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	This patch adds support for the SHA-256 Secure Hash Algorithm for CPUs that have support for the SHA-256 part of the ARM v8 Crypto Extensions. It greatly improves sha-256 based operations, about 17x faster on iMX8M evk board. ~12ms vs ~208ms for a 20MiB kernel sha-256 verification. asm implementation is a simplified version of the Linux version (from Ard Biesheuvel). Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
		
			
				
	
	
		
			22 lines
		
	
	
		
			509 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			22 lines
		
	
	
		
			509 B
		
	
	
	
		
			C
		
	
	
	
	
	
| // SPDX-License-Identifier: GPL-2.0-only
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| /*
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|  * sha256_ce_glue.c - SHA-256 secure hash using ARMv8 Crypto Extensions
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|  *
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|  * Copyright (C) 2022 Linaro Ltd <loic.poulain@linaro.org>
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|  */
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| 
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| #include <common.h>
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| #include <u-boot/sha256.h>
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| 
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| extern void sha256_armv8_ce_process(uint32_t state[8], uint8_t const *src,
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| 				    uint32_t blocks);
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| 
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| void sha256_process(sha256_context *ctx, const unsigned char *data,
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| 		    unsigned int blocks)
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| {
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| 	if (!blocks)
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| 		return;
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| 
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| 	sha256_armv8_ce_process(ctx->state, data, blocks);
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| }
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