README on Implementing Linux for the Logic PD LPD7A40X-10=========================================================- CPLD memory mapping  The board designers chose to use high address lines for controlling  access to the CPLD registers.  It turns out to be a big waste  because we're using an MMU and must map IO space into virtual  memory.  The result is that we have to make a mapping for every  register.- Serial Console  It may be OK not to use the serial console option if the user passes  the console device name to the kernel.  This deserves some exploration.