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Diffstat (limited to 'src/target/arm11_dbgtap.c')
-rw-r--r--src/target/arm11_dbgtap.c25
1 files changed, 10 insertions, 15 deletions
diff --git a/src/target/arm11_dbgtap.c b/src/target/arm11_dbgtap.c
index 554d6e2b..088981f8 100644
--- a/src/target/arm11_dbgtap.c
+++ b/src/target/arm11_dbgtap.c
@@ -48,14 +48,14 @@ static const tap_state_t arm11_move_pi_to_si_via_ci[] =
};
-static int arm11_add_ir_scan_vc(int num_fields, struct scan_field *fields,
+/* REVISIT no error handling here! */
+static void arm11_add_ir_scan_vc(int num_fields, struct scan_field *fields,
tap_state_t state)
{
if (cmd_queue_cur_state == TAP_IRPAUSE)
jtag_add_pathmove(ARRAY_SIZE(arm11_move_pi_to_si_via_ci), arm11_move_pi_to_si_via_ci);
jtag_add_ir_scan(num_fields, fields, state);
- return ERROR_OK;
}
static const tap_state_t arm11_move_pd_to_sd_via_cd[] =
@@ -63,13 +63,14 @@ static const tap_state_t arm11_move_pd_to_sd_via_cd[] =
TAP_DREXIT2, TAP_DRUPDATE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DRSHIFT
};
-int arm11_add_dr_scan_vc(int num_fields, struct scan_field *fields, tap_state_t state)
+/* REVISIT no error handling here! */
+void arm11_add_dr_scan_vc(int num_fields, struct scan_field *fields,
+ tap_state_t state)
{
if (cmd_queue_cur_state == TAP_DRPAUSE)
jtag_add_pathmove(ARRAY_SIZE(arm11_move_pd_to_sd_via_cd), arm11_move_pd_to_sd_via_cd);
jtag_add_dr_scan(num_fields, fields, state);
- return ERROR_OK;
}
@@ -83,7 +84,8 @@ int arm11_add_dr_scan_vc(int num_fields, struct scan_field *fields, tap_state_t
* <em > (data is written when the JTAG queue is executed)</em>
* \param field target data structure that will be initialized
*/
-void arm11_setup_field(struct arm11_common * arm11, int num_bits, void * out_data, void * in_data, struct scan_field * field)
+void arm11_setup_field(struct arm11_common *arm11, int num_bits,
+ void *out_data, void *in_data, struct scan_field *field)
{
field->tap = arm11->arm.target->tap;
field->num_bits = num_bits;
@@ -151,24 +153,17 @@ void arm11_add_IR(struct arm11_common * arm11, uint8_t instr, tap_state_t state)
arm11_add_ir_scan_vc(1, &field, state == ARM11_TAP_DEFAULT ? TAP_IRPAUSE : state);
}
-/** Verify shifted out data from Scan Chain Register (SCREG)
- * Used as parameter to struct scan_field::in_handler in
- * arm11_add_debug_SCAN_N().
- *
- */
+/** Verify data shifted out from Scan Chain Register (SCREG). */
static void arm11_in_handler_SCAN_N(uint8_t *in_value)
{
- /** \todo TODO: clarify why this isnt properly masked in core.c jtag_read_buffer() */
+ /* Don't expect JTAG layer to modify bits we didn't ask it to read */
uint8_t v = *in_value & 0x1F;
if (v != 0x10)
{
- LOG_ERROR("'arm11 target' JTAG communication error SCREG SCAN OUT 0x%02x (expected 0x10)", v);
+ LOG_ERROR("'arm11 target' JTAG error SCREG OUT 0x%02x", v);
jtag_set_error(ERROR_FAIL);
}
-
- if (v != 0x10)
- JTAG_DEBUG("SCREG SCAN OUT 0x%02x", v);
}
/** Select and write to Scan Chain Register (SCREG)