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fe8c2806 WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Raymond Lo, lo@routefree.com | |
4 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
5 | * | |
6 | * See file CREDITS for list of people who contributed to this | |
7 | * project. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License as | |
11 | * published by the Free Software Foundation; either version 2 of | |
12 | * the License, or (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
22 | * MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | /* | |
26 | * Support for harddisk partitions. | |
27 | * | |
28 | * To be compatible with LinuxPPC and Apple we use the standard Apple | |
29 | * SCSI disk partitioning scheme. For more information see: | |
30 | * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92 | |
31 | */ | |
32 | ||
33 | #include <common.h> | |
34 | #include <command.h> | |
35 | #include <ide.h> | |
fe8c2806 WD |
36 | #include "part_dos.h" |
37 | ||
149dded2 WD |
38 | #if ((CONFIG_COMMANDS & CFG_CMD_IDE) || \ |
39 | (CONFIG_COMMANDS & CFG_CMD_SCSI) || \ | |
40 | (CONFIG_COMMANDS & CFG_CMD_USB) ) && defined(CONFIG_DOS_PARTITION) | |
fe8c2806 WD |
41 | |
42 | /* Convert char[4] in little endian format to the host format integer | |
43 | */ | |
44 | static inline int le32_to_int(unsigned char *le32) | |
45 | { | |
46 | return ((le32[3] << 24) + | |
47 | (le32[2] << 16) + | |
48 | (le32[1] << 8) + | |
49 | le32[0] | |
50 | ); | |
51 | } | |
52 | ||
53 | static inline int is_extended(int part_type) | |
54 | { | |
55 | return (part_type == 0x5 || | |
56 | part_type == 0xf || | |
57 | part_type == 0x85); | |
58 | } | |
59 | ||
60 | static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num) | |
61 | { | |
62 | int lba_start = ext_part_sector + le32_to_int (p->start4); | |
63 | int lba_size = le32_to_int (p->size4); | |
64 | ||
65 | printf ("%5d\t\t%10d\t%10d\t%2x%s\n", | |
66 | part_num, lba_start, lba_size, p->sys_ind, | |
67 | (is_extended (p->sys_ind) ? " Extd" : "")); | |
68 | } | |
69 | ||
7205e407 WD |
70 | static int test_block_type(unsigned char *buffer) |
71 | { | |
72 | if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) || | |
73 | (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) { | |
74 | return (-1); | |
75 | } /* no DOS Signature at all */ | |
76 | if(strncmp(&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0) | |
77 | return DOS_PBR; /* is PBR */ | |
78 | return DOS_MBR; /* Is MBR */ | |
79 | } | |
80 | ||
fe8c2806 | 81 | |
fe8c2806 WD |
82 | int test_part_dos (block_dev_desc_t *dev_desc) |
83 | { | |
84 | unsigned char buffer[DEFAULT_SECTOR_SIZE]; | |
85 | ||
86 | if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) || | |
87 | (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) || | |
88 | (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) { | |
8bde7f77 | 89 | return (-1); |
fe8c2806 WD |
90 | } |
91 | return (0); | |
92 | } | |
93 | ||
94 | /* Print a partition that is relative to its Extended partition table | |
95 | */ | |
96 | static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative, | |
97 | int part_num) | |
98 | { | |
99 | unsigned char buffer[DEFAULT_SECTOR_SIZE]; | |
100 | dos_partition_t *pt; | |
101 | int i; | |
102 | ||
103 | if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) { | |
104 | printf ("** Can't read partition table on %d:%d **\n", | |
105 | dev_desc->dev, ext_part_sector); | |
106 | return; | |
107 | } | |
7205e407 WD |
108 | i=test_block_type(buffer); |
109 | if(i==-1) { | |
fe8c2806 WD |
110 | printf ("bad MBR sector signature 0x%02x%02x\n", |
111 | buffer[DOS_PART_MAGIC_OFFSET], | |
112 | buffer[DOS_PART_MAGIC_OFFSET + 1]); | |
113 | return; | |
114 | } | |
7205e407 WD |
115 | if(i==DOS_PBR) { |
116 | printf (" 1\t\t 0\t%10ld\t%2x\n", | |
117 | dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]); | |
118 | return; | |
119 | } | |
fe8c2806 WD |
120 | /* Print all primary/logical partitions */ |
121 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
122 | for (i = 0; i < 4; i++, pt++) { | |
123 | /* | |
8bde7f77 | 124 | * fdisk does not show the extended partitions that |
fe8c2806 WD |
125 | * are not in the MBR |
126 | */ | |
127 | ||
128 | if ((pt->sys_ind != 0) && | |
129 | (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) { | |
