blob: 06dd75eff6d81047e136ba539c632c1ea35b173b [file] [log] [blame]
wdenkcc1c8a12002-11-02 22:58:18 +00001/*
2 * (C) Copyright 2001
3 * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include <command.h>
wdenkcc1c8a12002-11-02 22:58:18 +000026#include "part_iso.h"
27
Jon Loeligercde5c642007-07-09 17:22:37 -050028#if (defined(CONFIG_CMD_IDE) || \
29 defined(CONFIG_CMD_SCSI) || \
30 defined(CONFIG_CMD_USB) || \
wdenk1968e612005-02-24 23:23:29 +000031 defined(CONFIG_MMC) || \
32 defined(CONFIG_SYSTEMACE) ) && defined(CONFIG_ISO_PARTITION)
wdenkcc1c8a12002-11-02 22:58:18 +000033
wdenk1968e612005-02-24 23:23:29 +000034/* #define ISO_PART_DEBUG */
wdenkcc1c8a12002-11-02 22:58:18 +000035
36#ifdef ISO_PART_DEBUG
37#define PRINTF(fmt,args...) printf (fmt ,##args)
38#else
39#define PRINTF(fmt,args...)
40#endif
41
42/* enable this if CDs are written with the PowerPC Platform ID */
43#undef CHECK_FOR_POWERPC_PLATTFORM
44#define CD_SECTSIZE 2048
45
46static unsigned char tmpbuf[CD_SECTSIZE];
47
48/* Convert char[4] in little endian format to the host format integer
49 */
50static inline unsigned long le32_to_int(unsigned char *le32)
51{
52 return ((le32[3] << 24) +
53 (le32[2] << 16) +
54 (le32[1] << 8) +
55 le32[0]
56 );
57}
58/* Convert char[2] in little endian format to the host format integer
59 */
60static inline unsigned short le16_to_int(unsigned char *le16)
61{
62 return ((le16[1] << 8) +
63 le16[0]
64 );
65}
66
67
68/* only boot records will be listed as valid partitions */
69int get_partition_info_iso_verb(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info, int verb)
70{
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;
79
80 /* the first sector (sector 0x10) must be a primary volume desc */
81 blkaddr=PVD_OFFSET;
82 if (dev_desc->block_read (dev_desc->dev, PVD_OFFSET, 1, (ulong *) tmpbuf) != 1)
83 return (-1);
84 if(ppr->desctype!=0x01) {
85 if(verb)
86 printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
87 dev_desc->dev, part_num);
88 return (-1);
89 }
Wolfgang Denk77ddac92005-10-13 16:45:02 +020090 if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) {
wdenkcc1c8a12002-11-02 22:58:18 +000091 if(verb)
92 printf ("** Wrong ISO Ident: %s on %d:%d **\n",
93 ppr->stand_ident,dev_desc->dev, part_num);
94 return (-1);
95 }
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++) {
wdenkc7de8292002-11-19 11:04:11 +0000103 PRINTF("Reading block %d\n", i);
wdenkcc1c8a12002-11-02 22:58:18 +0000104 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *) tmpbuf) != 1)
105 return (-1);
106 if(ppr->desctype==0x00)
107 break; /* boot entry found */
108 if(ppr->desctype==0xff) {
109 if(verb)
110 printf ("** No valid boot catalog found on %d:%d **\n",
111 dev_desc->dev, part_num);
112 return (-1);
113 }
114 }
115 /* boot entry found */
116 if(strncmp(pbr->ident_str,"EL TORITO SPECIFICATION",23)!=0) {
117 if(verb)
118 printf ("** Wrong El Torito ident: %s on %d:%d **\n",
119 pbr->ident_str,dev_desc->dev, part_num);
120 return (-1);
121 }
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) {
125 if(verb)
126 printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
127 bootaddr,dev_desc->dev, part_num);
128 return (-1);
129 }
130 chksum=0;
131 chksumbuf = (unsigned short *)tmpbuf;
132 for(i=0;i<0x10;i++)
133 chksum+=((chksumbuf[i] &0xff)<<8)+((chksumbuf[i] &0xff00)>>8);
134 if(chksum!=0) {
135 if(verb)
136 printf ("** Checksum Error in booting catalog validation entry on %d:%d **\n",
137 dev_desc->dev, part_num);
138 return (-1);
139 }
140 if((pve->key[0]!=0x55)||(pve->key[1]!=0xAA)) {
141 if(verb)
