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openocd/src/xsvf/xsvf.c

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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* Copyright (C) 2008 Peter Hettkamp *
* peter.hettkamp@htp-tel.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 "xsvf.h"
#include "jtag.h"
#include "command.h"
#include "log.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>
#define XSTATE_MAX_PATH (12)
int handle_xsvf_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int xsvf_fd = 0;
u8 *dr_out_buf; /* from host to device (TDI) */
u8 *dr_in_buf; /* from device to host (TDO) */
u8 *dr_in_mask;
int xsdrsize = 0;
int xruntest = 0; /* number of TCK cycles / microseconds */
int xrepeat = 0x20; /* number of XC9500 retries */
int xendir = 0;
int xenddr = 0;
enum tap_state xsvf_to_tap[] =
{
TAP_TLR, TAP_RTI,
TAP_SDS, TAP_CD, TAP_SD, TAP_E1D, TAP_PD, TAP_E2D, TAP_UD,
TAP_SIS, TAP_CI, TAP_SI, TAP_E1I, TAP_PI, TAP_E2I, TAP_UI,
};
int tap_to_xsvf[] =
{
0x0, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x1, 0x9, 0xa, 0xb, 0xc, 0xe, 0xf
};
/* xsvf has it's own definition of a statemove. This needs
* to be handled according to the specs, which has nothing
* to do with the JTAG spec or OpenOCD as such.
*
* Implemented via jtag_add_pathmove().
*/
void xsvf_add_statemove(enum tap_state state)
{
enum tap_state moves[7]; /* max # of transitions */
int i;
enum tap_state curstate = cmd_queue_cur_state;
u8 move = TAP_MOVE(cmd_queue_cur_state, state);
if ((state != TAP_TLR) && (state == cmd_queue_cur_state))
return;
if(state==TAP_TLR)
{
jtag_add_tlr();
return;
}
for (i=0; i<7; i++)
{
int j = (move >> i) & 1;
if (j)
{
curstate = tap_transitions[curstate].high;
} else
{
curstate = tap_transitions[curstate].low;
}
moves[i] = curstate;
}
jtag_add_pathmove(7, moves);
}
int xsvf_register_commands(struct command_context_s *cmd_ctx)
{
register_command(cmd_ctx, NULL, "xsvf", handle_xsvf_command,
COMMAND_EXEC, "run xsvf <file>");
return ERROR_OK;
}
int xsvf_read_buffer(int num_bits, int fd, u8* buf)
{
int num_bytes;
for (num_bytes = (num_bits + 7) / 8; num_bytes > 0; num_bytes--)
{
if (read(fd, buf + num_bytes - 1, 1) < 0)
return ERROR_XSVF_EOF;
}
return ERROR_OK;
}
int xsvf_read_xstates(int fd, enum tap_state *path, int max_path, int *path_len)
{
char c;
unsigned char uc;
while ((read(fd, &c, 1) > 0) && (c == 0x12))
{
if (*path_len > max_path)
{
LOG_WARNING("XSTATE path longer than max_path");
break;
}
if (read(fd, &uc, 1) < 0)
{
return ERROR_XSVF_EOF;
}
path[(*path_len)++] = xsvf_to_tap[uc];
}
lseek(fd, -1, SEEK_CUR);
return ERROR_OK;
}
int handle_xsvf_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
char c;
u8 buf4[4], buf2[2];
unsigned char uc, uc2;
unsigned int ui;
unsigned short us;
int do_abort = 0;
int unsupported = 0;
int tdo_mismatch = 0;
int runtest_requires_tck = 0;
jtag_tap_t *tap = NULL;
/* use NULL to indicate a "plain" xsvf file which accounts for
additional devices in the scan chain, otherwise the device
that should be affected */
if (argc < 2)
{
command_print(cmd_ctx, "usage: xsvf <device#|plain> <file> <variant>");
return ERROR_OK;
}
if (strcmp(args[0], "plain") != 0)
{
tap = jtag_TapByString( args[0] );
if( !tap ){
command_print( cmd_ctx, "Tap: %s unknown", args[0] );
return ERROR_OK;
}
}
if ((xsvf_fd = open(args[1], O_RDONLY)) < 0)
{