130 | print_one_part (pt, ext_part_sector, part_num); | |
131 | } | |
132 | ||
133 | /* Reverse engr the fdisk part# assignment rule! */ | |
134 | if ((ext_part_sector == 0) || | |
135 | (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) { | |
136 | part_num++; | |
137 | } | |
138 | } | |
139 | ||
140 | /* Follows the extended partitions */ | |
141 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
142 | for (i = 0; i < 4; i++, pt++) { | |
143 | if (is_extended (pt->sys_ind)) { | |
144 | int lba_start = le32_to_int (pt->start4) + relative; | |
145 | ||
146 | print_partition_extended (dev_desc, lba_start, | |
147 | ext_part_sector == 0 ? lba_start | |
148 | : relative, | |
149 | part_num); | |
150 | } | |
151 | } | |
152 | ||
153 | return; | |
154 | } | |
155 | ||
156 | ||
157 | /* Print a partition that is relative to its Extended partition table | |
158 | */ | |
159 | static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector, | |
160 | int relative, int part_num, | |
161 | int which_part, disk_partition_t *info) | |
162 | { | |
163 | unsigned char buffer[DEFAULT_SECTOR_SIZE]; | |
164 | dos_partition_t *pt; | |
165 | int i; | |
166 | ||
167 | if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) { | |
168 | printf ("** Can't read partition table on %d:%d **\n", | |
169 | dev_desc->dev, ext_part_sector); | |
170 | return -1; | |
171 | } | |
172 | if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 || | |
173 | buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) { | |
174 | printf ("bad MBR sector signature 0x%02x%02x\n", | |
175 | buffer[DOS_PART_MAGIC_OFFSET], | |
176 | buffer[DOS_PART_MAGIC_OFFSET + 1]); | |
177 | return -1; | |
178 | } | |
179 | ||
180 | /* Print all primary/logical partitions */ | |
181 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
182 | for (i = 0; i < 4; i++, pt++) { | |
183 | /* | |
8bde7f77 WD |
184 | * fdisk does not show the extended partitions that |
185 | * are not in the MBR | |
fe8c2806 | 186 | */ |
7f70e853 WD |
187 | if ((pt->sys_ind != 0) && |
188 | (part_num == which_part) && | |
189 | (is_extended(pt->sys_ind) == 0)) { | |
fe8c2806 WD |
190 | info->blksz = 512; |
191 | info->start = ext_part_sector + le32_to_int (pt->start4); | |
192 | info->size = le32_to_int (pt->size4); | |
193 | switch(dev_desc->if_type) { | |
194 | case IF_TYPE_IDE: | |
195 | case IF_TYPE_ATAPI: | |
196 | sprintf (info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num); | |
197 | break; | |
198 | case IF_TYPE_SCSI: | |
199 | sprintf (info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num); | |
200 | break; | |
201 | case IF_TYPE_USB: | |
202 | sprintf (info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num); | |
203 | break; | |
204 | case IF_TYPE_DOC: | |
205 | sprintf (info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num); | |
206 | break; | |
207 | default: | |
208 | sprintf (info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num); | |
209 | break; | |
210 | } | |
211 | /* sprintf(info->type, "%d, pt->sys_ind); */ | |
212 | sprintf (info->type, "U-Boot"); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | /* Reverse engr the fdisk part# assignment rule! */ | |
217 | if ((ext_part_sector == 0) || | |
218 | (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) { | |
219 | part_num++; | |
220 | } | |
221 | } | |
222 | ||
223 | /* Follows the extended partitions */ | |
224 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
225 | for (i = 0; i < 4; i++, pt++) { | |
226 | if (is_extended (pt->sys_ind)) { | |
227 | int lba_start = le32_to_int (pt->start4) + relative; | |
228 | ||
229 | return get_partition_info_extended (dev_desc, lba_start, | |
230 | ext_part_sector == 0 ? lba_start : relative, | |
231 | part_num, which_part, info); | |
232 | } | |
233 | } | |
234 | return -1; | |
235 | } | |
236 | ||
237 | void print_part_dos (block_dev_desc_t *dev_desc) | |
238 | { | |
239 | printf ("Partition Start Sector Num Sectors Type\n"); | |
240 | print_partition_extended (dev_desc, 0, 0, 1); | |
241 | } | |
242 | ||
243 | int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info) | |
244 | { | |
245 | return get_partition_info_extended (dev_desc, 0, 0, 1, part, info); | |
246 | } | |
247 | ||
248 | ||
fe8c2806 | 249 | #endif /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_DOS_PARTITION */ |