exec.c revision 1.55
1/*	$NetBSD: exec.c,v 1.55 2013/11/27 18:29:45 jakllsch Exp $	 */
2
3/*-
4 * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/*
30 * Copyright (c) 1982, 1986, 1990, 1993
31 *	The Regents of the University of California.  All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 *    notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 *    notice, this list of conditions and the following disclaimer in the
40 *    documentation and/or other materials provided with the distribution.
41 * 3. Neither the name of the University nor the names of its contributors
42 *    may be used to endorse or promote products derived from this software
43 *    without specific prior written permission.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * SUCH DAMAGE.
56 *
57 * 	@(#)boot.c	8.1 (Berkeley) 6/10/93
58 */
59
60/*
61 * Copyright (c) 1996
62 *	Matthias Drochner.  All rights reserved.
63 * Copyright (c) 1996
64 * 	Perry E. Metzger.  All rights reserved.
65 *
66 * Redistribution and use in source and binary forms, with or without
67 * modification, are permitted provided that the following conditions
68 * are met:
69 * 1. Redistributions of source code must retain the above copyright
70 *    notice, this list of conditions and the following disclaimer.
71 * 2. Redistributions in binary form must reproduce the above copyright
72 *    notice, this list of conditions and the following disclaimer in the
73 *    documentation and/or other materials provided with the distribution.
74 *
75 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
76 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
77 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
78 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
79 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
80 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
81 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
82 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
83 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
84 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
85 * SUCH DAMAGE.
86 *
87 * 	@(#)boot.c	8.1 (Berkeley) 6/10/93
88 */
89
90/*
91 * starts NetBSD a.out kernel
92 * needs lowlevel startup from startprog.S
93 * This is a special version of exec.c to support use of XMS.
94 */
95
96#include <sys/param.h>
97#include <sys/reboot.h>
98#include <sys/reboot.h>
99
100#include <i386/multiboot.h>
101
102#include <lib/libsa/stand.h>
103#include <lib/libkern/libkern.h>
104
105#include "loadfile.h"
106#include "libi386.h"
107#include "bootinfo.h"
108#include "bootmod.h"
109#include "vbe.h"
110#ifdef SUPPORT_PS2
111#include "biosmca.h"
112#endif
113
114#define BOOT_NARGS	6
115
116#ifndef	PAGE_SIZE
117#define	PAGE_SIZE	4096
118#endif
119
120#define MODULE_WARNING_SEC	5
121
122extern struct btinfo_console btinfo_console;
123
124boot_module_t *boot_modules;
125bool boot_modules_enabled = true;
126bool kernel_loaded;
127
128typedef struct userconf_command {
129	char *uc_text;
130	size_t uc_len;
131	struct userconf_command *uc_next;
132} userconf_command_t;
133userconf_command_t *userconf_commands = NULL;
134
135static struct btinfo_framebuffer btinfo_framebuffer;
136
137static struct btinfo_modulelist *btinfo_modulelist;
138static size_t btinfo_modulelist_size;
139static uint32_t image_end;
140static char module_base[64] = "/";
141static int howto;
142
143static struct btinfo_userconfcommands *btinfo_userconfcommands = NULL;
144static size_t btinfo_userconfcommands_size = 0;
145
146static void	module_init(const char *);
147static void	module_add_common(char *, uint8_t);
148
149static void	userconf_init(void);
150
151void
152framebuffer_configure(struct btinfo_framebuffer *fb)
153{
154	if (fb)
155		btinfo_framebuffer = *fb;
156	else {
