778 lines
14 KiB
C
778 lines
14 KiB
C
/*-
|
|
* Copyright (c) 1998 Robert Nordier
|
|
* All rights reserved.
|
|
* Copyright (c) 2001 Robert Drehmel
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are freely
|
|
* permitted provided that the above copyright notice and this
|
|
* paragraph and the following disclaimer are duplicated in all
|
|
* such forms.
|
|
*
|
|
* This software is provided "AS IS" and without any express or
|
|
* implied warranties, including, without limitation, the implied
|
|
* warranties of merchantability and fitness for a particular
|
|
* purpose.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/dirent.h>
|
|
#include <machine/elf.h>
|
|
#include <machine/stdarg.h>
|
|
|
|
#include "paths.h"
|
|
|
|
#define BSIZEMAX 16384
|
|
|
|
typedef int putc_func_t(char c, void *arg);
|
|
typedef int32_t ofwh_t;
|
|
|
|
struct sp_data {
|
|
char *sp_buf;
|
|
u_int sp_len;
|
|
u_int sp_size;
|
|
};
|
|
|
|
static const char digits[] = "0123456789abcdef";
|
|
|
|
static char bootpath[128];
|
|
static char bootargs[128];
|
|
|
|
static ofwh_t bootdev;
|
|
|
|
static struct fs fs;
|
|
static char blkbuf[BSIZEMAX];
|
|
static unsigned int fsblks;
|
|
|
|
static uint32_t fs_off;
|
|
|
|
int main(int ac, char **av);
|
|
|
|
static void exit(int) __dead2;
|
|
static void load(const char *);
|
|
static int dskread(void *, u_int64_t, int);
|
|
|
|
static void usage(void);
|
|
|
|
static void bcopy(const void *src, void *dst, size_t len);
|
|
static void bzero(void *b, size_t len);
|
|
|
|
static int domount(const char *device, int quiet);
|
|
|
|
static void panic(const char *fmt, ...) __dead2;
|
|
static int printf(const char *fmt, ...);
|
|
static int putchar(char c, void *arg);
|
|
static int vprintf(const char *fmt, va_list ap);
|
|
static int vsnprintf(char *str, size_t sz, const char *fmt, va_list ap);
|
|
|
|
static int __printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap);
|
|
static int __putc(char c, void *arg);
|
|
static int __puts(const char *s, putc_func_t *putc, void *arg);
|
|
static int __sputc(char c, void *arg);
|
|
static char *__uitoa(char *buf, u_int val, int base);
|
|
static char *__ultoa(char *buf, u_long val, int base);
|
|
|
|
void __syncicache(void *, int);
|
|
|
|
/*
|
|
* Open Firmware interface functions
|
|
*/
|
|
typedef u_int32_t ofwcell_t;
|
|
typedef u_int32_t u_ofwh_t;
|
|
typedef int (*ofwfp_t)(void *);
|
|
ofwfp_t ofw; /* the prom Open Firmware entry */
|
|
ofwh_t chosenh;
|
|
|
|
void ofw_init(void *, int, int (*)(void *), char *, int);
|
|
static ofwh_t ofw_finddevice(const char *);
|
|
static ofwh_t ofw_open(const char *);
|
|
static int ofw_close(ofwh_t);
|
|
static int ofw_getprop(ofwh_t, const char *, void *, size_t);
|
|
static int ofw_setprop(ofwh_t, const char *, void *, size_t);
|
|
static int ofw_read(ofwh_t, void *, size_t);
|
|
static int ofw_write(ofwh_t, const void *, size_t);
|
|
static int ofw_claim(void *virt, size_t len, u_int align);
|
|
static int ofw_seek(ofwh_t, u_int64_t);
|
|
static void ofw_exit(void) __dead2;
|
|
|
|
ofwh_t bootdevh;
|
|
ofwh_t stdinh, stdouth;
|
|
|
|
__asm(" \n\
|
|
.data \n\
|
|
.align 4 \n\
