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cc1c8a13 WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch. | |
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 | #include <common.h> | |
25 | #include <command.h> | |
cc1c8a13 WD |
26 | #include "part_iso.h" |
27 | ||
2c1af9dc | 28 | #ifdef HAVE_BLOCK_DEVICE |
cc1c8a13 | 29 | |
1968e615 | 30 | /* #define ISO_PART_DEBUG */ |
cc1c8a13 WD |
31 | |
32 | #ifdef ISO_PART_DEBUG | |
33 | #define PRINTF(fmt,args...) printf (fmt ,##args) | |
34 | #else | |
35 | #define PRINTF(fmt,args...) | |
36 | #endif | |
37 | ||
38 | /* enable this if CDs are written with the PowerPC Platform ID */ | |
39 | #undef CHECK_FOR_POWERPC_PLATTFORM | |
40 | #define CD_SECTSIZE 2048 | |
41 | ||
42 | static unsigned char tmpbuf[CD_SECTSIZE]; | |
43 | ||
44 | /* Convert char[4] in little endian format to the host format integer | |
45 | */ | |
46 | static inline unsigned long le32_to_int(unsigned char *le32) | |
47 | { | |
48 | return ((le32[3] << 24) + | |
49 | (le32[2] << 16) + | |
50 | (le32[1] << 8) + | |
51 | le32[0] | |
52 | ); | |
53 | } | |
54 | /* Convert char[2] in little endian format to the host format integer | |
55 | */ | |
56 | static inline unsigned short le16_to_int(unsigned char *le16) | |
57 | { | |
58 | return ((le16[1] << 8) + | |
59 | le16[0] | |
60 | ); | |
61 | } | |
62 | ||
63 | ||
64 | /* only boot records will be listed as valid partitions */ | |
65 | int get_partition_info_iso_verb(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info, int verb) | |
66 | { | |
67 | int i,offset,entry_num; | |
68 | unsigned short *chksumbuf; | |
69 | unsigned short chksum; | |
70 | unsigned long newblkaddr,blkaddr,lastsect,bootaddr; | |
71 | iso_boot_rec_t *pbr = (iso_boot_rec_t *)tmpbuf; /* boot record */ | |
72 | iso_pri_rec_t *ppr = (iso_pri_rec_t *)tmpbuf; /* primary desc */ | |
73 | iso_val_entry_t *pve = (iso_val_entry_t *)tmpbuf; | |
74 | iso_init_def_entry_t *pide; | |
75 | ||
d7ea4d4d EE |
76 | if (dev_desc->blksz != CD_SECTSIZE) |
77 | return -1; | |
78 | ||
cc1c8a13 WD |
79 | /* the first sector (sector 0x10) must be a primary volume desc */ |
80 | blkaddr=PVD_OFFSET; | |
81 | if (dev_desc->block_read (dev_desc->dev, PVD_OFFSET, 1, (ulong *) tmpbuf) != 1) | |
53677ef1 | 82 | return (-1); |
cc1c8a13 WD |
83 | if(ppr->desctype!=0x01) { |
84 | if(verb) | |
85 | printf ("** First descriptor is NOT a primary desc on %d:%d **\n", | |
86 | dev_desc->dev, part_num); | |
87 | return (-1); | |
88 | } | |
77ddac94 | 89 | if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) { |
cc1c8a13 WD |
90 | if(verb) |
91 | printf ("** Wrong ISO Ident: %s on %d:%d **\n", | |
92 | ppr->stand_ident,dev_desc->dev, part_num); | |
93 | return (-1); | |
94 | } | |
95 | lastsect= ((ppr->firstsek_LEpathtab1_LE & 0x000000ff)<<24) + | |
96 | ((ppr->firstsek_LEpathtab1_LE & 0x0000ff00)<< 8) + | |
97 | ((ppr->firstsek_LEpathtab1_LE & 0x00ff0000)>> 8) + | |
98 | ((ppr->firstsek_LEpathtab1_LE & 0xff000000)>>24) ; | |
99 | info->blksz=ppr->secsize_BE; /* assuming same block size for all entries */ | |
100 | PRINTF(" Lastsect:%08lx\n",lastsect); | |