157		btinfo_framebuffer.physaddr = 0;
158		btinfo_framebuffer.flags = 0;
159	}
160}
161
162void
163module_add(char *name)
164{
165	return module_add_common(name, BM_TYPE_KMOD);
166}
167
168void
169splash_add(char *name)
170{
171	return module_add_common(name, BM_TYPE_IMAGE);
172}
173
174void
175rnd_add(char *name)
176{
177	return module_add_common(name, BM_TYPE_RND);
178}
179
180void
181fs_add(char *name)
182{
183	return module_add_common(name, BM_TYPE_FS);
184}
185
186static void
187module_add_common(char *name, uint8_t type)
188{
189	boot_module_t *bm, *bmp;
190	size_t len;
191	char *str;
192
193	while (*name == ' ' || *name == '\t')
194		++name;
195
196	bm = alloc(sizeof(boot_module_t));
197	len = strlen(name) + 1;
198	str = alloc(len);
199	if (bm == NULL || str == NULL) {
200		printf("couldn't allocate module\n");
201		return;
202	}
203	memcpy(str, name, len);
204	bm->bm_path = str;
205	bm->bm_next = NULL;
206	bm->bm_type = type;
207	if (boot_modules == NULL)
208		boot_modules = bm;
209	else {
210		for (bmp = boot_modules; bmp->bm_next;
211		    bmp = bmp->bm_next)
212			;
213		bmp->bm_next = bm;
214	}
215}
216
217void
218userconf_add(char *cmd)
219{
220	userconf_command_t *uc;
221	size_t len;
222	char *text;
223
224	while (*cmd == ' ' || *cmd == '\t')
225		++cmd;
226
227	uc = alloc(sizeof(*uc));
228	if (uc == NULL) {
229		printf("couldn't allocate command\n");
230		return;
231	}
232
233	len = strlen(cmd) + 1;
234	text = alloc(len);
235	if (text == NULL) {
236		dealloc(uc, sizeof(*uc));
237		printf("couldn't allocate command\n");
238		return;
239	}
240	memcpy(text, cmd, len);
241
242	uc->uc_text = text;
243	uc->uc_len = len;
244	uc->uc_next = NULL;
245
246	if (userconf_commands == NULL)
247		userconf_commands = uc;
248	else {
249		userconf_command_t *ucp;
250		for (ucp = userconf_commands; ucp->uc_next != NULL;
251		     ucp = ucp->uc_next)
252			;
253		ucp->uc_next = uc;
254	}
255}
256
257static int
258common_load_kernel(const char *file, u_long *basemem, u_long *extmem,
259    physaddr_t loadaddr, int floppy, u_long marks[MARK_MAX])
260{
261	int fd;
262#ifdef XMS
263	u_long		xmsmem;
264	physaddr_t	origaddr = loadaddr;
265#endif
266
267	*extmem = getextmem();
268	*basemem = getbasemem();
269
270#ifdef XMS
271	if ((getextmem1() == 0) && (xmsmem = checkxms())) {
272	        u_long kernsize;
273
274		/*
275		 * With "CONSERVATIVE_MEMDETECT", extmem is 0 because
276		 *  getextmem() is getextmem1(). Without, the "smart"
277		 *  methods could fail to report all memory as well.
278		 * xmsmem is a few kB less than the actual size, but
279		 *  better than nothing.
280		 */
281		if (xmsmem > *extmem)
282			*extmem = xmsmem;
283		/*
284		 * Get the size of the kernel
285		 */
286		marks[MARK_START] = loadaddr;
287		if ((fd = loadfile(file, marks, COUNT_KERNEL)) == -1)
288			return EIO;
289		close(fd);
290
291		kernsize = marks[MARK_END];
292		kernsize = (kernsize + 1023) / 1024;
293
294		loadaddr = xmsalloc(kernsize);
295		if (!loadaddr)
296			return ENOMEM;
297	}
298#endif
299	marks[MARK_START] = loadaddr;
300	if ((fd = loadfile(file, marks,
301	    LOAD_KERNEL & ~(floppy ? LOAD_BACKWARDS : 0))) == -1)
302		return EIO;
303
304	close(fd);
305
306	/* If the root fs type is unusual, load its module. */
307	if (fsmod != NULL)
308		module_add(fsmod);
309
310	/*
311	 * Gather some information for the kernel. Do this after the
312	 * "point of no return" to avoid memory leaks.
313	 * (but before DOS might be trashed in the XMS case)
314	 */
315#ifdef PASS_BIOSGEOM
316	bi_getbiosgeom();
317#endif
318#ifdef PASS_MEMMAP
319	bi_getmemmap();
320#endif
321
322#ifdef XMS
323	if (loadaddr != origaddr) {
324		/*
325		 * We now have done our last DOS IO, so we may
326		 * trash the OS. Copy the data from the temporary
327		 * buffer to its real address.
