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jtag_scan: Cleaned up and reworked jtag_dev_write_ir()

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dragonmux 2022-07-27 11:35:13 +01:00 committed by Piotr Esden-Tempski
parent 14dafdbf92
commit 2eb19d4eb7
1 changed files with 10 additions and 8 deletions
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18
src/target/jtag_scan.c
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@ -219,7 +219,7 @@ uint32_t jtag_scan(const uint8_t *irlens)
for (size_t device = 0; device < jtag_dev_count; device++) {
for (size_t descr = 0; dev_descr[descr].idcode; descr++) {
if ((jtag_devs[device].jd_idcode & dev_descr[descr].idmask) == dev_descr[descr].idcode) {
jtag_devs[device].current_ir = -1;
jtag_devs[device].current_ir = UINT32_MAX;
/* Save description in table */
jtag_devs[device].jd_descr = dev_descr[descr].descr;
/* Call handler to initialise/probe device further */
@ -233,18 +233,20 @@ uint32_t jtag_scan(const uint8_t *irlens)
return jtag_dev_count;
}
void jtag_dev_write_ir(jtag_proc_t *jp, uint8_t jd_index, uint32_t ir)
void jtag_dev_write_ir(jtag_proc_t *jp, const uint8_t jd_index, const uint32_t ir)
{
jtag_dev_t *d = &jtag_devs[jd_index];
if(ir == d->current_ir) return;
for(size_t i = 0; i < jtag_dev_count; i++)
jtag_devs[i].current_ir = -1;
if (ir == d->current_ir)
return;
for (size_t device = 0; device < jtag_dev_count; device++)
jtag_devs[device].current_ir = -1;
d->current_ir = ir;
jtagtap_shift_ir();
jp->jtagtap_tdi_seq(0, ones, d->ir_prescan);
jp->jtagtap_tdi_seq(d->ir_postscan?0:1, (void*)&ir, d->ir_len);
jp->jtagtap_tdi_seq(1, ones, d->ir_postscan);
jp->jtagtap_tdi_seq(false, ones, d->ir_prescan);
jp->jtagtap_tdi_seq(!d->ir_postscan, (const uint8_t *)&ir, d->ir_len);
jp->jtagtap_tdi_seq(true, ones, d->ir_postscan);
jtagtap_return_idle(1);
}