142 printf ("** Key 0x55 0xAA error on %d:%d **\n",
143 dev_desc->dev, part_num);
144 return(-1);
145 }
146#ifdef CHECK_FOR_POWERPC_PLATTFORM
147 if(pve->platform!=0x01) {
148 if(verb)
149 printf ("** No PowerPC platform CD on %d:%d **\n",
150 dev_desc->dev, part_num);
151 return(-1);
152 }
153#endif
154 /* the validation entry seems to be ok, now search the "partition" */
155 entry_num=0;
156 offset=0x20;
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200157 sprintf ((char *)info->type, "U-Boot");
wdenkcc1c8a12002-11-02 22:58:18 +0000158 switch(dev_desc->if_type) {
159 case IF_TYPE_IDE:
160 case IF_TYPE_ATAPI:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200161 sprintf ((char *)info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkcc1c8a12002-11-02 22:58:18 +0000162 break;
163 case IF_TYPE_SCSI:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200164 sprintf ((char *)info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkcc1c8a12002-11-02 22:58:18 +0000165 break;
166 case IF_TYPE_USB:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200167 sprintf ((char *)info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkcc1c8a12002-11-02 22:58:18 +0000168 break;
169 case IF_TYPE_DOC:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200170 sprintf ((char *)info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkcc1c8a12002-11-02 22:58:18 +0000171 break;
172 default:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200173 sprintf ((char *)info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkcc1c8a12002-11-02 22:58:18 +0000174 break;
175 }
176 /* the bootcatalog (including validation Entry) is limited to 2048Bytes
177 * (63 boot entries + validation entry) */
178 while(offset<2048) {
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 */
183 goto found;
184 }
185 entry_num++; /* count partitions Entries (boot and non bootables */
186 offset+=0x20;
187 continue;
188 }
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 */
193 }
194 else {
195 if(verb)
196 printf ("** Partition %d not found on device %d **\n",
197 part_num,dev_desc->dev);
198 return(-1);
199 }
200 }
201 /* if we reach this point entire sector has been
202 * searched w/o succsess */
203 if(verb)
204 printf ("** Partition %d not found on device %d **\n",
205 part_num,dev_desc->dev);
206 return(-1);
207found:
208 if(pide->boot_ind!=0x88) {
209 if(verb)
210 printf ("** Partition %d is not bootable on device %d **\n",
211 part_num,dev_desc->dev);
212 return (-1);
213 }
214 switch(pide->boot_media) {
215 case 0x00: /* no emulation */
216 info->size=le16_to_int(pide->sec_cnt)>>2;
217 break;
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;
223 }
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);
227 return 0;
228}
229
230int get_partition_info_iso(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info)
231{
232 return(get_partition_info_iso_verb(dev_desc, part_num, info, 1));
233}
234
235
wdenkcc1c8a12002-11-02 22:58:18 +0000236void print_part_iso(block_dev_desc_t * dev_desc)
237{
238 disk_partition_t info;
239 int i;
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);
242 return;
243 }
244 printf("Part Start Sect x Size Type\n");
245 i=0;
246 do {
247 printf (" %2d %8ld %8ld %6ld %.32s\n",
248 i, info.start, info.size, info.blksz, info.type);
249 i++;
250 } while (get_partition_info_iso_verb(dev_desc,i,&info,0)!=-1);
251}
252
253int test_part_iso (block_dev_desc_t *dev_desc)
254{
255 disk_partition_t info;
256
257 return(get_partition_info_iso_verb(dev_desc,0,&info,0));
258}
259
Jon Loeligercde5c642007-07-09 17:22:37 -0500260#endif