Smartphone Flash Tool -runtime Trace Mode-l ◎

| Scenario | Logcat | Dmesg | JTAG Debugger | SP Flash Tool Trace Mode | |----------|--------|-------|---------------|--------------------------| | Kernel panic before init | ❌ No | ❌ Not logged | ✅ Yes | ✅ Yes | | Bootloop in Preloader | ❌ No | ❌ No | ✅ Yes | ✅ Yes | | Real-time power transition analysis | ❌ No | ❌ Too coarse | ✅ Yes | ✅ Yes | | Non-invasive tracing (no breakpoints) | ✅ Yes | ✅ Yes | ❌ Affects timing | ✅ Yes | | Tracing across CPU idle/suspend | ❌ No | ❌ Stops | ❌ Stops | ✅ Yes | | End-user device | ❌ Too slow | ❌ Too slow | ✅ Requires hardware | ✅ Requires engineering boot |

| Parameter | Specification | | :--- | :--- | | | Verbose (Trace), Info, Warning, Error | | Buffer Size | Dynamic (up to 16 MB circular buffer) | | Timestamp Resolution | Microsecond ( us ) | | Trigger Events | Pre-flash handshake, Partition write, Verification, Post-reboot | | Output Format | .txt , .csv , or .binlog | Smartphone Flash Tool -runtime Trace Mode-l

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