2 * Copyright (c) 1998 Robert Nordier
4 * Copyright (c) 2001 Robert Drehmel
7 * Redistribution and use in source and binary forms are freely
8 * permitted provided that the above copyright notice and this
9 * paragraph and the following disclaimer are duplicated in all
12 * This software is provided "AS IS" and without any express or
13 * implied warranties, including, without limitation, the implied
14 * warranties of merchantability and fitness for a particular
18 #include <sys/cdefs.h>
19 __FBSDID("$FreeBSD$");
21 #include <sys/param.h>
22 #include <sys/dirent.h>
23 #include <machine/elf.h>
24 #include <machine/stdarg.h>
26 #define _PATH_LOADER "/boot/loader"
27 #define _PATH_KERNEL "/boot/kernel/kernel"
29 #define BSIZEMAX 16384
31 typedef int putc_func_t(char c, void *arg);
32 typedef int32_t ofwh_t;
40 static const char digits[] = "0123456789abcdef";
42 static char bootpath[128];
43 static char bootargs[128];
45 static ofwh_t bootdev;
49 static char blkbuf[BSIZEMAX];
50 static unsigned int fsblks;
52 static uint32_t fs_off;
54 int main(int ac, char **av);
56 static void exit(int) __dead2;
57 static void load(const char *);
58 static int dskread(void *, u_int64_t, int);
60 static void usage(void);
62 static void bcopy(const void *src, void *dst, size_t len);
63 static void bzero(void *b, size_t len);
65 static int domount(const char *device, int quiet);
67 static void panic(const char *fmt, ...) __dead2;
68 static int printf(const char *fmt, ...);
69 static int putchar(char c, void *arg);
70 static int vprintf(const char *fmt, va_list ap);
71 static int vsnprintf(char *str, size_t sz, const char *fmt, va_list ap);
73 static int __printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap);
74 static int __putc(char c, void *arg);
75 static int __puts(const char *s, putc_func_t *putc, void *arg);
76 static int __sputc(char c, void *arg);
77 static char *__uitoa(char *buf, u_int val, int base);
78 static char *__ultoa(char *buf, u_long val, int base);
80 void __syncicache(void *, int);
83 * Open Firmware interface functions
85 typedef u_int32_t ofwcell_t;
86 typedef u_int32_t u_ofwh_t;
87 typedef int (*ofwfp_t)(void *);
88 ofwfp_t ofw; /* the prom Open Firmware entry */
91 void ofw_init(void *, int, int (*)(void *), char *, int);
92 static ofwh_t ofw_finddevice(const char *);
93 static ofwh_t ofw_open(const char *);
94 static int ofw_close(ofwh_t);
95 static int ofw_getprop(ofwh_t, const char *, void *, size_t);
96 static int ofw_setprop(ofwh_t, const char *, void *, size_t);
97 static int ofw_read(ofwh_t, void *, size_t);
98 static int ofw_write(ofwh_t, const void *, size_t);
99 static int ofw_claim(void *virt, size_t len, u_int align);
100 static int ofw_seek(ofwh_t, u_int64_t);
101 static void ofw_exit(void) __dead2;
104 ofwh_t stdinh, stdouth;
116 addi %r1,%r1,stack@l \n\
117 addi %r1,%r1,8192 \n\
123 ofw_init(void *vpd, int res, int (*openfirm)(void *), char *arg, int argl)
131 chosenh = ofw_finddevice("/chosen");
132 ofw_getprop(chosenh, "stdin", &stdinh, sizeof(stdinh));
133 ofw_getprop(chosenh, "stdout", &stdouth, sizeof(stdouth));
134 ofw_getprop(chosenh, "bootargs", bootargs, sizeof(bootargs));
