/***************************************************************************
- * Copyright (C) 2013 by Franck Jullien *
+ * Copyright (C) 2013-2014 by Franck Jullien *
* elec4fun@gmail.com *
* *
- * Inspired from adv_jtag_bridge which is: *
+ * Inspired from adv_jtag_bridge which is: *
* Copyright (C) 2008-2010 Nathan Yawn *
* nyawn@opencores.net *
* *
* 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 "or1k_tap.h"
#include "or1k.h"
#include "or1k_du.h"
+#include "jsp_server.h"
#include <target/target.h>
#include <jtag/jtag.h>
+#define JSP_BANNER "\n\r" \
+ "******************************\n\r" \
+ "** JTAG Serial Port **\n\r" \
+ "******************************\n\r" \
+ "\n\r"
+
+#define NO_OPTION 0
+
/* This an option to the adv debug unit.
* If this is defined, status bits will be skipped on burst
* reads and writes to improve download speeds.
*/
#define ADBG_USE_HISPEED 1
+/* This an option to the adv debug unit.
+ * If this is defined, the JTAG Serial Port Server is started.
+ * This option must match the RTL configured option.
+ */
+#define ENABLE_JSP_SERVER 2
+
+/* Define this if you intend to use the JSP in a system with multiple
+ * devices on the JTAG chain
+ */
+#define ENABLE_JSP_MULTI 4
+
/* Definitions for the top-level debug unit. This really just consists
* of a single register, used to select the active debug module ("chain").
*/
if (or1k_du_adv.options & ADBG_USE_HISPEED)
LOG_INFO("adv debug unit is configured with option ADBG_USE_HISPEED");
+ if (or1k_du_adv.options & ENABLE_JSP_SERVER) {
+ if (or1k_du_adv.options & ENABLE_JSP_MULTI)
+ LOG_INFO("adv debug unit is configured with option ENABLE_JSP_MULTI");
+ LOG_INFO("adv debug unit is configured with option ENABLE_JSP_SERVER");
+ retval = jsp_init(jtag_info, JSP_BANNER);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Couldn't start the JSP server");
+ return retval;
+ }
+ }
+
LOG_DEBUG("Init done");
return ERROR_OK;
return ERROR_OK;
}
+int or1k_adv_jtag_jsp_xfer(struct or1k_jtag *jtag_info,
+ int *out_len, unsigned char *out_buffer,
+ int *in_len, unsigned char *in_buffer)
+{
+ LOG_DEBUG("JSP transfert");
+
+ int retval;
+ if (!jtag_info->or1k_jtag_inited)
+ return ERROR_OK;
+
+ retval = adbg_select_module(jtag_info, DC_JSP);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* return nb char xmit */
+ int xmitsize;
+ if (*out_len > 8)
+ xmitsize = 8;
+ else
+ xmitsize = *out_len;
+
+ uint8_t out_data[10];
+ uint8_t in_data[10];
+ struct scan_field field;
+ int startbit, stopbit, wrapbit;
+
+ memset(out_data, 0, 10);
+
+ if (or1k_du_adv.options & ENABLE_JSP_MULTI) {
+
+ startbit = 1;
+ wrapbit = (xmitsize >> 3) & 0x1;
+ out_data[0] = (xmitsize << 5) | 0x1; /* set the start bit */
+
+ int i;
+ /* don't copy off the end of the input array */
+ for (i = 0; i < xmitsize; i++) {
+ out_data[i + 1] = (out_buffer[i] << 1) | wrapbit;
+ wrapbit = (out_buffer[i] >> 7) & 0x1;
+ }
+
+ if (i < 8)
+ out_data[i + 1] = wrapbit;
+ else
+ out_data[9] = wrapbit;
+
+ /* If the last data bit is a '1', then we need to append a '0' so the top-level module
+ * won't treat the burst as a 'module select' command.
+ */
+ stopbit = !!(out_data[9] & 0x01);
+
+ } else {
+ startbit = 0;
+ /* First byte out has write count in upper nibble */
+ out_data[0] = 0x0 | (xmitsize << 4);
+ if (xmitsize > 0)
+ memcpy(&out_data[1], out_buffer, xmitsize);
+
+ /* If the last data bit is a '1', then we need to append a '0' so the top-level module
+ * won't treat the burst as a 'module select' command.
+ */
+ stopbit = !!(out_data[8] & 0x80);
+ }
+
+ field.num_bits = 72 + startbit + stopbit;
+ field.out_value = out_data;
+ field.in_value = in_data;
+
+ jtag_add_dr_scan(jtag_info->tap, 1, &field, TAP_IDLE);
+
+ retval = jtag_execute_queue();
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* bytes available is in the upper nibble */
+ *in_len = (in_data[0] >> 4) & 0xF;
+ memcpy(in_buffer, &in_data[1], *in_len);
+
+ int bytes_free = in_data[0] & 0x0F;
+ *out_len = (bytes_free < xmitsize) ? bytes_free : xmitsize;
+
+ return ERROR_OK;
+}
+
static struct or1k_du or1k_du_adv = {
.name = "adv",
- .options = ADBG_USE_HISPEED,
+ .options = NO_OPTION,
.or1k_jtag_init = or1k_adv_jtag_init,
.or1k_is_cpu_running = or1k_adv_is_cpu_running,
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