	svf_fd = 0;
+
+	// free buffers
+	if (svf_command_buffer)
+	{
+		free(svf_command_buffer);
+		svf_command_buffer = NULL;
+		svf_command_buffer_size = 0;
+	}
+	if (svf_check_tdo_para)
+	{
+		free(svf_check_tdo_para);
+		svf_check_tdo_para = NULL;
+		svf_check_tdo_para_index = 0;
+	}
+	if (svf_tdi_buffer)
+	{
+		free(svf_tdi_buffer);
+		svf_tdi_buffer = NULL;
+	}
+	if (svf_tdo_buffer)
+	{
+		free(svf_tdo_buffer);
+		svf_tdo_buffer = NULL;
+	}
+	if (svf_mask_buffer)
+	{
+		free(svf_mask_buffer);
+		svf_mask_buffer = NULL;
+	}
+	svf_buffer_index = 0;
+	svf_buffer_size = 0;
+
+	svf_free_xxd_para(&svf_para.hdr_para);
+	svf_free_xxd_para(&svf_para.hir_para);
+	svf_free_xxd_para(&svf_para.tdr_para);
+	svf_free_xxd_para(&svf_para.tir_para);
+	svf_free_xxd_para(&svf_para.sdr_para);
+	svf_free_xxd_para(&svf_para.sir_para);
+
+	if (ERROR_OK == ret)
+	{
+		command_print(cmd_ctx, "svf file programmed successfully for %d commands", command_num);
+	}
+	else
+	{
+		command_print(cmd_ctx, "svf file programmed failed");
+	}
+
+	return ret;
+}
+
+#define SVFP_CMD_INC_CNT			1024
+static int svf_read_command_from_file(int fd)
+{
+	char ch, *tmp_buffer = NULL;
+	int cmd_pos = 0, cmd_ok = 0, slash = 0, comment = 0;
+
+	while (!cmd_ok && (read(fd, &ch, 1) > 0) )
+	{
+		switch(ch)
+		{
+		case '!':
+			slash = 0;
+			comment = 1;
+			break;
+		case '/':
+			if (++slash == 2)
+			{
+				comment = 1;
+			}
+			break;
+		case ';':
+			slash = 0;
+			if (!comment)
+			{
+				cmd_ok = 1;
+			}
+			break;
+		case '\n':
+			svf_line_number++;
+		case '\r':
+			slash = 0;
+			comment = 0;
+			break;
+		default:
+			if (!comment)
+			{
+				if (cmd_pos >= svf_command_buffer_size - 1)
+				{
+					tmp_buffer = (char*)malloc(svf_command_buffer_size + SVFP_CMD_INC_CNT);		// 1 more byte for '\0'
+					if (NULL == tmp_buffer)
+					{
+						LOG_ERROR("not enough memory");
+						return ERROR_FAIL;
+					}
+					if (svf_command_buffer_size > 0)
+					{
+						memcpy(tmp_buffer, svf_command_buffer, svf_command_buffer_size);
+					}
+					if (svf_command_buffer != NULL)
+					{
+						free(svf_command_buffer);
+					}
+					svf_command_buffer = tmp_buffer;
+					svf_command_buffer_size += SVFP_CMD_INC_CNT;
+					tmp_buffer = NULL;
+				}
+				svf_command_buffer[cmd_pos++] = (char)toupper(ch);
+			}
+			break;
+		}
+	}
+
+	if (cmd_ok)
+	{
+		svf_command_buffer[cmd_pos] = '\0';
+		return ERROR_OK;
+	}
+	else
+	{
+		return ERROR_FAIL;
+	}
+}
+
+static int svf_parse_cmd_string(char *str, int len, char **argus, int *num_of_argu)
+{
+	int pos = 0, num = 0, space_found = 1;
+
+	while (pos < len)
+	{
+		switch(str[pos])
+		{
+		case '\n':
+		case '\r':
+		case '!':
+		case '/':
+			LOG_ERROR("fail to parse svf command");
+			return ERROR_FAIL;
+			break;
+		case ' ':
+			space_found = 1;
+			str[pos] = '\0';
+			break;
+		default:
+			if (space_found)
+			{
+				argus[num++] = &str[pos];
+				space_found = 0;
+			}
+			break;
+		}
+		pos++;
+	}
+
+	*num_of_argu = num;
+
+	return ERROR_OK;
+}
+
+static int svf_tap_state_is_stable(tap_state_t state)
+{
+	return ((TAP_RESET == state) || (TAP_IDLE == state) || (TAP_DRPAUSE == state) || (TAP_IRPAUSE == state));
+}
+
+static int svf_tap_state_is_valid(tap_state_t state)
+{
