]> git.sur5r.net Git - u-boot/blob - disk/part_iso.c
powerpc/mpc8xxx: Fix DDR code for empty first DIMM slot and enable DQS_en
[u-boot] / disk / part_iso.c
1 /*
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>
26 #include "part_iso.h"
27
28 #if defined(CONFIG_CMD_IDE) || \
29     defined(CONFIG_CMD_MG_DISK) || \
30     defined(CONFIG_CMD_SCSI) || \
31     defined(CONFIG_CMD_SATA) || \
32     defined(CONFIG_CMD_USB) || \
33     defined(CONFIG_MMC) || \
34     defined(CONFIG_SYSTEMACE)
35
36 /* #define      ISO_PART_DEBUG */
37
38 #ifdef  ISO_PART_DEBUG
39 #define PRINTF(fmt,args...)     printf (fmt ,##args)
40 #else
41 #define PRINTF(fmt,args...)
42 #endif
43
44 /* enable this if CDs are written with the PowerPC Platform ID */
45 #undef CHECK_FOR_POWERPC_PLATTFORM
46 #define CD_SECTSIZE 2048
47
48 static unsigned char tmpbuf[CD_SECTSIZE];
49
50 /* Convert char[4] in little endian format to the host format integer
51  */
52 static inline unsigned long le32_to_int(unsigned char *le32)
53 {
54     return ((le32[3] << 24) +
55             (le32[2] << 16) +
56             (le32[1] << 8) +
57              le32[0]
58            );
59 }
60 /* Convert char[2] in little endian format to the host format integer
61  */
62 static inline unsigned short le16_to_int(unsigned char *le16)
63 {
64     return ((le16[1] << 8) +
65            le16[0]
66            );
67 }
68
69
70 /* only boot records will be listed as valid partitions */
71 int get_partition_info_iso_verb(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info, int verb)
72 {
73         int i,offset,entry_num;
74         unsigned short *chksumbuf;
75         unsigned short chksum;
76         unsigned long newblkaddr,blkaddr,lastsect,bootaddr;
77         iso_boot_rec_t *pbr = (iso_boot_rec_t   *)tmpbuf; /* boot record */
78         iso_pri_rec_t *ppr = (iso_pri_rec_t     *)tmpbuf;       /* primary desc */
79         iso_val_entry_t *pve = (iso_val_entry_t *)tmpbuf;
80         iso_init_def_entry_t *pide;
81
82         /* the first sector (sector 0x10) must be a primary volume desc */
83         blkaddr=PVD_OFFSET;
84         if (dev_desc->block_read (dev_desc->dev, PVD_OFFSET, 1, (ulong *) tmpbuf) != 1)
85         return (-1);
86         if(ppr->desctype!=0x01) {
87                 if(verb)
88                         printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
89                                 dev_desc->dev, part_num);
90                 return (-1);
91         }
92         if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) {
93                 if(verb)
94                         printf ("** Wrong ISO Ident: %s on %d:%d **\n",
95                                 ppr->stand_ident,dev_desc->dev, part_num);
96                 return (-1);
97         }
98         lastsect= ((ppr->firstsek_LEpathtab1_LE & 0x000000ff)<<24) +
99                   ((ppr->firstsek_LEpathtab1_LE & 0x0000ff00)<< 8) +
100                   ((ppr->firstsek_LEpathtab1_LE & 0x00ff0000)>> 8) +
101                   ((ppr->firstsek_LEpathtab1_LE & 0xff000000)>>24) ;
102         info->blksz=ppr->secsize_BE; /* assuming same block size for all entries */
103         PRINTF(" Lastsect:%08lx\n",lastsect);
104         for(i=blkaddr;i<lastsect;i++) {
105                 PRINTF("Reading block %d\n", i);
106                 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *) tmpbuf) != 1)
107                 return (-1);
108                 if(ppr->desctype==0x00)
109                         break; /* boot entry found */
110                 if(ppr->desctype==0xff) {
111                         if(verb)
112                                 printf ("** No valid boot catalog found on %d:%d **\n",
113                                         dev_desc->dev, part_num);
114                         return (-1);
115                 }
116         }
117         /* boot entry found */
118         if(strncmp(pbr->ident_str,"EL TORITO SPECIFICATION",23)!=0) {
119                 if(verb)
120                         printf ("** Wrong El Torito ident: %s on %d:%d **\n",
121                                 pbr->ident_str,dev_desc->dev, part_num);
122                 return (-1);
123         }
124         bootaddr=le32_to_int(pbr->pointer);
125         PRINTF(" Boot Entry at: %08lX\n",bootaddr);
126         if (dev_desc->block_read (dev_desc->dev, bootaddr, 1, (ulong *) tmpbuf) != 1) {
127                 if(verb)
128                         printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
129                                 bootaddr,dev_desc->dev, part_num);
130                 return (-1);
131         }
132         chksum=0;
133         chksumbuf = (unsigned short *)tmpbuf;
134         for(i=0;i<0x10;i++)
135                 chksum+=((chksumbuf[i] &0xff)<<8)+((chksumbuf[i] &0xff00)>>8);
136         if(chksum!=0) {
137                 if(verb)
138                         printf ("** Checksum Error in booting catalog validation entry on %d:%d **\n",
139                                 dev_desc->dev, part_num);
140                 return (-1);
141         }
142         if((pve->key[0]!=0x55)||(pve->key[1]!=0xAA)) {
143                 if(verb)
144                         printf ("** Key 0x55 0xAA error on %d:%d **\n",
145                                 dev_desc->dev, part_num);
146                 return(-1);
147         }
148 #ifdef CHECK_FOR_POWERPC_PLATTFORM
