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 "part_mac.h" 36 37 #if defined(CONFIG_CMD_IDE) || \ 38 defined(CONFIG_CMD_MG_DISK) || \ 39 defined(CONFIG_CMD_SCSI) || \ 40 defined(CONFIG_CMD_SATA) || \ 41 defined(CONFIG_CMD_USB) || \ 42 defined(CONFIG_MMC) || \ 43 defined(CONFIG_SYSTEMACE) 44 45 /* stdlib.h causes some compatibility problems; should fixe these! -- wd */ 46 #ifndef __ldiv_t_defined 47 typedef struct { 48 long int quot; /* Quotient */ 49 long int rem; /* Remainder */ 50 } ldiv_t; 51 extern ldiv_t ldiv (long int __numer, long int __denom); 52 # define __ldiv_t_defined 1 53 #endif 54 55 56 static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p); 57 static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p); 58 59 /* 60 * Test for a valid MAC partition 61 */ 62 int test_part_mac (block_dev_desc_t *dev_desc) 63 { 64 mac_driver_desc_t ddesc; 65 mac_partition_t mpart; 66 ulong i, n; 67 68 if (part_mac_read_ddb (dev_desc, &ddesc)) { 69 /* error reading Driver Desriptor Block, or no valid Signature */ 70 return (-1); 71 } 72 73 n = 1; /* assuming at least one partition */ 74 for (i=1; i<=n; ++i) { 75 if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)&mpart) != 1) || 76 (mpart.signature != MAC_PARTITION_MAGIC) ) { 77 return (-1); 78 } 79 /* update partition count */ 80 n = mpart.map_count; 81 } 82 return (0); 83 } 84 85 86 void print_part_mac (block_dev_desc_t *dev_desc) 87 { 88 ulong i, n; 89 mac_driver_desc_t ddesc; 90 mac_partition_t mpart; 91 ldiv_t mb, gb; 92 93 if (part_mac_read_ddb (dev_desc, &ddesc)) { 94 /* error reading Driver Desriptor Block, or no valid Signature */ 95 return; 96 } 97 98 n = ddesc.blk_count; 99 100 mb = ldiv(n, ((1024 * 1024) / ddesc.blk_size)); /* MB */ 101 /* round to 1 digit */ 102 mb.rem *= 10 * ddesc.blk_size; 103 mb.rem += 512 * 1024; 104 mb.rem /= 1024 * 1024; 105 106 gb = ldiv(10 * mb.quot + mb.rem, 10240); 107 gb.rem += 512; 108 gb.rem /= 1024; 109 110 111 printf ("Block Size=%d, Number of Blocks=%d, " 112 "Total Capacity: %ld.%ld MB = %ld.%ld GB\n" 113 "DeviceType=0x%x, DeviceId=0x%x\n\n" 114 " #: type name" 115 " length base (size)\n", 116 ddesc.blk_size, 117 ddesc.blk_count, 118 mb.quot, mb.rem, gb.quot, gb.rem, 119 ddesc.dev_type, ddesc.dev_id 120 ); 121 122 n = 1; /* assuming at least one partition */ 123 for (i=1; i<=n; ++i) { 124 ulong bytes; 125 char c; 126 127 printf ("%4ld: ", i); 128 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)&mpart) != 1) { 129 printf ("** Can't read Partition Map on %d:%ld **\n", 130 dev_desc->dev, i); 131 return; 132 } 133 134 if (mpart.signature != MAC_PARTITION_MAGIC) { 135 printf ("** Bad Signature on %d:%ld - " 136 "expected 0x%04x, got 0x%04x\n", 137 dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart.signature); 138 return; 139 } 140 141 /* update partition count */ 142 n = mpart.map_count; 143 144 c = 'k'; 145 bytes = mpart.block_count; 146 bytes /= (1024 / ddesc.blk_size); /* kB; assumes blk_size == 512 */ 147 if (bytes >= 1024) { 148 bytes >>= 10; 149 c = 'M'; 150 } 151 if (bytes >= 1024) { 152 bytes >>= 10; 153 c = 'G'; 154 } 155 156 printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n", 157 mpart.type, 158 mpart.name, 159 mpart.block_count, 160 mpart.start_block, 161 bytes, c 162 ); 163 } 164 165 return; 166 } 167 168 169 /* 170 * Read Device Descriptor Block 171 */ 172 static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p) 173 { 174 if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)ddb_p) != 1) { 175 printf ("** Can't read Driver Desriptor Block **\n"); 176 return (-1); 177 } 178 179 if (ddb_p->signature != MAC_DRIVER_MAGIC) { 180 #if 0 181 printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n", 182 MAC_DRIVER_MAGIC, ddb_p->signature); 183 #endif 184 return (-1); 185 } 186 return (0); 187 } 188 189 /* 190 * Read Partition Descriptor Block 191 */ 192 static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p) 193 { 194 int n = 1; 195 196 for (;;) { 197 /* 198 * We must always read the descritpor block for 199 * partition 1 first since this is the only way to 200 * know how many partitions we have. 201 */ 202 if (dev_desc->block_read (dev_desc->dev, n, 1, (ulong *)pdb_p) != 1) { 203 printf ("** Can't read Partition Map on %d:%d **\n", 204 dev_desc->dev, n); 205 return (-1); 206 } 207 208 if (pdb_p->signature != MAC_PARTITION_MAGIC) { 209 printf ("** Bad Signature on %d:%d: " 210 "expected 0x%04x, got 0x%04x\n", 211 dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature); 212 return (-1); 213 } 214 215 if (n == part) 216 return (0); 217 218 if ((part < 1) || (part > pdb_p->map_count)) { 219 printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n", 220 dev_desc->dev, part, 221 dev_desc->dev, 222 dev_desc->dev, pdb_p->map_count); 223 return (-1); 224 } 225 226 /* update partition count */ 227 n = part; 228 } 229 230 /* NOTREACHED */ 231 } 232 233 int get_partition_info_mac (block_dev_desc_t *dev_desc, int part, disk_partition_t *info) 234 { 235 mac_driver_desc_t ddesc; 236 mac_partition_t mpart; 237 238 if (part_mac_read_ddb (dev_desc, &ddesc)) { 239 return (-1); 240 } 241 242 info->blksz = ddesc.blk_size; 243 244 if (part_mac_read_pdb (dev_desc, part, &mpart)) { 245 return (-1); 246 } 247 248 info->start = mpart.start_block; 249 info->size = mpart.block_count; 250 memcpy (info->type, mpart.type, sizeof(info->type)); 251 memcpy (info->name, mpart.name, sizeof(info->name)); 252 253 return (0); 254 } 255 256 #endif 257