very minor 405GP and 405GPr PCI difference

[Ralph Blach]

Yesterday I discovered a minor 405GP vs 405GPr PCI difference.
IN the 405GP the ptm1ms bit 31, the enable bit for the region is set to 1
by the hardware and cannot be written.
On the 405GPr the bit is writable and this makes necessitates  a change in
walnut.c

In walnut.c there is the line

out_le32((void *) &(pcip->ptm1ms), 0x00000000);

On the walnut, this would work fine because bit 31 cannot be written to a
0,
On the GPr, this disables the regions and PCI no longer functions.
The line should be changed to

out_le32((void*)&(pcip->ptm1ms),0x000000001);

This will fix the 405GPr and make no difference to the 405GP since the bit
is permanently to 1.

Chip


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