]> git.sur5r.net Git - u-boot/blob - disk/part_iso.c
dm: part: Convert partition API use to linker lists
[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(struct blk_desc *dev_desc, int part_num,
50                                 disk_partition_t *info, int verb)
51 {
52         int i,offset,entry_num;
53         unsigned short *chksumbuf;
54         unsigned short chksum;
55         unsigned long newblkaddr,blkaddr,lastsect,bootaddr;
56         iso_boot_rec_t *pbr = (iso_boot_rec_t   *)tmpbuf; /* boot record */
57         iso_pri_rec_t *ppr = (iso_pri_rec_t     *)tmpbuf;       /* primary desc */
58         iso_val_entry_t *pve = (iso_val_entry_t *)tmpbuf;
59         iso_init_def_entry_t *pide;
60
61         if (dev_desc->blksz != CD_SECTSIZE)
62                 return -1;
63
64         /* the first sector (sector 0x10) must be a primary volume desc */
65         blkaddr=PVD_OFFSET;
66         if (dev_desc->block_read(dev_desc, PVD_OFFSET, 1, (ulong *)tmpbuf) != 1)
67                 return -1;
68         if(ppr->desctype!=0x01) {
69                 if(verb)
70                         printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
71                                 dev_desc->dev, part_num);
72                 return (-1);
73         }
74         if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) {
75                 if(verb)
76                         printf ("** Wrong ISO Ident: %s on %d:%d **\n",
77                                 ppr->stand_ident,dev_desc->dev, part_num);
78                 return (-1);
79         }
80         lastsect= ((ppr->firstsek_LEpathtab1_LE & 0x000000ff)<<24) +
81                   ((ppr->firstsek_LEpathtab1_LE & 0x0000ff00)<< 8) +
82                   ((ppr->firstsek_LEpathtab1_LE & 0x00ff0000)>> 8) +
83                   ((ppr->firstsek_LEpathtab1_LE & 0xff000000)>>24) ;
84         info->blksz=ppr->secsize_BE; /* assuming same block size for all entries */
85         PRINTF(" Lastsect:%08lx\n",lastsect);
86         for(i=blkaddr;i<lastsect;i++) {
87                 PRINTF("Reading block %d\n", i);
88                 if (dev_desc->block_read(dev_desc, i, 1, (ulong *)tmpbuf) != 1)
89                         return -1;
90                 if(ppr->desctype==0x00)
91                         break; /* boot entry found */
92                 if(ppr->desctype==0xff) {
93                         if(verb)
94                                 printf ("** No valid boot catalog found on %d:%d **\n",
95                                         dev_desc->dev, part_num);
96                         return (-1);
97                 }
98         }
99         /* boot entry found */
100         if(strncmp(pbr->ident_str,"EL TORITO SPECIFICATION",23)!=0) {
101                 if(verb)
102                         printf ("** Wrong El Torito ident: %s on %d:%d **\n",
103                                 pbr->ident_str,dev_desc->dev, part_num);
104                 return (-1);
105         }
106         bootaddr=le32_to_int(pbr->pointer);
107         PRINTF(" Boot Entry at: %08lX\n",bootaddr);
108         if (dev_desc->block_read(dev_desc, bootaddr, 1, (ulong *)tmpbuf) != 1) {
109                 if(verb)
110                         printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
111                                 bootaddr,dev_desc->dev, part_num);
112                 return (-1);
113         }
114         chksum=0;
115         chksumbuf = (unsigned short *)tmpbuf;
116         for(i=0;i<0x10;i++)
117                 chksum+=((chksumbuf[i] &0xff)<<8)+((chksumbuf[i] &0xff00)>>8);
118         if(chksum!=0) {
119                 if(verb)
120                         printf ("** Checksum Error in booting catalog validation entry on %d:%d **\n",
121                                 dev_desc->dev, part_num);
122                 return (-1);
123         }
124         if((pve->key[0]!=0x55)||(pve->key[1]!=0xAA)) {
125                 if(verb)
126                         printf ("** Key 0x55 0xAA error on %d:%d **\n",
127                                 dev_desc->dev, part_num);
128                 return(-1);
129         }
130 #ifdef CHECK_FOR_POWERPC_PLATTFORM
131         if(pve->platform!=0x01) {
132                 if(verb)
133                         printf ("** No PowerPC platform CD on %d:%d **\n",
134                                 dev_desc->dev, part_num);
135                 return(-1);
136         }
137 #endif
138         /* the validation entry seems to be ok, now search the "partition" */
139         entry_num=0;
140         offset=0x20;
141         strcpy((char *)info->type, "U-Boot");
142         switch(dev_desc->if_type) {
143                 case IF_TYPE_IDE:
144                 case IF_TYPE_SATA:
145                 case IF_TYPE_ATAPI:
146                         sprintf ((char *)info->name, "hd%c%d",
147                                 'a' + dev_desc->dev, part_num);
148                         break;
