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fe8c2806 WD |
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 */ |