+	return ((state >= 0) && (state < sizeof(svf_tap_state_name)));
+}
+
+static int svf_find_string_in_array(char *str, char **strs, int num_of_element)
+{
+	int i;
+
+	for (i = 0; i < num_of_element; i++)
+	{
+		if (!strcmp(str, strs[i]))
+		{
+			return i;
+		}
+	}
+	return 0xFF;
+}
+
+static int svf_adjust_array_length(u8 **arr, int orig_bit_len, int new_bit_len)
+{
+	int new_byte_len = (new_bit_len + 7) >> 3;
+
+	if ((NULL == *arr) || (((orig_bit_len + 7) >> 3) < ((new_bit_len + 7) >> 3)))
+	{
+		if (*arr != NULL)
+		{
+			free(*arr);
+			*arr = NULL;
+		}
+		*arr = (u8*)malloc(new_byte_len);
+		if (NULL == *arr)
+		{
+			LOG_ERROR("not enough memory");
+			return ERROR_FAIL;
+		}
+		memset(*arr, 0, new_byte_len);
+	}
+	return ERROR_OK;
+}
+
+static int svf_copy_hexstring_to_binary(char *str, u8 **bin, int orig_bit_len, int bit_len)
+{
+	int i, str_len = strlen(str), str_byte_len = (bit_len + 3) >> 2, loop_cnt;
+	u8 ch, need_write = 1;
+
+	if (ERROR_OK != svf_adjust_array_length(bin, orig_bit_len, bit_len))
+	{
+		LOG_ERROR("fail to adjust length of array");
+		return ERROR_FAIL;
+	}
+
+	if (str_byte_len > str_len)
+	{
+		loop_cnt = str_byte_len;
+	}
+	else
+	{
+		loop_cnt = str_len;
+	}
+
+	for (i = 0; i < loop_cnt; i++)
+	{
+		if (i < str_len)
+		{
+			ch = str[str_len - i - 1];
+			if ((ch >= '0') && (ch <= '9'))
+			{
+				ch = ch - '0';
+			}
+			else if ((ch >= 'A') && (ch <= 'F'))
+			{
+				ch = ch - 'A' + 10;
+			}
+			else
+			{
+				LOG_ERROR("invalid hex string");
+				return ERROR_FAIL;
+			}
+		}
+		else
+		{
+			ch = 0;
+		}
+
+		// check valid
+		if (i >= str_byte_len)
+		{
+			// all data written, other data should be all '0's and needn't to be written
+			need_write = 0;
+			if (ch != 0)
+			{
+				LOG_ERROR("value execede length");
+				return ERROR_FAIL;
+			}
+		}
+		else if (i == (str_byte_len - 1))
+		{
+			// last data byte, written if valid
+			if ((ch & ~((1 << (bit_len - 4 * i)) - 1)) != 0)
+			{
+				LOG_ERROR("value execede length");
+				return ERROR_FAIL;
+			}
+		}
+
+		if (need_write)
+		{
+			// write bin
+			if (i % 2)
+			{
+				// MSB
+				(*bin)[i / 2] |= ch << 4;
+			}
+			else
+			{
+				// LSB
+				(*bin)[i / 2] = 0;
+				(*bin)[i / 2] |= ch;
+			}
+		}
+	}
+
+	return ERROR_OK;
+}
+
+static int svf_check_tdo(void)
+{
+	int i, j, byte_len, index;
+
+	for (i = 0; i < svf_check_tdo_para_index; i++)
+	{
+		if (svf_check_tdo_para[i].enabled)
+		{
+			byte_len = (svf_check_tdo_para[i].bit_len + 7) >> 3;
+			index = svf_check_tdo_para[i].buffer_offset;
+			for (j = 0; j < byte_len; j++)
+			{
+				if ((svf_tdi_buffer[index + j] & svf_mask_buffer[index + j]) != svf_tdo_buffer[index + j])
+				{
+					LOG_ERROR("tdo check error at line %d, read = 0x%X, want = 0x%X, mask = 0x%X", 
+								svf_check_tdo_para[i].line_num, 
+								(*(int*)(svf_tdi_buffer + index)) & ((1 << svf_check_tdo_para[i].bit_len) - 1), 
+								(*(int*)(svf_tdo_buffer + index)) & ((1 << svf_check_tdo_para[i].bit_len) - 1), 
+								(*(int*)(svf_mask_buffer + index)) & ((1 << svf_check_tdo_para[i].bit_len) - 1));
+					return ERROR_FAIL;
+				}
+			}
+		}
+	}
+	svf_check_tdo_para_index = 0;
+
+	return ERROR_OK;
+}
+
+static int svf_add_check_para(u8 enabled, int buffer_offset, int bit_len)
+{
