Insert a layer of indirection to the pmap code, using a kobj for

the interface. This allows run-time selection of MMU code, based
on CPU-type detection, or tunable-overrides when testing new code.

Pre-requisite for G5 support.

conf/files.powerpc
  - remove pmap.c
  - add mmu_if.h, mmu_oea.c, pmap_dispatch.c

powerpc/include/mmuvar.h
  - definitions for MMU implementations

powerpc/include/pmap.h
  - remove pmap_pte_spill declaration
  - add pmap_mmu_install declaration
  - size the phys_avail array
  - pmap_bootstrapped is now global-scope

powerpc/powerpc/machdep.c
  - call kobj_machdep_init early in the boot sequence to allow
    kobj usage prior to SI_SUB_LOCK
  - install the OEA pmap code. This will be moved to CPU-specific
    init code in the future.

powerpc/powerpc/mmu_if.m
  - Kobj MMU interface definitions

powerpc/powerpc/pmap_dispatch.c
  - central dispatch for pmap calls
  - contains the global mmu kobj and the routine to locate the
   the mmu implementation and init the kobj

1 files changed, 4 insertions, 0 deletions

diff --git a/sys/powerpc/aim/machdep.c b/sys/powerpc/aim/machdep.c
index d27d48f..e7d28b6 100644
--- a/sys/powerpc/aim/machdep.c
+++ b/sys/powerpc/aim/machdep.c
@@ -110,6 +110,7 @@ __FBSDID("$FreeBSD$");
 #include <machine/fpu.h>
 #include <machine/md_var.h>
 #include <machine/metadata.h>
+#include <machine/mmuvar.h>
 #include <machine/pcb.h>
 #include <machine/powerpc.h>
 #include <machine/reg.h>
@@ -317,6 +318,8 @@ powerpc_init(u_int startkernel, u_int endkernel, u_int basekernel, void *mdp)
 
 	kdb_init();
 
+	kobj_machdep_init();
+
 	/*
 	 * XXX: Initialize the interrupt tables.
 	 *      Disable translation in case the vector area
@@ -358,6 +361,7 @@ powerpc_init(u_int startkernel, u_int endkernel, u_int basekernel, void *mdp)
 	/*
 	 * Initialise virtual memory.
 	 */
+	pmap_mmu_install(MMU_TYPE_OEA, 0);		/* XXX temporary */
 	pmap_bootstrap(startkernel, endkernel);
 
 	/*