Artesyn COMX-P40x0 ENP2 Installation and Use (January 2015) - Manual (Page 110)

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COMX-P40x0 ENP2 Installation and Use (6806800R95C) 110
7.14 NAND Flash
The NAND Flash is Numonyx NAND08GW3B2CN6E which is 1 GB in size. It is attached to the
FCM on the local bus and works at 8-bit mode. Boot up message will appear as "NAND: 1024
MiB".
Each page contains 2,112 bytes, including 2048 bytes of data with 64 bytes spare. Each block
contains 64 pages, including 128 KB of data with 4 KB spare, making a total of 8192 blocks.
NAND Flash supports the following commands:
7.15 I2C
There are four I2C buses in the COMX-P40x0 ENP2 module, labeled as I2C<1/2/3/4>. For more
information, see
GPIO on page 78 .
Table 7-7 NAND Flash Command Usage
Command Description
nand info Shows available NAND devices
nand device [dev] Shows or sets current device
nand read Addr off|partition size
nand write Addr off|partition size
Read/write ’size’ bytes starting at offset ’off’ to/from memory
address ’addr’, skipping bad blocks.
nand erase [clean] [off size] Erase ’size’ bytes from offset ’off’ (will erase on the entire device if it
is not specified)
nand bad Shows bad blocks
nand dump[.oob] off Dumps page
nand scrub Cleans NAND by erasing bad blocks. Considered unsafe.
nand markbad off [...] Marks bad block or blocks at offset. Considered unsafe.
nand biterr off Makes a bit error at offset. Considered unsafe.