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authorScott Wood <scottwood@freescale.com>2012-03-02 14:01:57 -0600
committerScott Wood <scott@tyr.buserror.net>2012-05-18 17:34:31 -0500
commit418396e212b59bf907dbccad997ff50f7eb61b16 (patch)
treed576541a8201318fd5373116d5450de845c25d3b /doc/README.nand
parentf50bf50d7f6f99c5ad4666d63a7eef43d3940500 (diff)
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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>
Diffstat (limited to 'doc/README.nand')
-rw-r--r--doc/README.nand16
1 files changed, 8 insertions, 8 deletions
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 @@ Commands:
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.
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