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block: pass block dev not num to read/write/erase()
[u-boot] / disk / part_iso.c
1 /*
2  * (C) Copyright 2001
3  * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch.
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #include <common.h>
9 #include <command.h>
10 #include "part_iso.h"
11
12 #ifdef HAVE_BLOCK_DEVICE
13
14 /* #define      ISO_PART_DEBUG */
15
16 #ifdef  ISO_PART_DEBUG
17 #define PRINTF(fmt,args...)     printf (fmt ,##args)
18 #else
19 #define PRINTF(fmt,args...)
20 #endif
21
22 /* enable this if CDs are written with the PowerPC Platform ID */
23 #undef CHECK_FOR_POWERPC_PLATTFORM
24 #define CD_SECTSIZE 2048
25
26 static unsigned char tmpbuf[CD_SECTSIZE];
27
28 /* Convert char[4] in little endian format to the host format integer
29  */
30 static inline unsigned long le32_to_int(unsigned char *le32)
31 {
32     return ((le32[3] << 24) +
33             (le32[2] << 16) +
34             (le32[1] << 8) +
35              le32[0]
36            );
37 }
38 /* Convert char[2] in little endian format to the host format integer
39  */
40 static inline unsigned short le16_to_int(unsigned char *le16)
41 {
42     return ((le16[1] << 8) +
43            le16[0]
44            );
45 }
46
47
48 /* only boot records will be listed as valid partitions */
49 int get_partition_info_iso_verb(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info, int verb)
50 {
51         int i,offset,entry_num;
52         unsigned short *chksumbuf;
53         unsigned short chksum;
54         unsigned long newblkaddr,blkaddr,lastsect,bootaddr;
55         iso_boot_rec_t *pbr = (iso_boot_rec_t   *)tmpbuf; /* boot record */
56         iso_pri_rec_t *ppr = (iso_pri_rec_t     *)tmpbuf;       /* primary desc */
57         iso_val_entry_t *pve = (iso_val_entry_t *)tmpbuf;
58         iso_init_def_entry_t *pide;
59
60         if (dev_desc->blksz != CD_SECTSIZE)
61                 return -1;
62
63         /* the first sector (sector 0x10) must be a primary volume desc */
64         blkaddr=PVD_OFFSET;
65         if (dev_desc->block_read(dev_desc, PVD_OFFSET, 1, (ulong *)tmpbuf) != 1)
66                 return -1;
67         if(ppr->desctype!=0x01) {
68                 if(verb)
69                         printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
70                                 dev_desc->dev, part_num);
71                 return (-1);
72         }
73         if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) {
74                 if(verb)
75                         printf ("** Wrong ISO Ident: %s on %d:%d **\n",
76                                 ppr->stand_ident,dev_desc->dev, part_num);
77                 return (-1);
78         }
79         lastsect= ((ppr->firstsek_LEpathtab1_LE & 0x000000ff)<<24) +
80                   ((ppr->firstsek_LEpathtab1_LE & 0x0000ff00)<< 8) +
81                   ((ppr->firstsek_LEpathtab1_LE & 0x00ff0000)>> 8) +
82                   ((ppr->firstsek_LEpathtab1_LE & 0xff000000)>>24) ;
83         info->blksz=ppr->secsize_BE; /* assuming same block size for all entries */
84         PRINTF(" Lastsect:%08lx\n",lastsect);
85         for(i=blkaddr;i<lastsect;i++) {
86                 PRINTF("Reading block %d\n", i);
87                 if (dev_desc->block_read(dev_desc, i, 1, (ulong *)tmpbuf) != 1)
88                         return -1;
89                 if(ppr->desctype==0x00)
90                         break; /* boot entry found */
91                 if(ppr->desctype==0xff) {
92                         if(verb)
93                                 printf ("** No valid boot catalog found on %d:%d **\n",
94                                         dev_desc->dev, part_num);
95                         return (-1);
96                 }
97         }
98         /* boot entry found */
99         if(strncmp(pbr->ident_str,"EL TORITO SPECIFICATION",23)!=0) {
100                 if(verb)
101                         printf ("** Wrong El Torito ident: %s on %d:%d **\n",
102                                 pbr->ident_str,dev_desc->dev, part_num);
103                 return (-1);
104         }
105         bootaddr=le32_to_int(pbr->pointer);
106         PRINTF(" Boot Entry at: %08lX\n",bootaddr);
107         if (dev_desc->block_read(dev_desc, bootaddr, 1, (ulong *)tmpbuf) != 1) {
108                 if(verb)
109                         printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
110                                 bootaddr,dev_desc->dev, part_num);
111                 return (-1);
112         }
113         chksum=0;
114         chksumbuf = (unsigned short *)tmpbuf;
115         for(i=0;i<0x10;i++)
116                 chksum+=((chksumbuf[i] &0xff)<<8)+((chksumbuf[i] &0xff00)>>8);
117         if(chksum!=0) {
118                 if(verb)
119                         printf ("** Checksum Error in booting catalog validation entry on %d:%d **\n",
120                                 dev_desc->dev, part_num);
121                 return (-1);
122         }
123         if((pve->key[0]!=0x55)||(pve->key[1]!=0xAA)) {
124                 if(verb)
125                         printf ("** Key 0x55 0xAA error on %d:%d **\n",
126                                 dev_desc->dev, part_num);
127                 return(-1);
128         }
129 #ifdef CHECK_FOR_POWERPC_PLATTFORM
130         if(pve->platform!=0x01) {
