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