1 /* 2 * (C) Copyright 2000 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 /* 25 * Support for harddisk partitions. 26 * 27 * To be compatible with LinuxPPC and Apple we use the standard Apple 28 * SCSI disk partitioning scheme. For more information see: 29 * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92 30 */ 31 32 #include <common.h> 33 #include <command.h> 34 #include <ide.h> 35 #include <cmd_disk.h> 36 #include "part_mac.h" 37 38 #if ((CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI)) && defined(CONFIG_MAC_PARTITION) 39 40 /* stdlib.h causes some compatibility problems; should fixe these! -- wd */ 41 #ifndef __ldiv_t_defined 42 typedef struct { 43 long int quot; /* Quotient */ 44 long int rem; /* Remainder */ 45 } ldiv_t; 46 extern ldiv_t ldiv (long int __numer, long int __denom); 47 # define __ldiv_t_defined 1 48 #endif 49 50 51 static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p); 52 static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p); 53 54 /* 55 * Test for a valid MAC partition 56 */ 57 int test_part_mac (block_dev_desc_t *dev_desc) 58 { 59 mac_driver_desc_t ddesc; 60 mac_partition_t mpart; 61 ulong i, n; 62 63 if (part_mac_read_ddb (dev_desc, &ddesc)) { 64 /* error reading Driver Desriptor Block, or no valid Signature */ 65 return (-1); 66 } 67 68 n = 1; /* assuming at least one partition */ 69 for (i=1; i<=n; ++i) { 70 if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)&mpart) != 1) || 71 (mpart.signature != MAC_PARTITION_MAGIC) ) { 72 return (-1); 73 } 74 /* update partition count */ 75 n = mpart.map_count; 76 } 77 return (0); 78 } 79 80 81 void print_part_mac (block_dev_desc_t *dev_desc) 82 { 83 ulong i, n; 84 mac_driver_desc_t ddesc; 85 mac_partition_t mpart; 86 ldiv_t mb, gb; 87 88 if (part_mac_read_ddb (dev_desc, &ddesc)) { 89 /* error reading Driver Desriptor Block, or no valid Signature */ 90 return; 91 } 92 93 n = ddesc.blk_count; 94 95 mb = ldiv(n, ((1024 * 1024) / ddesc.blk_size)); /* MB */ 96 /* round to 1 digit */ 97 mb.rem *= 10 * ddesc.blk_size; 98 mb.rem += 512 * 1024; 99 mb.rem /= 1024 * 1024; 100 101 gb = ldiv(10 * mb.quot + mb.rem, 10240); 102 gb.rem += 512; 103 gb.rem /= 1024; 104 105 106 printf ("Block Size=%d, Number of Blocks=%d, " 107 "Total Capacity: %ld.%ld MB = %ld.%ld GB\n" 108 "DeviceType=0x%x, DeviceId=0x%x\n\n" 109 " #: type name" 110 " length base (size)\n", 111 ddesc.blk_size, 112 ddesc.blk_count, 113 mb.quot, mb.rem, gb.quot, gb.rem, 114 ddesc.dev_type, ddesc.dev_id 115 ); 116 117 n = 1; /* assuming at least one partition */ 118 for (i=1; i<=n; ++i) { 119 ulong bytes; 120 char c; 121 122 printf ("%4ld: ", i); 123 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)&mpart) != 1) { 124 printf ("** Can't read Partition Map on %d:%ld **\n", 125 dev_desc->dev, i); 126 return; 127 } 128 129 if (mpart.signature != MAC_PARTITION_MAGIC) { 130 printf ("** Bad Signature on %d:%ld - " 131 "expected 0x%04x, got 0x%04x\n", 132 dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart.signature); 133 return; 134 } 135 136 /* update partition count */ 137 n = mpart.map_count; 138 139 c = 'k'; 140 bytes = mpart.block_count; 141 bytes /= (1024 / ddesc.blk_size); /* kB; assumes blk_size == 512 */ 142 if (bytes >= 1024) { 143 bytes >>= 10; 144 c = 'M'; 145 } 146 if (bytes >= 1024) { 147 bytes >>= 10; 148 c = 'G'; 149 } 150 151 printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n", 152 mpart.type, 153 mpart.name, 154 mpart.block_count, 155 mpart.start_block, 156 bytes, c 157 ); 158 } 159 160 return; 161 } 162 163 164 /* 165 * Read Device Descriptor Block 166 */ 167 static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p) 168 { 169 if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)ddb_p) != 1) { 170 printf ("** Can't read Driver Desriptor Block **\n"); 171 return (-1); 172 } 173 174 if (ddb_p->signature != MAC_DRIVER_MAGIC) { 175 #if 0 176 printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n", 177 MAC_DRIVER_MAGIC, ddb_p->signature); 178 #endif 179 return (-1); 180 } 181 return (0); 182 } 183 184 /* 185 * Read Partition Descriptor Block 186 */ 187 static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p) 188 { 189 int n = 1; 190 191 for (;;) { 192 /* 193 * We must always read the descritpor block for 194 * partition 1 first since this is the only way to 195 * know how many partitions we have. 196 */ 197 if (dev_desc->block_read (dev_desc->dev, n, 1, (ulong *)pdb_p) != 1) { 198 printf ("** Can't read Partition Map on %d:%d **\n", 199 dev_desc->dev, n); 200 return (-1); 201 } 202 203 if (pdb_p->signature != MAC_PARTITION_MAGIC) { 204 printf ("** Bad Signature on %d:%d: " 205 "expected 0x%04x, got 0x%04x\n", 206 dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature); 207 return (-1); 208 } 209 210 if (n == part) 211 return (0); 212 213 if ((part < 1) || (part > pdb_p->map_count)) { 214 printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n", 215 dev_desc->dev, part, 216 dev_desc->dev, 217 dev_desc->dev, pdb_p->map_count); 218 return (-1); 219 } 220 221 /* update partition count */ 222 n = part; 223 } 224 225 /* NOTREACHED */ 226 } 227 228 int get_partition_info_mac (block_dev_desc_t *dev_desc, int part, disk_partition_t *info) 229 { 230 mac_driver_desc_t ddesc; 231 mac_partition_t mpart; 232 233 if (part_mac_read_ddb (dev_desc, &ddesc)) { 234 return (-1); 235 } 236 237 info->blksz = ddesc.blk_size; 238 239 if (part_mac_read_pdb (dev_desc, part, &mpart)) { 240 return (-1); 241 } 242 243 info->start = mpart.start_block; 244 info->size = mpart.block_count; 245 memcpy (info->type, mpart.type, sizeof(info->type)); 246 memcpy (info->name, mpart.name, sizeof(info->name)); 247 248 return (0); 249 } 250 251 #endif /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_MAC_PARTITION */ 252