mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-18 10:35:55 +00:00
3a19b480c8
This loader is quite functional and can load and run kernels. The kernels don't quite work right after loading but that should be easily fixable.
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
/*-
|
|
* Copyright (c) 2000 Doug Rabson
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <stand.h>
|
|
|
|
#include "bootstrap.h"
|
|
#include "libski.h"
|
|
|
|
static void
|
|
ski_cons_probe(struct console *cp)
|
|
{
|
|
cp->c_flags |= C_PRESENTIN | C_PRESENTOUT;
|
|
}
|
|
|
|
static int
|
|
ski_cons_init(int arg)
|
|
{
|
|
ssc(0, 0, 0, 0, SSC_CONSOLE_INIT);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
ski_cons_putchar(int c)
|
|
{
|
|
ssc(c, 0, 0, 0, SSC_PUTCHAR);
|
|
}
|
|
|
|
static int pollchar = -1;
|
|
|
|
int
|
|
ski_cons_getchar()
|
|
{
|
|
int c;
|
|
|
|
if (pollchar > 0) {
|
|
c = pollchar;
|
|
pollchar = -1;
|
|
return c;
|
|
}
|
|
|
|
do {
|
|
c = ssc(0, 0, 0, 0, SSC_GETCHAR);
|
|
} while (c == 0);
|
|
|
|
return c;
|
|
}
|
|
|
|
int
|
|
ski_cons_poll()
|
|
{
|
|
int c;
|
|
if (pollchar > 0)
|
|
return 1;
|
|
c = ssc(0, 0, 0, 0, SSC_GETCHAR);
|
|
if (!c)
|
|
return 0;
|
|
pollchar = c;
|
|
return 1;
|
|
}
|
|
|
|
struct console ski_console = {
|
|
"ski",
|
|
"ia64 SKI console",
|
|
0,
|
|
ski_cons_probe,
|
|
ski_cons_init,
|
|
ski_cons_putchar,
|
|
ski_cons_getchar,
|
|
ski_cons_poll
|
|
};
|