ref: 793efcee28211f3670a70e42efd7fa3d9a3ec92d
dir: /sys/src/9/port/nandecc.h/
typedef enum NandEccError {
NandEccErrorBad,
NandEccErrorGood,
NandEccErrorOneBit,
NandEccErrorOneBitInEcc,
} NandEccError;
ulong nandecc(uchar buf[256]);
NandEccError nandecccorrect(uchar buf[256], ulong calcecc, ulong *storedecc,
int reportbad);