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 #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)
34 /* #define ISO_PART_DEBUG */
37 #define PRINTF(fmt,args...) printf (fmt ,##args)
39 #define PRINTF(fmt,args...)
42 /* enable this if CDs are written with the PowerPC Platform ID */
43 #undef CHECK_FOR_POWERPC_PLATTFORM
44 #define CD_SECTSIZE 2048
46 static unsigned char tmpbuf[CD_SECTSIZE];
48 /* Convert char[4] in little endian format to the host format integer
50 static inline unsigned long le32_to_int(unsigned char *le32)
52 return ((le32[3] << 24) +
58 /* Convert char[2] in little endian format to the host format integer
60 static inline unsigned short le16_to_int(unsigned char *le16)
62 return ((le16[1] << 8) +
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)
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;
80 /* the first sector (sector 0x10) must be a primary volume desc */
82 if (dev_desc->block_read (dev_desc->dev, PVD_OFFSET, 1, (ulong *) tmpbuf) != 1)
84 if(ppr->desctype!=0x01) {
86 printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
87 dev_desc->dev, part_num);
90 if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) {
92 printf ("** Wrong ISO Ident: %s on %d:%d **\n",
93 ppr->stand_ident,dev_desc->dev, part_num);
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++) {
103 PRINTF("Reading block %d\n", i);
104 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *) tmpbuf) != 1)
106 if(ppr->desctype==0x00)
107 break; /* boot entry found */
108 if(ppr->desctype==0xff) {
110 printf ("** No valid boot catalog found on %d:%d **\n",
111 dev_desc->dev, part_num);
115 /* boot entry found */
116 if(strncmp(pbr->ident_str,"EL TORITO SPECIFICATION",23)!=0) {
118 printf ("** Wrong El Torito ident: %s on %d:%d **\n",
119 pbr->ident_str,dev_desc->dev, part_num);
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) {
126 printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
127 bootaddr,dev_desc->dev, part_num);
131 chksumbuf = (unsigned short *)tmpbuf;
133 chksum+=((chksumbuf[i] &0xff)<<8)+((chksumbuf[i] &0xff00)>>8);
136 printf ("** Checksum Error in booting catalog validation entry on %d:%d **\n",
137 dev_desc->dev, part_num);
140 if((pve->key[0]!=0x55)||(pve->key[1]!=0xAA)) {
142 printf ("** Key 0x55 0xAA error on %d:%d **\n",
143 dev_desc->dev, part_num);
146 #ifdef CHECK_FOR_POWERPC_PLATTFORM
147 if(pve->platform!=0x01) {
149 printf ("** No PowerPC platform CD on %d:%d **\n",
150 dev_desc->dev, part_num);
154 /* the validation entry seems to be ok, now search the "partition" */
157 sprintf ((char *)info->type, "U-Boot");
158 switch(dev_desc->if_type) {
161 sprintf ((char *)info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
164 sprintf ((char *)info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
167 sprintf ((char *)info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
170 sprintf ((char *)info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
173 sprintf ((char *)info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
176 /* the bootcatalog (including validation Entry) is limited to 2048Bytes
177 * (63 boot entries + validation entry) */
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 */
185 entry_num++; /* count partitions Entries (boot and non bootables */
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 */
196 printf ("** Partition %d not found on device %d **\n",
197 part_num,dev_desc->dev);
201 /* if we reach this point entire sector has been
202 * searched w/o succsess */
204 printf ("** Partition %d not found on device %d **\n",
205 part_num,dev_desc->dev);
208 if(pide->boot_ind!=0x88) {
210 printf ("** Partition %d is not bootable on device %d **\n",
211 part_num,dev_desc->dev);
214 switch(pide->boot_media) {
215 case 0x00: /* no emulation */
216 info->size=le16_to_int(pide->sec_cnt)>>2;
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;
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);
230 int get_partition_info_iso(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info)
232 return(get_partition_info_iso_verb(dev_desc, part_num, info, 1));
236 void print_part_iso(block_dev_desc_t * dev_desc)
238 disk_partition_t info;
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);
244 printf("Part Start Sect x Size Type\n");
247 printf (" %2d %8ld %8ld %6ld %.32s\n",
248 i, info.start, info.size, info.blksz, info.type);
250 } while (get_partition_info_iso_verb(dev_desc,i,&info,0)!=-1);
253 int test_part_iso (block_dev_desc_t *dev_desc)
255 disk_partition_t info;
257 return(get_partition_info_iso_verb(dev_desc,0,&info,0));
260 #endif /* ((CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI)) && defined(CONFIG_ISO_PARTITION) */