nand: extend .raw accesses to work on multiple pages
A use for this is to read, modify, erase, and write an entire block as a
single unit, as a replacement for the biterr command. This way gives
more flexibility in that you can also test multiple bit errors, errors
in the ECC, etc.
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/doc/README.nand b/doc/README.nand
index 04a87c9..1602b5e 100644
--- a/doc/README.nand
+++ b/doc/README.nand
@@ -94,14 +94,14 @@
of data for one 512-byte page or 2 256-byte pages. There is no check
for bad blocks.
- nand read.raw addr ofs|partition
- Read page from `ofs' in NAND flash to `addr'. This reads the raw page,
- so ECC is avoided and the OOB area is read as well.
-
- nand write.raw addr ofs|partition
- Write page from `addr' to `ofs' in NAND flash. This writes the raw page,
- so ECC is avoided and the OOB area is written as well, making the whole
- page written as-is.
+ nand read.raw addr ofs|partition [count]
+ nand write.raw addr ofs|partition [count]
+ Read or write one or more pages at "ofs" in NAND flash, from or to
+ "addr" in memory. This is a raw access, so ECC is avoided and the
+ OOB area is transferred as well. If count is absent, it is assumed
+ to be one page. As with .yaffs2 accesses, the data is formatted as
+ a packed sequence of "data, oob, data, oob, ..." -- no alignment of
+ individual pages is maintained.
Configuration Options: