2  * Parse RedBoot-style Flash Image System (FIS) tables and
6  * Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org>
20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
40     unsigned char _pad[256-(16+7*sizeof(uint32_t))];
50 static int directory = CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK;  variable
51 module_param(directory, int, 0);
79 	if ( directory < 0 ) {  in parse_redboot_partitions()
80 		offset = master->size + directory * master->erasesize;  in parse_redboot_partitions()
84 				printk(KERN_NOTICE "Failed to find a non-bad block to check for RedBoot partition table\n");  in parse_redboot_partitions()
85 				return -EIO;  in parse_redboot_partitions()
87 			offset -= master->erasesize;  in parse_redboot_partitions()
90 		offset = directory * master->erasesize;  in parse_redboot_partitions()
92 			offset += master->erasesize;  in parse_redboot_partitions()
93 			if (offset == master->size)  in parse_redboot_partitions()
97 	buf = vmalloc(master->erasesize);  in parse_redboot_partitions()
100 		return -ENOMEM;  in parse_redboot_partitions()
103 	       master->name, offset);  in parse_redboot_partitions()
105 	ret = mtd_read(master, offset, master->erasesize, &retlen,  in parse_redboot_partitions()
111 	if (retlen != master->erasesize) {  in parse_redboot_partitions()
112 		ret = -EIO;  in parse_redboot_partitions()
116 	numslots = (master->erasesize / sizeof(struct fis_image_desc));  in parse_redboot_partitions()
118 		if (!memcmp(buf[i].name, "FIS directory", 14)) {  in parse_redboot_partitions()
119 			/* This is apparently the FIS directory entry for the  in parse_redboot_partitions()
120 			 * FIS directory itself.  The FIS directory size is  in parse_redboot_partitions()
123 			 * a byte swapped FIS directory - swap all the entries!  in parse_redboot_partitions()
128 			/* RedBoot can combine the FIS directory and  in parse_redboot_partitions()
130 			   we assume wrong-endian if either the swapped  in parse_redboot_partitions()
134 			if (swab32(buf[i].size) == master->erasesize ||  in parse_redboot_partitions()
135 			    (buf[i].size > master->erasesize  in parse_redboot_partitions()
136 			     && swab32(buf[i].size) < master->erasesize)) {  in parse_redboot_partitions()
138 				/* Update numslots based on actual FIS directory size */  in parse_redboot_partitions()
164 			} else if (buf[i].size < master->erasesize) {  in parse_redboot_partitions()
165 				/* Update numslots based on actual FIS directory size */  in parse_redboot_partitions()
174 		       master->name);  in parse_redboot_partitions()
195 			ret = -ENOMEM;  in parse_redboot_partitions()
198 		new_fl->img = &buf[i];  in parse_redboot_partitions()
199 		if (data && data->origin)  in parse_redboot_partitions()
200 			buf[i].flash_base -= data->origin;  in parse_redboot_partitions()
202 			buf[i].flash_base &= master->size-1;  in parse_redboot_partitions()
208 		while(*prev && (*prev)->img->flash_base < new_fl->img->flash_base)  in parse_redboot_partitions()
209 			prev = &(*prev)->next;  in parse_redboot_partitions()
210 		new_fl->next = *prev;  in parse_redboot_partitions()
216 	if (fl->img->flash_base) {  in parse_redboot_partitions()
221 	for (tmp_fl = fl; tmp_fl->next; tmp_fl = tmp_fl->next) {  in parse_redboot_partitions()
222 …if (tmp_fl->img->flash_base + tmp_fl->img->size + master->erasesize <= tmp_fl->next->img->flash_ba…  in parse_redboot_partitions()
231 		ret = -ENOMEM;  in parse_redboot_partitions()
246 	if (fl->img->flash_base) {  in parse_redboot_partitions()
248 	       parts[0].size = fl->img->flash_base;  in parse_redboot_partitions()
254 		parts[i].size = fl->img->size;  in parse_redboot_partitions()
255 		parts[i].offset = fl->img->flash_base;  in parse_redboot_partitions()
258 		strcpy(names, fl->img->name);  in parse_redboot_partitions()
262 				!memcmp(names, "FIS directory", 14)) {  in parse_redboot_partitions()
269 …if(fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_bas…  in parse_redboot_partitions()
271 			parts[i].offset = parts[i-1].size + parts[i-1].offset;  in parse_redboot_partitions()
272 			parts[i].size = fl->next->img->flash_base - parts[i].offset;  in parse_redboot_partitions()
277 		fl = fl->next;  in parse_redboot_partitions()
285 		fl = fl->next;  in parse_redboot_partitions()