first commit

2026-08-25 21:47:54 -04:00
commit c83cd9040d
9 changed files with 2304 additions and 0 deletions
@@ -0,0 +1,28 @@
+#include "regdef.h"
+#include "csrdef.h"
+#include "tools-asm.h"
+#include "start.h"
+        .global cpu_sleep
+cpu_sleep:
+        SAVE_REGS_ALL(REGS_MEM)
+        dbar 0
+	li.w    t1, PMU_BASE
+1:	ld.w    t0, t1,PMU_CommandW
+	andi    t0, t0, 0x1
+	beqz    t0, 1b
+	st.w    t0, t1,PMU_CommandW
+        idle 0
+
+        .global wakeup_reset
+wakeup_reset:
+        la      a0, msg_wakeup
+        bl      outputstring
+        RESTORE_REGS_ALL(REGS_MEM)
+
+        csrwr   t0, CSR_KScratch1
+        /*enable interrupt*/
+        li.w    t0, 0x4
+        csrxchg t0, t0, CSR_CRMD //enter pmu_handler
+
+        csrrd   t0, CSR_KScratch1
+        jirl zero, ra, 0