oops, why did i delete this. bizzare

1 files changed, 421 insertions, 0 deletions

diff --git a/sys/arch/macppc/stand/ofdev.c b/sys/arch/macppc/stand/ofdev.c
new file mode 100644
index 00000000000..6ab2517727a
--- /dev/null
+++ b/sys/arch/macppc/stand/ofdev.c
@@ -0,0 +1,421 @@
+/*	$OpenBSD: ofdev.c,v 1.11 2007/06/02 15:28:09 deraadt Exp $	*/
+/*	$NetBSD: ofdev.c,v 1.1 1997/04/16 20:29:20 thorpej Exp $	*/
+
+/*
+ * Copyright (C) 1995, 1996 Wolfgang Solfrank.
+ * Copyright (C) 1995, 1996 TooLs GmbH.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by TooLs GmbH.
+ * 4. The name of TooLs GmbH may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*
+ * Device I/O routines using Open Firmware
+ */
+#include <sys/param.h>
+#include <sys/disklabel.h>
+#include <netinet/in.h>
+
+#include <lib/libsa/stand.h>
+#include <lib/libsa/ufs.h>
+#include <lib/libsa/cd9660.h>
+#include <lib/libsa/nfs.h>
+#include <hfs.h>
+
+#include <macppc/stand/ofdev.h>
+
+extern char bootdev[];
+
+static char *
+filename(char *str, char *ppart)
+{
+	char *cp, *lp;
+	char savec;
+	int dhandle;
+	char devtype[16];
+
+	lp = str;
+	devtype[0] = 0;
+	*ppart = 0;
+	for (cp = str; *cp; lp = cp) {
+		/* For each component of the path name... */
+		while (*++cp && *cp != '/')
+			;
+		savec = *cp;
+		*cp = 0;
+		/* ...look whether there is a device with this name */
+		dhandle = OF_finddevice(str);
+		*cp = savec;
+		if (dhandle == -1) {
+			/*
+			 * if not, lp is the delimiter between device and path
+			 */
+
+			/* if the last component was a block device... */
+			if (!strcmp(devtype, "block")) {
+				/* search for arguments */
+				for (cp = lp;
+				    --cp >= str && *cp != '/' && *cp != ':';)
+					;
+				if (cp >= str && *cp == ':') {
+					/* found arguments */
+					for (cp = lp;
+					    *--cp != ':' && *cp != ',';)
+						;
+					if (*++cp >= 'a' &&
+					    *cp <= 'a' + MAXPARTITIONS)
+						*ppart = *cp;
+				}
+			}
+			return lp;
+		} else if (OF_getprop(dhandle, "device_type", devtype,
+		    sizeof devtype) < 0)
+			devtype[0] = 0;
+	}
+	return 0;
+}
+
+static int
+strategy(void *devdata, int rw, daddr_t blk, size_t size, void *buf,
+    size_t *rsize)
+{
+	struct of_dev *dev = devdata;
+	u_quad_t pos;
+	int n;
+
+	if (rw != F_READ)
+		return EPERM;
+	if (dev->type != OFDEV_DISK)
+		panic("strategy");
+
+	pos = (u_quad_t)(blk + dev->partoff) * dev->bsize;
+
+	for (;;) {
+		if (OF_seek(dev->handle, pos) < 0)
+			break;
+		n = OF_read(dev->handle, buf, size);
+		if (n == -2)
+			continue;
+		if (n < 0)
+			break;
+		*rsize = n;
+		return 0;
+	}
+	return EIO;
+}
+
+static int
+devclose(struct open_file *of)
+{
+	struct of_dev *op = of->f_devdata;
+
+	if (op->type == OFDEV_NET)
+		net_close(op);
+	if (op->dmabuf)
+		OF_call_method("dma-free", op->handle, 2, 0,
+		    op->dmabuf, MAXPHYS);
+
+	OF_close(op->handle);
+	op->handle = -1;
+}
+
+static struct devsw devsw[1] = {
+	"OpenFirmware",
+	strategy,
+	(int (*)(struct open_file *, ...))nodev,
+	devclose,
+	noioctl
+};
+int ndevs = sizeof devsw / sizeof devsw[0];
+
+static struct fs_ops file_system_ufs = {
+	ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek, ufs_stat
+};
+static struct fs_ops file_system_cd9660 = {
+	cd9660_open, cd9660_close, cd9660_read, cd9660_write, cd9660_seek,
