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Author: Michael Bruck <mbruck@digenius.de> 

- jtag.c: consolidate output scan field initialization in scan functions
    - jtag.c: add cmd_queue_scan_field_clone() to handle 1:1 field copies
    - jtag.c: fix bug where only the first output field in a dr scan has its tap field set



git-svn-id: svn://svn.berlios.de/openocd/trunk@1864 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
kc8apf 2009-05-21 04:45:57 +00:00
parent 2783a940e2
commit d7dccfbf82
1 changed files with 28 additions and 27 deletions
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55
src/jtag/jtag.c
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@ -531,6 +531,20 @@ void cmd_queue_free(void)
cmd_queue_pages = NULL;
}
/**
* Copy a scan_field_t for insertion into the queue.
*
* This allocates a new copy of out_value using cmd_queue_alloc.
*/
static void cmd_queue_scan_field_clone(scan_field_t * dst, const scan_field_t * src)
{
dst->tap = src->tap;
dst->num_bits = src->num_bits;
dst->out_value = buf_cpy(src->out_value, cmd_queue_alloc(CEIL(src->num_bits, 8)), src->num_bits);
dst->in_value = src->in_value;
}
static void jtag_prelude1(void)
{
if (jtag_trst == 1)
@ -633,9 +647,6 @@ int MINIDRIVER(interface_jtag_add_ir_scan)(int in_num_fields, const scan_field_t
assert(nth_tap < num_taps);
size_t scan_size = tap->ir_length;
scan->fields[nth_tap].tap = tap;
scan->fields[nth_tap].num_bits = scan_size;
scan->fields[nth_tap].in_value = NULL; /* do not collect input for tap's in bypass */
/* search the list */
for (int j = 0; j < in_num_fields; j++)
@ -643,10 +654,11 @@ int MINIDRIVER(interface_jtag_add_ir_scan)(int in_num_fields, const scan_field_t
if (tap == in_fields[j].tap)
{
found = 1;
scan->fields[nth_tap].in_value = in_fields[j].in_value;
scan->fields[nth_tap].out_value = buf_cpy(in_fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
tap->bypass = 0;
cmd_queue_scan_field_clone(scan->fields + nth_tap, in_fields + j);
break;
}
}
@ -654,8 +666,12 @@ int MINIDRIVER(interface_jtag_add_ir_scan)(int in_num_fields, const scan_field_t
if (!found)
{
/* if a tap isn't listed, set it to BYPASS */
scan->fields[nth_tap].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
tap->bypass = 1;
scan->fields[nth_tap].tap = tap;
scan->fields[nth_tap].num_bits = scan_size;
scan->fields[nth_tap].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
scan->fields[nth_tap].in_value = NULL; /* do not collect input for tap's in bypass */
}
/* update device information */
@ -707,14 +723,7 @@ int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int in_num_fields, const scan_f
scan->end_state = state;
for (int i = 0; i < in_num_fields; i++)
{
int num_bits = in_fields[i].num_bits;
int num_bytes = CEIL(in_fields[i].num_bits, 8);
scan->fields[i].tap = in_fields[i].tap;
scan->fields[i].num_bits = num_bits;
scan->fields[i].out_value = buf_cpy(in_fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
scan->fields[i].in_value = in_fields[i].in_value;
}
cmd_queue_scan_field_clone(out_fields + i, in_fields + i);
return ERROR_OK;
}
@ -847,17 +856,15 @@ int MINIDRIVER(interface_jtag_add_dr_scan)(int in_num_fields, const scan_field_t
for (jtag_tap_t * tap = jtag_NextEnabledTap(NULL); tap != NULL; tap = jtag_NextEnabledTap(tap))
{
int found = 0;
scan->fields[field_count].tap = tap;
for (j = 0; j < in_num_fields; j++)
{
if (tap == in_fields[j].tap)
{
found = 1;
size_t scan_size = in_fields[j].num_bits;
scan->fields[field_count].num_bits = scan_size;
scan->fields[field_count].out_value = buf_cpy(in_fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
scan->fields[field_count].in_value = in_fields[j].in_value;
cmd_queue_scan_field_clone(scan->fields + field_count, in_fields + j);
field_count++;
}
}
@ -872,6 +879,7 @@ int MINIDRIVER(interface_jtag_add_dr_scan)(int in_num_fields, const scan_field_t
}
#endif
/* program the scan field to 1 bit length, and ignore it's value */
scan->fields[field_count].tap = tap;
scan->fields[field_count].num_bits = 1;
scan->fields[field_count].out_value = NULL;
scan->fields[field_count].in_value = NULL;
@ -1027,14 +1035,7 @@ int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int in_num_fields, const scan_f
scan->end_state = state;
for (int i = 0; i < in_num_fields; i++)
{
int num_bits = in_fields[i].num_bits;
int num_bytes = CEIL(in_fields[i].num_bits, 8);
scan->fields[i].tap = in_fields[i].tap;
scan->fields[i].num_bits = num_bits;
scan->fields[i].out_value = buf_cpy(in_fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
scan->fields[i].in_value = in_fields[i].in_value;
}
cmd_queue_scan_field_clone(out_fields + i, in_fields + i);
return ERROR_OK;
}