From 3c345377fe333510cc16f4f5eda9796d36ec6e06 Mon Sep 17 00:00:00 2001
From: tsutsui <tsutsui@NetBSD.org>
Date: Wed, 2 Dec 2009 15:47:45 +0000
Subject: [PATCH] Add a common pmap_bootstrap_finalize() function which
 initializes lwp0 uarea, curlwp, and curpcb after MMU is turned on, using
 lwp0uarea variable saved during pmap_bootstrap() (or equivalent functions)
 for pmap_motorola based ports.  Discussed with rmind@.

---
 sys/arch/m68k/include/pcb.h           |  5 ++++-
 sys/arch/m68k/include/pmap_motorola.h |  6 +++++-
 sys/arch/m68k/m68k/pmap_motorola.c    | 22 ++++++++++++++++++++--
 3 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/sys/arch/m68k/include/pcb.h b/sys/arch/m68k/include/pcb.h
index e911a38720ad..6241095f255e 100644
--- a/sys/arch/m68k/include/pcb.h
+++ b/sys/arch/m68k/include/pcb.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: pcb.h,v 1.7 2007/03/04 06:00:04 christos Exp $	*/
+/*	$NetBSD: pcb.h,v 1.8 2009/12/02 15:47:45 tsutsui Exp $	*/
 
 /*
  * Copyright (c) 1982, 1986, 1990, 1993
@@ -105,4 +105,7 @@ struct pcb {
 struct md_coredump {
 	int	md_exec[16];	/* exec structure for HP-UX core dumps */
 };
+
+extern struct pcb *curpcb;
+
 #endif /* _M68K_PCB_H_ */
diff --git a/sys/arch/m68k/include/pmap_motorola.h b/sys/arch/m68k/include/pmap_motorola.h
index 497c72f4ec8f..3ab4645577ab 100644
--- a/sys/arch/m68k/include/pmap_motorola.h
+++ b/sys/arch/m68k/include/pmap_motorola.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: pmap_motorola.h,v 1.21 2009/08/26 00:30:02 thorpej Exp $	*/
+/*	$NetBSD: pmap_motorola.h,v 1.22 2009/12/02 15:47:45 tsutsui Exp $	*/
 
 /* 
  * Copyright (c) 1991, 1993
@@ -191,6 +191,10 @@ extern char		*vmmap;		/* map for mem, dumps, etc. */
 extern void		*CADDR1, *CADDR2;
 extern void		*msgbufaddr;
 
+/* for lwp0 uarea initialization after MMU enabled */
+extern vaddr_t		lwp0uarea;
+void	pmap_bootstrap_finalize(void);
+
 vaddr_t	pmap_map(vaddr_t, paddr_t, paddr_t, int);
 void	pmap_procwr(struct proc *, vaddr_t, size_t);
 #define	PMAP_NEED_PROCWR
diff --git a/sys/arch/m68k/m68k/pmap_motorola.c b/sys/arch/m68k/m68k/pmap_motorola.c
index 061f62486d14..34adacf3c330 100644
--- a/sys/arch/m68k/m68k/pmap_motorola.c
+++ b/sys/arch/m68k/m68k/pmap_motorola.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: pmap_motorola.c,v 1.51 2009/11/23 00:11:44 rmind Exp $        */
+/*	$NetBSD: pmap_motorola.c,v 1.52 2009/12/02 15:47:45 tsutsui Exp $        */
 
 /*-
  * Copyright (c) 1999 The NetBSD Foundation, Inc.
@@ -117,7 +117,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap_motorola.c,v 1.51 2009/11/23 00:11:44 rmind Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap_motorola.c,v 1.52 2009/12/02 15:47:45 tsutsui Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -240,6 +240,8 @@ struct pmap	*const kernel_pmap_ptr = &kernel_pmap_store;
 struct vm_map	*st_map, *pt_map;
 struct vm_map_kernel st_map_store, pt_map_store;
 
+vaddr_t		lwp0uarea;	/* lwp0 u-area VA, initialized in bootstrap */
+
 paddr_t		avail_start;	/* PA of first available physical page */
 paddr_t		avail_end;	/* PA of last available physical page */
 vsize_t		mem_size;	/* memory size in bytes */
@@ -313,6 +315,22 @@ void pmap_check_wiring(const char *, vaddr_t);
 #define	PRM_CFLUSH	0x02
 #define	PRM_KEEPPTPAGE	0x04
 
+/*
+ * pmap_bootstrap_finalize:	[ INTERFACE ]
+ *
+ *	Initialize lwp0 uarea, curlwp, and curpcb after MMU is turned on,
+ *	using lwp0uarea variable saved during pmap_bootstrap().
+ */
+void
+pmap_bootstrap_finalize(void)
+{
+
+	memset((void *)lwp0uarea, 0, USPACE);
+	uvm_lwp_setuarea(&lwp0, lwp0uarea);
+	curlwp = &lwp0;
+	curpcb = lwp_getpcb(&lwp0);
+}
+
 /*
  * pmap_virtual_space:		[ INTERFACE ]
  *