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wdenkfe8c2802002-11-03 00:38:21 +00001/*
2 * (C) Copyright 2001
3 * Raymond Lo, lo@routefree.com
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02006 * SPDX-License-Identifier: GPL-2.0+
wdenkfe8c2802002-11-03 00:38:21 +00007 */
8
9/*
10 * Support for harddisk partitions.
11 *
12 * To be compatible with LinuxPPC and Apple we use the standard Apple
13 * SCSI disk partitioning scheme. For more information see:
14 * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
15 */
16
17#include <common.h>
18#include <command.h>
19#include <ide.h>
Simon Glasscf92e052015-09-02 17:24:58 -060020#include <memalign.h>
wdenkfe8c2802002-11-03 00:38:21 +000021#include "part_dos.h"
22
Stephen Warren2c1af9d2013-02-28 15:03:46 +000023#ifdef HAVE_BLOCK_DEVICE
wdenkfe8c2802002-11-03 00:38:21 +000024
Darwin Dingel4a36be92014-06-06 15:48:26 +120025#define DOS_PART_DEFAULT_SECTOR 512
26
wdenkfe8c2802002-11-03 00:38:21 +000027/* Convert char[4] in little endian format to the host format integer
28 */
Stefan Monnierd29892b2015-08-25 15:24:13 -040029static inline unsigned int le32_to_int(unsigned char *le32)
wdenkfe8c2802002-11-03 00:38:21 +000030{
31 return ((le32[3] << 24) +
32 (le32[2] << 16) +
33 (le32[1] << 8) +
34 le32[0]
35 );
36}
37
38static inline int is_extended(int part_type)
39{
40 return (part_type == 0x5 ||
41 part_type == 0xf ||
42 part_type == 0x85);
43}
44
Rob Herring40e0e562012-08-23 11:31:43 +000045static inline int is_bootable(dos_partition_t *p)
46{
47 return p->boot_ind == 0x80;
48}
49
Stefan Monnierd29892b2015-08-25 15:24:13 -040050static void print_one_part(dos_partition_t *p, lbaint_t ext_part_sector,
Stephen Warrene2e9b372012-10-08 08:14:40 +000051 int part_num, unsigned int disksig)
wdenkfe8c2802002-11-03 00:38:21 +000052{
Stefan Monnierd29892b2015-08-25 15:24:13 -040053 lbaint_t lba_start = ext_part_sector + le32_to_int (p->start4);
54 lbaint_t lba_size = le32_to_int (p->size4);
wdenkfe8c2802002-11-03 00:38:21 +000055
Stefan Monnierd29892b2015-08-25 15:24:13 -040056 printf("%3d\t%-10" LBAFlength "u\t%-10" LBAFlength
57 "u\t%08x-%02x\t%02x%s%s\n",
Stephen Warrene2e9b372012-10-08 08:14:40 +000058 part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
Rob Herring40e0e562012-08-23 11:31:43 +000059 (is_extended(p->sys_ind) ? " Extd" : ""),
60 (is_bootable(p) ? " Boot" : ""));
wdenkfe8c2802002-11-03 00:38:21 +000061}
62
wdenk7205e402003-09-10 22:30:53 +000063static int test_block_type(unsigned char *buffer)
64{
Egbert Eich9d956e02013-04-09 05:46:14 +000065 int slot;
66 struct dos_partition *p;
67
wdenk7205e402003-09-10 22:30:53 +000068 if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
69 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
70 return (-1);
71 } /* no DOS Signature at all */
Egbert Eich9d956e02013-04-09 05:46:14 +000072 p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
73 for (slot = 0; slot < 3; slot++) {
74 if (p->boot_ind != 0 && p->boot_ind != 0x80) {
75 if (!slot &&
76 (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
77 "FAT", 3) == 0 ||
78 strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
79 "FAT32", 5) == 0)) {
80 return DOS_PBR; /* is PBR */
81 } else {
82 return -1;
83 }
84 }
Wolfgang Denk66c2d732010-07-19 11:36:57 +020085 }
wdenk7205e402003-09-10 22:30:53 +000086 return DOS_MBR; /* Is MBR */
