implements halt using WFI if hartid!=0 and multicore

2025-12-14 17:12:42 +01:00
parent be32d2467c
commit 925f08e0b9
2 changed files with 8 additions and 2 deletions
--- a/env/start.S
+++ b/env/start.S
@@ -30,11 +30,14 @@ _start:
 2:
    la t0, trap_entry
    csrw mtvec, t0
-#ifdef HARTX_WAIT4WFI
+#if defined(NUM_HARTS) && NUM_HARTS>1
 	/* block other cores until hart 0 has finished initialization */
 	csrr  t0, mhartid 
 	beqz t0, hart0_init
+	/* enable MSI locally */
+	csrwi mie, 0x8 
 	wfi
+	csrw mie, zero
 	j hartx_start
 hart0_init:
 #endif