135 ofw_getprop(chosenh, "bootpath", bootpath, sizeof(bootpath));
137 bootargs[sizeof(bootargs) - 1] = '\0';
138 bootpath[sizeof(bootpath) - 1] = '\0';
152 while (*p == ' ' && *p != '\0')
154 if (*p == '\0' || ac >= 16)
157 while (*p != ' ' && *p != '\0')
167 ofw_finddevice(const char *name)
170 (ofwcell_t)"finddevice",
178 printf("ofw_finddevice: name=\"%s\"\n", name);
185 ofw_getprop(ofwh_t ofwh, const char *name, void *buf, size_t len)
188 (ofwcell_t)"getprop",
199 printf("ofw_getprop: ofwh=0x%x buf=%p len=%u\n",
207 ofw_setprop(ofwh_t ofwh, const char *name, void *buf, size_t len)
210 (ofwcell_t)"setprop",
221 printf("ofw_setprop: ofwh=0x%x buf=%p len=%u\n",
229 ofw_open(const char *path)
240 printf("ofw_open: path=\"%s\"\n", path);
247 ofw_close(ofwh_t devh)
257 printf("ofw_close: devh=0x%x\n", devh);
264 ofw_claim(void *virt, size_t len, u_int align)
278 printf("ofw_claim: virt=%p len=%u\n", virt, len);
286 ofw_read(ofwh_t devh, void *buf, size_t len)
299 printf("ofw_read: devh=0x%x buf=%p len=%u\n", devh, buf, len);
306 ofw_write(ofwh_t devh, const void *buf, size_t len)
319 printf("ofw_write: devh=0x%x buf=%p len=%u\n", devh, buf, len);
326 ofw_seek(ofwh_t devh, u_int64_t off)
339 printf("ofw_seek: devh=0x%x off=0x%lx\n", devh, off);
350 args[0] = (ofwcell_t)"exit";
359 bcopy(const void *src, void *dst, size_t len)
369 memcpy(void *dst, const void *src, size_t len)
371 bcopy(src, dst, len);
375 bzero(void *b, size_t len)
384 strcmp(const char *s1, const char *s2)
386 for (; *s1 == *s2 && *s1; s1++, s2++)
388 return ((u_char)*s1 - (u_char)*s2);
394 main(int ac, char **av)
397 char bootpath_full[255];
401 for (i = 0; i < ac; i++) {
415 printf(" \n>> FreeBSD/powerpc Open Firmware boot block\n"
417 " Boot loader: %s\n", bootpath, path);
420 while (bootpath[len] != '\0') len++;
422 memcpy(bootpath_full,bootpath,len+1);
424 if (bootpath_full[len-1] == ':') {
425 for (i = 0; i < 16; i++) {
427 bootpath_full[len] = i + '0';
428 bootpath_full[len+1] = '\0';
430 bootpath_full[len] = '1';
431 bootpath_full[len+1] = i - 10 + '0';
432 bootpath_full[len+2] = '\0';
435 if (domount(bootpath_full,1) >= 0)
445 if (domount(bootpath_full,0) == -1)
449 printf(" Boot volume: %s\n",bootpath_full);
450 ofw_setprop(chosenh, "bootargs", bootpath_full, len+2);
459 printf("usage: boot device [/path/to/loader]\n");
470 static struct dmadat __dmadat;
473 domount(const char *device, int quiet)
477 if ((bootdev = ofw_open(device)) == -1) {
478 printf("domount: can't open device\n");
481 if (fsread(0, NULL, 0)) {
483 printf("domount: can't read superblock\n");
490 load(const char *fname)
498 if ((ino = lookup(fname)) == 0) {
499 printf("File %s not found\n", fname);
502 if (fsread(ino, &eh, sizeof(eh)) != sizeof(eh)) {
503 printf("Can't read elf header\n");
507 printf("Not an ELF file\n");
510 for (i = 0; i < eh.e_phnum; i++) {
511 fs_off = eh.e_phoff + i * eh.e_phentsize;
512 if (fsread(ino, &ph, sizeof(ph)) != sizeof(ph)) {
513 printf("Can't read program header %d\n", i);
516 if (ph.p_type != PT_LOAD)
518 fs_off = ph.p_offset;
519 p = (caddr_t)ph.p_vaddr;
520 ofw_claim(p,(ph.p_filesz > ph.p_memsz) ?
