#include <common.h>#include <ns16550.h>#include "short_types.h"#include "memio.h"#include "articiaS.h"#ifndef CFG_NS16550static uint32 ComPort1;uint16 SerialEcho = 1;#define RECEIVER_HOLDING 0#define TRANSMITTER_HOLDING 0#define INTERRUPT_ENABLE 1#define INTERRUPT_STATUS 2#define FIFO_CONTROL 2#define LINE_CONTROL 3#define MODEM_CONTROL 4#define LINE_STATUS 5#define MODEM_STATUS 6#define SCRATCH_PAD 7#define DIVISOR_LATCH_LSB 0#define DIVISOR_LATCH_MSB 1#define PRESCALER_DIVISION 5#define COM_WRITE_BYTE(reg, byte) out_byte((ComPort1+reg), byte)#define COM_READ_BYTE(reg) in_byte((ComPort1+reg))static int serial_init_done = 0;void serial_init (void){#if 0	uint32 clock_divisor = 115200 / baudrate;	uint8 cfg;	uint8 a;	uint16 devfn = 7 << 3;	if (serial_init_done)		return;	/*  Enter configuration mode */	cfg = pci_read_cfg_byte (0, devfn, 0x85);	pci_write_cfg_byte (0, devfn, 0x85, cfg | 0x02);	/* Set serial port COM1 as 3F8 */	out_byte (0x3F0, 0xE7);	out_byte (0x3f1, 0xfe);	/* Set serial port COM2 as 2F8 */	out_byte (0x3f0, 0xe8);	out_byte (0x3f1, 0xeb);	/* Enable */	out_byte (0x3f0, 0xe2);	a = in_byte (0x3f1);	a |= 0xc;	out_byte (0x3f0, 0xe2);	out_byte (0x3f1, a);	/*  Reset the configuration mode */	pci_write_cfg_byte (0, devfn, 0x85, cfg);#endif	ComPort1 = 0x3F8;	/*  Disable interrupts */	COM_WRITE_BYTE (INTERRUPT_ENABLE, 0x00);	/*  Set baud rate */	/* COM_WRITE_BYTE(LINE_CONTROL, 0x83); */	/* COM_WRITE_BYTE(DIVISOR_LATCH_LSB, (uint8)(clock_divisor & 0xFF)); */	/* COM_WRITE_BYTE(DIVISOR_LATCH_MSB, (uint8)(clock_divisor >> 8)); */	/* __asm("eieio"); */	/*  Set 8-N-1 */	COM_WRITE_BYTE (LINE_CONTROL, 0x03);	__asm ("eieio");	/*  Disable FIFO */	COM_WRITE_BYTE (MODEM_CONTROL, 0x03);	COM_WRITE_BYTE (FIFO_CONTROL, 0x07);	__asm ("eieio");	serial_init_done = 1;}extern int console_changed;void serial_putc (const char sendme){	if (sendme == '\n') {		while ((in_byte (0x3FD) & 0x40) == 0);		out_byte (0x3f8, 0x0D);	}	while ((in_byte (0x3FD) & 0x40) == 0);	out_byte (0x3f8, sendme);}int serial_getc (void){#if 0	uint8 c;	for (;;) {		uint8 x = in_byte (0x3FD);		if (x & 0x01)			break;		if (x & 0x0C)			out_byte (0x3fd, 0x0c);	}	c = in_byte (0x3F8);	return c;#else	while ((in_byte (0x3FD) & 0x01) == 0) {		if (console_changed != 0) {			printf ("Console changed\n");			console_changed = 0;			return 0;		}	}	return in_byte (0x3F8);#endif}int serial_tstc (void){	return (in_byte (0x03FD) & 0x01) != 0;}void serial_debug_putc (int c){	serial_puts ("DBG");	serial_putc (c);	serial_putc (0x0d);	serial_putc (0x0A);}#elseconst NS16550_t Com0 = (NS16550_t) CFG_NS16550_COM1;const NS16550_t Com1 = (NS16550_t) CFG_NS16550_COM2;int serial_init (void){	DECLARE_GLOBAL_DATA_PTR;	uint32 clock_divisor = 115200 / gd->baudrate;	NS16550_init (Com0, clock_divisor);	/* NS16550_reinit(Com1, clock_divisor); */	/* serial_puts("COM1: 3F8h initalized"); */	return (0);}#if 0void serial_putc (const char c){	NS16550_putc (Com0, c);	if (c == '\n')		NS16550_putc (Com0, 0x0D);}int serial_getc (void){	return (int) NS16550_getc (Com0);}int serial_tstc (void){	return NS16550_tstc (Com0);}#elsevoid serial_putc (const char sendme){	if (sendme == '\n') {		while ((in_byte (0x3FD) & 0x40) == 0);		out_byte (0x3f8, 0x0D);	}	while ((in_byte (0x3FD) & 0x40) == 0);	out_byte (0x3f8, sendme);}extern int console_changed;int serial_getc (void){#if 0	uint8 c;	for (;;) {		uint8 x = in_byte (0x3FD);		if (x & 0x01)			break;		if (x & 0x0C)			out_byte (0x3fd, 0x0c);	}	c = in_byte (0x3F8);	return c;#else	while ((in_byte (0x3FD) & 0x01) == 0) {		if (console_changed != 0) {			console_changed = 0;			return 0;		}	}	return in_byte (0x3F8);#endif}int serial_tstc (void){	return (in_byte (0x03FD) & 0x01) != 0;}#endif#endifvoid serial_puts (const char *string){	while (*string)		serial_putc (*string++);}void serial_setbrg (void){	DECLARE_GLOBAL_DATA_PTR;	uint32 clock_divisor = 115200 / gd->baudrate;	NS16550_init (Com0, clock_divisor);}