hw: Add ebreak to boot ROM on return

pulp-platform · Oct 23, 2024 · ef6dea6 · ef6dea6
1 parent 2928adb
commit ef6dea6
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diff --git a/hw/bootrom/cheshire_bootrom.S b/hw/bootrom/cheshire_bootrom.S
@@ -119,10 +119,11 @@ _boot:
 // If main returns, we end up here
 .global _exit
 _exit:
-    // Save the return value to scratch register 2 and wait forever
+    // Save the return value to scratch register 2, try `ebreak`, then wait forever
     slli a0, a0, 1
     ori  a0, a0, 1
     la t0, __base_regs
     sw a0, 8(t0)     // regs.SCRATCH[2]
+    ebreak
 1:  wfi
     j 1b