Add the FreeBSD/sparc64 bootblock and its make file.

4 files changed, 1448 insertions, 0 deletions

diff --git a/sys/boot/sparc64/boot1/Makefile b/sys/boot/sparc64/boot1/Makefile
new file mode 100644
index 0000000..8f6bf7d
--- /dev/null
+++ b/sys/boot/sparc64/boot1/Makefile
@@ -0,0 +1,19 @@
+# $FreeBSD$
+
+BOOTBLOCKBASE=	0x4000
+
+CFLAGS=	-W -Wall -I../../ -I../../common/ -Os \
+	-DBOOTBLOCKBASE=${BOOTBLOCKBASE} \
+	-ffreestanding -mno-app-regs -mcmodel=medlow
+OBJ=	bootblock.o
+
+all:	bootblock
+
+bootblock.o:	bootblock.c
+	${CC} ${CFLAGS} -c -o ${.TARGET} ${.ALLSRC}
+
+bootblock:	${OBJ}
+	${LD} -N -Ttext ${BOOTBLOCKBASE} -e main -o bootblock ${OBJ}
+	/usr/local/bin/elftoaout bootblock
+clean:
+	rm -f *.o bootblock
diff --git a/sys/boot/sparc64/boot1/boot1.c b/sys/boot/sparc64/boot1/boot1.c
new file mode 100644
index 0000000..30131dc
--- /dev/null
+++ b/sys/boot/sparc64/boot1/boot1.c
@@ -0,0 +1,705 @@
+/*
+ * 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;
+}
diff --git a/sys/boot/sparc64/bootblock/Makefile b/sys/boot/sparc64/bootblock/Makefile
new file mode 100644
index 0000000..8f6bf7d
--- /dev/null
+++ b/sys/boot/sparc64/bootblock/Makefile
@@ -0,0 +1,19 @@
+# $FreeBSD$
+
+BOOTBLOCKBASE=	0x4000
+
+CFLAGS=	-W -Wall -I../../ -I../../common/ -Os \
+	-DBOOTBLOCKBASE=${BOOTBLOCKBASE} \
+	-ffreestanding -mno-app-regs -mcmodel=medlow
+OBJ=	bootblock.o
+
+all:	bootblock
+
+bootblock.o:	bootblock.c
+	${CC} ${CFLAGS} -c -o ${.TARGET} ${.ALLSRC}
+
+bootblock:	${OBJ}
+	${LD} -N -Ttext ${BOOTBLOCKBASE} -e main -o bootblock ${OBJ}
+	/usr/local/bin/elftoaout bootblock
+clean:
+	rm -f *.o bootblock
diff --git a/sys/boot/sparc64/bootblock/bootblock.c b/sys/boot/sparc64/bootblock/bootblock.c
new file mode 100644
index 0000000..30131dc
--- /dev/null
+++ b/sys/boot/sparc64/bootblock/bootblock.c
@@ -0,0 +1,705 @@
+/*
+ * 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;
+}