328		 */
329		marks[MARK_START] -= loadaddr;
330		marks[MARK_END] -= loadaddr;
331		marks[MARK_SYM] -= loadaddr;
332		marks[MARK_END] -= loadaddr;
333		ppbcopy(loadaddr, origaddr, marks[MARK_END]);
334	}
335#endif
336	marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) &
337	    (-sizeof(int));
338	image_end = marks[MARK_END];
339	kernel_loaded = true;
340
341	return 0;
342}
343
344int
345exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto, int floppy,
346	    void (*callback)(void))
347{
348	uint32_t	boot_argv[BOOT_NARGS];
349	u_long		marks[MARK_MAX];
350	struct btinfo_symtab btinfo_symtab;
351	u_long		extmem;
352	u_long		basemem;
353
354#ifdef	DEBUG
355	printf("exec: file=%s loadaddr=0x%lx\n",
356	       file ? file : "NULL", loadaddr);
357#endif
358
359	BI_ALLOC(32); /* ??? */
360
361	BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console));
362
363	howto = boothowto;
364
365	if (common_load_kernel(file, &basemem, &extmem, loadaddr, floppy, marks))
366		goto out;
367
368	boot_argv[0] = boothowto;
369	boot_argv[1] = 0;
370	boot_argv[2] = vtophys(bootinfo);	/* old cyl offset */
371	boot_argv[3] = marks[MARK_END];
372	boot_argv[4] = extmem;
373	boot_argv[5] = basemem;
374
375	/* pull in any modules if necessary */
376	if (boot_modules_enabled) {
377		module_init(file);
378		if (btinfo_modulelist) {
379			BI_ADD(btinfo_modulelist, BTINFO_MODULELIST,
380			    btinfo_modulelist_size);
381		}
382	}
383
384	userconf_init();
385	if (btinfo_userconfcommands != NULL)
386		BI_ADD(btinfo_userconfcommands, BTINFO_USERCONFCOMMANDS,
387	btinfo_userconfcommands_size);
388
389#ifdef DEBUG
390	printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY],
391	    marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]);
392#endif
393
394	btinfo_symtab.nsym = marks[MARK_NSYM];
395	btinfo_symtab.ssym = marks[MARK_SYM];
396	btinfo_symtab.esym = marks[MARK_END];
397	BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab));
398
399	/* set new video mode if necessary */
400	vbe_commit();
401	BI_ADD(&btinfo_framebuffer, BTINFO_FRAMEBUFFER,
402	    sizeof(struct btinfo_framebuffer));
403
404	if (callback != NULL)
405		(*callback)();
406	startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv,
407		  x86_trunc_page(basemem*1024));
408	panic("exec returned");
409
410out:
411	BI_FREE();
412	bootinfo = 0;
413	return -1;
414}
415
416static void
417extract_device(const char *path, char *buf, size_t buflen)
418{
419	int i;
420
421	if (strchr(path, ':') != NULL) {
422		for (i = 0; i < buflen - 2 && path[i] != ':'; i++)
423			buf[i] = path[i];
424		buf[i++] = ':';
425		buf[i] = '\0';
426	} else
427		buf[0] = '\0';
428}
429
430static const char *
431module_path(boot_module_t *bm, const char *kdev)
432{
433	static char buf[256];
434	char name_buf[256], dev_buf[64];
435	const char *name, *name2, *p;
436
437	name = bm->bm_path;
438	for (name2 = name; *name2; ++name2) {
439		if (*name2 == ' ' || *name2 == '\t') {
440			strlcpy(name_buf, name, sizeof(name_buf));
441			if (name2 - name < sizeof(name_buf))
442				name_buf[name2 - name] = '\0';
443			name = name_buf;
444			break;
445		}
446	}
447	if ((p = strchr(name, ':')) != NULL) {
448		/* device specified, use it */
449		if (p[1] == '/')
450			snprintf(buf, sizeof(buf), "%s", name);
451		else {
452			p++;
453			extract_device(name, dev_buf, sizeof(dev_buf));
454			snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod",
455			    dev_buf, module_base, p, p);
456		}
457	} else {
458		/* device not specified; load from kernel device if known */
459 		if (name[0] == '/')
460			snprintf(buf, sizeof(buf), "%s%s", kdev, name);
461		else
462			snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod",
463			    kdev, module_base, name, name);
464	}
465
466	return buf;
467}
468
469static int
470module_open(boot_module_t *bm, int mode, const char *kdev, bool doload)
