File: [cvs.NetBSD.org] / src / sys / arch / i386 / stand / lib / exec.c (download)
Revision 1.25, Sun May 4 11:00:09 2008 UTC (15 years, 11 months ago) by martin
Branch: MAIN
CVS Tags: yamt-pf42-base2, yamt-nfs-mp-base2, hpcarm-cleanup-nbase Branch point for: wrstuden-revivesa
Changes since 1.24: +1 -3
lines
Remove my personal license, the TNF one is good enough for me.
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/* $NetBSD: exec.c,v 1.25 2008/05/04 11:00:09 martin Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 1982, 1986, 1990, 1993
* The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 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.
*
* @(#)boot.c 8.1 (Berkeley) 6/10/93
*/
/*
* Copyright (c) 1996
* Matthias Drochner. All rights reserved.
* Copyright (c) 1996
* Perry E. Metzger. 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 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.
*
* @(#)boot.c 8.1 (Berkeley) 6/10/93
*/
/*
* starts NetBSD a.out kernel
* needs lowlevel startup from startprog.S
* This is a special version of exec.c to support use of XMS.
*/
#include <sys/param.h>
#include <sys/reboot.h>
#include <lib/libsa/stand.h>
#include <lib/libkern/libkern.h>
#include "loadfile.h"
#include "libi386.h"
#include "bootinfo.h"
#include "bootmod.h"
#ifdef SUPPORT_PS2
#include "biosmca.h"
#endif
#define BOOT_NARGS 6
#ifndef PAGE_SIZE
#define PAGE_SIZE 4096
#endif
extern struct btinfo_console btinfo_console;
boot_module_t *boot_modules;
bool boot_modules_enabled = true;
bool kernel_loaded;
static struct btinfo_modulelist *btinfo_modulelist;
static size_t btinfo_modulelist_size;
static uint32_t image_end;
static void module_init(void);
int
exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto)
{
u_long boot_argv[BOOT_NARGS];
int fd;
u_long marks[MARK_MAX];
struct btinfo_symtab btinfo_symtab;
u_long extmem;
u_long basemem;
#ifdef XMS
u_long xmsmem;
physaddr_t origaddr = loadaddr;
#endif
#ifdef DEBUG
printf("exec: file=%s loadaddr=0x%lx\n",
file ? file : "NULL", loadaddr);
#endif
BI_ALLOC(32); /* ??? */
BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console));
extmem = getextmem();
basemem = getbasemem();
#ifdef XMS
if ((getextmem1() == 0) && (xmsmem = checkxms())) {
u_long kernsize;
/*
* With "CONSERVATIVE_MEMDETECT", extmem is 0 because
* getextmem() is getextmem1(). Without, the "smart"
* methods could fail to report all memory as well.
* xmsmem is a few kB less than the actual size, but
* better than nothing.
*/
if (xmsmem > extmem)
extmem = xmsmem;
/*
* Get the size of the kernel
*/
marks[MARK_START] = loadaddr;
if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1)
goto out;
close(fd);
kernsize = marks[MARK_END];
kernsize = (kernsize + 1023) / 1024;
loadaddr = xmsalloc(kernsize);
if (!loadaddr)
return ENOMEM;
}
#endif
marks[MARK_START] = loadaddr;
if ((fd = loadfile(file, marks, LOAD_KERNEL)) == -1)
goto out;
boot_argv[0] = boothowto;
boot_argv[1] = 0;
boot_argv[2] = vtophys(bootinfo); /* old cyl offset */
/* argv[3] below */
boot_argv[4] = extmem;
boot_argv[5] = basemem;
close(fd);
/*
* Gather some information for the kernel. Do this after the
* "point of no return" to avoid memory leaks.
* (but before DOS might be trashed in the XMS case)
*/
#ifdef PASS_BIOSGEOM
bi_getbiosgeom();
#endif
#ifdef PASS_MEMMAP
bi_getmemmap();
#endif
#ifdef XMS
if (loadaddr != origaddr) {
/*
* We now have done our last DOS IO, so we may
* trash the OS. Copy the data from the temporary
* buffer to its real address.
*/
marks[MARK_START] -= loadaddr;
marks[MARK_END] -= loadaddr;
marks[MARK_SYM] -= loadaddr;
marks[MARK_END] -= loadaddr;
ppbcopy(loadaddr, origaddr, marks[MARK_END]);
}
#endif
marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) &
(-sizeof(int));
boot_argv[3] = marks[MARK_END];
image_end = marks[MARK_END];
kernel_loaded = true;
/* pull in any modules if necessary */
if (boot_modules_enabled) {
module_init();
if (btinfo_modulelist) {
BI_ADD(btinfo_modulelist, BTINFO_MODULELIST,
btinfo_modulelist_size);
}
}
#ifdef DEBUG
printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY],
marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]);
#endif
btinfo_symtab.nsym = marks[MARK_NSYM];
btinfo_symtab.ssym = marks[MARK_SYM];
btinfo_symtab.esym = marks[MARK_END];
BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab));
startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv,
x86_trunc_page(basemem*1024));
panic("exec returned");
out:
BI_FREE();
bootinfo = 0;
return -1;
}
static void
module_init(void)
{
struct bi_modulelist_entry *bi;
struct stat st;
char *buf;
boot_module_t *bm;
size_t len;
off_t off;
int err, fd;
/* First, see which modules are valid and calculate btinfo size */
len = sizeof(struct btinfo_modulelist);
for (bm = boot_modules; bm; bm = bm->bm_next) {
fd = open(bm->bm_path, 0);
if (fd == -1) {
printf("WARNING: couldn't open %s\n", bm->bm_path);
bm->bm_len = -1;
continue;
}
err = fstat(fd, &st);
if (err == -1 || st.st_size == -1) {
printf("WARNING: couldn't stat %s\n", bm->bm_path);
close(fd);
bm->bm_len = -1;
continue;
}
bm->bm_len = st.st_size;
close(fd);
len += sizeof(struct bi_modulelist_entry);
}
/* Allocate the module list */
btinfo_modulelist = alloc(len);
if (btinfo_modulelist == NULL) {
printf("WARNING: couldn't allocate module list\n");
return;
}
memset(btinfo_modulelist, 0, len);
btinfo_modulelist_size = len;
/* Fill in btinfo structure */
buf = (char *)btinfo_modulelist;
btinfo_modulelist->num = 0;
off = sizeof(struct btinfo_modulelist);
for (bm = boot_modules; bm; bm = bm->bm_next) {
if (bm->bm_len == -1)
continue;
printf("Loading %s ", bm->bm_path);
fd = open(bm->bm_path, 0);
if (fd == -1) {
printf("ERROR: couldn't open %s\n", bm->bm_path);
continue;
}
image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
len = pread(fd, (void *)image_end, SSIZE_MAX);
if (len < bm->bm_len) {
printf(" FAILED\n");
} else {
btinfo_modulelist->num++;
bi = (struct bi_modulelist_entry *)(buf + off);
off += sizeof(struct bi_modulelist_entry);
strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1);
bi->base = image_end;
bi->len = len;
bi->type = BI_MODULE_ELF;
printf(" \n");
}
if (len > 0)
image_end += len;
close(fd);
}
btinfo_modulelist->endpa = image_end;
}