The eCos NAND library exposes two principal APIs: one for applications to use and the other to communicate with device drivers.
The following configuration options are provided. They affect the library globally, i.e. across all drivers.
CYGPKG_IO_NAND_CFLAGS_ADD, CYGPKG_IO_NAND_CFLAGS_REMOVEAllows specific build options to be added to or removed from the CFLAGS list when building this library.
CYGSEM_IO_NAND_DEBUGThis is the master switch for all debug reporting from the library.
CYGSEM_IO_NAND_DEBUG_FN_DEFAULTThis is the default function that the library will use when sending
debugging output. It must behave like printf.
The default - cyg_nand_defaultprintf
- is a wrapper to diag_printf.
Note: Individual drivers may override this setting in their
devinitroutines by overwriting the pointer in the device struct.
CYGSEM_IO_NAND_DEBUG_LEVELSpecifies the verbosity of the NAND library and device drivers. Ranges from 0 (off) to 9 (incredibly verbose); the default setting is 1. (Higher values are only likely to be of use during driver development, if ever.) When enabled, messages are printed using the per-device printf-like function (see above).
Note: Should a serious problem be encountered it will always be reported the printf-like function, regardless of this setting. Such messages may be suppressed altogether by turning off
CYGSEM_IO_NAND_DEBUG.
CYGSEM_IO_NAND_READONLYGlobally disables all code which writes to NAND devices. This may be useful during driver development.
CYGNUM_NAND_MAX_PARTITIONSSets a compile-time limit on the number of partitions any NAND device may have. The default is 4, which should be enough for most purposes; unnecessarily setting this higher wastes RAM.
CYGSEM_IO_NAND_USE_BBTGlobally enables and disables the use of Bad Block Table.
| Warning |
This setting should not be disabled lightly! It is strongly recommended that you leave this setting enabled unless you have a very good reason to not use it. It is provided really as a convenience for allowing developers to recover their NAND from a confused state. |