1 // SPDX-License-Identifier: GPL-2.0-or-later
4     drivers/mtd/afs.c: ARM Flash Layout/Partitioning
6     Copyright © 2000 ARM Limited
10    This is access code for flashes using ARM's flash partitioning
34 	u32 type;		/* Area type: ARM Image, SIB, customer   */
47 	u32 headerType;		/* AIF, RLF, s-record etc.               */
56 	while (num--)  in word_sum()
81 	u_int ptr = off + mtd->erasesize - 12;  in afs_is_v1()
101 	u_int ptr = off + mtd->erasesize - 8;  in afs_is_v2()
140 	mask = mtd->size - 1;  in afs_parse_v1_partition()
142 	ptr = off + mtd->erasesize - sizeof(fs);  in afs_parse_v1_partition()
145 		ret = -EINVAL;  in afs_parse_v1_partition()
155 		return -EINVAL;  in afs_parse_v1_partition()
186 		return -EINVAL;  in afs_parse_v1_partition()
190 		return -EINVAL;  in afs_parse_v1_partition()
193 	 * Validate the name - it must be NUL terminated.  in afs_parse_v1_partition()
199 		return -EINVAL;  in afs_parse_v1_partition()
201 	part->name = kstrdup(iis.name, GFP_KERNEL);  in afs_parse_v1_partition()
202 	if (!part->name)  in afs_parse_v1_partition()
203 		return -ENOMEM;  in afs_parse_v1_partition()
205 	part->size = (iis.length + mtd->erasesize - 1) & ~(mtd->erasesize - 1);  in afs_parse_v1_partition()
206 	part->offset = img_ptr;  in afs_parse_v1_partition()
207 	part->mask_flags = 0;  in afs_parse_v1_partition()
210 	       img_ptr, part->size / 1024,  in afs_parse_v1_partition()
211 	       iis.imageNumber, part->name);  in afs_parse_v1_partition()
235 	pr_debug("Parsing v2 partition @%08x-%08x\n",  in afs_parse_v2_partition()
236 		 off, off + mtd->erasesize);  in afs_parse_v2_partition()
239 	ptr = off + mtd->erasesize - sizeof(footer);  in afs_parse_v2_partition()
244 		return -EIO;  in afs_parse_v2_partition()
248 	ptr = off + mtd->erasesize - sizeof(footer) - footer[8];  in afs_parse_v2_partition()
258 		return -EIO;  in afs_parse_v2_partition()
276 		return -EINVAL;  in afs_parse_v2_partition()
306 		region_end += (mtd->erasesize - 1);  in afs_parse_v2_partition()
307 		region_end &= ~(mtd->erasesize -1);  in afs_parse_v2_partition()
312 		part->name = kstrdup(name, GFP_KERNEL);  in afs_parse_v2_partition()
313 		if (!part->name)  in afs_parse_v2_partition()
314 			return -ENOMEM;  in afs_parse_v2_partition()
315 		part->offset = region_start;  in afs_parse_v2_partition()
316 		part->size = region_end - region_start;  in afs_parse_v2_partition()
317 		part->mask_flags = 0;  in afs_parse_v2_partition()
333 	for (i = off = sz = 0; off < mtd->size; off += mtd->erasesize) {  in parse_afs_partitions()
349 		return -ENOMEM;  in parse_afs_partitions()
354 	for (i = off = 0; off < mtd->size; off += mtd->erasesize) {  in parse_afs_partitions()
373 	while (--i >= 0)  in parse_afs_partitions()
381 	{ .compatible = "arm,arm-firmware-suite" },
393 MODULE_AUTHOR("ARM Ltd");
394 MODULE_DESCRIPTION("ARM Firmware Suite partition parser");