+	if (svf_check_tdo_para_index >= SVF_CHECK_TDO_PARA_SIZE)
+	{
+		LOG_ERROR("toooooo many operation undone");
+		return ERROR_FAIL;
+	}
+
+	svf_check_tdo_para[svf_check_tdo_para_index].line_num = svf_line_number;
+	svf_check_tdo_para[svf_check_tdo_para_index].bit_len = bit_len;
+	svf_check_tdo_para[svf_check_tdo_para_index].enabled = enabled;
+	svf_check_tdo_para[svf_check_tdo_para_index].buffer_offset = buffer_offset;
+	svf_check_tdo_para_index++;
+
+	return ERROR_OK;
+}
+
+// not good to use this
+extern jtag_command_t** jtag_get_last_command_p(void);
+extern void* cmd_queue_alloc(size_t size);
+extern jtag_command_t **last_comand_pointer;
+
+static int svf_run_command(struct command_context_s *cmd_ctx, char *cmd_str)
+{
+	char *argus[256], command;
+	int num_of_argu = 0, i;
+
+	// tmp variable
+	int i_tmp;
+
+	// not good to use this
+	jtag_command_t **last_cmd;
+
+	// for RUNTEST
+	int run_count;
+	float min_time, max_time;
+	// for XXR
+	svf_xxr_para_t *xxr_para_tmp;
+	u8 **pbuffer_tmp;
+	scan_field_t field;
+	// for STATE
+	tap_state_t *path = NULL, state;
+
+	LOG_DEBUG("%s", cmd_str);
+
+	if (ERROR_OK != svf_parse_cmd_string(cmd_str, strlen(cmd_str), argus, &num_of_argu))
+	{
+		return ERROR_FAIL;
+	}
+
+	command = svf_find_string_in_array(argus[0], (char **)svf_command_name, dimof(svf_command_name));
+	switch(command)
+	{
+	case ENDDR:
+	case ENDIR:
+		if (num_of_argu != 2)
+		{
+			LOG_ERROR("invalid parameter of %s", argus[0]);
+			return ERROR_FAIL;
+		}
+		i_tmp = svf_find_string_in_array(argus[1], (char **)svf_tap_state_name, dimof(svf_tap_state_name));
+		if (svf_tap_state_is_stable(i_tmp))
+		{
+			if (command == ENDIR)
+			{
+				svf_para.ir_end_state = i_tmp;
+				LOG_DEBUG("\tir_end_state = %s", svf_tap_state_name[svf_para.ir_end_state]);
+			}
+			else
+			{
+				svf_para.dr_end_state = i_tmp;
+				LOG_DEBUG("\tdr_end_state = %s", svf_tap_state_name[svf_para.dr_end_state]);
+			}
+		}
+		else
+		{
+			LOG_ERROR("%s is not valid state", argus[1]);
+			return ERROR_FAIL;
+		}
+		break;
+	case FREQUENCY:
+		if ((num_of_argu != 1) && (num_of_argu != 3))
+		{
+			LOG_ERROR("invalid parameter of %s", argus[0]);
+			return ERROR_FAIL;
+		}
+		if (1 == num_of_argu)
+		{
+			// TODO: set jtag speed to full speed
+			svf_para.frequency = 0;
+		}
+		else
+		{
+			if (strcmp(argus[2], "HZ"))
+			{
+				LOG_ERROR("HZ not found in FREQUENCY command");
+				return ERROR_FAIL;
+			}
+			svf_para.frequency = atof(argus[1]);
+			// TODO: set jtag speed to
+			if (svf_para.frequency > 0)
+			{
+				command_run_linef(cmd_ctx, "jtag_khz %d", (int)svf_para.frequency / 1000);
+				LOG_DEBUG("\tfrequency = %f", svf_para.frequency);
+			}
+		}
+		break;
+	case HDR:
+		xxr_para_tmp = &svf_para.hdr_para;
+		goto XXR_common;
+	case HIR:
+		xxr_para_tmp = &svf_para.hir_para;
+		goto XXR_common;
+	case TDR:
+		xxr_para_tmp = &svf_para.tdr_para;
+		goto XXR_common;
+	case TIR:
+		xxr_para_tmp = &svf_para.tir_para;
+		goto XXR_common;
+	case SDR:
+		xxr_para_tmp = &svf_para.sdr_para;
+		goto XXR_common;
+	case SIR:
+		xxr_para_tmp = &svf_para.sir_para;
+		goto XXR_common;
+		XXR_common:
+		// XXR length [TDI (tdi)] [TDO (tdo)][MASK (mask)] [SMASK (smask)]
+		if ((num_of_argu > 10) || (num_of_argu % 2))
+		{
