[nrf noup] boards: nordic: nrf54h20: Improve ETM

Ozone wants to configure TPIU on v3.38+, so prevent it from doing that.
Also enable the lowpower mode to improve debugging through resets.

Signed-off-by: Karsten Koenig <[email protected]>

Author: karstenkoenig

boards/nordic/nrf54h20dk/support/nrf54h20_cpuapp.JLinkScript

@@ -155,6 +155,19 @@ int ConfigTargetSettings(void)
 	// Adjust trace sample delay to compensate for timing when using 320MHz
 	JLINK_ExecCommand("TraceSampleAdjust TD = 1000");
 
+	JLINK_ExecCommand("CORESIGHT_SetTPIUBaseAddr = 0xBF043000");
+
+	return 0;
+}
+
+int StartTPIU(void)
+{
+	/* We sort this ourselves in _SetupETMTPIUTrace, don't let JLink touch it */
+	return 0;
+}
+
+int StopTPIU(void)
+{
 	return 0;
 }
 
@@ -169,6 +182,11 @@ int OnTraceStart(void)
 	return 0;
 }
 
+int AfterResetTarget(void)
+{
+	_needCoresightSetup = 1;
+	return 0;
+}
 
 int SetupTarget(void)
 {
@@ -179,3 +197,8 @@ int SetupTarget(void)
 
 	return 0;
 }
+
+int InitEMU(void) {
+	JLINK_ExecCommand("EnableLowPowerHandlingMode");
+	return 0;
+}