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1 | /* | |
2 | * (C) Copyright 2000 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | /* | |
9 | * Support for harddisk partitions. | |
10 | * | |
11 | * To be compatible with LinuxPPC and Apple we use the standard Apple | |
12 | * SCSI disk partitioning scheme. For more information see: | |
13 | * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92 | |
14 | */ | |
15 | ||
16 | #include <common.h> | |
17 | #include <command.h> | |
18 | #include <memalign.h> | |
19 | #include <ide.h> | |
20 | #include "part_mac.h" | |
21 | ||
22 | #ifdef HAVE_BLOCK_DEVICE | |
23 | ||
24 | /* stdlib.h causes some compatibility problems; should fixe these! -- wd */ | |
25 | #ifndef __ldiv_t_defined | |
26 | typedef struct { | |
27 | long int quot; /* Quotient */ | |
28 | long int rem; /* Remainder */ | |
29 | } ldiv_t; | |
30 | extern ldiv_t ldiv (long int __numer, long int __denom); | |
31 | # define __ldiv_t_defined 1 | |
32 | #endif | |
33 | ||
34 | ||
35 | static int part_mac_read_ddb(struct blk_desc *dev_desc, | |
36 | mac_driver_desc_t *ddb_p); | |
37 | static int part_mac_read_pdb(struct blk_desc *dev_desc, int part, | |
38 | mac_partition_t *pdb_p); | |
39 | ||
40 | /* | |
41 | * Test for a valid MAC partition | |
42 | */ | |
43 | static int part_test_mac(struct blk_desc *dev_desc) | |
44 | { | |
45 | ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1); | |
46 | ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1); | |
47 | ulong i, n; | |
48 | ||
49 | if (part_mac_read_ddb (dev_desc, ddesc)) { | |
50 | /* | |
51 | * error reading Driver Descriptor Block, | |
52 | * or no valid Signature | |
53 | */ | |
54 | return (-1); | |
55 | } | |
56 | ||
57 | n = 1; /* assuming at least one partition */ | |
58 | for (i=1; i<=n; ++i) { | |
59 | if ((blk_dread(dev_desc, i, 1, (ulong *)mpart) != 1) || | |
60 | (mpart->signature != MAC_PARTITION_MAGIC) ) { | |
61 | return (-1); | |
62 | } | |
63 | /* update partition count */ | |
64 | n = mpart->map_count; | |
65 | } | |
66 | return (0); | |
67 | } | |
68 | ||
69 | static void part_print_mac(struct blk_desc *dev_desc) | |
70 | { | |
71 | ulong i, n; | |
72 | ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1); | |
73 | ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1); | |
74 | ldiv_t mb, gb; | |
75 | ||
76 | if (part_mac_read_ddb (dev_desc, ddesc)) { | |
77 | /* | |
78 | * error reading Driver Descriptor Block, | |
79 | * or no valid Signature | |
80 | */ | |
81 | return; | |
82 | } | |
83 | ||
84 | n = ddesc->blk_count; | |
85 | ||
86 | mb = ldiv(n, ((1024 * 1024) / ddesc->blk_size)); /* MB */ | |
87 | /* round to 1 digit */ | |
88 | mb.rem *= 10 * ddesc->blk_size; | |
89 | mb.rem += 512 * 1024; | |
90 | mb.rem /= 1024 * 1024; | |
91 | ||
92 | gb = ldiv(10 * mb.quot + mb.rem, 10240); | |
93 | gb.rem += 512; | |
94 | gb.rem /= 1024; | |
95 | ||
96 | ||
97 | printf ("Block Size=%d, Number of Blocks=%d, " | |
98 | "Total Capacity: %ld.%ld MB = %ld.%ld GB\n" | |
99 | "DeviceType=0x%x, DeviceId=0x%x\n\n" | |
100 | " #: type name" | |
101 | " length base (size)\n", | |
102 | ddesc->blk_size, | |
103 | ddesc->blk_count, | |
104 | mb.quot, mb.rem, gb.quot, gb.rem, | |
105 | ddesc->dev_type, ddesc->dev_id | |
106 | ); | |
107 | ||
108 | n = 1; /* assuming at least one partition */ | |
109 | for (i=1; i<=n; ++i) { | |
110 | ulong bytes; | |
111 | char c; | |
112 | ||
113 | printf ("%4ld: ", i); | |
114 | if (blk_dread(dev_desc, i, 1, (ulong *)mpart) != 1) { | |
115 | printf ("** Can't read Partition Map on %d:%ld **\n", | |
116 | dev_desc->devnum, i); | |
117 | return; | |
118 | } | |
119 | ||
120 | if (mpart->signature != MAC_PARTITION_MAGIC) { | |
