1 // SPDX-License-Identifier: GPL-2.0+
11 #include <image-sparse.h>
19 	struct part_info	*part;  member
34 			  struct part_info **part,  in fb_nand_lookup()  argument
48 	ret = find_dev_and_part(partname, &dev, &pnum, part);  in fb_nand_lookup()
55 	if (dev->id->type != MTD_DEV_TYPE_NAND) {  in fb_nand_lookup()
59 		return -EINVAL;  in fb_nand_lookup()
62 	*mtd = get_nand_dev_by_index(dev->id->num);  in fb_nand_lookup()
67 static int _fb_nand_erase(struct mtd_info *mtd, struct part_info *part)  in _fb_nand_erase()  argument
73 	opts.offset = part->offset;  in _fb_nand_erase()
74 	opts.length = part->size;  in _fb_nand_erase()
78 	       part->offset, part->offset + part->size);  in _fb_nand_erase()
85 	       part->size, part->name);  in _fb_nand_erase()
90 static int _fb_nand_write(struct mtd_info *mtd, struct part_info *part,  in _fb_nand_write()  argument
101 				   part->size - (offset - part->offset),  in _fb_nand_write()
108 	struct fb_nand_sparse *sparse = info->priv;  in fb_nand_sparse_write()
112 	ret = _fb_nand_write(sparse->mtd, sparse->part, (void *)buffer,  in fb_nand_sparse_write()
113 			     blk * info->blksz,  in fb_nand_sparse_write()
114 			     blkcnt * info->blksz, &written);  in fb_nand_sparse_write()
120 /* TODO - verify that the value "written" includes the "bad-blocks" ... */  in fb_nand_sparse_write()
123 	 * the return value must be 'blkcnt' ("good-blocks") plus the  in fb_nand_sparse_write()
124 	 * number of "bad-blocks" encountered within this space...  in fb_nand_sparse_write()
126 	return written / info->blksz;  in fb_nand_sparse_write()
135  * TODO - implement a function to determine the total number  in fb_nand_sparse_reserve()
137  * number ("blkcnt") of "good-blocks", starting at "blk"...  in fb_nand_sparse_reserve()
142 	 * the return value must be 'blkcnt' ("good-blocks") plus the  in fb_nand_sparse_reserve()
143 	 * number of "bad-blocks" encountered within this space...  in fb_nand_sparse_reserve()
149  * fastboot_nand_get_part_info() - Lookup NAND partion by name
164  * fastboot_nand_flash_write() - Write image to NAND for fastboot
174 	struct part_info *part;  in fastboot_nand_flash_write()  local
178 	ret = fb_nand_lookup(cmd, &mtd, &part, response);  in fastboot_nand_flash_write()
185 	ret = board_fastboot_write_partition_setup(part->name);  in fastboot_nand_flash_write()
194 		sparse_priv.part = part;  in fastboot_nand_flash_write()
196 		sparse.blksz = mtd->writesize;  in fastboot_nand_flash_write()
197 		sparse.start = part->offset / sparse.blksz;  in fastboot_nand_flash_write()
198 		sparse.size = part->size / sparse.blksz;  in fastboot_nand_flash_write()
213 		       part->offset);  in fastboot_nand_flash_write()
215 		ret = _fb_nand_write(mtd, part, download_buffer, part->offset,  in fastboot_nand_flash_write()
219 		       download_bytes, part->name);  in fastboot_nand_flash_write()
231  * fastboot_nand_flash_erase() - Erase NAND for fastboot
238 	struct part_info *part;  in fastboot_nand_erase()  local
242 	ret = fb_nand_lookup(cmd, &mtd, &part, response);  in fastboot_nand_erase()
249 	ret = board_fastboot_erase_partition_setup(part->name);  in fastboot_nand_erase()
253 	ret = _fb_nand_erase(mtd, part);  in fastboot_nand_erase()
255 		pr_err("failed erasing from device %s", mtd->name);  in fastboot_nand_erase()