2 * Copyright (C) 2006-2008 Florian Fainelli <florian@openwrt.org>
3 * Mike Albon <malbon@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/mtd/map.h>
23 #include <linux/mtd/mtd.h>
24 #include <linux/mtd/partitions.h>
25 #include <linux/vmalloc.h>
26 #include <linux/platform_device.h>
31 #define BUSWIDTH 2 /* Buswidth */
32 #define EXTENDED_SIZE 0xBFC00000 /* Extended flash address */
34 #define PFX KBUILD_MODNAME ": "
36 extern int parse_redboot_partitions(struct mtd_info
*master
, struct mtd_partition
**pparts
, unsigned long fis_origin
);
37 static struct mtd_partition
*parsed_parts
;
39 static struct mtd_info
*bcm963xx_mtd_info
;
41 static struct map_info bcm963xx_map
= {
43 .bankwidth
= BUSWIDTH
,
46 static struct tagiddesc_t tagidtab
[NUM_TAGID
] = TAGID_DEFINITIONS
;
48 static uint32_t tagcrc32tab
[256] = {
49 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
50 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
51 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
52 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
53 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
54 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
55 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
56 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
57 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
58 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
59 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
60 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
61 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
62 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
63 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
64 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
65 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
66 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
67 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
68 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
69 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
70 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
71 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
72 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
73 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
74 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
75 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
76 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
77 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
78 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
79 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
80 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
83 static uint32_t tagcrc32(uint32_t crc
, uint8_t *data
, size_t len
)
86 crc
= (crc
>> 8) ^ tagcrc32tab
[(crc
^ *data
++) & 0xFF];
91 static int parse_cfe_partitions( struct mtd_info
*master
, struct mtd_partition
**pparts
)
93 int nrparts
= 3, curpart
= 0; /* CFE,NVRAM and global LINUX are always present. */
95 struct mtd_partition
*parts
;
98 unsigned int rootfsaddr
, kerneladdr
, spareaddr
;
99 unsigned int rootfslen
, kernellen
, sparelen
, totallen
;
100 unsigned char *tagid
;
104 uint32_t calctagidcrc
;
105 bool tagid_match
= false;
110 /* Allocate memory for buffer */
111 buf
= vmalloc(sizeof(union bcm_tag
));
116 ret
= master
->read(master
,master
->erasesize
,sizeof(union bcm_tag
), &retlen
, (void *)buf
);
117 if (retlen
!= sizeof(union bcm_tag
)){
122 /* tagId isn't in the same location, so we check each tagid against the
123 * tagid CRC. If the CRC is valid we have found the right tag and so
127 for (i
= 0; i
< NUM_TAGID
; i
++) {
