• Boris Brezillon's avatar
    mtd: rawnand: Allow selection of ECC byte ordering at runtime · 309600c1
    Boris Brezillon authored
    Currently, the selection of ECC byte ordering for software hamming is
    done at compilation time, which doesn't make sense when ECC byte
    calculation is done in hardware and byte ordering is forced by the
    hardware engine.
    In this case, only the correction is done in software and we want to
    force the byte-ordering no matter the value of CONFIG_MTD_NAND_ECC_SMC.
    
    This is typically the case for the FSMC (Smart Media ordering), TMIO and
    TXX9NDFMC (regular byte ordering) blocks.
    
    For all other use cases (pure software implementation, SM FTL and
    nandecctest), we keep selecting the byte ordering based on the
    CONFIG_MTD_NAND_ECC_SMC value. It might not be ideal for SM FTL (I'd
    expect Smart Media ordering to be employed by the Smart Media FTL), but
    this option doesn't seem to be enabled in the existing _defconfig, so
    I can't tell setting sm_order to true is the right choice.
    Signed-off-by: default avatarBoris Brezillon <boris.brezillon@bootlin.com>
    Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
    309600c1
mtd_nandecctest.c 8.21 KB