1 /* $NetBSD: exec.c,v 1.59 2014/04/06 19:18:00 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
122 extern struct btinfo_console btinfo_console;
123
124 boot_module_t *boot_modules;
125 bool boot_modules_enabled = true;
126 bool kernel_loaded;
127
128 typedef struct userconf_command {
129 char *uc_text;
130 size_t uc_len;
131 struct userconf_command *uc_next;
132 } userconf_command_t;
133 userconf_command_t *userconf_commands = NULL;
134
135 static struct btinfo_framebuffer btinfo_framebuffer;
136
137 static struct btinfo_modulelist *btinfo_modulelist;
138 static size_t btinfo_modulelist_size;
139 static uint32_t image_end;
140 static char module_base[64] = "/";
141 static int howto;
142
143 static struct btinfo_userconfcommands *btinfo_userconfcommands = NULL;
144 static size_t btinfo_userconfcommands_size = 0;
145
146 static void module_init(const char *);
147 static void module_add_common(const char *, uint8_t);
148
149 static void userconf_init(void);
150
151 void
framebuffer_configure(struct btinfo_framebuffer * fb)152 framebuffer_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
162 void
module_add(char * name)163 module_add(char *name)
164 {
165 return module_add_common(name, BM_TYPE_KMOD);
166 }
167
168 void
splash_add(char * name)169 splash_add(char *name)
170 {
171 return module_add_common(name, BM_TYPE_IMAGE);
172 }
173
174 void
rnd_add(char * name)175 rnd_add(char *name)
176 {
177 return module_add_common(name, BM_TYPE_RND);
178 }
179
180 void
fs_add(char * name)181 fs_add(char *name)
182 {
183 return module_add_common(name, BM_TYPE_FS);
184 }
185
186 static void
module_add_common(const char * name,uint8_t type)187 module_add_common(const 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
217 void
userconf_add(char * cmd)218 userconf_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
257 static int
common_load_kernel(const char * file,u_long * basemem,u_long * extmem,physaddr_t loadaddr,int floppy,u_long marks[MARK_MAX])258 common_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 !defined(__minix) /* this just gives us a cd9660-not-found warning.. */
307 /* If the root fs type is unusual, load its module. */
308 if (fsmod != NULL)
309 module_add_common(fsmod, BM_TYPE_KMOD);
310 #endif /* !defined(__minix) */
311
312 /*
313 * Gather some information for the kernel. Do this after the
314 * "point of no return" to avoid memory leaks.
315 * (but before DOS might be trashed in the XMS case)
316 */
317 #ifdef PASS_BIOSGEOM
318 bi_getbiosgeom();
319 #endif
320 #ifdef PASS_MEMMAP
321 bi_getmemmap();
322 #endif
323
324 #ifdef XMS
325 if (loadaddr != origaddr) {
326 /*
327 * We now have done our last DOS IO, so we may
328 * trash the OS. Copy the data from the temporary
329 * buffer to its real address.
