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