101 | for(i=blkaddr;i<lastsect;i++) { | |
c7de829c | 102 | PRINTF("Reading block %d\n", i); |
cc1c8a13 | 103 | if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *) tmpbuf) != 1) |
53677ef1 | 104 | return (-1); |
cc1c8a13 WD |
105 | if(ppr->desctype==0x00) |
106 | break; /* boot entry found */ | |
107 | if(ppr->desctype==0xff) { | |
108 | if(verb) | |
109 | printf ("** No valid boot catalog found on %d:%d **\n", | |
110 | dev_desc->dev, part_num); | |
111 | return (-1); | |
112 | } | |
113 | } | |
53677ef1 | 114 | /* boot entry found */ |
cc1c8a13 WD |
115 | if(strncmp(pbr->ident_str,"EL TORITO SPECIFICATION",23)!=0) { |
116 | if(verb) | |
117 | printf ("** Wrong El Torito ident: %s on %d:%d **\n", | |
118 | pbr->ident_str,dev_desc->dev, part_num); | |
119 | return (-1); | |
120 | } | |
121 | bootaddr=le32_to_int(pbr->pointer); | |
122 | PRINTF(" Boot Entry at: %08lX\n",bootaddr); | |
123 | if (dev_desc->block_read (dev_desc->dev, bootaddr, 1, (ulong *) tmpbuf) != 1) { | |
124 | if(verb) | |
125 | printf ("** Can't read Boot Entry at %lX on %d:%d **\n", | |
126 | bootaddr,dev_desc->dev, part_num); | |
127 | return (-1); | |
128 | } | |
129 | chksum=0; | |
130 | chksumbuf = (unsigned short *)tmpbuf; | |
131 | for(i=0;i<0x10;i++) | |
132 | chksum+=((chksumbuf[i] &0xff)<<8)+((chksumbuf[i] &0xff00)>>8); | |
133 | if(chksum!=0) { | |
134 | if(verb) | |
135 | printf ("** Checksum Error in booting catalog validation entry on %d:%d **\n", | |
136 | dev_desc->dev, part_num); | |
137 | return (-1); | |
138 | } | |
139 | if((pve->key[0]!=0x55)||(pve->key[1]!=0xAA)) { | |
140 | if(verb) | |
141 | printf ("** Key 0x55 0xAA error on %d:%d **\n", | |
142 | dev_desc->dev, part_num); | |
143 | return(-1); | |
144 | } | |
145 | #ifdef CHECK_FOR_POWERPC_PLATTFORM | |
146 | if(pve->platform!=0x01) { | |
147 | if(verb) | |
148 | printf ("** No PowerPC platform CD on %d:%d **\n", | |
149 | dev_desc->dev, part_num); | |
150 | return(-1); | |
151 | } | |
152 | #endif | |
153 | /* the validation entry seems to be ok, now search the "partition" */ | |
154 | entry_num=0; | |
155 | offset=0x20; | |
77ddac94 | 156 | sprintf ((char *)info->type, "U-Boot"); |
cc1c8a13 WD |
157 | switch(dev_desc->if_type) { |
158 | case IF_TYPE_IDE: | |
c7057b52 | 159 | case IF_TYPE_SATA: |
cc1c8a13 | 160 | case IF_TYPE_ATAPI: |
71665528 WD |
161 | sprintf ((char *)info->name, "hd%c%d", |
162 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
163 | break; |
164 | case IF_TYPE_SCSI: | |
71665528 WD |
165 | sprintf ((char *)info->name, "sd%c%d", |
166 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
167 | break; |
168 | case IF_TYPE_USB: | |
71665528 WD |
169 | sprintf ((char *)info->name, "usbd%c%d", |
170 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
171 | break; |
172 | case IF_TYPE_DOC: | |
71665528 WD |
173 | sprintf ((char *)info->name, "docd%c%d", |
174 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
175 | break; |
176 | default: | |
71665528 WD |
177 | sprintf ((char *)info->name, "xx%c%d", |
178 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
179 | break; |
180 | } | |
181 | /* the bootcatalog (including validation Entry) is limited to 2048Bytes | |
