Intel NOR flash(P30) query

[Manjula D <manboot@ureach.com>]

Hi All,
Iam a newbie to mtd. We have a MPC8272 custom board with INTEL
TE28F640P30B85 (P30-CFI compilant)NOR boot Flash and NAND flash
with JFFS2 filesystem running linux-2.4.20-8.
The NOR Flash need not have any partition/filesystem.
My requirement is to have an application to copy an image from
the NAND Flash to the NOR Flash.
My current understanding is 
Under RAM/ROM/Flash chip drivers on selecting, 
Detect flash chips by Common Flash Interface (CFI) probe :
  cfi_probe_init() will register with the mtd_chip_driver.
Support for Intel/Sharp flash chips:
  cfi_cmdset_0001.c contains the list of commands supported by
  Intel.
  
1) I need to understand how the application views the NOR flash
    once it is registered as a mtd device.
2) Once i register as mtd_chip_driver how can i call the
    read/write commands of the flash from the application?
3) What is do_map_probe for and how is it different from
    cfi_probe?

  -Thanks
  Manju

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