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