[Serial] Split serial console from serial driver
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f866b17998
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@ -54,7 +54,7 @@
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REQUIRE_OBJECT ( bios_console );
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#endif
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#ifdef CONSOLE_SERIAL
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REQUIRE_OBJECT ( serial );
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REQUIRE_OBJECT ( serial_console );
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#endif
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#ifdef CONSOLE_DIRECT_VGA
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REQUIRE_OBJECT ( video_subr );
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@ -12,10 +12,10 @@
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*/
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#include "stddef.h"
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#include "console.h"
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#include <gpxe/init.h>
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#include "io.h"
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#include <unistd.h>
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#include <gpxe/serial.h>
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#include "config/serial.h"
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/* Set default values if none specified */
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@ -91,13 +91,11 @@
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#define uart_writeb(val,addr) outb((val),(addr))
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#endif
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struct console_driver serial_console __console_driver;
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/*
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* void serial_putc(int ch);
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* Write character `ch' to port UART_BASE.
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*/
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static void serial_putc ( int ch ) {
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void serial_putc ( int ch ) {
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int i;
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int status;
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i = 1000; /* timeout */
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@ -116,7 +114,7 @@ static void serial_putc ( int ch ) {
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* int serial_getc(void);
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* Read a character from port UART_BASE.
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*/
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static int serial_getc ( void ) {
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int serial_getc ( void ) {
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int status;
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int ch;
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do {
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@ -135,7 +133,7 @@ static int serial_getc ( void ) {
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* If there is a character in the input buffer of port UART_BASE,
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* return nonzero; otherwise return 0.
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*/
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static int serial_ischar ( void ) {
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int serial_ischar ( void ) {
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int status;
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status = uart_readb(UART_BASE + UART_LSR); /* line status reg; */
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return status & 1; /* rx char available */
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@ -217,7 +215,6 @@ static void serial_init ( void ) {
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/* line status reg */
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status = uart_readb(UART_BASE + UART_LSR);
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} while(status & UART_LSR_DR);
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serial_console.disabled = 0;
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out:
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return;
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}
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@ -229,10 +226,6 @@ static void serial_init ( void ) {
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*/
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static void serial_fini ( void ) {
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int i, status;
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if (serial_console.disabled) {
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/* no serial interface */
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return;
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}
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/* Flush the output buffer to avoid dropping characters,
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* if we are reinitializing the serial port.
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*/
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@ -243,26 +236,17 @@ static void serial_fini ( void ) {
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/* Don't mark it as disabled; it's still usable */
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}
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struct console_driver serial_console __console_driver = {
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.putchar = serial_putc,
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.getchar = serial_getc,
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.iskey = serial_ischar,
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.disabled = 1,
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};
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/** Serial console startup function */
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struct startup_fn serial_startup_fn __startup_fn ( STARTUP_NORMAL ) = {
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.startup = serial_init,
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.shutdown = serial_fini,
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};
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/**
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* Serial console initialisation function
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* Serial driver initialisation function
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*
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* Initialise console early on so that it is available to capture
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* early debug messages. It is safe to call serial_init() multiple
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* times.
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* Initialise serial port early on so that it is available to capture
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* early debug messages.
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*/
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struct init_fn serial_init_fn __init_fn ( INIT_CONSOLE ) = {
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struct init_fn serial_init_fn __init_fn ( INIT_SERIAL ) = {
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.initialise = serial_init,
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};
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/** Serial driver startup function */
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struct startup_fn serial_startup_fn __startup_fn ( STARTUP_NORMAL ) = {
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.shutdown = serial_fini,
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};
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@ -0,0 +1,31 @@
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#include <gpxe/init.h>
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#include <gpxe/serial.h>
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#include "console.h"
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/** @file
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*
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* Serial console
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*
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*/
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struct console_driver serial_console __console_driver;
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static void serial_console_init ( void ) {
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/* Serial driver initialization should already be done,
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* time to enable the serial console. */
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serial_console.disabled = 0;
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}
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struct console_driver serial_console __console_driver = {
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.putchar = serial_putc,
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.getchar = serial_getc,
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.iskey = serial_ischar,
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.disabled = 1,
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};
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/**
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* Serial console initialisation function
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*/
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struct init_fn serial_console_init_fn __init_fn ( INIT_CONSOLE ) = {
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.initialise = serial_console_init,
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};
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@ -22,8 +22,9 @@ struct init_fn {
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*/
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#define INIT_EARLY 01 /**< Early initialisation */
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#define INIT_CONSOLE 02 /**< Console initialisation */
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#define INIT_NORMAL 03 /**< Normal initialisation */
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#define INIT_SERIAL 02 /**< Serial driver initialisation */
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#define INIT_CONSOLE 03 /**< Console initialisation */
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#define INIT_NORMAL 04 /**< Normal initialisation */
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/** @} */
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@ -0,0 +1,14 @@
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#ifndef _GPXE_SERIAL_H
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#define _GPXE_SERIAL_H
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/** @file
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*
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* Serial driver functions
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*
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*/
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extern void serial_putc ( int ch );
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extern int serial_getc ( void );
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extern int serial_ischar ( void );
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#endif /* _GPXE_SERIAL_H */
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