706 lines
13 KiB
C
706 lines
13 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/reboot.h>
|
|
#include <sys/diskslice.h>
|
|
#include <sys/disklabel.h>
|
|
#include <sys/dirent.h>
|
|
#include <machine/elf.h>
|
|
#include <machine/stdarg.h>
|
|
|
|
#include <ufs/ffs/fs.h>
|
|
#include <ufs/ufs/dinode.h>
|
|
|
|
#include <a.out.h>
|
|
|
|
#define RBX_ASKNAME 0x0 /* -a */
|
|
#define RBX_SINGLE 0x1 /* -s */
|
|
#define RBX_DFLTROOT 0x5 /* -r */
|
|
#define RBX_KDB 0x6 /* -d */
|
|
#define RBX_CONFIG 0xa /* -c */
|
|
#define RBX_VERBOSE 0xb /* -v */
|
|
#define RBX_CDROM 0xd /* -C */
|
|
#define RBX_GDB 0xf /* -g */
|
|
|
|
#define RBX_MASK 0x2000ffff
|
|
|
|
#define PATH_CONFIG "/boot.config"
|
|
#define PATH_LOADER "/boot/loader"
|
|
#define PATH_KERNEL "/kernel"
|
|
|
|
#define ARGS 0x900
|
|
#define NOPT 11
|
|
#define BSIZEMAX 8192
|
|
#define NDEV 5
|
|
|
|
#define TYPE_AD 0
|
|
#define TYPE_WD 1
|
|
#define TYPE_WFD 2
|
|
#define TYPE_FD 3
|
|
#define TYPE_DA 4
|
|
|
|
/*
|
|
* This structure will be refined along with the addition of a bootpath
|
|
* parsing routine when it is necessary to cope with bootpaths that are
|
|
* not in the exact <devpath>@<controller>,<disk>:<partition> format and
|
|
* for which we need to evaluate the disklabel ourselves.
|
|
*/
|
|
struct disk {
|
|
int meta;
|
|
};
|
|
struct disk dsk;
|
|
|
|
extern uint32_t _end;
|
|
|
|
static const char optstr[NOPT] = "aCcgrsv";
|
|
static const unsigned char flags[NOPT] = {
|
|
RBX_ASKNAME,
|
|
RBX_CDROM,
|
|
RBX_CONFIG,
|
|
RBX_GDB,
|
|
RBX_DFLTROOT,
|
|
RBX_SINGLE,
|
|
RBX_VERBOSE
|
|
};
|
|
|
|
static char cmd[512]; /* command to parse */
|
|
static char bname[1024]; /* name of the binary to load */
|
|
static uint32_t opts;
|
|
static int ls;
|
|
static uint32_t fs_off;
|
|
|
|
int main(void);
|
|
void exit(int);
|
|
static void load(const char *);
|
|
static int parse(char *);
|
|
static ino_t lookup(const char *);
|
|
static int xfsread(ino_t, void *, size_t);
|
|
static ssize_t fsread(ino_t, void *, size_t);
|
|
static int dskread(void *, u_int64_t, int);
|
|
static int printf(const char *, ...);
|
|
static int putchar(int);
|
|
static int keyhit(unsigned int);
|
|
static int getc(void);
|
|
|
|
static void *memcpy(void *, const void *, size_t);
|
|
static void *memset(void *, int, size_t);
|
|
static void *malloc(size_t);
|
|
|
|
/*
|
|
* Open Firmware interface functions
|
|
*/
|
|
typedef u_int64_t ofwcell_t;
|
|
