Apparently the ttyS0 console doesn't exist but ttyS1 does: raccoon% sudo stty -F /dev/ttyS0 stty: /dev/ttyS0: Input/output error raccoon% sudo stty -F /dev/ttyS1 speed 9600 baud; line = 0; -brkint -imaxbel The dmesg line agrees: 00:03: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A The console configuration is then moved from base to xeon to allow changing it for the raccoon machine. Reviewed-by: Aleix Boné <abonerib@bsc.es>
		
			
				
	
	
		
			38 lines
		
	
	
		
			1.0 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			38 lines
		
	
	
		
			1.0 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
| { lib, pkgs, ... }:
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| 
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| {
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|   # Use the GRUB 2 boot loader.
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|   boot.loader.grub.enable = true;
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| 
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|   # Enable GRUB2 serial console
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|   boot.loader.grub.extraConfig = ''
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|     serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
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|     terminal_input --append serial
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|     terminal_output --append serial
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|   '';
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| 
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|   boot.kernel.sysctl = {
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|     "kernel.perf_event_paranoid" = lib.mkDefault "-1";
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| 
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|     # Allow ptracing (i.e. attach with GDB) any process of the same user, see:
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|     # https://www.kernel.org/doc/Documentation/security/Yama.txt
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|     "kernel.yama.ptrace_scope" = "0";
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|   };
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| 
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|   boot.kernelPackages = pkgs.linuxPackages_latest;
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| 
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|   #boot.kernelPatches = lib.singleton {
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|   #  name = "osnoise-tracer";
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|   #  patch = null;
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|   #  extraStructuredConfig = with lib.kernel; {
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|   #    OSNOISE_TRACER = yes;
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|   #    HWLAT_TRACER = yes;
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|   #  };
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|   #};
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| 
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|   boot.initrd.availableKernelModules = [ "ahci" "xhci_pci" "ehci_pci" "nvme" "usbhid" "sd_mod" ];
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|   boot.initrd.kernelModules = [ ];
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|   boot.kernelModules = [ "kvm-intel" ];
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|   boot.extraModulePackages = [ ];
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| }
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