uxmodem.c

W90P910的BOOTLOADER,难找呀,我想应该是第一份吧.

/******************************************************************************
 *
 * Copyright (c) 2008 Nuvoton Electronics Corp.
 * All rights reserved.
 *
 * File name: uxmodem.c
 *
 * 
 ******************************************************************************/
#include <string.h>
#include "platform.h"
#include "usbd.h"
#include "uprintf.h"

extern UINT32 volatile Bulk_Out_Transfer_Size;
#define NON_CACHE		0x80000000
#define ALIGN					0x04

extern void usb_isr(void);
extern int usb_recv(UINT8* buf,UINT32 len);
extern int usb_send(UINT8* buf,UINT32 len);

int loop=1;

void usleep(int count)
{
	int volatile i=0;
	
	for(i=0;i<count;i++);
	
}

int Disable_USB(void)
{

		outpw(REG_USBD_PHY_CTL, inpw(REG_USBD_PHY_CTL) & (~0x200));    // offset 0x704

	outpw(REG_CLKEN, inpw(REG_CLKEN) & (~0x100));
 	outpw(REG_PWRON, inpw(REG_PWRON) & (~0x400));//D+ low power off usb
   	
   	return 0;
	
}

int Enable_USB(void)
{
	outpw(REG_CLKEN, inpw(REG_CLKEN) | 0x100);
	outpw(REG_USBD_PHY_CTL, inpw(REG_USBD_PHY_CTL) | 0x200);    // offset 0x704

	/* wait PHY clock ready */
	while(1)
	{
		outpw(REG_USBD_EPA_MPS, 0x20);
		if (inpw(REG_USBD_EPA_MPS) == 0x20)
			break;
	}	
	USB_Initialize();
	USB_Int_Init();
	
	usleep(0xf000);
	outpw(REG_PWRON, inpw(REG_PWRON) | 0x400);
	
    return 0;
	
}


void usb_down(UINT32 _base,unsigned int* fileSize)
{
	int len;
	unsigned char* ptr;
	unsigned int file_len=0;
	unsigned char* _ch;
	unsigned int* _ack;
	
	_ch=(unsigned char*)(_base);
	//_ch=((unsigned char*)(((unsigned int)_ch)/*|NON_CACHE*/));

    usleep(10000);//give usb device init time
	
    	
    	ptr=_ch;
    	file_len=0;
    	
	    while(1)
	    {
		
	    	if(Bulk_Out_Transfer_Size>0)
	    	{
	       	usb_recv((unsigned char*)ptr,4);
	    
	    		file_len=*((unsigned int*)ptr);
	    	
	    		break;
	    	}
	    }
	  
	    if(((UINT32)_ch+file_len)%ALIGN!=0)
	    	_ack=(unsigned int*)(_ch+file_len+(ALIGN-((UINT32)_ch+file_len)%ALIGN));
	    else
	    	_ack=(unsigned int*)(_ch+file_len);

		_ack=((unsigned int*)(((unsigned int)_ack)/*|NON_CACHE*/));
		
		*fileSize=file_len;
		
		//uprintf("file size %d\n", file_len);
		
		//*_ack=4;
	  //  usb_send((unsigned char*)_ack,4);//send ack to PC
	    
	    do
	    {
	    	if(Bulk_Out_Transfer_Size>0)
	    	{
	    		len=Bulk_Out_Transfer_Size;
	    		usb_recv(ptr,len);//recv data from PC
	    		ptr+=len;
	    		*_ack=len;
	    		usb_send((unsigned char*)_ack,4);//send ack to PC

	    	}
		}while((ptr-_ch)<file_len);

}