166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
/*
|
|
* This file is part of the libpayload project.
|
|
*
|
|
* Copyright (C) 2008 Advanced Micro Devices, Inc.
|
|
* Copyright (C) 2008 Ulf Jordan <jordan@chalmers.se>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <libpayload.h>
|
|
|
|
#define IOBASE lib_sysinfo.ser_ioport
|
|
|
|
#ifdef CONFIG_SERIAL_SET_SPEED
|
|
#define DIVISOR (115200 / CONFIG_SERIAL_BAUD_RATE)
|
|
#endif
|
|
|
|
/* This is a hack - we convert the drawing characters to ASCII */
|
|
|
|
static unsigned char translate_special_chars(unsigned char c)
|
|
{
|
|
switch(c) {
|
|
case 196:
|
|
return '-';
|
|
case 179:
|
|
return '|';
|
|
case 218:
|
|
case 191:
|
|
case 192:
|
|
case 217:
|
|
return '+';
|
|
default:
|
|
return ' ';
|
|
}
|
|
}
|
|
|
|
void serial_init(void)
|
|
{
|
|
#ifdef CONFIG_SERIAL_SET_SPEED
|
|
unsigned char reg;
|
|
|
|
/* Disable interrupts. */
|
|
outb(0, IOBASE + 0x01);
|
|
|
|
/* Assert RTS and DTR. */
|
|
outb(3, IOBASE + 0x04);
|
|
|
|
/* Set the divisor latch. */
|
|
reg = inb(IOBASE + 0x03);
|
|
outb(reg | 0x80, IOBASE + 0x03);
|
|
|
|
/* Write the divisor. */
|
|
outb(DIVISOR & 0xFF, IOBASE);
|
|
outb(DIVISOR >> 8 & 0xFF, IOBASE + 1);
|
|
|
|
/* Restore the previous value of the divisor. */
|
|
outb(reg &= ~0x80, IOBASE + 0x03);
|
|
#endif
|
|
}
|
|
|
|
void serial_putchar(unsigned char c)
|
|
{
|
|
if (c > 127)
|
|
c = translate_special_chars(c);
|
|
|
|
while ((inb(IOBASE + 0x05) & 0x20) == 0) ;
|
|
outb(c, IOBASE);
|
|
}
|
|
|
|
int serial_havechar(void)
|
|
{
|
|
return inb(IOBASE + 0x05) & 0x01;
|
|
}
|
|
|
|
int serial_getchar(void)
|
|
{
|
|
while (!serial_havechar()) ;
|
|
return (int)inb(IOBASE);
|
|
}
|
|
|
|
/* These are thinly veiled vt100 functions used by curses */
|
|
|
|
#define VT100_CLEAR "\e[H\e[J"
|
|
#define VT100_SBOLD "\e[1m"
|
|
#define VT100_EBOLD "\e[m"
|
|
#define VT100_CURSOR_ADDR "\e[%d;%dH"
|
|
/* The following smacs/rmacs are actually for xterm; a real vt100 has
|
|
enacs=\E(B\E)0, smacs=^N, rmacs=^O. */
|
|
#define VT100_SMACS "\e(0"
|
|
#define VT100_RMACS "\e(B"
|
|
/* A vt100 doesn't do color, setaf/setab below are from xterm-color. */
|
|
#define VT100_SET_COLOR "\e[3%d;4%dm"
|
|
|
|
static void serial_putcmd(char *str)
|
|
{
|
|
while(*str)
|
|
serial_putchar(*(str++));
|
|
}
|
|
|
|
void serial_clear(void)
|
|
{
|
|
serial_putcmd(VT100_CLEAR);
|
|
}
|
|
|
|
void serial_start_bold(void)
|
|
{
|
|
serial_putcmd(VT100_SBOLD);
|
|
}
|
|
|
|
void serial_end_bold(void)
|
|
{
|
|
serial_putcmd(VT100_EBOLD);
|
|
}
|
|
|
|
void serial_start_altcharset(void)
|
|
{
|
|
serial_putcmd(VT100_SMACS);
|
|
}
|
|
|
|
void serial_end_altcharset(void)
|
|
{
|
|
serial_putcmd(VT100_RMACS);
|
|
}
|
|
|
|
/**
|
|
* Set the foreground and background colors on the serial console.
|
|
*
|
|
* @param fg Foreground color number.
|
|
* @param bg Background color number.
|
|
*/
|
|
void serial_set_color(short fg, short bg)
|
|
{
|
|
char buffer[32];
|
|
snprintf(buffer, sizeof(buffer), VT100_SET_COLOR, fg, bg);
|
|
serial_putcmd(buffer);
|
|
}
|
|
|
|
void serial_set_cursor(int y, int x)
|
|
{
|
|
char buffer[32];
|
|
snprintf(buffer, sizeof(buffer), VT100_CURSOR_ADDR, y + 1, x + 1);
|
|
serial_putcmd(buffer);
|
|
}
|