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/*
* Creation Date: <2004/08/28 18:38:22 greg>
* Time-stamp: <2004/08/28 18:38:22 greg>
*
* <pearpc.c>
*
* Copyright (C) 2004, Greg Watson
*
* derived from mol.c
*
* Copyright (C) 2003, 2004 Samuel Rydh (samuel@ibrium.se)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2
*
*/
#include "openbios/config.h"
#include "openbios/kernel.h"
#include "openbios/nvram.h"
#include "libc/vsprintf.h"
#include "libc/string.h"
#include "pearpc/pearpc.h"
#include <stdarg.h>
#define UART_BASE 0x3f8
// FIXME
unsigned long virt_offset = 0;
void
exit( int status )
{
for (;;);
}
void
fatal_error( const char *err )
{
printk("Fatal error: %s\n", err );
exit(0);
}
void
panic( const char *err )
{
printk("Panic: %s\n", err );
exit(0);
/* won't come here... this keeps the gcc happy */
for( ;; )
;
}
/************************************************************************/
/* print using OSI interface */
/************************************************************************/
static int do_indent;
int
printk( const char *fmt, ... )
{
char *p, buf[1024];
va_list args;
int i;
va_start(args, fmt);
i = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
for( p=buf; *p; p++ ) {
if( *p == '\n' )
do_indent = 0;
if( do_indent++ == 1 ) {
putchar( '>' );
putchar( '>' );
putchar( ' ' );
}
putchar( *p );
}
return i;
}
/************************************************************************/
/* TTY iface */
/************************************************************************/
static int ttychar = -1;
static int
tty_avail( void )
{
return 1;
}
static int
tty_putchar( int c )
{
if( tty_avail() ) {
while (!(inb(UART_BASE + 0x05) & 0x20))
;
outb(c, UART_BASE);
while (!(inb(UART_BASE + 0x05) & 0x40))
;
}
return c;
}
int
availchar( void )
{
if( !tty_avail() )
return 0;
if( ttychar < 0 )
ttychar = inb(UART_BASE);
return (ttychar >= 0);
}
int
getchar( void )
{
int ch;
if( !tty_avail() )
return 0;
if( ttychar < 0 )
return inb(UART_BASE);
ch = ttychar;
ttychar = -1;
return ch;
}
int
putchar( int c )
{
if (c == '\n')
tty_putchar('\r');
return tty_putchar(c);
}
/************************************************************************/
/* briQ specific stuff */
/************************************************************************/
#define IO_NVRAM_PA_START 0x80860000
#define IO_NVRAM_PA_END 0x80880000
static char *nvram=(char *)IO_NVRAM_PA_START;
void
dump_nvram(void)
{
static char hexdigit[] = "0123456789abcdef";
int i;
for (i = 0; i < 16*4; i++)
{
printk ("%c", hexdigit[nvram[i<<4] >> 4]);
printk ("%c", hexdigit[nvram[i<<4] % 16]);
if (!((i + 1) % 16))
{
printk ("\n");
}
else
{
printk (" ");
}
}
}
int
arch_nvram_size( void )
{
return (IO_NVRAM_PA_END-IO_NVRAM_PA_START)>>4;
}
void
arch_nvram_put( char *buf )
{
int i;
for (i=0; i<(IO_NVRAM_PA_END-IO_NVRAM_PA_START)>>4; i++)
nvram[i<<4]=buf[i];
// memcpy(nvram, buf, IO_NVRAM_PA_END-IO_NVRAM_PA_START);
printk("new nvram:\n");
dump_nvram();
}
void
arch_nvram_get( char *buf )
{
int i;
for (i=0; i<(IO_NVRAM_PA_END-IO_NVRAM_PA_START)>>4; i++)
buf[i]=nvram[i<<4];
//memcpy(buf, nvram, IO_NVRAM_PA_END-IO_NVRAM_PA_START);
printk("current nvram:\n");
dump_nvram();
}
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