149                 case IF_TYPE_SCSI:
150                         sprintf ((char *)info->name, "sd%c%d",
151                                 'a' + dev_desc->dev, part_num);
152                         break;
153                 case IF_TYPE_USB:
154                         sprintf ((char *)info->name, "usbd%c%d",
155                                 'a' + dev_desc->dev, part_num);
156                         break;
157                 case IF_TYPE_DOC:
158                         sprintf ((char *)info->name, "docd%c%d",
159                                 'a' + dev_desc->dev, part_num);
160                         break;
161                 default:
162                         sprintf ((char *)info->name, "xx%c%d",
163                                 'a' + dev_desc->dev, part_num);
164                         break;
165         }
166         /* the bootcatalog (including validation Entry) is limited to 2048Bytes
167          * (63 boot entries + validation entry) */
168          while(offset<2048) {
169                 pide=(iso_init_def_entry_t *)&tmpbuf[offset];
170                 if ((pide->boot_ind==0x88) ||
171                     (pide->boot_ind==0x00)) { /* Header Id for default Sections Entries */
172                         if(entry_num==part_num) { /* part found */
173                                 goto found;
174                         }
175                         entry_num++; /* count partitions Entries (boot and non bootables */
176                         offset+=0x20;
177                         continue;
178                 }
179                 if ((pide->boot_ind==0x90) ||   /* Section Header Entry */
180                     (pide->boot_ind==0x91) ||   /* Section Header Entry (last) */
181                     (pide->boot_ind==0x44)) {   /* Extension Indicator */
182                         offset+=0x20; /* skip unused entries */
183                 }
184                 else {
185                         if(verb)
186                                 printf ("** Partition %d not found on device %d **\n",
187                                         part_num,dev_desc->dev);
188                         return(-1);
189                 }
190         }
191         /* if we reach this point entire sector has been
192          * searched w/o succsess */
193         if(verb)
194                 printf ("** Partition %d not found on device %d **\n",
195                         part_num,dev_desc->dev);
196         return(-1);
197 found:
198         if(pide->boot_ind!=0x88) {
199                 if(verb)
200                         printf ("** Partition %d is not bootable on device %d **\n",
201                                 part_num,dev_desc->dev);
202                 return (-1);
203         }
204         switch(pide->boot_media) {
205                 case 0x00: /* no emulation */
206                         info->size=le16_to_int(pide->sec_cnt)>>2;
207                         break;
208                 case 0x01:      info->size=2400>>2; break; /* 1.2MByte Floppy */
209                 case 0x02:      info->size=2880>>2; break; /* 1.44MByte Floppy */
210                 case 0x03:      info->size=5760>>2; break; /* 2.88MByte Floppy */
211                 case 0x04:      info->size=2880>>2; break; /* dummy (HD Emulation) */
212                 default:        info->size=0; break;
213         }
214         newblkaddr=le32_to_int(pide->rel_block_addr);
215         info->start=newblkaddr;
216         PRINTF(" part %d found @ %lx size %lx\n",part_num,newblkaddr,info->size);
217         return 0;
218 }
219
220 static int get_partition_info_iso(struct blk_desc *dev_desc, int part_num,
221                                   disk_partition_t *info)
222 {
223         return(get_partition_info_iso_verb(dev_desc, part_num, info, 1));
224 }
225
226 static void print_part_iso(struct blk_desc *dev_desc)
227 {
228         disk_partition_t info;
229         int i;
230         if(get_partition_info_iso_verb(dev_desc,0,&info,0)==-1) {
231                 printf("** No boot partition found on device %d **\n",dev_desc->dev);
232                 return;
233         }
234         printf("Part   Start     Sect x Size Type\n");
235         i=0;
236         do {
237                 printf(" %2d " LBAFU " " LBAFU " %6ld %.32s\n",
238                        i, info.start, info.size, info.blksz, info.type);
239                 i++;
240         } while (get_partition_info_iso_verb(dev_desc,i,&info,0)!=-1);
241 }
242
243 static int test_part_iso(struct blk_desc *dev_desc)
244 {
245         disk_partition_t info;
246
247         return(get_partition_info_iso_verb(dev_desc,0,&info,0));
248 }
249
250 U_BOOT_PART_TYPE(iso) = {
251         .name           = "ISO",
252         .part_type      = PART_TYPE_ISO,
253         .get_info       = get_partition_info_iso,
254         .print          = print_part_iso,
255         .test           = test_part_iso,
256 };
257 #endif