[ottool] Apply rom_bootstrap before connecting to lc tap.

Added to read_lc_state to make the call stable when ROM execution is enabled. Signed-off-by: Miguel Osorio <[email protected]>
lowRISC · Dec 22, 2023 · 283143d · 283143d
1 parent a714e2e
commit 283143d
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/sw/host/opentitanlib/src/test_utils/lc.rs b/sw/host/opentitanlib/src/test_utils/lc.rs
@@ -16,10 +16,15 @@ pub fn read_lc_state(
     reset_delay: Duration,
 ) -> Result<DifLcCtrlState> {
     transport.pin_strapping("PINMUX_TAP_LC")?.apply()?;
+
+    // Apply bootstrap pin to be able to connect to JTAG when ROM execution is
+    // enabled.
+    transport.pin_strapping("ROM_BOOTSTRAP")?.apply()?;
     transport.reset_target(reset_delay, true)?;
     let mut jtag = jtag_params.create(transport)?.connect(JtagTap::LcTap)?;
     let raw_lc_state = jtag.read_lc_ctrl_reg(&LcCtrlReg::LcState)?;
     jtag.disconnect()?;
     transport.pin_strapping("PINMUX_TAP_LC")?.remove()?;
+    transport.pin_strapping("ROM_BOOTSTRAP")?.remove()?;
     DifLcCtrlState::from_redundant_encoding(raw_lc_state)
 }