diff options
Diffstat (limited to 'common/imx-bbu-nand-fcb.c')
| -rw-r--r-- | common/imx-bbu-nand-fcb.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/common/imx-bbu-nand-fcb.c b/common/imx-bbu-nand-fcb.c index 15ddf5d7b0..8842ba6c58 100644 --- a/common/imx-bbu-nand-fcb.c +++ b/common/imx-bbu-nand-fcb.c @@ -318,6 +318,17 @@ struct fcb_block *read_fcb_hamming_13_8(void *rawpage) fcb = rawpage + 12; ecc = rawpage + 512 + 12; + /* + * The ROM does the check for the correct fingerprint and version before + * correcting bitflips. This means we cannot allow bitflips in the + * fingerprint and version. We bail out with an error if it's not correct. + * This is currently done in the i.MX6qdl path. It needs to be checked if + * the same happens in the BCH encoded variants (i.MX6ul(l)) aswell. + */ + if (((struct fcb_block *)fcb)->FingerPrint != 0x20424346 || + ((struct fcb_block *)fcb)->Version != 0x01000000) + return ERR_PTR(-EINVAL); + for (i = 0; i < 512; i++) { parity = ecc[i]; np = calculate_parity_13_8(fcb[i]); |