]>
Commit | Line | Data |
---|---|---|
cc1c8a13 WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch. | |
4 | * | |
3765b3e7 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
cc1c8a13 WD |
6 | */ |
7 | ||
8 | #include <common.h> | |
9 | #include <command.h> | |
cc1c8a13 WD |
10 | #include "part_iso.h" |
11 | ||
2c1af9dc | 12 | #ifdef HAVE_BLOCK_DEVICE |
cc1c8a13 | 13 | |
1968e615 | 14 | /* #define ISO_PART_DEBUG */ |
cc1c8a13 WD |
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 | ||
d7ea4d4d EE |
60 | if (dev_desc->blksz != CD_SECTSIZE) |
61 | return -1; | |
62 | ||
cc1c8a13 WD |
63 | /* the first sector (sector 0x10) must be a primary volume desc */ |
64 | blkaddr=PVD_OFFSET; | |
65 | if (dev_desc->block_read (dev_desc->dev, PVD_OFFSET, 1, (ulong *) tmpbuf) != 1) | |
53677ef1 | 66 | return (-1); |
cc1c8a13 WD |
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 | } | |
77ddac94 | 73 | if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) { |
cc1c8a13 WD |
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++) { | |
c7de829c | 86 | PRINTF("Reading block %d\n", i); |
cc1c8a13 | 87 | if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *) tmpbuf) != 1) |
53677ef1 | 88 | return (-1); |
cc1c8a13 WD |
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 | } | |
53677ef1 | 98 | /* boot entry found */ |
cc1c8a13 WD |
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->dev, 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; | |
77ddac94 | 140 | sprintf ((char *)info->type, "U-Boot"); |
cc1c8a13 WD |
141 | switch(dev_desc->if_type) { |
142 | case IF_TYPE_IDE: | |
c7057b52 | 143 | case IF_TYPE_SATA: |
cc1c8a13 | 144 | case IF_TYPE_ATAPI: |
71665528 WD |
145 | sprintf ((char *)info->name, "hd%c%d", |
146 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
147 | break; |
148 | case IF_TYPE_SCSI: | |
71665528 WD |
149 | sprintf ((char *)info->name, "sd%c%d", |
150 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
151 | break; |
152 | case IF_TYPE_USB: | |
71665528 WD |
153 | sprintf ((char *)info->name, "usbd%c%d", |
154 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
155 | break; |
156 | case IF_TYPE_DOC: | |
71665528 WD |
157 | sprintf ((char *)info->name, "docd%c%d", |
158 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
159 | break; |
160 | default: | |
71665528 WD |
161 | sprintf ((char *)info->name, "xx%c%d", |
162 | 'a' + dev_desc->dev, part_num); | |
cc1c8a13 WD |
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 | ||
cc1c8a13 WD |
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 { | |
04735e9c FL |
236 | printf(" %2d " LBAFU " " LBAFU " %6ld %.32s\n", |
237 | i, info.start, info.size, info.blksz, info.type); | |
cc1c8a13 WD |
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 | ||
cde5c64d | 249 | #endif |