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jtag_add_shift() fn - minidriver work in progress. 

git-svn-id: svn://svn.berlios.de/openocd/trunk@367 b42882b7-edfa-0310-969c-e2dbd0fdcd60
__archive__
oharboe 2008-02-28 09:21:56 +00:00
parent ebbcbd3f29
commit 7cdb05b7d6
2 changed files with 67 additions and 0 deletions
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37
src/jtag/jtag.c
View File

@ -1898,6 +1898,43 @@ int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **a
return ERROR_OK;
}
int MINIDRIVER(interface_jtag_add_shift)(const enum tap_state shift_state, const enum tap_state end_state, int num_bits, u32 value)
{
u8 out_buf[4];
buf_set_u32(out_buf, 0, 32, flip_u32(value, 32));
/* allocate memory for a new list member */
jtag_command_t **last_cmd;
last_cmd = jtag_get_last_command_p();
*last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
last_comand_pointer = &((*last_cmd)->next);
(*last_cmd)->next = NULL;
(*last_cmd)->type = JTAG_SCAN;
/* allocate memory for scan command */
(*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
(*last_cmd)->cmd.scan->ir_scan = (shift_state==TAP_SI);
(*last_cmd)->cmd.scan->num_fields = 1;
(*last_cmd)->cmd.scan->fields = cmd_queue_alloc(1 * sizeof(scan_field_t));
(*last_cmd)->cmd.scan->end_state = end_state;
int num_bytes = CEIL(num_bits, 8);
int i=0;
(*last_cmd)->cmd.scan->fields[i].device = 0; /* not used by any drivers */
(*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
(*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(out_buf, cmd_queue_alloc(num_bytes), num_bits);
(*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
(*last_cmd)->cmd.scan->fields[i].in_value = NULL;
(*last_cmd)->cmd.scan->fields[i].in_check_value = NULL;
(*last_cmd)->cmd.scan->fields[i].in_check_mask = NULL;
(*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
(*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
return ERROR_OK;
}
int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
if (argc == 1)

30
src/jtag/jtag.h
View File

@ -22,6 +22,7 @@
#include "types.h"
#include "binarybuffer.h"
#include "log.h"
#include "command.h"
@ -289,6 +290,9 @@ extern int jtag_add_end_state(enum tap_state endstate);
extern int interface_jtag_add_end_state(enum tap_state endstate);
extern int jtag_add_sleep(u32 us);
extern int interface_jtag_add_sleep(u32 us);
/*
* For software FIFO implementations, the queued commands can be executed
* during this call or earlier. A sw queue might decide to push out
@ -340,4 +344,30 @@ extern int jtag_verify_capture_ir;
#define ERROR_JTAG_DEVICE_ERROR (-107)
/* Here a #define MINIDRIVER() and an inline version of hw fifo interface_jtag_add_shift can be defined */
#ifndef MINIDRIVER
extern int interface_jtag_add_shift(const enum tap_state shift_state, const enum tap_state end_state, int bits, u32 value);
#endif
/* Enter the shift_state and cycle "bits" times out of that state.
*
* So if the end_state!=shift_state, then the transition from shift_state to
* end_state counts as a transition out of shift_state.
*
* Legal shift states TAP_SD and TAP_SI
*
* Legal end state does not include TAP_TLR
*
* Bits are clocked out from value LSB first.
*/
static __inline int jtag_add_shift(const enum tap_state shift_state, const enum tap_state end_state, int bits, u32 value)
{
int retval;
retval=interface_jtag_add_shift(shift_state, end_state, bits, value);
cmd_queue_end_state = end_state;
return retval;
}
#endif /* JTAG_H */