Initial revision

1 files changed, 251 insertions, 0 deletions

diff --git a/disk/part_mac.c b/disk/part_mac.c
new file mode 100644
index 0000000..ee9d170
--- /dev/null
+++ b/disk/part_mac.c
@@ -0,0 +1,251 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Support for harddisk partitions.
+ *
+ * To be compatible with LinuxPPC and Apple we use the standard Apple
+ * SCSI disk partitioning scheme. For more information see:
+ * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
+ */
+
+#include <common.h>
+#include <command.h>
+#include <ide.h>
+#include <cmd_disk.h>
+#include "part_mac.h"
+
+#if ((CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI)) && defined(CONFIG_MAC_PARTITION)
+
+/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
+#ifndef __ldiv_t_defined
+typedef struct {
+	long int quot;		/* Quotient	*/
+	long int rem;		/* Remainder	*/
+} ldiv_t;
+extern ldiv_t ldiv (long int __numer, long int __denom);
+# define __ldiv_t_defined	1
+#endif
+
+
+static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p);
+static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p);
+
+/*
+ * Test for a valid MAC partition
+ */
+int test_part_mac (block_dev_desc_t *dev_desc)
+{
+	mac_driver_desc_t	ddesc;
+	mac_partition_t		mpart;
+	ulong i, n;
+
+	if (part_mac_read_ddb (dev_desc, &ddesc)) {
+		/* error reading Driver Desriptor Block, or no valid Signature */
+		return (-1);
+	}
+
+	n = 1;	/* assuming at least one partition */
+	for (i=1; i<=n; ++i) {
+		if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)&mpart) != 1) ||
+		    (mpart.signature != MAC_PARTITION_MAGIC) ) {
+			return (-1);
+		}
+		/* update partition count */
+		n = mpart.map_count;
+	}
+	return (0);
+}
+
+
+void print_part_mac (block_dev_desc_t *dev_desc)
+{
+	ulong i, n;
+	mac_driver_desc_t	ddesc;
+	mac_partition_t		mpart;
+	ldiv_t mb, gb;
+
+	if (part_mac_read_ddb (dev_desc, &ddesc)) {
+		/* error reading Driver Desriptor Block, or no valid Signature */
+		return;
+	}
+
+	n  = ddesc.blk_count;
+
+	mb = ldiv(n, ((1024 * 1024) / ddesc.blk_size)); /* MB */
+	/* round to 1 digit */
+	mb.rem *= 10 * ddesc.blk_size;
+	mb.rem += 512 * 1024;
+	mb.rem /= 1024 * 1024;
+
+	gb = ldiv(10 * mb.quot + mb.rem, 10240);
+	gb.rem += 512;
+	gb.rem /= 1024;
+
+
+	printf ("Block Size=%d, Number of Blocks=%d, "
+		"Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
+		"DeviceType=0x%x, DeviceId=0x%x\n\n"
+		"   #:                 type name"
+		"                   length   base       (size)\n",
+		ddesc.blk_size,
+		ddesc.blk_count,
+		mb.quot, mb.rem, gb.quot, gb.rem,
+		ddesc.dev_type, ddesc.dev_id
+		);
+
+	n = 1;	/* assuming at least one partition */
+	for (i=1; i<=n; ++i) {
+		ulong bytes;
+		char c;
+
+		printf ("%4ld: ", i);
+		if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)&mpart) != 1) {
+			printf ("** Can't read Partition Map on %d:%ld **\n",
+				dev_desc->dev, i);
+			return;
+		}
+
+		if (mpart.signature != MAC_PARTITION_MAGIC) {
+			printf ("** Bad Signature on %d:%ld - "
+				"expected 0x%04x, got 0x%04x\n",
+				dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart.signature);
+			return;
+		}
+
+		/* update partition count */
+		n = mpart.map_count;
+
+		c      = 'k';
+		bytes  = mpart.block_count;
+		bytes /= (1024 / ddesc.blk_size);  /* kB; assumes blk_size == 512 */
+		if (bytes >= 1024) {
+			bytes >>= 10;
+			c = 'M';
+		}
+		if (bytes >= 1024) {
+			bytes >>= 10;
+			c = 'G';
+		}
+
+		printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
+			mpart.type,
+			mpart.name,
+			mpart.block_count,
+			mpart.start_block,
+			bytes, c
+			);
+	}
+
+	return;
+}
+
+
+/*
+ * Read Device Descriptor Block
+ */
+static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p)
+{
+	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)ddb_p) != 1) {
+		printf ("** Can't read Driver Desriptor Block **\n");
+		return (-1);
+	}
+
+	if (ddb_p->signature != MAC_DRIVER_MAGIC) {
+#if 0
+		printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n",
+			MAC_DRIVER_MAGIC, ddb_p->signature);
+#endif
+		return (-1);
+	}
+	return (0);
+}
+
+/*
+ * Read Partition Descriptor Block
+ */
+static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p)
+{
+	int n = 1;
+
+	for (;;) {
+		/*
+                 * We must always read the descritpor block for
+                 * partition 1 first since this is the only way to
+                 * know how many partitions we have.
+		 */
+		if (dev_desc->block_read (dev_desc->dev, n, 1, (ulong *)pdb_p) != 1) {
+			printf ("** Can't read Partition Map on %d:%d **\n",
+				dev_desc->dev, n);
+			return (-1);
+		}
+
+		if (pdb_p->signature != MAC_PARTITION_MAGIC) {
+			printf ("** Bad Signature on %d:%d: "
+				"expected 0x%04x, got 0x%04x\n",
+				dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature);
+			return (-1);
+		}
+
+		if (n == part)
+			return (0);
+
+		if ((part < 1) || (part > pdb_p->map_count)) {
+			printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
+				dev_desc->dev, part,
+				dev_desc->dev,
+				dev_desc->dev, pdb_p->map_count);
+			return (-1);
+		}
+
+		/* update partition count */
+		n = part;
+	}
+
+	/* NOTREACHED */
+}
+
+int get_partition_info_mac (block_dev_desc_t *dev_desc, int part, disk_partition_t *info)
+{
+	mac_driver_desc_t	ddesc;
+	mac_partition_t		mpart;
+
+	if (part_mac_read_ddb (dev_desc, &ddesc)) {
+		return (-1);
+	}
+
+	info->blksz = ddesc.blk_size;
+
+	if (part_mac_read_pdb (dev_desc, part, &mpart)) {
+		return (-1);
+	}
+
+	info->start = mpart.start_block;
+	info->size  = mpart.block_count;
+	memcpy (info->type, mpart.type, sizeof(info->type));
+	memcpy (info->name, mpart.name, sizeof(info->name));
+
+	return (0);
+}
+
+#endif	/* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_MAC_PARTITION */