149         if(pve->platform!=0x01) {
150                 if(verb)
151                         printf ("** No PowerPC platform CD on %d:%d **\n",
152                                 dev_desc->dev, part_num);
153                 return(-1);
154         }
155 #endif
156         /* the validation entry seems to be ok, now search the "partition" */
157         entry_num=0;
158         offset=0x20;
159         sprintf ((char *)info->type, "U-Boot");
160         switch(dev_desc->if_type) {
161                 case IF_TYPE_IDE:
162                 case IF_TYPE_SATA:
163                 case IF_TYPE_ATAPI:
164                         sprintf ((char *)info->name, "hd%c%d",
165                                 'a' + dev_desc->dev, part_num);
166                         break;
167                 case IF_TYPE_SCSI:
168                         sprintf ((char *)info->name, "sd%c%d",
169                                 'a' + dev_desc->dev, part_num);
170                         break;
171                 case IF_TYPE_USB:
172                         sprintf ((char *)info->name, "usbd%c%d",
173                                 'a' + dev_desc->dev, part_num);
174                         break;
175                 case IF_TYPE_DOC:
176                         sprintf ((char *)info->name, "docd%c%d",
177                                 'a' + dev_desc->dev, part_num);
178                         break;
179                 default:
180                         sprintf ((char *)info->name, "xx%c%d",
181                                 'a' + dev_desc->dev, part_num);
182                         break;
183         }
184         /* the bootcatalog (including validation Entry) is limited to 2048Bytes
185          * (63 boot entries + validation entry) */
186          while(offset<2048) {
187                 pide=(iso_init_def_entry_t *)&tmpbuf[offset];
188                 if ((pide->boot_ind==0x88) ||
189                     (pide->boot_ind==0x00)) { /* Header Id for default Sections Entries */
190                         if(entry_num==part_num) { /* part found */
191                                 goto found;
192                         }
193                         entry_num++; /* count partitions Entries (boot and non bootables */
194                         offset+=0x20;
195                         continue;
196                 }
197                 if ((pide->boot_ind==0x90) ||   /* Section Header Entry */
198                     (pide->boot_ind==0x91) ||   /* Section Header Entry (last) */
199                     (pide->boot_ind==0x44)) {   /* Extension Indicator */
200                         offset+=0x20; /* skip unused entries */
201                 }
202                 else {
203                         if(verb)
204                                 printf ("** Partition %d not found on device %d **\n",
205                                         part_num,dev_desc->dev);
206                         return(-1);
207                 }
208         }
209         /* if we reach this point entire sector has been
210          * searched w/o succsess */
211         if(verb)
212                 printf ("** Partition %d not found on device %d **\n",
213                         part_num,dev_desc->dev);
214         return(-1);
215 found:
216         if(pide->boot_ind!=0x88) {
217                 if(verb)
218                         printf ("** Partition %d is not bootable on device %d **\n",
219                                 part_num,dev_desc->dev);
220                 return (-1);
221         }
222         switch(pide->boot_media) {
223                 case 0x00: /* no emulation */
224                         info->size=le16_to_int(pide->sec_cnt)>>2;
225                         break;
226                 case 0x01:      info->size=2400>>2; break; /* 1.2MByte Floppy */
227                 case 0x02:      info->size=2880>>2; break; /* 1.44MByte Floppy */
228                 case 0x03:      info->size=5760>>2; break; /* 2.88MByte Floppy */
229                 case 0x04:      info->size=2880>>2; break; /* dummy (HD Emulation) */
230                 default:        info->size=0; break;
231         }
232         newblkaddr=le32_to_int(pide->rel_block_addr);
233         info->start=newblkaddr;
234         PRINTF(" part %d found @ %lx size %lx\n",part_num,newblkaddr,info->size);
235         return 0;
236 }
237
238 int get_partition_info_iso(block_dev_desc_t * dev_desc, int part_num, disk_partition_t * info)
239 {
240         return(get_partition_info_iso_verb(dev_desc, part_num, info, 1));
241 }
242
243
244 void print_part_iso(block_dev_desc_t * dev_desc)
245 {
246         disk_partition_t info;
247         int i;
248         if(get_partition_info_iso_verb(dev_desc,0,&info,0)==-1) {
249                 printf("** No boot partition found on device %d **\n",dev_desc->dev);
250                 return;
251         }
252         printf("Part   Start     Sect x Size Type\n");
253         i=0;
254         do {
255                 printf (" %2d %8ld %8ld %6ld %.32s\n",
256                         i, info.start, info.size, info.blksz, info.type);
257                 i++;
258         } while (get_partition_info_iso_verb(dev_desc,i,&info,0)!=-1);
259 }
260
261 int test_part_iso (block_dev_desc_t *dev_desc)
262 {
263         disk_partition_t info;
264
265         return(get_partition_info_iso_verb(dev_desc,0,&info,0));
266 }
267
268 #endif