diff --git a/common/Kconfig b/common/Kconfig
index f7ff046..aac9f1a 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -101,6 +101,7 @@
 	depends on BAREBOX_UPDATE
 	depends on MTD_WRITE
 	depends on NAND_MXS
+	select BCH if ARCH_IMX6
 	default y
 
 config UBIFORMAT
diff --git a/common/imx-bbu-nand-fcb.c b/common/imx-bbu-nand-fcb.c
index 34a5f83..5d3d3f7 100644
--- a/common/imx-bbu-nand-fcb.c
+++ b/common/imx-bbu-nand-fcb.c
@@ -33,9 +33,12 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
 #include <linux/stat.h>
+#include <linux/bch.h>
+#include <linux/bitops.h>
 #include <io.h>
 #include <crc.h>
 #include <mach/generic.h>
+#include <mach/imx6.h>
 #include <mtd/mtd-peb.h>
 
 struct dbbt_block {
@@ -129,6 +132,132 @@
 	return p;
 }
 
+static uint8_t reverse_bit(uint8_t b)
+{
+	b = (b & 0xf0) >> 4 | (b & 0x0f) << 4;
+	b = (b & 0xcc) >> 2 | (b & 0x33) << 2;
+	b = (b & 0xaa) >> 1 | (b & 0x55) << 1;
+
+	return b;
+}
+
+static void encode_bch_ecc(void *buf, struct fcb_block *fcb, int eccbits)
+{
+	int i, j, m = 13;
+	int blocksize = 128;
+	int numblocks = 8;
+	int ecc_buf_size = (m * eccbits + 7) / 8;
+	struct bch_control *bch = init_bch(m, eccbits, 0);
+	uint8_t *ecc_buf = xmalloc(ecc_buf_size);
+	uint8_t *tmp_buf = xzalloc(blocksize * numblocks);
+	uint8_t *psrc, *pdst;
+
+	/*
+	 * The blocks here are bit aligned. If eccbits is a multiple of 8,
+	 * we just can copy bytes. Otherwiese we must move the blocks to
+	 * the next free bit position.
+	 */
+	BUG_ON(eccbits % 8);
+
+	memcpy(tmp_buf, fcb, sizeof(*fcb));
+
+	for (i = 0; i < numblocks; i++) {
+		memset(ecc_buf, 0, ecc_buf_size);
+		psrc = tmp_buf + i * blocksize;
+		pdst = buf + i * (blocksize + ecc_buf_size);
+
+		/* copy data byte aligned to destination buf */
+		memcpy(pdst, psrc, blocksize);
+
+		/*
+		 * imx-kobs use a modified encode_bch which reverse the
+		 * bit order of the data before calculating bch.
+		 * Do this in the buffer and use the bch lib here.
+		 */
+		for (j = 0; j < blocksize; j++)
+			psrc[j] = reverse_bit(psrc[j]);
+
+		encode_bch(bch, psrc, blocksize, ecc_buf);
+
+		/* reverse ecc bit */
+		for (j = 0; j < ecc_buf_size; j++)
+			ecc_buf[j] = reverse_bit(ecc_buf[j]);
+
+		/* Here eccbuf is byte aligned and we can just copy it */
+		memcpy(pdst + blocksize, ecc_buf, ecc_buf_size);
+	}
+
+	free(ecc_buf);
+	free(tmp_buf);
+	free_bch(bch);
+}
+
+struct fcb_block *read_fcb_bch(void *rawpage, int eccbits)
+{
+	int i, j, ret, errbit, m = 13;
+	int blocksize = 128;
+	int numblocks = 8;
+	int ecc_buf_size = (m * eccbits + 7) / 8;
+	struct bch_control *bch = init_bch(m, eccbits, 0);
+	uint8_t *fcb = xmalloc(numblocks * blocksize);
+	uint8_t *ecc_buf = xmalloc(ecc_buf_size);
+	uint8_t *data_buf = xmalloc(blocksize);
+	unsigned int *errloc = xmalloc(eccbits * sizeof(*errloc));
+	uint8_t *psrc, *pdst;
+
+	/* see encode_bch_ecc */
+	BUG_ON(eccbits % 8);
+
+	for (i = 0; i < numblocks; i++) {
+		psrc = rawpage + 32 + i * (blocksize + ecc_buf_size);
+		pdst = fcb + i * blocksize;
+
+		/* reverse data bit */
+		for (j = 0; j < blocksize; j++)
+			data_buf[j] = reverse_bit(psrc[j]);
+
+		/* reverse ecc bit */
+		for (j = 0; j < ecc_buf_size; j++)
+			ecc_buf[j] = reverse_bit(psrc[j + blocksize]);
+
+		ret = decode_bch(bch, data_buf, blocksize, ecc_buf,
+				 NULL, NULL, errloc);
+
+		if (ret < 0) {
+			pr_err("Uncorrectable error at block %d\n", i);
+			free(fcb);
+			fcb = ERR_PTR(ret);
+			goto out;
+		}
+		if (ret > 0)
+			pr_info("Found %d correctable errors in block %d\n",
+				ret, i);
+
+		for (j = 0; j < ret; j++) {
+			/*
+			 * calculate the reverse position
+			 * pos - (pos % 8) -> byte offset
+			 * 7 - (pos % 8) -> reverse bit position
+			 */
+			errbit = errloc[j] - 2 * (errloc[j] % 8) + 7;
+			pr_debug("Found error: bit %d in block %d\n",
+				 errbit, i);
+			if (errbit < blocksize * 8)
+				change_bit(errbit, psrc);
+			/* else error in ecc, ignore it */
+		}
+		memcpy(pdst, psrc, blocksize);
+	}
+
+out:
+	free(data_buf);
+	free(ecc_buf);
+	free(errloc);
+	free_bch(bch);
+
+	return (struct fcb_block *)fcb;
+}
+
 static void encode_hamming_13_8(void *_src, void *_ecc, size_t size)
 {
 	int i;
@@ -312,7 +441,11 @@
 		goto err;
 	}
 
-	fcb = read_fcb_hamming_13_8(rawpage);
+	if (cpu_is_mx6ul())
+		fcb = read_fcb_bch(rawpage, 40);
+	else
+		fcb = read_fcb_hamming_13_8(rawpage);
+
 	if (IS_ERR(fcb)) {
 		pr_err("Cannot read fcb\n");
 		ret = PTR_ERR(fcb);
@@ -766,8 +899,14 @@
 
 	fcb_raw_page = xzalloc(mtd->writesize + mtd->oobsize);
 
-	memcpy(fcb_raw_page + 12, fcb, sizeof(struct fcb_block));
-	encode_hamming_13_8(fcb_raw_page + 12, fcb_raw_page + 12 + 512, 512);
+	if (cpu_is_mx6ul()) {
+		/* 40 bit BCH, for i.MX6UL */
+		encode_bch_ecc(fcb_raw_page + 32, fcb, 40);
+	} else {
+		memcpy(fcb_raw_page + 12, fcb, sizeof(struct fcb_block));
+		encode_hamming_13_8(fcb_raw_page + 12,
+				    fcb_raw_page + 12 + 512, 512);
+	}
 
 	dbbt = dbbt_data_create(mtd);