11 static struct mtd_info *mtd;  variable
14 static void mxs_nand_command(struct mtd_info *mtd, unsigned int command,  in mxs_nand_command()  argument
17 	register struct nand_chip *chip = mtd_to_nand(mtd);  in mxs_nand_command()
21 	chip->cmd_ctrl(mtd, command, NAND_CLE);  in mxs_nand_command()
25 		chip->cmd_ctrl(mtd, column, NAND_ALE);  in mxs_nand_command()
26 		chip->cmd_ctrl(mtd, column >> 8, NAND_ALE);  in mxs_nand_command()
29 		chip->cmd_ctrl(mtd, page_addr, NAND_ALE);  in mxs_nand_command()
30 		chip->cmd_ctrl(mtd, page_addr >> 8, NAND_ALE);  in mxs_nand_command()
33 			chip->cmd_ctrl(mtd, page_addr >> 16, NAND_ALE);  in mxs_nand_command()
35 	chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0);  in mxs_nand_command()
38 		chip->cmd_ctrl(mtd, NAND_CMD_READSTART, NAND_CLE);  in mxs_nand_command()
39 		chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0);  in mxs_nand_command()
47 		if (chip->dev_ready(mtd))  in mxs_nand_command()
55 static int mxs_flash_full_ident(struct mtd_info *mtd)  in mxs_flash_full_ident()  argument
58 	struct nand_chip *chip = mtd_to_nand(mtd);  in mxs_flash_full_ident()
61 	type = nand_get_flash_type(mtd, chip, &nand_maf_id, &nand_dev_id, NULL);  in mxs_flash_full_ident()
64 		chip->select_chip(mtd, -1);  in mxs_flash_full_ident()
74 static int mxs_flash_onfi_ident(struct mtd_info *mtd)  in mxs_flash_onfi_ident()  argument
76 	register struct nand_chip *chip = mtd_to_nand(mtd);  in mxs_flash_onfi_ident()
83 	chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);  in mxs_flash_onfi_ident()
86 	chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);  in mxs_flash_onfi_ident()
89 	mfg_id = chip->read_byte(mtd);  in mxs_flash_onfi_ident()
90 	dev_id = chip->read_byte(mtd);  in mxs_flash_onfi_ident()
93 	chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);  in mxs_flash_onfi_ident()
95 		id_data[i] = chip->read_byte(mtd);  in mxs_flash_onfi_ident()
104 	chip->cmdfunc(mtd, NAND_CMD_READID, 0x20, -1);  in mxs_flash_onfi_ident()
105 	if (chip->read_byte(mtd) != 'O' || chip->read_byte(mtd) != 'N' ||  in mxs_flash_onfi_ident()
106 	    chip->read_byte(mtd) != 'F' || chip->read_byte(mtd) != 'I') {  in mxs_flash_onfi_ident()
111 	chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1);  in mxs_flash_onfi_ident()
112 	chip->read_buf(mtd, (uint8_t *)p, sizeof(*p));  in mxs_flash_onfi_ident()
113 	mtd->name = p->model;  in mxs_flash_onfi_ident()
114 	mtd->writesize = le32_to_cpu(p->byte_per_page);  in mxs_flash_onfi_ident()
115 	mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize;  in mxs_flash_onfi_ident()
116 	mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page);  in mxs_flash_onfi_ident()
118 	chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count;  in mxs_flash_onfi_ident()
120 	chip->page_shift = ffs(mtd->writesize) - 1;  in mxs_flash_onfi_ident()
121 	chip->phys_erase_shift = ffs(mtd->erasesize) - 1;  in mxs_flash_onfi_ident()
126 	debug("erasesize=%d (>>%d)\n", mtd->erasesize, chip->phys_erase_shift);  in mxs_flash_onfi_ident()
127 	debug("writesize=%d (>>%d)\n", mtd->writesize, chip->page_shift);  in mxs_flash_onfi_ident()
128 	debug("oobsize=%d\n", mtd->oobsize);  in mxs_flash_onfi_ident()
136 static int mxs_flash_ident(struct mtd_info *mtd)  in mxs_flash_ident()  argument
140 	ret = mxs_flash_full_ident(mtd);  in mxs_flash_ident()
142 	ret = mxs_flash_onfi_ident(mtd);  in mxs_flash_ident()
147 static int mxs_read_page_ecc(struct mtd_info *mtd, void *buf, unsigned int page)  in mxs_read_page_ecc()  argument
149 	register struct nand_chip *chip = mtd_to_nand(mtd);  in mxs_read_page_ecc()
152 	chip->cmdfunc(mtd, NAND_CMD_READ0, 0x0, page);  in mxs_read_page_ecc()
153 	ret = nand_chip.ecc.read_page(mtd, chip, buf, 1, page);  in mxs_read_page_ecc()
161 static int is_badblock(struct mtd_info *mtd, loff_t offs, int allowbbt)  in is_badblock()  argument
163 	register struct nand_chip *chip = mtd_to_nand(mtd);  in is_badblock()
169 	chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page);  in is_badblock()
170 	memset(chip->oob_poi, 0, mtd->oobsize);  in is_badblock()
171 	chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);  in is_badblock()
176 /* setup mtd and nand structs and init mxs_nand driver */
185 	mtd = nand_to_mtd(&nand_chip);  in nand_init()
186 	/* set mtd functions */  in nand_init()
192 	if (mxs_flash_ident(mtd)) {  in nand_init()
201 	nand_chip.oob_poi = nand_chip.buffers->databuf + mtd->writesize;  in nand_init()
203 	mtd->size = nand_chip.chipsize;  in nand_init()
204 	nand_chip.scan_bbt(mtd);  in nand_init()
205 	mxs_nand_setup_ecc(mtd);  in nand_init()
215 	chip = mtd_to_nand(mtd);  in nand_spl_load_image()
219 	nand_page_per_block = mtd->erasesize / mtd->writesize;  in nand_spl_load_image()
223 	size = roundup(size, mtd->writesize);  in nand_spl_load_image()
225 		if (mxs_read_page_ecc(mtd, buf, page) < 0)  in nand_spl_load_image()
227 		sz += mtd->writesize;  in nand_spl_load_image()
228 		offs += mtd->writesize;  in nand_spl_load_image()
230 		buf += mtd->writesize;  in nand_spl_load_image()
241 			while (is_badblock(mtd, offs, 1)) {  in nand_spl_load_image()
244 				if (page >= mtd->size >> chip->page_shift)  in nand_spl_load_image()
253 int nand_default_bbt(struct mtd_info *mtd)  in nand_default_bbt()  argument