| 1 | /*************************************************************************** |
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| 2 | * Copyright (c) 2003-2010, 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: Stage 1 C entry point. |
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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 | /* copy memory block from word aligned src to word aligned destination |
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| 24 | with word aligned size. All pointer and size must be 4 bytes aligned */ |
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| 25 | extern void aligned_copy(void * src, void * dst, unsigned int n); |
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| 26 | |
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| 27 | extern unsigned int _stage2_start; |
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| 28 | extern unsigned int _stage2_size; |
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| 29 | extern unsigned int __start_s2; |
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| 30 | extern unsigned int key1[]; |
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| 31 | |
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| 32 | #define KSEG0_KSEG1(x) ((0x20000000) | (unsigned long)(x)) |
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| 33 | #if defined(RSA_BITS) |
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| 34 | #define SIGNATURE_SIZE (RSA_BITS/8) |
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| 35 | #else |
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| 36 | #define SIGNATURE_SIZE 0x80 |
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| 37 | #endif |
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| 38 | unsigned int stage2_signature[SIGNATURE_SIZE/4]; |
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| 39 | unsigned int key1_copy[SIGNATURE_SIZE/4]; |
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| 40 | |
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| 41 | #define XPT_OTP_MC1_BASE 0xb053802c |
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| 42 | |
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| 43 | void print_string(void) |
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| 44 | { |
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| 45 | /* New B0 scramble function needs print_string to compile */ |
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| 46 | } |
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| 47 | /* write character on serial port */ |
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| 48 | extern void _writeasm(int c); |
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| 49 | |
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| 50 | int signature_check(unsigned long in, unsigned long size, unsigned long signature, unsigned long public_key); |
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| 51 | |
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| 52 | void stage1_main(void) |
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| 53 | { |
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| 54 | void * stage2_signature_address; |
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| 55 | int rc; |
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| 56 | stage2_signature_address = (void*)((unsigned int)&_stage2_start + (unsigned int)&_stage2_size); |
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| 57 | /* |
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| 58 | we must validate key1 somehow. |
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| 59 | */ |
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| 60 | aligned_copy(stage2_signature_address, stage2_signature, SIGNATURE_SIZE); |
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| 61 | aligned_copy(key1, key1_copy, SIGNATURE_SIZE); |
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| 62 | rc = signature_check(KSEG0_KSEG1(&__start_s2), (unsigned long)&_stage2_size, (unsigned long)stage2_signature, (unsigned long)key1_copy); |
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| 63 | if(0 != rc){ |
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| 64 | /* signature is invalid */ |
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| 65 | _writeasm('-'); |
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| 66 | /* halt if bootloader verification is enabled */ |
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| 67 | if((*(unsigned int*)XPT_OTP_MC1_BASE) & 4) |
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| 68 | __asm__("wait"); |
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| 69 | } |
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| 70 | /* exit back to assembly and start stage two execution */ |
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| 71 | } |
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| 72 | |
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| 73 | #include "signature.c" |
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| 74 | |
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| 75 | /* Please do not remove! */ |
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| 76 | /* Local Variables: */ |
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| 77 | /* mode: C */ |
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| 78 | /* indent-tabs-mode: nil */ |
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| 79 | /* End: */ |
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