typedef int32_t ofwh_t;
|
|
typedef u_int32_t u_ofwh_t;
|
|
typedef int (*ofwfp_t)(ofwcell_t []);
|
|
ofwfp_t ofw; /* the prom Open Firmware entry */
|
|
|
|
void ofw_init(int, int, int, int, ofwfp_t);
|
|
ofwh_t ofw_finddevice(const char *);
|
|
ofwh_t ofw_open(const char *);
|
|
int ofw_getprop(ofwh_t, const char *, void *, size_t);
|
|
int ofw_read(ofwh_t, void *, size_t);
|
|
int ofw_write(ofwh_t, const void *, size_t);
|
|
int ofw_seek(ofwh_t, u_int64_t);
|
|
|
|
ofwh_t bootdevh;
|
|
ofwh_t stdinh, stdouth;
|
|
char bootpath[64];
|
|
|
|
/*
|
|
* This has to stay here, as the PROM seems to ignore the
|
|
* entry point specified in the a.out header. (or elftoaout is broken)
|
|
*/
|
|
|
|
void
|
|
ofw_init(int d, int d1, int d2, int d3, ofwfp_t ofwaddr)
|
|
{
|
|
ofwh_t chosenh;
|
|
|
|
ofw = ofwaddr;
|
|
|
|
chosenh = ofw_finddevice("/chosen");
|
|
ofw_getprop(chosenh, "stdin", &stdinh, sizeof(stdinh));
|
|
ofw_getprop(chosenh, "stdout", &stdouth, sizeof(stdouth));
|
|
ofw_getprop(chosenh, "bootpath", bootpath, sizeof(bootpath));
|
|
|
|
if ((bootdevh = ofw_open(bootpath)) == -1) {
|
|
printf("Could not open boot device.\n");
|
|
}
|
|
|
|
main();
|
|
d = d1 = d2 = d3; /* make GCC happy */
|
|
}
|
|
|
|
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];
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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];
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
int
|
|
ofw_read(ofwh_t devh, void *buf, size_t len)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"read",
|
|
4,
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
int
|
|
ofw_seek(ofwh_t devh, u_int64_t off)
|
|
{
|
|
ofwcell_t args[] = {
|
|
(ofwcell_t)"seek",
|
|
4,
|
|
1,
|
|
(u_ofwh_t)devh,
|
|
off >> 32,
|
|
off & ((1UL << 32) - 1),
|
|
0
|
|
};
|
|
if ((*ofw)(args)) {
|
|
printf("ofw_seek: devh=0x%x off=0x%lx\n", devh, off);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
readfile(const char *fname, void *buf, size_t size)
|
|
{
|
|
ino_t ino;
|
|
|
|
if ((ino = lookup(fname)))
|
|
fsread(ino, buf, size);
|
|
}
|
|
|
|
static int
|
|
strcmp(const char *s1, const char *s2)
|
|
{
|
|
for (; *s1 == *s2 && *s1; s1++, s2++);
|
|
return (u_char)*s1 - (u_char)*s2;
|
|
}
|
|
|
|
static void *
|
|
memset(void *dst, int val, size_t len)
|
|
{
|
|
void * const ret = dst;
|
|
while (len) {
|
|
*((char *)dst)++ = val;
|
|
len--;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
