programmed on the BSP during (early) boot. This makes sure
that the APs get configured the same as the BSP, irrspective
of how FreeBSD was loaded.
2. Make sure to flush the dcache after writing the TLB1 entries
to the boot page. The APs aren't part of the coherency domain
just yet.
3. Set pmap_bootstrapped after calling pmap_bootstrap(). The
FDT code now maps the devices (like OF), and this resulted
in a panic.
4. Since we pre-wire the CCSR, make sure not to map chunks of
it in pmap_mapdev().
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