[U-Boot-Users] PATCH: add low-boot configuration to MPC8260ADS family of boards

[VanBaren, Gerald (AGRE)]

Hi Wolfgang,

Attached is a patch to allow the MPC8260FADS family of boards to be
configured to boot either high (0xfff00000) or low (0x00000000).  It was
tested on a PQ2FADS-ZU (MPC8280 processor).  I slipped in an unrelated
change to the default load address and beg your indulgence in applying
that as well.

Thanks,
gvb


CHANGELOG:

* Patch by Jerry Van Baren 08 Nov 2004
  - Enhance the PQ2FADS board (aka. mpc8260ads) to boot high or low
based on
    whether "lowboot" is in the configuration target name.  If lowboot
is
    selected, the jumper for the HRCW source should select flash.  If
lowboot
    is not selected, the jumper for the HRCW source should select the
BCSR.

    The "boot low" configuration is highly recommended.  With this
    configuration, the HRCW sets the IMMR to 0xf0000000 to be directly
    compatible with linux (the IMMR is properly positioned and does not
need
    to be moved in start.S).

  - The patch also changes the default load base address to 0x00400000
(was
    0x00100000) to allow linux to boot properly.

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