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/* $OpenBSD: cmd_i386.c,v 1.20 1998/02/24 22:06:47 weingart Exp $ */
/*
* Copyright (c) 1997 Michael Shalayeff, Tobias Weingartner
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* 4. 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 ``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 REGENTS 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 <sys/param.h>
#include <sys/reboot.h>
#include <machine/biosvar.h>
#include <sys/disklabel.h>
#include "disk.h"
#include "debug.h"
#include "biosdev.h"
#include "libsa.h"
#include <cmd.h>
extern const char version[];
static int Xboot __P((void));
static int Xdiskinfo __P((void));
static int Xmemory __P((void));
static int Xregs __P((void));
static int Xcnvmem __P((void));
static int Xextmem __P((void));
/* From gidt.S */
int bootbuf __P((void*, int));
const struct cmd_table cmd_machine[] = {
{ "boot", CMDT_CMD, Xboot },
{ "diskinfo", CMDT_CMD, Xdiskinfo },
{ "memory", CMDT_CMD, Xmemory },
{ "regs", CMDT_CMD, Xregs },
{"cnvmem", CMDT_CMD, Xcnvmem},
{"extmem", CMDT_CMD, Xextmem},
{ NULL, 0 }
};
/* Set size of conventional ram */
static int
Xcnvmem()
{
if (cmd.argc != 2)
printf("cnvmem %d\n", cnvmem);
else
cnvmem = strtol(cmd.argv[1], NULL, 0);
return 0;
}
/* Set size of extended ram */
static int
Xextmem()
{
if (cmd.argc != 2)
printf("extmem %d\n", extmem);
else
extmem = strtol(cmd.argv[1], NULL, 0);
return 0;
}
static int
Xdiskinfo()
{
dump_diskinfo();
return 0;
}
static int
Xregs()
{
DUMP_REGS;
return 0;
}
static int
Xboot()
{
int dev, part, st;
char buf[DEV_BSIZE], *dest = (void*)0x7c00;
if(cmd.argc != 2) {
printf("machine boot {fd,hd}<0123>[abcd]\n");
printf("Where [0123] is the disk number,"
" and [abcd] is the partition.\n");
return 0;
}
/* Check arg */
if(cmd.argv[1][0] != 'f' && cmd.argv[1][0] != 'h')
goto bad;
if(cmd.argv[1][1] != 'd')
goto bad;
if(cmd.argv[1][2] < '0' || cmd.argv[1][2] > '3')
goto bad;
if((cmd.argv[1][3] < 'a' || cmd.argv[1][3] > 'd') && cmd.argv[1][3] != '\0')
goto bad;
printf("Booting from %s ", cmd.argv[1]);
dev = (cmd.argv[1][0] == 'h')?0x80:0;
dev += (cmd.argv[1][2] - '0');
part = (cmd.argv[1][3] - 'a');
if (part > 0)
printf("[%x,%d]\n", dev, part);
else
printf("[%x]\n", dev);
/* Read boot sector from device */
st = biosd_io(F_READ, dev, 0, 0, 0, 1, buf);
if(st) goto bad;
/* Frob boot flag in buffer from HD */
if((dev & 0x80) && (part > 0)){
int i, j;
for(i = 0, j = DOSPARTOFF; i < 4; i++, j += 16)
if(part == i)
buf[j] |= 0x80;
else
buf[j] &= ~0x80;
}
/* Load %dl, ljmp */
bcopy(buf, dest, DEV_BSIZE);
bootbuf(dest, dev);
bad:
printf("Invalid device!\n");
return 0;
}
static int
Xmemory()
{
bios_memmap_t *tm = memory_map;
int count, total = 0;
for(count = 0; tm[count].type != BIOS_MAP_END; count++){
printf("Region %d: type %u at 0x%lx for %luKB\n", count,
tm[count].type, (long)tm[count].addr, (long)tm[count].size);
if(tm[count].type == BIOS_MAP_FREE)
total += tm[count].size;
}
printf("Low ram: %dKB High ram: %dKB\n", cnvmem, extmem);
printf("Total free memory: %dKB\n", total);
return 0;
}
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