+			LOG_ERROR("invalid parameter of %s", argus[0]);
+			return ERROR_FAIL;
+		}
+		i_tmp = xxr_para_tmp->len;
+		xxr_para_tmp->len = atoi(argus[1]);
+		LOG_DEBUG("\tlength = %d", xxr_para_tmp->len);
+		xxr_para_tmp->data_mask = 0;
+		for (i = 2; i < num_of_argu; i += 2)
+		{
+			if ((argus[i + 1][0] != '(') || (argus[i + 1][strlen(argus[i + 1]) - 1] != ')'))
+			{
+				LOG_ERROR("data section error");
+				return ERROR_FAIL;
+			}
+			argus[i + 1][strlen(argus[i + 1]) - 1] = '\0';
+			// TDI, TDO, MASK, SMASK
+			if (!strcmp(argus[i], "TDI"))
+			{
+				// TDI
+				pbuffer_tmp = &xxr_para_tmp->tdi;
+				xxr_para_tmp->data_mask |= XXR_TDI;
+			}
+			else if (!strcmp(argus[i], "TDO"))
+			{
+				// TDO
+				pbuffer_tmp = &xxr_para_tmp->tdo;
+				xxr_para_tmp->data_mask |= XXR_TDO;
+			}
+			else if (!strcmp(argus[i], "MASK"))
+			{
+				// MASK
+				pbuffer_tmp = &xxr_para_tmp->mask;
+				xxr_para_tmp->data_mask |= XXR_MASK;
+			}
+			else if (!strcmp(argus[i], "SMASK"))
+			{
+				// SMASK
+				pbuffer_tmp = &xxr_para_tmp->smask;
+				xxr_para_tmp->data_mask |= XXR_SMASK;
+			}
+			else
+			{
+				LOG_ERROR("unknow parameter: %s", argus[i]);
+				return ERROR_FAIL;
+			}
+			if (ERROR_OK != svf_copy_hexstring_to_binary(&argus[i + 1][1], pbuffer_tmp, i_tmp, xxr_para_tmp->len))
+			{
+				LOG_ERROR("fail to parse hex value");
+				return ERROR_FAIL;
+			}
+			LOG_DEBUG("\t%s = 0x%X", argus[i], (**(int**)pbuffer_tmp) & ((1 << (xxr_para_tmp->len)) - 1));
+		}
+		// If a command changes the length of the last scan of the same type and the MASK parameter is absent, 
+		// the mask pattern used is all cares
+		if (!(xxr_para_tmp->data_mask & XXR_MASK) && (i_tmp != xxr_para_tmp->len))
+		{
+			// MASK not defined and length changed
+			if (ERROR_OK != svf_adjust_array_length(&xxr_para_tmp->mask, i_tmp, xxr_para_tmp->len))
+			{
+				LOG_ERROR("fail to adjust length of array");
+				return ERROR_FAIL;
+			}
+			buf_set_ones(xxr_para_tmp->mask, xxr_para_tmp->len);
+		}
+		// do scan if necessary
+		if (SDR == command)
+		{
+			// check buffer size first, reallocate if necessary
+			i = svf_para.hdr_para.len + svf_para.sdr_para.len + svf_para.tdr_para.len;
+			if ((svf_buffer_size - svf_buffer_index) < ((i + 7) >> 3))
+			{
+#if 1
+				// simply print error message
+				LOG_ERROR("buffer is not enough, report to author");
+				return ERROR_FAIL;
+#else
+				u8 *buffer_tmp;
+
+				// reallocate buffer
+				buffer_tmp = (u8 *)malloc(svf_buffer_index + ((i + 7) >> 3));
+				if (NULL == buffer_tmp)
+				{
+					LOG_ERROR("not enough memory");
+					return ERROR_FAIL;
+				}
+				memcpy(buffer_tmp, svf_tdi_buffer, svf_buffer_index);
+				// svf_tdi_buffer isn't NULL here
+				free(svf_tdi_buffer);
+				svf_tdi_buffer = buffer_tmp;
+
+				buffer_tmp = (u8 *)malloc(svf_buffer_index + ((i + 7) >> 3));
+				if (NULL == buffer_tmp)
+				{
+					LOG_ERROR("not enough memory");
+					return ERROR_FAIL;
+				}
+				memcpy(buffer_tmp, svf_tdo_buffer, svf_buffer_index);
+				// svf_tdo_buffer isn't NULL here
+				free(svf_tdo_buffer);
+				svf_tdo_buffer = buffer_tmp;
+
+				buffer_tmp = (u8 *)malloc(svf_buffer_index + ((i + 7) >> 3));
+				if (NULL == buffer_tmp)
+				{
+					LOG_ERROR("not enough memory");
+					return ERROR_FAIL;
+				}
