Until this time only basic SLC functionality exists when you want to use SLC to access external nand flash.
Basic functionality can be selected with command:
lpc3180 select 0 slc
It is anyway very slow to write/read to/from nand flash.
With the new command, SLC speed improved about 20 times, and hardware ECC info also read/written from/to nand flash OOB area:
lpc3180 select 0 slc bulk
Speed improvement achieved by using working are in SRAM of the LPC3250 chip and controlling DMA controller to interact between SRAM and SLC peripheral.
Here are the patches, and if they are ok than take them.
Tested with hitex LPC3250 usb stick.
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
The LPC3180 NAND driver was crashing on some large page chips.
Fix:
- Crash and related functionality (don't memset too much OOB data)
- Some debug messages
- Command handling now works
[dbrownell@users.sourceforge.net: whitespace/linelength/message cleanup]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Usage messages should use the same EBNF as the User's Guide;
no angle brackets. Be more complete too ... some params were
missing. Improve and correct various helptexts.
Make user's guide refer to the NAND "driver" name, not the
controller name; that's a bit more precise.
Don't use "&function"; its name is its address. Line up struct
initializers properly. Remove some blank lines.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Rename nand.h as flash/nand/core.h, chase consumers. The public APIs
need to be sorted out with imp.h, but this allows other changes to
begin improving the separation between policy and mechanism.
Moves #include <target/target.h> and #include "driver.h" into the
internal headers or source files, removing it from <flash/nand/core.h>.
Changes from the flat namespace to heirarchical one. Instead of writing:
#include "nand.h"
the following form should be used.
#include <flash/nand.h>
The exception is from .c files in the same directory.