130 matchtagid
= "bccfe";
131 tagid
= &(buf
->bccfe
.tagId
[0]);
132 sscanf(buf
->bccfe
.rootAddress
,"%u", &rootfsaddr
);
133 sscanf(buf
->bccfe
.rootLength
, "%u", &rootfslen
);
134 sscanf(buf
->bccfe
.kernelAddress
, "%u", &kerneladdr
);
135 sscanf(buf
->bccfe
.kernelLength
, "%u", &kernellen
);
136 sscanf(buf
->bccfe
.totalLength
, "%u", &totallen
);
137 tagidcrc
= *(uint32_t *)&(buf
->bccfe
.tagIdCRC
[0]);
138 tagversion
= &(buf
->bccfe
.tagVersion
[0]);
139 boardid
= &(buf
->bccfe
.boardid
[0]);
142 matchtagid
= "bc300";
143 tagid
= &(buf
->bc300
.tagId
[0]);
144 sscanf(buf
->bc300
.rootAddress
,"%u", &rootfsaddr
);
145 sscanf(buf
->bc300
.rootLength
, "%u", &rootfslen
);
146 sscanf(buf
->bc300
.kernelAddress
, "%u", &kerneladdr
);
147 sscanf(buf
->bc300
.kernelLength
, "%u", &kernellen
);
148 sscanf(buf
->bc300
.totalLength
, "%u", &totallen
);
149 tagidcrc
= *(uint32_t *)&(buf
->bc300
.tagIdCRC
[0]);
150 tagversion
= &(buf
->bc300
.tagVersion
[0]);
151 boardid
= &(buf
->bc300
.boardid
[0]);
154 matchtagid
= "ag306";
155 tagid
= &(buf
->ag306
.tagId
[0]);
156 sscanf(buf
->ag306
.rootAddress
,"%u", &rootfsaddr
);
157 sscanf(buf
->ag306
.rootLength
, "%u", &rootfslen
);
158 sscanf(buf
->ag306
.kernelAddress
, "%u", &kerneladdr
);
159 sscanf(buf
->ag306
.kernelLength
, "%u", &kernellen
);
160 sscanf(buf
->ag306
.totalLength
, "%u", &totallen
);
161 tagidcrc
= *(uint32_t *)&(buf
->ag306
.tagIdCRC
[0]);
162 tagversion
= &(buf
->ag306
.tagVersion
[0]);
163 boardid
= &(buf
->ag306
.boardid
[0]);
166 matchtagid
= "bc221";
167 tagid
= &(buf
->bc221
.tagId
[0]);
168 sscanf(buf
->bc221
.rootAddress
,"%u", &rootfsaddr
);
169 sscanf(buf
->bc221
.rootLength
, "%u", &rootfslen
);
170 sscanf(buf
->bc221
.kernelAddress
, "%u", &kerneladdr
);
171 sscanf(buf
->bc221
.kernelLength
, "%u", &kernellen
);
172 sscanf(buf
->bc221
.totalLength
, "%u", &totallen
);
173 tagidcrc
= *(uint32_t *)&(buf
->bc221
.tagIdCRC
[0]);
174 tagversion
= &(buf
->bc221
.tagVersion
[0]);
175 boardid
= &(buf
->bc221
.boardid
[0]);
178 matchtagid
= "bc310";
179 tagid
= &(buf
->bc310
.tagId
[0]);
180 sscanf(buf
->bc310
.rootAddress
,"%u", &rootfsaddr
);
181 sscanf(buf
->bc310
.rootLength
, "%u", &rootfslen
);
182 sscanf(buf
->bc310
.kernelAddress
, "%u", &kerneladdr
);
183 sscanf(buf
->bc310
.kernelLength
, "%u", &kernellen
);
184 sscanf(buf
->bc310
.totalLength
, "%u", &totallen
);
185 tagidcrc
= *(uint32_t *)&(buf
->bc310
.tagIdCRC
[0]);
186 tagversion
= &(buf
->bc310
.tagVersion
[0]);
187 boardid
= &(buf
->bc310
.boardid
[0]);
190 if (strncmp(tagid
, matchtagid
, TAGID_LEN
) != 0) {
194 calctagidcrc
= htonl(tagcrc32(IMAGETAG_CRC_START
, tagid
, TAGID_LEN
));
195 if (tagidcrc
== calctagidcrc
) {
202 printk(KERN_ERR PFX
"Failed to find a valid tag id\n");
206 printk(KERN_INFO PFX
"CFE boot tag found with version %s, board type %s, and tagid %s.\n",tagversion
,boardid
,tagid
);
208 rootfsaddr
= rootfsaddr
- EXTENDED_SIZE
;
209 kerneladdr
= kerneladdr
- EXTENDED_SIZE
;
210 spareaddr
= roundup(totallen
,master
->erasesize
) + master
->erasesize
;
211 sparelen
= master
->size
- spareaddr
- master
->erasesize
;
213 /* Determine number of partitions */
224 /* Ask kernel for more memory */
225 parts
= kzalloc(sizeof(*parts
) * nrparts
+ 10 * nrparts
, GFP_KERNEL
);
231 /* Start building partition list */
232 parts
[curpart
].name
= "CFE";
233 parts
[curpart
].offset
= 0;
234 parts
[curpart
].size
= master
->erasesize
;
238 parts
[curpart
].name
= "kernel";
239 parts
[curpart
].offset
= kerneladdr
;
240 parts
[curpart
].size
= kernellen
;
245 parts
[curpart
].name
= "rootfs";
246 parts
[curpart