+				memcpy(buffer_tmp, svf_mask_buffer, svf_buffer_index);
+				// svf_mask_buffer isn't NULL here
+				free(svf_mask_buffer);
+				svf_mask_buffer = buffer_tmp;
+
+				buffer_tmp = NULL;
+				svf_buffer_size = svf_buffer_index + ((i + 7) >> 3);
+#endif
+			}
+
+			// assemble dr data
+			i = 0;
+			buf_set_buf(svf_para.hdr_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.hdr_para.len);
+			i += svf_para.hdr_para.len;
+			buf_set_buf(svf_para.sdr_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.sdr_para.len);
+			i += svf_para.sdr_para.len;
+			buf_set_buf(svf_para.tdr_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.tdr_para.len);
+			i += svf_para.tdr_para.len;
+
+			// add check data
+			if (svf_para.sdr_para.data_mask & XXR_TDO)
+			{
+				// assemble dr mask data
+				i = 0;
+				buf_set_buf(svf_para.hdr_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.hdr_para.len);
+				i += svf_para.hdr_para.len;
+				buf_set_buf(svf_para.sdr_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.sdr_para.len);
+				i += svf_para.sdr_para.len;
+				buf_set_buf(svf_para.tdr_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.tdr_para.len);
+				i += svf_para.tdr_para.len;
+				// assemble dr check data
+				i = 0;
+				buf_set_buf(svf_para.hdr_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.hdr_para.len);
+				i += svf_para.hdr_para.len;
+				buf_set_buf(svf_para.sdr_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.sdr_para.len);
+				i += svf_para.sdr_para.len;
+				buf_set_buf(svf_para.tdr_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.tdr_para.len);
+				i += svf_para.tdr_para.len;
+
+				svf_add_check_para(1, svf_buffer_index, i);
+			}
+			else
+			{
+				svf_add_check_para(0, svf_buffer_index, i);
+			}
+			field.tap = tap;
+			field.num_bits = i;
+			field.out_value = &svf_tdi_buffer[svf_buffer_index];
+			field.out_mask = NULL;
+			field.in_value = &svf_tdi_buffer[svf_buffer_index];
+			field.in_check_value = NULL;
+			field.in_check_mask = NULL;
+			field.in_handler = NULL;
+			field.in_handler_priv = NULL;
+			jtag_add_plain_dr_scan(1, &field, svf_para.dr_end_state);
+
+			svf_buffer_index += (i + 7) >> 3;
+		}
+		else if (SIR == command)
+		{
+			// check buffer size first, reallocate if necessary
+			i = svf_para.hir_para.len + svf_para.sir_para.len + svf_para.tir_para.len;
+			if ((svf_buffer_size - svf_buffer_index) < ((i + 7) >> 3))
+			{
+#if 1
+				// simply print error message
+				LOG_ERROR("buffer is not enough, report to author");
+				return ERROR_FAIL;
+#else
+				u8 *buffer_tmp;
+
+				// reallocate buffer
+				buffer_tmp = (u8 *)malloc(svf_buffer_index + ((i + 7) >> 3));
+				if (NULL == buffer_tmp)
+				{
+					LOG_ERROR("not enough memory");
+					return ERROR_FAIL;
+				}
+				memcpy(buffer_tmp, svf_tdi_buffer, svf_buffer_index);
+				// svf_tdi_buffer isn't NULL here
+				free(svf_tdi_buffer);
+				svf_tdi_buffer = buffer_tmp;
+
+				buffer_tmp = (u8 *)malloc(svf_buffer_index + ((i + 7) >> 3));
+				if (NULL == buffer_tmp)
+				{
+					LOG_ERROR("not enough memory");
+					return ERROR_FAIL;
+				}
+				memcpy(buffer_tmp, svf_tdo_buffer, svf_buffer_index);
+				// svf_tdo_buffer isn't NULL here
+				free(svf_tdo_buffer);
+				svf_tdo_buffer = buffer_tmp;