87}
88
wdenkfe8c2802002-11-03 00:38:21 +000089
Simon Glass084bf4c2016-02-29 15:26:04 -070090static int part_test_dos(struct blk_desc *dev_desc)
wdenkfe8c2802002-11-03 00:38:21 +000091{
Eric Nelsondec049d2012-03-03 12:02:20 +000092 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
wdenkfe8c2802002-11-03 00:38:21 +000093
Simon Glass2a981dc2016-02-29 15:25:52 -070094 if (blk_dread(dev_desc, 0, 1, (ulong *)buffer) != 1)
Stephen Warrend1efb642012-10-05 13:17:40 +000095 return -1;
96
97 if (test_block_type(buffer) != DOS_MBR)
98 return -1;
99
100 return 0;
wdenkfe8c2802002-11-03 00:38:21 +0000101}
102
103/* Print a partition that is relative to its Extended partition table
104 */
Simon Glass4101f682016-02-29 15:25:34 -0700105static void print_partition_extended(struct blk_desc *dev_desc,
Stefan Monnierd29892b2015-08-25 15:24:13 -0400106 lbaint_t ext_part_sector,
107 lbaint_t relative,
Stephen Warrene2e9b372012-10-08 08:14:40 +0000108 int part_num, unsigned int disksig)
wdenkfe8c2802002-11-03 00:38:21 +0000109{
Eric Nelsondec049d2012-03-03 12:02:20 +0000110 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
wdenkfe8c2802002-11-03 00:38:21 +0000111 dos_partition_t *pt;
112 int i;
113
Simon Glass2a981dc2016-02-29 15:25:52 -0700114 if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
Stefan Monnierd29892b2015-08-25 15:24:13 -0400115 printf ("** Can't read partition table on %d:" LBAFU " **\n",
Simon Glassbcce53d2016-02-29 15:25:51 -0700116 dev_desc->devnum, ext_part_sector);
wdenkfe8c2802002-11-03 00:38:21 +0000117 return;
118 }
wdenk7205e402003-09-10 22:30:53 +0000119 i=test_block_type(buffer);
Stephen Warrend1efb642012-10-05 13:17:40 +0000120 if (i != DOS_MBR) {
wdenkfe8c2802002-11-03 00:38:21 +0000121 printf ("bad MBR sector signature 0x%02x%02x\n",
122 buffer[DOS_PART_MAGIC_OFFSET],
123 buffer[DOS_PART_MAGIC_OFFSET + 1]);
124 return;
125 }
Stephen Warrend1efb642012-10-05 13:17:40 +0000126
Stephen Warrene2e9b372012-10-08 08:14:40 +0000127 if (!ext_part_sector)
128 disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
129
wdenkfe8c2802002-11-03 00:38:21 +0000130 /* Print all primary/logical partitions */
131 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
132 for (i = 0; i < 4; i++, pt++) {
133 /*
wdenk8bde7f72003-06-27 21:31:46 +0000134 * fdisk does not show the extended partitions that
wdenkfe8c2802002-11-03 00:38:21 +0000135 * are not in the MBR
136 */
137
138 if ((pt->sys_ind != 0) &&
139 (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
Stephen Warrene2e9b372012-10-08 08:14:40 +0000140 print_one_part(pt, ext_part_sector, part_num, disksig);
wdenkfe8c2802002-11-03 00:38:21 +0000141 }
142
143 /* Reverse engr the fdisk part# assignment rule! */
144 if ((ext_part_sector == 0) ||
145 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
146 part_num++;
147 }
148 }
149
150 /* Follows the extended partitions */
151 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
152 for (i = 0; i < 4; i++, pt++) {
153 if (is_extended (pt->sys_ind)) {
Stefan Monnierd29892b2015-08-25 15:24:13 -0400154 lbaint_t lba_start
155 = le32_to_int (pt->start4) + relative;
wdenkfe8c2802002-11-03 00:38:21 +0000156
Stephen Warren304b5712012-10-08 08:14:38 +0000157 print_partition_extended(dev_desc, lba_start,
158 ext_part_sector == 0 ? lba_start : relative,
