]>
git.ipfire.org Git - people/ms/u-boot.git/blob - disk/part_iso.c
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 /* the first sector (sector 0x10) must be a primary volume desc */
78 if (dev_desc
->block_read (dev_desc
->dev
, PVD_OFFSET
, 1, (ulong
*) tmpbuf
) != 1)
80 if(ppr
->desctype
!=0x01) {
82 printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
83 dev_desc
->dev
, part_num
);
86 if(strncmp((char *)ppr
->stand_ident
,"CD001",5)!=0) {
88 printf ("** Wrong ISO Ident: %s on %d:%d **\n",
89 ppr
->stand_ident
,dev_desc
->dev
, part_num
);
92 lastsect
= ((ppr
->firstsek_LEpathtab1_LE
& 0x000000ff)<<24) +
93 ((ppr
->firstsek_LEpathtab1_LE
& 0x0000ff00)<< 8) +
94 ((ppr
->firstsek_LEpathtab1_LE
& 0x00ff0000)>> 8) +
95 ((ppr
->firstsek_LEpathtab1_LE
& 0xff000000)>>24) ;
96 info
->blksz
=ppr
->secsize_BE
; /* assuming same block size for all entries */
97 PRINTF(" Lastsect:%08lx\n",lastsect
);
98 for(i
=blkaddr
;i
<lastsect
;i
++) {
99 PRINTF("Reading block %d\n", i
);
100 if (dev_desc
->block_read (dev_desc
->dev
, i
, 1, (ulong
*) tmpbuf
) != 1)
102 if(ppr
->desctype
==0x00)
103 break; /* boot entry found */
104 if(ppr
->desctype
==0xff) {
106 printf ("** No valid boot catalog found on %d:%d **\n",
107 dev_desc
->dev
, part_num
);
111 /* boot entry found */
112 if(strncmp(pbr
->ident_str
,"EL TORITO SPECIFICATION",23)!=0) {
114 printf ("** Wrong El Torito ident: %s on %d:%d **\n",
115 pbr
->ident_str
,dev_desc
->dev
, part_num
);
118 bootaddr
=le32_to_int(pbr
->pointer
);
119 PRINTF(" Boot Entry at: %08lX\n",bootaddr
);
120 if (dev_desc
->block_read (dev_desc
->dev
, bootaddr
, 1, (ulong
*) tmpbuf
) != 1) {
122 printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
123 bootaddr
,dev_desc
->dev
, part_num
);
127 chksumbuf
= (unsigned short *)tmpbuf
;
129 chksum
+=((chksumbuf
[i
] &0xff)<<8)+((chksumbuf
[i
] &0xff00)>>8);
132 printf ("** Checksum Error in booting catalog validation entry on %d:%d **\n",
133 dev_desc
->dev
, part_num
);
136 if((pve
->key
[0]!=0x55)||(pve
->key
[1]!=0xAA)) {
138 printf ("** Key 0x55 0xAA error on %d:%d **\n",
139 dev_desc
->dev
, part_num
);
142 #ifdef CHECK_FOR_POWERPC_PLATTFORM
143 if(pve
->platform
!=0x01) {
145 printf ("** No PowerPC platform CD on %d:%d **\n",
146 dev_desc
->dev
, part_num
);
150 /* the validation entry seems to be ok, now search the "partition" */
153 sprintf ((char *)info
->type
, "U-Boot");
154 switch(dev_desc
->if_type
) {
158 sprintf ((char *)info
->name
, "hd%c%d",
159 'a' + dev_desc
->dev
, part_num
);
162 sprintf ((char *)info
->name
, "sd%c%d",
163 'a' + dev_desc
->dev
, part_num
);
166 sprintf ((char *)info
->name
, "usbd%c%d",
167 'a' + dev_desc
->dev
, part_num
);
170 sprintf ((char *)info
->name
, "docd%c%d",
171 'a' + dev_desc
->dev
, part_num
);
174 sprintf ((char *)info
->name
, "xx%c%d",
175 'a' + dev_desc
->dev
, part_num
);
178 /* the bootcatalog (including validation Entry) is limited to 2048Bytes
179 * (63 boot entries + validation entry) */
181 pide
=(iso_init_def_entry_t
*)&tmpbuf
[offset
];
182 if ((pide
->boot_ind
==0x88) ||
183 (pide
->boot_ind
==0x00)) { /* Header Id for default Sections Entries */
184 if(entry_num
==part_num
) { /* part found */
187 entry_num
++; /* count partitions Entries (boot and non bootables */
191 if ((pide
->boot_ind
==0x90) || /* Section Header Entry */
192 (pide
->boot_ind
==0x91) || /* Section Header Entry (last) */
193 (pide
->boot_ind
==0x44)) { /* Extension Indicator */
194 offset
+=0x20; /* skip unused entries */
198 printf ("** Partition %d not found on device %d **\n",
199 part_num
,dev_desc
->dev
);
203 /* if we reach this point entire sector has been
204 * searched w/o succsess */
206 printf ("** Partition %d not found on device %d **\n",
207 part_num
,dev_desc
->dev
);
210 if(pide
->boot_ind
!=0x88) {
212 printf ("** Partition %d is not bootable on device %d **\n",
213 part_num
,dev_desc
->dev
);
216 switch(pide
->boot_media
) {
217 case 0x00: /* no emulation */
218 info
->size
=le16_to_int(pide
->sec_cnt
)>>2;
220 case 0x01: info
->size
=2400>>2; break; /* 1.2MByte Floppy */
221 case 0x02: info
->size
=2880>>2; break; /* 1.44MByte Floppy */
222 case 0x03: info
->size
=5760>>2; break; /* 2.88MByte Floppy */
223 case 0x04: info
->size
=2880>>2; break; /* dummy (HD Emulation) */
224 default: info
->size
=0; break;
226 newblkaddr
=le32_to_int(pide
->rel_block_addr
);
227 info
->start
=newblkaddr
;
228 PRINTF(" part %d found @ %lx size %lx\n",part_num
,newblkaddr
,info
->size
);
232 int get_partition_info_iso(block_dev_desc_t
* dev_desc
, int part_num
, disk_partition_t
* info
)
234 return(get_partition_info_iso_verb(dev_desc
, part_num
, info
, 1));
238 void print_part_iso(block_dev_desc_t
* dev_desc
)
240 disk_partition_t info
;
242 if(get_partition_info_iso_verb(dev_desc
,0,&info
,0)==-1) {
243 printf("** No boot partition found on device %d **\n",dev_desc
->dev
);
246 printf("Part Start Sect x Size Type\n");
249 printf (" %2d %8ld %8ld %6ld %.32s\n",
250 i
, info
.start
, info
.size
, info
.blksz
, info
.type
);
252 } while (get_partition_info_iso_verb(dev_desc
,i
,&info
,0)!=-1);
255 int test_part_iso (block_dev_desc_t
*dev_desc
)
257 disk_partition_t info
;
259 return(get_partition_info_iso_verb(dev_desc
,0,&info
,0));