/***************************************************************************
 *     Copyright (c) 2003-2010, Broadcom Corporation
 *     All Rights Reserved
 *     Confidential Property of Broadcom Corporation
 *
 *  THIS SOFTWARE MAY ONLY BE USED SUBJECT TO AN EXECUTED SOFTWARE LICENSE
 *  AGREEMENT  BETWEEN THE USER AND BROADCOM.  YOU HAVE NO RIGHT TO USE OR
 *  EXPLOIT THIS MATERIAL EXCEPT SUBJECT TO THE TERMS OF SUCH AN AGREEMENT.
 *
 * $brcm_Workfile: $
 * $brcm_Revision: $
 * $brcm_Date: $
 *
 * Module Description: Stage 1 C entry point.
 *
 * Revision History:
 *
 * $brcm_Log: $
 * 
 *
 ***************************************************************************/

/* copy memory block from word aligned src to word aligned destination 
   with word aligned size. All pointer and size must be 4 bytes aligned */
extern void aligned_copy(void * src, void * dst, unsigned int n);

extern unsigned int _stage2_start;
extern unsigned int _stage2_size;
extern unsigned int __start_s2;
extern unsigned int key1[];

#define KSEG0_KSEG1(x) ((0x20000000) | (unsigned long)(x))
#if defined(RSA_BITS)
#define SIGNATURE_SIZE (RSA_BITS/8)
#else
#define SIGNATURE_SIZE 0x80
#endif
unsigned int stage2_signature[SIGNATURE_SIZE/4];
unsigned int key1_copy[SIGNATURE_SIZE/4];

#define XPT_OTP_MC1_BASE 0xb053802c

void print_string(void)
{
	/* New B0 scramble function needs print_string to compile */
}
/* write character on serial port */
extern void _writeasm(int c);

int signature_check(unsigned long in, unsigned long size, unsigned long signature, unsigned long public_key);

void stage1_main(void)
{
    void * stage2_signature_address;
    int rc;
    stage2_signature_address = (void*)((unsigned int)&_stage2_start + (unsigned int)&_stage2_size);
    /* 
       we must validate key1 somehow.
     */
    aligned_copy(stage2_signature_address, stage2_signature, SIGNATURE_SIZE);
    aligned_copy(key1, key1_copy, SIGNATURE_SIZE);
    rc = signature_check(KSEG0_KSEG1(&__start_s2), (unsigned long)&_stage2_size, (unsigned long)stage2_signature, (unsigned long)key1_copy);
    if(0 != rc){
        /* signature is invalid */
        _writeasm('-');
        /* halt if bootloader verification is enabled */
        if((*(unsigned int*)XPT_OTP_MC1_BASE) & 4)
            __asm__("wait");
    }
    /* exit back to assembly and start stage two execution */
}

#include "signature.c"

/* Please do not remove! */
/* Local Variables: */
/* mode: C */
/* indent-tabs-mode: nil */
/* End: */