improve power route handler and error handling,

add test sim for bmc power sw

hw/BMC_PW_SW_Sim.asc

@@ -0,0 +1,61 @@
+Version 4
+SHEET 1 1792 680
+WIRE 240 -208 176 -208
+WIRE 448 -208 320 -208
+WIRE 1040 -208 448 -208
+WIRE 448 -64 448 -208
+WIRE 528 -64 496 -64
+WIRE 560 -64 528 -64
+WIRE 1040 -64 1040 -208
+WIRE 496 -48 496 -64
+WIRE 176 0 176 -208
+WIRE 496 16 496 0
+WIRE 560 16 496 16
+WIRE 1152 16 1088 16
+WIRE 1280 16 1232 16
+WIRE 1312 16 1280 16
+WIRE 176 144 176 80
+WIRE 448 144 448 16
+WIRE 448 144 176 144
+WIRE 1040 144 1040 32
+WIRE 1040 144 448 144
+WIRE 176 176 176 144
+WIRE 1312 176 1312 96
+FLAG 176 176 0
+FLAG 448 -208 PW_SW
+FLAG 528 -64 SIG_SW
+FLAG 1280 16 SIG_BMC
+FLAG 1312 176 0
+SYMBOL voltage 176 -16 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V1
+SYMATTR Value 5
+SYMBOL res 336 -224 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R1
+SYMATTR Value 10k
+SYMBOL sw 448 32 R180
+SYMATTR InstName S1
+SYMATTR Value SW1
+SYMBOL voltage 560 -80 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V2
+SYMATTR Value PULSE(0 1 0.1 0 0 0.1 0.5 2)
+SYMBOL voltage 1312 0 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V4
+SYMATTR Value PULSE(0 3.3 0.3 0 0 0.1 0.3 2)
+SYMBOL nmos 1088 -64 M0
+SYMATTR InstName M1
+SYMATTR Value Si7336ADP
+SYMBOL res 1248 0 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R2
+SYMATTR Value 1k
+TEXT 472 -120 Left 2 !.model SW1 sw(Vh=0 Vt=0.5)
+TEXT 176 -312 Left 2 !.tran 1