Big Endian issues

[Nicolas Pitre]

On Tue, 28 Nov 2000, Alice Hennessy wrote:

> In dealing with data, however, map->write32 is used in writes but
> map->copy_from is used in reads.
> So, the assumption I assume is that map->copy_from will also swap bytes.
> But in my environment,
> map->copy_from (memcpy_fromio) doesn't swap bytes.  I don't think it needs to
> if we make use of
> map->copy_to (memcpy_toio)  when writing data (in amd_write_val and in the
> immediate data check). In this case, copy_from and copy_to functions just
> need to be consistent.

Neither of the write nor copy map methods is supposed to swap bytes.

Bytes might be swapped in cfi_build_cmd so you actually write commands and
compare with status in the device's endianness.  However data shouldn't be
swapped at all.


Nicolas



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