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ADSP-21569 Recommended for New Designs
Reaching speeds of up to 1 GHz, the ADSP-2156x processors are members of the SHARC® family of products. The ADSP-2156x processor is based on the SHARC...
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ADSP-21569 on Analog.com

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Secure SSL when Cache is enabled

		
	
				

			

									
					    BernhardM
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on May 1, 2026 
				
			
			
		

		
		                     
				
        		

		    
		    		    

		      		            		        
Category: Software

    		        		            		    
Product Number:  ADSP-21569  

    		        		        		        
Software Version: 3.0.3

    		    		    

		    		    
		    			

			    
Hi,


if using SecureBoot_OpenPart with cache enabled, adi_rom_Boot() failes.


If running without cache it succeeds.


Is there an example for a Secure Second Stage Loader with cache enabled?


Regards


Bernhard

			

			
									
		                                 
Thread Notes  

                

        
                                        
                        

    

                                            
                 ADSP-21569
                
                                                    
                 3.0.3
                
                                                    
                 software
                
                                                    
                 processors and dsp
                
                                                    
                 Processors and Microcontrollers
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			


				
	









	
    
	

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                on Apr 29, 2026 5:00 AM
            
            
						
			            		
    
		
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    Hi 
    

    it is running if loading the keys locally but not if using the keys stored in otp.
    

    Regards
    

    Bernhard
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on May 1, 2026 2:28 AM
            
            
												
						in reply to BernhardM
					
										
			            		
    
		
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    Hi,

    Regarding "Is there an example for a Secure Second Stage Loader with cache enabled?
    >>> There is currently no example available for a Secure Second Stage Loader with cache enabled.

    By default, cache must be disabled for the SSL booting. Please ensure that L1 and L2 caches are disabled and flushed (if applicable) before calling the boot API and reset the BTB (Branch Target Buffer). If caches remain enabled, the core may read stale data from a previously loaded application during startup, even if the content is booted via DMA.

    Regards,
    Nandini C
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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