• Paul Gortmaker's avatar
    sbc8548: enable ability to boot from alternate flash · f0aec4ea
    Paul Gortmaker authored
    This board has an 8MB soldered on flash, and a 64MB SODIMM
    flash module.  Normally the board boots from the 8MB flash,
    but the hardware can be configured for booting from the 64MB
    flash as well by swapping CS0 and CS6.  This can be handy
    for recovery purposes, or for supporting u-boot and VxBoot
    at the same time.
    
    To support this in u-boot, we need to have different BR0/OR0
    and BR6/OR6 settings in place for when the board is configured
    in this way, and a different TEXT_BASE needs to be used due
    to the larger sector size of the 64MB flash module.
    
    We introduce the suffix _8M and _64M for the BR0/BR6 and the
    OR0/OR6 values so it is clear which is being used to map what
    specific device.
    
    The larger sector size (512k) of the alternate flash needs
    a larger malloc pool, otherwise you'll get failures when
    running saveenv, so bump it up accordingly.
    Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
    Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
    f0aec4ea
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