+	    cd9660_stat
+};
+static struct fs_ops file_system_hfs = {
+	hfs_open, hfs_close, hfs_read, hfs_write, hfs_seek, hfs_stat
+};
+static struct fs_ops file_system_nfs = {
+	nfs_open, nfs_close, nfs_read, nfs_write, nfs_seek, nfs_stat
+};
+
+struct fs_ops file_system[3];
+int nfsys;
+
+static struct of_dev ofdev = {
+	-1,
+};
+
+char opened_name[256];
+
+static u_long
+get_long(p)
+	const void *p;
+{
+	const unsigned char *cp = p;
+
+	return cp[0] | (cp[1] << 8) | (cp[2] << 16) | (cp[3] << 24);
+}
+
+int
+read_mac_label(struct of_dev *devp, char *buf, struct disklabel *lp)
+{
+	struct part_map_entry *part;
+	struct buf *bp;
+	int err;
+	size_t read;
+	int part_cnt;
+	int i;
+	char *s;
+
+	if ((strategy(devp, F_READ, 1, DEV_BSIZE, buf, &read) != 0) ||
+	    (read != DEV_BSIZE))
+		return ERDLAB;
+
+	part = (struct part_map_entry *)buf;
+
+	/* if first partition is not valid, assume not HFS/DPME partitioned */
+	if (part->pmSig != PART_ENTRY_MAGIC)
+		return ERDLAB;
+
+	part_cnt = part->pmMapBlkCnt;
+
+	/* first search for "OpenBSD" partition type
+	 * standard bsd disklabel lives inside at offset 0
+	 * otherwise, we should fake a bsd partition
+	 * with first HFS partition starting at 'i'
+	 * ? will this cause problems with booting bsd.rd from hfs
+	 */
+	for (i = 0; i < part_cnt; i++) {
+		/* read the appropriate block */
+		if ((strategy(devp, F_READ, 1+i, DEV_BSIZE, buf, &read) != 0)
+		   || (read != DEV_BSIZE))
+			return ERDLAB;
+
+		part = (struct part_map_entry *)buf;
+		/* toupper the string, in case caps are different... */
+		for (s = part->pmPartType; *s; s++)
+			if ((*s >= 'a') && (*s <= 'z'))
+				*s = (*s - 'a' + 'A');
+
+		if (0 == strcmp(part->pmPartType, PART_TYPE_OPENBSD)) {
+			/* FOUND OUR PARTITION!!! */
+			printf("found OpenBSD DPME partition\n");
+			if(strategy(devp, F_READ, part->pmPyPartStart,
+				DEV_BSIZE, buf, &read) == 0
+				&& read == DEV_BSIZE)
+			{
+				if (!getdisklabel(buf, lp))
+					return 0;
+
+				/* If we have an OpenBSD region
+				 * but no valid parition table,
+				 * we cannot load a kernel from
+				 * it, punt.
+				 * should not have more than one
+				 * OpenBSD of DPME type.
+				 */
+				return ERDLAB;
+			}
+		}
+	}
+	return ERDLAB;
+}
+
+/*
+ * Find a valid disklabel.
+ */
+static int
+search_label(devp, off, buf, lp, off0)
+	struct of_dev *devp;
+	u_long off;
+	char *buf;
+	struct disklabel *lp;
+	u_long off0;
+{
+	size_t read;
+	struct dos_partition *p;
+	int i;
+	u_long poff;
+	static int recursion;
+
+	if (strategy(devp, F_READ, off, DEV_BSIZE, buf, &read) ||
+	    read != DEV_BSIZE)
+		return ERDLAB;
+
+	if (buf[510] != 0x55 || buf[511] != 0xaa)
+		return ERDLAB;
+
+	if (recursion++ <= 1)
+		off0 += off;
+	for (p = (struct dos_partition *)(buf + DOSPARTOFF), i = 4;
+	    --i >= 0; p++) {
+		if (p->dp_typ == DOSPTYP_OPENBSD) {
+			poff = get_long(&p->dp_start) + off0;
+			if (strategy(devp, F_READ, poff + LABELSECTOR,
+			    DEV_BSIZE, buf, &read) == 0
+			    && read == DEV_BSIZE) {
+				if (!getdisklabel(buf, lp)) {
+					recursion--;
+					return 0;
+				}
+			}
+			if (strategy(devp, F_READ, off, DEV_BSIZE, buf, &read)
+			    || read != DEV_BSIZE) {
+				recursion--;
+				return ERDLAB;
+			}
+		} else if (p->dp_typ == DOSPTYP_EXTEND) {
