]>
git.ipfire.org Git - u-boot.git/blob - disk/part_iso.c
3 * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch.
5 * SPDX-License-Identifier: GPL-2.0+
10 #include <asm/unaligned.h>
13 #ifdef HAVE_BLOCK_DEVICE
15 /* #define ISO_PART_DEBUG */
18 #define PRINTF(fmt,args...) printf (fmt ,##args)
20 #define PRINTF(fmt,args...)
23 /* enable this if CDs are written with the PowerPC Platform ID */
24 #undef CHECK_FOR_POWERPC_PLATTFORM
25 #define CD_SECTSIZE 2048
27 static unsigned char tmpbuf
[CD_SECTSIZE
];
29 /* only boot records will be listed as valid partitions */
30 int part_get_info_iso_verb(struct blk_desc
*dev_desc
, int part_num
,
31 disk_partition_t
*info
, int verb
)
33 int i
,offset
,entry_num
;
34 unsigned short *chksumbuf
;
35 unsigned short chksum
;
36 unsigned long newblkaddr
,blkaddr
,lastsect
,bootaddr
;
37 iso_boot_rec_t
*pbr
= (iso_boot_rec_t
*)tmpbuf
; /* boot record */
38 iso_pri_rec_t
*ppr
= (iso_pri_rec_t
*)tmpbuf
; /* primary desc */
39 iso_val_entry_t
*pve
= (iso_val_entry_t
*)tmpbuf
;
40 iso_init_def_entry_t
*pide
;
42 if (dev_desc
->blksz
!= CD_SECTSIZE
)
45 /* the first sector (sector 0x10) must be a primary volume desc */
47 if (blk_dread(dev_desc
, PVD_OFFSET
, 1, (ulong
*)tmpbuf
) != 1)
49 if(ppr
->desctype
!=0x01) {
51 printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
52 dev_desc
->devnum
, part_num
);
55 if(strncmp((char *)ppr
->stand_ident
,"CD001",5)!=0) {
57 printf ("** Wrong ISO Ident: %s on %d:%d **\n",
58 ppr
->stand_ident
, dev_desc
->devnum
, part_num
);
61 lastsect
= ((ppr
->firstsek_LEpathtab1_LE
& 0x000000ff)<<24) +
62 ((ppr
->firstsek_LEpathtab1_LE
& 0x0000ff00)<< 8) +
63 ((ppr
->firstsek_LEpathtab1_LE
& 0x00ff0000)>> 8) +
64 ((ppr
->firstsek_LEpathtab1_LE
& 0xff000000)>>24) ;
65 info
->blksz
=ppr
->secsize_BE
; /* assuming same block size for all entries */
66 PRINTF(" Lastsect:%08lx\n",lastsect
);
67 for(i
=blkaddr
;i
<lastsect
;i
++) {
68 PRINTF("Reading block %d\n", i
);
69 if (blk_dread(dev_desc
, i
, 1, (ulong
*)tmpbuf
) != 1)
71 if(ppr
->desctype
==0x00)
72 break; /* boot entry found */
73 if(ppr
->desctype
==0xff) {
75 printf ("** No valid boot catalog found on %d:%d **\n",
76 dev_desc
->devnum
, part_num
);
80 /* boot entry found */
81 if(strncmp(pbr
->ident_str
,"EL TORITO SPECIFICATION",23)!=0) {
83 printf ("** Wrong El Torito ident: %s on %d:%d **\n",
84 pbr
->ident_str
, dev_desc
->devnum
, part_num
);
87 bootaddr
= get_unaligned_le32(pbr
->pointer
);
88 PRINTF(" Boot Entry at: %08lX\n",bootaddr
);
89 if (blk_dread(dev_desc
, bootaddr
, 1, (ulong
*)tmpbuf
) != 1) {
91 printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
92 bootaddr
, dev_desc
->devnum
, part_num
);
96 chksumbuf
= (unsigned short *)tmpbuf
;
98 chksum
+=((chksumbuf
[i
] &0xff)<<8)+((chksumbuf
[i
] &0xff00)>>8);
101 printf("** Checksum Error in booting catalog validation entry on %d:%d **\n",
102 dev_desc
->devnum
, part_num
);
105 if((pve
->key
[0]!=0x55)||(pve
->key
[1]!=0xAA)) {
107 printf ("** Key 0x55 0xAA error on %d:%d **\n",
108 dev_desc
->devnum
, part_num
);
111 #ifdef CHECK_FOR_POWERPC_PLATTFORM
112 if(pve
->platform
!=0x01) {
114 printf ("** No PowerPC platform CD on %d:%d **\n",