fsfind(const char *name, ino_t * ino)
|
|
{
|
|
char buf[DEV_BSIZE];
|
|
struct dirent *d;
|
|
char *s;
|
|
ssize_t n;
|
|
|
|
fs_off = 0;
|
|
while ((n = fsread(*ino, buf, DEV_BSIZE)) > 0)
|
|
for (s = buf; s < buf + DEV_BSIZE;) {
|
|
d = (void *)s;
|
|
if (ls)
|
|
printf("%s ", d->d_name);
|
|
else if (!strcmp(name, d->d_name)) {
|
|
*ino = d->d_fileno;
|
|
return d->d_type;
|
|
}
|
|
s += d->d_reclen;
|
|
}
|
|
if (n != -1 && ls)
|
|
putchar('\n');
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
getchar(void)
|
|
{
|
|
int c;
|
|
|
|
c = getc();
|
|
if (c == '\r')
|
|
c = '\n';
|
|
return c;
|
|
}
|
|
|
|
static void
|
|
getstr(char *str, int size)
|
|
{
|
|
char *s;
|
|
int c;
|
|
|
|
s = str;
|
|
do {
|
|
switch (c = getchar()) {
|
|
case 0:
|
|
break;
|
|
case '\b':
|
|
case '\177':
|
|
if (s > str) {
|
|
s--;
|
|
putchar('\b');
|
|
putchar(' ');
|
|
} else
|
|
c = 0;
|
|
break;
|
|
case '\n':
|
|
*s = 0;
|
|
break;
|
|
default:
|
|
if (s - str < size - 1)
|
|
*s++ = c;
|
|
}
|
|
if (c)
|
|
putchar(c);
|
|
} while (c != '\n');
|
|
}
|
|
|
|
static void
|
|
putc(int c)
|
|
{
|
|
char d = c;
|
|
ofw_write(stdouth, &d, 1);
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
readfile(PATH_CONFIG, cmd, sizeof(cmd));
|
|
if (cmd[0] != '\0') {
|
|
printf("%s: %s", PATH_CONFIG, cmd);
|
|
if (parse(cmd))
|
|
cmd[0] = '\0';
|
|
}
|
|
if (bname[0] == '\0')
|
|
memcpy(bname, PATH_LOADER, sizeof(PATH_LOADER));
|
|
|
|
printf(" \n>> FreeBSD/sparc64 boot block\n"
|
|
" Boot path: %s\n"
|
|
" Boot loader: %s\n", bootpath, PATH_LOADER);
|
|
load(bname);
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
load(const char *fname)
|
|
{
|
|
Elf64_Ehdr eh;
|
|
Elf64_Phdr ep[2];
|
|
Elf64_Shdr es[2];
|
|
caddr_t p;
|
|
ino_t ino;
|
|
vm_offset_t entry;
|
|
int i, j;
|
|
|
|
if ((ino = lookup(fname)) == 0) {
|
|
if (!ls)
|
|
printf("File %s not found\n", fname);
|
|
return;
|
|
}
|
|
if (xfsread(ino, &eh, sizeof(eh)))
|
|
return;
|
|
if (!IS_ELF(eh)) {
|
|
printf("Not an ELF file\n");
|
|
return;
|
|
}
|
|
fs_off = eh.e_phoff;
|
|
for (j = i = 0; i < eh.e_phnum && j < 2; i++) {
|
|
if (xfsread(ino, ep + j, sizeof(ep[0])))
|
|
return;
|
|
if (ep[j].p_type == PT_LOAD)
|
|
j++;
|
|
}
|
|
for (i = 0; i < j; i++) {
|
|
p = (caddr_t)ep[i].p_vaddr;
|
|
fs_off = ep[i].p_offset;
|
|
if (xfsread(ino, p, ep[i].p_filesz))
|
|
return;
|
|
/*
|
|
* Assume the second program header table entry
|
|
* to contain data and bss. Clear out the .bss section.