|
|
stack: \n\
|
|
.space 16384 \n\
|
|
\n\
|
|
.text \n\
|
|
.globl _start \n\
|
|
_start: \n\
|
|
lis %r1,stack@ha \n\
|
|
addi %r1,%r1,stack@l \n\
|
|
addi %r1,%r1,8192 \n\
|
|
\n\
|
|
b ofw_init \n\
|
|
");
|
|
|
|
void
|
|
ofw_init(void *vpd, int res, int (*openfirm)(void *), char *arg, int argl)
|
|
{
|
|
char *av[16];
|
|
char *p;
|
|
int ac;
|
|
|
|
ofw = openfirm;
|
|
|
|
chosenh = ofw_finddevice("/chosen");
|
|
ofw_getprop(chosenh, "stdin", &stdinh, sizeof(stdinh));
|
|
ofw_getprop(chosenh, "stdout", &stdouth, sizeof(stdouth));
|
|
ofw_getprop(chosenh, "bootargs", bootargs, sizeof(bootargs));
|
|
ofw_getprop(chosenh, "bootpath", bootpath, sizeof(bootpath));
|
|
|
|
bootargs[sizeof(bootargs) - 1] = '\0';
|
|
bootpath[sizeof(bootpath) - 1] = '\0';
|
|
|
|
p = bootpath;
|
|
while (*p != '\0') {
|
|
/* Truncate partition ID */
|
|
if (*p == ':') {
|
|
ofw_close(bootdev);
|
|
*(++p) = '\0';
|
|
break;
|
|
}
|
|
p++;
|
|
}
|
|
|
|
ac = 0;
|
|
p = bootargs;
|
|
for (;;) {
|
|
while (*p == ' ' && *p != '\0')
|
|
p++;
|
|
if (*p == '\0' || ac >= 16)
|
|
break;
|
|
av[ac++] = p;
|
|
while (*p != ' ' && *p != '\0')
|
|
p++;
|
|
if (*p != '\0')
|
|
*p++ = '\0';
|
|
}
|
|
|
|
exit(main(ac, av));
|
|
}
|
|
|
|
static ofwh_t
|
|
ofw_finddevice(const char *name)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"finddevice",
|
|
1,
|
|
1,
|
|
(ofwcell_t)name,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_finddevice: name=\"%s\"\n", name);
|
|
return (1);
|
|
}
|
|
return (args[4]);
|
|
}
|
|
|
|
static int
|
|
ofw_getprop(ofwh_t ofwh, const char *name, void *buf, size_t len)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"getprop",
|
|
4,
|
|
1,
|
|
(u_ofwh_t)ofwh,
|
|
(ofwcell_t)name,
|
|
(ofwcell_t)buf,
|
|
len,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_getprop: ofwh=0x%x buf=%p len=%u\n",
|
|
ofwh, buf, len);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_setprop(ofwh_t ofwh, const char *name, void *buf, size_t len)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"setprop",
|
|
4,
|
|
1,
|
|
(u_ofwh_t)ofwh,
|
|
(ofwcell_t)name,
|
|
(ofwcell_t)buf,
|
|
len,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_setprop: ofwh=0x%x buf=%p len=%u\n",
|
|
ofwh, buf, len);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static ofwh_t
|
|
ofw_open(const char *path)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"open",
|
|
1,
|
|
1,
|
|
(ofwcell_t)path,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_open: path=\"%s\"\n", path);
|
|
return (-1);
|
|
}
|
|
return (args[4]);
|
|
}
|
|
|
|
static int
|
|
ofw_close(ofwh_t devh)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"close",
|
|
1,
|
|
0,
|
|
(u_ofwh_t)devh
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_close: devh=0x%x\n", devh);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_claim(void *virt, size_t len, u_int align)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"claim",
|
|
3,
|
|
1,
|
|
(ofwcell_t)virt,
|
|
len,
|
|
align,
|
|
0,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_claim: virt=%p len=%u\n", virt, len);