115 dev_desc
->devnum
, part_num
);
119 /* the validation entry seems to be ok, now search the "partition" */
122 strcpy((char *)info
->type
, "U-Boot");
123 switch(dev_desc
->if_type
) {
127 sprintf ((char *)info
->name
, "hd%c%d",
128 'a' + dev_desc
->devnum
, part_num
);
131 sprintf ((char *)info
->name
, "sd%c%d",
132 'a' + dev_desc
->devnum
, part_num
);
135 sprintf ((char *)info
->name
, "usbd%c%d",
136 'a' + dev_desc
->devnum
, part_num
);
139 sprintf ((char *)info
->name
, "docd%c%d",
140 'a' + dev_desc
->devnum
, part_num
);
143 sprintf ((char *)info
->name
, "xx%c%d",
144 'a' + dev_desc
->devnum
, part_num
);
147 /* the bootcatalog (including validation Entry) is limited to 2048Bytes
148 * (63 boot entries + validation entry) */
150 pide
=(iso_init_def_entry_t
*)&tmpbuf
[offset
];
151 if ((pide
->boot_ind
==0x88) ||
152 (pide
->boot_ind
==0x00)) { /* Header Id for default Sections Entries */
153 if(entry_num
==part_num
) { /* part found */
156 entry_num
++; /* count partitions Entries (boot and non bootables */
160 if ((pide
->boot_ind
==0x90) || /* Section Header Entry */
161 (pide
->boot_ind
==0x91) || /* Section Header Entry (last) */
162 (pide
->boot_ind
==0x44)) { /* Extension Indicator */
163 offset
+=0x20; /* skip unused entries */
167 printf ("** Partition %d not found on device %d **\n",
168 part_num
, dev_desc
->devnum
);
172 /* if we reach this point entire sector has been
173 * searched w/o succsess */
175 printf ("** Partition %d not found on device %d **\n",
176 part_num
, dev_desc
->devnum
);
179 if(pide
->boot_ind
!=0x88) {
181 printf("** Partition %d is not bootable on device %d **\n",
182 part_num
, dev_desc
->devnum
);
185 switch(pide
->boot_media
) {
186 case 0x00: /* no emulation */
187 info
->size
= get_unaligned_le16(pide
->sec_cnt
)>>2;
189 case 0x01: info
->size
=2400>>2; break; /* 1.2MByte Floppy */
190 case 0x02: info
->size
=2880>>2; break; /* 1.44MByte Floppy */
191 case 0x03: info
->size
=5760>>2; break; /* 2.88MByte Floppy */
192 case 0x04: info
->size
=2880>>2; break; /* dummy (HD Emulation) */
193 default: info
->size
=0; break;
195 newblkaddr
= get_unaligned_le32(pide
->rel_block_addr
);
196 info
->start
=newblkaddr
;
197 PRINTF(" part %d found @ %lx size %lx\n",part_num
,newblkaddr
,info
->size
);
201 static int part_get_info_iso(struct blk_desc
*dev_desc
, int part_num
,
202 disk_partition_t
*info
)
204 return part_get_info_iso_verb(dev_desc
, part_num
, info
, 1);
207 static void part_print_iso(struct blk_desc
*dev_desc
)
209 disk_partition_t info
;
212 if (part_get_info_iso_verb(dev_desc
, 0, &info
, 0) == -1) {
213 printf("** No boot partition found on device %d **\n",
217 printf("Part Start Sect x Size Type\n");
220 printf(" %2d " LBAFU
" " LBAFU
" %6ld %.32s\n",
221 i
, info
.start
, info
.size
, info
.blksz
, info
.type
);
223 } while (part_get_info_iso_verb(dev_desc
, i
, &info
, 0) != -1);
226 static int part_test_iso(struct blk_desc
*dev_desc
)
228 disk_partition_t info
;
230 return part_get_info_iso_verb(dev_desc
, 0, &info
, 0);
233 U_BOOT_PART_TYPE(iso
) = {
235 .part_type
= PART_TYPE_ISO
,
236 .get_info
= part_get_info_iso
,
237 .print
= part_print_iso
,
238 .test
= part_test_iso
,