|
|
*/
|
|
if (i == 1)
|
|
memset(p + ep[i].p_filesz, 0, ep[i].p_memsz - ep[i].p_filesz);
|
|
}
|
|
p += roundup2(ep[1].p_memsz, PAGE_SIZE);
|
|
if (eh.e_shnum == eh.e_shstrndx + 3) {
|
|
fs_off = eh.e_shoff + sizeof(es[0]) * (eh.e_shstrndx + 1);
|
|
if (xfsread(ino, &es, sizeof(es)))
|
|
return;
|
|
for (i = 0; i < 2; i++) {
|
|
memcpy(p, &es[i].sh_size, sizeof(es[i].sh_size));
|
|
p += sizeof(es[i].sh_size);
|
|
fs_off = es[i].sh_offset;
|
|
if (xfsread(ino, p, es[i].sh_size))
|
|
return;
|
|
p += es[i].sh_size;
|
|
}
|
|
}
|
|
entry = eh.e_entry;
|
|
ofw_close(bootdevh);
|
|
(*(void (*)(int, int, int, int, ofwfp_t))entry)(0, 0, 0, 0, ofw);
|
|
}
|
|
|
|
static int
|
|
parse(char *arg)
|
|
{
|
|
char *p;
|
|
int c, i;
|
|
|
|
while ((c = *arg++)) {
|
|
if (c == ' ' || c == '\t' || c == '\n')
|
|
continue;
|
|
for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++);
|
|
if (*p)
|
|
*p++ = 0;
|
|
if (c == '-') {
|
|
while ((c = *arg++)) {
|
|
for (i = 0; c != optstr[i]; i++)
|
|
if (i == NOPT - 1)
|
|
return -1;
|
|
opts ^= 1 << flags[i];
|
|
}
|
|
}
|
|
arg = p;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static ino_t
|
|
lookup(const char *path)
|
|
{
|
|
char name[MAXNAMLEN + 1];
|
|
const char *s;
|
|
ino_t ino;
|
|
ssize_t n;
|
|
int dt;
|
|
|
|
ino = ROOTINO;
|
|
dt = DT_DIR;
|
|
for (;;) {
|
|
if (*path == '/')
|
|
path++;
|
|
if (!*path)
|
|
break;
|
|
for (s = path; *s && *s != '/'; s++);
|
|
if ((n = s - path) > MAXNAMLEN)
|
|
return 0;
|
|
ls = *path == '?' && n == 1 && !*s;
|
|
memcpy(name, path, n);
|
|
name[n] = 0;
|
|
if ((dt = fsfind(name, &ino)) <= 0)
|
|
break;
|
|
path = s;
|
|
}
|
|
return dt == DT_REG ? ino : 0;
|
|
}
|
|
|
|
static int
|
|
xfsread(ino_t inode, void *buf, size_t nbyte)
|
|
{
|
|
if (fsread(inode, buf, nbyte) != (ssize_t)nbyte) {
|
|
printf("Invalid %s\n", "format");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t
|
|
fsread(ino_t inode, void *buf, size_t nbyte)
|
|
{
|
|
static struct fs fs;
|
|
static struct dinode din;
|
|
static char *blkbuf;
|
|
static ufs_daddr_t *indbuf;
|
|
static ino_t inomap;
|
|
static ufs_daddr_t blkmap, indmap;
|
|
static unsigned int fsblks;
|
|
char *s;
|
|
ufs_daddr_t lbn, addr;
|
|
size_t n, nb, off;
|
|
|
|
if (!dsk.meta) {
|
|
if (!blkbuf)
|
|
blkbuf = malloc(BSIZEMAX);
|
|
inomap = 0;
|
|
if (dskread(blkbuf, SBOFF / DEV_BSIZE, SBSIZE / DEV_BSIZE))
|
|
return -1;
|
|
memcpy(&fs, blkbuf, sizeof(fs));
|
|
if (fs.fs_magic != FS_MAGIC) {
|
|
printf("Not ufs\n");
|
|
return -1;
|
|
}
|
|
fsblks = fs.fs_bsize >> DEV_BSHIFT;
|
|
dsk.meta++;
|
|
}
|
|
if (!inode)
|
|
return 0;
|
|
if (inomap != inode) {
|
|
if (dskread(blkbuf, fsbtodb(&fs, ino_to_fsba(&fs, inode)),
|
|
fsblks))
|
|
return -1;
|
|
din = ((struct dinode *)blkbuf)[inode % INOPB(&fs)];
