Prevents crashing the kernel on boot if other blobs are prepended before the microkernel update image. Fixes #22674.
		
			
				
	
	
		
			30 lines
		
	
	
		
			517 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			30 lines
		
	
	
		
			517 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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with lib;
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{
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  ###### interface
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  options = {
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    hardware.cpu.amd.updateMicrocode = mkOption {
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      default = false;
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      type = types.bool;
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      description = ''
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        Update the CPU microcode for AMD processors.
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      '';
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    };
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  };
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  ###### implementation
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  config = mkIf config.hardware.cpu.amd.updateMicrocode {
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    # Microcode updates must be the first item prepended in the initrd
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    boot.initrd.prepend = mkOrder 1 [ "${pkgs.microcodeAmd}/amd-ucode.img" ];
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  };
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}
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