c2f9d95de5
'three-stage' bootstrap. There are a number of caveats with the code in its current state: - The i386 bootstrap only supports booting from a floppy. - The kernel and kld do not yet know how to deal with the extended information and module summary passed in. - PnP-based autodetection and demand loading of modules is not implemented. - i386 ELF kernel loading is not ready yet. - The i386 bootstrap is loaded via an ugly blockmap. On the alpha, both net- and disk-booting (SRM console machines only) is supported. No blockmaps are used by this code. Obtained from: Parts from the NetBSD/i386 standalone bootstrap.
130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id$
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*/
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/*
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* module function dispatcher, support, etc.
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*
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* XXX need a 'searchmodule' function that takes a name and
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* traverses a search path.
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*/
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#include <stand.h>
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#include <string.h>
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#include "bootstrap.h"
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/* Initially determined from kernel load address */
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static vm_offset_t loadaddr = 0;
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struct loaded_module *loaded_modules = NULL;
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COMMAND_SET(load, "load", "load a kernel or module", command_load);
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static int
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command_load(int argc, char *argv[])
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{
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return(mod_load(argv[1], argc - 2, argv + 2));
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}
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COMMAND_SET(lsmod, "lsmod", "list loaded modules", command_lsmod);
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static int
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command_lsmod(int argc, char *argv[])
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{
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struct loaded_module *am;
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char lbuf[80];
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pager_open();
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for (am = loaded_modules; (am != NULL); am = am->m_next) {
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sprintf(lbuf, " %p: %s (%s, 0x%x)\n",
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am->m_addr, am->m_name, am->m_type, am->m_size);
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pager_output(lbuf);
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if (am->m_args != NULL) {
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pager_output(" args: ");
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pager_output(am->m_args);
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pager_output("\n");
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}
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}
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pager_close();
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return(CMD_OK);
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}
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int
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mod_load(char *name, int argc, char *argv[])
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{
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struct loaded_module *am, *cm;
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int i, err;
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for (i = 0, am = NULL; (module_formats[i] != NULL) && (am == NULL); i++) {
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/* XXX call searchmodule() to search for module (name) */
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if ((err = (module_formats[i]->l_load)(name, loadaddr, &am)) != 0) {
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/* Unknown to this handler? */
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if (err == EFTYPE)
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continue;
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/* Fatal error */
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sprintf(command_errbuf, "can't load module '%s': %s", name, strerror(err));
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return(CMD_ERROR);
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}
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}
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if (am == NULL) {
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sprintf(command_errbuf, "can't work out what to do with '%s'", name);
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return(CMD_ERROR);
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}
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/* where can we put the next one? */
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loadaddr = am->m_addr + am->m_size;
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/* Load was OK, set args */
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am->m_args = unargv(argc, argv);
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/* Append to list of loaded modules */
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am->m_next = NULL;
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if (loaded_modules == NULL) {
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loaded_modules = am;
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} else {
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for (cm = loaded_modules; cm->m_next != NULL; cm = cm->m_next)
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;
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cm->m_next = am;
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}
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return(CMD_OK);
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}
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struct loaded_module *
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mod_findmodule(char *name, char *type)
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{
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struct loaded_module *mp;
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for (mp = loaded_modules; mp != NULL; mp = mp->m_next) {
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if (((name == NULL) || !strcmp(name, mp->m_name)) &&
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((type == NULL) || !strcmp(type, mp->m_type)))
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break;
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}
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return(mp);
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}
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