+
+				buffer_tmp = (u8 *)malloc(svf_buffer_index + ((i + 7) >> 3));
+				if (NULL == buffer_tmp)
+				{
+					LOG_ERROR("not enough memory");
+					return ERROR_FAIL;
+				}
+				memcpy(buffer_tmp, svf_mask_buffer, svf_buffer_index);
+				// svf_mask_buffer isn't NULL here
+				free(svf_mask_buffer);
+				svf_mask_buffer = buffer_tmp;
+
+				buffer_tmp = NULL;
+				svf_buffer_size = svf_buffer_index + ((i + 7) >> 3);
+#endif
+			}
+
+			// assemble ir data
+			i = 0;
+			buf_set_buf(svf_para.hir_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.hir_para.len);
+			i += svf_para.hir_para.len;
+			buf_set_buf(svf_para.sir_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.sir_para.len);
+			i += svf_para.sir_para.len;
+			buf_set_buf(svf_para.tir_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.tir_para.len);
+			i += svf_para.tir_para.len;
+
+			// add check data
+			if (svf_para.sir_para.data_mask & XXR_TDO)
+			{
+				// assemble dr mask data
+				i = 0;
+				buf_set_buf(svf_para.hir_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.hir_para.len);
+				i += svf_para.hir_para.len;
+				buf_set_buf(svf_para.sir_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.sir_para.len);
+				i += svf_para.sir_para.len;
+				buf_set_buf(svf_para.tir_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.tir_para.len);
+				i += svf_para.tir_para.len;
+				// assemble dr check data
+				i = 0;
+				buf_set_buf(svf_para.hir_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.hir_para.len);
+				i += svf_para.hir_para.len;
+				buf_set_buf(svf_para.sir_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.sir_para.len);
+				i += svf_para.sir_para.len;
+				buf_set_buf(svf_para.tir_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.tir_para.len);
+				i += svf_para.tir_para.len;
+
+				svf_add_check_para(1, svf_buffer_index, i);
+			}
+			else
+			{
+				svf_add_check_para(0, svf_buffer_index, i);
+			}
+			field.tap = tap;
+			field.num_bits = i;
+			field.out_value = &svf_tdi_buffer[svf_buffer_index];
+			field.out_mask = NULL;
+			field.in_value = &svf_tdi_buffer[svf_buffer_index];
+			field.in_check_value = NULL;
+			field.in_check_mask = NULL;
+			field.in_handler = NULL;
+			field.in_handler_priv = NULL;
+			jtag_add_plain_ir_scan(1, &field, svf_para.ir_end_state);
+
+			svf_buffer_index += (i + 7) >> 3;
+		}
+		break;
+	case PIO:
+	case PIOMAP:
+		LOG_ERROR("PIO and PIOMAP are not supported");
+		return ERROR_FAIL;
+		break;
+	case RUNTEST:
+		// RUNTEST [run_state] run_count run_clk [min_time SEC [MAXIMUM max_time SEC]] [ENDSTATE end_state]
+		// RUNTEST [run_state] min_time SEC [MAXIMUM max_time SEC] [ENDSTATE end_state]
+		if ((num_of_argu < 3) && (num_of_argu > 11))
+		{
+			LOG_ERROR("invalid parameter of %s", argus[0]);
+			return ERROR_FAIL;
+		}
+		// init
+		run_count = 0;
+		min_time = 0;
+		max_time = 0;
+		i = 1;
+		// run_state
+		i_tmp = svf_find_string_in_array(argus[i], (char **)svf_tap_state_name, dimof(svf_tap_state_name));
+		if (svf_tap_state_is_valid(i_tmp))
+		{
+			if (svf_tap_state_is_stable(i_tmp))
+			{
+				svf_para.runtest_run_state = i_tmp;
+
+				// When a run_state is specified, the new  run_state becomes the default end_state