|
|
inomap = inode;
|
|
fs_off = 0;
|
|
blkmap = indmap = 0;
|
|
}
|
|
s = buf;
|
|
if (nbyte > (n = din.di_size - fs_off))
|
|
nbyte = n;
|
|
nb = nbyte;
|
|
while (nb) {
|
|
lbn = lblkno(&fs, fs_off);
|
|
if (lbn < NDADDR)
|
|
addr = din.di_db[lbn];
|
|
else {
|
|
if (indmap != din.di_ib[0]) {
|
|
if (!indbuf)
|
|
indbuf = malloc(BSIZEMAX);
|
|
if (dskread(indbuf, fsbtodb(&fs, din.di_ib[0]),
|
|
fsblks))
|
|
return -1;
|
|
indmap = din.di_ib[0];
|
|
}
|
|
addr = indbuf[(lbn - NDADDR) % NINDIR(&fs)];
|
|
}
|
|
n = dblksize(&fs, &din, lbn);
|
|
if (blkmap != addr) {
|
|
if (dskread(blkbuf, fsbtodb(&fs, addr), n >> DEV_BSHIFT))
|
|
return -1;
|
|
blkmap = addr;
|
|
}
|
|
off = blkoff(&fs, fs_off);
|
|
n -= off;
|
|
if (n > nb)
|
|
n = nb;
|
|
memcpy(s, blkbuf + off, n);
|
|
s += n;
|
|
fs_off += n;
|
|
nb -= n;
|
|
}
|
|
return nbyte;
|
|
}
|
|
|
|
static int
|
|
dskread(void *buf, u_int64_t lba, int nblk)
|
|
{
|
|
/*
|
|
* The OpenFirmware 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(bootdevh, lba * 512);
|
|
ofw_read(bootdevh, buf, nblk * DEV_BSIZE);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
printf(const char *fmt,...)
|
|
{
|
|
static const char digits[16] = "0123456789abcdef";
|
|
va_list ap;
|
|
char buf[10];
|
|
char *s;
|
|
unsigned long int r, u;
|
|
int c;
|
|
|
|
va_start(ap, fmt);
|
|
while ((c = *fmt++)) {
|
|
if (c == '%') {
|
|
c = *fmt++;
|
|
switch (c) {
|
|
case 'c':
|
|
putchar(va_arg(ap, int));
|
|
continue;
|
|
case 's':
|
|
for (s = va_arg(ap, char *); *s; s++)
|
|
putchar(*s);
|
|
continue;
|
|
case 'p':
|
|
if (c == 'p') {
|
|
putchar('0');
|
|
putchar('x');
|
|
}
|
|
case 'u':
|
|
case 'x':
|
|
r = c == 'u' ? 10U : 16U;
|
|
u = c == 'p' ? va_arg(ap, unsigned long) :
|
|
va_arg(ap, unsigned int);
|
|
s = buf;
|
|
do
|
|
*s++ = digits[u % r];
|
|
while (u /= r);
|
|
while (--s >= buf)
|
|
putchar(*s);
|
|
continue;
|
|
}
|
|
}
|
|
putchar(c);
|
|
}
|
|
va_end(ap);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
putchar(int c)
|
|
{
|
|
if (c == '\n')
|
|
putc('\r');
|
|
putc(c);
|
|
return c;
|
|
}
|
|
|
|
static void *
|
|
memcpy(void *dst, const void *src, size_t size)
|
|
{
|
|
const char *s;
|
|
char *d;
|
|
|
|
for (d = dst, s = src; size; size--)
|
|
*d++ = *s++;
|
|
return dst;
|
|
}
|
|
|
|
static void *
|
|
malloc(size_t size)
|
|
{
|
|
static vm_offset_t next = 0x10000;
|
|
void *p;
|
|
|
|
if (size & 0xf)
|
|
size = (size + 0xf) & ~0xf;
|
|
p = (void *)next;
|
|
next += size;
|
|
return p;
|
|
}
|
|
|
|
static int
|
|
keyhit(unsigned int ticks)
|
|
{
|
|
/* XXX */
|
|
return 0;
|
|
ticks = ticks; /* make GCC happy */
|
|
}
|
|
|
|
static int
|
|
getc(void)
|
|
{
|
|
char c;
|
|
ofw_read(stdinh, &c, 1);
|
|
return c;
|
|
}
|