+			poff = get_long(&p->dp_start);
+			if (!search_label(devp, poff, buf, lp, off0)) {
+				recursion--;
+				return 0;
+			}
+			if (strategy(devp, F_READ, off, DEV_BSIZE, buf, &read)
+			    || read != DEV_BSIZE) {
+				recursion--;
+				return ERDLAB;
+			}
+		}
+	}
+	recursion--;
+	return ERDLAB;
+}
+
+int
+devopen(struct open_file *of, const char *name, char **file)
+{
+	char *cp;
+	char partition;
+	char fname[256];
+	char buf[DEV_BSIZE];
+	struct disklabel label;
+	int handle, part;
+	size_t read;
+	int error = 0;
+
+	if (ofdev.handle != -1)
+		panic("devopen");
+	if (of->f_flags != F_READ)
+		return EPERM;
+	strlcpy(fname, name, sizeof fname);
+	cp = filename(fname, &partition);
+	if (cp) {
+		strlcpy(buf, cp, sizeof buf);
+		*cp = 0;
+	}
+	if (!cp || !*buf)
+		strlcpy(buf, DEFAULT_KERNEL, sizeof buf);
+	if (!*fname)
+		strlcpy(fname, bootdev, sizeof fname);
+	strlcpy(opened_name, fname, sizeof opened_name);
+	if (partition) {
+		cp = opened_name + strlen(opened_name);
+		*cp++ = ':';
+		*cp++ = partition;
+		*cp = 0;
+	}
+	if (*buf != '/')
+		strlcat(opened_name, "/", sizeof opened_name);
+	strlcat(opened_name, buf, sizeof opened_name);
+	*file = opened_name + strlen(fname) + 1;
+	if ((handle = OF_finddevice(fname)) == -1)
+		return ENOENT;
+	if (OF_getprop(handle, "name", buf, sizeof buf) < 0)
+		return ENXIO;
+	if (OF_getprop(handle, "device_type", buf, sizeof buf) < 0)
+		return ENXIO;
+	if (!strcmp(buf, "block"))
+		/*
+		 * For block devices, indicate raw partition
+		 * (:0 in OpenFirmware)
+		 */
+		strlcat(fname, ":0", sizeof fname);
+	if ((handle = OF_open(fname)) == -1)
+		return ENXIO;
+	bzero(&ofdev, sizeof ofdev);
+	ofdev.handle = handle;
+	ofdev.dmabuf = NULL;
+	OF_call_method("dma-alloc", handle, 1, 1, MAXPHYS, &ofdev.dmabuf);
+	if (!strcmp(buf, "block")) {
+		ofdev.type = OFDEV_DISK;
+		ofdev.bsize = DEV_BSIZE;
+		/* First try to find a disklabel without MBR partitions */
+		if (strategy(&ofdev, F_READ,
+		    LABELSECTOR, DEV_BSIZE, buf, &read) != 0 ||
+		    read != DEV_BSIZE ||
+		    getdisklabel(buf, &label)) {
+			/* Else try MBR partitions */
+			error = read_mac_label(&ofdev, buf, &label);
+			if (error == ERDLAB)
+				error = search_label(&ofdev, 0, buf, &label, 0);
+
+			if (error && error != ERDLAB)
+				goto bad;
+		}
+
+		if (error == ERDLAB) {
+			if (partition)
+				/*
+				 * User specified a partition,
+				 * but there is none
+				 */
+				goto bad;
+			/* No label, just use complete disk */
+			ofdev.partoff = 0;
+		} else {
+			part = partition ? partition - 'a' : 0;
+			ofdev.partoff = label.d_partitions[part].p_offset;
+		}
+
+		of->f_dev = devsw;
+		of->f_devdata = &ofdev;
+		bcopy(&file_system_ufs, file_system, sizeof file_system[0]);
+		bcopy(&file_system_cd9660, file_system + 1,
+		    sizeof file_system[0]);
+		bcopy(&file_system_hfs, file_system + 2,
+		    sizeof file_system[0]);
+		nfsys = 3;
+		return 0;
+	}
+	if (!strcmp(buf, "network")) {
+		ofdev.type = OFDEV_NET;
+		of->f_dev = devsw;
+		of->f_devdata = &ofdev;
+		bcopy(&file_system_nfs, file_system, sizeof file_system[0]);
+		nfsys = 1;
+		if (error = net_open(&ofdev))
+			goto bad;
+		return 0;
+	}
+	error = EFTYPE;
+bad:
+	OF_close(handle);
+	ofdev.handle = -1;
+	return error;
+}