+				svf_para.runtest_end_state = i_tmp;
+				LOG_DEBUG("\trun_state = %s", svf_tap_state_name[svf_para.runtest_run_state]);
+				i++;
+			}
+			else
+			{
+				LOG_ERROR("%s is not valid state", svf_tap_state_name[i_tmp]);
+				return ERROR_FAIL;
+			}
+		}
+		// run_count run_clk
+		if (((i + 2) <= num_of_argu) && strcmp(argus[i + 1], "SEC"))
+		{
+			if (!strcmp(argus[i + 1], "TCK"))
+			{
+				// clock source is TCK
+				run_count = atoi(argus[i]);
+				LOG_DEBUG("\trun_count@TCK = %d", run_count);
+			}
+			else
+			{
+				LOG_ERROR("%s not supported for clock", argus[i + 1]);
+				return ERROR_FAIL;
+			}
+			i += 2;
+		}
+		// min_time SEC
+		if (((i + 2) <= num_of_argu) && !strcmp(argus[i + 1], "SEC"))
+		{
+			min_time = atof(argus[i]);
+			LOG_DEBUG("\tmin_time = %fs", min_time);
+			i += 2;
+		}
+		// MAXIMUM max_time SEC
+		if (((i + 3) <= num_of_argu) && !strcmp(argus[i], "MAXIMUM") && !strcmp(argus[i + 2], "SEC"))
+		{
+			max_time = atof(argus[i + 1]);
+			LOG_DEBUG("\tmax_time = %fs", max_time);
+			i += 3;
+		}
+		// ENDSTATE end_state
+		if (((i + 2) <= num_of_argu) && !strcmp(argus[i], "ENDSTATE"))
+		{
+			i_tmp = svf_find_string_in_array(argus[i + 1], (char **)svf_tap_state_name, dimof(svf_tap_state_name));
+			if (svf_tap_state_is_stable(i_tmp))
+			{
+				svf_para.runtest_end_state = i_tmp;
+				LOG_DEBUG("\tend_state = %s", svf_tap_state_name[svf_para.runtest_end_state]);
+			}
+			else
+			{
+				LOG_ERROR("%s is not valid state", svf_tap_state_name[i_tmp]);
+				return ERROR_FAIL;
+			}
+			i += 2;
+		}
+		// calculate run_count
+		if ((0 == run_count) && (min_time > 0))
+		{
+			run_count = min_time * svf_para.frequency;
+		}
+		// all parameter should be parsed
+		if (i == num_of_argu)
+		{
+			if (run_count > 0)
+			{
+				// TODO: do runtest
+				if (svf_para.runtest_run_state != TAP_IDLE)
+				{
+					// RUNTEST can only executed in TAP_IDLE
+					LOG_ERROR("cannot runtest in %s state", svf_tap_state_name[svf_para.runtest_run_state]);
+					return ERROR_FAIL;
+				}
+				jtag_add_runtest(run_count, svf_para.runtest_end_state);
+			}
+		}
+		else
+		{
+			LOG_ERROR("fail to parse parameter of RUNTEST, %d out of %d is parsed", i, num_of_argu);
+			return ERROR_FAIL;
+		}
+		break;
+	case STATE:
+		// STATE [pathstate1 [pathstate2 ...[pathstaten]]] stable_state
+		if (num_of_argu < 2)
+		{
+			LOG_ERROR("invalid parameter of %s", argus[0]);
+			return ERROR_FAIL;
+		}
+		if (num_of_argu > 2)
+		{
+			// STATE pathstate1 ... stable_state
+			path = (tap_state_t *)malloc((num_of_argu - 1) * sizeof(tap_state_t));
+			if (NULL == path)
+			{
+				LOG_ERROR("not enough memory");
+				return ERROR_FAIL;
+			}
+			for (i = 1; i < num_of_argu; i++)
+			{
+				path[i - 1] = svf_find_string_in_array(argus[i], (char **)svf_tap_state_name, dimof(svf_tap_state_name));
+				if (!svf_tap_state_is_valid(path[i - 1]))
+				{
+					LOG_ERROR("%s is not valid state", svf_tap_state_name[path[i - 1]]);
+					return ERROR_FAIL;
+				}
+				if (TAP_RESET == path[i - 1])
+				{
+					LOG_ERROR("TAP_RESET is not allowed in pathmove");
+					return ERROR_FAIL;
+				}
+			}
+			if (svf_tap_state_is_stable(path[num_of_argu - 1]))
+			{
+				// last state MUST be stable state
+				// TODO: call path_move
