| 1 | /*************************************************************************** |
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| 2 | * Copyright (c) 2011, Broadcom Corporation |
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| 3 | * All Rights Reserved |
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| 4 | * Confidential Property of Broadcom Corporation |
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| 5 | * |
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| 6 | * THIS SOFTWARE MAY ONLY BE USED SUBJECT TO AN EXECUTED SOFTWARE LICENSE |
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| 7 | * AGREEMENT BETWEEN THE USER AND BROADCOM. YOU HAVE NO RIGHT TO USE OR |
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| 8 | * EXPLOIT THIS MATERIAL EXCEPT SUBJECT TO THE TERMS OF SUCH AN AGREEMENT. |
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| 9 | * |
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| 10 | * $brcm_Workfile: $ |
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| 11 | * $brcm_Revision: $ |
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| 12 | * $brcm_Date: $ |
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| 13 | * |
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| 14 | * Module Description: SHA1 computation using SHARF block |
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| 15 | * |
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| 16 | * Revision History: |
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| 17 | * |
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| 18 | * $brcm_Log: $ |
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| 19 | * |
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| 20 | * |
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| 21 | ***************************************************************************/ |
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| 22 | |
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| 23 | //#include "cache_util.h" |
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| 24 | |
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| 25 | #include "sha1o.h" |
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| 26 | |
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| 27 | |
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| 28 | extern void clear_all_d_cache(void); |
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| 29 | |
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| 30 | struct dma_desc_t { |
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| 31 | uint32 word[8]; |
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| 32 | }; |
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| 33 | |
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| 34 | #define REG(x) ((volatile uint32 *)(0xB0000000 | (x))) |
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| 35 | #define RWRITE(addr, value) if(1){ *(REG(addr)) = (value); } else |
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| 36 | #define RREAD(addr) (*REG(addr)) |
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| 37 | |
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| 38 | |
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| 39 | void SHA1Compute_ram( uint8 * image_ptr, int len, uint32 * digest ) |
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| 40 | { |
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| 41 | uint32 value; |
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| 42 | uint32 sha1_output; |
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| 43 | uint32 i; |
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| 44 | struct dma_desc_t * pdesc; |
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| 45 | uint32 data[16]; |
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| 46 | |
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| 47 | pdesc = (0 == ((uint32)&data & 0x1f)) ? (struct dma_desc_t *)&data : (struct dma_desc_t *)(((uint32)&data[8]) & ~0x1f); |
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| 48 | |
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| 49 | for(i = 0; i < 8; i++){ |
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| 50 | pdesc[0].word[i] = 0; |
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| 51 | }; |
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| 52 | |
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| 53 | len >>= 3; /* divide by 8 as we need lenght in bytes */ |
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| 54 | |
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| 55 | pdesc[0].word[0] = ((uint32)image_ptr & (~0xA0000000)); |
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| 56 | /* field is ignored in sha1 mode */ |
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| 57 | pdesc[0].word[1] = ((uint32)0 & (~0xA0000000)); |
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| 58 | pdesc[0].word[2] = 0x40000000 | (len); |
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| 59 | /* 4 le, 0 be endian may change */ |
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| 60 | pdesc[0].word[3] = 0x0; |
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| 61 | pdesc[0].word[4] = 0x00000010; /* sha-160 */ |
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| 62 | |
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| 63 | clear_all_d_cache(); |
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| 64 | |
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| 65 | // flush_dcache((unsigned int)image_ptr, (unsigned int)image_ptr + len); |
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| 66 | // flush_dcache((unsigned int)pdesc, (unsigned int)pdesc + 8*4); |
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| 67 | |
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| 68 | value = RREAD(0x00340004); |
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| 69 | RWRITE(0x00340004, 0x00000000); |
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| 70 | RWRITE(0x00340008, 0x00000003); |
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| 71 | RWRITE(0x00340800, 0x00000001); |
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| 72 | RWRITE(0x00340100, (((uint32)pdesc) & (~0xA0000000))); |
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| 73 | RWRITE(0x00340104, 0x00000001); |
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| 74 | do{ |
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| 75 | value = RREAD(0x00340110); |
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| 76 | }while (value != 2); |
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| 77 | RWRITE(0x00340104, 0x00000000); |
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| 78 | |
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| 79 | sha1_output = 0x340018; /* end address of sha1 value */ |
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| 80 | for(i=0; i < 5; i++){ |
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| 81 | digest[i] = RREAD(sha1_output); |
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| 82 | sha1_output -= 4; |
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| 83 | } |
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| 84 | } |
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