layout->eccbytes = ecc->bytes;
	layout->oobavail = mtd->oobsize - (ecc->bytes * nsectors) - 2;
	for (i = 1; i < nsectors; i++) {
		if (i == 0) {
			layout->oobfree[0].offset = 2;
			layout->oobfree[0].length = 2;
		} else {
			layout->oobfree[i].offset = (ecc->bytes + 4) * i;
			layout->oobfree[i].length = 4;
		}

		for (j = 0; j < ecc->bytes; j++)
			layout->eccpos[(nsectors * i) + j] =
					layout->oobfree[i].offset +
					layout->oobfree[i].length + j;
	}
	layout->oobfree[i].length = mtd->oobsize - layout->oobfree[0].offset;
	if (layout->oobfree[i].length)
		layout->oobfree[i].offset = (ecc->bytes + 4) * nsectors;
	ecc->layout = layout;