/* *  405EP specific code for its uart. */ #define	UR(p,r)	((uchar*)(p))[r]#define uartwr(u,r,v)	(UR(u->regs,r) = (v))#define uartwrreg(u,r,v)	(UR(u->regs,r)= (u)->sticky[r] | (v))#define uartrdreg(u,r)		UR(u->regs,r) extern void	uartsetup(ulong, void*, ulong, char*);extern void	uartclock(void); static voiduartportpower(Uart*, int){	/* TO DO: power control */} /* *  handle an interrupt to a single uart */static voiduartintrx(Ureg*, void* arg){	uartintr(arg);} /* *  install the uarts (called by reset) */voiduartinstall(void){	static int already; 	if(already)		return;	already = 1; 	/* first two ports are always there */	uartsetup(0, (void*)PHYSUART0, 0, "eia0");	intrenable(VectorUART0, uartintrx, uart[0], BUSUNKNOWN, "uart0");	uartsetup(1, (void*)PHYSUART1, 0, "eia1");	intrenable(VectorUART1, uartintrx, uart[1], BUSUNKNOWN, "uart1");	addclock0link(uartclock, 22);} /* * If the UART's receiver can be connected to a DMA channel, * this function does what is necessary to create the * connection and returns the DMA channel number. * If the UART's receiver cannot be connected to a DMA channel, * a -1 is returned. */charuartdmarcv(int dev){ 	USED(dev);	return -1;} voiduartputc(int c){	uchar *p; 	if(c == 0)		return;	p = (uchar*)PHYSUART0;	while((UR(p,Lstat) & Outready) == 0){		;	}	UR(p,Data) = c;	eieio();	if(c == '\n')		while((UR(p,Lstat) & Outready) == 0){	/* let fifo drain */			;		}} voiduartputs(char *data, int len){	int s; //	if(!uartspcl && !redirectconsole)//		return;	s = splhi();	while(--len >= 0){		if(*data == '\n')			uartputc('\r');		uartputc(*data++);	}	splx(s);} voiduartwait(void){}