471{
472	int fd;
473	const char *path;
474
475	/* check the expanded path first */
476	path = module_path(bm, kdev);
477	fd = open(path, mode);
478	if (fd != -1) {
479		if ((howto & AB_SILENT) == 0 && doload)
480			printf("Loading %s ", path);
481	} else {
482		/* now attempt the raw path provided */
483		fd = open(bm->bm_path, mode);
484		if (fd != -1 && (howto & AB_SILENT) == 0 && doload)
485			printf("Loading %s ", bm->bm_path);
486	}
487	if (!doload && fd == -1) {
488		printf("WARNING: couldn't open %s", bm->bm_path);
489		if (strcmp(bm->bm_path, path) != 0)
490			printf(" (%s)", path);
491		printf("\n");
492	}
493	return fd;
494}
495
496static void
497module_init(const char *kernel_path)
498{
499	struct bi_modulelist_entry *bi;
500	struct stat st;
501	const char *machine;
502	char kdev[64];
503	char *buf;
504	boot_module_t *bm;
505	size_t len;
506	off_t off;
507	int err, fd, nfail = 0;
508
509	extract_device(kernel_path, kdev, sizeof(kdev));
510
511	switch (netbsd_elf_class) {
512	case ELFCLASS32:
513		machine = "i386";
514		break;
515	case ELFCLASS64:
516		machine = "amd64";
517		break;
518	default:
519		machine = "generic";
520		break;
521	}
522	if (netbsd_version / 1000000 % 100 == 99) {
523		/* -current */
524		snprintf(module_base, sizeof(module_base),
525		    "/stand/%s/%d.%d.%d/modules", machine,
526		    netbsd_version / 100000000,
527		    netbsd_version / 1000000 % 100,
528		    netbsd_version / 100 % 100);
529	} else if (netbsd_version != 0) {
530		/* release */
531		snprintf(module_base, sizeof(module_base),
532		    "/stand/%s/%d.%d/modules", machine,
533		    netbsd_version / 100000000,
534		    netbsd_version / 1000000 % 100);
535	}
536
537	/* First, see which modules are valid and calculate btinfo size */
538	len = sizeof(struct btinfo_modulelist);
539	for (bm = boot_modules; bm; bm = bm->bm_next) {
540		fd = module_open(bm, 0, kdev, false);
541		if (fd == -1) {
542			bm->bm_len = -1;
543			++nfail;
544			continue;
545		}
546		err = fstat(fd, &st);
547		if (err == -1 || st.st_size == -1) {
548			printf("WARNING: couldn't stat %s\n", bm->bm_path);
549			close(fd);
550			bm->bm_len = -1;
551			++nfail;
552			continue;
553		}
554		bm->bm_len = st.st_size;
555		close(fd);
556		len += sizeof(struct bi_modulelist_entry);
557	}
558
559	/* Allocate the module list */
560	btinfo_modulelist = alloc(len);
561	if (btinfo_modulelist == NULL) {
562		printf("WARNING: couldn't allocate module list\n");
563		wait_sec(MODULE_WARNING_SEC);
564		return;
565	}
566	memset(btinfo_modulelist, 0, len);
567	btinfo_modulelist_size = len;
568
569	/* Fill in btinfo structure */
570	buf = (char *)btinfo_modulelist;
571	btinfo_modulelist->num = 0;
572	off = sizeof(struct btinfo_modulelist);
573
574	for (bm = boot_modules; bm; bm = bm->bm_next) {
575		if (bm->bm_len == -1)
576			continue;
577		fd = module_open(bm, 0, kdev, true);
578		if (fd == -1)
579			continue;
580		image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
581		len = pread(fd, (void *)(uintptr_t)image_end, SSIZE_MAX);
582		if (len < bm->bm_len) {
583			if ((howto & AB_SILENT) != 0)
584				printf("Loading %s ", bm->bm_path);
585			printf(" FAILED\n");
586		} else {
587			btinfo_modulelist->num++;
588			bi = (struct bi_modulelist_entry *)(buf + off);
589			off += sizeof(struct bi_modulelist_entry);
590			strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1);
591			bi->base = image_end;
592			bi->len = len;
593			switch (bm->bm_type) {
594			    case BM_TYPE_KMOD:
595				bi->type = BI_MODULE_ELF;
596				break;
597			    case BM_TYPE_IMAGE:
598				bi->type = BI_MODULE_IMAGE;
599				break;
600			    case BM_TYPE_FS:
601				bi->type = BI_MODULE_FS;
602				break;
603			    case BM_TYPE_RND:
604			    default:
605				/* safest -- rnd checks the sha1 */
606				bi->type = BI_MODULE_RND;
607				break;
608			}
