Artesyn COMX-P40x0 ENP2 Installation and Use (August 2014) - Manual (Page 99)

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COMX-P40x0 ENP2 Installation and Use (6806800R95B) 99
The following is a NOR Flash operation example that upgrades the U-Boot.
tftpboot $loadaddr $ubootfile; protect off 0xeff00000 +$filesize;
erase 0xeff00000 +$filesize; cp.b $loadaddr 0xeff00000 $filesize;
protect on 0xeff00000 +$filesize;
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:
protect on all Protects all flash banks
protect off start end Makes flash from address "start" to address "end" writable
protect off start +len Makes flash from address "start" to end of section with address
"start"+"len"-1 writable
protect off all Makes all flash banks writable
erase start end Erases flash from address ’start’ to address ’end’
erase start +len Erases flash from address ’start’ to the end of section with address
’start’+len-1
erase all Erases all flash banks
Table 7-6 NOR Flash Command Usage (continued)
Command Description
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