183 lines
4.6 KiB
C
183 lines
4.6 KiB
C
/*-
|
|
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <stand.h>
|
|
#include <sys/param.h>
|
|
#include <sys/reboot.h>
|
|
#include <sys/linker.h>
|
|
#include "bootstrap.h"
|
|
#include "libi386.h"
|
|
#include "btxv86.h"
|
|
|
|
/*
|
|
* Return a 'boothowto' value corresponding to the kernel arguments in
|
|
* (kargs) and any relevant environment variables.
|
|
*/
|
|
static struct
|
|
{
|
|
const char *ev;
|
|
int mask;
|
|
} howto_names[] = {
|
|
{"boot_askname", RB_ASKNAME},
|
|
{"boot_cdrom", RB_CDROM},
|
|
{"boot_ddb", RB_KDB},
|
|
{"boot_dfltroot", RB_DFLTROOT},
|
|
{"boot_gdb", RB_GDB},
|
|
{"boot_multicons", RB_MULTIPLE},
|
|
{"boot_mute", RB_MUTE},
|
|
{"boot_pause", RB_PAUSE},
|
|
{"boot_serial", RB_SERIAL},
|
|
{"boot_single", RB_SINGLE},
|
|
{"boot_verbose", RB_VERBOSE},
|
|
{NULL, 0}
|
|
};
|
|
|
|
int
|
|
bi_getboothowto(char *kargs)
|
|
{
|
|
char *cp;
|
|
char *curpos, *next, *string;
|
|
int howto;
|
|
int active;
|
|
int i;
|
|
int vidconsole;
|
|
|
|
/* Parse kargs */
|
|
howto = 0;
|
|
if (kargs != NULL) {
|
|
cp = kargs;
|
|
active = 0;
|
|
while (*cp != 0) {
|
|
if (!active && (*cp == '-')) {
|
|
active = 1;
|
|
} else if (active)
|
|
switch (*cp) {
|
|
case 'a':
|
|
howto |= RB_ASKNAME;
|
|
break;
|
|
case 'C':
|
|
howto |= RB_CDROM;
|
|
break;
|
|
case 'd':
|
|
howto |= RB_KDB;
|
|
break;
|
|
case 'D':
|
|
howto |= RB_MULTIPLE;
|
|
break;
|
|
case 'm':
|
|
howto |= RB_MUTE;
|
|
break;
|
|
case 'g':
|
|
howto |= RB_GDB;
|
|
break;
|
|
case 'h':
|
|
howto |= RB_SERIAL;
|
|
break;
|
|
case 'p':
|
|
howto |= RB_PAUSE;
|
|
break;
|
|
case 'r':
|
|
howto |= RB_DFLTROOT;
|
|
break;
|
|
case 's':
|
|
howto |= RB_SINGLE;
|
|
break;
|
|
case 'v':
|
|
howto |= RB_VERBOSE;
|
|
break;
|
|
default:
|
|
active = 0;
|
|
break;
|
|
}
|
|
cp++;
|
|
}
|
|
}
|
|
/* get equivalents from the environment */
|
|
for (i = 0; howto_names[i].ev != NULL; i++)
|
|
if (getenv(howto_names[i].ev) != NULL)
|
|
howto |= howto_names[i].mask;
|
|
|
|
/* Enable selected consoles */
|
|
string = next = strdup(getenv("console"));
|
|
vidconsole = 0;
|
|
while (next != NULL) {
|
|
curpos = strsep(&next, " ,");
|
|
if (*curpos == '\0')
|
|
continue;
|
|
if (!strcmp(curpos, "vidconsole"))
|
|
vidconsole = 1;
|
|
else if (!strcmp(curpos, "comconsole"))
|
|
howto |= RB_SERIAL;
|
|
else if (!strcmp(curpos, "nullconsole"))
|
|
howto |= RB_MUTE;
|
|
}
|
|
|
|
if (vidconsole && (howto & RB_SERIAL))
|
|
howto |= RB_MULTIPLE;
|
|
|
|
/*
|
|
* XXX: Note that until the kernel is ready to respect multiple consoles
|
|
* for the boot messages, the first named console is the primary console
|
|
*/
|
|
if (!strcmp(string, "vidconsole"))
|
|
howto &= ~RB_SERIAL;
|
|
|
|
free(string);
|
|
|
|
return(howto);
|
|
}
|
|
|
|
/*
|
|
* Copy the environment into the load area starting at (addr).
|
|
* Each variable is formatted as <name>=<value>, with a single nul
|
|
* separating each variable, and a double nul terminating the environment.
|
|
*/
|
|
vm_offset_t
|
|
bi_copyenv(vm_offset_t addr)
|
|
{
|
|
struct env_var *ep;
|
|
|
|
/* traverse the environment */
|
|
for (ep = environ; ep != NULL; ep = ep->ev_next) {
|
|
i386_copyin(ep->ev_name, addr, strlen(ep->ev_name));
|
|
addr += strlen(ep->ev_name);
|
|
i386_copyin("=", addr, 1);
|
|
addr++;
|
|
if (ep->ev_value != NULL) {
|
|
i386_copyin(ep->ev_value, addr, strlen(ep->ev_value));
|
|
addr += strlen(ep->ev_value);
|
|
}
|
|
i386_copyin("", addr, 1);
|
|
addr++;
|
|
}
|
|
i386_copyin("", addr, 1);
|
|
addr++;
|
|
return(addr);
|
|
}
|