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_read(ofwh_t devh, void *buf, size_t len)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"read",
|
|
3,
|
|
1,
|
|
(u_ofwh_t)devh,
|
|
(ofwcell_t)buf,
|
|
len,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_read: devh=0x%x buf=%p len=%u\n", devh, buf, len);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_write(ofwh_t devh, const void *buf, size_t len)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"write",
|
|
3,
|
|
1,
|
|
(u_ofwh_t)devh,
|
|
(ofwcell_t)buf,
|
|
len,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_write: devh=0x%x buf=%p len=%u\n", devh, buf, len);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ofw_seek(ofwh_t devh, u_int64_t off)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"seek",
|
|
3,
|
|
1,
|
|
(u_ofwh_t)devh,
|
|
off >> 32,
|
|
off,
|
|
0
|
|
};
|
|
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_seek: devh=0x%x off=0x%lx\n", devh, off);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
ofw_exit(void)
|
|
{
|
|
ofwcell_t args[3];
|
|
|
|
args[0] = (ofwcell_t)"exit";
|
|
args[1] = 0;
|
|
args[2] = 0;
|
|
|
|
for (;;)
|
|
(*ofw)(args);
|
|
}
|
|
|
|
static void
|
|
bcopy(const void *src, void *dst, size_t len)
|
|
{
|
|
const char *s = src;
|
|
char *d = dst;
|
|
|
|
while (len-- != 0)
|
|
*d++ = *s++;
|
|
}
|
|
|
|
static void
|
|
memcpy(void *dst, const void *src, size_t len)
|
|
{
|
|
bcopy(src, dst, len);
|
|
}
|
|
|
|
static void
|
|
bzero(void *b, size_t len)
|
|
{
|
|
char *p = b;
|
|
|
|
while (len-- != 0)
|
|
*p++ = 0;
|
|
}
|
|
|
|
static int
|
|
strcmp(const char *s1, const char *s2)
|
|
{
|
|
for (; *s1 == *s2 && *s1; s1++, s2++)
|
|
;
|
|
return ((u_char)*s1 - (u_char)*s2);
|
|
}
|
|
|
|
#include "ufsread.c"
|
|
|
|
int
|
|
main(int ac, char **av)
|
|
{
|
|
const char *path;
|
|
char bootpath_full[255];
|
|
int i, len;
|
|
|
|
path = PATH_LOADER;
|
|
for (i = 0; i < ac; i++) {
|
|
switch (av[i][0]) {
|
|
case '-':
|
|
switch (av[i][1]) {
|
|
default:
|
|
usage();
|
|
}
|
|
break;
|
|
default:
|
|
path = av[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
printf(" \n>> FreeBSD/powerpc Open Firmware boot block\n"
|
|
" Boot path: %s\n"
|
|
" Boot loader: %s\n", bootpath, path);
|
|
|
|
len = 0;
|
|
while (bootpath[len] != '\0') len++;
|
|
|
|
memcpy(bootpath_full,bootpath,len+1);
|
|
|
|
if (bootpath_full[len-1] != ':') {
|
|
/* First try full volume */
|
|
if (domount(bootpath_full,1) == 0)
|
|
goto out;
|
|
|
|
/* Add a : so that we try partitions if that fails */
|
|
if (bootdev > 0)
|
|
ofw_close(bootdev);
|
|
bootpath_full[len] = ':';
|
|
len += 1;
|
|
}
|
|
|
|
/* Loop through first 16 partitions to find a UFS one */
|
|
for (i = 0; i < 16; i++) {
|
|
if (i < 10) {
|
|
bootpath_full[len] = i + '0';
|
|
bootpath_full[len+1] = '\0';
|
|
} else {
|
|
bootpath_full[len] = '1';
|
|
bootpath_full[len+1] = i - 10 + '0';
|
|
bootpath_full[len+2] = '\0';
|
|
}
|
|
|
|
if (domount(bootpath_full,1) >= 0)
|
|
break;
|
|
|
|
if (bootdev > 0)
|
|
ofw_close(bootdev);
|
|
}
|
|
|
|
if (i >= 16)
|
|
panic("domount");
|
|
|
|
out:
|
|
printf(" Boot volume: %s\n",bootpath_full);
|
|
ofw_setprop(chosenh, "bootargs", bootpath_full, len+2);
