#include	"u.h"#include	"../port/lib.h"#include	"mem.h"#include	"dat.h"#include	"fns.h"#include	"io.h"#include	"ureg.h" /* * uart for initial port */ typedef struct Uartregs Uartregs;struct Uartregs {	uchar	rbr;#define	thr	rbr#define	dll	rbr	uchar	ier;#define	dlm	ier	uchar	fcr;#define	iir	fcr	uchar	lcr;	uchar	mcr;	uchar	lsr;	uchar	msr;	uchar	scr;}; #define	UARTREGS(n)	((Uartregs*)(PHYSUART0+(n)*0x100)) enum {	/* ier */	Edssi=	1<<3,	Elsi=		1<<2,	Etbei=	1<<1,	Erbfi=	1<<0, 	/* iir */	Fci0=	0<<4,	Fci3=	3<<4,	Ipl=		7<<1,	Ip=		1<<0, 	/* fcr */	Rftl1=	0<<6,	/* receiver trigger level 1, 16, 32, 56 */	Rftl16=	1<<6,	Rftl32=	2<<6,	Rftl56=	3<<6,	Dms=	1<<3,	/* =0, single transfer; =1, multiple transfers */	Tfr=		1<<2,	/* transmitter fifo reset */	Rfr=		1<<1,	/* receiver fifo reset */	Fifoe=	1<<0,	/* =0, disable fifos; =1, enable fifos */ 	/* lcr */	Dlab=	1<<7,	/* =0, normal; =1, dll/dlm visible */	Sb=		1<<6,	/* set break */	Sp=		1<<5,	/* =1, enable sticky parity */	Eps=		1<<4,	/* =1, generate even parity */	Pen=		1<<3,	/* =1, enable parity checking */	Sbs=		1<<2,	/* =0, 1 stop bit; =1, 1.5 or 2 stop bits (see Wls) */	Wls=		3<<0,	/* set to nbit-5 for nbit characters */ 	/* mcr */	Afc=		1<<5,	/* =1, auto flow control enabled */	Loop=	1<<4,	/* =1, loop back mode enabled */	Out2=	1<<3,	/* =0, OUT2# active */	Out1=	1<<2,	/* =0, OUT1# active */	Rts=		1<<1,	/* =0, RTS# inactive (1); =1, RTS# active (0) */	Dtr=		1<<0,	/* =0, DTS# inactive; =1, DTS# active */ 	/* lsr */	Rfe=		1<<7,	/* error instances in fifo */	Temt=	1<<6,	/* transmitter empty */	Thre=	1<<5,	/* transmitter holding register/fifo empty */	Be=		1<<4,	/* break (interrupt) */	Fe=		1<<3,	/* framing error */	Pe=		1<<2,	/* parity error */	Oe=		1<<1,	/* overrun error */	Dr=		1<<0,	/* receiver data ready */ 	/* msr */	Dcd=	1<<7,	/* follows Out2 */	Ri=		1<<6,	/* follows Out1 */	Dsr=		1<<5,	/* follows Dtr */	Cts=		1<<4,	/* follows Rts */	Ddcd=	1<<3,	/* Dcd input changed */	Teri=	1<<2,	/* Ri changed from 0 to 1 */	Ddsr=	1<<1,	/* Dsr input changed */	Dcts=	1<<0,	/* Cts input changed */}; void (*serwrite)(char*, int) = uartputs; voiduartinstall(void){} voiduartspecial(int, int, Queue**, Queue**, int (*)(Queue*, int)){} voiduartputc(int c){	Uartregs *r; 	if(c == 0)		return;	r = UARTREGS(0);	while((r->lsr & Thre) == 0)		{}	r->thr = c;	if(c == '\n')		while((r->lsr & Thre) == 0)	/* flush xmit fifo */			{}} 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){}