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mips32, add generic scan 32 function 

Will be used later, allow queuing all needed scans in a pracc
access. This makes faster execution with ftdi based adapters
working in sync with pracc.
Added now because the overall code is shorter.

Change-Id: Ib32b89307b75785f88870db8d7c9255dc5bbd426
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/4005
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
This commit is contained in:
Salvador Arroyo 2017-02-20 23:05:38 +01:00 committed by Freddie Chopin
parent 832f5974f2
commit d81fc78d9b
1 changed files with 19 additions and 29 deletions
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48
src/target/mips_ejtag.c
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@ -121,52 +121,42 @@ void mips_ejtag_add_scan_96(struct mips_ejtag *ejtag_info, uint32_t ctrl, uint32
keep_alive();
}
int mips_ejtag_drscan_32(struct mips_ejtag *ejtag_info, uint32_t *data)
void mips_ejtag_drscan_32_queued(struct mips_ejtag *ejtag_info, uint32_t data_out, uint8_t *data_in)
{
struct jtag_tap *tap;
tap = ejtag_info->tap;
assert(tap != NULL);
assert(ejtag_info->tap != NULL);
struct jtag_tap *tap = ejtag_info->tap;
struct scan_field field;
uint8_t t[4], r[4];
int retval;
field.num_bits = 32;
field.out_value = t;
buf_set_u32(t, 0, field.num_bits, *data);
field.in_value = r;
uint8_t scan_out[4];
field.out_value = scan_out;
buf_set_u32(scan_out, 0, field.num_bits, data_out);
field.in_value = data_in;
jtag_add_dr_scan(tap, 1, &field, TAP_IDLE);
retval = jtag_execute_queue();
keep_alive();
}
int mips_ejtag_drscan_32(struct mips_ejtag *ejtag_info, uint32_t *data)
{
uint8_t scan_in[4];
mips_ejtag_drscan_32_queued(ejtag_info, *data, scan_in);
int retval = jtag_execute_queue();
if (retval != ERROR_OK) {
LOG_ERROR("register read failed");
return retval;
}
*data = buf_get_u32(field.in_value, 0, 32);
keep_alive();
*data = buf_get_u32(scan_in, 0, 32);
return ERROR_OK;
}
void mips_ejtag_drscan_32_out(struct mips_ejtag *ejtag_info, uint32_t data)
{
uint8_t t[4];
struct jtag_tap *tap;
tap = ejtag_info->tap;
assert(tap != NULL);
struct scan_field field;
field.num_bits = 32;
field.out_value = t;
buf_set_u32(t, 0, field.num_bits, data);
field.in_value = NULL;
jtag_add_dr_scan(tap, 1, &field, TAP_IDLE);
mips_ejtag_drscan_32_queued(ejtag_info, data, NULL);
}
int mips_ejtag_drscan_8(struct mips_ejtag *ejtag_info, uint8_t *data)