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 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
