mtd on cf card

[h hd]

 Hi,

      I have an at91rm9200 board. It has two 4M nor flashes and a compact
 flash card interface. But I have to run cardmgr command every time to mount
 the cf card. Furthermore, I don't know how to use mtd and jffs2 in the cf
 card. Is there anybody can help me?

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 best wishes,
      mycmos