Complete rework of the PowerPC pmap and a number of other bits in the early

boot sequence.

The new pmap.c is based on NetBSD's newer pmap.c (for the mpc6xx processors)
which is 70% faster than the older code that the original pmap.c was based
on.  It has also been based on the framework established by jake's initial
sparc64 pmap.c.

There is no change to how far the kernel gets (it makes it to the mountroot
prompt in psim) but the new pmap code is a lot cleaner.

Obtained from:	NetBSD (pmap code)

1 files changed, 10 insertions, 2 deletions

diff --git a/sys/powerpc/include/pte.h b/sys/powerpc/include/pte.h
index 3d1ddcf..38e9a07 100644
--- a/sys/powerpc/include/pte.h
+++ b/sys/powerpc/include/pte.h
@@ -45,6 +45,10 @@ struct pte {
 	u_int pte_hi;
 	u_int pte_lo;
 };
+
+struct pteg {
+	struct	pte pt[8];
+};
 #endif	/* LOCORE */
 /* High word: */
 #define	PTE_VALID	0x80000000
@@ -61,8 +65,12 @@ struct pte {
 #define	PTE_M		0x00000010
 #define	PTE_G		0x00000008
 #define	PTE_PP		0x00000003
-#define	PTE_RO		0x00000003
-#define	PTE_RW		0x00000002
+#define	PTE_SO		0x00000000	/* Super. Only       (U: XX, S: RW) */
+#define PTE_SW		0x00000001	/* Super. Write-Only (U: RO, S: RW) */
+#define	PTE_BW		0x00000002	/* Supervisor        (U: RW, S: RW) */
+#define	PTE_BR		0x00000003	/* Both Read Only    (U: RO, S: RO) */
+#define	PTE_RW		PTE_BW
+#define	PTE_RO		PTE_BR
 
 #ifndef	LOCORE
 typedef	struct pte pte_t;