U-BOOT1.3.4 Nand Flash识别问题
问题很简单，但是不知道怎么下手，希望高手能够指点一二！1.UBOOT启动后，在识别NAND时(如下绿色的256MiB ) 显得非常慢，大概要等上1~3秒钟，不知道是哪里出了问题！
U-Boot 1.3.4 (Nov 20 2012 - 22:42:53)DRAM:64 MBFlash:2 MBNAND:256 MiBIn: serialOut: serialErr: serialUSB slave is enable!dm9000 i/o: 0x20000300, id: 0x90000a46 DM9000: running in 16 bit modeMAC: 08:00:3e:26:0a:5boperating at unknown: 0 modeHit any key to stop autoboot:0
2.命令tftp必须改成tftpboot才能使用TFTP下载。原来的tftp命令不知道飞哪里去了。ARM2440 # help nand
nand info - show available NAND devices
nand device - 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 - 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 - bring nand to lock state or display locked pages
nand unlock - unlock sectionARM2440 # help tftp
Unknown command 'tftp' - try 'help' without arguments for list of all known commandsARM2440 # help tftpboot
tftpboot [bootfilename]ARM2440 # 怎么没人能解决呢 纠结啦 这个问题我研究了半月之久了
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