diff --git a/opensbi-timer-debug.patch b/opensbi-timer-debug.patch
index 33471af..0f4b635 100644
--- a/opensbi-timer-debug.patch
+++ b/opensbi-timer-debug.patch
@@ -34,14 +34,14 @@ index 7b618de..65e42b0 100644
  
  void sbi_timer_exit(struct sbi_scratch *scratch)
 diff --git a/lib/sbi/sbi_trap.c b/lib/sbi/sbi_trap.c
-index b4f3a17..742eea6 100644
+index b4f3a17..cde2073 100644
 --- a/lib/sbi/sbi_trap.c
 +++ b/lib/sbi/sbi_trap.c
 @@ -283,6 +283,7 @@ static int sbi_trap_aia_irq(void)
   */
  struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx)
  {
-+	sbi_printf("!");
++	sbi_printf("<");
  	int rc = SBI_ENOTSUPP;
  	const char *msg = "trap handler failed";
  	struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
@@ -49,35 +49,59 @@ index b4f3a17..742eea6 100644
  	sbi_trap_set_context(scratch, tcntx);
  
  	if (mcause & MCAUSE_IRQ_MASK) {
-+		sbi_printf("OpenSBI: local interrupt");
++		sbi_printf("i");
  		if (sbi_hart_has_extension(sbi_scratch_thishart_ptr(),
  					   SBI_HART_EXT_SMAIA))
  			rc = sbi_trap_aia_irq();
-@@ -306,15 +308,18 @@ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx)
+@@ -306,35 +308,42 @@ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx)
  
  	switch (mcause) {
  	case CAUSE_ILLEGAL_INSTRUCTION:
-+		sbi_printf("OpenSBI: illegal instruction");
++		sbi_printf("I");
  		rc  = sbi_illegal_insn_handler(tcntx);
  		msg = "illegal instruction handler failed";
  		break;
  	case CAUSE_MISALIGNED_LOAD:
-+		sbi_printf("OpenSBI: misaligned load");
++		sbi_printf("L");
  		sbi_pmu_ctr_incr_fw(SBI_PMU_FW_MISALIGNED_LOAD);
  		rc  = sbi_misaligned_load_handler(tcntx);
  		msg = "misaligned load handler failed";
  		break;
  	case CAUSE_MISALIGNED_STORE:
-+		sbi_printf("OpenSBI: misaligned store");
++		sbi_printf("S");
  		sbi_pmu_ctr_incr_fw(SBI_PMU_FW_MISALIGNED_STORE);
  		rc  = sbi_misaligned_store_handler(tcntx);
  		msg = "misaligned store handler failed";
-@@ -344,6 +349,8 @@ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx)
+ 		break;
+ 	case CAUSE_SUPERVISOR_ECALL:
+ 	case CAUSE_MACHINE_ECALL:
++		sbi_printf("E");
+ 		rc  = sbi_ecall_handler(tcntx);
+ 		msg = "ecall handler failed";
+ 		break;
+ 	case CAUSE_LOAD_ACCESS:
++		sbi_printf("l");
+ 		sbi_pmu_ctr_incr_fw(SBI_PMU_FW_ACCESS_LOAD);
+ 		rc  = sbi_load_access_handler(tcntx);
+ 		msg = "load fault handler failed";
+ 		break;
+ 	case CAUSE_STORE_ACCESS:
++		sbi_printf("s");
+ 		sbi_pmu_ctr_incr_fw(SBI_PMU_FW_ACCESS_STORE);
+ 		rc  = sbi_store_access_handler(tcntx);
+ 		msg = "store fault handler failed";
+ 		break;
+ 	default:
++		sbi_printf("R");
+ 		/* If the trap came from S or U mode, redirect it there */
+ 		msg = "trap redirect failed";
+ 		rc  = sbi_trap_redirect(regs, trap);
+@@ -344,6 +353,8 @@ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx)
  trap_done:
  	if (rc)
  		sbi_trap_error(msg, rc, tcntx);
 +	else
-+		sbi_printf("$");
++		sbi_printf(">");
  
  	if (((regs->mstatus & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT) != PRV_M)
  		sbi_sse_process_pending_events(regs);