Stephen Warrene2e9b372012-10-08 08:14:40 +0000159 part_num, disksig);
wdenkfe8c2802002-11-03 00:38:21 +0000160 }
161 }
162
163 return;
164}
165
166
167/* Print a partition that is relative to its Extended partition table
168 */
Simon Glass3e8bd462016-02-29 15:25:48 -0700169static int part_get_info_extended(struct blk_desc *dev_desc,
170 lbaint_t ext_part_sector, lbaint_t relative,
171 int part_num, int which_part,
172 disk_partition_t *info, unsigned int disksig)
wdenkfe8c2802002-11-03 00:38:21 +0000173{
Eric Nelsondec049d2012-03-03 12:02:20 +0000174 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
wdenkfe8c2802002-11-03 00:38:21 +0000175 dos_partition_t *pt;
176 int i;
Darwin Dingel4a36be92014-06-06 15:48:26 +1200177 int dos_type;
wdenkfe8c2802002-11-03 00:38:21 +0000178
Simon Glass2a981dc2016-02-29 15:25:52 -0700179 if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
Stefan Monnierd29892b2015-08-25 15:24:13 -0400180 printf ("** Can't read partition table on %d:" LBAFU " **\n",
Simon Glassbcce53d2016-02-29 15:25:51 -0700181 dev_desc->devnum, ext_part_sector);
wdenkfe8c2802002-11-03 00:38:21 +0000182 return -1;
183 }
184 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
185 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
186 printf ("bad MBR sector signature 0x%02x%02x\n",
187 buffer[DOS_PART_MAGIC_OFFSET],
188 buffer[DOS_PART_MAGIC_OFFSET + 1]);
189 return -1;
190 }
191
Stephen Warrend27b5f92012-09-21 09:51:00 +0000192#ifdef CONFIG_PARTITION_UUIDS
193 if (!ext_part_sector)
194 disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
195#endif
196
wdenkfe8c2802002-11-03 00:38:21 +0000197 /* Print all primary/logical partitions */
198 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
199 for (i = 0; i < 4; i++, pt++) {
200 /*
wdenk8bde7f72003-06-27 21:31:46 +0000201 * fdisk does not show the extended partitions that
202 * are not in the MBR
wdenkfe8c2802002-11-03 00:38:21 +0000203 */
Daniel Mack78f4ca72009-09-28 11:40:38 +0200204 if (((pt->boot_ind & ~0x80) == 0) &&
205 (pt->sys_ind != 0) &&
wdenk7f70e852003-05-20 14:25:27 +0000206 (part_num == which_part) &&
207 (is_extended(pt->sys_ind) == 0)) {
Darwin Dingel4a36be92014-06-06 15:48:26 +1200208 info->blksz = DOS_PART_DEFAULT_SECTOR;
Steve Raee04350d2014-05-26 11:52:23 -0700209 info->start = (lbaint_t)(ext_part_sector +
210 le32_to_int(pt->start4));
211 info->size = (lbaint_t)le32_to_int(pt->size4);
wdenkfe8c2802002-11-03 00:38:21 +0000212 switch(dev_desc->if_type) {
213 case IF_TYPE_IDE:
Dave Liuc7057b52008-03-26 22:49:44 +0800214 case IF_TYPE_SATA:
wdenkfe8c2802002-11-03 00:38:21 +0000215 case IF_TYPE_ATAPI:
Simon Glassbcce53d2016-02-29 15:25:51 -0700216 sprintf((char *)info->name, "hd%c%d",
217 'a' + dev_desc->devnum,
218 part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000219 break;
220 case IF_TYPE_SCSI:
Simon Glassbcce53d2016-02-29 15:25:51 -0700221 sprintf((char *)info->name, "sd%c%d",
222 'a' + dev_desc->devnum,
223 part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000224 break;
225 case IF_TYPE_USB:
Simon Glassbcce53d2016-02-29 15:25:51 -0700226 sprintf((char *)info->name, "usbd%c%d",
227 'a' + dev_desc->devnum,
228 part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000229 break;
230 case IF_TYPE_DOC:
Simon Glassbcce53d2016-02-29 15:25:51 -0700231 sprintf((char *)info->name, "docd%c%d",
