--- /dev/null
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * 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 "part_mac.h"
+
+#ifdef HAVE_BLOCK_DEVICE
+
+/* 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)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
+ ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
+ 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;
+ ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
+ ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
+ 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)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
+ ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
+
+ 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
Code Review / kvmfornfv.git / blobdiff