609			if ((howto & AB_SILENT) == 0)
610				printf(" \n");
611		}
612		if (len > 0)
613			image_end += len;
614		close(fd);
615	}
616	btinfo_modulelist->endpa = image_end;
617
618	if (nfail > 0) {
619		printf("WARNING: %d module%s failed to load\n",
620		    nfail, nfail == 1 ? "" : "s");
621#if notyet
622		wait_sec(MODULE_WARNING_SEC);
623#endif
624	}
625}
626
627static void
628userconf_init(void)
629{
630	size_t count, len;
631	userconf_command_t *uc;
632	char *buf;
633	off_t off;
634
635	/* Calculate the userconf commands list size */
636	count = 0;
637	for (uc = userconf_commands; uc != NULL; uc = uc->uc_next)
638		count++;
639	len = sizeof(*btinfo_userconfcommands) +
640	      count * sizeof(struct bi_userconfcommand);
641
642	/* Allocate the userconf commands list */
643	btinfo_userconfcommands = alloc(len);
644	if (btinfo_userconfcommands == NULL) {
645		printf("WARNING: couldn't allocate userconf commands list\n");
646		return;
647	}
648	memset(btinfo_userconfcommands, 0, len);
649	btinfo_userconfcommands_size = len;
650
651	/* Fill in btinfo structure */
652	buf = (char *)btinfo_userconfcommands;
653	off = sizeof(*btinfo_userconfcommands);
654	btinfo_userconfcommands->num = 0;
655	for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) {
656		struct bi_userconfcommand *bi;
657		bi = (struct bi_userconfcommand *)(buf + off);
658		strncpy(bi->text, uc->uc_text, sizeof(bi->text) - 1);
659
660		off += sizeof(*bi);
661		btinfo_userconfcommands->num++;
662	}
663}
664
665int
666exec_multiboot(const char *file, char *args)
667{
668	struct multiboot_info *mbi;
669	struct multiboot_module *mbm;
670	struct bi_modulelist_entry *bim;
671	int		i, len;
672	u_long		marks[MARK_MAX];
673	u_long		extmem;
674	u_long		basemem;
675	char		*cmdline;
676
677	mbi = alloc(sizeof(struct multiboot_info));
678	mbi->mi_flags = MULTIBOOT_INFO_HAS_MEMORY;
679
680	if (common_load_kernel(file, &basemem, &extmem, 0, 0, marks))
681		goto out;
682
683	mbi->mi_mem_upper = extmem;
684	mbi->mi_mem_lower = basemem;
685
686	if (args) {
687		mbi->mi_flags |= MULTIBOOT_INFO_HAS_CMDLINE;
688		len = strlen(file) + 1 + strlen(args) + 1;
689		cmdline = alloc(len);
690		snprintf(cmdline, len, "%s %s", file, args);
691		mbi->mi_cmdline = (char *) vtophys(cmdline);
692	}
693
694	/* pull in any modules if necessary */
695	if (boot_modules_enabled) {
696		module_init(file);
697		if (btinfo_modulelist) {
698			mbm = alloc(sizeof(struct multiboot_module) *
699					   btinfo_modulelist->num);
700
701			bim = (struct bi_modulelist_entry *)
702			  (((char *) btinfo_modulelist) +
703			   sizeof(struct btinfo_modulelist));
704			for (i = 0; i < btinfo_modulelist->num; i++) {
705				mbm[i].mmo_start = bim->base;
706				mbm[i].mmo_end = bim->base + bim->len;
707				mbm[i].mmo_string = (char *)vtophys(bim->path);
708				mbm[i].mmo_reserved = 0;
709				bim++;
710			}
711			mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS;
712			mbi->mi_mods_count = btinfo_modulelist->num;
713			mbi->mi_mods_addr = vtophys(mbm);
714		}
715	}
716
717#ifdef DEBUG
718	printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY],
719	    marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]);
720#endif
721
722
723#if 0
724	if (btinfo_symtab.nsym) {
725		mbi->mi_flags |= MULTIBOOT_INFO_HAS_ELF_SYMS;
726		mbi->mi_elfshdr_addr = marks[MARK_SYM];
727	btinfo_symtab.nsym = marks[MARK_NSYM];
728	btinfo_symtab.ssym = marks[MARK_SYM];
729	btinfo_symtab.esym = marks[MARK_END];
730#endif
731
732	multiboot(marks[MARK_ENTRY], vtophys(mbi),
733		  x86_trunc_page(mbi->mi_mem_lower*1024));
734	panic("exec returned");
735
736out:
737        dealloc(mbi, 0);
738	return -1;
739}
740
741void
742x86_progress(const char *fmt, ...)
743{
744	va_list ap;
745
746	if ((howto & AB_SILENT) != 0)
747		return;
748	va_start(ap, fmt);
749	vprintf(fmt, ap);
750	va_end(ap);
751}
752