330 */
331 marks[MARK_START] -= loadaddr;
332 marks[MARK_END] -= loadaddr;
333 marks[MARK_SYM] -= loadaddr;
334 marks[MARK_END] -= loadaddr;
335 ppbcopy(loadaddr, origaddr, marks[MARK_END]);
336 }
337 #endif
338 marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) &
339 (-sizeof(int));
340 image_end = marks[MARK_END];
341 kernel_loaded = true;
342
343 return 0;
344 }
345
346 int
exec_netbsd(const char * file,physaddr_t loadaddr,int boothowto,int floppy,void (* callback)(void))347 exec_netbsd(const char *file, physaddr_t loadaddr, int boothowto, int floppy,
348 void (*callback)(void))
349 {
350 uint32_t boot_argv[BOOT_NARGS];
351 u_long marks[MARK_MAX];
352 struct btinfo_symtab btinfo_symtab;
353 u_long extmem;
354 u_long basemem;
355
356 #ifdef DEBUG
357 printf("exec: file=%s loadaddr=0x%lx\n",
358 file ? file : "NULL", loadaddr);
359 #endif
360
361 BI_ALLOC(32); /* ??? */
362
363 BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console));
364
365 howto = boothowto;
366
367 memset(marks, 0, sizeof(marks));
368
369 if (common_load_kernel(file, &basemem, &extmem, loadaddr, floppy, marks))
370 goto out;
371
372 boot_argv[0] = boothowto;
373 boot_argv[1] = 0;
374 boot_argv[2] = vtophys(bootinfo); /* old cyl offset */
375 boot_argv[3] = marks[MARK_END];
376 boot_argv[4] = extmem;
377 boot_argv[5] = basemem;
378
379 /* pull in any modules if necessary */
380 if (boot_modules_enabled) {
381 module_init(file);
382 if (btinfo_modulelist) {
383 BI_ADD(btinfo_modulelist, BTINFO_MODULELIST,
384 btinfo_modulelist_size);
385 }
386 }
387
388 userconf_init();
389 if (btinfo_userconfcommands != NULL)
390 BI_ADD(btinfo_userconfcommands, BTINFO_USERCONFCOMMANDS,
391 btinfo_userconfcommands_size);
392
393 #ifdef DEBUG
394 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY],
395 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]);
396 #endif
397
398 btinfo_symtab.nsym = marks[MARK_NSYM];
399 btinfo_symtab.ssym = marks[MARK_SYM];
400 btinfo_symtab.esym = marks[MARK_END];
401 BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab));
402
403 /* set new video mode if necessary */
404 vbe_commit();
405 BI_ADD(&btinfo_framebuffer, BTINFO_FRAMEBUFFER,
406 sizeof(struct btinfo_framebuffer));
407
408 if (callback != NULL)
409 (*callback)();
410 startprog(marks[MARK_ENTRY], BOOT_NARGS, boot_argv,
411 x86_trunc_page(basemem*1024));
412 panic("exec returned");
413
414 out:
415 BI_FREE();
416 bootinfo = 0;
417 return -1;
418 }
419
420 static void
extract_device(const char * path,char * buf,size_t buflen)421 extract_device(const char *path, char *buf, size_t buflen)
422 {
423 size_t i;
424
425 if (strchr(path, ':') != NULL) {
426 for (i = 0; i < buflen - 2 && path[i] != ':'; i++)
427 buf[i] = path[i];
428 buf[i++] = ':';
429 buf[i] = '\0';
430 } else
431 buf[0] = '\0';
432 }
433
434 static const char *
module_path(boot_module_t * bm,const char * kdev)435 module_path(boot_module_t *bm, const char *kdev)
436 {
437 static char buf[256];
438 char name_buf[256], dev_buf[64];
439 const char *name, *name2, *p;
440
441 name = bm->bm_path;
442 for (name2 = name; *name2; ++name2) {
443 if (*name2 == ' ' || *name2 == '\t') {
444 strlcpy(name_buf, name, sizeof(name_buf));