+				jtag_add_pathmove(num_of_argu - 1, path);
+				LOG_DEBUG("\tmove to %s by path_move", svf_tap_state_name[path[num_of_argu - 1]]);
+			}
+			else
+			{
+				LOG_ERROR("%s is not valid state", svf_tap_state_name[path[num_of_argu - 1]]);
+				return ERROR_FAIL;
+			}
+			if (NULL != path)
+			{
+				free(path);
+				path = NULL;
+			}
+		}
+		else
+		{
+			// STATE stable_state
+			state = svf_find_string_in_array(argus[1], (char **)svf_tap_state_name, dimof(svf_tap_state_name));
+			if (svf_tap_state_is_stable(state))
+			{
+				// TODO: move to state
+				last_cmd = jtag_get_last_command_p();
+				*last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
+				last_comand_pointer = &((*last_cmd)->next);
+				(*last_cmd)->next = NULL;
+				(*last_cmd)->type = JTAG_STATEMOVE;
+				(*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
+				(*last_cmd)->cmd.statemove->end_state = state;
+
+				LOG_DEBUG("\tmove to %s by state_move", svf_tap_state_name[state]);
+			}
+			else
+			{
+				LOG_ERROR("%s is not valid state", svf_tap_state_name[state]);
+				return ERROR_FAIL;
+			}
+		}
+		break;
+	case TRST:
+		// TRST trst_mode
+		if (num_of_argu != 2)
+		{
+			LOG_ERROR("invalid parameter of %s", argus[0]);
+			return ERROR_FAIL;
+		}
+		if (svf_para.trst_mode != TRST_ABSENT)
+		{
+			i_tmp = svf_find_string_in_array(argus[1], (char **)svf_trst_mode_name, dimof(svf_trst_mode_name));
+			switch (i_tmp)
+			{
+			case TRST_ON:
+				jtag_add_reset(1, 0);
+				break;
+			case TRST_OFF:
+				jtag_add_reset(1, 1);
+				break;
+			case TRST_Z:
+				break;
+			case TRST_ABSENT:
+				break;
+			default:
+				LOG_ERROR("unknown TRST mode: %s", argus[1]);
+				return ERROR_FAIL;
+			}
+			svf_para.trst_mode = i_tmp;
+			LOG_DEBUG("\ttrst_mode = %s", svf_trst_mode_name[svf_para.trst_mode]);
+		}
+		else
+		{
+			LOG_ERROR("can not accpet TRST command if trst_mode is ABSENT");
+			return ERROR_FAIL;
+		}
+		break;
+	default:
+		LOG_ERROR("invalid svf command: %s", argus[0]);
+		return ERROR_FAIL;
+		break;
+	}
+
+	if (debug_level >= LOG_LVL_DEBUG)
+	{
+		// for convenient debugging, execute tap if possible
+		if ((svf_buffer_index > 0) && \
+			(((command != STATE) && (command != RUNTEST)) || \
+			((command == STATE) && (num_of_argu == 2))))
+		{
+			// there is data to be executed
+			if (ERROR_OK != jtag_execute_queue())
+			{
+				return ERROR_FAIL;
+			}
+			// output debug info
+			if ((SIR == command) || (SDR == command))
+			{
+				LOG_DEBUG("\tTDO read = 0x%X", (*(int*)svf_tdi_buffer) & ((1 << (svf_check_tdo_para[0].bit_len)) - 1));
+			}
+			if (ERROR_OK != svf_check_tdo())
+			{
+				return ERROR_FAIL;
+			}
+
+			svf_buffer_index = 0;
+		}
+	}
+	else
+	{
+		// for fast executing, execute tap if necessary
+		// half of the buffer is for the next command
+		if (((svf_buffer_index >= SVF_MAX_BUFFER_SIZE_TO_COMMIT) || (svf_check_tdo_para_index >= SVF_CHECK_TDO_PARA_SIZE / 2)) && \
+			(((command != STATE) && (command != RUNTEST)) || \
+			((command == STATE) && (num_of_argu == 2))))
+		{
+			if (ERROR_OK != jtag_execute_queue())
+			{
+				return ERROR_FAIL;
+			}
+			else if (ERROR_OK != svf_check_tdo())
+			{
+				return ERROR_FAIL;
+			}
+
+			svf_buffer_index = 0;
+		}
+	}
+
+	return ERROR_OK;
+}