3 * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
28 #ifdef HAVE_BLOCK_DEVICE
30 /* #define ISO_PART_DEBUG */
33 #define PRINTF(fmt,args...) printf (fmt ,##args)
35 #define PRINTF(fmt,args...)
38 /* enable this if CDs are written with the PowerPC Platform ID */
39 #undef CHECK_FOR_POWERPC_PLATTFORM
40 #define CD_SECTSIZE 2048
42 static unsigned char tmpbuf[CD_SECTSIZE];
44 /* Convert char[4] in little endian format to the host format integer
46 static inline unsigned long le32_to_int(unsigned char *le32)
48 return ((le32[3] << 24) +
54 /* Convert char[2] in little endian format to the host format integer
56 static inline unsigned short le16_to_int(unsigned char *le16)
58 return ((le16[1] << 8) +
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)
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;
76 if (dev_desc->blksz != CD_SECTSIZE)
79 /* the first sector (sector 0x10) must be a primary volume desc */
81 if (dev_desc->block_read (dev_desc->dev, PVD_OFFSET, 1, (ulong *) tmpbuf) != 1)
83 if(ppr->desctype!=0x01) {
85 printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
86 dev_desc->dev, part_num);
89 if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) {
91 printf ("** Wrong ISO Ident: %s on %d:%d **\n",
92 ppr->stand_ident,dev_desc->dev, part_num);
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++) {
102 PRINTF("Reading block %d\n", i);
103 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *) tmpbuf) != 1)
105 if(ppr->desctype==0x00)
106 break; /* boot entry found */
107 if(ppr->desctype==0xff) {
109 printf ("** No valid boot catalog found on %d:%d **\n",
110 dev_desc->dev, part_num);
114 /* boot entry found */
115 if(strncmp(pbr->ident_str,"EL TORITO SPECIFICATION",23)!=0) {
117 printf ("** Wrong El Torito ident: %s on %d:%d **\n",
118 pbr->ident_str,dev_desc->dev, part_num);
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) {
125 printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
126 bootaddr,dev_desc->dev, part_num);
130 chksumbuf = (unsigned short *)tmpbuf;
132 chksum+=((chksumbuf[i] &0xff)<<8)+((chksumbuf[i] &0xff00)>>8);
135 printf ("** Checksum Error in booting catalog validation entry on %d:%d **\n",
136 dev_desc->dev, part_num);
139 if((pve->key[0]!=0x55)||(pve->key[1]!=0xAA)) {
141 printf ("** Key 0x55 0xAA error on %d:%d **\n",
142 dev_desc->dev, part_num);
145 #ifdef CHECK_FOR_POWERPC_PLATTFORM
146 if(pve->platform!=0x01) {
148 printf ("** No PowerPC platform CD on %d:%d **\n",
149 dev_desc->dev, part_num);
153 /* the validation entry seems to be ok, now search the "partition" */
156 sprintf ((char *)info->type, "U-Boot");
157 switch(dev_desc->if_type) {
161 sprintf ((char *)info->name, "hd%c%d",
162 'a' + dev_desc->dev, part_num);
165 sprintf ((char *)info->name, "sd%c%d",
166 'a' + dev_desc->dev, part_num);
169 sprintf ((char *)info->name, "usbd%c%d",
170 'a' + dev_desc->dev, part_num);
173 sprintf ((char *)info->name, "docd%c%d",
174 'a' + dev_desc->dev, part_num);
177 sprintf ((char *)info->name, "xx%c%d",
178 'a' + dev_desc->dev, part_num);
181 /* the bootcatalog (including validation Entry) is limited to 2048Bytes
182 * (63 boot entries + validation entry) */
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 */
190 entry_num++; /* count partitions Entries (boot and non bootables */
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 */
201 printf ("** Partition %d not found on device %d **\n",
202 part_num,dev_desc->dev);
206 /* if we reach this point entire sector has been
207 * searched w/o succsess */
209 printf ("** Partition %d not found on device %d **\n",
210 part_num,dev_desc->dev);
213 if(pide->boot_ind!=0x88) {
215 printf ("** Partition %d is not bootable on device %d **\n",
216 part_num,dev_desc->dev);
219 switch(pide->boot_media) {
220 case 0x00: /* no emulation */
221 info->size=le16_to_int(pide->sec_cnt)>>2;
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;
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);
235 int get_partition_info_iso(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info)
237 return(get_partition_info_iso_verb(dev_desc, part_num, info, 1));
241 void print_part_iso(block_dev_desc_t * dev_desc)
243 disk_partition_t info;
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);
249 printf("Part Start Sect x Size Type\n");
252 printf (" %2d %8ld %8ld %6ld %.32s\n",
253 i, info.start, info.size, info.blksz, info.type);
255 } while (get_partition_info_iso_verb(dev_desc,i,&info,0)!=-1);
258 int test_part_iso (block_dev_desc_t *dev_desc)
260 disk_partition_t info;
262 return(get_partition_info_iso_verb(dev_desc,0,&info,0));