121 | printf("** Bad Signature on %d:%ld - expected 0x%04x, got 0x%04x\n", | |
122 | dev_desc->devnum, i, MAC_PARTITION_MAGIC, | |
123 | mpart->signature); | |
124 | return; | |
125 | } | |
126 | ||
127 | /* update partition count */ | |
128 | n = mpart->map_count; | |
129 | ||
130 | c = 'k'; | |
131 | bytes = mpart->block_count; | |
132 | bytes /= (1024 / ddesc->blk_size); /* kB; assumes blk_size == 512 */ | |
133 | if (bytes >= 1024) { | |
134 | bytes >>= 10; | |
135 | c = 'M'; | |
136 | } | |
137 | if (bytes >= 1024) { | |
138 | bytes >>= 10; | |
139 | c = 'G'; | |
140 | } | |
141 | ||
142 | printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n", | |
143 | mpart->type, | |
144 | mpart->name, | |
145 | mpart->block_count, | |
146 | mpart->start_block, | |
147 | bytes, c | |
148 | ); | |
149 | } | |
150 | ||
151 | return; | |
152 | } | |
153 | ||
154 | ||
155 | /* | |
156 | * Read Device Descriptor Block | |
157 | */ | |
158 | static int part_mac_read_ddb(struct blk_desc *dev_desc, | |
159 | mac_driver_desc_t *ddb_p) | |
160 | { | |
161 | if (blk_dread(dev_desc, 0, 1, (ulong *)ddb_p) != 1) { | |
162 | debug("** Can't read Driver Descriptor Block **\n"); | |
163 | return (-1); | |
164 | } | |
165 | ||
166 | if (ddb_p->signature != MAC_DRIVER_MAGIC) { | |
167 | return (-1); | |
168 | } | |
169 | return (0); | |
170 | } | |
171 | ||
172 | /* | |
173 | * Read Partition Descriptor Block | |
174 | */ | |
175 | static int part_mac_read_pdb(struct blk_desc *dev_desc, int part, | |
176 | mac_partition_t *pdb_p) | |
177 | { | |
178 | int n = 1; | |
179 | ||
180 | for (;;) { | |
181 | /* | |
182 | * We must always read the descritpor block for | |
183 | * partition 1 first since this is the only way to | |
184 | * know how many partitions we have. | |
185 | */ | |
186 | if (blk_dread(dev_desc, n, 1, (ulong *)pdb_p) != 1) { | |
187 | printf ("** Can't read Partition Map on %d:%d **\n", | |
188 | dev_desc->devnum, n); | |
189 | return (-1); | |
190 | } | |
191 | ||
192 | if (pdb_p->signature != MAC_PARTITION_MAGIC) { | |
193 | printf("** Bad Signature on %d:%d: expected 0x%04x, got 0x%04x\n", | |
194 | dev_desc->devnum, n, MAC_PARTITION_MAGIC, | |
195 | pdb_p->signature); | |
196 | return (-1); | |
197 | } | |
198 | ||
199 | if (n == part) | |
200 | return (0); | |
201 | ||
202 | if ((part < 1) || (part > pdb_p->map_count)) { | |
203 | printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n", | |
204 | dev_desc->devnum, part, | |
205 | dev_desc->devnum, | |
206 | dev_desc->devnum, pdb_p->map_count); | |
207 | return (-1); | |
208 | } | |
209 | ||
210 | /* update partition count */ | |
211 | n = part; | |
212 | } | |
213 | ||
214 | /* NOTREACHED */ | |
215 | } | |
216 | ||
217 | static int part_get_info_mac(struct blk_desc *dev_desc, int part, | |
218 | disk_partition_t *info) | |
219 | { | |
220 | ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1); | |
221 | ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1); | |
222 | ||
223 | if (part_mac_read_ddb (dev_desc, ddesc)) { | |
224 | return (-1); | |
225 | } | |
226 | ||
227 | info->blksz = ddesc->blk_size; | |
228 | ||
229 | if (part_mac_read_pdb (dev_desc, part, mpart)) { | |
230 | return (-1); | |
231 | } | |
232 | ||
233 | info->start = mpart->start_block; | |
234 | info->size = mpart->block_count; | |
235 | memcpy (info->type, mpart->type, sizeof(info->type)); | |
236 | memcpy (info->name, mpart->name, sizeof(info->name)); | |
237 | ||
238 | return (0); | |
239 | } | |
240 | ||
241 | U_BOOT_PART_TYPE(mac) = { | |
242 | .name = "MAC", | |
243 | .part_type = PART_TYPE_MAC, | |
244 | .max_entries = MAC_ENTRY_NUMBERS, | |
245 | .get_info = part_get_info_mac, | |
246 | .print = part_print_mac, | |
247 | .test = part_test_mac, | |
248 | }; | |
249 | #endif |