131                 if(verb)
132                         printf ("** No PowerPC platform CD on %d:%d **\n",
133                                 dev_desc->dev, part_num);
134                 return(-1);
135         }
136 #endif
137         /* the validation entry seems to be ok, now search the "partition" */
138         entry_num=0;
139         offset=0x20;
140         sprintf ((char *)info->type, "U-Boot");
141         switch(dev_desc->if_type) {
142                 case IF_TYPE_IDE:
143                 case IF_TYPE_SATA:
144                 case IF_TYPE_ATAPI:
145                         sprintf ((char *)info->name, "hd%c%d",
146                                 'a' + dev_desc->dev, part_num);
147                         break;
148                 case IF_TYPE_SCSI:
149                         sprintf ((char *)info->name, "sd%c%d",
150                                 'a' + dev_desc->dev, part_num);
151                         break;
152                 case IF_TYPE_USB:
153                         sprintf ((char *)info->name, "usbd%c%d",
154                                 'a' + dev_desc->dev, part_num);
155                         break;
156                 case IF_TYPE_DOC:
157                         sprintf ((char *)info->name, "docd%c%d",
158                                 'a' + dev_desc->dev, part_num);
159                         break;
160                 default:
161                         sprintf ((char *)info->name, "xx%c%d",
162                                 'a' + dev_desc->dev, part_num);
163                         break;
164         }
165         /* the bootcatalog (including validation Entry) is limited to 2048Bytes
166          * (63 boot entries + validation entry) */
167          while(offset<2048) {
168                 pide=(iso_init_def_entry_t *)&tmpbuf[offset];
169                 if ((pide->boot_ind==0x88) ||
170                     (pide->boot_ind==0x00)) { /* Header Id for default Sections Entries */
171                         if(entry_num==part_num) { /* part found */
172                                 goto found;
173                         }
174                         entry_num++; /* count partitions Entries (boot and non bootables */
175                         offset+=0x20;
176                         continue;
177                 }
178                 if ((pide->boot_ind==0x90) ||   /* Section Header Entry */
179                     (pide->boot_ind==0x91) ||   /* Section Header Entry (last) */
180                     (pide->boot_ind==0x44)) {   /* Extension Indicator */
181                         offset+=0x20; /* skip unused entries */
182                 }
183                 else {
184                         if(verb)
185                                 printf ("** Partition %d not found on device %d **\n",
186                                         part_num,dev_desc->dev);
187                         return(-1);
188                 }
189         }
190         /* if we reach this point entire sector has been
191          * searched w/o succsess */
192         if(verb)
193                 printf ("** Partition %d not found on device %d **\n",
194                         part_num,dev_desc->dev);
195         return(-1);
196 found:
197         if(pide->boot_ind!=0x88) {
198                 if(verb)
199                         printf ("** Partition %d is not bootable on device %d **\n",
200                                 part_num,dev_desc->dev);
201                 return (-1);
202         }
203         switch(pide->boot_media) {
204                 case 0x00: /* no emulation */
205                         info->size=le16_to_int(pide->sec_cnt)>>2;
206                         break;
207                 case 0x01:      info->size=2400>>2; break; /* 1.2MByte Floppy */
208                 case 0x02:      info->size=2880>>2; break; /* 1.44MByte Floppy */
209                 case 0x03:      info->size=5760>>2; break; /* 2.88MByte Floppy */
210                 case 0x04:      info->size=2880>>2; break; /* dummy (HD Emulation) */
211                 default:        info->size=0; break;
212         }
213         newblkaddr=le32_to_int(pide->rel_block_addr);
214         info->start=newblkaddr;
215         PRINTF(" part %d found @ %lx size %lx\n",part_num,newblkaddr,info->size);
216         return 0;
217 }
218
219 int get_partition_info_iso(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info)
220 {
221         return(get_partition_info_iso_verb(dev_desc, part_num, info, 1));
222 }
223
224
225 void print_part_iso(block_dev_desc_t * dev_desc)
226 {
227         disk_partition_t info;
228         int i;
229         if(get_partition_info_iso_verb(dev_desc,0,&info,0)==-1) {
230                 printf("** No boot partition found on device %d **\n",dev_desc->dev);
231                 return;
232         }
233         printf("Part   Start     Sect x Size Type\n");
234         i=0;
235         do {
236                 printf(" %2d " LBAFU " " LBAFU " %6ld %.32s\n",
237                        i, info.start, info.size, info.blksz, info.type);
238                 i++;
239         } while (get_partition_info_iso_verb(dev_desc,i,&info,0)!=-1);
240 }
241
242 int test_part_iso (block_dev_desc_t *dev_desc)
243 {
244         disk_partition_t info;
245
246         return(get_partition_info_iso_verb(dev_desc,0,&info,0));
247 }
248
249 #endif