/***************************************** Copyright (c) 2001-2002 Sigma Designs, Inc. All Rights Reserved Proprietary and Confidential *****************************************//* This is file is part of the Jasper PVP boot loader */#include "config.h"#include "uart.h"#include "util.h"#include "jasper.h"#include "bootflash.h"#include "em85xx_pbi.h"int boot_status;#include "jasper.h"void EM85xx_WritePIO (int PIONumber, int Data){	// don't assume that PIO is output	if (PIONumber < 16)	{		*PIO_0_DATA_REG = ((Data? 0x00010001:0x00010000) << PIONumber);		*PIO_0_DIR_REG = (0x00010001 << PIONumber);	}	else	{		*PIO_1_DATA_REG = ((Data? 0x00010001:0x00010000) << (PIONumber-16));		*PIO_1_DIR_REG = (0x00010001 << (PIONumber-16));	}}// ************************// This is the normal entry// ************************int entry (void){	unsigned long kload = KERNEL_LOAD_ADDRESS;#ifdef ENABLE_UART	InitUart ();	PrintUart ("\r\nEM85xx Bootloader v" BOOTLOADER_VERSIONSTR " (" __DATE__ " " __TIME__ ")\r\n", -1);	PrintUart ("\r\n", -1);#endif	// For old envision board - enables network	// PIO1_3, PIO1_4 to low//	EM85xx_WritePIO (3 + 16, 0);//	EM85xx_WritePIO (4 + 16, 0);#if 1        // Setup PBI bus        *PB_SL_CTRL = PBI_IN_IDE_PADS;        *PB_CS_CONFIG &= ~(0x1111 << 0);   // 0x3000        *PB_CS_CONFIG |= PBI_IDE << 0;   // 0x3000        // Enable bus output        *(unsigned long *)0x00500B40 = 0x10000;        // enable IDE output#endif	if (!try_boot_flash (kload, ROMFS_START_ADDRESS))	{		PrintUart ("boot_flash failed\r\n", 64);		goto boot_failed;	}	// return the adress to jump to	PrintUart ("jumping to ", 64);	PrintLong ((unsigned long)kload);	PrintUart ("\r\n", 64);	return (int)kload;boot_failed: // What to do when everything fails	while (1);	return -1;}