232 'a' + dev_desc->devnum,
233 part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000234 break;
235 default:
Simon Glassbcce53d2016-02-29 15:25:51 -0700236 sprintf((char *)info->name, "xx%c%d",
237 'a' + dev_desc->devnum,
238 part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000239 break;
240 }
241 /* sprintf(info->type, "%d, pt->sys_ind); */
Ben Whitten192bc692015-12-30 13:05:58 +0000242 strcpy((char *)info->type, "U-Boot");
Rob Herring40e0e562012-08-23 11:31:43 +0000243 info->bootable = is_bootable(pt);
Stephen Warrend27b5f92012-09-21 09:51:00 +0000244#ifdef CONFIG_PARTITION_UUIDS
245 sprintf(info->uuid, "%08x-%02x", disksig, part_num);
246#endif
wdenkfe8c2802002-11-03 00:38:21 +0000247 return 0;
248 }
249
250 /* Reverse engr the fdisk part# assignment rule! */
251 if ((ext_part_sector == 0) ||
252 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
253 part_num++;
254 }
255 }
256
257 /* Follows the extended partitions */
258 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
259 for (i = 0; i < 4; i++, pt++) {
260 if (is_extended (pt->sys_ind)) {
Stefan Monnierd29892b2015-08-25 15:24:13 -0400261 lbaint_t lba_start
262 = le32_to_int (pt->start4) + relative;
wdenkfe8c2802002-11-03 00:38:21 +0000263
Simon Glass3e8bd462016-02-29 15:25:48 -0700264 return part_get_info_extended(dev_desc, lba_start,
wdenkfe8c2802002-11-03 00:38:21 +0000265 ext_part_sector == 0 ? lba_start : relative,
Stephen Warrend27b5f92012-09-21 09:51:00 +0000266 part_num, which_part, info, disksig);
wdenkfe8c2802002-11-03 00:38:21 +0000267 }
268 }
Darwin Dingel4a36be92014-06-06 15:48:26 +1200269
270 /* Check for DOS PBR if no partition is found */
271 dos_type = test_block_type(buffer);
272
273 if (dos_type == DOS_PBR) {
274 info->start = 0;
275 info->size = dev_desc->lba;
276 info->blksz = DOS_PART_DEFAULT_SECTOR;
277 info->bootable = 0;
Ben Whitten192bc692015-12-30 13:05:58 +0000278 strcpy((char *)info->type, "U-Boot");
Darwin Dingel4a36be92014-06-06 15:48:26 +1200279#ifdef CONFIG_PARTITION_UUIDS
280 info->uuid[0] = 0;
281#endif
282 return 0;
283 }
284
wdenkfe8c2802002-11-03 00:38:21 +0000285 return -1;
286}
287
Simon Glass084bf4c2016-02-29 15:26:04 -0700288void part_print_dos(struct blk_desc *dev_desc)
wdenkfe8c2802002-11-03 00:38:21 +0000289{
Stephen Warrene2e9b372012-10-08 08:14:40 +0000290 printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
291 print_partition_extended(dev_desc, 0, 0, 1, 0);
wdenkfe8c2802002-11-03 00:38:21 +0000292}
293
Simon Glass3e8bd462016-02-29 15:25:48 -0700294int part_get_info_dos(struct blk_desc *dev_desc, int part,
295 disk_partition_t *info)
wdenkfe8c2802002-11-03 00:38:21 +0000296{
Simon Glass3e8bd462016-02-29 15:25:48 -0700297 return part_get_info_extended(dev_desc, 0, 0, 1, part, info, 0);
wdenkfe8c2802002-11-03 00:38:21 +0000298}
299
Simon Glass96e5b032016-02-29 15:25:47 -0700300U_BOOT_PART_TYPE(dos) = {
301 .name = "DOS",
302 .part_type = PART_TYPE_DOS,
Simon Glass3e8bd462016-02-29 15:25:48 -0700303 .get_info = part_get_info_ptr(part_get_info_dos),
Simon Glass084bf4c2016-02-29 15:26:04 -0700304 .print = part_print_ptr(part_print_dos),
305 .test = part_test_dos,
Simon Glass96e5b032016-02-29 15:25:47 -0700306};
wdenkfe8c2802002-11-03 00:38:21 +0000307
Jon Loeligercde5c642007-07-09 17:22:37 -0500308#endif