command_print(cmd_ctx, "file %s not found", args[0]);
return ERROR_OK;
}
if ((argc > 2) && (strcmp(args[2], "virt2") == 0))
{
runtest_requires_tck = 1;
}
while (read(xsvf_fd, &c, 1) > 0)
{
switch (c)
{
case 0x00: /* XCOMPLETE */
LOG_DEBUG("XCOMPLETE");
if (jtag_execute_queue() != ERROR_OK)
{
tdo_mismatch = 1;
break;
}
break;
case 0x01: /* XTDOMASK */
LOG_DEBUG("XTDOMASK");
if (dr_in_mask && (xsvf_read_buffer(xsdrsize, xsvf_fd, dr_in_mask) != ERROR_OK))
do_abort = 1;
break;
case 0x02: /* XSIR */
LOG_DEBUG("XSIR");
if (read(xsvf_fd, &c, 1) < 0)
do_abort = 1;
else
{
u8 *ir_buf = malloc((c + 7) / 8);
if (xsvf_read_buffer(c, xsvf_fd, ir_buf) != ERROR_OK)
do_abort = 1;
else
{
scan_field_t field;
field.tap = tap;
field.num_bits = c;
field.out_value = ir_buf;
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;
if (tap == NULL)
jtag_add_plain_ir_scan(1, &field, TAP_PI);
else
jtag_add_ir_scan(1, &field, TAP_PI);
if (jtag_execute_queue() != ERROR_OK)
{
tdo_mismatch = 1;
free(ir_buf);
break;
}
if (xruntest)
{
if (runtest_requires_tck)
jtag_add_runtest(xruntest, xsvf_to_tap[xendir]);
else
{
xsvf_add_statemove(TAP_RTI);
jtag_add_sleep(xruntest);
xsvf_add_statemove(xsvf_to_tap[xendir]);
}
}
else if (xendir != 0xd) /* Pause-IR */
xsvf_add_statemove(xsvf_to_tap[xendir]);
}
free(ir_buf);
}
break;
case 0x03: /* XSDR */
LOG_DEBUG("XSDR");
if (xsvf_read_buffer(xsdrsize, xsvf_fd, dr_out_buf) != ERROR_OK)
do_abort = 1;
else
{
scan_field_t field;
field.tap = tap;
field.num_bits = xsdrsize;
field.out_value = dr_out_buf;
field.out_mask = NULL;
field.in_value = NULL;
jtag_set_check_value(&field, dr_in_buf, dr_in_mask, NULL);
if (tap == NULL)
jtag_add_plain_dr_scan(1, &field, TAP_PD);
else
jtag_add_dr_scan(1, &field, TAP_PD);
if (jtag_execute_queue() != ERROR_OK)
{
tdo_mismatch = 1;
break;
}
if (xruntest)
{
if (runtest_requires_tck)
jtag_add_runtest(xruntest, xsvf_to_tap[xenddr]);
else
{
xsvf_add_statemove(TAP_RTI);
jtag_add_sleep(xruntest);
xsvf_add_statemove(xsvf_to_tap[xenddr]);
}
}
else if (xendir != 0x6) /* Pause-DR */
xsvf_add_statemove(xsvf_to_tap[xenddr]);
}
break;
case 0x04: /* XRUNTEST */
LOG_DEBUG("XRUNTEST");
if (read(xsvf_fd, buf4, 4) < 0)
do_abort = 1;
else
{
xruntest = be_to_h_u32(buf4);
}
break;
case 0x07: /* XREPEAT */
LOG_DEBUG("XREPEAT");
if (read(xsvf_fd, &c, 1) < 0)
do_abort = 1;
else
{
xrepeat = c;
}
break;
case 0x08: /* XSDRSIZE */
LOG_DEBUG("XSDRSIZE");
if (read(xsvf_fd, buf4, 4) < 0)
do_abort = 1;
else
{
xsdrsize = be_to_h_u32(buf4);
free(dr_out_buf);
free(dr_in_buf);
free(dr_in_mask);
dr_out_buf = malloc((xsdrsize + 7) / 8);
dr_in_buf = malloc((xsdrsize + 7) / 8);
dr_in_mask = malloc((xsdrsize + 7) / 8);
}
break;
case 0x09: /* XSDRTDO */
LOG_DEBUG("XSDRTDO");
if (xsvf_read_buffer(xsdrsize, xsvf_fd, dr_out_buf) != ERROR_OK)
do_abort = 1;
else
{
if (xsvf_read_buffer(xsdrsize, xsvf_fd, dr_in_buf) != ERROR_OK)
do_abort = 1;
else
{
scan_field_t field;
field.tap = tap;
field.num_bits = xsdrsize;
field.out_value = dr_out_buf;
field.out_mask = NULL;
field.in_value = NULL;
jtag_set_check_value(&field, dr_in_buf, dr_in_mask, NULL);
if (tap == NULL)
jtag_add_plain_dr_scan(1, &field, TAP_PD);
else
jtag_add_dr_scan(1, &field, TAP_PD);
if (jtag_execute_queue() != ERROR_OK)
{
tdo_mismatch = 1;
break;
}
if (xruntest)
{
if (runtest_requires_tck)
jtag_add_runtest(xruntest, xsvf_to_tap[xenddr]);
else
{
xsvf_add_statemove(TAP_RTI);