445 if ((uintptr_t)name2 - (uintptr_t)name < sizeof(name_buf))
446 name_buf[name2 - name] = '\0';
447 name = name_buf;
448 break;
449 }
450 }
451 if ((p = strchr(name, ':')) != NULL) {
452 /* device specified, use it */
453 if (p[1] == '/')
454 snprintf(buf, sizeof(buf), "%s", name);
455 else {
456 p++;
457 extract_device(name, dev_buf, sizeof(dev_buf));
458 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod",
459 dev_buf, module_base, p, p);
460 }
461 } else {
462 /* device not specified; load from kernel device if known */
463 if (name[0] == '/')
464 snprintf(buf, sizeof(buf), "%s%s", kdev, name);
465 else
466 snprintf(buf, sizeof(buf), "%s%s/%s/%s.kmod",
467 kdev, module_base, name, name);
468 }
469
470 return buf;
471 }
472
473 static int
module_open(boot_module_t * bm,int mode,const char * kdev,bool doload)474 module_open(boot_module_t *bm, int mode, const char *kdev, bool doload)
475 {
476 int fd;
477 const char *path;
478
479 /* check the expanded path first */
480 path = module_path(bm, kdev);
481 fd = open(path, mode);
482 if (fd != -1) {
483 if ((howto & AB_SILENT) == 0 && doload)
484 printf("Loading %s ", path);
485 } else {
486 /* now attempt the raw path provided */
487 fd = open(bm->bm_path, mode);
488 if (fd != -1 && (howto & AB_SILENT) == 0 && doload)
489 printf("Loading %s ", bm->bm_path);
490 }
491 if (!doload && fd == -1) {
492 printf("WARNING: couldn't open %s", bm->bm_path);
493 if (strcmp(bm->bm_path, path) != 0)
494 printf(" (%s)", path);
495 printf("\n");
496 }
497 return fd;
498 }
499
500 static void
module_init(const char * kernel_path)501 module_init(const char *kernel_path)
502 {
503 struct bi_modulelist_entry *bi;
504 struct stat st;
505 const char *machine;
506 char kdev[64];
507 char *buf;
508 boot_module_t *bm;
509 ssize_t len;
510 off_t off;
511 int err, fd, nfail = 0;
512
513 extract_device(kernel_path, kdev, sizeof(kdev));
514
515 switch (netbsd_elf_class) {
516 case ELFCLASS32:
517 machine = "i386";
518 break;
519 case ELFCLASS64:
520 machine = "amd64";
521 break;
522 default:
523 machine = "generic";
524 break;
525 }
526 if (netbsd_version / 1000000 % 100 == 99) {
527 /* -current */
528 snprintf(module_base, sizeof(module_base),
529 "/stand/%s/%d.%d.%d/modules", machine,
530 netbsd_version / 100000000,
531 netbsd_version / 1000000 % 100,
532 netbsd_version / 100 % 100);
533 } else if (netbsd_version != 0) {
534 /* release */
535 snprintf(module_base, sizeof(module_base),
536 "/stand/%s/%d.%d/modules", machine,
537 netbsd_version / 100000000,
538 netbsd_version / 1000000 % 100);
539 }
540
541 /* First, see which modules are valid and calculate btinfo size */
542 len = sizeof(struct btinfo_modulelist);
543 for (bm = boot_modules; bm; bm = bm->bm_next) {
544 fd = module_open(bm, 0, kdev, false);
545 if (fd == -1) {
546 bm->bm_len = -1;
547 ++nfail;
548 continue;
549 }
550 err = fstat(fd, &st);
551 if (err == -1 || st.st_size == -1) {
552 printf("WARNING: couldn't stat %s\n", bm->bm_path);
553 close(fd);
554 bm->bm_len = -1;
555 ++nfail;
556 continue;
557 }
558 bm->bm_len = st.st_size;
559 close(fd);
560 len += sizeof(struct bi_modulelist_entry);
561 }
562
563 /* Allocate the module list */
