Dear all:
Now I used the mpc8379erdb board and changed the nand flash from 32M to 1G
.
but when I used u-boot command for nand write ,some problem happened like:
U-Boot 1.3.0-rc2
///////////////////////////////////////////////////////////////////////////////////////////////
Ehometech #help nand
nand info - show available NAND devices
nand device [dev] - show or set current device
nand read[.jffs2] - addr off|partition size
nand write[.jffs2] - addr off|partition size - read/write `size' bytes
starting
at offset `off' to/from memory address `addr'
nand erase [clean] [off size] - erase `size' bytes from
offset `off' (entire device if not specified)
nand bad - show bad blocks
nand dump[.oob] off - dump page
nand scrub - really clean NAND erasing bad blocks (UNSAFE)
nand markbad off - mark bad block at offset (UNSAFE)
nand biterr off - make a bit error at offset (UNSAFE)
nand lock [tight] [status] - bring nand to lock state or display locked pages
nand unlock [offset] [size] - unlock section
Ehometech #nand erase
NAND erase: device 0 whole chip
Erasing at 0x3ffc0000 -- 100% complete.
OK
Ehometech #nand bad
Device 0 bad blocks:
Ehometech #tftp 1000000 root-p2k-b4k.jffs2
TSEC0: No link.
Speed: 1000, full duplex
Using TSEC1 device
TFTP from server 192.168.0.200; our IP address is 192.168.0.220
Filename 'root-p2k-b4k.jffs2'.
Load address: 0x1000000
Loading: T T #################################################################
#################################################################
#################################################################
#################################################################
#################################################################
##########################################
done
Bytes transferred = 5383652 (5225e4 hex)
Ehometech #nand write.jffs2 1000000 0 5225e4
NAND write: device 0 offset 0x0, size 0x5225e4
Writing data at 0x1a000 -- 2% complete.writing NAND page at offset 0x20000
failed
Data did not fit into device, due to bad blocks
5383652 bytes written: ERROR
Ehometech #nand device
Device 0: NAND 1GiB 3,3V 8-bit
Ehometech #
///////////////////////////////////////////////////////////////////////////////////////////////
But the nand flash has no bad blocks when I use "nand bad"command.
root-p2k-b4k.jffs2 is the jffs2 filesystem made by mkfs.jffs2 -e 0x40000
Thank you!Best wishes.
Bob yu
2008-4-22
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