Prefer tty0 console

nixos/sd-image-aarch64.nix

@@ -19,9 +19,13 @@ in
   boot.kernelParams = [
     "cma=32M"
     #"console=ttyS0,115200n8" "console=ttyAMA0,115200n8" "console=tty0"
-    "console=tty0"
+
     "console=ttyS2,1500000n8"
     "earlycon=uart8250,mmio32,0xff1a0000" "earlyprintk"
+
+    # The last console parameter will be where the boot process will print
+    # its messages. Comment or move abot ttyS2 for better serial debugging.
+    "console=tty0"
   ];
 
   services.mingetty.serialSpeed = [ 1500000 115200 57600 38400 9600 ];