564 btinfo_modulelist = alloc(len);
565 if (btinfo_modulelist == NULL) {
566 printf("WARNING: couldn't allocate module list\n");
567 wait_sec(MODULE_WARNING_SEC);
568 return;
569 }
570 memset(btinfo_modulelist, 0, len);
571 btinfo_modulelist_size = len;
572
573 /* Fill in btinfo structure */
574 buf = (char *)btinfo_modulelist;
575 btinfo_modulelist->num = 0;
576 off = sizeof(struct btinfo_modulelist);
577
578 for (bm = boot_modules; bm; bm = bm->bm_next) {
579 if (bm->bm_len == -1)
580 continue;
581 fd = module_open(bm, 0, kdev, true);
582 if (fd == -1)
583 continue;
584 image_end = (image_end + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
585 len = pread(fd, (void *)(uintptr_t)image_end, SSIZE_MAX);
586 if (len < bm->bm_len) {
587 if ((howto & AB_SILENT) != 0)
588 printf("Loading %s ", bm->bm_path);
589 printf(" FAILED\n");
590 } else {
591 btinfo_modulelist->num++;
592 bi = (struct bi_modulelist_entry *)(buf + off);
593 off += sizeof(struct bi_modulelist_entry);
594 strncpy(bi->path, bm->bm_path, sizeof(bi->path) - 1);
595 bi->base = image_end;
596 bi->len = len;
597 switch (bm->bm_type) {
598 case BM_TYPE_KMOD:
599 bi->type = BI_MODULE_ELF;
600 break;
601 case BM_TYPE_IMAGE:
602 bi->type = BI_MODULE_IMAGE;
603 break;
604 case BM_TYPE_FS:
605 bi->type = BI_MODULE_FS;
606 break;
607 case BM_TYPE_RND:
608 default:
609 /* safest -- rnd checks the sha1 */
610 bi->type = BI_MODULE_RND;
611 break;
612 }
613 if ((howto & AB_SILENT) == 0)
614 printf(" \n");
615 }
616 if (len > 0)
617 image_end += len;
618 close(fd);
619 }
620 btinfo_modulelist->endpa = image_end;
621
622 if (nfail > 0) {
623 printf("WARNING: %d module%s failed to load\n",
624 nfail, nfail == 1 ? "" : "s");
625 #if notyet
626 wait_sec(MODULE_WARNING_SEC);
627 #endif
628 }
629 }
630
631 static void
userconf_init(void)632 userconf_init(void)
633 {
634 size_t count, len;
635 userconf_command_t *uc;
636 char *buf;
637 off_t off;
638
639 /* Calculate the userconf commands list size */
640 count = 0;
641 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next)
642 count++;
643 len = sizeof(*btinfo_userconfcommands) +
644 count * sizeof(struct bi_userconfcommand);
645
646 /* Allocate the userconf commands list */
647 btinfo_userconfcommands = alloc(len);
648 if (btinfo_userconfcommands == NULL) {
649 printf("WARNING: couldn't allocate userconf commands list\n");
650 return;
651 }
652 memset(btinfo_userconfcommands, 0, len);
653 btinfo_userconfcommands_size = len;
654
655 /* Fill in btinfo structure */
656 buf = (char *)btinfo_userconfcommands;
657 off = sizeof(*btinfo_userconfcommands);
658 btinfo_userconfcommands->num = 0;
659 for (uc = userconf_commands; uc != NULL; uc = uc->uc_next) {
660 struct bi_userconfcommand *bi;
661 bi = (struct bi_userconfcommand *)(buf + off);
662 strncpy(bi->text, uc->uc_text, sizeof(bi->text) - 1);
663
664 off += sizeof(*bi);
665 btinfo_userconfcommands->num++;
666 }
667 }
668
669 #if defined(PASS_MEMMAP) && defined(__minix)
670 /*
671 * Construct a memory map for the multiboot info structure, with memory ranges
672 * as reported by the BIOS. If successful, set the HAS_MMAP flag. Code copied
673 * largely from bootinfo_memmap.c.