|
|
load(path);
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
printf("usage: boot device [/path/to/loader]\n");
|
|
exit(1);
|
|
}
|
|
|
|
static void
|
|
exit(int code)
|
|
{
|
|
|
|
ofw_exit();
|
|
}
|
|
|
|
static struct dmadat __dmadat;
|
|
|
|
static int
|
|
domount(const char *device, int quiet)
|
|
{
|
|
|
|
dmadat = &__dmadat;
|
|
if ((bootdev = ofw_open(device)) == -1) {
|
|
printf("domount: can't open device\n");
|
|
return (-1);
|
|
}
|
|
if (fsread(0, NULL, 0)) {
|
|
if (!quiet)
|
|
printf("domount: can't read superblock\n");
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
load(const char *fname)
|
|
{
|
|
Elf32_Ehdr eh;
|
|
Elf32_Phdr ph;
|
|
caddr_t p;
|
|
ufs_ino_t ino;
|
|
int i;
|
|
|
|
if ((ino = lookup(fname)) == 0) {
|
|
printf("File %s not found\n", fname);
|
|
return;
|
|
}
|
|
if (fsread(ino, &eh, sizeof(eh)) != sizeof(eh)) {
|
|
printf("Can't read elf header\n");
|
|
return;
|
|
}
|
|
if (!IS_ELF(eh)) {
|
|
printf("Not an ELF file\n");
|
|
return;
|
|
}
|
|
for (i = 0; i < eh.e_phnum; i++) {
|
|
fs_off = eh.e_phoff + i * eh.e_phentsize;
|
|
if (fsread(ino, &ph, sizeof(ph)) != sizeof(ph)) {
|
|
printf("Can't read program header %d\n", i);
|
|
return;
|
|
}
|
|
if (ph.p_type != PT_LOAD)
|
|
continue;
|
|
fs_off = ph.p_offset;
|
|
p = (caddr_t)ph.p_vaddr;
|
|
ofw_claim(p,(ph.p_filesz > ph.p_memsz) ?
|
|
ph.p_filesz : ph.p_memsz,0);
|
|
if (fsread(ino, p, ph.p_filesz) != ph.p_filesz) {
|
|
printf("Can't read content of section %d\n", i);
|
|
return;
|
|
}
|
|
if (ph.p_filesz != ph.p_memsz)
|
|
bzero(p + ph.p_filesz, ph.p_memsz - ph.p_filesz);
|
|
__syncicache(p, ph.p_memsz);
|
|
}
|
|
ofw_close(bootdev);
|
|
(*(void (*)(void *, int, ofwfp_t, char *, int))eh.e_entry)(NULL, 0,
|
|
ofw,NULL,0);
|
|
}
|
|
|
|
static int
|
|
dskread(void *buf, u_int64_t lba, int nblk)
|
|
{
|
|
/*
|
|
* The Open Firmware should open the correct partition for us.
|
|
* That means, if we read from offset zero on an open instance handle,
|
|
* we should read from offset zero of that partition.
|
|
*/
|
|
ofw_seek(bootdev, lba * DEV_BSIZE);
|
|
ofw_read(bootdev, buf, nblk * DEV_BSIZE);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
panic(const char *fmt, ...)
|
|
{
|
|
char buf[128];
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
vsnprintf(buf, sizeof buf, fmt, ap);
|
|
printf("panic: %s\n", buf);
|
|
va_end(ap);
|
|
|
|
exit(1);
|
|
}
|
|
|
|
static int
|
|
printf(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
int ret;
|
|
|
|
va_start(ap, fmt);
|
|
ret = vprintf(fmt, ap);
|
|
va_end(ap);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
putchar(char c, void *arg)
|
|
{
|
|
char buf;
|
|
|
|
if (c == '\n') {
|
|
buf = '\r';
|
|
ofw_write(stdouth, &buf, 1);
|
|
}
|
|
buf = c;
|
|
ofw_write(stdouth, &buf, 1);
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
vprintf(const char *fmt, va_list ap)
|
|
{
|
|
int ret;
|
|
|
|
ret = __printf(fmt, putchar, 0, ap);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
vsnprintf(char *str, size_t sz, const char *fmt, va_list ap)
|
|
{
|
|
struct sp_data sp;
|
|
int ret;
|
|
|
|
sp.sp_buf = str;
|
|
sp.sp_len = 0;
|
|