jtag_add_sleep(xruntest);
xsvf_add_statemove(xsvf_to_tap[xenddr]);
}
}
else if (xendir != 0x6) /* Pause-DR */
xsvf_add_statemove(xsvf_to_tap[xenddr]);
}
}
break;
case 0x0a: /* XSETDRMASKS */
LOG_ERROR("unsupported XSETSDRMASKS\n");
unsupported = 1;
break;
case 0x0b: /* XSDRINC */
LOG_ERROR("unsupported XSDRINC\n");
unsupported = 1;
break;
case 0x0c: /* XSDRB */
unsupported = 1;
break;
case 0x0d: /* XSDRC */
unsupported = 1;
break;
case 0x0e: /* XSDRE */
unsupported = 1;
break;
case 0x0f: /* XSDRTDOB */
unsupported = 1;
break;
case 0x10: /* XSDRTDOB */
unsupported = 1;
break;
case 0x11: /* XSDRTDOB */
unsupported = 1;
break;
case 0x12: /* XSTATE */
LOG_DEBUG("XSTATE");
if (read(xsvf_fd, &uc, 1) < 0)
do_abort = 1;
else
{
enum tap_state *path = calloc(XSTATE_MAX_PATH, 4);
int path_len = 1;
path[0] = xsvf_to_tap[uc];
if (xsvf_read_xstates(xsvf_fd, path, XSTATE_MAX_PATH, &path_len) != ERROR_OK)
do_abort = 1;
else
{
int i,lasti;
/* here the trick is that jtag_add_pathmove() must end in a stable
state, so we must only invoke jtag_add_tlr() when we absolutely
have to
*/
for(i=0,lasti=0;i<path_len;i++)
{
if(path[i]==TAP_TLR)
{
if(i>lasti)
{
jtag_add_pathmove(i-lasti,path+lasti);
}
lasti=i+1;
jtag_add_tlr();
}
}
if(i>=lasti)
{
jtag_add_pathmove(i-lasti, path+lasti);
}
}
free(path);
}
break;
case 0x13: /* XENDIR */
LOG_DEBUG("XENDIR");
if (read(xsvf_fd, &c, 1) < 0)
do_abort = 1;
else
{
if (c == 0)
xendir = 1;
else if (c == 1)
xendir = 0xd;
else
{
LOG_ERROR("unknown XENDIR endstate");
unsupported = 1;
}
}
break;
case 0x14: /* XENDDR */
LOG_DEBUG("XENDDR");
if (read(xsvf_fd, &c, 1) < 0)
do_abort = 1;
else
{
if (c == 0)
xenddr = 1;
else if (c == 1)
xenddr = 0x6;
else
{
LOG_ERROR("unknown XENDDR endstate");
unsupported = 1;
}
}
break;
case 0x15: /* XSIR2 */
LOG_DEBUG("XSIR2");
if (read(xsvf_fd, buf2, 2) < 0)
do_abort = 1;
else
{
u8 *ir_buf;
us = be_to_h_u16(buf2);
ir_buf = malloc((us + 7) / 8);
if (xsvf_read_buffer(us, xsvf_fd, ir_buf) != ERROR_OK)
do_abort = 1;
else
{
scan_field_t field;
field.tap = tap;
field.num_bits = us;
field.out_value = ir_buf;
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;
if (tap == NULL)
jtag_add_plain_ir_scan(1, &field, xsvf_to_tap[xendir]);
else
jtag_add_ir_scan(1, &field, xsvf_to_tap[xendir]);
}
free(ir_buf);
}
break;
case 0x16: /* XCOMMENT */
do
{
if (read(xsvf_fd, &c, 1) < 0)
{
do_abort = 1;
break;
}
} while (c != 0);
break;
case 0x17: /* XWAIT */
LOG_DEBUG("XWAIT");
if ((read(xsvf_fd, &uc, 1) < 0) || (read(xsvf_fd, &uc2, 1) < 0) || (read(xsvf_fd, buf4, 4) < 0))
do_abort = 1;
else
{
xsvf_add_statemove(xsvf_to_tap[uc]);
ui = be_to_h_u32(buf4);
jtag_add_sleep(ui);
xsvf_add_statemove(xsvf_to_tap[uc2]);
}
break;
default:
LOG_ERROR("unknown xsvf command (0x%2.2x)\n", c);
unsupported = 1;
}
if (do_abort || unsupported || tdo_mismatch)
break;
}
if (tdo_mismatch)
{
command_print(cmd_ctx, "TDO mismatch, aborting");
return ERROR_OK;
}
if (unsupported)
{
command_print(cmd_ctx, "unsupported xsvf command encountered, aborting");
return ERROR_OK;
}
if (do_abort)
{
command_print(cmd_ctx, "premature end detected, aborting");
return ERROR_OK;
}
if (dr_out_buf)
free(dr_out_buf);
if (dr_in_buf)
free(dr_in_buf);
if (dr_in_mask)
free(dr_in_mask);
close(xsvf_fd);
command_print(cmd_ctx, "XSVF file programmed successfully");
return ERROR_OK;
}
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