521 ph.p_filesz : ph.p_memsz,0);
522 if (fsread(ino, p, ph.p_filesz) != ph.p_filesz) {
523 printf("Can't read content of section %d\n", i);
526 if (ph.p_filesz != ph.p_memsz)
527 bzero(p + ph.p_filesz, ph.p_memsz - ph.p_filesz);
528 __syncicache(p, ph.p_memsz);
531 (*(void (*)(void *, int, ofwfp_t, char *, int))eh.e_entry)(NULL, 0,
536 dskread(void *buf, u_int64_t lba, int nblk)
539 * The Open Firmware should open the correct partition for us.
540 * That means, if we read from offset zero on an open instance handle,
541 * we should read from offset zero of that partition.
543 ofw_seek(bootdev, lba * DEV_BSIZE);
544 ofw_read(bootdev, buf, nblk * DEV_BSIZE);
549 panic(const char *fmt, ...)
555 vsnprintf(buf, sizeof buf, fmt, ap);
556 printf("panic: %s\n", buf);
563 printf(const char *fmt, ...)
568 /* Don't annoy the user as we probe for partitions */
569 if (strcmp(fmt,"Not ufs\n") == 0)
573 ret = vprintf(fmt, ap);
579 putchar(char c, void *arg)
585 ofw_write(stdouth, &buf, 1);
588 ofw_write(stdouth, &buf, 1);
593 vprintf(const char *fmt, va_list ap)
597 ret = __printf(fmt, putchar, 0, ap);
602 vsnprintf(char *str, size_t sz, const char *fmt, va_list ap)
610 ret = __printf(fmt, __sputc, &sp, ap);
615 __printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap)
617 char buf[(sizeof(long) * 8) + 1];
628 nbuf = &buf[sizeof buf - 1];
630 while ((c = *fmt++) != 0) {
638 reswitch: c = *fmt++;
644 ret += putc('%', arg);
652 ui = (u_int)va_arg(ap, int);
655 ret += putc('-', arg);
657 s = __uitoa(nbuf, ui, 10);
659 ul = (u_long)va_arg(ap, long);
662 ret += putc('-', arg);
664 s = __ultoa(nbuf, ul, 10);
666 ret += __puts(s, putc, arg);
673 ui = (u_int)va_arg(ap, u_int);
674 s = __uitoa(nbuf, ui, 8);
676 ul = (u_long)va_arg(ap, u_long);
677 s = __ultoa(nbuf, ul, 8);
679 ret += __puts(s, putc, arg);
682 ul = (u_long)va_arg(ap, void *);
683 s = __ultoa(nbuf, ul, 16);
684 ret += __puts("0x", putc, arg);
685 ret += __puts(s, putc, arg);
688 s = va_arg(ap, char *);
689 ret += __puts(s, putc, arg);
693 ui = va_arg(ap, u_int);
694 s = __uitoa(nbuf, ui, 10);
696 ul = va_arg(ap, u_long);
697 s = __ultoa(nbuf, ul, 10);
699 ret += __puts(s, putc, arg);
703 ui = va_arg(ap, u_int);
704 s = __uitoa(nbuf, ui, 16);
706 ul = va_arg(ap, u_long);
707 s = __ultoa(nbuf, ul, 16);
710 ret += __puts("0x", putc, arg);
711 ret += __puts(s, putc, arg);
713 case '0': case '1': case '2': case '3': case '4':
714 case '5': case '6': case '7': case '8': case '9':
715 pad = pad * 10 + c - '0';
725 __sputc(char c, void *arg)
730 if (sp->sp_len < sp->sp_size)
731 sp->sp_buf[sp->sp_len++] = c;
732 sp->sp_buf[sp->sp_len] = '\0';
737 __puts(const char *s, putc_func_t *putc, void *arg)
743 for (p = s; *p != '\0'; p++)
744 ret += putc(*p, arg);
749 __uitoa(char *buf, u_int ui, int base)
756 *--p = digits[ui % base];
757 while ((ui /= base) != 0);
762 __ultoa(char *buf, u_long ul, int base)
769 *--p = digits[ul % base];
770 while ((ul /= base) != 0);