sp.sp_size = sz;
|
|
ret = __printf(fmt, __sputc, &sp, ap);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
__printf(const char *fmt, putc_func_t *putc, void *arg, va_list ap)
|
|
{
|
|
char buf[(sizeof(long) * 8) + 1];
|
|
char *nbuf;
|
|
u_long ul;
|
|
u_int ui;
|
|
int lflag;
|
|
int sflag;
|
|
char *s;
|
|
int pad;
|
|
int ret;
|
|
int c;
|
|
|
|
nbuf = &buf[sizeof buf - 1];
|
|
ret = 0;
|
|
while ((c = *fmt++) != 0) {
|
|
if (c != '%') {
|
|
ret += putc(c, arg);
|
|
continue;
|
|
}
|
|
lflag = 0;
|
|
sflag = 0;
|
|
pad = 0;
|
|
reswitch: c = *fmt++;
|
|
switch (c) {
|
|
case '#':
|
|
sflag = 1;
|
|
goto reswitch;
|
|
case '%':
|
|
ret += putc('%', arg);
|
|
break;
|
|
case 'c':
|
|
c = va_arg(ap, int);
|
|
ret += putc(c, arg);
|
|
break;
|
|
case 'd':
|
|
if (lflag == 0) {
|
|
ui = (u_int)va_arg(ap, int);
|
|
if (ui < (int)ui) {
|
|
ui = -ui;
|
|
ret += putc('-', arg);
|
|
}
|
|
s = __uitoa(nbuf, ui, 10);
|
|
} else {
|
|
ul = (u_long)va_arg(ap, long);
|
|
if (ul < (long)ul) {
|
|
ul = -ul;
|
|
ret += putc('-', arg);
|
|
}
|
|
s = __ultoa(nbuf, ul, 10);
|
|
}
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 'l':
|
|
lflag = 1;
|
|
goto reswitch;
|
|
case 'o':
|
|
if (lflag == 0) {
|
|
ui = (u_int)va_arg(ap, u_int);
|
|
s = __uitoa(nbuf, ui, 8);
|
|
} else {
|
|
ul = (u_long)va_arg(ap, u_long);
|
|
s = __ultoa(nbuf, ul, 8);
|
|
}
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 'p':
|
|
ul = (u_long)va_arg(ap, void *);
|
|
s = __ultoa(nbuf, ul, 16);
|
|
ret += __puts("0x", putc, arg);
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 's':
|
|
s = va_arg(ap, char *);
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 'u':
|
|
if (lflag == 0) {
|
|
ui = va_arg(ap, u_int);
|
|
s = __uitoa(nbuf, ui, 10);
|
|
} else {
|
|
ul = va_arg(ap, u_long);
|
|
s = __ultoa(nbuf, ul, 10);
|
|
}
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case 'x':
|
|
if (lflag == 0) {
|
|
ui = va_arg(ap, u_int);
|
|
s = __uitoa(nbuf, ui, 16);
|
|
} else {
|
|
ul = va_arg(ap, u_long);
|
|
s = __ultoa(nbuf, ul, 16);
|
|
}
|
|
if (sflag)
|
|
ret += __puts("0x", putc, arg);
|
|
ret += __puts(s, putc, arg);
|
|
break;
|
|
case '0': case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
pad = pad * 10 + c - '0';
|
|
goto reswitch;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
__sputc(char c, void *arg)
|
|
{
|
|
struct sp_data *sp;
|
|
|
|
sp = arg;
|
|
if (sp->sp_len < sp->sp_size)
|
|
sp->sp_buf[sp->sp_len++] = c;
|
|
sp->sp_buf[sp->sp_len] = '\0';
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
__puts(const char *s, putc_func_t *putc, void *arg)
|
|
{
|
|
const char *p;
|
|
int ret;
|
|
|
|
ret = 0;
|
|
for (p = s; *p != '\0'; p++)
|
|
ret += putc(*p, arg);
|
|
return (ret);
|
|
}
|
|
|
|
static char *
|
|
__uitoa(char *buf, u_int ui, int base)
|
|
{
|
|
char *p;
|
|
|
|
p = buf;
|
|
*p = '\0';
|
|
do
|
|
*--p = digits[ui % base];
|
|
while ((ui /= base) != 0);
|
|
return (p);
|
|
}
|
|
|
|
static char *
|
|
__ultoa(char *buf, u_long ul, int base)
|
|
{
|
|
char *p;
|
|
|
|
p = buf;
|
|
*p = '\0';
|
|
do
|
|
*--p = digits[ul % base];
|
|
while ((ul /= base) != 0);
|
|
return (p);
|
|
}
|