674 */
675 static void
memmap_init(struct multiboot_info * mbi)676 memmap_init(struct multiboot_info * mbi)
677 {
678 multiboot_memory_map_t *mmap;
679 int buf[5], i, nranges;
680
681 nranges = 0;
682 i = 0;
683 do {
684 if (getmementry(&i, buf))
685 break;
686 nranges++;
687 } while (i);
688
689 if (nranges == 0)
690 return;
691
692 mbi->mmap_length = sizeof(multiboot_memory_map_t) * nranges;
693
694 mmap = alloc(mbi->mmap_length);
695
696 mbi->mmap_addr = vtophys(mmap);
697
698 i = 0;
699 while (nranges-- > 0) {
700 getmementry(&i, buf);
701
702 /* Stupid tricks to deal with alignment issues. */
703 memcpy(&mmap->mm_base_addr, buf, sizeof(buf));
704 mmap->mm_size = sizeof(*mmap) - sizeof(mmap->mm_size);
705 mmap++;
706 }
707
708 mbi->mi_flags |= MULTIBOOT_INFO_HAS_MMAP;
709 }
710 #endif /* PASS_MEMMAP && __minix */
711
712 int
exec_multiboot(const char * file,char * args)713 exec_multiboot(const char *file, char *args)
714 {
715 struct multiboot_info *mbi;
716 struct multiboot_module *mbm;
717 struct bi_modulelist_entry *bim;
718 int i, len;
719 u_long marks[MARK_MAX];
720 u_long extmem;
721 u_long basemem;
722 char *cmdline;
723
724 mbi = alloc(sizeof(struct multiboot_info));
725 mbi->mi_flags = MULTIBOOT_INFO_HAS_MEMORY;
726
727 if (common_load_kernel(file, &basemem, &extmem, 0, 0, marks))
728 goto out;
729
730 mbi->mi_mem_upper = extmem;
731 mbi->mi_mem_lower = basemem;
732
733 if (args) {
734 mbi->mi_flags |= MULTIBOOT_INFO_HAS_CMDLINE;
735 len = strlen(file) + 1 + strlen(args) + 1;
736 cmdline = alloc(len);
737 snprintf(cmdline, len, "%s %s", file, args);
738 mbi->mi_cmdline = (char *) vtophys(cmdline);
739 }
740
741 /* pull in any modules if necessary */
742 if (boot_modules_enabled) {
743 module_init(file);
744 if (btinfo_modulelist) {
745 mbm = alloc(sizeof(struct multiboot_module) *
746 btinfo_modulelist->num);
747
748 bim = (struct bi_modulelist_entry *)
749 (((char *) btinfo_modulelist) +
750 sizeof(struct btinfo_modulelist));
751 for (i = 0; i < btinfo_modulelist->num; i++) {
752 mbm[i].mmo_start = bim->base;
753 mbm[i].mmo_end = bim->base + bim->len;
754 mbm[i].mmo_string = (char *)vtophys(bim->path);
755 mbm[i].mmo_reserved = 0;
756 bim++;
757 }
758 mbi->mi_flags |= MULTIBOOT_INFO_HAS_MODS;
759 mbi->mi_mods_count = btinfo_modulelist->num;
760 mbi->mi_mods_addr = vtophys(mbm);
761 }
762 }
763
764 #if defined(PASS_MEMMAP) && defined(__minix)
765 /*
766 * The MINIX3 kernel needs a full memory map. Without it, it will do
767 * silly things such as overwriting the ACPI tables.
768 */
769 memmap_init(mbi);
770 #endif /* PASS_MEMMAP && __minix */
771
772 #ifdef DEBUG
773 printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[MARK_ENTRY],
774 marks[MARK_NSYM], marks[MARK_SYM], marks[MARK_END]);
775 #endif
776
777
778 #if 0
779 if (btinfo_symtab.nsym) {
780 mbi->mi_flags |= MULTIBOOT_INFO_HAS_ELF_SYMS;
781 mbi->mi_elfshdr_addr = marks[MARK_SYM];
782 btinfo_symtab.nsym = marks[MARK_NSYM];
783 btinfo_symtab.ssym = marks[MARK_SYM];
784 btinfo_symtab.esym = marks[MARK_END];
785 #endif
786
787 multiboot(marks[MARK_ENTRY], vtophys(mbi),
788 x86_trunc_page(mbi->mi_mem_lower*1024));
789 panic("exec returned");
790
791 out:
792 dealloc(mbi, 0);
793 return -1;
794 }
795
796 void
797 x86_progress(const char *fmt, ...)
798 {
799 va_list ap;
800
801 if ((howto & AB_SILENT) != 0)
802 return;
803 va_start(ap, fmt);
804 vprintf(fmt, ap);
805 va_end(ap);
806 }
807