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/*-
* 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.
*
* $Id: bootinfo.c,v 1.2 1998/09/03 02:10:09 msmith Exp $
*/
#include <sys/reboot.h>
#include <stand.h>
#include "bootstrap.h"
/*
* Return a 'boothowto' value corresponding to the kernel arguments in
* (kargs) and any relevant environment variables.
*/
static struct
{
char *ev;
int mask;
} howto_names[] = {
{"boot_askname", RB_ASKNAME},
{"boot_userconfig", RB_CONFIG},
{"boot_ddb", RB_KDB},
{"boot_gdb", RB_GDB},
{"boot_single", RB_SINGLE},
{"boot_verbose", RB_VERBOSE},
{NULL, 0}
};
int
bi_getboothowto(char *kargs)
{
char *cp;
int howto;
int active;
int i;
/* 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_CONFIG;
break;
case 'd':
howto |= RB_KDB;
break;
case 'g':
howto |= RB_GDB;
break;
case 'h':
howto |= RB_SERIAL;
break;
case 'r':
howto |= RB_DFLTROOT;
break;
case 's':
howto |= RB_SINGLE;
break;
case 'v':
howto |= RB_VERBOSE;
break;
default:
active = 0;
break;
}
active = 0;
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;
if (!strcmp(getenv("console"), "comconsole"))
howto |= RB_SERIAL;
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) {
vpbcopy(ep->ev_name, addr, strlen(ep->ev_name));
addr += strlen(ep->ev_name);
vpbcopy("=", addr, 1);
addr++;
if (ep->ev_value != NULL) {
vpbcopy(ep->ev_value, addr, strlen(ep->ev_value));
addr += strlen(ep->ev_value);
}
vpbcopy("", addr, 1);
addr++;
}
vpbcopy("", addr, 1);
addr++;
}
/*
* Copy module-related data into the load area, where it can be
* used as a directory for loaded modules.
*
* Module data is presented in a self-describing format. Each datum
* is preceeded by a 32-bit identifier and a 32-bit size field.
*
* Currently, the following data are saved:
*
* MOD_NAME (variable) module name (string)
* MOD_TYPE (variable) module type (string)
* MOD_ADDR sizeof(vm_offset_t) module load address
* MOD_SIZE sizeof(size_t) module size
* MOD_METADATA (variable) type-specific metadata
*/
#define MOD_STR(t, a, s) { \
u_int32_t ident = (t << 16) + strlen(s) + 1; \
vpbcopy(&ident, a, sizeof(ident)); \
a += sizeof(ident); \
vpbcopy(s, a, strlen(s) + 1); \
a += strlen(s) + 1; \
}
#define MOD_NAME(a, s) MOD_STR(MODINFO_NAME, a, s)
#define MOD_TYPE(a, s) MOD_STR(MODINFO_TYPE, a, s)
#define MOD_VAR(t, a, s) { \
u_int32_t ident = (t << 16) + sizeof(s); \
vpbcopy(&ident, a, sizeof(ident)); \
a += sizeof(ident); \
vpbcopy(&s, a, sizeof(s)); \
a += sizeof(s); \
}
#define MOD_ADDR(a, s) MOD_VAR(MODINFO_ADDR, a, s)
#define MOD_SIZE(a, s) MOD_VAR(MODINFO_SIZE, a, s)
#define MOD_METADATA(a, mm) { \
u_int32_t ident = ((MODINFO_METADATA | mm->md_type) << 16) + mm->md_size; \
vpbcopy(&ident, a, sizeof(ident)); \
a += sizeof(ident); \
vpbcopy(mm->md_data, a, mm->md_size); \
a += mm->md_size; \
}
#define MOD_END(a) { \
u_int32_t ident = 0; \
vpbcopy(&ident, a, sizeof(ident)); \
a += sizeof(ident); \
vpbcopy(&ident, a, sizeof(ident)); \
a += sizeof(ident); \
}
vm_offset_t
bi_copymodules(vm_offset_t addr)
{
struct loaded_module *mp;
struct module_metadata *md;
/* start with the first module on the list, should be the kernel */
for (mp = mod_findmodule(NULL, NULL); mp != NULL; mp = mp->m_next) {
MOD_NAME(addr, mp->m_name); /* this field must come first */
MOD_TYPE(addr, mp->m_type);
MOD_ADDR(addr, mp->m_addr);
MOD_SIZE(addr, mp->m_size);
for (md = mp->m_metadata; md != NULL; md = md->md_next)
if (!(md->md_type & MODINFOMD_NOCOPY))
MOD_METADATA(addr, md);
}
MOD_END(addr);
return(addr);
}
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