* 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 *
* 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. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "arm_jtag.h"
-#include "binarybuffer.h"
-#include "log.h"
-#include "jtag.h"
-
-#include <stdlib.h>
-
#if 0
#define _ARM_JTAG_SCAN_N_CHECK_
#endif
-int arm_jtag_set_instr_error_handler(u8 *in_value, void *priv)
-{
- ERROR("setting the new JTAG instruction failed, debugging is likely to be broken");
-
- return ERROR_OK;
-}
-
-int arm_jtag_set_instr(arm_jtag_t *jtag_info, u32 new_instr, error_handler_t *caller_error_handler)
-{
- 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;
-
-
-
- if (caller_error_handler)
- {
- jtag_set_check_value(&field, NULL, NULL, caller_error_handler);
- }
- else
- {
- error_handler_t error_handler;
- error_handler.error_handler = arm_jtag_set_instr_error_handler;
- error_handler.error_handler_priv = NULL;
- jtag_set_check_value(&field, NULL, NULL, &error_handler);
- }
- jtag_add_ir_scan(1, &field, -1, NULL);
-
-
- 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)
- {
-#ifdef _ARM_JTAG_SCAN_N_CHECK_
- u8 scan_n_check_value = 1 << (jtag_info->scann_size - 1);
-#endif
- 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 = NULL;
-#ifdef _ARM_JTAG_SCAN_N_CHECK_
- jtag_set_check_value(&field, &scan_n_check_value, NULL, NULL, NULL);
-#else
- field.in_handler = NULL;
- field.in_handler_priv = NULL;
-#endif
-
-
- arm_jtag_set_instr(jtag_info, jtag_info->scann_instr, NULL);
- jtag_add_dr_scan(1, &field, -1, NULL);
-
- 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;
+int arm_jtag_set_instr_inner(struct arm_jtag *jtag_info,
+ uint32_t new_instr, void *no_verify_capture, tap_state_t end_state)
+{
+ struct jtag_tap *tap;
+ tap = jtag_info->tap;
+ struct scan_field field;
+ uint8_t t[4];
+
+ field.num_bits = tap->ir_length;
+ field.out_value = t;
+ buf_set_u32(t, 0, field.num_bits, new_instr);
+ field.in_value = NULL;
+
+ if (no_verify_capture == NULL)
+ jtag_add_ir_scan(tap, &field, 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(tap, &field, end_state);
}
-
- 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;
-}
-/* read JTAG buffer into host-endian u32, flipping bit-order */
-int arm_jtag_buf_to_u32_flip(u8 *in_buf, void *priv)
-{
- u32 *dest = priv;
- *dest = flip_u32(le_to_h_u32(in_buf), 32);
return ERROR_OK;
}
-/* read JTAG buffer into little-endian u32, flipping bit-order */
-int arm_jtag_buf_to_le32_flip(u8 *in_buf, void *priv)
+int arm_jtag_scann_inner(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state)
{
- h_u32_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
- return ERROR_OK;
-}
+ int retval = ERROR_OK;
+ uint32_t values[1];
+ int num_bits[1];
-/* read JTAG buffer into little-endian u16, flipping bit-order */
-int arm_jtag_buf_to_le16_flip(u8 *in_buf, void *priv)
-{
- h_u16_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
- return ERROR_OK;
-}
+ values[0] = new_scan_chain;
+ num_bits[0] = jtag_info->scann_size;
-/* read JTAG buffer into big-endian u32, flipping bit-order */
-int arm_jtag_buf_to_be32_flip(u8 *in_buf, void *priv)
-{
- h_u32_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
- return ERROR_OK;
-}
+ retval = arm_jtag_set_instr(jtag_info, jtag_info->scann_instr, NULL, end_state);
+ if (retval != ERROR_OK)
+ return retval;
-/* read JTAG buffer into big-endian u16, flipping bit-order */
-int arm_jtag_buf_to_be16_flip(u8 *in_buf, void *priv)
-{
- h_u16_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
- return ERROR_OK;
-}
+ jtag_add_dr_out(jtag_info->tap,
+ 1,
+ num_bits,
+ values,
+ end_state);
-/* read JTAG buffer into u8, flipping bit-order */
-int arm_jtag_buf_to_8_flip(u8 *in_buf, void *priv)
-{
- u8 *dest = priv;
- *dest = flip_u32(le_to_h_u32(in_buf), 32) & 0xff;
- return ERROR_OK;
-}
+ jtag_info->cur_scan_chain = new_scan_chain;
-/* not-flipping variants */
-/* read JTAG buffer into host-endian u32 */
-int arm_jtag_buf_to_u32(u8 *in_buf, void *priv)
-{
- u32 *dest = priv;
- *dest = le_to_h_u32(in_buf);
- return ERROR_OK;
+ return retval;
}
-/* read JTAG buffer into little-endian u32 */
-int arm_jtag_buf_to_le32(u8 *in_buf, void *priv)
+static int arm_jtag_reset_callback(enum jtag_event event, void *priv)
{
- h_u32_to_le(((u8*)priv), le_to_h_u32(in_buf));
- return ERROR_OK;
-}
+ struct arm_jtag *jtag_info = priv;
-/* read JTAG buffer into little-endian u16 */
-int arm_jtag_buf_to_le16(u8 *in_buf, void *priv)
-{
- h_u16_to_le(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
- return ERROR_OK;
-}
+ if (event == JTAG_TRST_ASSERTED)
+ jtag_info->cur_scan_chain = 0;
-/* read JTAG buffer into big-endian u32 */
-int arm_jtag_buf_to_be32(u8 *in_buf, void *priv)
-{
- h_u32_to_be(((u8*)priv), le_to_h_u32(in_buf));
return ERROR_OK;
}
-/* read JTAG buffer into big-endian u16 */
-int arm_jtag_buf_to_be16(u8 *in_buf, void *priv)
+int arm_jtag_setup_connection(struct arm_jtag *jtag_info)
{
- h_u16_to_be(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
- return ERROR_OK;
-}
+ jtag_info->scann_instr = 0x2;
+ jtag_info->cur_scan_chain = 0;
+ jtag_info->intest_instr = 0xc;
-/* read JTAG buffer into u8 */
-int arm_jtag_buf_to_8(u8 *in_buf, void *priv)
-{
- u8 *dest = priv;
- *dest = le_to_h_u32(in_buf) & 0xff;
- return ERROR_OK;
+ return jtag_register_event_callback(arm_jtag_reset_callback, jtag_info);
}
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