182 | * (63 boot entries + validation entry) */ | |
183 | while(offset<2048) { | |
184 | pide=(iso_init_def_entry_t *)&tmpbuf[offset]; | |
185 | if ((pide->boot_ind==0x88) || | |
186 | (pide->boot_ind==0x00)) { /* Header Id for default Sections Entries */ | |
187 | if(entry_num==part_num) { /* part found */ | |
188 | goto found; | |
189 | } | |
190 | entry_num++; /* count partitions Entries (boot and non bootables */ | |
191 | offset+=0x20; | |
192 | continue; | |
193 | } | |
194 | if ((pide->boot_ind==0x90) || /* Section Header Entry */ | |
195 | (pide->boot_ind==0x91) || /* Section Header Entry (last) */ | |
196 | (pide->boot_ind==0x44)) { /* Extension Indicator */ | |
197 | offset+=0x20; /* skip unused entries */ | |
198 | } | |
199 | else { | |
200 | if(verb) | |
201 | printf ("** Partition %d not found on device %d **\n", | |
202 | part_num,dev_desc->dev); | |
203 | return(-1); | |
204 | } | |
205 | } | |
206 | /* if we reach this point entire sector has been | |
207 | * searched w/o succsess */ | |
208 | if(verb) | |
209 | printf ("** Partition %d not found on device %d **\n", | |
210 | part_num,dev_desc->dev); | |
211 | return(-1); | |
212 | found: | |
213 | if(pide->boot_ind!=0x88) { | |
214 | if(verb) | |
215 | printf ("** Partition %d is not bootable on device %d **\n", | |
216 | part_num,dev_desc->dev); | |
217 | return (-1); | |
218 | } | |
219 | switch(pide->boot_media) { | |
220 | case 0x00: /* no emulation */ | |
221 | info->size=le16_to_int(pide->sec_cnt)>>2; | |
222 | break; | |
223 | case 0x01: info->size=2400>>2; break; /* 1.2MByte Floppy */ | |
224 | case 0x02: info->size=2880>>2; break; /* 1.44MByte Floppy */ | |
225 | case 0x03: info->size=5760>>2; break; /* 2.88MByte Floppy */ | |
226 | case 0x04: info->size=2880>>2; break; /* dummy (HD Emulation) */ | |
227 | default: info->size=0; break; | |
228 | } | |
229 | newblkaddr=le32_to_int(pide->rel_block_addr); | |
230 | info->start=newblkaddr; | |
231 | PRINTF(" part %d found @ %lx size %lx\n",part_num,newblkaddr,info->size); | |
232 | return 0; | |
233 | } | |
234 | ||
235 | int get_partition_info_iso(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info) | |
236 | { | |
237 | return(get_partition_info_iso_verb(dev_desc, part_num, info, 1)); | |
238 | } | |
239 | ||
240 | ||
cc1c8a13 WD |
241 | void print_part_iso(block_dev_desc_t * dev_desc) |
242 | { | |
243 | disk_partition_t info; | |
244 | int i; | |
245 | if(get_partition_info_iso_verb(dev_desc,0,&info,0)==-1) { | |
246 | printf("** No boot partition found on device %d **\n",dev_desc->dev); | |
247 | return; | |
248 | } | |
249 | printf("Part Start Sect x Size Type\n"); | |
250 | i=0; | |
251 | do { | |
252 | printf (" %2d %8ld %8ld %6ld %.32s\n", | |
253 | i, info.start, info.size, info.blksz, info.type); | |
254 | i++; | |
255 | } while (get_partition_info_iso_verb(dev_desc,i,&info,0)!=-1); | |
256 | } | |
257 | ||
258 | int test_part_iso (block_dev_desc_t *dev_desc) | |
259 | { | |
260 | disk_partition_t info; | |
261 | ||
262 | return(get_partition_info_iso_verb(dev_desc,0,&info,0)); | |
263 | } | |
264 | ||
cde5c64d | 265 | #endif |