].offset
= rootfsaddr
;
247 parts
[curpart
].size
= rootfslen
;
249 parts
[curpart
].size
+= sparelen
;
253 parts
[curpart
].name
= "nvram";
254 parts
[curpart
].offset
= master
->size
- master
->erasesize
;
255 parts
[curpart
].size
= master
->erasesize
;
257 /* Global partition "linux" to make easy firmware upgrade */
259 parts
[curpart
].name
= "linux";
260 parts
[curpart
].offset
= parts
[0].size
;
261 parts
[curpart
].size
= master
->size
- parts
[0].size
- parts
[3].size
;
263 for (i
= 0; i
< nrparts
; i
++)
264 printk(KERN_INFO PFX
"Partition %d is %s offset %llx and length %llx\n", i
, parts
[i
].name
, parts
[i
].offset
, parts
[i
].size
);
266 printk(KERN_INFO PFX
"Spare partition is %x offset and length %x\n", spareaddr
, sparelen
);
273 static int bcm963xx_detect_cfe(struct mtd_info
*master
)
275 int idoffset
= 0x4e0;
276 static char idstring
[8] = "CFE1CFE1";
281 ret
= master
->read(master
, idoffset
, 8, &retlen
, (void *)buf
);
283 printk(KERN_INFO PFX
"Read Signature value of %s\n", buf
);
285 return strncmp(idstring
, buf
, 8);
288 static int bcm963xx_probe(struct platform_device
*pdev
)
291 int parsed_nr_parts
= 0;
295 r
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
296 bcm963xx_map
.phys
= r
->start
;
297 bcm963xx_map
.size
= (r
->end
- r
->start
) + 1;
298 bcm963xx_map
.virt
= ioremap(r
->start
, r
->end
- r
->start
+ 1);
300 if (!bcm963xx_map
.virt
) {
301 printk(KERN_ERR PFX
"Failed to ioremap\n");
304 printk(KERN_INFO PFX
"0x%08lx at 0x%08x\n", bcm963xx_map
.size
, bcm963xx_map
.phys
);
306 simple_map_init(&bcm963xx_map
);
308 bcm963xx_mtd_info
= do_map_probe("cfi_probe", &bcm963xx_map
);
309 if (!bcm963xx_mtd_info
) {
310 printk(KERN_ERR PFX
"Failed to probe using CFI\n");
315 bcm963xx_mtd_info
->owner
= THIS_MODULE
;
317 /* This is mutually exclusive */
318 if (bcm963xx_detect_cfe(bcm963xx_mtd_info
) == 0) {
319 printk(KERN_INFO PFX
"CFE bootloader detected\n");
320 if (parsed_nr_parts
== 0) {
321 int ret
= parse_cfe_partitions(bcm963xx_mtd_info
, &parsed_parts
);
324 parsed_nr_parts
= ret
;
328 printk(KERN_INFO PFX
"assuming RedBoot bootloader\n");
329 if (bcm963xx_mtd_info
->size
> 0x00400000) {
330 printk(KERN_INFO PFX
"Support for extended flash memory size : 0x%llx ; ONLY 64MBIT SUPPORT\n", bcm963xx_mtd_info
->size
);
331 bcm963xx_map
.virt
= (u32
)(EXTENDED_SIZE
);
334 #ifdef CONFIG_MTD_REDBOOT_PARTS
335 if (parsed_nr_parts
== 0) {
336 int ret
= parse_redboot_partitions(bcm963xx_mtd_info
, &parsed_parts
, 0);
338 part_type
= "RedBoot";
339 parsed_nr_parts
= ret
;
345 return add_mtd_partitions(bcm963xx_mtd_info
, parsed_parts
, parsed_nr_parts
);
348 iounmap(bcm963xx_map
.virt
);
352 static int bcm963xx_remove(struct platform_device
*pdev
)
354 if (bcm963xx_mtd_info
) {
355 del_mtd_partitions(bcm963xx_mtd_info
);
356 map_destroy(bcm963xx_mtd_info
);
359 if (bcm963xx_map
.virt
) {
360 iounmap(bcm963xx_map
.virt
);
361 bcm963xx_map
.virt
= 0;
367 static struct platform_driver bcm63xx_mtd_dev
= {
368 .probe
= bcm963xx_probe
,
369 .remove
= bcm963xx_remove
,
371 .name
= "bcm963xx-flash",
372 .owner
= THIS_MODULE
,
376 static int __init
bcm963xx_mtd_init(void)
378 return platform_driver_register(&bcm63xx_mtd_dev
);
381 static void __exit
bcm963xx_mtd_exit(void)
383 platform_driver_unregister(&bcm63xx_mtd_dev
);
386 module_init(bcm963xx_mtd_init
);
387 module_exit(bcm963xx_mtd_exit
);
389 MODULE_LICENSE("GPL");
390 MODULE_DESCRIPTION("Broadcom BCM63xx MTD partition parser/mapping for CFE and RedBoot");
391 MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
392 MODULE_AUTHOR("Mike Albon <malbon@openwrt.org>");