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bad_len:ÓÃÓÚÖ¸¶¨»µ¿é±ê¼ÇµÄ³¤¶È£¬Ä¬ÈÏֵΪ2 bytes
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1 ½«/sys/kernel/debug/nfc_base/allowEraseBadBlockÖÃΪ1£»
cmd:echo "1" > /sys/kernel/debug/nfc_base/allowEraseBadBlock
2 rootºó¼ÓÔزâÊÔÄ£¿é²¢´«Èë²ÎÊý£¬²âÊÔ½á¹ûͨ¹ýkernel logÊä³ö;
cmd:insmod nandflash_postest.ko dev=4 bad_pos=0 bad_len=2
3 ½«/sys/kernel/debug/nfc_base/allowEraseBadBlockÖÃΪ0
cmd:echo "0" > /sys/kernel/debug/nfc_base/allowEraseBadBlock
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